Early synchronization method and apparatus, and storage medium

Abstract

The present disclosure relates to an early synchronization method. When a first condition is met, early synchronization and / or TCI state activation or deactivation are / is performed on a candidate cell for conditional mobility configuration, thereby ensuring the accuracy of a terminal performing early synchronization and / or TCI state activation or deactivation on the candidate cell, and thus ensuring communication reliability.

Description

Early synchronization methods, devices, and storage media Technical Field

[0001] This disclosure relates to the field of communication technology, and in particular to advance synchronization methods, apparatus, and storage media. Background Technology

[0002] With the rapid development of mobile communication technology, when multiple mobility candidate cells meet the mobility execution conditions, a terminal can select one candidate cell to perform mobility. Currently, it is necessary to perform early uplink or downlink synchronization (early UL or DL ​​synchronization) on candidate cells for condition-triggered mobility, and to support RACH-less (Random Access Channel) procedures during mobility execution. Therefore, activating or deactivating the uplink synchronization and / or TCI (Transmission Configuration Indicator) states of cells is a problem that urgently needs to be solved.

[0003] Summary of the Invention

[0004] This disclosure addresses the issue of under what circumstances to perform advance synchronization and / or TCI state activation or deactivation. By performing advance synchronization and / or TCI state activation or deactivation on candidate cells of condition-based mobility configuration when a first condition is met, this disclosure ensures the accuracy of the terminal's performance of advance synchronization and / or TCI state activation or deactivation on candidate cells, thereby ensuring communication reliability.

[0005] This disclosure provides methods, apparatus, and storage media for advance synchronization.

[0006] According to a first aspect of the embodiments of this disclosure, an advance synchronization method is proposed, the method comprising:

[0007] Once the first condition is met, the terminal performs advance synchronization and / or TCI state activation or deactivation on the candidate cells of the condition-based mobility configuration.

[0008] According to a second aspect of the embodiments of this disclosure, an advance synchronization method is proposed, the method comprising:

[0009] Send a first configuration, which is used to configure a first condition, which is used to perform early synchronization and / or TCI state activation or deactivation on candidate cells of condition-based mobility configuration when the terminal meets the condition.

[0010] According to a third aspect of the embodiments of this disclosure, an advance synchronization method is proposed, the method comprising:

[0011] The network device sends a first configuration, which is used to configure a first condition, which is used to perform early synchronization and / or TCI state activation or deactivation on candidate cells of condition-based mobility configuration when the terminal meets the condition.

[0012] Once the terminal determines that the first condition is met, the terminal performs advance synchronization and / or TCI state activation or deactivation on the candidate cells of the condition-based mobility configuration.

[0013] According to a fourth aspect of the embodiments of this disclosure, an advance synchronization device is provided, comprising:

[0014] The processing module is used to determine that a first condition is met, and the terminal performs advance synchronization and / or TCI state activation or deactivation on candidate cells for condition-based mobility configuration.

[0015] According to a fifth aspect of the embodiments of this disclosure, an advance synchronization device is provided, comprising:

[0016] The transceiver module is configured to send a first configuration, which configures a first condition, which, when the terminal satisfies the condition, enables the early synchronization and / or TCI state activation or deactivation of candidate cells based on the conditional mobility configuration.

[0017] According to a sixth aspect of the embodiments of this disclosure, a terminal is provided, comprising:

[0018] One or more processors;

[0019] The terminal is used to execute any of the methods described in the first aspect.

[0020] According to a seventh aspect of the present disclosure, a network device is provided, comprising:

[0021] One or more processors;

[0022] The network device is used to perform any of the methods described in the second aspect.

[0023] According to an eighth aspect of the embodiments of this disclosure, a communication system is provided, comprising:

[0024] A terminal and a network device, wherein the terminal is configured to implement the advance synchronization method described in the first aspect, and the network device is configured to implement the advance synchronization method described in the second aspect.

[0025] According to a ninth aspect of the present disclosure, a storage medium is provided that stores instructions which, when executed on a communication device, cause the communication device to perform the method as described in any one of the first or second aspects.

[0026] According to a tenth aspect of the present disclosure, a computer program product is provided that, when run on a communication device, causes the communication device to perform a feature indication method as described in any one of the first or second aspects. Attached Figure Description

[0027] The accompanying drawings, which are included to provide a further understanding of the embodiments of this disclosure and form part of this disclosure, illustrate exemplary embodiments of this disclosure and, together with their descriptions, serve to explain the embodiments of this disclosure and do not constitute an improper limitation of the embodiments of this disclosure. In the drawings:

[0028] Figure 1 is a schematic diagram of a communication system architecture provided in an embodiment of this disclosure;

[0029] Figure 2A is an interactive schematic diagram of an advance synchronization method provided in an embodiment of this disclosure;

[0030] Figure 2B is an interactive schematic diagram of an advance synchronization method provided in an embodiment of this disclosure;

[0031] Figure 3A is a flowchart of an advance synchronization method provided in an embodiment of this disclosure;

[0032] Figure 3B is a flowchart of an advance synchronization method provided in an embodiment of this disclosure;

[0033] Figure 4A is a flowchart of an advance synchronization method provided in an embodiment of this disclosure;

[0034] Figure 4B is a flowchart of an advance synchronization method provided in an embodiment of this disclosure;

[0035] Figure 5 is an interactive schematic diagram of an advance synchronization method according to an embodiment of this disclosure;

[0036] Figure 6 is an interactive schematic diagram of an advance synchronization method according to an embodiment of this disclosure;

[0037] Figure 7A is a schematic diagram of the structure of a terminal according to an embodiment of the present disclosure;

[0038] Figure 7B is a schematic diagram of the structure of a network device according to an embodiment of the present disclosure;

[0039] Figure 8A is a schematic diagram of a communication device according to an embodiment of the present disclosure;

[0040] Figure 8B is a schematic diagram of a communication device according to an embodiment of the present disclosure. Detailed Implementation

[0041] This disclosure provides a method for advance synchronization, a terminal, and a storage medium.

[0042] In a first aspect, embodiments of this disclosure provide an advance synchronization method, the method being executed by a terminal, the method comprising:

[0043] Once the first condition is met, the terminal performs advance synchronization and / or TCI state activation or deactivation on the candidate cells of the condition-based mobility configuration.

[0044] In the above embodiments, the problem of under what circumstances to perform advance synchronization and / or TCI state activation or deactivation is solved. This disclosure ensures the accuracy of the terminal performing advance synchronization and / or TCI state activation or deactivation on candidate cells based on conditional mobility configuration by performing advance synchronization and / or TCI state activation or deactivation on candidate cells when a first condition is met, thereby ensuring communication reliability.

[0045] In conjunction with some embodiments of the first aspect, in some embodiments, determining that the first condition is met, and the terminal performs early synchronization and / or TCI state activation or deactivation on candidate cells for conditional mobility configuration, includes:

[0046] Once the first condition is met, a first request message is sent to the network device. The first request message is used to request the network device to trigger the terminal to perform early synchronization and / or TCI state activation or deactivation on the candidate cells of the condition-based mobility configuration.

[0047] In the above embodiments, the terminal ensures the accuracy of performing advance synchronization and / or TCI state activation or deactivation by sending a request to the network device to request the early synchronization and / or TCI state activation or deactivation of candidate cells for conditional mobility configuration.

[0048] In conjunction with some embodiments of the first aspect, in some embodiments, the first request information includes at least one of the following:

[0049] Instruction information, the instruction information being used to instruct the terminal to perform operations on candidate cells based on conditional mobility configuration;

[0050] Candidate cell identifier, which is used to indicate the candidate cell;

[0051] Candidate configuration identifier, which is used to indicate the configuration of the candidate cell;

[0052] At least one beam information, the beam information being used to indicate the beam of the candidate cell;

[0053] At least one TCI status information, the TCI status information being used to indicate the TCI status of the candidate cell;

[0054] Cell-level measurement results, which are used to indicate the measurement results of the candidate cells;

[0055] At least one beam-level measurement result, which is used to indicate the measurement result of at least one beam of the candidate cell.

[0056] In the above embodiments, the types of information carried by the first request information are expanded to ensure the comprehensiveness of the information carried by the first request information, thereby ensuring the reliability of the terminal's request to perform advance synchronization and / or TCI state activation or deactivation on the candidate cells of the conditional mobility configuration.

[0057] In conjunction with some embodiments of the first aspect, in some embodiments, the first condition is associated with one or more of the following:

[0058] Measurement results of the terminal's serving cell;

[0059] Measurement results of candidate cells for the terminal;

[0060] Measuring events;

[0061] Execution conditions for conditional mobility configuration.

[0062] In conjunction with some embodiments of the first aspect, in some embodiments, the first condition includes at least one of the following:

[0063] The measurement result of the serving cell of the terminal is less than the first threshold and the measurement result of the candidate cell is greater than the second threshold;

[0064] The measurement result of the serving cell's beam is less than the third threshold and the measurement result of the terminal's candidate cell's beam is greater than the fourth threshold.

[0065] The beam measurement result of the candidate cell is greater than the fourth threshold value;

[0066] The measurement result of the candidate cell is greater than the second threshold value;

[0067] The measurement result of the serving cell is less than the first threshold value;

[0068] The measurement result of the beam of the serving cell is less than the third threshold value.

[0069] In the above embodiments, the possible implementations of the first condition are expanded to ensure the comprehensiveness of the first condition and the reliability of the second cell selected by the terminal based on the first condition.

[0070] In conjunction with some embodiments of the first aspect, in some embodiments, the method further includes:

[0071] Receive a first configuration sent by a network device, the first configuration being used to configure the first condition.

[0072] In conjunction with some embodiments of the first aspect, in some embodiments, the first configuration includes at least one of the following:

[0073] A configuration identifier, which is used to indicate the first configuration;

[0074] The first threshold value of the measurement results for the service area;

[0075] The second threshold value for candidate cell measurement results;

[0076] The third threshold value of the measurement results of the serving cell's beam;

[0077] The fourth threshold value of the beam measurement results for the candidate cell;

[0078] Hysteresis value;

[0079] Trigger time;

[0080] Number of triggers.

[0081] In the above embodiments, the network device configures a first condition for the terminal to ensure the accuracy of the configured first condition, thereby ensuring the accuracy of determining the candidate cells for condition-based mobility configuration to perform advance synchronization and / or TCI state activation or deactivation based on the first condition.

[0082] In conjunction with some embodiments of the first aspect, in some embodiments, the first condition corresponds to a measurement event.

[0083] In conjunction with some embodiments of the first aspect, in some embodiments, the measurement events include measurement reporting events and / or mobility events.

[0084] In the above embodiments, by associating the measurement event with the first condition, the first condition can be used as a condition, which improves the flexibility of the first condition and ensures the accuracy of determining the early synchronization and / or TCI state activation or deactivation of candidate cells for condition-based mobility configuration based on the first condition.

[0085] In conjunction with some embodiments of the first aspect, in some embodiments, the measurement event includes at least one of the following:

[0086] L3 (Layer 3) event;

[0087] RRM (Radio Resource Management) events;

[0088] L1 (Layer 1) event;

[0089] LTM (L1 / L2 Triggered Mobility) events;

[0090] CSI (Channel State Information) measurement events;

[0091] CSI reported the incident;

[0092] LTM's CSI event.

[0093] In the above embodiments, the types of measurement times are expanded to ensure the comprehensiveness of measurement events, thereby ensuring the reliability of determining the early synchronization and / or TCI state activation or deactivation of candidate cells for condition-based mobility configuration based on the first condition after determining the first condition based on the measurement events.

[0094] In conjunction with some embodiments of the first aspect, in some embodiments, the first condition includes at least one of the following:

[0095] The execution conditions for condition-based mobility configuration must be met;

[0096] At least one event that satisfies the execution conditions associated with the condition-based mobility configuration;

[0097] An entry condition that satisfies the execution conditions associated with at least one event of the condition-based mobility configuration.

[0098] In the above embodiments, the first condition is determined by the execution conditions of mobility configuration or the entry conditions of at least one associated event or the associated entry conditions of at least one event, thereby ensuring the accuracy of determining the early synchronization and / or TCI state activation or deactivation of candidate cells based on the condition-based mobility configuration after determining the first condition based on the first condition.

[0099] In conjunction with some embodiments of the first aspect, in some embodiments, the method further includes:

[0100] The terminal meets the execution conditions for conditional mobility configuration, thus delaying the mobility execution process.

[0101] In conjunction with some embodiments of the first aspect, in some embodiments, the terminal postpones the mobility execution process if a second condition is met; the second condition includes at least one of the following:

[0102] The measurement result of the service cell is greater than the fifth threshold value;

[0103] The events associated with the execution conditions of candidate cells that meet the execution conditions are preset events;

[0104] The terminal failed to perform advance synchronization and / or TCI status activation or deactivation for candidate cells that met the execution conditions;

[0105] The terminal has performed advance synchronization and / or TCI status activation or deactivation on candidate cells that meet the execution conditions, but the information obtained is invalid.

[0106] The terminal did not obtain a valid TA value for a candidate cell that met the execution conditions;

[0107] The terminal has not activated the TCI state or beam of at least one candidate cell that meets the execution conditions.

[0108] In the above embodiments, the mobility execution process is postponed under certain conditions to ensure normal communication and thus ensure communication reliability.

[0109] In conjunction with some embodiments of the first aspect, in some embodiments, performing early synchronization and / or TCI state activation or deactivation on candidate cells for conditional mobility configuration includes:

[0110] The terminal performs early downlink synchronization on the candidate cells;

[0111] The terminal activates or selects at least one downlink TCI state of the candidate cell;

[0112] The terminal activates or selects at least one downlink beam of the candidate cell;

[0113] The terminal acquires the TA value of the candidate cell;

[0114] The terminal performs early uplink synchronization on the candidate cells;

[0115] The terminal performs early RACH on the candidate cells;

[0116] The terminal activates or selects at least one uplink TCI state of the candidate cell;

[0117] The terminal activates or selects at least one uplink beam of the candidate cell.

[0118] In the above embodiments, the types of operations performed on candidate cells for conditional mobility configuration, such as advance synchronization and / or TCI state activation or deactivation, are varied to ensure the comprehensiveness of the operations performed on candidate cells for conditional mobility configuration.

[0119] In conjunction with some embodiments of the first aspect, in some embodiments, the terminal obtains the TA value of the first cell in at least one of the following ways:

[0120] The terminal performs a TA (Timing Advance) measurement to obtain the TA value;

[0121] The terminal initiates an early RACH on the candidate cell to obtain the TA value.

[0122] In the above embodiments, the method of obtaining the TA value of the first cell is extended, thereby ensuring the reliability of the obtained TA value.

[0123] In conjunction with some embodiments of the first aspect, in some embodiments, the way in which the terminal activates or selects at least one downlink TCI state or beam of the candidate cell includes at least one of the following:

[0124] The terminal activates or selects at least one downlink TCI state or beam of the candidate cell based on the configuration of the network device.

[0125] The terminal activates or selects at least one downlink TCI state or beam of the candidate cell based on the measurement results.

[0126] In the above embodiments, the method of at least one downlink TCI state or beam activation or selection of the first cell is extended, thereby ensuring the accuracy of at least one downlink TCI state or beam activation or selection of the first cell.

[0127] In conjunction with some embodiments of the first aspect, in some embodiments, the way in which the terminal activates or selects at least one uplink TCI state or beam of the candidate cell includes at least one of the following:

[0128] The terminal activates or selects at least one uplink TCI state or beam of the candidate cell based on the configuration of the network device.

[0129] The terminal activates or selects at least one uplink TCI state or beam of the candidate cell based on the measurement results.

[0130] In the above embodiments, the method of at least one uplink TCI state or beam activation or selection of the first cell is extended, thereby ensuring the accuracy of at least one uplink TCI state or beam activation or selection of the first cell.

[0131] In conjunction with some embodiments of the first aspect, in some embodiments, the candidate cells for the conditional mobility configuration include candidate cells that satisfy the first condition.

[0132] In conjunction with some embodiments of the first aspect, in some embodiments, the method further includes:

[0133] Receive condition-triggered mobility configuration and / or measurement configuration.

[0134] In conjunction with some embodiments of the first aspect, in some embodiments, the mobility configuration includes at least one of the following:

[0135] Configuration identifier;

[0136] Candidate community identifier;

[0137] Candidate configurations;

[0138] Execution condition configuration;

[0139] Configure upstream synchronization in advance;

[0140] Reference signal configuration;

[0141] TCI information;

[0142] TA information for candidate cells.

[0143] In the above embodiments, the terminal ensures the accuracy of the configuration by receiving condition-triggered mobility configuration and / or measurement configuration, thereby ensuring the accuracy of subsequently determining the first cell that meets the mobility conditions.

[0144] In conjunction with some embodiments of the first aspect, in some embodiments, the conditions for the mobility configuration include at least one of the following:

[0145] The execution conditions for L1 measurement;

[0146] Conditions for performing LTM measurements;

[0147] Conditions for performing CSI measurements;

[0148] Execution conditions for beam measurement;

[0149] Execution conditions for L3 measurement;

[0150] Conditions for performing RRM measurements.

[0151] Secondly, embodiments of this disclosure provide an advance synchronization method, the method being executed by a network device, the method comprising:

[0152] Send a first configuration, which is used to configure a first condition, which is used to perform early synchronization and / or TCI state activation or deactivation on candidate cells of condition-based mobility configuration when the terminal meets the condition.

[0153] In conjunction with some embodiments of the second aspect, in some embodiments, the method further includes:

[0154] The receiving terminal sends a first request message, which is used to request the network device to trigger the terminal to perform early synchronization and / or TCI state activation or deactivation on candidate cells of conditional mobility configuration.

[0155] In conjunction with some embodiments of the second aspect, in some embodiments, the first request information includes at least one of the following:

[0156] Instruction information, the instruction information being used to instruct the terminal to perform operations on candidate cells based on conditional mobility configuration;

[0157] Candidate cell identifier, which is used to indicate the candidate cell;

[0158] Candidate configuration identifier, which is used to indicate the configuration of the candidate cell;

[0159] At least one beam information, the beam information being used to indicate the beam of the candidate cell;

[0160] At least one TCI status information, the TCI status information being used to indicate the TCI status of the candidate cell;

[0161] Cell-level measurement results, which are used to indicate the measurement results of the candidate cells;

[0162] At least one beam-level measurement result, which is used to indicate the measurement result of at least one beam of the candidate cell.

[0163] In conjunction with some embodiments of the second aspect, in some embodiments, the first condition is associated with one or more of the following:

[0164] Measurement results of the terminal's serving cell;

[0165] Measurement results of candidate cells for the terminal;

[0166] Measuring events;

[0167] Execution conditions for conditional mobility configuration.

[0168] In conjunction with some embodiments of the second aspect, in some embodiments, the first condition includes at least one of the following:

[0169] The measurement result of the serving cell of the terminal is less than the first threshold and the measurement result of the candidate cell is greater than the second threshold;

[0170] The measurement result of the serving cell's beam is less than the third threshold and the measurement result of the terminal's candidate cell's beam is greater than the fourth threshold.

[0171] The beam measurement result of the candidate cell is greater than the fourth threshold value;

[0172] The measurement result of the candidate cell is greater than the second threshold value;

[0173] The measurement result of the serving cell is less than the first threshold value;

[0174] The measurement result of the beam of the serving cell is less than the third threshold value.

[0175] In conjunction with some embodiments of the second aspect, in some embodiments, the method further includes:

[0176] Send a first configuration to the terminal, the first configuration being used to configure the first condition.

[0177] In conjunction with some embodiments of the second aspect, in some embodiments, the first configuration includes at least one of the following:

[0178] A configuration identifier, which is used to indicate the first configuration;

[0179] The first threshold value of the measurement results for the service area;

[0180] The second threshold value for candidate cell measurement results;

[0181] The third threshold value of the measurement results of the serving cell's beam;

[0182] The fourth threshold value of the beam measurement results for the candidate cell;

[0183] Hysteresis value;

[0184] Trigger time;

[0185] Number of triggers.

[0186] In conjunction with some embodiments of the second aspect, in some embodiments, the first condition is associated with a measurement event.

[0187] In conjunction with some embodiments of the second aspect, in some embodiments, the measurement events include measurement reporting events and / or mobility events.

[0188] In conjunction with some embodiments of the second aspect, in some embodiments, the measurement event includes at least one of the following:

[0189] L3 incident;

[0190] RRM incident;

[0191] L1 incident;

[0192] LTM events;

[0193] CSI measurement events;

[0194] CSI reported the incident;

[0195] LTM's CSI event.

[0196] In conjunction with some embodiments of the second aspect, in some embodiments, the first condition includes at least one of the following:

[0197] The execution conditions for condition-based mobility configuration must be met;

[0198] At least one event that satisfies the execution conditions associated with the condition-based mobility configuration;

[0199] An entry condition that satisfies the execution conditions associated with at least one event of the condition-based mobility configuration.

[0200] In conjunction with some embodiments of the second aspect, in some embodiments, the mobility execution process is postponed if the terminal meets the execution conditions of the condition-based mobility configuration.

[0201] In conjunction with some embodiments of the second aspect, in some embodiments, the mobility execution process is postponed upon satisfaction of a second condition; the second condition includes at least one of the following:

[0202] The measurement result of the service cell is greater than the fifth threshold value;

[0203] The events associated with the execution conditions of candidate cells that meet the execution conditions are preset events;

[0204] The terminal failed to perform advance synchronization and / or TCI status activation or deactivation for candidate cells that met the execution conditions;

[0205] The terminal has performed advance synchronization and / or TCI status activation or deactivation on candidate cells that meet the execution conditions, but the information obtained is invalid.

[0206] The terminal did not obtain a valid TA value for a candidate cell that met the execution conditions;

[0207] The terminal has not activated the TCI state or beam of at least one candidate cell that meets the execution conditions.

[0208] In conjunction with some embodiments of the second aspect, in some embodiments, performing early synchronization and / or TCI state activation or deactivation on candidate cells for conditional mobility configuration includes:

[0209] The terminal performs early downlink synchronization on the candidate cells;

[0210] The terminal activates or selects at least one downlink TCI state of the candidate cell;

[0211] The terminal activates or selects at least one downlink beam of the candidate cell;

[0212] The terminal acquires the TA value of the candidate cell;

[0213] The terminal performs early uplink synchronization on the candidate cells;

[0214] The terminal performs early RACH on the candidate cells;

[0215] The terminal activates or selects at least one uplink TCI state of the candidate cell;

[0216] The terminal activates or selects at least one uplink beam of the candidate cell.

[0217] In conjunction with some embodiments of the second aspect, in some embodiments, the terminal obtains the TA value of the first cell in at least one of the following ways:

[0218] The terminal performs a TA measurement to obtain the TA value;

[0219] The terminal initiates an early RACH on the candidate cell to obtain the TA value.

[0220] In conjunction with some embodiments of the second aspect, in some embodiments, the way in which the terminal activates or selects at least one downlink TCI state or beam of the candidate cell includes at least one of the following:

[0221] The terminal activates or selects at least one downlink TCI state or beam of the candidate cell based on the configuration of the network device.

[0222] The terminal activates or selects at least one downlink TCI state or beam of the candidate cell based on the measurement results.

[0223] In conjunction with some embodiments of the second aspect, in some embodiments, the method by which the terminal activates or selects at least one uplink TCI state or beam of the candidate cell includes at least one of the following:

[0224] The terminal activates or selects at least one uplink TCI state or beam of the candidate cell based on the configuration of the network device.

[0225] The terminal activates or selects at least one uplink TCI state or beam of the candidate cell based on the measurement results.

[0226] In conjunction with some embodiments of the second aspect, in some embodiments, the candidate cells for the conditional mobility configuration include candidate cells that satisfy the first condition.

[0227] In conjunction with some embodiments of the second aspect, in some embodiments, the method further includes:

[0228] Send condition-triggered mobility configuration and / or measurement configuration.

[0229] In conjunction with some embodiments of the second aspect, in some embodiments, the mobility configuration includes at least one of the following:

[0230] Configuration identifier;

[0231] Candidate community identifier;

[0232] Candidate configurations;

[0233] Execution condition configuration;

[0234] Configure upstream synchronization in advance;

[0235] Reference signal configuration;

[0236] TCI information;

[0237] TA information for candidate cells.

[0238] In conjunction with some embodiments of the second aspect, in some embodiments, the conditions for the mobility configuration include at least one of the following:

[0239] The execution conditions for L1 measurement;

[0240] Conditions for performing LTM measurements;

[0241] Conditions for performing CSI measurements;

[0242] Execution conditions for beam measurement;

[0243] Execution conditions for L3 measurement;

[0244] Conditions for performing RRM measurements.

[0245] Thirdly, embodiments of this disclosure provide an advance synchronization method, the method comprising:

[0246] The network device sends a first condition, which is used to perform early synchronization and / or TCI state activation or deactivation on candidate cells of condition-based mobility configuration when the terminal satisfies the condition.

[0247] Once the terminal determines that the first condition is met, the terminal performs advance synchronization and / or TCI state activation or deactivation on the candidate cells of the condition-based mobility configuration.

[0248] Fourthly, embodiments of this disclosure provide an advance synchronization device, which includes at least one of a transceiver module and a processing module; wherein the advance synchronization device is used to execute optional implementations of the first and third aspects.

[0249] Fifthly, embodiments of this disclosure provide an advance synchronization device, which includes at least one of a transceiver module and a processing module; wherein the advance synchronization device is used to execute optional implementations of the second and third aspects.

[0250] Sixthly, embodiments of this disclosure provide a terminal, including:

[0251] One or more processors;

[0252] The terminal is used to execute the method described in any one of the first and third aspects.

[0253] In a seventh aspect, embodiments of this disclosure provide a network device, including:

[0254] One or more processors;

[0255] The network device is used to perform the method described in any one of the second and third aspects.

[0256] Eighthly, embodiments of this disclosure provide a storage medium storing first information, which, when executed on a communication device, causes the communication device to perform the method as described in any one of the first, second, and third aspects.

[0257] Ninthly, embodiments of this disclosure provide a program product that, when executed by a communication device, causes the communication device to perform the method described in any of the first, second, and third aspects.

[0258] In a tenth aspect, embodiments of this disclosure provide a computer program that, when run on a communication device, causes the communication device to perform the methods described in any of the first, second, and third aspects.

[0259] Eleventhly, embodiments of this disclosure provide a chip or chip system. The chip or chip system includes processing circuitry configured to perform the methods described in any of the first, second, and third aspects.

[0260] It is understood that the aforementioned terminals, storage media, program products, computer programs, chips, or chip systems are all used to execute the methods proposed in the embodiments of this disclosure. Therefore, the beneficial effects they can achieve can be referred to the beneficial effects in the corresponding methods, and will not be repeated here.

[0261] This disclosure provides an advance synchronization method, apparatus, and storage medium. In some embodiments, the terms "advance synchronization method" and "information processing method," "cell determination method," etc., can be used interchangeably, as can the terms "advance synchronization apparatus" and "information processing apparatus," "cell determination apparatus," etc.

[0262] This disclosure is not exhaustive, but merely illustrative of some embodiments, and is not intended to limit the scope of protection of this disclosure. Unless otherwise specified, each step in a particular embodiment can be implemented as an independent embodiment, and the steps can be arbitrarily combined. For example, a solution after removing some steps in a particular embodiment can also be implemented as an independent embodiment, and the order of the steps in a particular embodiment can be arbitrarily interchanged. Furthermore, the optional implementation methods in a particular embodiment can be arbitrarily combined; moreover, the embodiments can be arbitrarily combined, for example, some or all steps of different embodiments can be arbitrarily combined, and a particular embodiment can be arbitrarily combined with the optional implementation methods of other embodiments.

[0263] In each of the disclosed embodiments, unless otherwise specified or in case of logical conflict, the terminology and / or descriptions of the embodiments are consistent and can be referenced by each other. Technical features in different embodiments can be combined to form new embodiments based on their inherent logical relationships.

[0264] The terminology used in the embodiments of this disclosure is for the purpose of describing particular embodiments only and is not intended to limit the scope of this disclosure.

[0265] In this embodiment of the disclosure, unless otherwise stated, elements expressed in the singular form, such as "a," "an," "the," "the," "the," "the," "the," "the," "this," etc., can mean "one and only one," or "one or more," "at least one," etc. For example, when using articles such as "a," "an," "the," etc. in translation, the noun following the article can be understood as either a singular expression or a plural expression.

[0266] In the embodiments disclosed herein, "multiple" refers to two or more.

[0267] In some embodiments, the terms “at least one of”, “one or more”, “a plurality of”, “multiple”, etc., may be used interchangeably.

[0268] In some embodiments, the notation "at least one of A and B", "A and / or B", "A in one case, B in another", "in response to one case A, in response to another case B", etc., may include the following technical solutions depending on the situation: in some embodiments, A (execute A regardless of B); in some embodiments, B (execute B regardless of A); in some embodiments, execution is selected from A and B (A and B are selectively executed); in some embodiments, A and B (both A and B are executed). The same applies when there are more branches such as A, B, C, etc.

[0269] In some embodiments, the notation "A or B" may include the following technical solutions, depending on the situation: in some embodiments, A (execute A regardless of B); in some embodiments, B (execute B regardless of A); in some embodiments, execution is selected from A and B (A and B are selectively executed). The same applies when there are more branches such as A, B, C, etc.

[0270] The prefixes "first," "second," etc., used in the embodiments of this disclosure are merely for distinguishing different descriptive objects and do not impose restrictions on the position, order, priority, quantity, or content of the descriptive objects. The description of the descriptive objects is found in the claims or the context of the embodiments, and the use of prefixes should not constitute unnecessary restrictions. For example, if the descriptive object is a "field," the ordinal numbers preceding "field" in "first field" and "second field" do not restrict the position or order of the "fields." "First" and "second" do not restrict whether the "fields" they modify are in the same message, nor do they restrict the order of "first field" and "second field." Similarly, if the descriptive object is a "level," the ordinal numbers preceding "level" in "first level" and "second level" do not restrict the priority between "levels." Furthermore, the number of descriptive objects is not limited by ordinal numbers and can be one or more. For example, in "first device," the number of "devices" can be one or more. Furthermore, the objects modified by different prefixes can be the same or different. For example, if the object being described is "device", then "first device" and "second device" can be the same device or different devices, and their types can be the same or different. Similarly, if the object being described is "information", then "first information" and "second information" can be the same information or different information, and their content can be the same or different.

[0271] In some embodiments, “including A,” “containing A,” “for indicating A,” and “carrying A” can be interpreted as directly carrying A or indirectly indicating A.

[0272] In some embodiments, the terms “in response to…”, “in response to determining…”, “in the case of…”, “when…”, “if…”, “if…”, etc., can be used interchangeably.

[0273] In some embodiments, the terms “greater than,” “greater than or equal to,” “not less than,” “more than,” “more than or equal to,” “not less than,” “higher than,” “higher than or equal to,” “not lower than,” and “above” can be used interchangeably, as can the terms “less than,” “less than or equal to,” “not greater than,” “less than,” “less than or equal to,” “not more than,” “lower than,” “lower than or equal to,” “not higher than,” and “below”.

[0274] In some embodiments, the apparatus and device may be interpreted as physical or virtual, and their names are not limited to the names recorded in the embodiments. In some cases, they may also be understood as "equipment", "device", "circuit", "network element", "node", "function", "unit", "section", "system", "network", "chip", "chip system", "entity", "body", etc.

[0275] In some embodiments, "network" can be interpreted as devices included in the network, such as access network devices, core network devices, etc.

[0276] In some embodiments, "access network device (AN device)" may also be referred to as "radio access network device (RAN device)," "base station (BS)," "radio base station," or "fixed station." In some embodiments, it may also be understood as "node," "access point," "transmission point (TP)," "reception point (RP)," "transmission and / or reception point (TRP)," "panel," "antenna panel," "antenna array," "cell," "macro cell," "small cell," "femto cell," "pico cell," "sector," "cell group," "serving cell," "carrier," "component carrier," or "bandwidth part (BWP)."

[0277] In some embodiments, "terminal" or "terminal device" may be referred to as "user equipment (UE)," "user terminal," "mobile station (MS)," "mobile terminal (MT)," "subscriber station," "mobile unit," "subscriber unit," "wireless unit," "remote unit," "mobile device," "wireless device," "wireless communication device," "remote device," "mobile subscriber station," "access terminal," "mobile terminal," "wireless terminal," "remote terminal," "handset," "user agent," "mobile client," "client," etc.

[0278] In some embodiments, the acquisition of data, information, etc., may comply with the laws and regulations of the country where the location is situated.

[0279] In some embodiments, data, information, etc., may be obtained with the user's consent.

[0280] Furthermore, each element, each row, or each column in the table of this disclosure can be implemented as an independent embodiment, and any combination of any element, any row, or any column can also be implemented as an independent embodiment.

[0281] Figure 1 is a schematic diagram of the architecture of a communication system according to an embodiment of the present disclosure. As shown in Figure 1, the method provided in this embodiment can be applied to a communication system 100, which may include a terminal 101 and a network device 102. It should be noted that the communication system 100 may also include other devices, and this disclosure does not limit the devices included in the communication system 100.

[0282] In some embodiments, terminal 101 includes, but is not limited to, at least one of the following: mobile phone, wearable device, Internet of Things device, car with communication function, smart car, tablet computer, computer with wireless transceiver function, virtual reality (VR) terminal device, augmented reality (AR) terminal device, wireless terminal device in industrial control, wireless terminal device in self-driving, wireless terminal device in remote medical surgery, wireless terminal device in smart grid, wireless terminal device in transportation safety, wireless terminal device in smart city, and wireless terminal device in smart home.

[0283] In some embodiments, network device 102 may include at least one of access network device and core network device.

[0284] In some embodiments, the access network device is, for example, a node or device that connects a terminal to a wireless network. The access network device may include, but is not limited to, at least one of the following in a 5G communication system: evolved Node B (eNB), next-generation eNB (ng-eNB), next-generation Node B (gNB), node B (NB), home node B (HNB), home evolved node B (HeNB), radio backhaul device, radio network controller (RNC), base station controller (BSC), base transceiver station (BTS), base band unit (BBU), mobile switching center, base station in a 6G communication system, open RAN, cloud RAN, base station in other communication systems, and access node in a Wi-Fi system.

[0285] In some embodiments, the technical solutions of this disclosure can be applied to the Open RAN architecture. In this case, the interfaces between or within access network devices involved in the embodiments of this disclosure can be transformed into internal interfaces of Open RAN. The processes and information interactions between these internal interfaces can be implemented by software or programs.

[0286] In some embodiments, the access network device may be composed of a central unit (CU) and a distributed unit (DU). The CU may also be called a control unit. The CU-DU structure can separate the protocol layer of the access network device. Some of the protocol layer functions are centrally controlled by the CU, while the remaining part or all of the protocol layer functions are distributed in the DU and centrally controlled by the CU. However, this is not the only possibility.

[0287] In some embodiments, a core network device may be a single device comprising one or more network elements, or it may be multiple devices or a group of devices, each comprising all or part of the aforementioned one or more network elements. Network elements may be virtual or physical. The core network may include, for example, at least one of an Evolved Packet Core (EPC), a 5G Core Network (5GCN), or a Next Generation Core (NGC).

[0288] It is understood that the communication system described in this disclosure is for the purpose of more clearly illustrating the technical solutions of this disclosure, and does not constitute a limitation on the technical solutions proposed in this disclosure. As those skilled in the art will know, with the evolution of system architecture and the emergence of new business scenarios, the technical solutions proposed in this disclosure are also applicable to similar technical problems.

[0289] The following embodiments of this disclosure can be applied to the communication system 100 shown in FIG1, or to some of the main bodies, but are not limited thereto. The main bodies shown in FIG1 are illustrative. The communication system may include all or some of the main bodies in FIG1, or may include other main bodies outside of FIG1. ​​The number and form of each main body are arbitrary. Each main body may be physical or virtual. The connection relationship between the main bodies is illustrative. The main bodies may not be connected or may be connected. The connection can be in any way, it can be a direct connection or an indirect connection, it can be a wired connection or a wireless connection.

[0290] The embodiments disclosed herein can be applied to Long Term Evolution (LTE), LTE-Advanced (LTE-A), LTE-Beyond (LTE-B), SUPER 3G, IMT-Advanced, 4th generation mobile communication system (4G), 5th generation mobile communication system (5G), 5G new radio (NR), Future Radio Access (FRA), New-Radio Access Technology (RAT), New Radio (NR), New radio access (NX), Future generation radio access (FX), Global System for Mobile communications (GSM), CDMA2000, Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), and IEEE 802.20, Ultra-Wideband (UWB), Bluetooth (a registered trademark), Public Land Mobile Network (PLMN) networks, Device-to-Device (D2D) systems, Machine-to-Machine (M2M) systems, Internet of Things (IoT) systems, Vehicle-to-Everything (V2X) systems, systems utilizing other pre-synchronization methods, and next-generation systems built upon them, etc. Furthermore, multiple systems can be combined (e.g., a combination of LTE or LTE-A with 5G).

[0291] This disclosure relates to condition-triggered mobility, which will be described below.

[0292] In some embodiments, the terminal obtains the pre-configuration conditions of the network device configuration and the pre-configuration cell or pre-configuration cell group corresponding to the pre-configuration conditions, and then determines whether the pre-configuration conditions are met and whether to change the serving cell to the pre-configuration cell or pre-configuration cell group that meets the pre-configuration conditions.

[0293] In some embodiments, the terminal may also change the configuration of a specific cell or a specific cell group after determining that pre-configuration conditions are met, based on instructions from the network device. For example, the terminal's PCell configuration may be changed from a first configuration of the candidate cell or candidate cell group to a second configuration of the candidate cell or candidate cell group. Optionally, the cell configuration may include radio bearer, cell group, measurement configuration, etc.

[0294] Optionally, mobility in this disclosure includes subsequent mobility (subsequent mobility, continuous mobility, or ongoing mobility).

[0295] In some embodiments, a condition-triggered mobility process includes at least one of the following:

[0296] (1) Condition-triggered L3 mobility.

[0297] Among them, condition-triggered L3 mobility includes at least one of CHO (Conditional Handover), CPA (Conditional PSCell Addition), CPC (Conditional PSCell Change), CHO with Candidate SCG(s), or CHO with target SCG.

[0298] It should be noted that mobility operations such as CHO, CPA, and CPC all support Subsequent Mobility, that is, Subsequent CHO, Subsequent CPA, and Subsequent CPC.

[0299] Optionally, CHO refers to a handover performed by the UE when one or more handover execution conditions are met. After receiving the CHO configuration, the UE begins to evaluate the execution conditions and stops evaluating the execution conditions after performing a handover (including legacy handover and CHO).

[0300] Optionally, the CHO configuration includes CHO candidate cell configuration and execution conditions. It should be noted that the execution conditions include at least one trigger condition. Optionally, the trigger condition refers to a CHO event. Optionally, CHO events include CHO event A3, CHO event A5, etc. Wherein, CHO event A3: the offset of the candidate cell is better than PCell or PCell. CHO event A5: PCell or PCell is less than an absolute threshold d1, and the candidate cell is higher than another absolute threshold d2.

[0301] Optionally, CHO with target SCG means that the CHO is executed while simultaneously updating the SCG and / or PSCell.

[0302] Optionally, CHO with Candidate SCG refers to triggering changes to MCG or PCell and changes or additions to SCG or PSCell based on conditions.

[0303] Optionally, Subsequent CPAC (Subsequent Conditional PSCell Addition or Change, adding conditional primary and secondary cells).

[0304] In some embodiments, considering conditional handover (CHO) and conditional PSCell change (CPC) or conditional PSCell addition (CPA), a terminal configured with CHO, CPC, or CPA must release the CHO, CPC, or CPA configuration upon completing random access to the target PCell or PSCell. Therefore, if the network does not reconfigure and reinitialize the CHO, CPC, or CPA, the terminal will have no opportunity to subsequently execute CHO, CPC, or CPA. This increases handover or SCG change latency and signaling overhead, especially in FR2 scenarios with frequent CG changes. This leads to the introduction of subsequent CHO or CPAC.

[0305] In some embodiments, Subsequent CPAC refers to a conditional PSCell addition or change process performed based on a pre-configured subsequent CPAC configuration of candidate PSCells after a PSCell is added, changed, or an SCG is released, without requiring reconfiguration and restart of CPC or CPA during the process.

[0306] For subsequent CPAC, after the UE performs one or more operations such as adding a PSCell, changing a PSCell, releasing an SCG, or changing a PCell, the UE will not automatically delete the corresponding conditional reconfiguration information (this is different from legacy CPAC).

[0307] Optionally, Subsequent CHO (Subsequent Conditional Handover) refers to the requirement that a terminal configured with CHO, CPC, or CPA must release its CHO, CPC, or CPA configuration when completing random access to the target PCell or PSCell, considering both conditional handover (CHO) and conditional PSCell change (CPC) or conditional PSCell addition (CPA). Therefore, if the network device does not reconfigure and reinitialize the CHO, CPC, or CPA, the terminal will have no opportunity to continue executing the CHO, CPC, or CPA. This increases the latency of handover or SCG change and increases signal overhead, especially in FR2 scenarios with frequent CG changes. Therefore, Subsequent CHO or CPAC was proposed.

[0308] Therefore, Subsequent CHO may also be supported for CHO in the future.

[0309] Optionally, Subsequent CHO is a pre-configured CHO process executed after mobility occurs, without requiring reconfiguration and restart of the CHO.

[0310] For subsequent CHOs, the terminal will not automatically delete the corresponding conditional reconfiguration (CHO) configuration information after performing one or more of the following operations: switchover, LTM, PSCell addition, PSCell modification, SCG release, PCell change.

[0311] (2) Condition-triggered LTM.

[0312] Optionally, condition-triggered LTM is used for MCG changes or SCG changes.

[0313] For example, condition-triggered LTMs include condition-triggered LTMs for MCGs or condition-triggered LTMs for SCGs.

[0314] Optionally, Conditional LTM (Condition-triggered LTM).

[0315] Condition-triggered LTMs can be used for both MCG and SCG changes, including Conditional LTMs for MCG and Conditional LTMs for SCG.

[0316] Optionally, Conditional LTM will be discussed.

[0317] o Specify the UE evaluated conditions for triggering LTM

[0318] The aim is to support conditional LTM, including subsequent LTM.

[0319] Similar to LTM, Conditional LTM will also consider supporting RACH-less and related L1 LTM measurements, etc. For details, please refer to the LTM section.

[0320] Furthermore, Conditional LTM will also consider supporting Subsequent Conditional LTM. Subsequent Conditional LTM refers to Subsequent LTM cell switching procedures between candidate cells without RRC reconfiguration by the network. In other words, after a mobility operation is performed, the UE will not automatically delete the Conditional LTM configuration information. This LTM configuration information can continue to be used to trigger subsequent Conditional LTM (Subsequent Conditional LTM) even without RRC reconfiguration and updates.

[0321] In some embodiments, during the LTM process, early downlink synchronization for candidate cells is supported.

[0322] Optionally, the terminal can activate the TCI state of one or more cells that are different from the current serving cell, based on network configuration or other schemes. For example, the TCI state of these cells can be activated in advance before any LTM candidate cell becomes the serving cell. This allows the terminal to perform downlink synchronization with these candidate cells in advance, thereby enabling a faster handover to one of the candidate cells when a cell switch is triggered.

[0323] In this embodiment of the disclosure, supporting early uplink synchronization can effectively reduce handover interruption time.

[0324] In the existing LTM process triggered by network devices, the network device activates or deactivates the TCI status of one or more cells by sending a Candidate Cell TCI States Activation or Deactivation MAC CE.

[0325] In some embodiments, Candidate Cell TCI States Activation or Deactivation

[0326] Optionally, the network may activate and deactivate the TCI states of LTM candidate cells configured in CandidateTCI-State and CandidateTCI-UL-State by sending the Candidate Cell TCI States Activation or Deactivation MAC CE described in clause 6.1.3.76. The network deactivates the TCI state(s) for one LTM candidate cell by not including the corresponding TCI state ID field(s) in the Candidate Cell TCI States Activation or Deactivation MAC CE.

[0327] Optionally, the MAC entity should:

[0328] (1) If the MAC entity receives a candidate unit TCI state activation or deactivation MAC CE on the service unit:

[0329] (2) Instruct the lower level on information about the activation or deactivation of the candidate cell TCI state MAC CE.

[0330] In some embodiments, during the LTM process, early downlink synchronization for candidate cells is supported.

[0331] Currently, two methods are supported for obtaining the TA values ​​of LTM candidate cells in advance: advance TA acquisition and UE-based TA measurement, to support RACH-less LTM Cell Switching. Performing advance uplink synchronization on candidate cells enables RACH-less LTM Cell Switching, which can effectively reduce data interruptions during handover.

[0332] To better reduce handover interruptions, future 6G mobility needs to support RACH-less handover. Supporting RACH-less handover can effectively reduce handover interruption time with lower complexity. The Early TA acquisition method in LTM can be extended to 6G L3 RACH-less handover.

[0333] Figure 2A is an interactive schematic diagram of an advance synchronization method according to an embodiment of the present disclosure. As shown in Figure 2A, the embodiments of the present disclosure relate to an advance synchronization method, which includes:

[0334] In step S2101, the network device sends a condition-triggered mobility configuration and / or measurement configuration.

[0335] In some embodiments, the terminal receives condition-triggered mobility configuration and / or measurement configuration sent by the network device.

[0336] Optionally, the network device sending condition-triggered mobility configuration and / or measurement configuration includes: the network device sending condition-triggered mobility configuration, and the terminal receiving the condition-triggered mobility configuration. Alternatively, the network device sending condition-triggered measurement configuration, and the terminal receiving the condition-triggered measurement configuration. Or, the network device sending both condition-triggered mobility configuration and condition-triggered measurement configuration, and the terminal receiving both.

[0337] In some embodiments, condition-triggered mobility configuration includes at least one of the following:

[0338] (1) Mobility identifier.

[0339] In some embodiments, the mobility identifier is used to indicate a mobility configuration. For example, mobility identifier 1 corresponds to mobility configuration A, mobility identifier 2 corresponds to mobility configuration B, and mobility identifier 3 corresponds to mobility configuration C.

[0340] In some embodiments, after receiving a configuration identifier, the terminal looks up the corresponding mobility configuration based on the configuration identifier, and then determines whether the terminal meets the execution conditions of the mobility configuration based on the mobility configuration corresponding to the configuration identifier.

[0341] (2) Candidate cell identifier.

[0342] In some embodiments, the candidate cell identifier is used to indicate a candidate cell. For example, candidate cell identifier 1 corresponds to candidate cell 1, and candidate cell identifier 2 corresponds to candidate cell 2.

[0343] In some embodiments, after receiving a candidate cell identifier, the terminal can determine which candidate cells the mobility configuration is configured for based on the candidate cell identifier, and then determine whether the candidate cell corresponding to the candidate cell identifier meets the execution conditions of the mobility configuration.

[0344] (3) Candidate configurations.

[0345] In some embodiments, the candidate configuration is used to configure candidate cells. Optionally, the candidate configuration includes the time-domain resources, frequency-domain resources, geographical location, etc. of the candidate cells, which is not limited in this embodiment.

[0346] In some embodiments, after receiving the candidate configuration, the terminal can determine the time domain resources, frequency domain resources, geographical location, etc. of the candidate cell, and then determine whether the execution conditions of mobility configuration are met based on the candidate configuration.

[0347] (4) Execution condition configuration.

[0348] In some embodiments, the execution condition configuration is used to configure execution conditions. Optionally, the execution conditions include at least one of the following:

[0349] 1. Execution conditions for L1 measurement.

[0350] 2. Execution conditions for LTM measurement.

[0351] 3. Conditions for performing CSI measurements.

[0352] 4. Execution conditions for beam measurement.

[0353] Optionally, the execution conditions for L1 measurement, LTM measurement, CSI measurement, or beam measurement include at least one of the following events:

[0354] Event 1: The beam quality of the serving cell is less than the absolute threshold.

[0355] Event 2: The beam offset of the candidate cell is higher than that of the serving cell.

[0356] Event 3: The beam quality of the candidate cell is better than the absolute threshold.

[0357] Event 4: The beam quality of the serving cell is less than the first absolute threshold and the beam quality of the candidate cell is greater than the second absolute threshold d2.

[0358] In this embodiment of the disclosure, the terminal can determine whether to execute the measurement corresponding to the execution condition that is met based on the above-mentioned execution conditions. For example, if it is determined that the execution condition for L1 measurement is met, then L1 measurement is executed. Alternatively, if it is determined that the execution condition for LTM measurement is met, then LTM measurement is executed.

[0359] 5. Execution conditions for L3 measurement.

[0360] 6. Conditions for performing RRM measurements.

[0361] Optionally, the execution conditions for L3 measurement or RRM measurement can be any one or more of the following events:

[0362] Event A1: Serving becomes better than absolute threshold.

[0363] Event A2: Serving becomes worse than absolute threshold.

[0364] Event A3: Neighbour becomes a better amount of offset than PCell or PSCell.

[0365] Event A4: Neighbour becomes better than absolute threshold.

[0366] Event A5: The primary cell or primary / secondary cell deteriorates below the absolute threshold d1, while the neighboring cell or secondary cell improves above another absolute threshold d2.

[0367] Event A6: Neighbour becomes a better amount of offset than SCell.

[0368] Event D1: The distance between the terminal and a reference location referenceLocation1 becomes larger than the configured threshold distanceThreshFromReference1, and the distance between the terminal and a reference location referenceLocation2 becomes shorter than the configured threshold distanceThreshFromReference2.

[0369] Event D2: The distance between the serving cell moving reference location determined based on movingReferenceLocation and its corresponding satellite ephemeris and epoch time broadcast in SIB19 and the terminal is greater than the configured threshold distanceThreshFromReference1, and the distance between the UE and a moving reference location determined based on referenceLocation and its corresponding satellite ephemeris and epoch time for the neighbor cell provided in the associated MeasObjectNR is less than the configured threshold distanceThreshFromReference2.

[0370] The following conditional events refer to events used for conditional mobility (or conditional mobility).

[0371] Conditional event A3: The offset of the candidate cell based on the condition is better than that of the primary cell or the primary / secondary cell.

[0372] Conditional event A4: Conditional reconfiguration candidate becomes better than absolute threshold. condEventA4 can also be used for the current PSCell (i.e., if it is configured as a candidate PSCell for condEventA4 evaluation) for CHO with candidate SCG(s) case.

[0373] Conditional Event A5: The primary cell or secondary cell is 1 point worse than the absolute threshold, and the conditional reconfiguration candidate is 2 points better than another absolute threshold.

[0374] Conditional Event D1: The distance between the UE and a reference location referenceLocation1 becomes larger than the configured threshold distanceThreshFromReference1, and the distance between the UE and a reference location referenceLocation2 of conditional reconfiguration candidate becomes shorter than the configured threshold distanceThreshFromReference2.

[0375] Conditional Event D2: The distance between the UE and the serving cell moving reference location determined based on movingReferenceLocation and its corresponding satellite ephemeris and epoch time broadcast in SIB19 becomes larger than the configured threshold distanceThreshFromReference1, and the distance between the UE and a moving reference location determined based on referenceLocation and its corresponding satellite ephemeris and epoch time for the conditional reconfiguration candidate provided in the associated MeasObjectNR becomes shorter than the configured threshold distanceThreshFromReference2.

[0376] Conditional Event T1: The time measured at the UE is greater than the configured threshold t1-threshold, but less than t1-threshold+duration.

[0377] Conditional event X1: Serving L2 U2N Relay UE becomes worse than absolute threshold1 AND NR Cell becomes better than another absolute threshold2.

[0378] Conditional event X2: Serving L2 U2N Relay UE becomes worse than absolute threshold.

[0379] For conditional event I1, the measurement reporting event is based on CLI measurement results, which can be derived from either SRS-RSRP or CLI-RSSI.

[0380] Conditional event I1: Interference becomes higher than the absolute threshold.

[0381] Reporting events concerning Aerial UE altitude are labeled HN, with N equal to 1 and 2 respectively. Additionally, reporting events involving both Aerial UE altitude and neighboring cell measurements are labeled AMHN, with M = 3, 4, 5 and N = 1, 2.

[0382] Conditional event H1: Aerial UE altitude becomes higher than a certain threshold.

[0383] Conditional event H2: Aerial UE altitude becomes lower than the threshold.

[0384] Conditional event A3H1: Neighbour offset is better than SpCell and the Aerial UE altitude is higher than a threshold.

[0385] Conditional event A3H2: Neighbour becomes offset better than SpCell and the Aerial UE altitude becomes lower than a threshold.

[0386] Conditional event A4H1: Neighbour becomes better than threshold1 and the Aerial UE altitude becomes higher than a threshold2.

[0387] Conditional event A4H2: Neighbour becomes better than threshold1 and the Aerial UE altitude becomes lower than a threshold2.

[0388] Conditional event A5H1: SpCell becomes worse than threshold1, neighbor becomes better than threshold2, and the Aerial UE altitude becomes higher than a threshold3.

[0389] Conditional event A5H2: SpCell becomes worse than threshold1, neighbor becomes better than threshold2, and the Aerial UE altitude becomes lower than a threshold3.

[0390] (5) Configure uplink synchronization in advance.

[0391] In some embodiments, the advance uplink synchronization configuration is used to configure advance uplink synchronization information for the terminal to perform advance uplink synchronization.

[0392] In some embodiments, after receiving the early uplink synchronization configuration, if the terminal needs to perform early uplink synchronization later, it will perform early uplink synchronization based on the early uplink synchronization configuration.

[0393] (6) Reference signal configuration.

[0394] In some embodiments, the reference signal configuration includes time-domain resources, frequency-domain resources, etc. of the reference signal, and the embodiments disclosed herein do not limit this.

[0395] In some embodiments, after receiving the reference signal configuration, the terminal can perform measurements based on the time-domain resources, frequency-domain resources, etc. indicated by the reference signal configuration to obtain the measurement results corresponding to the reference signal configuration.

[0396] (7) TCI information.

[0397] In some embodiments, after receiving the TCI information, the terminal can determine the TCI status of each cell and subsequently perform TCI status activation or deactivation.

[0398] (8) TA information of candidate cells.

[0399] In some embodiments, after receiving the TA information of the candidate cell, the terminal can perform advance synchronization based on the TA information.

[0400] It should be noted that the above mobility configurations may include multiple items, and the following describes the possible configurations.

[0401] For example, the mobility configuration includes configurations (2), (4) and (6). In this embodiment of the disclosure, after the terminal receives configurations (2), (4) and (8), it can determine the candidate cell with the mobility configuration, the execution conditions of the measurement, the reference signal configuration and the TA information of the candidate cell. The terminal can perform the measurement based on the reference signal configuration if the execution conditions are met.

[0402] For example, the mobility configuration includes configurations (2), (4), (6) and (8). In this embodiment of the present disclosure, after the terminal receives configurations (2), (4), (6) and (8), it can determine the candidate cell with the mobility configuration, the execution conditions of the measurement, the reference signal configuration, and the TA information of the candidate cell. The terminal can perform the measurement based on the reference signal configuration when the execution conditions are met, and perform advance synchronization based on the TA information when synchronization is required.

[0403] It should be noted that the embodiments disclosed herein are merely illustrative examples, and the mobility configuration may also include other configurations. The terminal can perform the corresponding operations according to the configuration. The embodiments disclosed herein do not limit the content included in the mobility configuration.

[0404] In some embodiments, the measurement configuration includes any one or more of the following measurement configurations:

[0405] (1) L1 measurement configuration.

[0406] (2) LTM measurement configuration.

[0407] (3) CSI measurement configuration.

[0408] (4) Beam measurement configuration.

[0409] (5) L3 measurement configuration.

[0410] (6) RRM measurement configuration.

[0411] In this embodiment of the disclosure, after receiving the measurement configuration, the terminal can perform measurements based on the measurement configuration. For example, if the terminal receives an L1 measurement configuration, it can perform L1 measurements based on the L1 measurement configuration. As another example, if the terminal receives an LTM measurement configuration, it can perform LTM measurements based on the LTM measurement configuration.

[0412] It should be noted that the above measurement configurations may include multiple options, and the following describes the possible configurations.

[0413] For example, the measurement configuration includes (3) and (6), wherein the terminal performs CSI measurement based on the CSI measurement configuration in (3) and performs RRM measurement based on the RRM measurement configuration in (6).

[0414] For example, the measurement configuration includes (1), (3) and (5), wherein the terminal performs L1 measurement based on the L1 measurement configuration in (1), performs CSI measurement based on the CSI measurement configuration in (3), and performs L3 measurement based on the L3 measurement configuration in (5).

[0415] It should be noted that the embodiments disclosed herein are merely illustrative examples, and the measurement configuration may also include other configurations. The terminal can perform the corresponding measurement according to the configuration. The embodiments disclosed herein do not limit the content included in the measurement configuration.

[0416] It should be noted that step S2101 in this embodiment can be executed once, and the terminal can subsequently perform operations multiple times based on mobility configuration and / or measurement configuration.

[0417] Step S2102: The network device sends the first configuration.

[0418] In some embodiments, the terminal receives a first configuration. Alternatively, the network device sends the first configuration to the terminal. Correspondingly, the terminal receives the first configuration sent by the network device.

[0419] In some embodiments, the first condition is used to instruct the terminal to filter candidate cells for mobility. Alternatively, the first condition can also be understood as used to instruct the terminal to filter candidate cells that may be used for mobility. Here, candidate cells that may be used for mobility refer to those that the terminal may not subsequently perform mobility operations on.

[0420] In some embodiments, the first configuration is used to configure a first condition.

[0421] Optionally, the first configuration includes at least one of the following:

[0422] (1) Configure identifiers.

[0423] In some embodiments, the configuration identifier is used to indicate a first configuration. Optionally, the network device configures a correspondence between the first configuration and the configuration identifier for the terminal, and the configuration identifier subsequently included in the first configuration indicates the first configuration.

[0424] (2) The first threshold value of the measurement results of the service cell.

[0425] (3) The second threshold value of the candidate cell measurement results.

[0426] (4) The third threshold value of the measurement results of the serving cell beam.

[0427] (5) The fourth threshold value of the beam measurement results of the candidate cell.

[0428] (6) Hysteresis value.

[0429] In some embodiments, the hysteresis value is used to delay for a certain period of time when it is determined that an event meets the entry condition, so as to prevent the exit condition from being met immediately when the entry condition of the event is met.

[0430] Optionally, if the first condition corresponds to a cell, then the hysteresis value is a cell-level hysteresis value. Optionally, if the first condition corresponds to a beam, then the hysteresis value is a beam-level hysteresis value.

[0431] (7) Triggering time.

[0432] In some embodiments, the trigger time refers to: if the entry condition of the event is met within the trigger time, the event is considered satisfied; if the exit condition of the event is met within the trigger time after the event is satisfied, the event is considered not satisfied.

[0433] Optionally, if the first condition corresponds to a cell, the triggering time is a cell-level triggering time. Optionally, if the first condition corresponds to a beam, the triggering time is a beam-level triggering time.

[0434] (8) Number of triggers.

[0435] In some embodiments, the trigger count refers to: if the event's entry condition is met X times within the trigger time, the event is considered satisfied; if the event's exit condition is met X times within the trigger time after the event is satisfied, the event is considered not satisfied. Alternatively, if the event's entry condition is met X times consecutively, the event is considered satisfied; if the event's exit condition is met X times consecutively after the event is satisfied, the event is considered not satisfied. Here, X is the trigger count.

[0436] Optionally, if the first condition corresponds to a cell, then the number of triggers is the cell-level trigger count. Optionally, if the first condition corresponds to a beam, then the number of triggers is the beam-level trigger count.

[0437] In some embodiments, the first condition is associated with one or more of the following:

[0438] Measurement results of the terminal's serving cell;

[0439] Measurement results of candidate cells for the terminal;

[0440] Measuring events;

[0441] Execution conditions for conditional mobility configuration.

[0442] Optionally, the following description relates the first condition to the measurement results of the terminal's serving cell and the measurement results of the terminal's candidate cells.

[0443] In some embodiments, the first condition includes at least one of the following:

[0444] (1) The measurement result of the serving cell of the terminal is less than the first threshold and the measurement result of the candidate cell of the terminal is greater than the second threshold.

[0445] (2) The beam measurement result of the serving cell is less than the third threshold and the beam measurement result of the candidate cell is greater than the fourth threshold.

[0446] (3) The beam measurement result of the candidate cell is greater than the fourth threshold value.

[0447] (4) The measurement result of the candidate cell is greater than the second threshold value.

[0448] (5) The measurement result of the service cell is less than the first threshold value.

[0449] (6) The measurement result of the serving cell beam is less than the third threshold value.

[0450] It should be noted that the execution order of steps S2101 and S2102 is not limited in this embodiment of the present disclosure, and step S2102 may also be executed before step S2101. Alternatively, the first configuration may be included in the measurement configuration or mobility configuration, and this embodiment of the present disclosure is not limited in this regard.

[0451] Another point to note is that in this embodiment of the disclosure, there may be a situation where the first condition is an associated measurement event or a condition corresponding to the mobility configuration. In this case, step S2102 can be omitted, and the first condition can be determined by the configuration in step S2101.

[0452] Optionally, the following description associates a first condition with a measurement event. In some embodiments, the first condition includes a measurement event. Optionally, the measurement event includes a measurement reporting event and / or a mobility event.

[0453] In some embodiments, the measurement event includes at least one of the following:

[0454] L3 incident;

[0455] RRM incident;

[0456] L1 incident;

[0457] LTM events;

[0458] CSI measurement events;

[0459] CSI reported the incident;

[0460] LTM's CSI event.

[0461] Optionally, the following description associates a first condition with the execution conditions of condition-based mobility configuration. In some embodiments, the first condition includes at least one of the following:

[0462] The execution conditions for condition-based mobility configuration must be met;

[0463] At least one event that satisfies the execution conditions associated with the condition-based mobility configuration;

[0464] An entry condition that satisfies the execution conditions associated with at least one event of the condition-based mobility configuration.

[0465] It should be noted that if the terminal meets the execution conditions for conditional mobility configuration, the mobility execution process is postponed.

[0466] It should be noted that the first condition in this embodiment is illustrated using network device configuration as an example. In another embodiment, however, the condition is not configured by the network device but is determined by the communication protocol, and this embodiment does not impose any limitations on this.

[0467] In this embodiment of the disclosure, if the terminal meets the execution conditions for conditional mobility configuration, an operation is requested to be performed on the cell that meets the execution conditions. Optionally, the operation includes at least one of the following:

[0468] (1) Candidate cells perform early downlink synchronization.

[0469] (2) The terminal performs one or more downlink TC states activation or selection for the candidate cell.

[0470] (3) The terminal performs one or more downlink beam activations or selections for candidate cells.

[0471] (4) The terminal obtains the TA value of the candidate cell.

[0472] (5) The terminal performs early uplink synchronization on the candidate cell.

[0473] (6) The terminal performs early RACH on the candidate cell.

[0474] (7) The terminal performs one or more uplink TCI status activations or selections for candidate cells.

[0475] (8) The terminal performs uplink beam activation or selection for one or more candidate cells.

[0476] It should be noted that the above eight operations can be triggered by instructions from the network device, for example, see step S2105. Alternatively, the terminal may determine the trigger itself, and this embodiment of the disclosure does not limit this.

[0477] In some embodiments, the terminal postpones the mobility execution process if a second condition is met; the second condition includes at least one of the following:

[0478] (1) The measurement result of the service cell is greater than the fifth threshold value.

[0479] (2) The events associated with the execution conditions of the candidate cells that meet the execution conditions are preset events.

[0480] (3) The terminal does not perform advance synchronization and / or TCI status activation or deactivation for candidate cells that meet the execution conditions.

[0481] (4) The terminal has performed early synchronization and / or TCI status activation or deactivation on candidate cells that meet the execution conditions, but the information obtained is invalid.

[0482] (5) The terminal did not obtain a valid TA value for a candidate cell that meets the execution conditions.

[0483] (6) The terminal has not activated the TCI state or beam of at least one candidate cell that meets the execution conditions.

[0484] For example, see Figure 2B, which illustrates how a terminal postpones mobility when it determines that the execution conditions are met.

[0485] Step S2201: The terminal determines that the candidate cell meets the execution conditions for condition-based mobility configuration.

[0486] In step S2202, the terminal determines that the candidate cell that meets the execution conditions of the condition-based mobility configuration satisfies the second condition.

[0487] Step S2203, the terminal postpones the mobility process and performs any one of the operations (1)-(8) in the above embodiments.

[0488] Step S2204: The terminal performs mobility for candidate cells that meet the mobility conditions.

[0489] It should be noted that the embodiments disclosed herein use the example of a candidate cell satisfying the execution conditions of condition-based mobility configuration. In another embodiment, the condition may also be an entry condition for at least one event associated with the execution conditions of condition-based mobility configuration or an entry condition for at least one event associated with the execution conditions of condition-based mobility configuration.

[0490] In this embodiment of the disclosure, while maintaining a connection available to the source cell, the terminal reduces the disruption of the mobility process by delaying mobility and performing early synchronization or TCI state activation or deactivation.

[0491] It should be noted that step S2102 in this embodiment can be executed once, and the terminal can subsequently determine multiple times whether to perform advance synchronization and / or TCI status activation or deactivation on the candidate cells of the condition-based mobility configuration based on the first condition.

[0492] Step S2103: The terminal determines that the first condition is met, and performs early synchronization and / or TCI state activation or deactivation on the candidate cells of the condition-based mobility configuration.

[0493] In some embodiments, the candidate cells for conditional mobility configuration include candidate cells that satisfy a first condition.

[0494] For example, perform early synchronization and / or TCI state activation or deactivation on candidate cells that meet the first condition.

[0495] In some embodiments, it should be noted that if the first condition is a serving cell condition, then the X cells with the best cell-level or beam-level measurement results, or cells with cell-level or beam-level measurement results greater than the sixth threshold, are selected. Alternatively, it can be understood as activating the X cells with the best cell-level or beam-level measurement results, or cells with cell-level or beam-level measurement results greater than the sixth threshold. Optionally, the X cells with the worst cell-level or beam-level measurement results, or cells with cell-level or beam-level measurement results less than the sixth threshold, are selected and deactivated.

[0496] In some embodiments, X is defined by network configuration or protocol.

[0497] In some embodiments, the conditions for implementing mobility configuration include at least one of the following:

[0498] (1) Execution conditions for L1 measurement.

[0499] (2) Execution conditions for LTM measurement.

[0500] (3) Conditions for performing CSI measurements.

[0501] (4) Execution conditions for beam measurement.

[0502] (5) Execution conditions for L3 measurement.

[0503] (6) Conditions for performing RRM measurements.

[0504] The execution conditions for this mobility configuration are similar to those in the above embodiments, and will not be repeated here.

[0505] In some embodiments, the terminal obtains the TA value of the first cell in at least one of the following ways:

[0506] Optionally, the terminal performs a TA measurement to obtain the TA value;

[0507] In some embodiments, the terminal may obtain the TA value of the first cell based on TA measurement.

[0508] Optionally, the terminal initiates an early RACH to obtain the TA value on the candidate cell.

[0509] In some embodiments, the terminal may initiate an early RACH on the first cell to obtain the TA value of the first cell.

[0510] Optionally, the terminal can obtain the uplink timing of the terminal in the first cell based on the downlink reception timing deviation between the first cell and the second cell, the uplink timing of the terminal in the second cell, and the downlink transmission time difference between the first cell and the second cell.

[0511] Where (TA_Cell_1) or 2 = (TA_Cell_2) or 2 + Rx_Diff - Tx_Diff. Where TA_Cell_1: the TA value of the first cell; TA_Cell_2: the TA value of the second cell; Rx_Diff: the downlink reception timing deviation between the first and second cells; Tx_Diff: the downlink transmission time difference between the first and second cells.

[0512] In some embodiments, the method by which the terminal activates or selects at least one downlink TCI state or beam of a candidate cell includes at least one of the following:

[0513] The terminal activates or selects at least one downlink TCI state or beam of a candidate cell based on the configuration of the network device.

[0514] In some embodiments, the network device is configured to indicate the activation or selection of at least one downlink TCI state or beam of the first cell.

[0515] In some embodiments, at least one downlink TCI state or beam of the first cell is activated or selected based on the configuration of the network device, including: the terminal activating or selecting at least one downlink TCI state or beam of the first cell based on the configuration of the network device.

[0516] It should be noted that the embodiments disclosed herein are illustrated by activating or selecting at least one downlink TCI state or beam of the first cell based on the configuration of the network device. In another embodiment, at least one downlink TCI state or beam of the first cell is deactivated or deleted based on the configuration of the network device.

[0517] In some embodiments, the network device configuration includes Candidate Cell TCI States Activation or Deactivation MAC CE or other configurations, which are not limited in this disclosure.

[0518] In some embodiments, the terminal activates or selects at least one downlink TCI state or beam of a candidate cell based on the measurement results.

[0519] In some embodiments, the measurement result is used to indicate the activation or selection of at least one downlink TCI state or beam of the first cell. Optionally, the measurement result refers to the measurement result of at least one downlink TCI state of the first cell. Optionally, the measurement result includes at least one of RSRQ, RSRP, or SINR, or may be other measurement results, which are not limited in this disclosure.

[0520] In some embodiments, at least one downlink TCI state or beam of the first cell is activated or selected based on measurement results, including: the terminal activating or selecting at least one downlink TCI state or beam of the first cell based on measurement results.

[0521] It should be noted that the embodiments disclosed herein are illustrated by activating or selecting at least one downlink TCI state or beam of the first cell based on measurement results. In another embodiment, at least one downlink TCI state or beam of the first cell is deactivated or deleted based on measurement results.

[0522] Optionally, the TCI state or beam with the best measurement results can be activated or selected. Alternatively, the TCI state or beam whose measurement results meet the network configuration conditions can be activated or selected. For example, if the network device configures a threshold value, the terminal can select or activate the TCI state or beam whose measurement results meet the threshold value requirements.

[0523] In some embodiments, the method by which the terminal activates or selects at least one uplink TCI state or beam of a candidate cell includes at least one of the following:

[0524] The terminal activates or selects at least one uplink TCI state or beam of a candidate cell based on the configuration of the network device.

[0525] The terminal activates or selects at least one uplink TCI state or beam of a candidate cell based on the measurement results.

[0526] The uplink TCI state or beam scheme is similar to the downlink TCI state or beam scheme in the above embodiments, and will not be described again here.

[0527] It should be noted that the embodiments disclosed herein are illustrated by example of the terminal directly executing step S2103. In another embodiment, the terminal may also send a request to the network device to request the network device to trigger early synchronization and / or TCI state activation or deactivation of candidate cells for conditional mobility configuration, as detailed in steps S2104-S2105.

[0528] Step S2104: The terminal determines that the first condition is met and sends the first request information to the network device.

[0529] In some embodiments, the first request information is used to request the network device to initiate early synchronization and / or TCI state activation or deactivation of candidate cells for conditional mobility configuration.

[0530] In some embodiments, the first request information includes at least one of the following:

[0531] (1) Instruction information.

[0532] In some embodiments, the indication information is used to instruct the terminal to perform an operation on a candidate cell for conditional mobility configuration. Optionally, the operation includes at least one of the following:

[0533] 1. Candidate cells will implement early downlink synchronization.

[0534] 2. The terminal activates or selects one or more downlink TC states for candidate cells.

[0535] 3. The terminal performs downlink beam activation or selection for one or more candidate cells.

[0536] 4. The terminal obtains the TA value of the candidate cell.

[0537] 5. The terminal performs early uplink synchronization for candidate cells.

[0538] 6. The terminal performs early RACH on the candidate cells.

[0539] 7. The terminal performs uplink TCI status activation or selection for one or more candidate cells.

[0540] 8. The terminal performs uplink beam activation or selection for one or more candidate cells.

[0541] (2) Candidate cell identifier.

[0542] In some embodiments, a candidate cell identifier is used to indicate the candidate cell.

[0543] (3) Candidate configuration identifier.

[0544] In some embodiments, the candidate configuration identifier is used to indicate the configuration of the candidate cell.

[0545] (4) At least one beam information.

[0546] In some embodiments, beam information is used to indicate the beam of the candidate cell. Optionally, (4) above can also be understood as including at least one beam information for performing activation or selection of the corresponding candidate cell, or at least one beam information corresponding to the TCI state or beam for performing activation or selection of the corresponding candidate cell.

[0547] (5) At least one TCI status information.

[0548] In some embodiments, TCI status information is used to indicate the TCI status of the candidate cell. Optionally, (5) above can also be understood as including at least one TCI status information for performing activation or selection of the corresponding candidate cell, or at least one TCI status information corresponding to the TCI status of performing activation or selection of the corresponding candidate cell or the beam.

[0549] (6) Community-level measurement results.

[0550] In some embodiments, cell-level measurement results are used to indicate the measurement results of candidate cells. Optionally, (6) above can also be understood as including cell-level measurement results of candidate cells corresponding to the operation, or cell-level measurement results corresponding to the TCI status or beam of candidate cells corresponding to the operation.

[0551] (7) At least one beam level measurement result.

[0552] In some embodiments, beam-level measurement results are used to indicate the measurement results of at least one beam of a candidate cell. The above (7) can also be understood as including at least one beam-level measurement result for performing activation or selection of the corresponding candidate cell, or at least one beam-level measurement result corresponding to the TCI state or beam of the candidate cell for performing activation or selection.

[0553] Step S2105: The network device triggers the terminal to perform advance synchronization and / or TCI state activation or deactivation on the candidate cells of the conditional mobility configuration based on the first request information.

[0554] In some embodiments, condition-triggered mobility includes at least one of the following:

[0555] (1) Condition switching;

[0556] (2) Conditional LTM;

[0557] (3) Condition PSCell changes;

[0558] (4) Add conditional PSCell;

[0559] (5) Condition SCell changes;

[0560] (6) Add conditional cells;

[0561] (7) Delete conditional cells;

[0562] (8) Mobility based on cell-level measurement results;

[0563] (9) Mobility based on beam-level measurement results;

[0564] (10) Mobility based on L1 measurement results;

[0565] (11) Mobility based on L3 measurement results.

[0566] In some embodiments, the names of information, etc., are not limited to the names described in the embodiments. Terms such as "information", "message", "signal", "signaling", "report", "configuration", "indication", "instruction", "command", "channel", "parameter", "domain", "field", "symbol", "symbol", "codebook", "codeword", "codepoint", "bit", "data", "program", and "chip" can be used interchangeably.

[0567] In some embodiments, “get,” “obtain,” “get,” “receive,” “transmit,” “bidirectional transmission,” and “send and / or receive” can be used interchangeably and can be interpreted as receiving from other entities, obtaining from protocols, obtaining from higher layers, obtaining through self-processing, or autonomous implementation, among other meanings.

[0568] In some embodiments, terms such as “send,” “transmit,” “report,” “distribute,” “transfer,” “bidirectional transmission,” “send and / or receive” can be used interchangeably.

[0569] In some embodiments, terms such as “moment,” “point in time,” “time,” and “time location” can be used interchangeably, as can terms such as “duration,” “segment,” “time window,” “window,” and “time.”

[0570] In some embodiments, terms such as "certain," "preset," "default," "set," "indicated," "a certain," "any," and "first" can be used interchangeably. "Certain A," "preset A," "default A," "set A," "indicated A," "a certain A," "any A," and "first A" can be interpreted as A pre-defined in a protocol or the like, or as A obtained through setting, configuration, or instruction, or as specific A, a certain A, any A, or first A, but are not limited thereto.

[0571] The signaling processing method involved in the embodiments of this disclosure may include at least one of steps S2101 to S2105. For example, step S2101 may be implemented as an independent embodiment, step S2102 may be implemented as an independent embodiment, step S2103 may be implemented as an independent embodiment, step S2104 may be implemented as an independent embodiment, step S2105 may be implemented as an independent embodiment, and at least two of steps S2101 to S2105 may be implemented as independent embodiments, but are not limited thereto.

[0572] In some embodiments, at least one of steps S2101-S2105 is optional, and one or more of these steps may be omitted or substituted in different embodiments.

[0573] In different embodiments, one or more of these steps may be omitted or substituted. In some embodiments, other alternative implementations may be described before or after the specification corresponding to FIG2A.

[0574] Figure 3A is a flowchart illustrating an advance synchronization method according to an embodiment of the present disclosure, applied to a terminal. As shown in Figure 3A, the embodiments of the present disclosure relate to an advance synchronization method, which includes:

[0575] In step S3101, the terminal determines that the first condition is met and performs early synchronization and / or TCI state activation or deactivation on the candidate cells of the condition-based mobility configuration.

[0576] The optional implementation of step S3101 can be found in the optional implementation of step S2103 in Figure 2A, and other related parts in the embodiments involved in Figure 2A, which will not be repeated here.

[0577] In step S3102, the terminal determines that the first condition is met and sends the first request information to the network device.

[0578] The optional implementation of step S3102 can be found in the optional implementation of step S2104 in Figure 2A, and other related parts in the embodiments involved in Figure 2A, which will not be repeated here.

[0579] The advance synchronization method disclosed in this embodiment may include at least one of steps S3101 to S3102. For example, step S3101 may be implemented as a separate embodiment, and step S3102 may be implemented as a separate embodiment, but is not limited thereto.

[0580] In some embodiments, at least one of steps S3101-S3102 is optional, and one or more of these steps may be omitted or substituted in different embodiments.

[0581] Figure 3B is a flowchart illustrating an advance synchronization method according to an embodiment of the present disclosure, applied to a terminal. As shown in Figure 3B, the embodiments of the present disclosure relate to an advance synchronization method, which includes:

[0582] Step S3201: The terminal determines that the first condition is met and performs early synchronization and / or TCI state activation or deactivation on the candidate cells of the condition-based mobility configuration.

[0583] The optional implementation of step S3201 can be found in step S2103 of Figure 2A and other related parts in the embodiments involved in Figure 2A, which will not be repeated here.

[0584] Figure 4A is a flowchart illustrating an advance synchronization method according to an embodiment of the present disclosure, applied to a network device. As shown in Figure 4A, the present disclosure relates to an advance synchronization method, which includes:

[0585] In step S4101, the network device sends a condition-triggered mobility configuration and / or measurement configuration.

[0586] The optional implementation of step S4101 can be found in step S2101 of Figure 2A and other related parts in the embodiments involved in Figure 2A, which will not be repeated here.

[0587] In some embodiments, the network device sends mobility configuration and / or measurement configuration to the terminal, but is not limited thereto, and may also send mobility configuration and / or measurement configuration to other entities.

[0588] Step S4102: The network device sends the first configuration.

[0589] Optional implementations of step S4102 can be found in step S2102 of Figure 2A and other related parts in the embodiments involved in Figure 2A, which will not be repeated here.

[0590] In step S4103, the network device triggers the terminal to perform advance synchronization and / or TCI state activation or deactivation on the candidate cells of the conditional mobility configuration based on the first request information.

[0591] Optional implementations of step S4103 can be found in step S2105 of Figure 2A and other related parts in the embodiments involved in Figure 2A, which will not be repeated here.

[0592] In some embodiments, the network device sends a first condition to the terminal, but is not limited thereto; it may also send the first condition to other entities.

[0593] The communication method involved in the embodiments of this disclosure may include at least one of steps S4101 to S4103. For example, step S4101 may be implemented as a separate embodiment, step S4102 may be implemented as a separate embodiment, and step S4103 may be implemented as a separate embodiment, but is not limited thereto.

[0594] In some embodiments, step S4101 is optional, and one or more of these steps may be omitted or substituted in different embodiments.

[0595] In some embodiments, step S4102 is optional, and one or more of these steps may be omitted or substituted in different embodiments.

[0596] In some embodiments, step S4103 is optional, and one or more of these steps may be omitted or substituted in different embodiments.

[0597] Figure 4B is a flowchart illustrating an advance synchronization method according to an embodiment of the present disclosure, applied to a network device. As shown in Figure 4B, the present disclosure relates to an advance synchronization method, which includes:

[0598] Step S4201: The network device sends the first configuration.

[0599] The optional implementation of step S4201 can be found in step S2102 of Figure 2A and other related parts in the embodiments involved in Figure 2A, which will not be repeated here.

[0600] Figure 5 is a flowchart illustrating an advance synchronization method according to an embodiment of the present disclosure. As shown in Figure 5, the present disclosure relates to an advance synchronization method, which includes:

[0601] Step S5101: The network device sends the first configuration.

[0602] Step S5102: The terminal determines that the first condition is met, and performs early synchronization and / or TCI state activation or deactivation on the candidate cells of the condition-based mobility configuration.

[0603] The optional implementation of step S5101 can be found in step S2102 of Figure 2A and other related parts in the embodiments involved in Figure 2A, which will not be repeated here.

[0604] The optional implementation of step S5102 can be found in step S2103 of Figure 2A and other related parts in the embodiments involved in Figure 2A, which will not be repeated here.

[0605] In some embodiments, the above methods may include the methods of the embodiments described above on the communication system side, terminal side, network device side, etc., which will not be repeated here.

[0606] Figure 6 is a flowchart illustrating an advance synchronization method according to an embodiment of the present disclosure. As shown in Figure 6, the present disclosure relates to an advance synchronization method, which includes:

[0607] Step S6101: For condition-triggered mobility, when the UE meets the first condition, the UE sends a request message to the network, requesting the network to initiate early synchronization and / or activate or deactivate the uplink or downlink TCI state.

[0608] In some embodiments, the first condition is a network-side configured activation condition, such as a threshold value for cell-level or beam-level measurement results of candidate cells configured on the network side.

[0609] In some embodiments, the first condition may be a measurement event, but the measurement event will not trigger the reporting of measurement results, but will only report indication information.

[0610] In some embodiments, the first condition may be associated with the execution conditions corresponding to the candidate cell, such as when the execution conditions of the candidate cell satisfy the UE sending a request to the network side, or when one of the events corresponding to the candidate cell is satisfied, or when the entry conditions of the event are satisfied, etc.

[0611] 1. Condition-triggered mobility configuration and / or corresponding measurement configuration configured for the terminal on the network side.

[0612] 1.1 The condition-triggered mobility configuration may include any one or more of the following: configuration identifier, candidate cell identifier (e.g., PCI), candidate configuration, execution condition configuration, early uplink synchronization configuration, reference signal configuration, TCI information, and TA information of the candidate cell.

[0613] 1.1.1 In some embodiments, the TA information of the candidate cell is included in the candidate configuration.

[0614] 1.2 In some embodiments, the condition-triggered mobility operation described in 1 includes, but is not limited to, any one or more of the following mobility operations.

[0615] 1.2.1 Conditional Toggle (CHO)

[0616] 1.2.2 Conditional LTM

[0617] 1.2.2.1 Includes one or more of the following: Conditional LTM for MCG or PCell, Conditional LTM for SCG or PSCell, and Conditional LTM for both MCG or PCell and SCG or PSCell.

[0618] 1.2.3 Conditional PSCell Change (CPC)

[0619] 1.2.4 Conditional PSCell Addition (CPAC)

[0620] 1.2.5 Changing, adding, or deleting condition cells

[0621] In some embodiments, the above-described condition-triggered mobility all support Subsequent Mobility.

[0622] 1.3 In some embodiments, the execution conditions corresponding to the condition-triggered mobility include one or more execution conditions based on measurements such as L1 measurement, LTM measurement, CSI measurement, beam measurement, L3 measurement, and RRM measurement.

[0623] Terminal 2 performs any one or more of the following operations on the candidate cells of the conditional mobility configuration described in section 1:

[0624] 2.1 The UE performs early downlink synchronization in the candidate cells.

[0625] 2.2 The UE performs one or more DL TCI state activations or selections for the candidate cell.

[0626] 2.2.1 For example, the DL TCI state can also be a joint TCI state.

[0627] 2.3 The UE performs one or more DL beam activations or selections for the candidate cells.

[0628] 2.4 The UE obtains the TA value of the candidate cell.

[0629] 2.5 The UE performs early uplink synchronization on the candidate cells.

[0630] 2.6 The UE performs early RACH on the candidate cells.

[0631] 2.7 The UE performs one or more UL TCI state activations or selections for the candidate cells.

[0632] 2.8 The UE performs one or more UL beam activations or selections for the candidate cells.

[0633] 3. Based on 2, the UE obtains the TA value of the candidate cell through any one or more of the following schemes.

[0634] 3.1 The UE performs TA measurement to obtain the TA value of the candidate cell.

[0635] 3.2 The UE obtains the TA value of the candidate cell by initiating an early RACH on the candidate cell.

[0636] 3.2.1 In some embodiments, in response to the UE receiving indication information (e.g., PDCCH order) sent by the network side (serving cell), the UE performs an early RACH procedure (CFRA-based Early RACH) and sends MSG1: Preamble to the candidate cell.

[0637] 3.2.2 For example, the PDCCH order is used to indicate RA Preamble assignment.

[0638] The above scheme can also be referred to as the UE performing advance uplink synchronization.

[0639] In some embodiments, the operations described in 2.4 to 2.6 may correspond to the same operation, and the above descriptions are merely different ways of describing such operations.

[0640] 4. Based on 2, the UE performing uplink synchronization can also be referred to as the UE acquiring the TA value of the candidate cell and / or the UE activating at least one uplink beam or at least one UL TCI state of the candidate cell.

[0641] 5. Based on 2, the UE performs one or more UL or DL ​​TCI states (UL or DL ​​beam) activation or selection of the candidate cell, which can be achieved through any one or more of the following schemes.

[0642] 5.1 The UE activates or selects at least one UL TCI state (DLTCI state) or UL beam (DL beam) of the candidate cell based on network-side configuration.

[0643] 5.1.1 In addition, the UE deactivates or deletes at least one UL TCI state (DL TCI state) or UL beam (DL beam) of the selected candidate cell based on network-side configuration.

[0644] 5.1.2 For example, the network-side configuration can be Candidate Cell TCI States Activation or Deactivation MAC CE

[0645] 5.2 The UE activates or selects at least one UL TCI state (DL TCI state) or UL beam (DL beam) of the candidate cell based on the measurement results, including any one or more of the following schemes:

[0646] 5.2.1 Activate or select the TCI state or beam with the best measurement results.

[0647] 5.2.2 Activate or select the TCI state or beam whose measurement results meet the network configuration conditions. For example, if the network side configures a threshold value, the UE selects or activates the TCI state or beam whose measurement results meet the threshold value requirements.

[0648] 6. Based on 1 to 5, the operation described in 2 can be triggered by any one or more of the following two schemes.

[0649] 6.1 The terminal triggers the relevant operations in step 2 based on the indication information from the network side.

[0650] 6.1.1 For example, the network side triggers the UE to perform early TA acquisition based on EarlyRACH by sending indication information (PDCCH Order).

[0651] 6.1.2 For example, the network side activates or deactivates the UL or DL ​​TCI states (UL or DL ​​beam) of candidate cells by sending indication information (Candidate Cell TCI States Activation or Deactivation MAC CE).

[0652] 6.2 Directly initiate related operations on the terminal

[0653] 6.2.1 For example, the UE obtains the TA value in advance through TA measurement.

[0654] 6.2.2 For example, the UE activates or selects at least one UL TCI state (DL TCI state) or UL beam (DL beam) of the candidate cell based on the measurement results, as described in 5.2.

[0655] 7. Based on any one of 1 to 2, 6, the terminal determines whether to perform the corresponding operation or request the network side to trigger the UE to perform the corresponding operation based on the first condition.

[0656] 7.1 Regarding the operation in section 2 triggered by the indication information from the network side as described in section 6.1, the terminal side determines whether to request the network side to trigger the UE to perform the corresponding operation based on the first condition;

[0657] 7.1.1 In response to the first condition being met, the UE sends a request message to the network, requesting the network to trigger the UE to perform the corresponding operation.

[0658] 7.2 For the terminal direct startup related operation scheme described in 6.2, the terminal side determines whether to execute (or start) the corresponding operation based on the first condition;

[0659] 7.2.1 In response to the first condition being met, the UE performs the corresponding operation.

[0660] The request message described in 8.7.1 contains any one or more of the following information (which can be indicated by explicit and / or implicit methods):

[0661] 8.1 Instruction information for the requested operation

[0662] 8.2 The candidate cell ID or candidate configuration ID corresponding to the operation performed.

[0663] 8.3 Execute activation or selection of one or more UL TCI states (DL TCI states) or UL beams (DL beams) corresponding to the candidate cells, using beam information or TCI state information, for example, indicated by the SSB-index.

[0664] 8.4 Cell-level measurement results of the candidate cells corresponding to the operation described in the previous section.

[0665] Measurement results corresponding to the beams described in 8.5 or 8.3 or the beams indicated in the TCI State.

[0666] In 9.7, the first condition can be any one or more of the following conditions:

[0667] 9.1 The parameters corresponding to the first condition are configured independently by the network side.

[0668] 9.1.1 Wherein, the configuration information of the first condition includes, threshold values ​​for the measurement results of the serving cell, threshold values ​​for the measurement results of the candidate cell, threshold values ​​for the measurement results of the serving cell's beam, threshold values ​​for the measurement results of the candidate cell's beam, hysteresis value, trigger time, number of triggers, etc.

[0669] The beams used to evaluate candidate cells can be configured by the network, or they can be all the beams of candidate cells that the UE can measure.

[0670] The beam used to evaluate the serving cell can be configured by the network, or it can be the serving cell's current beam.

[0671] 9.1.2 Based on the configuration in 8.1.1, the first condition can be:

[0672] 9.1.2.1 The measurement result of the serving cell is less than threshold 1 and the measurement result of the candidate cell is greater than threshold 2.

[0673] 9.1.2.2 The beam measurement result of the serving cell is less than threshold 1 and the beam measurement result of the candidate cell is greater than threshold 2.

[0674] 9.1.2.3 The beam measurement result of the candidate cell is greater than the threshold value 2.

[0675] 9.1.2.4 The measurement result of the candidate cell is greater than the threshold value 2, etc.

[0676] 9.2 The first condition corresponds to the measurement event.

[0677] 9.2.1 For example, the configuration of the first condition can be associated with a measurement event identifier, or an identifier related to the measurement configuration corresponding to the measurement event.

[0678] 9.2.2 For example, the measurement event associated with the first condition may share the same event as the measurement reporting event and / or mobility event, and the indication information indicates whether the event is used to configure the first condition.

[0679] 9.2.3 For example, the measurement event associated with the first condition may correspond to a different event than the measurement reporting event and / or mobility event, for example, a different event name.

[0680] 9.2.4 For example, the measurement event corresponding to the first condition does not trigger measurement reporting.

[0681] 9.2.4.1 If the measurement event corresponding to the first condition is met, then the corresponding operation is performed based on the description in 7, or the network side is requested to trigger the UE to perform the corresponding operation, instead of triggering measurement reporting.

[0682] 9.2.5 For example, the measurement event corresponding to the first condition can be an L3 event or an RRM event, such as any one or more of event A1, event A2, event A3, event A4, event A5, and event A6.

[0683] 9.2.6 For example, the measurement event corresponding to the first condition can be an L1 event, an LTM event, a CSI measurement event, a CSI reporting event, or an LTM CSI event, such as any one or more of event LTM2, event LTM3, event LTM4, and event LTM5.

[0684] - Event LTM2: Beam of serving cell becomes worse than absolute threshold;

[0685] - Event LTM3: Beam of candidate cell becomes amount of offset better than beam of serving cell;

[0686] - Event LTM4: Beam of candidate cell becomes better than absolute threshold;

[0687] - Event LTM5: Beam of serving cell becomes worse than absolute threshold1 AND Beam of candidate cell becomes better than another absolute threshold2.

[0688] 9.3 The first condition is associated with the mobility execution conditions corresponding to the candidate cell, including any one or more of the following:

[0689] 9.3.1 The first condition is that the UE meets the execution conditions of the candidate cell.

[0690] 9.3.2 The first condition is at least one event associated with the UE satisfying the execution conditions of the candidate cell.

[0691] 9.3.3 The first condition is an entry condition where the UE satisfies at least one event associated with the execution conditions of the candidate cell.

[0692] 10. For the first condition in 9.2, it corresponds to a measurement event, that is, when the UE measures that the first candidate cell satisfies the measurement event corresponding to triggering the operation described in 2, then...

[0693] 10.1 The UE sends a request message to the network, requesting the network to initiate the operation described in section 2 for the first candidate cell.

[0694] 10.2 The UE initiates the operation described in step 2 for the first candidate cell.

[0695] 11. Regarding the first condition in 9.3.1, it means that the UE meets the execution conditions of the candidate cell. That is, when the UE meets the mobility execution conditions of the first candidate cell, the UE can postpone the mobility execution process, request the network to trigger the operation described in step 2 for the first candidate cell, or the UE can initiate the operation described in step 2 for the first candidate cell, until the first candidate cell completes the corresponding operation, then the mobility process is triggered and the UE accesses the candidate cell.

[0696] 11.1 The UE will postpone the mobility procedure only if any one or more of the following conditions are met; otherwise, the mobility procedure to access the first candidate cell will be triggered after the first candidate cell meets the mobility execution conditions.

[0697] 11.1.1 The measurement result of the service cell is greater than the threshold value.

[0698] 11.1.1.1 For example, the cell-level measurement result of the serving cell is greater than a threshold value.

[0699] 11.1.1.2 For example, the measurement result of the current beam or indicated beam of the serving cell is greater than a threshold value.

[0700] 11.1.1.3 For example, the measurement results of the serving cell satisfy event A1

[0701] 11.1.1.4 For example, the measurement results of the serving cell satisfy the condition that the beam of serving cell becomes better than the absolute threshold;

[0702] 11.2 The event associated with the execution condition corresponding to the first candidate cell is any one or more of CondEvent A4, CondEventA3, Event LTM4, or Cond Event LTM4, EventLTM3, or Cond Event LTM3.

[0703] 11.3 When the UE has not performed the operation described in section 2 on the first candidate cell

[0704] 11.3.1 For example, within a specific time period before the execution conditions are met, the UE has not performed the operation described in section 2 on the first candidate cell.

[0705] 11.4 The UE performed the operation described in section 2 on the first candidate cell, but the information obtained has expired.

[0706] 11.5 The UE does not have a valid TA value for the first candidate cell.

[0707] 11.6 The UE has not activated at least one or more first candidate cell UL or DL ​​TCI States (UL or DL ​​beams).

[0708] As described in 12.11, after the UE meets the mobility execution conditions of the first candidate cell, it postpones the mobility process, and there are the following schemes.

[0709] 12.1 The UE determines the duration for performing the operation described in section 2 after the mobility execution conditions are met based on a first timer. When the UE meets the mobility execution conditions of the first candidate cell, the UE starts the first timer. When the UE completes the operation described in section 2, the UE stops the first timer and performs the mobility procedure (e.g., a RACH-less mobility procedure, using the TA value obtained through the operation described in section 2). If the first timer times out, the UE performs the mobility procedure (RACH-based mobility procedure).

[0710] 13. Based on 8, the configuration information (or indication information) corresponding to the first condition is included in the condition-triggered mobility configuration described in 1.1, or the configuration information (or indication information) corresponding to the first condition may also be included in the mobility-related measurement configuration.

[0711] One of the first conditions is associated with one or more candidate cells (or a candidate cell configuration); or a general first condition can be configured that applies to all candidate cells based on condition-triggered mobility.

[0712] In the embodiments disclosed herein, some or all of the steps and their optional implementations may be arbitrarily combined with some or all of the steps in other embodiments, or may be arbitrarily combined with the optional implementations in other embodiments.

[0713] This disclosure also provides an apparatus for implementing any of the above methods. For example, an apparatus is provided that includes units or modules for implementing the steps performed by the terminal in any of the above methods. Alternatively, another apparatus is provided that includes units or modules for implementing the steps performed by a network device (e.g., an access network device, a core network functional node, a core network device, etc.) in any of the above methods.

[0714] It should be understood that the division of units or modules in the above device is only a logical functional division. In actual implementation, they can be fully or partially integrated into a single physical entity, or they can be physically separated. Furthermore, the units or modules in the device can be implemented by a processor calling software: for example, the device includes a processor connected to a memory containing instructions. The processor calls the instructions stored in the memory to implement any of the above methods or to implement the functions of the units or modules in the above device. The processor can be, for example, a general-purpose processor, such as a Central Processing Unit (CPU) or a microprocessor, and the memory can be internal or external to the device. Alternatively, the units or modules in the device can be implemented in the form of hardware circuits. The functionality of some or all of the units or modules can be achieved through the design of these hardware circuits, which can be understood as one or more processors. For example, in one implementation, the hardware circuit is an application-specific integrated circuit (ASIC). The functionality of some or all of the units or modules is achieved through the design of the logical relationships between the components within the circuit. In another implementation, the hardware circuit can be implemented using a programmable logic device (PLD). Taking a field-programmable gate array (FPGA) as an example, it can include a large number of logic gates. The connection relationships between the logic gates are configured through configuration files, thereby achieving the functionality of some or all of the units or modules. All units or modules of the above device can be implemented entirely through processor-called software, entirely through hardware circuits, or partially through processor-called software with the remaining parts implemented through hardware circuits.

[0715] In this embodiment, the processor is a circuit with signal processing capabilities. In one implementation, the processor can be a circuit with instruction read and execute capabilities, such as a Central Processing Unit (CPU), a microprocessor, a graphics processing unit (GPU) (which can be understood as a microprocessor), or a digital signal processor (DSP). In another implementation, the processor can implement certain functions through the logical relationships of hardware circuits. The logical relationships of the aforementioned hardware circuits are fixed or reconfigurable. For example, the processor is a hardware circuit implemented using an application-specific integrated circuit (ASIC) or a programmable logic device (PLD), such as an FPGA. In a reconfigurable hardware circuit, the process of the processor loading a configuration document and configuring the hardware circuit can be understood as the process of the processor loading instructions to implement the functions of some or all of the above units or modules. Furthermore, it can also be a hardware circuit designed for artificial intelligence, which can be understood as an ASIC, such as a Neural Network Processing Unit (NPU), a Tensor Processing Unit (TPU), or a Deep Learning Processing Unit (DPU).

[0716] Figure 7A is a schematic diagram of the terminal structure proposed in an embodiment of this disclosure. As shown in Figure 7A, the terminal 7100 may include at least one of a transceiver module 7101, a processing module 7102, etc. In some embodiments, the processing module 7102 is used to determine that a first condition is met, and the terminal performs early synchronization and / or TCI state activation or deactivation on candidate cells for conditional mobility configuration. Optionally, the transceiver module is used to perform at least one of the communication steps such as sending and / or receiving performed by the terminal 101 in any of the above methods, which will not be described in detail here. Optionally, the processing module is used to perform at least one of the other steps performed by the terminal 101 in any of the above methods, which will not be described in detail here.

[0717] Optionally, the processing module 7101 is used to perform at least one of the communication steps, such as the processing performed by the terminal in any of the above methods, which will not be described in detail here.

[0718] Figure 7B is a schematic diagram of the network device proposed in an embodiment of this disclosure. As shown in Figure 7B, the network device 7200 may include at least one of a transceiver module 7201, a processing module 7202, etc. In some embodiments, the transceiver module 7201 is used to transmit a first configuration, the first configuration being used to configure a first condition, wherein the first condition is used to perform early synchronization and / or TCI state activation or deactivation on candidate cells of condition-based mobility configuration when the terminal satisfies the condition. Optionally, the transceiver module is used to perform at least one of the communication steps such as transmission and / or reception performed by the network device 102 in any of the above methods, which will not be described in detail here.

[0719] Optionally, the processing module 7201 is used to perform at least one of the communication steps, such as the processing performed by the network device in any of the above methods, which will not be described in detail here.

[0720] In some embodiments, the transceiver module may include a transmitting module and / or a receiving module, which may be separate or integrated. Optionally, the transceiver module may be interchangeable with a transceiver.

[0721] In some embodiments, the processing module may be a single module or may include multiple sub-modules. Optionally, the multiple sub-modules may each perform all or part of the steps required by the processing module. Optionally, the processing module may be interchangeable with a processor.

[0722] Figure 8A is a schematic diagram of the structure of the communication device 8100 proposed in an embodiment of this disclosure. The communication device 8100 can be a network device (e.g., access network device, core network device, etc.), a terminal (e.g., user equipment, etc.), a chip, chip system, or processor that supports the network device in implementing any of the above methods, or a chip, chip system, or processor that supports the terminal in implementing any of the above methods. The communication device 8100 can be used to implement the methods described in the above method embodiments; for details, please refer to the descriptions in the above method embodiments.

[0723] As shown in Figure 8A, the communication device 8100 includes one or more processors 8101. The processor 8101 can be a general-purpose processor or a dedicated processor, such as a baseband processor or a central processing unit (CPU). The baseband processor can be used to process communication protocols and communication data, while the CPU can be used to control communication devices (e.g., base stations, baseband chips, terminal devices, terminal device chips, DUs or CUs, etc.), execute programs, and process program data. The communication device 8100 is used to execute any of the above methods.

[0724] In some embodiments, the communication device 8100 further includes one or more memories 8102 for storing instructions. Optionally, all or part of the memories 8102 may also be located outside the communication device 8100.

[0725] In some embodiments, the communication device 8100 further includes one or more transceivers 8103. When the communication device 8100 includes one or more transceivers 8103, the transceivers 8103 perform at least one of the communication steps such as sending and / or receiving in the above method (e.g., steps S2101, S2102, S2103, S2104, but not limited thereto).

[0726] In some embodiments, a transceiver may include a receiver and / or a transmitter, which may be separate or integrated. Optionally, the terms transceiver, transceiver unit, transceiver, transceiver circuit, etc., may be used interchangeably; the terms transmitter, transmitting unit, transmitter, transmitting circuit, etc., may be used interchangeably; and the terms receiver, receiving unit, receiver, receiving circuit, etc., may be used interchangeably.

[0727] In some embodiments, the communication device 8100 may include one or more interface circuits 8104. Optionally, the interface circuit 8104 is connected to the memory 8102, and the interface circuit 8104 can be used to receive signals from the memory 8102 or other devices, and can be used to send signals to the memory 8102 or other devices. For example, the interface circuit 8104 can read instructions stored in the memory 8102 and send the instructions to the processor 8101.

[0728] The communication device 8100 described in the above embodiments may be a network device or a terminal, but the scope of the communication device 8100 described in this disclosure is not limited thereto, and the structure of the communication device 8100 may not be limited by FIG8A. The communication device may be a standalone device or may be part of a larger device. For example, the communication device may be: (1) a standalone integrated circuit IC, or chip, or chip system or subsystem; (2) a collection of one or more ICs, optionally, the IC collection may also include storage components for storing data and programs; (3) an ASIC, such as a modem; (4) a module that can be embedded in other devices; (5) a receiver, terminal device, smart terminal device, cellular phone, wireless device, handheld device, mobile unit, vehicle device, network device, cloud device, artificial intelligence device, etc.; (6) others, etc.

[0729] Figure 8B is a schematic diagram of the structure of chip 8200 according to an embodiment of this disclosure. For cases where the communication device 8100 can be a chip or a chip system, please refer to the schematic diagram of chip 8200 shown in Figure 8B, but it is not limited thereto.

[0730] Chip 8200 includes one or more processors 8201, which are used to perform any of the above methods.

[0731] In some embodiments, chip 8200 further includes one or more interface circuits 8202. Optionally, the interface circuit 8202 is connected to memory 8203, and the interface circuit 8202 can be used to receive signals from memory 8203 or other devices, and the interface circuit 8202 can be used to send signals to memory 8203 or other devices. For example, the interface circuit 8202 can read instructions stored in memory 8203 and send the instructions to processor 8201.

[0732] In some embodiments, the interface circuit 8202 performs at least one of the communication steps such as sending and / or receiving in the above method, and the processor 8201 performs at least one of the other steps.

[0733] In some embodiments, the terms interface circuit, interface, transceiver pin, transceiver, etc., can be used interchangeably.

[0734] In some embodiments, chip 8200 further includes one or more memories 8203 for storing instructions. Optionally, all or part of the memories 8203 may be located outside of chip 8200.

[0735] This disclosure also proposes a storage medium storing instructions that, when executed on a communication device 8100, cause the communication device 8100 to perform any of the above methods. Optionally, the storage medium is an electronic storage medium. Optionally, the storage medium is a computer-readable storage medium, but not limited thereto; it may also be a storage medium readable by other devices. Optionally, the storage medium may be a non-transitory storage medium, but not limited thereto; it may also be a temporary storage medium.

[0736] This disclosure also provides a program product that, when executed by the communication device 8100, causes the communication device 8100 to perform any of the above methods. Optionally, the program product is a computer program product.

[0737] This disclosure also proposes a computer program that, when run on a computer, causes the computer to perform any of the above methods.

Claims

1. A method for advance synchronization, characterized in that, The method is executed by a terminal, and the method includes: Once the first condition is met, the terminal performs advance synchronization and / or TCI state activation or deactivation on the candidate cells of the condition-based mobility configuration.

2. The method according to claim 1, characterized in that, The determination that the first condition is met, and the terminal performing early synchronization and / or TCI state activation or deactivation on the candidate cells of the condition-based mobility configuration, includes: Once the first condition is met, a first request message is sent to the network device. The first request message is used to request the network device to trigger the terminal to perform early synchronization and / or TCI state activation or deactivation on the candidate cells of the condition-based mobility configuration.

3. The method according to claim 2, characterized in that, The first request information includes at least one of the following: Instruction information, the instruction information being used to instruct the terminal to perform operations on candidate cells based on conditional mobility configuration; Candidate cell identifier, which is used to indicate the candidate cell; Candidate configuration identifier, which is used to indicate the configuration of the candidate cell; At least one beam information, the beam information being used to indicate the beam of the candidate cell; At least one TCI status information, the TCI status information being used to indicate the TCI status of the candidate cell; Cell-level measurement results, which are used to indicate the measurement results of the candidate cells; At least one beam-level measurement result, which is used to indicate the measurement result of at least one beam of the candidate cell.

4. The method according to any one of claims 1 to 3, characterized in that, The first condition is associated with one or more of the following: Measurement results of the terminal's serving cell; Measurement results of candidate cells for the terminal; Measuring events; Execution conditions for conditional mobility configuration.

5. The method according to any one of claims 1 to 4, characterized in that, The first condition includes at least one of the following: The measurement result of the serving cell of the terminal is less than the first threshold and the measurement result of the candidate cell is greater than the second threshold; The beam measurement result of the serving cell is less than the third threshold and the beam measurement result of the candidate cell is greater than the fourth threshold. The beam measurement result of the candidate cell is greater than the fourth threshold value; The measurement result of the candidate cell is greater than the second threshold value; The measurement result of the serving cell is less than the first threshold value; The measurement result of the beam of the serving cell is less than the third threshold value.

6. The method according to claim 5, characterized in that, The method further includes: Receive a first configuration sent by a network device, the first configuration being used to configure the first condition.

7. The method according to claim 6, characterized in that, The first configuration includes at least one of the following: A configuration identifier, which is used to indicate the first configuration; The first threshold value of the measurement results for the service area; The second threshold value for candidate cell measurement results; The third threshold value of the measurement results of the serving cell's beam; The fourth threshold value of the beam measurement results for the candidate cell; Hysteresis value; Trigger time; Number of triggers.

8. The method according to any one of claims 1 to 4, characterized in that, The first condition includes a measurement event.

9. The method according to claim 8, characterized in that, The measurement events include measurement reporting events and / or mobility events.

10. The method according to claim 8 or 9, characterized in that, The measurement event includes at least one of the following: L3 incident; RRM incident; L1 incident; LTM events; CSI measurement events; CSI reported the incident; LTM's CSI event.

11. The method according to any one of claims 1 to 4, characterized in that, The first condition includes at least one of the following: The execution conditions for condition-based mobility configuration must be met; At least one event that satisfies the execution conditions associated with the condition-based mobility configuration; An entry condition that satisfies the execution conditions associated with at least one event of the condition-based mobility configuration.

12. The method according to claim 11, characterized in that, The method further includes: The terminal meets the execution conditions for conditional mobility configuration, thus delaying the mobility execution process.

13. The method according to claim 12, characterized in that, The terminal postpones the mobility execution process if a second condition is met; the second condition includes at least one of the following: The measurement result of the service cell is greater than the fifth threshold value; The events associated with the execution conditions of candidate cells that meet the execution conditions are preset events; The terminal failed to perform advance synchronization and / or TCI status activation or deactivation for candidate cells that met the execution conditions; The terminal has performed advance synchronization and / or TCI status activation or deactivation on candidate cells that meet the execution conditions, but the information obtained is invalid. The terminal did not obtain a valid TA value for a candidate cell that met the execution conditions; The terminal has not activated the TCI state or beam of at least one candidate cell that meets the execution conditions.

14. The method according to any one of claims 1 to 13, characterized in that, Perform early synchronization and / or TCI state activation or deactivation on candidate cells for conditional mobility configuration, including: The terminal performs early downlink synchronization on the candidate cells; The terminal activates or selects at least one downlink TCI state of the candidate cell; The terminal activates or selects at least one downlink beam of the candidate cell; The terminal acquires the TA value of the candidate cell; The terminal performs early uplink synchronization on the candidate cells; The terminal performs early RACH on the candidate cells; The terminal activates or selects at least one uplink TCI state of the candidate cell; The terminal activates or selects at least one uplink beam of the candidate cell.

15. The method according to claim 14, characterized in that, The terminal obtains the TA value of the first cell in at least one of the following ways: The terminal performs a TA measurement to obtain the TA value; The terminal initiates an early RACH on the candidate cell to obtain the TA value.

16. The method according to claim 15, characterized in that, The method by which the terminal activates or selects at least one downlink TCI state or beam of the candidate cell includes at least one of the following: The terminal activates or selects at least one downlink TCI state or beam of the candidate cell based on the configuration of the network device. The terminal activates or selects at least one downlink TCI state or beam of the candidate cell based on the measurement results.

17. The method according to claim 15, characterized in that, The method by which the terminal activates or selects at least one uplink TCI state or beam of the candidate cell includes at least one of the following: The terminal activates or selects at least one uplink TCI state or beam of the candidate cell based on the configuration of the network device. The terminal activates or selects at least one uplink TCI state or beam of the candidate cell based on the measurement results.

18. The method according to any one of claims 1 to 17, characterized in that, The candidate cells for the conditional mobility configuration include candidate cells that satisfy the first condition.

19. The method according to any one of claims 1 to 18, characterized in that, The method further includes: Receive condition-triggered mobility configuration and / or measurement configuration.

20. The method according to claim 19, characterized in that, The mobility configuration includes at least one of the following: Configuration identifier; Candidate community identifier; Candidate configurations; Execution condition configuration; Configure upstream synchronization in advance; Reference signal configuration; TCI information; TA information for candidate cells.

21. The method according to any one of claims 1 to 20, characterized in that, The conditions for the mobility configuration include at least one of the following: The execution conditions for L1 measurement; Conditions for performing LTM measurements; Conditions for performing CSI measurements; Execution conditions for beam measurement; Execution conditions for L3 measurement; Conditions for performing RRM measurements.

22. A method for advance synchronization, characterized in that, The method is performed by a network device, and the method includes: Send a first configuration, which is used to configure a first condition, which is used to perform early synchronization and / or TCI state activation or deactivation on candidate cells of condition-based mobility configuration when the terminal meets the condition.

23. The method according to claim 22, characterized in that, The method further includes: The receiving terminal sends a first request message, which is used to request the network device to trigger the terminal to perform early synchronization and / or TCI state activation or deactivation on candidate cells of conditional mobility configuration.

24. The method according to claim 23, characterized in that, The first request information includes at least one of the following: Instruction information, the instruction information being used to instruct the terminal to perform operations on candidate cells based on conditional mobility configuration; Candidate cell identifier, which is used to indicate the candidate cell; Candidate configuration identifier, which is used to indicate the configuration of the candidate cell; At least one beam information, the beam information being used to indicate the beam of the candidate cell; At least one TCI status information, the TCI status information being used to indicate the TCI status of the candidate cell; Cell-level measurement results, which are used to indicate the measurement results of the candidate cells; At least one beam-level measurement result, which is used to indicate the measurement result of at least one beam of the candidate cell.

25. The method according to any one of claims 22 to 24, characterized in that, The first condition is associated with one or more of the following: Measurement results of the terminal's serving cell; Measurement results of candidate cells for the terminal; Measuring events; Execution conditions for conditional mobility configuration.

26. The method according to any one of claims 22 to 25, characterized in that, The first condition includes at least one of the following: The measurement result of the serving cell of the terminal is less than the first threshold and the measurement result of the candidate cell is greater than the second threshold; The beam measurement result of the serving cell is less than the third threshold and the beam measurement result of the candidate cell is greater than the fourth threshold. The beam measurement result of the candidate cell is greater than the fourth threshold value; The measurement result of the candidate cell is greater than the second threshold value; The measurement result of the serving cell is less than the first threshold value; The measurement result of the beam of the serving cell is less than the third threshold value.

27. The method according to claim 26, characterized in that, The method further includes: Send a first configuration to the terminal, the first configuration being used to configure the first condition.

28. The method according to claim 27, characterized in that, The first configuration includes at least one of the following: A configuration identifier, which is used to indicate the first configuration; The first threshold value of the measurement results for the service area; The second threshold value for candidate cell measurement results; The third threshold value of the measurement results of the serving cell's beam; The fourth threshold value of the beam measurement results for the candidate cell; Hysteresis value; Trigger time; Number of triggers.

29. The method according to any one of claims 22 to 25, characterized in that, The first condition corresponds to the measurement event.

30. The method according to claim 29, characterized in that, The measurement events include measurement reporting events and / or mobility events.

31. The method according to claim 29 or 30, characterized in that, The measurement event includes at least one of the following: L3 incident; RRM incident; L1 incident; LTM events; CSI measurement events; CSI reported the incident; LTM's CSI event.

32. The method according to any one of claims 22 to 25, characterized in that, The first condition includes at least one of the following: The execution conditions for condition-based mobility configuration must be met; At least one event that satisfies the execution conditions associated with the condition-based mobility configuration; An entry condition that satisfies the execution conditions associated with at least one event of the condition-based mobility configuration.

33. The method according to claim 32, characterized in that, The mobility execution process is postponed if the terminal meets the execution conditions of the condition-based mobility configuration.

34. The method according to claim 33, characterized in that, The mobility execution process is postponed if a second condition is met; the second condition includes at least one of the following: The measurement result of the service cell is greater than the fifth threshold value; The events associated with the execution conditions of candidate cells that meet the execution conditions are preset events; The terminal failed to perform advance synchronization and / or TCI status activation or deactivation for candidate cells that met the execution conditions; The terminal has performed advance synchronization and / or TCI status activation or deactivation on candidate cells that meet the execution conditions, but the information obtained is invalid. The terminal did not obtain a valid TA value for a candidate cell that met the execution conditions; The terminal has not activated the TCI state or beam of at least one candidate cell that meets the execution conditions.

35. The method according to any one of claims 22 to 34, characterized in that, Perform early synchronization and / or TCI state activation or deactivation on candidate cells for conditional mobility configuration, including: The terminal performs early downlink synchronization on the candidate cells; The terminal activates or selects at least one downlink TCI state of the candidate cell; The terminal activates or selects at least one downlink beam of the candidate cell; The terminal acquires the TA value of the candidate cell; The terminal performs early uplink synchronization on the candidate cells; The terminal performs early RACH on the candidate cells; The terminal activates or selects at least one uplink TCI state of the candidate cell; The terminal activates or selects at least one uplink beam of the candidate cell.

36. The method according to claim 35, characterized in that, The terminal obtains the TA value of the first cell in at least one of the following ways: The terminal performs a TA measurement to obtain the TA value; The terminal initiates an early RACH on the candidate cell to obtain the TA value.

37. The method according to claim 36, characterized in that, The method by which the terminal activates or selects at least one downlink TCI state or beam of the candidate cell includes at least one of the following: The terminal activates or selects at least one downlink TCI state or beam of the candidate cell based on the configuration of the network device. The terminal activates or selects at least one downlink TCI state or beam of the candidate cell based on the measurement results.

38. The method according to claim 36, characterized in that, The method by which the terminal activates or selects at least one uplink TCI state or beam of the candidate cell includes at least one of the following: The terminal activates or selects at least one uplink TCI state or beam of the candidate cell based on the configuration of the network device. The terminal activates or selects at least one uplink TCI state or beam of the candidate cell based on the measurement results.

39. The method according to any one of claims 22 to 38, characterized in that, The candidate cells for the conditional mobility configuration include candidate cells that satisfy the first condition.

40. The method according to any one of claims 22 to 39, characterized in that, The method further includes: Send condition-triggered mobility configuration and / or measurement configuration.

41. The method according to claim 40, characterized in that, The mobility configuration includes at least one of the following: Configuration identifier; Candidate community identifier; Candidate configurations; Execution condition configuration; Configure upstream synchronization in advance; Reference signal configuration; TCI information; TA information for candidate cells.

42. The method according to any one of claims 22 to 41, characterized in that, The conditions for the mobility configuration include at least one of the following: The execution conditions for L1 measurement; Conditions for performing LTM measurements; Conditions for performing CSI measurements; Execution conditions for beam measurement; Execution conditions for L3 measurement; Conditions for performing RRM measurements.

43. A pre-synchronization device, characterized in that, The advance synchronization device includes: The processing module is used to determine that a first condition is met, and the terminal performs advance synchronization and / or TCI state activation or deactivation on candidate cells for condition-based mobility configuration.

44. A pre-synchronization device, characterized in that, The advance synchronization device includes: The transceiver module is used to send a first configuration, which is used to configure a first condition. The first condition is used to perform early synchronization and / or TCI state activation or deactivation on candidate cells of condition-based mobility configuration when the terminal meets the condition.

45. A terminal, characterized in that, The terminal includes: One or more processors; The terminal is used to execute the advance synchronization method according to any one of claims 1 to 21.

46. ​​A network device, characterized in that, The network device includes: One or more processors; The network device is used to perform the advance synchronization method according to any one of claims 22 to 42.

47. A communication system, characterized in that, The device includes a terminal and a network device, wherein the terminal is configured to implement the advance synchronization method according to any one of claims 1 to 21, and the network device is configured to implement the advance synchronization method according to any one of claims 22 to 42.

48. A storage medium storing instructions, characterized in that, When the instruction is executed on the communication device, the communication device performs the advance synchronization method as described in any one of claims 1 to 21, or performs the advance synchronization method as described in any one of claims 22 to 42.

49. A computer program product, characterized in that, When the computer program product is run on a communication device, it causes the communication device to perform the feature indication method as described in any one of claims 1 to 42.

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