Switching method and device used for wireless communication

Abstract

The invention discloses a switching method and device used for wireless communication. The communication node receives the first RRC message; the first RRC message comprises configuration information of a first candidate cell, and the first RRC message comprises a first condition; receiving a first signaling; the first signaling is a signaling of a protocol layer under an RRC (Radio Resource Control) sub-layer, and the first signaling indicates to be switched to the first candidate cell; along with the first signaling, switching to the first candidate cell; the handover to the first candidate cell is satisfied depending on the first condition within a first time interval; the starting time of the first time interval depends on the first signaling; the first condition comprises at least one of the condition that the measurement result of the first candidate cell is better than a first threshold value or the measurement result of the first service cell is worse than a second threshold value. According to the invention, the switching is delayed through the first time interval, the robustness of the switching is ensured, and the signaling overhead is reduced.

Description

Technical Field

[0001] This application relates to transmission methods and apparatuses in a wireless communication system, and particularly to methods and apparatuses for handover. Background Art

[0002] With the continuous development of wireless communication, the requirements for mobility, transmission delay, and system capacity are getting higher and higher. 3GPP (3rd Generation Partner Project) completed the standardization work of L1 (Layer 1) / L2 (Layer 2) Triggered Mobility (LTM) through the "Further NR mobility enhancements" Work Item (WI) in Release 18 (R18); for the intra-DU (Distributed Unit) scenario, the base station pre-configures the configuration information of LTM candidate cells, and the UE (User Equipment) periodically reports measurement information. The base station triggers the handover through the LTM cell switch command MAC (Medium Access Control) CE (Control Element), thereby reducing the handover delay.

[0003] To further enhance LTM, event-triggered L1 measurement reporting, Conditional LTM, and inter-CU (Centralized Unit) LTM have become an important research direction in 3GPP Release 19. In addition, to further enhance mobility, AI (Artificial Intelligence) / ML (Machine Learning)-based mobility has become an important research direction in 3GPP Release 19 and future protocol versions. Summary of the Invention

[0004] An important purpose of event-triggered L1 (Layer 1) measurement reports is to assist the network in performing handovers. The inventors found through research that since L1 measurements are more volatile than layer 3 measurements, the channel quality may change during the time interval between when the UE (User Equipment) sends an L1 measurement report and when it receives a handover command. When the UE receives a handover command, if the channel quality of the target cell is too poor, it may lead to frequent handovers or even handover failures. Therefore, how to avoid ping-pong effects and / or frequent handovers and / or handover failures is a problem that needs to be solved.

[0005] To address the above problems, this application provides a solution. In the above problem description, the NR system is used as an example. This application is also applicable to scenarios such as LTE (Long-Term Evolution), LTE-A (Long-Term Evolution Advanced), future 5G+ or 6G systems, and achieves similar technical effects to the NR system. Further, although the original intention of this application is for the Uu air interface, this application can also be used for the PC5 interface and achieve similar technical effects to the Uu air interface. Further, although the original intention of this application is for the terminal-to-base station scenario, this application is also applicable to the V2X (Vehicle-to-Everything) scenario, the communication scenarios between terminals and relays, and between relays and base stations, and achieves similar technical effects to the terminal-to-base station scenario. Further, although the original intention of this application is for the terminal-to-base station scenario, this application is also applicable to the IAB (Integrated Access and Backhaul) communication scenario and achieves similar technical effects to the terminal-to-base station scenario. Further, although the original intention of this application is for the Terrestrial Network (TN) scenario, this application is also applicable to the Non-Terrestrial Network (NTN) communication scenario and achieves similar technical effects to the TN scenario. In addition, using a unified solution for different scenarios helps to reduce hardware complexity and cost.

[0006] As an example, the interpretation of the terms in this application refers to the definitions in the 3GPP specification protocol series TS38.

[0007] As an example, the interpretation of the terms in this application refers to the definitions in the 3GPP specification protocol series TS37.

[0008] As an example, the interpretation of the terms in this application refers to the definitions in the 3GPP specification protocol series 6G.

[0009] It should be noted that, without conflict, the embodiments in the terminal of this application and the features in the embodiments can be applied to the base station. Without conflict, the embodiments in the base station of this application and the features in the embodiments can be applied to the terminal. Without conflict, the embodiments in this application and the features in the embodiments can be combined with each other arbitrarily.

[0010] This application discloses a method used in a terminal, which is characterized by including:

[0011] Receiving a first RRC message; wherein, the first RRC (Radio Resource Control) message includes configuration information of a first candidate cell, and the first RRC message includes a first condition;

[0012] Receiving a first signaling; wherein, the first signaling is a signaling of a protocol layer below the RRC sublayer, and the first signaling indicates a handover to the first candidate cell;

[0013] Following the first signaling, performing a handover to the first candidate cell;

[0014] Wherein, the handover to the first candidate cell depends on the first condition being satisfied within a first time interval; the start time of the first time interval depends on the first signaling; the first condition includes at least one of the measurement result of the first candidate cell being better than a first threshold or the measurement result of the first serving cell being worse than a second threshold.

[0015] As an embodiment, the problems to be solved by this application include: how to avoid handover failures.

[0016] As an embodiment, the problems to be solved by this application include: how to avoid frequent handovers.

[0017] As an embodiment, the problems to be solved by this application include: how to reduce the ping-pong effect.

[0018] As an embodiment, the problems to be solved by this application include: how to reduce the ping-pong effect and avoid handover failures.

[0019] As an embodiment, the above method solves this problem by enhancing the conditions for handover to the second cell.

[0020] As an embodiment, the above method solves this problem by increasing the difficulty of handover to the second cell.

[0021] As an embodiment, the above method ensures the robustness of the handover by delaying the execution of the handover in the first time interval.

[0022] As an embodiment, the above method delays the execution of the handover by a first time interval, without the need to receive a handover command again, reducing the signaling overhead.

[0023] As an embodiment, the above method improves the mobility performance.

[0024] As an embodiment, the above method avoids handover failures.

[0025] As an embodiment, the above method avoids frequent handovers.

[0026] As an embodiment, the above method reduces the ping-pong effect.

[0027] According to one aspect of the present application, it is characterized in that the method includes:

[0028] After the first signaling is received, send a first message;

[0029] Wherein, the first message indicates that the first condition is not satisfied when the first signaling is received.

[0030] As an embodiment, the problems to be solved by the present application include: how to ensure service continuity before switching to the first candidate cell within the first time interval; the above method notifies the base station through the first message, thereby solving the above problems.

[0031] As an embodiment, the above method is beneficial to continue the scheduling on the source serving cell before handover.

[0032] As an embodiment, the above method enables the network to obtain information of the terminal, which is beneficial to the decision-making of the network side.

[0033] According to one aspect of the present application, it is characterized in that the method includes:

[0034] In response to the first condition being satisfied within the first time interval, send a second message;

[0035] Wherein, the second message indicates that the first condition is satisfied.

[0036] As an embodiment, the problems to be solved by the present application include: how to ensure service continuity when switching to the first candidate cell within the first time interval; the above method notifies the base station through the second message, thereby solving the above problems.

[0037] As an embodiment, the above method avoids the scheduling on the source serving cell during handover.

[0038] As an embodiment, the above method enables the network to obtain information of the terminal, which is beneficial to the decision-making of the network side.

[0039] According to one aspect of the present application, it is characterized in that the method includes:

[0040] In response to receiving the first signaling, start a first timing advance timer;

[0041] Wherein, the first signaling indicates the timing advance of the first candidate cell.

[0042] As an embodiment, the problems to be solved by the present application include: when the first signaling indicates the timing advance of the first candidate cell, how to maintain the first timing advance timer; in the above method, in response to receiving the first signaling, start the first timing advance timer, thereby solving the above problems.

[0043] As an embodiment, the above method is conducive to realizing a handover without random access.

[0044] According to one aspect of the present application, it is characterized in that the method includes:

[0045] In response to the second condition being satisfied, send a first measurement report;

[0046] Wherein, the first RRC message includes the second condition; the second condition includes at least one of the measurement result of the first candidate cell being better than a third threshold or the measurement result of the first serving cell being worse than a fourth threshold.

[0047] According to one aspect of the present application, it is characterized in that the method includes:

[0048] Perform an evaluation of the second condition; wherein, when at least one of the measurement result of the first candidate cell being better than the third threshold or the measurement result of the first serving cell being worse than the fourth threshold is satisfied, the second condition is satisfied;

[0049] Wherein, the execution of the evaluation of the second condition depends on the first time interval.

[0050] As an embodiment, the problems to be solved by the present application include: how to perform the evaluation of the second condition; in the above method, the execution of the evaluation of the second condition depends on the first time interval, thereby solving the above problems.

[0051] As an embodiment, the above method is conducive to reducing measurements.

[0052] As an embodiment, the above method is conducive to reducing unnecessary evaluations of the second condition.

[0053] According to one aspect of the present application, it is characterized in that the method includes:

[0054] Perform an evaluation for the first condition; wherein, when at least one of the measurement result of at least the first candidate cell being better than the first threshold or the measurement result of the first serving cell being worse than the second threshold is satisfied, the first condition is satisfied;

[0055] Wherein, performing the evaluation for the first condition depends on the first time interval.

[0056] As an embodiment, the problems to be solved by the present application include: how to perform the evaluation for the first condition; in the above method, performing the evaluation for the first condition depends on the first time interval, thereby solving the above problems.

[0057] As an embodiment, the above method is beneficial to reducing measurements.

[0058] As an embodiment, the above method is beneficial to reducing unnecessary evaluations for the first condition.

[0059] According to one aspect of the present application, it is characterized in that the method includes:

[0060] Start the first time interval;

[0061] Wherein, starting the first time interval depends on at least the first signaling being received.

[0062] As an embodiment, the problems to be solved by the present application include: when to start the first time interval; in the above method, starting the first time interval depends on at least the first signaling being received, thereby solving the above problems.

[0063] As an embodiment, the above method is beneficial to determining the time interval for delayed handover.

[0064] As an embodiment, the above method is beneficial to determining a suitable time interval for delayed handover.

[0065] The present application discloses a method used in a base station, which is characterized in that it includes:

[0066] Send a first RRC message; wherein, the first RRC message includes configuration information of a first candidate cell, and the first RRC message includes a first condition;

[0067] Send a first signaling; wherein, the first signaling is a signaling of a protocol layer below the RRC sublayer, and the first signaling indicates a handover to the first candidate cell;

[0068] Accompanying the first signaling, the receiver of the first signaling switches to the first candidate cell;

[0069] Among them, the switching to the first candidate cell depends on the first condition being satisfied within a first time interval; the start time of the first time interval depends on the first signaling; the first condition includes at least one of the measurement result of the first candidate cell being better than a first threshold or the measurement result of the first serving cell being worse than a second threshold.

[0070] According to one aspect of the present application, it is characterized in that the method includes:

[0071] After the first signaling is sent, a first message is received;

[0072] Among them, the first message indicates that the first condition is not satisfied when the first signaling is received.

[0073] According to one aspect of the present application, it is characterized in that the method includes:

[0074] A second message is received; among them, in response to the first condition being satisfied within the first time interval, the receiver of the first signaling sends the second message;

[0075] Among them, the second message indicates that the first condition is satisfied.

[0076] According to one aspect of the present application, it is characterized in that in response to the first signaling being received, the receiver of the first signaling starts a first timer; among them, the first signaling indicates the timing advance of the first candidate cell.

[0077] According to one aspect of the present application, it is characterized in that the method includes:

[0078] A first measurement report is received; among them, in response to a second condition being satisfied, the receiver of the first signaling sends the first measurement report;

[0079] Among them, the first RRC message includes the second condition; the second condition includes at least one of the measurement result of the first candidate cell being better than a third threshold or the measurement result of the first serving cell being worse than a fourth threshold.

[0080] According to one aspect of the present application, it is characterized in that the receiver of the first signaling performs an evaluation for the second condition; among them, when at least one of the measurement result of the first candidate cell being better than the third threshold or the measurement result of the first serving cell being worse than the fourth threshold is satisfied, the second condition is satisfied; among them, the execution of the evaluation for the second condition depends on the first time interval.

[0081] According to one aspect of the present application, it is characterized in that the receiver of the first signaling performs an evaluation for the first condition; wherein, when at least one of the following two conditions is satisfied: the measurement result of at least the first candidate cell is better than the first threshold or the measurement result of the first serving cell is worse than the second threshold, the first condition is satisfied; wherein, the execution of the evaluation for the first condition depends on the first time interval.

[0082] According to one aspect of the present application, it is characterized in that the receiver of the first signaling starts the first time interval; wherein, the start of the first time interval depends on at least the reception of the first signaling.

[0083] The present application discloses a terminal, which is characterized by including:

[0084] The terminal includes: one or more processors and a memory;

[0085] The memory is coupled to the one or more processors, and the memory is used to store computer program code. The computer program code includes computer instructions, and the one or more processors call the computer instructions to enable the terminal to execute the method used in the terminal.

[0086] The present application discloses a base station, which is characterized by including:

[0087] The base station includes: one or more processors and a memory;

[0088] The memory is coupled to the one or more processors, and the memory is used to store computer program code. The computer program code includes computer instructions, and the one or more processors call the computer instructions to enable the base station to execute the method used in the base station. BRIEF DESCRIPTION OF THE DRAWINGS

[0089] By reading the detailed description of the non-limiting embodiments with reference to the following drawings, other features, objectives, and advantages of the present application will become more obvious:

[0090] Figure 1 Shows a flowchart of a terminal according to an embodiment of the present application;

[0091] Figure 2 Shows a schematic diagram of a network architecture according to an embodiment of the present application;

[0092] Figure 3 Shows a schematic diagram of an embodiment of a radio protocol architecture of a user plane and a control plane according to an embodiment of the present application;

[0093] Figure 4Shows a schematic diagram of a first communication device and a second communication device according to an embodiment of the present application;

[0094] Figure 5 Shows a flowchart of wireless signal transmission according to an embodiment of the present application;

[0095] Figure 6 Shows a schematic diagram of the relationship between a first signaling and a handover to a first candidate cell according to an embodiment of the present application;

[0096] Figure 7 Shows a schematic diagram of performing an evaluation for a second condition according to an embodiment of the present application;

[0097] Figure 8 Shows a schematic diagram of performing an evaluation for a first condition according to an embodiment of the present application;

[0098] Figure 9 Shows a schematic diagram of the time for performing evaluations for a second condition and a first condition according to an embodiment of the present application;

[0099] Figure 10 Shows a block diagram of a processing device in a terminal according to an embodiment of the present application;

[0100] Figure 11 Shows a block diagram of a processing device in a base station according to an embodiment of the present application. Detailed implementation manners

[0101] The technical solutions of the present application will be further described in detail below with reference to the accompanying drawings. It should be noted that, without conflict, the embodiments and features in the embodiments of the present application can be arbitrarily combined with each other.

[0102] Example 1

[0103] Embodiment 1 exemplifies a flowchart of a terminal according to an embodiment of the present application, as shown in the accompanying Figure 1 drawing. In the accompanying Figure 1 drawing, each box represents a step. It should be emphasized in particular that the order of the boxes in the drawing does not represent the temporal sequence between the represented steps.

[0104] In Embodiment 1, in step 101, the terminal in the present application receives a first RRC message; wherein, the first RRC message includes configuration information of a first candidate cell, and the first RRC message includes a first condition; in step 102, the terminal receives a first signaling; wherein, the first signaling is a signaling of a protocol layer below the RRC sublayer, and the first signaling indicates a handover to the first candidate cell; in step 103, accompanying the first signaling, the terminal hands over to the first candidate cell; wherein, the handover to the first candidate cell depends on the first condition being satisfied within a first time interval; the start time of the first time interval depends on the first signaling; the first condition includes at least one of the measurement result of the first candidate cell being better than a first threshold or the measurement result of a first serving cell being worse than a second threshold.

[0105] As an embodiment, the first RRC message includes configuration information of a second cell.

[0106] As an embodiment, the first RRC message includes LTM configuration information of the second cell.

[0107] As an embodiment, the first condition included in the first RRC message includes: the first signaling configures the first condition.

[0108] As an embodiment, the first condition included in the first RRC message includes: the first signaling activates the first condition.

[0109] As an embodiment, the first RRC message includes an LTM-CSI-ReportConfig, and the LTM-CSI-ReportConfig indicates the first condition.

[0110] As an embodiment, the first RRC message includes a CSI-MeasConfig, and the CSI-MeasConfig indicates the first condition.

[0111] As an embodiment, the first RRC message includes an LTM-Candidate, and the LTM-Candidate indicates the first condition.

[0112] As an embodiment, the first RRC message includes an LTM-Config, and the LTM-Config indicates the first condition.

[0113] As an embodiment, the first RRC message includes an LTM-CSI-ReportConfig, and the LTM-CSI-ReportConfig indicates the first condition.

[0114] As an embodiment, the first RRC message is an RRC (Radio Resource Control) message.

[0115] As an embodiment, the first RRC message indicates the reference signal resources of the first candidate cell for measurement.

[0116] As an embodiment, the first RRC message indicates the reference signal resources of the first candidate cell for the first condition.

[0117] As an embodiment, an LTM-CSI-ResourceConfig in the first RRC message indicates the reference signal resources of the first candidate cell for measurement.

[0118] As an embodiment, the first RRC message indicates the reference signal resources of the first serving cell for measurement.

[0119] As an embodiment, the first RRC message indicates the reference signal resources of the first serving cell for the first condition.

[0120] As an embodiment, an LTM-CSI-ResourceConfig in the first RRC message indicates the reference signal resources of the first serving cell for measurement.

[0121] As an embodiment, the reference signal resources for measurement are SSB (Synchronization Signal Block) resources.

[0122] As an embodiment, the reference signal resources for measurement are CSI (Channel State Information)-RS (Reference Signal) resources.

[0123] As an embodiment, the reference signal resources for measurement are any one of SSB resources or CSI-RS resources.

[0124] As an embodiment, the first RRC message includes the identifier of the first candidate cell.

[0125] As an embodiment, the first RRC message includes an LTM-CandidateId, and the LTM-CandidateId indicates the first candidate cell.

[0126] As an embodiment, the first candidate cell is a candidate cell.

[0127] As an example, the first candidate cell is an LTM candidate cell.

[0128] As an example, the first candidate cell is an LTM candidate cell and the first candidate cell is a CHO candidate cell.

[0129] As an example, the first candidate cell is an LTM candidate cell and the first candidate cell is a CPC candidate cell.

[0130] As an example, the first condition is for LTM.

[0131] As an example, the first condition is for an event-triggered L1 measurement report for LTM.

[0132] As an example, the first condition is to trigger a measurement report for the first candidate cell.

[0133] As an example, the first condition is to trigger an L1 measurement report for the first candidate cell.

[0134] As an example, the first condition is to trigger an L1 measurement report for the first candidate cell.

[0135] As an example, the first condition is to trigger an event-triggered L1 measurement report for the first candidate cell.

[0136] As an example, the first condition is a trigger event for an event-triggered L1 measurement report for the first candidate cell.

[0137] As an example, the first condition is part of a trigger event for an event-triggered L1 measurement report for the first candidate cell.

[0138] As an example, the first condition is Event LTM2.

[0139] As an example, the first condition is the entry condition for Event LTM2.

[0140] As an example, the first condition is Event LTM3.

[0141] As an example, the first condition is the entry condition for Event LTM3.

[0142] As an example, the first condition is Event LTM4.

[0143] As an example, the first condition is the entry condition of Event LTM4.

[0144] As an example, the first condition is Event LTM5.

[0145] As an example, the first condition is the entry condition of Event LTM5.

[0146] As an example, the first condition is configured for a conditional LTM.

[0147] As an example, within the first time interval, the first condition is considered as the execution condition of a conditional LTM.

[0148] As an example, the protocol layer below the RRC sublayer is the MAC sublayer.

[0149] As an example, the protocol layer below the RRC sublayer is the physical layer.

[0150] As an example, the first signaling is a handover command.

[0151] As an example, the first signaling is a handover command, and the first signaling indicates the first candidate cell.

[0152] As an example, the first signaling is an RRC message.

[0153] As an example, the first signaling is a MAC CE (Control Element).

[0154] As an example, the first signaling is an LTM Cell Switch Command MAC CE.

[0155] As an example, the first signaling is a DCI (Downlink Control Information).

[0156] As an example, the first signaling indicates the first identifier of the first candidate cell; wherein, the first RRC message configures the first identifier of the first candidate cell.

[0157] As an example, the first signaling indicates the first identifier of the first candidate cell; wherein, a signaling other than the first RRC message configures the first identifier of the first candidate cell.

[0158] As an example, the first signaling includes a Target Configuration ID field, and the Target Configuration ID field indicates the first identifier of the first candidate cell.

[0159] As an example, the Target Configuration ID field is associated with the first identifier of the first candidate cell.

[0160] As an example, the Target Configuration ID field is set to the first identifier of the first candidate cell.

[0161] As an example, the Target Configuration ID field is set to the difference between the first identifier of the first candidate cell and 1.

[0162] As an example, the first identifier of the first candidate cell indicates the first candidate cell.

[0163] As an example, the first identifier of the first candidate cell is the ltm-CandidateId of the first candidate cell.

[0164] As an example, the first identifier of the first candidate cell is the PCI of the first candidate cell.

[0165] As an example, the first handover command includes a TCI (Transmission Configuration Indication) state ID field, and the TCI state ID field indicates a TCI state of the first candidate cell.

[0166] As an example, the first handover command includes a UL (Uplink) TCI state ID field, and the UL TCI state ID field indicates a TCI state of the first candidate cell.

[0167] As an example, the signaling of the protocol layer below the RRC sublayer is DCI.

[0168] As an example, the signaling of the protocol layer below the RRC sublayer is MAC CE.

[0169] As an example, the first signaling is an LTM Cell Switch Command MAC CE.

[0170] As an embodiment, one field in the first signaling indicates the first candidate cell.

[0171] As an embodiment, the first signaling includes a Target Configuration ID field, and the Target Configuration ID field indicates the first candidate cell.

[0172] As an embodiment, within the time interval between receiving the first signaling and switching to the first candidate cell, no signaling indicating switching to the first candidate cell is received.

[0173] As an embodiment, within the time interval between receiving the first signaling and switching to the first candidate cell, no radio link failure occurs.

[0174] As an embodiment, within the time interval between receiving the first signaling and switching to the first candidate cell, the terminal remains in the RRC_CONNECTED state all the time.

[0175] As an embodiment, within the time interval between receiving the first signaling and switching to the first candidate cell, the first serving cell is maintained.

[0176] As an embodiment, within the time interval between receiving the first signaling and switching to the first candidate cell, the terminal monitors the PDCCH scrambled by C-RNTI for CRC on the first serving cell.

[0177] As an embodiment, "accompanying the first signaling" means: as a response to receiving the first signaling.

[0178] As an embodiment, "accompanying the first signaling" means: after receiving the first signaling.

[0179] As an embodiment, "accompanying the first signaling" means: when the first signaling is valid.

[0180] As an embodiment, within the first time interval, the first signaling is valid.

[0181] As an embodiment, within the first time interval, if a condition is satisfied, the first signaling is valid; wherein, the condition can be based on measurement, or time, or location, or speed, or a combination thereof, etc.

[0182] As an embodiment, "accompanying the first signaling" means: within the first time interval, the start time of the first time interval depends on the first signaling.

[0183] As an embodiment, the switching to the first candidate cell includes: indicating to a higher layer to switch to the first candidate cell.

[0184] As an embodiment, the switching to the first candidate cell includes: indicating to a higher layer that an LTM cell switch procedure is triggered.

[0185] As an embodiment, the switching to the first candidate cell includes: switching to the first candidate cell through an LTM cell switch procedure.

[0186] As an embodiment, the switching to the first candidate cell depending on the first condition being satisfied within a first time interval means that the switching to the first candidate cell is related to the first condition being satisfied within the first time interval.

[0187] As an embodiment, the switching to the first candidate cell depending on the first condition being satisfied within a first time interval means that the first condition being satisfied within the first time interval is used to determine the switching to the first candidate cell.

[0188] As an embodiment, the switching to the first candidate cell depending on the first condition being satisfied within a first time interval means that if the first condition is not satisfied within the first time interval, the switching to the first candidate cell is not performed.

[0189] As an embodiment, the switching to the first candidate cell depending on the first condition being satisfied within a first time interval means that the switching to the first candidate cell is performed on the premise that the first condition is satisfied within the first time interval.

[0190] As an embodiment, the switching to the first candidate cell depending on the first condition being satisfied within a first time interval means that when the first condition is satisfied within the first time interval, switch to the first candidate cell.

[0191] As an embodiment, the first time interval is at least one non - continuous period of time.

[0192] As an embodiment, the first time interval is a continuous period of time.

[0193] As an embodiment, the first time interval is multiple non - continuous periods of time.

[0194] As an embodiment, the first time interval includes at least one time interval.

[0195] As an example, the first time interval is maintained at the RRC sublayer.

[0196] As an example, the first time interval is maintained at the MAC sublayer.

[0197] As an example, the first time interval is the running time of a timer; the start time of the first time interval is the time when the timer starts.

[0198] As an example, within the first time interval means that a timer is running; the start time of the first time interval is the time when the timer starts.

[0199] As an example, the first time interval is the running time of a time window; the start time of the first time interval is the time when the time window starts.

[0200] As an example, within the first time interval means that a time window is running; the start time of the first time interval is the time when the time window starts.

[0201] As an example, the start time of the first time interval depends on the first signaling means that the start time of the first time interval depends on the time when the first signaling is received.

[0202] As an example, the start time of the first time interval depends on the first signaling means that the start time of the first time interval is not earlier than the time when the first signaling is received.

[0203] As an example, the start time of the first time interval depends on the first signaling means that the start time of the first time interval is the time when the first signaling is received.

[0204] As an example, the start time of the first time interval depends on the first signaling means that the start time of the first time interval is a specified time after the first signaling is received.

[0205] As an example, the length of the first time interval is pre-configured.

[0206] As an example, the length of the first time interval is fixed.

[0207] As an example, the first RRC message includes a first time length, and the length of the first time interval is not greater than the first time length.

[0208] As an example, the measurement result of the first candidate cell includes the measurement quality of at least one reference signal resource for the first candidate cell.

[0209] As an example, the measurement result of the first candidate cell includes the sum of the measurement quality of at least one reference signal resource for the first candidate cell and at least one offset.

[0210] As an example, the measurement result of the first candidate cell includes the index of at least one reference signal resource for the first candidate cell.

[0211] As a sub - example of the above example, the indexes of the at least one reference signal resource of the first candidate cell are sorted in ascending order of the index number.

[0212] As a sub - example of the above example, the indexes of the at least one reference signal resource of the first candidate cell are sorted in ascending order of the measurement quality.

[0213] As a sub - example of the above example, the indexes of the at least one reference signal resource of the first candidate cell are sorted in descending order of the measurement quality.

[0214] As an example, the measurement quality of the at least one reference signal resource of the first candidate cell is an RSRP.

[0215] As an example, the measurement quality of the at least one reference signal resource of the first candidate cell is an RSRQ.

[0216] As an example, the measurement quality of the at least one reference signal resource of the first candidate cell is at least one RSRP.

[0217] As an example, the measurement quality of the at least one reference signal resource of the first candidate cell is at least one RSRQ.

[0218] As an example, the measurement quality of the at least one reference signal resource of the first candidate cell is unfiltered.

[0219] As an example, the measurement quality of the at least one reference signal resource of the first candidate cell is at least one measurement value of the at least one reference signal resource of the first candidate cell.

[0220] As an example, the measurement quality of the at least one reference signal resource of the first candidate cell is a value obtained by a first operation on at least one measurement value of the at least one reference signal resource of the first candidate cell.

[0221] As an embodiment, the measurement result of the first serving cell includes the measurement quality of at least one reference signal resource for the first serving cell.

[0222] As an embodiment, the measurement result of the first serving cell is the sum of the measurement quality of at least one reference signal resource for the first serving cell and at least one offset.

[0223] As an embodiment, the measurement result of the first serving cell includes the index of at least one reference signal resource for the first serving cell.

[0224] As a sub - embodiment of the above - mentioned embodiment, the indexes of the at least one reference signal resource of the first serving cell are sorted in ascending order of the index number.

[0225] As a sub - embodiment of the above - mentioned embodiment, the indexes of the at least one reference signal resource of the first serving cell are sorted in ascending order of the measurement quality.

[0226] As a sub - embodiment of the above - mentioned embodiment, the indexes of the at least one reference signal resource of the first serving cell are sorted in descending order of the measurement quality.

[0227] As an embodiment, the measurement quality of the at least one reference signal resource of the first serving cell is an RSRP (Reference Signal Received Power).

[0228] As an embodiment, the measurement quality of the at least one reference signal resource of the first serving cell is an RSRQ (Reference Signal Received Quality).

[0229] As an embodiment, the measurement quality of the at least one reference signal resource of the first serving cell is at least one RSRP.

[0230] As an embodiment, the measurement quality of the at least one reference signal resource of the first serving cell is at least one RSRQ.

[0231] As an embodiment, the measurement quality of the at least one reference signal resource of the first serving cell is not filtered.

[0232] As an embodiment, the measurement quality of the at least one reference signal resource of the first serving cell is at least one measurement value of the at least one reference signal resource of the first serving cell.

[0233] As an example, the measurement quality of the at least one reference signal resource of the first serving cell is a value obtained by performing a first operation on at least one measurement value of the at least one reference signal resource of the first serving cell.

[0234] As an example, the measurement quality is RSRP.

[0235] As an example, the measurement quality is L1-RSRP.

[0236] As an example, the measurement quality is SS-RSRP.

[0237] As an example, the measurement quality is CSI-RSRP.

[0238] As an example, the measurement quality is RSRQ.

[0239] As an example, the measurement quality is SINR (Signal to Interference plus Noise Ratio).

[0240] As an example, the measurement quality is unfiltered.

[0241] As an example, the measurement quality is filtered.

[0242] As an example, the measurement value is the RSRP of one path of a reference signal.

[0243] As an example, the measurement value is the RSRP of the strongest path of a reference signal.

[0244] As an example, the measurement value is the average RSRP of multiple paths of a reference signal.

[0245] As an example, the measurement value is RSRP.

[0246] As an example, the measurement value is the interference level.

[0247] As an example, the measurement value is the received power.

[0248] As an example, the measurement value is the received power level.

[0249] As an example, the measurement value is of L1.

[0250] As an example, the measurement value is a sampled value.

[0251] As an example, the measurement value is the average of multiple sampled values.

[0252] As an example, the first operation includes averaging.

[0253] As an example, the averaging is weighted averaging.

[0254] As an example, the averaging is arithmetic averaging.

[0255] As an example, the first operation includes taking the extreme value.

[0256] As an example, the extreme value is the minimum value.

[0257] As an example, the extreme value is the maximum value.

[0258] As an example, the first operation includes filtering.

[0259] As an example, the filtering is L1 filtering.

[0260] As an example, the filtering is L3 filtering.

[0261] As an example, the filtering coefficient of the L1 filtering is preconfigured.

[0262] As an example, the filtering coefficient of the L1 filtering is predefined.

[0263] As an example, the filtering coefficient of the L3 filtering is preconfigured.

[0264] As an example, the filtering coefficient of the L3 filtering is predefined.

[0265] As an example, for the first serving cell and the second cell, the filtering coefficients used in the first operation are the same.

[0266] As an example, for the first serving cell and the second cell, the filtering coefficients used in the first operation are different.

[0267] As an example, for the first serving cell and the second cell, the filtering coefficients used in the first operation are independently configured.

[0268] As an example, the first operation is averaging.

[0269] As an example, the first operation is taking the extreme value.

[0270] As an example, the first operation is filtering.

[0271] As an example, the first condition includes that the measurement result of the first candidate cell is better than the first threshold.

[0272] As a sub - embodiment of the above - mentioned embodiment, the first threshold is pre - configured.

[0273] As a sub - embodiment of the above - mentioned embodiment, the first threshold is configurable.

[0274] As a sub - embodiment of the above - mentioned embodiment, the first threshold is the measurement result of the first serving cell.

[0275] As an embodiment, the first condition includes that the measurement result of the first serving cell is worse than the second threshold.

[0276] As a sub - embodiment of the above - mentioned embodiment, the second threshold is pre - configured.

[0277] As a sub - embodiment of the above - mentioned embodiment, the second threshold is configurable.

[0278] As an embodiment, the first condition includes that the measurement result of the first candidate cell is better than the first threshold, and the measurement result of the first serving cell is worse than the second threshold.

[0279] As a sub - embodiment of the above - mentioned embodiment, the first threshold and the second threshold are pre - configured.

[0280] As a sub - embodiment of the above - mentioned embodiment, the first threshold and the second threshold are configurable.

[0281] As an embodiment, the first serving cell is a PCell (Primary Cell).

[0282] As an embodiment, the first serving cell is a PSCell (Primary SCG (Secondary CellGroup) Cell).

[0283] As an embodiment, the first candidate cell is a candidate cell of the first serving cell.

[0284] Example 2

[0285] Embodiment 2 exemplifies a schematic diagram of a network architecture according to an embodiment of the present application, as shown in the appendix Figure 2 shown. Appendix Figure 2Describes the network architecture 200. The network architecture 200 is a 5G NR (New Radio) / LTE (Long-Term Evolution) / LTE-A (Long-Term Evolution Advanced) system, or the network architecture 200 is a 5G+ network architecture, or the network architecture 200 is a 6G network architecture, or the network architecture 200 is a network architecture that will continue to evolve in the future by 3GPP; the network architecture 200 can be referred to as 5GS (5G System) / EPS (Evolved Packet System), or the network architecture 200 can be referred to as 6GS (6G System); the network architecture 200 includes at least one of UE (User Equipment) 201, RAN (Radio Access Network) 202, core network 210, HSS (Home Subscriber Server) / UDM (Unified Data Management) 220, and Internet service 230. The network architecture 200 can be interconnected with other access networks, but these entities / interfaces are not shown for simplicity. As shown in the figure, the network architecture 200 provides packet-switched services. However, those skilled in the art will readily understand that the various concepts presented throughout this application can be extended to networks that provide circuit-switched services or other cellular networks. The RAN includes node 203 and other nodes 204. Node 203 provides termination of user and control plane protocols towards UE 201. Node 203 can be connected to other nodes 204 via the Xn interface (e.g., backhaul) / X2 interface. Node 203 can also be referred to as a base station, base transceiver station, radio base station, radio transceiver, transceiver function, basic service set (BSS), extended service set (ESS), TRP (Transmission and Reception Point), or some other suitable term. The core network 210 is a 5GC (5G Core Network) / EPC (Evolved Packet Core), or the core network 210 is a 6GC; node 203 provides an access point to the core network 210 for UE 201. Examples of UE 201 include cellular phones, smartphones, Session Initiation Protocol (SIP) phones, laptop computers, personal digital assistants (PDAs), satellite radios, non-terrestrial base station communications, satellite mobile communications, global positioning systems, multimedia devices, video devices, digital audio players (e.g., MP3 players), cameras, game consoles, drones, aircraft, narrowband Internet of Things devices, machine type communication devices, land vehicles, automobiles, wearable devices, or any other similar functional device.Those skilled in the art may also refer to UE201 as a mobile station, subscriber station, mobile unit, subscriber unit, radio unit, remote unit, mobile device, radio device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless terminal, remote terminal, handset, user agent, mobile client, client, or some other suitable term. Node 203 is connected to the core network 210 through the S1 / NG interface. The core network 210 includes an MME (Mobility Management Entity) / AMF (Authentication Management Field) / SMF (Session Management Function) 211, other MME / AMF / SMFs 214, an S-GW (Service Gateway) / UPF (User Plane Function) 212, and a P-GW (Packet Date Network Gateway) / UPF 213. The MME / AMF / SMF 211 is a control node that processes the signaling between the UE201 and the core network 210. Generally, the MME / AMF / SMF 211 provides bearer and connection management. All user IP (Internet Protocol) packets are transmitted through the S-GW / UPF 212, and the S-GW / UPF 212 itself is connected to the P-GW / UPF 213. The P-GW provides UE IP address allocation and other functions. The P-GW / UPF 213 is connected to the Internet service 230. The Internet service 230 includes the operator's corresponding Internet protocol service, which may specifically include the Internet, intranet, IMS (IP Multimedia Subsystem), and packet-switched streaming service.

[0286] As an embodiment, the UE201 corresponds to the terminal in the present application.

[0287] As an embodiment, the UE201 is the terminal in the present application.

[0288] As an embodiment, the UE201 is a User Equipment (UE).

[0289] As an embodiment, the UE201 is a Base Station (BS) device.

[0290] As an embodiment, the UE201 is a Relay device.

[0291] As an example, the UE 201 is a gateway device.

[0292] As an example, the node 203 corresponds to the base station in this application.

[0293] As an example, the node 203 is the base station in this application.

[0294] As an example, the node 203 is a base station device.

[0295] As an example, the node 203 is a relay device.

[0296] As an example, the node 203 is a gateway device.

[0297] As an example, the user equipment supports 3GPP Release 19.

[0298] As an example, the user equipment supports 5G.

[0299] As an example, the user equipment supports 6G.

[0300] As an example, the user equipment supports Radio Link Monitoring (RLM).

[0301] As an example, the user equipment supports handover.

[0302] As an example, the user equipment supports CHO.

[0303] As an example, the user equipment supports CPC.

[0304] As an example, the user equipment supports LTM.

[0305] As an example, the user equipment supports intra-CU LTM.

[0306] As an example, the user equipment supports inter-CU LTM.

[0307] As an example, the user equipment supports conditional LTM.

[0308] As an example, the user equipment supports event-triggered measurement reporting for LTM.

[0309] As an embodiment, the user equipment supports the transmission of a Non-Terrestrial Network (NTN).

[0310] As an embodiment, the user equipment supports the transmission of a Terrestrial Network.

[0311] As an embodiment, the user equipment supports Dual Connection (DC) transmission.

[0312] As an embodiment, the user equipment includes a device that supports low-latency and high-reliability transmission.

[0313] As an embodiment, the user equipment may be a mobile terminal, and the mobile terminal may be a mobile phone, an iPad, a computer, a watch, or a ring; the user equipment may also be a wearable device, and the wearable device may be a watch, a ring, shoes, a hat, clothing, glasses, etc.; the user equipment may also be an aircraft; the user equipment may also be a vehicle-mounted terminal; the user equipment may also be a shipborne terminal; the user equipment may also be an Internet of Things terminal; the user equipment may also be a terminal of an industrial Internet of Things; the user equipment may also be a test device; the user equipment may also be a signaling tester; the user equipment may also be an IAB (Integrated Access and Backhaul)-MT.

[0314] As an embodiment, the base station equipment supports the transmission in a non-terrestrial network.

[0315] As an embodiment, the base station equipment supports the transmission of a terrestrial network.

[0316] As an embodiment, the base station equipment includes a Base Transceiver Station (BTS).

[0317] As an embodiment, the base station equipment includes a Node B (NB); the Node B may be a gNB, an eNB, an ng-eNB, or an en-gNB; the base station equipment may include a Centralized Unit (CU); the base station equipment may also include a Distributed Unit (DU); the base station equipment may also include a Transmitter Receiver Point (TRP).

[0318] As an example, the base station device may be a macro cellular base station, a micro cell base station, a pico cell base station, or a femtocell; the base station device may also be a flying platform device or a satellite device; the base station device may also be a test device or a signaling tester; the base station device may also be a gateway device; the base station device may also be an IAB device; the IAB device includes at least one of an IAB-node, an IAB-donor, an IAB-donor-CU, an IAB-donor-DU, an IAB-DU, or an IAB-MT.

[0319] As an example, the relay device may include a relay; the relay may be an L3 relay or an L2 relay; the relay device may also include a router; the relay device may also include a switch; the relay device may also include a gateway device; the relay device may also include at least a part of a user equipment; the relay device may also include at least a part of a base station device.

[0320] Example 3

[0321] Embodiment 3 shows a schematic diagram of an embodiment of a radio protocol architecture for a user plane and a control plane according to the present application, as shown in the appendix Figure 3 as follows. Figure 3 It is a schematic diagram illustrating an embodiment of a radio protocol architecture for a user plane 350 and a control plane 300. Figure 3The radio protocol architecture for controlling plane 300 is shown in three layers: Layer 1, Layer 2, and Layer 3. Layer 1 (L1 layer) is the lowest layer and implements various PHY (Physical Layer) signal processing functions. The L1 layer will be referred to as PHY301 herein. Layer 2 (L2 layer) 305 is above PHY301 and includes a MAC (Medium Access Control) sublayer 302, an RLC (Radio Link Control) sublayer 303, and a PDCP (Packet Data Convergence Protocol) sublayer 304. The PDCP sublayer 304 provides multiplexing between different radio bearers and logical channels. The PDCP sublayer 304 also provides security by encrypting data packets and provides handover support. The RLC sublayer 303 provides segmentation and reassembly of upper layer data packets, retransmission of lost data packets, and reordering of data packets to compensate for disordered reception due to HARQ (Hybrid Automatic Repeat Request). The MAC sublayer 302 provides multiplexing between logical and transport channels. The MAC sublayer 302 is also responsible for allocating various radio resources (e.g., resource blocks) in a cell. The MAC sublayer 302 is also responsible for HARQ operations. The RRC (Radio Resource Control) sublayer 306 in Layer 3 (L3 layer) of the control plane 300 is responsible for obtaining radio resources (i.e., radio bearers) and configuring the lower layers using RRC signaling. The radio protocol architecture of the user plane 350 includes Layer 1 (L1 layer) and Layer 2 (L2 layer). In the user plane 350, the radio protocol architecture is generally the same as the corresponding layers and sublayers in the control plane 300 for the physical layer 351, the PDCP sublayer 354 in the L2 layer 355, the RLC sublayer 353 in the L2 layer 355, and the MAC sublayer 352 in the L2 layer 355. However, the PDCP sublayer 354 also provides header compression for upper layer data packets to reduce radio transmission overhead. The SDAP (Service Data Adaptation Protocol) sublayer 356 is also included in the L2 layer 355 of the user plane 350. The SDAP sublayer 356 is responsible for mapping between QoS flows and data radio bearers (DRBs) to support service diversity.

[0322] As an example, the Figure 3 radio protocol architecture in

[0323] As an example, the Figure 3The wireless protocol architecture in [reference] is applicable to the base station in this application.

[0324] As an example, the first RRC message in this application is generated by the RRC 306.

[0325] As an example, the first signaling in this application is generated by the MAC 302 or MAC 352.

[0326] As an example, the first signaling in this application is generated by the PHY 301 or PHY 351.

[0327] As an example, the first message in this application is generated by the RRC 306.

[0328] As an example, the first message in this application is generated by the MAC 302 or MAC 352.

[0329] As an example, the first message in this application is generated by the PHY 301 or PHY 351.

[0330] As an example, the second message in this application is generated by the RRC 306.

[0331] As an example, the second message in this application is generated by the MAC 302 or MAC 352.

[0332] As an example, the second message in this application is generated by the PHY 301 or PHY 351.

[0333] As an example, the first measurement report in this application is generated by the RRC 306.

[0334] As an example, the first measurement report in this application is generated by the MAC 302 or MAC 352.

[0335] As an example, the first measurement report in this application is generated by the PHY 301 or PHY 351.

[0336] Example 4

[0337] Example 4 shows a schematic diagram of a first communication device and a second communication device according to this application, as shown in the appendix Figure 4 as shown. Figure 4 is a block diagram of a first communication device 450 and a second communication device 410 that communicate with each other in an access network.

[0338] The first communication device 450 includes a controller / processor 459, a memory 460, a data source 467, a transmit processor 468, a receive processor 456, a multi-antenna transmit processor 457, a multi-antenna receive processor 458, a transmitter / receiver 454, and an antenna 452.

[0339] The second communication device 410 includes a controller / processor 475, a memory 476, a receive processor 470, a transmit processor 416, a multi-antenna receive processor 472, a multi-antenna transmit processor 471, a transmitter / receiver 418, and an antenna 420.

[0340] In the transmission from the second communication device 410 to the first communication device 450, at the second communication device 410, upper layer data packets from the core network are provided to the controller / processor 475. The controller / processor 475 implements the functions of the L2 layer. In the transmission from the second communication device 410 to the first communication device 450, the controller / processor 475 provides header compression, encryption, packet segmentation and reordering, multiplexing between logical and transport channels, and radio resource allocation to the first communication device 450 based on various priority metrics. The controller / processor 475 is also responsible for retransmission of lost packets and signaling to the first communication device 450. The transmit processor 416 and the multi-antenna transmit processor 471 implement various signal processing functions for the L1 layer (i.e., the physical layer). The transmit processor 416 implements encoding and interleaving to facilitate forward error correction (FEC) at the second communication device 410, and mapping of signal constellations based on various modulation schemes (e.g., binary phase shift keying (BPSK), quadrature phase shift keying (QPSK), M-phase shift keying (M-PSK), M-quadrature amplitude modulation (M-QAM)). The multi-antenna transmit processor 471 performs digital spatial precoding on the encoded and modulated symbols, including codebook-based precoding and non-codebook-based precoding, and beamforming processing, to generate one or more spatial streams. The transmit processor 416 then maps each spatial stream to subcarriers, multiplexes with reference signals (e.g., pilots) in the time domain and / or frequency domain, and then uses the inverse fast Fourier transform (IFFT) to generate a physical channel carrying a time-domain multi-carrier symbol stream. Subsequently, the multi-antenna transmit processor 471 performs a transmit analog precoding / beamforming operation on the time-domain multi-carrier symbol stream. Each transmitter 418 converts the baseband multi-carrier symbol stream provided by the multi-antenna transmit processor 471 into a radio frequency stream and then provides it to different antennas 420.

[0341] In the transmission from the second communication device 410 to the first communication device 450, at the first communication device 450, each receiver 454 receives signals via its respective antenna 452. Each receiver 454 recovers the information modulated onto the radio frequency carrier and converts the radio frequency stream into a baseband multi-carrier symbol stream for providing to the receive processor 456. The receive processor 456 and the multi-antenna receive processor 458 perform various signal processing functions of the L1 layer. The multi-antenna receive processor 458 performs receive analog precoding / beamforming operations on the baseband multi-carrier symbol stream from the receivers 454. The receive processor 456 uses the fast Fourier transform (FFT) to convert the baseband multi-carrier symbol stream after the receive analog precoding / beamforming operations from the time domain to the frequency domain. In the frequency domain, the physical layer data signal and the reference signal are demultiplexed by the receive processor 456, where the reference signal will be used for channel estimation, and the data signal recovers any spatial streams destined for the first communication device 450 after multi-antenna detection in the multi-antenna receive processor 458. The symbols on each spatial stream are demodulated and recovered in the receive processor 456, and soft decisions are generated. Subsequently, the receive processor 456 decodes and de-interleaves the soft decisions to recover the upper layer data and control signals transmitted by the second communication device 410 on the physical channel. Subsequently, the upper layer data and control signals are provided to the controller / processor 459. The controller / processor 459 performs the functions of the L2 layer. The controller / processor 459 may be associated with a memory 460 that stores program code and data. The memory 460 may be referred to as a computer-readable medium. In the transmission from the second communication device 410 to the first communication device 450, the controller / processor 459 provides demultiplexing between transport and logical channels, packet reassembly, decryption, header decompression, control signal processing to recover upper layer data packets from the core network. Subsequently, the upper layer data packets are provided to all protocol layers above the L2 layer. Various control signals may also be provided to the L3 for L3 processing.

[0342] In the transmission from the first communication device 450 to the second communication device 410, at the first communication device 450, a data source 467 is used to provide upper layer data packets to a controller / processor 459. The data source 467 represents all protocol layers above the L2 layer. Similar to the transmit function described at the second communication device 410 in the transmission from the second communication device 410 to the first communication device 450, the controller / processor 459 implements header compression, encryption, packet segmentation and reordering, and multiplexing between logical and transport channels based on radio resource allocation, and implements L2 layer functions for the user plane and the control plane. The controller / processor 459 is also responsible for retransmitting lost packets and signaling to the second communication device 410. A transmit processor 468 performs modulation mapping and channel coding processing, and a multi-antenna transmit processor 457 performs digital multi-antenna spatial precoding, including codebook-based precoding and non-codebook-based precoding, and beamforming processing. Subsequently, the transmit processor 468 modulates the generated spatial streams into multi-carrier / single-carrier symbol streams, and after passing through an analog precoding / beamforming operation in the multi-antenna transmit processor 457, provides them to different antennas 452 via a transmitter 454. Each transmitter 454 first converts the baseband symbol stream provided by the multi-antenna transmit processor 457 into a radio frequency symbol stream and then provides it to the antenna 452.

[0343] In the transmission from the first communication device 450 to the second communication device 410, the functions at the second communication device 410 are similar to the receive functions described at the first communication device 450 in the transmission from the second communication device 410 to the first communication device 450. Each receiver 418 receives a radio frequency signal through its corresponding antenna 420, converts the received radio frequency signal into a baseband signal, and provides the baseband signal to a multi-antenna receive processor 472 and a receive processor 470. The receive processor 470 and the multi-antenna receive processor 472 jointly implement L1 layer functions. A controller / processor 475 implements L2 layer functions. The controller / processor 475 may be associated with a memory 476 that stores program code and data. The memory 476 may be referred to as a computer-readable medium. In the transmission from the first communication device 450 to the second communication device 410, the controller / processor 475 provides demultiplexing between transport and logical channels, packet reassembly, decryption, header decompression, and control signal processing to recover upper layer data packets from the UE 450. The upper layer data packets from the controller / processor 475 may be provided to the core network.

[0344] As an example, the first communication device 450 includes: at least one processor and at least one memory, the at least one memory including computer program code; the at least one memory and the computer program code are configured to be used with the at least one processor, and the first communication device 450 is at least configured to: receive a first RRC message; wherein the first RRC message includes configuration information of a first candidate cell, and the first RRC message includes a first condition; receive a first signaling; wherein the first signaling is a signaling of a protocol layer below the RRC sublayer, and the first signaling indicates a handover to the first candidate cell; accompany the first signaling and hand over to the first candidate cell; wherein the handover to the first candidate cell depends on the first condition being satisfied within a first time interval; the start time of the first time interval depends on the first signaling; the first condition includes at least one of the measurement result of the first candidate cell being better than a first threshold or the measurement result of the first serving cell being worse than a second threshold.

[0345] As an example, the first communication device 450 includes: a memory storing a computer-readable instruction program, the computer-readable instruction program generating actions when executed by at least one processor, the actions including: receive a first RRC message; wherein the first RRC message includes configuration information of a first candidate cell, and the first RRC message includes a first condition; receive a first signaling; wherein the first signaling is a signaling of a protocol layer below the RRC sublayer, and the first signaling indicates a handover to the first candidate cell; accompany the first signaling and hand over to the first candidate cell; wherein the handover to the first candidate cell depends on the first condition being satisfied within a first time interval; the start time of the first time interval depends on the first signaling; the first condition includes at least one of the measurement result of the first candidate cell being better than a first threshold or the measurement result of the first serving cell being worse than a second threshold.

[0346] As an example, the second communication device 410 includes: at least one processor and at least one memory, the at least one memory including computer program code; the at least one memory and the computer program code are configured to be used together with the at least one processor. The second communication device 410 is at least configured to: send a first RRC message; wherein, the first RRC message includes configuration information of a first candidate cell, and the first RRC message includes a first condition; send a first signaling; wherein, the first signaling is a signaling of a protocol layer below the RRC sublayer, and the first signaling indicates a handover to the first candidate cell; along with the first signaling, the receiver of the first signaling switches to the first candidate cell; wherein, the handover to the first candidate cell depends on the first condition being satisfied within a first time interval; the start time of the first time interval depends on the first signaling; the first condition includes at least one of the measurement result of the first candidate cell being better than a first threshold or the measurement result of the first serving cell being worse than a second threshold.

[0347] As an example, the second communication device 410 includes: a memory storing a computer-readable instruction program, the computer-readable instruction program generating actions when executed by at least one processor, the actions including: sending a first RRC message; wherein, the first RRC message includes configuration information of a first candidate cell, and the first RRC message includes a first condition; sending a first signaling; wherein, the first signaling is a signaling of a protocol layer below the RRC sublayer, and the first signaling indicates a handover to the first candidate cell; along with the first signaling, the receiver of the first signaling switches to the first candidate cell; wherein, the handover to the first candidate cell depends on the first condition being satisfied within a first time interval; the start time of the first time interval depends on the first signaling; the first condition includes at least one of the measurement result of the first candidate cell being better than a first threshold or the measurement result of the first serving cell being worse than a second threshold.

[0348] As an example, at least one of the antenna 452, the receiver 454, the receiving processor 456, and the controller / processor 459 is used to receive the first RRC message.

[0349] As an example, at least one of the antenna 420, the transmitter 418, the transmitting processor 416, and the controller / processor 475 is used to send the first RRC message.

[0350] As an example, at least one of the antenna 452, the receiver 454, the receiving processor 456, and the controller / processor 459 is used to receive the first signaling.

[0351] As an example, at least one of the antenna 420, the transmitter 418, the transmit processor 416, and the controller / processor 475 is used to send first signaling.

[0352] As an example, at least one of the antenna 452, the transmitter 454, the transmit processor 468, and the controller / processor 459 is used to send a first message.

[0353] As an example, at least one of the antenna 420, the receiver 418, the receive processor 470, and the controller / processor 475 is used to receive a first message.

[0354] As an example, at least one of the antenna 452, the transmitter 454, the transmit processor 468, and the controller / processor 459 is used to send a second message.

[0355] As an example, at least one of the antenna 420, the receiver 418, the receive processor 470, and the controller / processor 475 is used to receive a second message.

[0356] As an example, at least one of the antenna 452, the transmitter 454, the transmit processor 468, and the controller / processor 459 is used to send a first measurement report.

[0357] As an example, at least one of the antenna 420, the receiver 418, the receive processor 470, and the controller / processor 475 is used to receive a first measurement report.

[0358] As an example, the first communication device 450 corresponds to the terminal in this application.

[0359] As an example, the first communication device 450 is the terminal in this application.

[0360] As an example, the second communication device 410 corresponds to the base station in this application.

[0361] As an example, the second communication device 410 is the base station in this application.

[0362] As an example, the first communication device 450 is a user equipment.

[0363] As an example, the first communication device 450 is a base station device.

[0364] As an example, the first communication device 450 is a relay device.

[0365] As an example, the second communication device 410 is a user equipment.

[0366] As an example, the second communication device 410 is a base station device.

[0367] As an example, the second communication device 410 is a relay device.

[0368] Example 5

[0369] Embodiment 5 exemplifies a wireless signal transmission flowchart according to an embodiment of the present application, as shown in the appendix Figure 5 It should be specifically noted that the order in this example does not limit the signal transmission order and implementation order in the present application.

[0370] For Terminal U01 ,

[0371] In step S5101, a first RRC message is received; wherein, the first RRC message includes configuration information of a first candidate cell, and the first RRC message includes a first condition;

[0372] In step S5102, as a response to the satisfaction of a second condition, a first measurement report is sent; wherein, the first RRC message includes the second condition; the second condition includes at least one of the measurement result of the first candidate cell being better than a third threshold or the measurement result of the first serving cell being worse than a fourth threshold;

[0373] In step S5103, a first signaling is received; wherein, the first signaling is a signaling of a protocol layer below the RRC sublayer, and the first signaling indicates a handover to the first candidate cell;

[0374] In step S5104, a first time interval is started; wherein, starting the first time interval depends on at least the reception of the first signaling;

[0375] In step S5105, as a response to the reception of the first signaling, a first timing advance timer is started; wherein, the first signaling indicates the timing advance of the first candidate cell;

[0376] In step S5106, after the first signaling is received, a first message is sent; wherein, the first message indicates that the first condition is not satisfied when the first signaling is received;

[0377] In step S5107, as a response to the satisfaction of the first condition within the first time interval, a second message is sent; wherein, the second message indicates that the first condition is satisfied;

[0378] In step S5108, switch to the first candidate cell along with the first signaling.

[0379] For Base Station N02 ,

[0380] In step S5201, send the first RRC message;

[0381] In step S5202, receive the first measurement report;

[0382] In step S5203, send the first signaling;

[0383] In step S5204, receive the first message;

[0384] In step S5205, receive the second message.

[0385] For Base Station N03 , send downlink signaling or receive uplink signaling on the first candidate cell.

[0386] In Embodiment 5, the switching to the first candidate cell depends on the first condition being satisfied within a first time interval; the start time of the first time interval depends on the first signaling; the first condition includes at least one of the measurement result of the first candidate cell being better than a first threshold or the measurement result of the first serving cell being worse than a second threshold.

[0387] As an embodiment, the terminal U01 is a UE.

[0388] As an embodiment, the terminal U01 is a test device.

[0389] As an embodiment, the terminal U01 is a relay.

[0390] As an embodiment, the terminal U01 is an IAB-node.

[0391] As an embodiment, the terminal U01 is an IAB-MT.

[0392] As an embodiment, the base station N02 is the base station to which the first serving cell belongs.

[0393] As an embodiment, the base station N02 is an NB.

[0394] As an embodiment, the base station N02 is an eNB.

[0395] As an embodiment, the base station N02 is a gNB.

[0396] As an example, the base station N02 is an IAB-DU.

[0397] As an example, the base station N02 is an IAB-donor.

[0398] As an example, the base station N03 is the base station to which the first candidate cell belongs.

[0399] As an example, the base station N03 is an NB.

[0400] As an example, the base station N03 is an eNB.

[0401] As an example, the base station N03 is a gNB.

[0402] As an example, the base station N03 is an IAB-DU.

[0403] As an example, the base station N03 is an IAB-donor.

[0404] As an example, the base station N03 is the base station N02.

[0405] As an example, the base station N03 is not the base station N02.

[0406] As an example, the base station N03 and the base station N02 belong to the same CU.

[0407] As an example, the base station N03 and the base station N02 belong to different CUs.

[0408] As an example, the terminal U01 is an IAB-node and the base station N02 is an IAB-donor. As an example, the terminal U01 is a UE and the base station N02 is a gNB.

[0409] As an example, the terminal U01 is a UE and the base station N02 is a relay.

[0410] As an example, there is a wireless connection between the terminal U01 and the base station N02.

[0411] As an example, there is a wired connection between the terminal U01 and the base station N02.

[0412] As an example, there is a connection through the Uu interface between the terminal U01 and the base station N02.

[0413] As an embodiment, the terminal U01 and the base station N02 are connected through an IAB interface.

[0414] As an embodiment, the terminal U01 and the base station N02 are connected through a PC5 interface.

[0415] As an embodiment, the base station N02 and the base station N03 are connected through an Xn interface.

[0416] As an embodiment, the base station N02 and the base station N03 are connected through an inter-base-station interface.

[0417] As an embodiment, the step S5104 is optional.

[0418] As an embodiment, the step S5104 does not exist.

[0419] As an embodiment, the step S5104 exists.

[0420] As an embodiment, the step S5105 is optional.

[0421] As an embodiment, the step S5105 does not exist.

[0422] As an embodiment, the step S5105 exists.

[0423] As an embodiment, the dashed box F5.1 is optional.

[0424] As an embodiment, the dashed box F5.1 does not exist.

[0425] As an embodiment, the dashed box F5.1 exists.

[0426] As an embodiment, the dashed box F5.2 is optional.

[0427] As an embodiment, the dashed box F5.2 does not exist.

[0428] As an embodiment, the dashed box F5.2 exists.

[0429] As an embodiment, the dashed box F5.3 is optional.

[0430] As an embodiment, the dashed box F5.3 does not exist.

[0431] As an embodiment, the dashed box F5.3 exists.

[0432] As an embodiment, the reception of the first signaling triggers the sending of the first message.

[0433] As an example, in response to receiving the first signaling, the first message is sent.

[0434] As an example, the first message is used to indicate that the first condition is not satisfied.

[0435] As an example, the first message explicitly indicates that the first condition is not satisfied.

[0436] As an example, the first message implicitly indicates that the first condition is not satisfied.

[0437] As an example, the name of the first message indicates that the first condition is not satisfied.

[0438] As an example, the first message includes a field that indicates that the first condition is not satisfied.

[0439] As an example, the field is a code point.

[0440] As an example, the field is a bit.

[0441] As an example, the value of the field is 1.

[0442] As an example, the first message is a measurement report.

[0443] As an example, the first message includes measurement results.

[0444] As an example, the first message includes at least one of the measurement results of the first candidate cell or the measurement results of the first serving cell; at least one of the measurement results of the first candidate cell or the measurement results of the first serving cell indicates that the first condition is satisfied.

[0445] As an example, when the first condition is satisfied, it triggers the first message to indicate that the first condition is not satisfied.

[0446] As an example, the first message includes an indication of the first condition, indicating that the first condition is not satisfied.

[0447] As an example, the first message is transmitted via PUSCH.

[0448] As an example, the first message is transmitted via PUCCH.

[0449] As an example, the first message is transmitted via PRACH.

[0450] As an example, the first message is an RRC message.

[0451] As an example, the first message is a MAC CE.

[0452] As an example, the first message is a UCI (Uplink Control Information).

[0453] As an example, in response to sending the first message, switch to the first candidate cell.

[0454] As an example, the terminal U01 receives a response to the first message; in response to receiving the response to the second message, switch to the first candidate cell.

[0455] As an example, the response to the first message is an ACK.

[0456] As an example, the response to the first message is a DCI.

[0457] As an example, the response to the first message is an RRC message.

[0458] As an example, the second message indicating that the first condition is satisfied means that the second message indicates that the first condition is satisfied within the first time interval.

[0459] As an example, the second message indicating that the first condition is satisfied means that the second message indicates that the first condition is satisfied and the terminal will switch to the first candidate cell.

[0460] As an example, the second message indicating that the first condition is satisfied means that in response to the first condition being satisfied, the second message indicates that the terminal will switch to the first candidate cell.

[0461] As an example, the second message indicating that the first condition is satisfied means that in response to the first condition being satisfied within the first time interval, the second message indicates that the terminal will switch to the first candidate cell.

[0462] As an example, the response to the first condition being satisfied within the first time interval means that when the first timer is running and the first condition is satisfied.

[0463] As an example, the second message is used to indicate that the first condition is satisfied.

[0464] As an example, the second message explicitly indicates that the first condition is satisfied.

[0465] As an example, the second message implicitly indicates that the first condition is satisfied.

[0466] As an example, the name of the second message indicates that the first condition is satisfied.

[0467] As an example, the second message includes a field, and the field indicates that the first condition is satisfied.

[0468] As an example, the field is a code point.

[0469] As an example, the field is a bit.

[0470] As an example, the value of the field is 1.

[0471] As an example, the second message is a measurement report.

[0472] As an example, the second message includes measurement results.

[0473] As an example, the second message includes at least one of the measurement results of the first candidate cell or the measurement results of the first serving cell; at least one of the measurement results of the first candidate cell or the measurement results of the first serving cell indicates that the first condition is satisfied.

[0474] As an example, the satisfaction of the first condition triggers the second message to indicate that the first condition is satisfied.

[0475] As an example, the second message includes an identifier of the first condition indicating that the first condition is satisfied.

[0476] As an example, the second message is an RRC message.

[0477] As an example, the second message is a MAC CE.

[0478] As an example, the second message is a UCI.

[0479] As an example, in response to sending the second message, switch to the first candidate cell.

[0480] As an example, the terminal U01 receives a response to the second message; in response to receiving the response to the second message, switch to the first candidate cell.

[0481] As an example, the response to the second message is an ACK.

[0482] As an example, the response to the second message is a DCI.

[0483] As an example, the response to the second message is an RRC message.

[0484] As an example, in response to receiving the first signaling, if the first signaling indicates the timing advance of the first candidate cell, start the first timing advance timer.

[0485] As an example, in response to receiving the first signaling, if the first signaling indicates the timing advance of the first candidate cell, apply the timing advance of the first candidate cell, and start the first timing advance timer.

[0486] As an example, starting the first timing advance timer includes: starting or restarting the first timing advance timer.

[0487] As an example, starting the first timing advance timer includes: if the first timing advance timer is not running, start the first timing advance timer.

[0488] As an example, starting the first timing advance timer includes: if the first timing advance timer is running, restart the first timing advance timer.

[0489] As an example, the name of the first timing advance timer includes timeAlignmentTimer.

[0490] As an example, the first timing advance timer is a timeAlignmentTimer.

[0491] As an example, the first signaling includes a Timing Advance Command field, and the Timing Advance Command field indicates the timing advance of the first candidate cell.

[0492] As an example, the first signaling includes a Timing Advance Command field, and the Timing Advance Command field is set to a value other than FFF.

[0493] As an example, the first signaling includes a Timing Advance Command field, and the Timing Advance Command field is not reserved.

[0494] As an example, the first RRC message includes an LTM-CSI-ReportConfig, and the LTM-CSI-ReportConfig indicates the second condition.

[0495] As an example, the first RRC message includes a CSI-MeasConfig, and the CSI-MeasConfig indicates the second condition.

[0496] As an example, the first RRC message includes an LTM-Candidate, and the LTM-Candidate indicates the second condition.

[0497] As an example, the first RRC message includes an LTM-Config, and the LTM-Config indicates the second condition.

[0498] As an example, the first RRC message includes an LTM-CSI-ReportConfig, and the LTM-CSI-ReportConfig indicates the second condition.

[0499] As an example, after the first measurement report is sent, the first signaling is received.

[0500] As an example, the time-frequency resources occupied by the first measurement report are specified based on event-triggered L1 measurement reports.

[0501] As an example, the time-frequency resources occupied by the first measurement report are configured by the LTM-CSI-ReportConfig.

[0502] As an example, the time-frequency resources occupied by the first measurement report are pre-configured.

[0503] As an example, the time-frequency resources occupied by the first measurement report are based on base station scheduling.

[0504] As an example, the time-frequency resources occupied by the first measurement report are based on dynamic scheduling.

[0505] As an example, the first measurement report is sent through the PUSCH (Physical uplink shared channel).

[0506] As an example, the time-frequency resources occupied by the first measurement report are scheduled by DCI (DownLink Control Information).

[0507] As an example, the time-frequency resources occupied by the first measurement report are based on CG (Configured Grant).

[0508] As an example, the first measurement report is sent through PUCCH (PUCCH Physical Uplink Control Channel).

[0509] As an example, the first measurement report is a UCI (Uplink Control Information).

[0510] As an example, the first measurement report is sent through UCI multiplexed on PUSCH.

[0511] As an example, the first measurement report is an RRC message.

[0512] As an example, the first measurement report is a MeasurementReport message.

[0513] As an example, the first measurement report is a MAC CE.

[0514] As an example, the first measurement report includes the measurement results of the first candidate cell.

[0515] As an example, the first measurement report includes the measurement results of the first serving cell.

[0516] As an example, the first measurement report includes the measurement results of the first candidate cell and the measurement results of the first serving cell.

[0517] As an example, the second condition is to trigger LTM cell handover.

[0518] As an example, the second condition is to trigger early uplink synchronization.

[0519] As an example, the second condition is Event LTM1.

[0520] As an example, the second condition is Event LTM2.

[0521] As an example, the second condition is the entry condition of Event LTM2.

[0522] As an example, the second condition is Event LTM3.

[0523] As an example, the second condition is the entry condition of Event LTM3.

[0524] As an example, the second condition is Event LTM4.

[0525] As an example, the second condition is the entry condition of Event LTM4.

[0526] As an example, the second condition is Event LTM5.

[0527] As an example, the second condition is the entry condition of Event LTM5.

[0528] As an example, the event types of the second condition and the first condition are the same.

[0529] As an example, the event types of the second condition and the first condition are different.

[0530] As an example, an evaluation for the second condition is performed; the execution of the evaluation for the second condition is independent of the first time interval.

[0531] As an example, the first time interval does not affect the evaluation for the second condition.

[0532] As an example, the second condition includes that the measurement result of the first candidate cell is better than the third threshold.

[0533] As a sub - example of the above example, the third threshold is pre - configured.

[0534] As a sub - example of the above example, the third threshold is configurable.

[0535] As a sub - example of the above example, the third threshold and the first threshold are configured by the same signaling.

[0536] As a sub - example of the above example, the third threshold and the first threshold are respectively configured by two different signalings.

[0537] As a sub - example of the above example, the third threshold is the measurement result of the first serving cell.

[0538] As an example, the second condition includes that the measurement result of the first serving cell is worse than the fourth threshold.

[0539] As a sub - example of the above example, the fourth threshold is pre - configured.

[0540] As a sub - example of the above example, the fourth threshold is configurable.

[0541] As a sub - example of the above example, the fourth threshold and the second threshold are configured by the same signaling.

[0542] As a sub - example of the above example, the fourth threshold and the second threshold are respectively configured by two different signalings.

[0543] As an example, the second condition includes that the measurement result of the first candidate cell is better than the third threshold, and the measurement result of the first serving cell is worse than the fourth threshold.

[0544] As a sub - example of the above example, the third threshold and the fourth threshold are pre - configured.

[0545] As a sub - example of the above example, the third threshold and the fourth threshold are configurable.

[0546] As an example, starting the first time interval depends on the reception of the first signaling.

[0547] As an example, when the first signaling is received, the first time interval starts.

[0548] As an example, starting the first time interval depends on the reception of the first signaling and the first condition is not satisfied.

[0549] As an example, when the first signaling is received, if the first condition is not satisfied, the first time interval starts.

[0550] As an example, starting the first time interval depends on the reception of the first signaling and the first condition is not satisfied.

[0551] As an example, when the first signaling is received, if the first condition is configured and the first condition is not satisfied, the first time interval starts.

[0552] As an example, in response to the reception of the first signaling, an indication is sent to a higher layer; in response to the reception of the indication at the RRC sub - layer, the first time interval starts.

[0553] As an example, accompanying the satisfaction of the first condition within the first time interval, the first time interval is stopped.

[0554] As an example, accompanying the satisfaction of the first condition within the first time interval, the evaluation for the first condition is stopped.

[0555] As an example, accompanying the satisfaction of the first condition within the first time interval, the evaluation for the second condition is stopped.

[0556] As an example, a reset MAC entity is used to trigger the stop of the first time interval.

[0557] As an example, performing a cell handover is used to trigger the stop of the first time interval.

[0558] As an example, the reconfiguration of the first condition is used to trigger the stop of the first time interval.

[0559] As an example, the release of the first candidate cell is used to trigger the stop of the first time interval.

[0560] As an example, accompanying the satisfaction of the first condition within the first time interval includes: when switching to the first candidate cell.

[0561] As an example, accompanying the satisfaction of the first condition within the first time interval includes: when being instructed to switch to the first candidate cell at a higher layer.

[0562] As an example, accompanying the satisfaction of the first condition within the first time interval includes: when receiving an indication that a lower layer LTM cell handover process is triggered.

[0563] As an example, accompanying the satisfaction of the first condition within the first time interval includes: when resetting the MAC entity.

[0564] As an example, when the first signaling is received, if the first condition is not satisfied, the first time interval is started; and, when the first signaling is received, if the first condition is not satisfied, the evaluation for the first condition is performed, and / or, the first timing advance timer is started, and / or, the first message is sent.

[0565] As an example, when the first signaling is received, regardless of whether the first condition is satisfied, the first time interval is started.

[0566] As an example, when the first signaling is received, if the first condition is not satisfied, start the first time interval.

[0567] As an example, when the first signaling is received, if the first condition is not satisfied, perform an evaluation for the first condition, and / or, start a first timing advance timer, and / or, send a first message.

[0568] As an example, when the first signaling is received, if the first condition is not satisfied, start to perform an evaluation for the first condition.

[0569] As an example, when the first signaling is received, if the first condition is not satisfied, send a first message.

[0570] As an example, when the first signaling is received, if the first condition is not satisfied, start a first timing advance timer.

[0571] As an example, when the first signaling is received, if the first condition is not satisfied, start to perform an evaluation for the first condition and send a first message.

[0572] As an example, when the first signaling is received, if the first condition is not satisfied, start to perform an evaluation for the first condition and start a first timing advance timer and send a first message.

[0573] As an example, when the first signaling is received, if the first condition is not satisfied, start the first time interval.

[0574] As an example, the handover to the first candidate cell includes: receiving downlink signaling or sending uplink signaling on the first candidate cell.

[0575] As an example, the downlink signaling is a PDCCH with a CRC scrambled by a C-RNTI of the terminal U01 in the first candidate cell.

[0576] As an example, the downlink signaling is a PDCCH scheduling a new transmission on the first candidate cell.

[0577] As an example, the uplink signaling is a Preamble.

[0578] As an example, the uplink signaling is a PUSCH transmission.

[0579] As an example, the uplink signaling is an RRCReconfigurationComplete message.

[0580] Example 6

[0581] Embodiment 6 exemplifies a schematic diagram of the relationship between the first signaling and the handover to the first candidate cell according to an embodiment of the present application. In the accompanying Figure 6 figure, the horizontal axis represents time; the time interval between time t1 and time t3 is the first time interval; at time t2, the first condition is satisfied, and the time t2 belongs to the first time interval.

[0582] In Embodiment 6, the handover to the first candidate cell depends on the first condition being satisfied within the first time interval; the start time of the first time interval depends on the first signaling.

[0583] As an embodiment, time t1 is earlier than time t2.

[0584] As an embodiment, time t2 is time t3.

[0585] As an embodiment, time t2 is earlier than time t3.

[0586] As an embodiment, the accompanying Figure 6 figure does not limit whether time t2 and time t3 are the same.

[0587] Example 7

[0588] Embodiment 7 exemplifies a schematic diagram of performing an evaluation for a second condition according to an embodiment of the present application. As shown in the accompanying Figure 7 figure.

[0589] In Embodiment 7, an evaluation for the second condition is performed; wherein, when at least one of the measurement result of the first candidate cell being better than the third threshold or the measurement result of the first serving cell being worse than the fourth threshold is satisfied, the second condition is satisfied; wherein, the execution of the evaluation for the second condition depends on the first time interval.

[0590] As an embodiment, when at least the measurement result of the first candidate cell is better than the third threshold, the first condition is satisfied.

[0591] As an embodiment, when at least the measurement result of the first serving cell is worse than the fourth threshold, the first condition is satisfied.

[0592] As an embodiment, when at least the measurement result of the first candidate cell is better than the third threshold and the measurement result of the first serving cell is worse than the second threshold, the first condition is satisfied.

[0593] As an example, when the measurement result of the first candidate cell is better than the third threshold, the first condition is satisfied.

[0594] As an example, when the measurement result of the first serving cell is worse than the fourth threshold, the first condition is satisfied.

[0595] As an example, when the measurement result of the first candidate cell is better than the third threshold and the measurement result of the first serving cell is worse than the fourth threshold, the first condition is satisfied.

[0596] As an example, when the measurement result of the first candidate cell is better than the third threshold for more than a first target time, the first condition is satisfied.

[0597] As an example, when the measurement result of the first candidate cell is better than the third threshold for more than a first target time, the first condition is satisfied.

[0598] As an example, when the measurement result of the first candidate cell is better than the third threshold and the measurement result of the first serving cell is worse than the fourth threshold for more than a first target time, the first condition is satisfied.

[0599] As an example, the first target time is a TTT (Time-to-Trigger).

[0600] As an example, the first target time is pre-configured.

[0601] As an example, the first target time is at least one time slot.

[0602] As an example, the first target time is at least one millisecond.

[0603] As an example, performing the evaluation for the second condition means evaluating whether the second condition is satisfied.

[0604] As an example, the evaluation includes determination.

[0605] As an example, the evaluation includes measurement.

[0606] As an example, the evaluation includes comparison.

[0607] As an example, the evaluation includes prediction.

[0608] As an example, the evaluation for the first condition is performed by measurement.

[0609] As an example, the evaluation for the first condition is performed by comparison.

[0610] As an example, the evaluation for the first condition is performed by prediction.

[0611] As an example, that the evaluation for the second condition depends on the first time interval means that the evaluation for the second condition is performed only outside the first time interval.

[0612] As an example, the first time interval is a timer.

[0613] As an example, that the evaluation for the second condition depends on the first time interval means that the evaluation for the second condition is performed only when a timer is not running; wherein, the first time interval is the time when the timer is running.

[0614] As an example, the first time interval is a time window.

[0615] As an example, that the evaluation for the second condition depends on the first time interval means that the evaluation for the second condition is performed only when a time window is not running; wherein, the first time interval is the time when the time window is running.

[0616] Example 8

[0617] Embodiment 8 exemplifies a schematic diagram of performing an evaluation for a first condition according to an embodiment of the present application. As shown in the appendix Figure 8 as follows.

[0618] In Embodiment 8, an evaluation for the first condition is performed; wherein, the first condition is satisfied when at least one of the following two conditions is met: the measurement result of at least the first candidate cell is better than the first threshold or the measurement result of the first serving cell is worse than the second threshold; wherein, the evaluation for the first condition depends on the first time interval.

[0619] As an example, the first condition is satisfied when the measurement result of at least the first candidate cell is better than the first threshold.

[0620] As an example, the first condition is satisfied when the measurement result of at least the first serving cell is worse than the second threshold.

[0621] As an example, when the measurement result of at least the first candidate cell is better than the first threshold and the measurement result of the first serving cell is worse than the second threshold, the first condition is satisfied.

[0622] As an example, when the measurement result of the first candidate cell is better than the first threshold, the first condition is satisfied.

[0623] As an example, when the measurement result of the first serving cell is worse than the second threshold, the first condition is satisfied.

[0624] As an example, when the measurement result of the first candidate cell is better than the first threshold and the measurement result of the first serving cell is worse than the second threshold, the first condition is satisfied.

[0625] As an example, when the measurement result of the first candidate cell is better than the first threshold for more than a second target time, the first condition is satisfied.

[0626] As an example, when the measurement result of the first serving cell is worse than the second threshold for more than a second target time, the first condition is satisfied.

[0627] As an example, when the measurement result of the first candidate cell is better than the first threshold and the measurement result of the first serving cell is worse than the second threshold for more than a second target time, the first condition is satisfied.

[0628] As an example, the second target time is a TTT.

[0629] As an example, the second target time is pre-configured.

[0630] As an example, the second target time is at least one time slot.

[0631] As an example, the second target time is at least one millisecond.

[0632] As an example, the execution of the evaluation for the first condition means: evaluating whether the first condition is satisfied.

[0633] As an example, the evaluation includes determination.

[0634] As an example, the evaluation includes measurement.

[0635] As an example, the evaluation includes comparison.

[0636] As an example, the evaluation includes prediction.

[0637] As an example, the evaluation for the first condition is performed by measurement.

[0638] As an example, the evaluation for the first condition is performed by comparison.

[0639] As an example, the evaluation for the first condition is performed by prediction.

[0640] As an example, the evaluation for the first condition depends on the first time interval, which means that the evaluation for the first condition is only performed within the first time interval.

[0641] As an example, the first time interval is a timer.

[0642] As an example, the evaluation for the first condition depends on the first time interval, which means that the evaluation for the first condition is only performed when a timer is running; where the first time interval is the time when the timer is running.

[0643] As an example, the first time interval is a time window.

[0644] As an example, the evaluation for the first condition depends on the first time interval, which means that the evaluation for the first condition is only performed when a time window is running; where the first time interval is the time when the time window is running.

[0645] Example 9

[0646] Example 9 exemplifies a schematic diagram of the time for performing the evaluation for the second condition and the first condition according to an embodiment of the present application. The horizontal axis represents time, and the second time interval is a time interval before the first time interval. As shown in the appendix Figure 9 as shown.

[0647] In Example 9, within the second time interval, the evaluation for the second condition is performed; within the first time interval, the evaluation for the first condition is performed.

[0648] As an example, the second time interval is after the first RRC message is received.

[0649] As an example, the second time interval is after a DCI is received.

[0650] As an example, the DCI indicates the activation of the second condition.

[0651] As an example, the second time interval is after a MAC CE is received.

[0652] As an example, the MAC CE indicates activation of the second condition.

[0653] As an example, the second time interval and the first time interval are consecutive.

[0654] As an example, the second time interval and the first time interval are not consecutive.

[0655] As an example, within the period of time before the first time interval, the evaluation for the first condition is not performed.

[0656] As an example, along with the start time of the first time interval, the evaluation for the second condition is stopped and the evaluation for the first condition is started.

[0657] As an example, along with the start time of the first time interval, the evaluation for the first condition is started and the evaluation for the second condition is continued.

[0658] Example 10

[0659] Example 10 illustrates a structural block diagram of a processing device in a terminal according to an embodiment of the present application; as shown in the attached Figure 10 shown. In the attached Figure 10 In the figure, the processing device 1000 in the terminal includes a first receiver 1001 and a first transmitter 1002.

[0660] The first receiver 1001 receives a first RRC message; wherein, the first RRC message includes configuration information of a first candidate cell, and the first RRC message includes a first condition;

[0661] The first receiver 1001 receives a first signaling; wherein, the first signaling is a signaling of a protocol layer below the RRC sublayer, and the first signaling indicates a handover to the first candidate cell;

[0662] At least one of the first receiver 1001 or the first transmitter 1102 switches to the first candidate cell along with the first signaling;

[0663] In Embodiment 10, the handover to the first candidate cell depends on the first condition being satisfied within a first time interval; the start time of the first time interval depends on the first signaling; the first condition includes at least one of the measurement result of the first candidate cell being better than a first threshold or the measurement result of the first serving cell being worse than a second threshold.

[0664] As an embodiment, after receiving the first signaling, the first transmitter 1002 sends a first message; wherein, the first message indicates that the first condition is not satisfied when the first signaling is received.

[0665] As an embodiment, in response to the first condition being satisfied within the first time interval, the first transmitter 1002 sends a second message; wherein, the second message indicates that the first condition is satisfied.

[0666] As an embodiment, at least one of the first receiver 1001 or the first transmitter 1102 starts a first timing advance timer in response to receiving the first signaling; wherein, the first signaling indicates the timing advance of the first candidate cell.

[0667] As an embodiment, in response to a second condition being satisfied, the first transmitter 1002 sends a first measurement report; wherein, the first RRC message includes the second condition; the second condition includes at least one of the measurement result of the first candidate cell being better than a third threshold or the measurement result of the first serving cell being worse than a fourth threshold.

[0668] As an embodiment, the first receiver 1001 performs an evaluation of the second condition; wherein, the second condition is satisfied when at least one of the measurement result of the first candidate cell being better than the third threshold or the measurement result of the first serving cell being worse than the fourth threshold is satisfied; wherein, the performance of the evaluation of the second condition depends on the first time interval.

[0669] As an embodiment, the first receiver 1001 performs an evaluation of the first condition; wherein, the first condition is satisfied when at least one of the measurement result of the first candidate cell being better than the first threshold or the measurement result of the first serving cell being worse than the second threshold is satisfied; wherein, the performance of the evaluation of the first condition depends on the first time interval.

[0670] As an example, at least one of the first receiver 1001 or the first transmitter 1002 starts the first time interval; wherein starting the first time interval depends on receiving at least the first signaling.

[0671] As an example, the first receiver 1001 includes at least one of the antenna 452, the receiver 454, the multi-antenna receiving processor 458, the receiving processor 456, the controller / processor 459, the memory 460, or the data source 467 attached in this application. Figure 4

[0672] As an example, the first receiver 1001 includes at least the antenna 452 and the receiver 454 attached in this application. Figure 4

[0673] As an example, the first transmitter 1002 includes at least one of the antenna 452, the transmitter 454, the multi-antenna transmitting processor 457, the transmitting processor 468, the controller / processor 459, the memory 460, or the data source 467 attached in this application. Figure 4

[0674] As an example, the first transmitter 1002 includes at least the antenna 452 and the transmitter 454 attached in this application. Figure 4

[0675] As an example, the terminal includes one or more processors and a memory; the memory is coupled to the one or more processors, the memory is used to store computer program code, the computer program code includes computer instructions, and the one or more processors call the computer instructions to cause the terminal to execute the method used in the terminal in this application.

[0676] Example 11

[0677] Embodiment 11 exemplifies a structural block diagram of a processing device for a base station according to an embodiment of this application; as shown in the appendix. Figure 11 In the appendix, the processing device 1100 in the base station includes a second transmitter 1101 and a second receiver 1102. Figure 11

[0678] The second transmitter 1101 sends a first RRC message; wherein the first RRC message includes configuration information of a first candidate cell, and the first RRC message includes a first condition.

[0679] The second transmitter 1101 sends a first signaling; wherein, the first signaling is a signaling of a protocol layer below the RRC sublayer, and the first signaling indicates a handover to the first candidate cell; along with the first signaling, the receiver of the first signaling switches to the first candidate cell.

[0680] In Embodiment 11, the handover to the first candidate cell depends on the first condition being satisfied within a first time interval; the start time of the first time interval depends on the first signaling; the first condition includes at least one of the measurement result of the first candidate cell being better than a first threshold or the measurement result of the first serving cell being worse than a second threshold.

[0681] As an embodiment, the second receiver 1102 receives a first message after the first signaling is sent; wherein, the first message indicates that the first condition is not satisfied when the first signaling is received.

[0682] As an embodiment, the second receiver 1102 receives a second message; wherein, in response to the first condition being satisfied within the first time interval, the receiver of the first signaling sends the second message; wherein, the second message indicates that the first condition is satisfied.

[0683] As an embodiment, in response to receiving the first signaling, the receiver of the first signaling starts a first timer; wherein, the first signaling indicates the timing advance of the first candidate cell.

[0684] As an embodiment, the second receiver 1102 receives a first measurement report; wherein, in response to a second condition being satisfied, the receiver of the first signaling sends the first measurement report; wherein, the first RRC message includes the second condition; the second condition includes at least one of the measurement result of the first candidate cell being better than a third threshold or the measurement result of the first serving cell being worse than a fourth threshold.

[0685] As an embodiment, the receiver of the first signaling performs an evaluation of the second condition; wherein, when at least one of the measurement result of the first candidate cell being better than the third threshold or the measurement result of the first serving cell being worse than the fourth threshold is satisfied, the second condition is satisfied; wherein, the execution of the evaluation of the second condition depends on the first time interval.

[0686] As an example, a receiver of the first signaling performs an evaluation for the first condition; wherein the first condition is satisfied when at least one of the following two conditions is met: the measurement result of at least the first candidate cell is better than the first threshold or the measurement result of the first serving cell is worse than the second threshold; wherein the execution of the evaluation for the first condition depends on the first time interval.

[0687] As an example, a receiver of the first signaling starts the first time interval; wherein the start of the first time interval depends on at least the reception of the first signaling.

[0688] As an example, the second transmitter 1101 includes at least one of the antenna 420, the transmitter 418, the multi-antenna transmission processor 471, the transmission processor 416, the controller / processor 475, or the memory 476 attached in the present application. Figure 4

[0689] As an example, the second transmitter 1101 includes at least the antenna 420 and the transmitter 418 attached in the present application. Figure 4

[0690] As an example, the second receiver 1102 includes at least one of the antenna 420, the receiver 418, the multi-antenna reception processor 472, the reception processor 470, the controller / processor 475, or the memory 476 attached in the present application. Figure 4

[0691] As an example, the second receiver 1102 includes at least the antenna 420 and the receiver 418 attached in the present application. Figure 4

[0692] As an example, the base station includes: one or more processors and a memory; the memory is coupled to the one or more processors, the memory is used to store computer program code, the computer program code includes computer instructions, and the one or more processors call the computer instructions to cause the base station to execute the method used in the base station in the present application.

[0693] Those of ordinary skill in the art can understand that all or part of the steps in the above methods can be completed by instructing relevant hardware through a program, and the program can be stored in a computer-readable storage medium, such as a read-only memory, a hard disk, or an optical disc, etc. Optionally, all or part of the steps in the above embodiments can also be implemented using one or more integrated circuits. Correspondingly, each module unit in the above embodiments can be implemented in a hardware form or in the form of a software function module. This application is not limited to any specific form of the combination of software and hardware. The user equipment, terminal, and UE in this application include, but are not limited to, drones, communication modules on drones, remote control aircraft, aircraft, small aircraft, mobile phones, tablet computers, laptops, in-vehicle communication devices, wireless sensors, network cards, Internet of Things terminals, RFID terminals, NB-IOT terminals, MTC (Machine Type Communication) terminals, eMTC (enhanced MTC) terminals, data cards, network cards, in-vehicle communication devices, low-cost mobile phones, low-cost tablet computers, and other wireless communication devices. The base station or system equipment in this application includes, but is not limited to, macrocell base stations, microcell base stations, home base stations, relay base stations, gNB (NR Node B) NR Node B, TRP (Transmitter Receiver Point), and other wireless communication devices.

[0694] The above is only a preferred embodiment of the present application and is not intended to limit the protection scope of the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A method used in a terminal, characterized in that: include: receiving a first RRC message; wherein the first RRC message includes configuration information of a first candidate cell, and the first RRC message includes a first condition; Receiving a first signaling; wherein the first signaling is a signaling of a protocol layer below the RRC sublayer, and the first signaling indicates switching to the first candidate cell; Along with the first signaling, switching to the first candidate cell; Among them, the switching to the first candidate cell depends on the first condition being satisfied within a first time interval; the start time of the first time interval depends on the first signaling; the first condition includes at least one of the measurement result of the first candidate cell being better than a first threshold or the measurement result of the first service cell being worse than a second threshold.

2. The method according to claim 1, characterized in that The method comprises: After the first signaling is received, sending a first message; The first message indicates that the first condition is not met when the first signaling is received.

3. The method according to claim 1 or 2, characterized in that: The method comprises: In response to the first condition being satisfied within the first time interval, sending a second message; The second message indicates that the first condition is met.

4. The method according to any one of claims 1 to 3, characterized in that The method comprises: In response to receiving the first signaling, starting a first timing advance timer; The first signaling indicates the timing advance of the first candidate cell.

5. The method according to any one of claims 1 to 4, characterized in that The method comprises: In response to the second condition being met, sending a first measurement report; The first RRC message includes the second condition; the second condition includes at least one of a measurement result of the first candidate cell being better than a third threshold or a measurement result of the first serving cell being worse than a fourth threshold.

6. The method according to claim 5, characterized in that The method comprises: performing an evaluation for the second condition; wherein, when at least one of the measurement result of the first candidate cell is better than the third threshold or the measurement result of the first serving cell is worse than the fourth threshold is met, the second condition is met; The performing of the evaluation of the second condition depends on the first time interval.

7. The method according to any one of claims 1 to 6, characterized in that The method comprises: Performing an evaluation for the first condition; wherein the first condition is satisfied when at least one of the measurement result of the first candidate cell is better than the first threshold or the measurement result of the first serving cell is worse than the second threshold is satisfied; The performing of the evaluation of the first condition depends on the first time interval.

8. The method according to any one of claims 1 to 7, characterized in that The method comprises: starting the first time interval; The starting of the first time interval depends on at least the first signaling being received.

9. A terminal, characterized in that: The terminal includes: one or more processors and a memory; The memory is coupled to the one or more processors, and the memory is used to store computer program codes, where the computer program codes include computer instructions. The one or more processors call the computer instructions to enable the terminal to execute the method according to any one of claims 1 to 8.

10. A method used in a base station, characterized in that: include: Sending a first RRC message; wherein the first RRC message includes configuration information of the first candidate cell, and the first RRC message includes a first condition; Sending a first signaling; wherein the first signaling is a signaling of a protocol layer below the RRC sublayer, and the first signaling indicates switching to the first candidate cell; Along with the first signaling, a receiver of the first signaling switches to the first candidate cell; Among them, the switching to the first candidate cell depends on the first condition being satisfied within a first time interval; the start time of the first time interval depends on the first signaling; the first condition includes at least one of the measurement result of the first candidate cell being better than a first threshold or the measurement result of the first service cell being worse than a second threshold.

11. The method according to claim 10, characterized in that The method comprises: After the first signaling is sent, receiving a first message; The first message indicates that the first condition is not met when the first signaling is received.

12. The method according to claim 10 or 11, characterized in that: The method comprises: receiving a second message; wherein, in response to the first condition being satisfied within the first time interval, the receiver of the first signaling sends the second message; The second message indicates that the first condition is met.

13. The method according to any one of claims 10 to 12, characterized in that: In response to the first signaling being received, the receiver of the first signaling starts a first timer; wherein the first signaling indicates a timing advance of the first candidate cell.

14. The method according to any one of claims 10 to 13, characterized in that: The method comprises: Receiving a first measurement report; wherein, in response to the second condition being met, the recipient of the first signaling sends the first measurement report; The first RRC message includes the second condition; the second condition includes at least one of a measurement result of the first candidate cell being better than a third threshold or a measurement result of the first serving cell being worse than a fourth threshold.

15. The method according to claim 14, characterized in that The receiver of the first signaling performs an evaluation for the second condition; wherein, when at least one of the measurement result of the first candidate cell is better than the third threshold or the measurement result of the first serving cell is worse than the fourth threshold, the second condition is met; wherein, the execution of the evaluation for the second condition depends on the first time interval.

16. The method according to any one of claims 10 to 15, characterized in that The receiver of the first signaling performs an evaluation for the first condition; wherein, the first condition is met when at least one of the measurement result of at least the first candidate cell is better than the first threshold or the measurement result of the first serving cell is worse than the second threshold; wherein the performance of the evaluation for the first condition depends on the first time interval.

17. The method according to any one of claims 10 to 16, characterized in that A receiver of the first signaling starts the first time interval; wherein, the starting of the first time interval depends on at least the first signaling being received.

18. A base station, characterized in that: The base station includes: one or more processors and a memory; The memory is coupled to the one or more processors, and the memory is used to store computer program codes, where the computer program codes include computer instructions, and the one or more processors call the computer instructions to enable the base station to perform the method according to any one of claims 10 to 17.

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