A method and apparatus in a communication node used for wireless communication

Abstract

The application discloses a method and device used in a communication node for wireless communication. The communication node receives a first RRC message, the first RRC message comprising configuration information of a first candidate cell; the first candidate cell is a candidate of a first serving cell, and the configuration information of the first candidate cell comprises a target configuration and a first condition; initiates a first process; the first process comprises initiating random access on the first candidate cell, and the initiation of the first process depends on at least one of measurement or a first timer not running; or, the first process comprises starting UE-based timing advance measurement, and the initiation of the first process depends on at least the former of measurement and a first timer not running. The scheme provided by the application is beneficial to the enhancement of the triggering of early uplink synchronization of conditional LTM, the TA acquisition of early uplink synchronization of conditional LTM, and the improvement of the robustness of the handover process.

Description

A method and apparatus for use in a communication node for wireless communication

[0001] This application claims priority to a Chinese patent application filed with the Patent Office of China on February 5, 2024, with application number 202410162269.3 and invention name “A method and device in a communication node used for wireless communication”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to a transmission method and apparatus in a wireless communication system, and in particular to a triggering method and apparatus for early uplink synchronization. Background Art

[0003] With the continuous development of wireless communications, the requirements for mobility, transmission latency, and system capacity are becoming increasingly stringent. 3GPP has completed the standardization of Layer 1 (Layer 1) / Layer 2 (Layer 2) Triggered Mobility (LTM) through the "Further NR mobility enhancements" work item (WI). To further enhance mobility, conditional LTM, or inter-CU LTM, has become a key research topic in 3GPP Release 19.

[0004] On the other hand, 3GPP will further enhance some key technologies in its future evolution. For example, it will apply AI (Artificial Intelligence) or ML (Machine Learning) to mobility to improve mobility performance; and further study Network Energy Saving (NES) to reduce the impact on the environment.

[0005] To enhance the LTM process, LTM supports early uplink synchronization. The serving cell triggers random access on an LTM candidate cell using a PDCCH order. After the UE sends a preamble on the LTM candidate cell, it does not receive a RAR on the LTM candidate cell. The serving cell sends the candidate cell's TA to the UE using an LTM Cell Switch Command MAC CE. Given that early uplink synchronization can significantly reduce handover latency, applying early uplink synchronization to conditional LTM, inter-CU LTM, CHO, or CPC has promising prospects for standardization. Summary of the Invention

[0006] Through research, the inventors found that the existing early uplink synchronization relies on LTM Cell Switch Command MAC CE, which is difficult to apply to conditional LTM. On the one hand, in conditional LTM, if the network configures the LTM candidate cells and the corresponding switching conditions, and the UE triggers LTM based on measurements, the UE cannot obtain the TA of the LTM candidate cells through the LTM Cell Switch Command MAC CE. On the other hand, due to the uncertainty of the cell switching time of conditional LTM, too early early uplink synchronization timing may lead to a decrease in TA accuracy during LTM cell switching; too late early uplink synchronization timing may make it difficult to obtain the TA in time before the LTM cell switching. Therefore, it is necessary to enhance the triggering of early uplink synchronization of conditional LTM.

[0007] To address the above issues, this application provides a solution. While the NR system is used as an example in the description of the above issues, this application is also applicable to scenarios such as LTE (Long-Term Evolution), LTE-A (Long-Term Evolution Advanced), or future 6G systems, achieving technical effects similar to those of the NR system. Furthermore, although this application provides specific implementations for the 3GPP system, it can also be used in non-3GPP system scenarios, achieving technical effects similar to those of the 3GPP system. Furthermore, adopting a unified design solution for different scenarios can also help reduce hardware complexity and cost. Furthermore, although this application is initially intended for the Uu air interface, it can also be used for the PC5 interface, achieving technical effects similar to those of the Uu air interface. Furthermore, although this application is initially intended for conditional LTM, it can also be used for LTM, CHO, CPC, or SCPAC, achieving technical effects similar to those of conditional LTM. Furthermore, although the original intention of this application is for the terminal and base station scenario, this application is also applicable to the V2X (Vehicle-to-Everything, Internet of Vehicles) scenario, the communication scenario between the terminal and the relay, and the relay and the base station, to achieve similar technical effects in the terminal and base station scenario. Furthermore, although the original intention of this application is for the terminal and base station scenario, this application is also applicable to the IAB (Integrated Access and Backhaul, integrated access and backhaul) communication scenario, to achieve similar technical effects in the terminal and base station scenario. Furthermore, although the original intention of this application is for the terrestrial network (TN) scenario, this application is also applicable to the non-terrestrial network (NTN) communication scenario, to achieve similar technical effects in the TN scenario. In addition, the use of a unified solution for different scenarios can also help reduce hardware complexity and cost.

[0008] As an embodiment, the interpretation of terminology in this application refers to the definition of 3GPP specification protocol TS36 series.

[0009] As an embodiment, the interpretation of the terms in this application refers to the definition of the 3GPP specification protocol TS38 series.

[0010] As an embodiment, the interpretation of the terms in this application refers to the definitions of the 3GPP specification protocol TS37 series.

[0011] It should be noted that, in the absence of conflict, the embodiments and features in any node of the present application can be applied to any other node. In the absence of conflict, the embodiments and features in the embodiments of the present application can be arbitrarily combined with each other.

[0012] The present application discloses a method in a first node used for wireless communication, characterized by comprising:

[0013] receiving a first RRC message; wherein the first RRC message includes a first condition and a target configuration of the first candidate cell, the first condition being a condition under which the target configuration of the first candidate cell is applied; initiating a first process;

[0014] The first process is for early uplink synchronization of the first candidate cell.

[0015] As an embodiment, the first process includes initiating random access on the first candidate cell, and the initiation of the first process depends on at least one of measurement or the first timer is not running.

[0016] As an embodiment, the first process includes starting UE-based timing advance measurement, and the initiation of the first process depends on at least the former of the measurement and the first timer not being running.

[0017] As an embodiment, the problem to be solved by the present application includes: how to obtain early uplink synchronization of conditional mobility; the conditional mobility includes conditional LTM or CHO or CPC.

[0018] As an embodiment, the problem to be solved by the present application includes: how to obtain early uplink synchronization of conditional LTM.

[0019] As an embodiment, the problem to be solved by the present application includes: how to enhance the LTM early uplink synchronization process to make it compatible with conditional LTM.

[0020] As an embodiment, the problem to be solved by the present application includes: how to design a reasonable trigger mechanism to trigger the early uplink synchronization process at an appropriate time.

[0021] As an embodiment, the problem to be solved by this application includes: how to design a reasonable fallback mechanism to enhance the robustness of the early uplink synchronization process of the conditional LTM.

[0022] As an embodiment, the characteristics of the above method include: initiating at least one of the first process-dependent measurement or the first timer not being running.

[0023] As an embodiment, the characteristics of the above method include: the first process is for early uplink synchronization of the first candidate cell.

[0024] As an embodiment, the characteristics of the above method include: the first process includes initiating random access on the first candidate cell.

[0025] As an embodiment, the benefits of the above method include: the signaling process is conducive to TA acquisition for early uplink synchronization of conditional LTM.

[0026] As an embodiment, the benefits of the above method include: being conducive to triggering early uplink synchronization.

[0027] As an embodiment, the benefits of the above method include: being conducive to improving the robustness of the switching process.

[0028] According to one aspect of the present application, it is characterized in that the initiation of the first process depends on the measurement result of the first candidate cell meeting a first threshold; and the first RRC message includes the first threshold.

[0029] As an embodiment, the benefits of the above method include: being helpful in preventing premature triggering of early uplink synchronization.

[0030] As an embodiment, the benefits of the above method include: being conducive to reducing signaling overhead.

[0031] According to one aspect of the present application, the first condition includes that the measurement result of the first candidate cell meets a second threshold; the first RRC message includes the second threshold; and the first threshold and the second threshold are different.

[0032] As an embodiment, the benefits of the above method include: being helpful in preventing premature triggering of conditional LTM cell handover.

[0033] According to one aspect of the present application, it is characterized in that the initiation of the first process depends on the measurement result of the first serving cell meeting a third threshold; the first RRC message includes the third threshold.

[0034] As an embodiment, the benefits of the above method include: being helpful in preventing the triggering of early uplink synchronization too late.

[0035] As an embodiment, the benefits of the above method include: being conducive to reducing signaling overhead.

[0036] According to one aspect of the present application, it is characterized in that the first condition includes that the measurement result of the first serving cell meets a fourth threshold; the first RRC message includes the fourth threshold; and the third threshold and the fourth threshold are different.

[0037] As an embodiment, the above method has the following benefits: it is helpful to prevent the LTM cell handover from being triggered too late.

[0038] According to one aspect of the present application, it is characterized by comprising:

[0039] receiving a first signaling; and starting the first timer in response to receiving the first signaling;

[0040] The first signaling indicates the timing advance of the first candidate cell.

[0041] As an embodiment, the benefits of the above method include: facilitating UE to acquire candidate cells TA for an early uplink synchronization process.

[0042] As an embodiment, the benefits of the above method include: facilitating the UE to maintain the TA of the candidate cell.

[0043] As an embodiment, the benefits of the above method include: being conducive to improving the robustness during the switching process.

[0044] According to one aspect of the present application, it is characterized in that the first process includes sending second signaling and receiving third signaling; the second signaling triggers the third signaling; and the third signaling triggers random access on the first candidate cell.

[0045] As an embodiment, the benefits of the above method include: facilitating the request of CFRA resources for early uplink synchronization.

[0046] As an embodiment, the benefits of the above method include: facilitating the fallback of RACH-free LTM to RACH-based LTM.

[0047] As an embodiment, the benefits of the above method include: facilitating conditional LTM fallback to LTM.

[0048] According to one aspect of the present application, it is characterized in that the first process includes monitoring the random access response on the first candidate cell in the random access; and the first RRC message includes time-frequency resources for monitoring the random access response.

[0049] As an embodiment, the benefits of the above method include: it is helpful to reduce signaling interaction.

[0050] The present application discloses a method used in a second node of wireless communication, characterized by comprising:

[0051] Sending a first RRC message; wherein the first RRC message includes a first condition and a target configuration of the first candidate cell, the first condition being a condition under which the target configuration of the first candidate cell is applied;

[0052] The receiver of the first RRC message initiates a first process; the first process is for early uplink synchronization of the first candidate cell.

[0053] As an embodiment, the first process includes initiating random access on the first candidate cell, and the initiation of the first process depends on at least one of measurement or the first timer is not running.

[0054] As an embodiment, the first process includes initiating random access on the first candidate cell, and the initiation of the first process relies on measurement.

[0055] As an embodiment, the first process includes initiating random access on the first candidate cell, and the initiation of the first process depends on the first timer not being running.

[0056] As an embodiment, the first process includes initiating random access on the first candidate cell, and the initiation of the first process depends on measurement and the first timer is not running.

[0057] As an embodiment, the first process includes starting UE-based timing advance measurement, and the initiation of the first process depends on at least the former of the measurement and the first timer not being running.

[0058] As an embodiment, the first process includes starting UE-based timing advance measurement, and the initiation of the first process relies on measurement.

[0059] As an embodiment, the first process includes starting UE-based timing advance measurement, and the initiation of the first process depends on the measurement and the first timer not being running.

[0060] According to one aspect of the present application, it is characterized in that the initiation of the first process depends on the measurement result of the first candidate cell meeting a first threshold; and the first RRC message includes the first threshold.

[0061] According to one aspect of the present application, the first condition includes that the measurement result of the first candidate cell meets a second threshold; the first RRC message includes the second threshold; and the first threshold and the second threshold are different.

[0062] According to one aspect of the present application, it is characterized in that the initiation of the first process depends on the measurement result of the first serving cell meeting a third threshold; the first RRC message includes the third threshold.

[0063] According to one aspect of the present application, it is characterized in that the first condition includes that the measurement result of the first serving cell meets a fourth threshold; the first RRC message includes the fourth threshold; and the third threshold and the fourth threshold are different.

[0064] According to one aspect of the present application, it is characterized by comprising:

[0065] Sending a first signaling;

[0066] The first signaling indicates the timing advance of the first candidate cell.

[0067] According to one aspect of the present application, it is characterized by comprising:

[0068] receiving a second signaling; and sending a third signaling in response to receiving the second signaling;

[0069] The third signaling triggers the receiver of the third signaling to initiate random access on the first candidate cell.

[0070] According to one aspect of the present application, it is characterized in that the first process includes monitoring the random access response on the first candidate cell in the random access; and the first RRC message includes time-frequency resources for monitoring the random access response.

[0071] The present application discloses a first node used for wireless communication, characterized by comprising:

[0072] A first receiver receives a first RRC message, wherein the first RRC message includes a first condition and a target configuration of the first candidate cell, and the first condition is a condition for applying the target configuration of the first candidate cell;

[0073] A first processor initiates a first process;

[0074] The first process includes initiating random access on the first candidate cell, and the initiation of the first process depends on at least one of measurement or the first timer is not running; or the first process includes starting UE-based timing advance measurement, and the initiation of the first process depends on at least the former of measurement and the first timer is not running; the first process is for early uplink synchronization of the first candidate cell.

[0075] The present application discloses a second node used for wireless communication, characterized by comprising:

[0076] A second transmitter sends a first RRC message, wherein the first RRC message includes a first condition and a target configuration of the first candidate cell, and the first condition is a condition for applying the target configuration of the first candidate cell;

[0077] The receiver of the first RRC message initiates a first process; the first process includes initiating random access on the first candidate cell, and the initiation of the first process depends on at least one of measurement or the first timer is not running; or, the first process includes starting UE-based timing advance measurement, and the initiation of the first process depends on at least the former of measurement and the first timer is not running; the first process is for early uplink synchronization of the first candidate cell.

[0078] As an example, compared with traditional solutions, this application has the following advantages:

[0079] -. The signaling process is conducive to the TA acquisition of early uplink synchronization of conditional LTM;

[0080] -. The signaling process is conducive to triggering the early uplink synchronization of the LTM condition at the right time;

[0081] -.It is beneficial to improve the robustness of the switching process;

[0082] -. Facilitates fast switching of UE;

[0083] -. It is beneficial to transmit the TA obtained during the early uplink synchronization process of multiple candidate cells;

[0084] -. It is helpful to determine the effectiveness of TA in early uplink synchronization;

[0085] -. It is beneficial for the UE to maintain the TA of the candidate cell;

[0086] -. It is beneficial to the uplink alignment of the first candidate cell. BRIEF DESCRIPTION OF THE DRAWINGS

[0087] FIG1 shows a flow chart of triggering of early uplink synchronization of conditional LTM according to an embodiment of the present application;

[0088] FIG2 shows a schematic diagram of a network architecture according to an embodiment of the present application;

[0089] FIG3 is a schematic diagram showing an embodiment of a radio protocol architecture of a user plane and a control plane according to an embodiment of the present application;

[0090] FIG4 shows a schematic diagram of a first communication device and a second communication device according to an embodiment of the present application;

[0091] FIG5 shows a wireless signal transmission flow chart according to an embodiment of the present application;

[0092] FIG6 shows a schematic diagram of a first threshold according to an embodiment of the present application;

[0093] FIG7 shows a schematic diagram of a second threshold according to an embodiment of the present application;

[0094] FIG8 shows a schematic diagram of a third threshold according to an embodiment of the present application;

[0095] FIG9 shows a schematic diagram of a fourth threshold according to an embodiment of the present application;

[0096] FIG10 shows a structural block diagram of a processing device used in a first node according to an embodiment of the present application;

[0097] FIG11 shows a structural block diagram of a processing device used in a second node according to an embodiment of the present application;

[0098] FIG12 shows a schematic diagram of an artificial intelligence processing system according to an embodiment of the present application.

[0099] FIG13 shows a schematic diagram of receiving a random access response on a first candidate cell according to an embodiment of the present application. DETAILED DESCRIPTION

[0100] The technical solution of the present application will be further described in detail below in conjunction with the accompanying drawings. It should be noted that, unless there is a conflict, the embodiments and features in the embodiments of the present application can be combined with each other in any way.

[0101] Example 1

[0102] Example 1 illustrates a flowchart of triggering early uplink synchronization of conditional LTM according to an embodiment of the present application, as shown in Figure 1. In Figure 1, each box represents a step, and it is particularly important to emphasize that the order of the boxes in the figure does not represent the temporal sequence between the steps represented.

[0103] In Example 1, the first node in the present application receives a first RRC message in step 101; the first RRC message includes a first condition and a target configuration of the first candidate cell, and the first condition is a condition under which the target configuration of the first candidate cell is applied; in step 102, a first process is initiated; wherein, the first process includes initiating random access on the first candidate cell, and the initiation of the first process depends on at least one of measurement or the first timer is not running; or, the first process includes starting UE-based timing advance measurement, and the initiation of the first process depends on at least the former of measurement and the first timer is not running; the first process is for early uplink synchronization of the first candidate cell.

[0104] As an embodiment, the first RRC message is an RRCReconfiguration message.

[0105] As an embodiment, the first RRC message includes an LTM-Config field, and the LTM-Config field includes the first condition and the target configuration of the first candidate cell.

[0106] As an embodiment, the first RRC message includes an LTM-Candidate field, and the LTM-Candidate field includes the first condition and the target configuration of the first candidate cell.

[0107] As an embodiment, the first RRC message includes a ConditionalReconfiguration field, and the ConditionalReconfiguration field includes the first condition and the target configuration of the first candidate cell.

[0108] As an embodiment, a condExecutionCond field in the first RRC message includes the first condition.

[0109] As an embodiment, a condExecutionCondLTM field in the first RRC message includes the first condition.

[0110] As an embodiment, a condRRCReconfig field in the first RRC message includes the first condition.

[0111] As an embodiment, an LTMcondReconfig field in the first RRC message includes the first condition.

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

[0113] As an embodiment, an LTM-Candidate field in the first RRC message includes the first condition.

[0114] As an embodiment, the first RRC message includes the first condition and the target configuration of the first candidate cell, which means that the first RRC message configures the first condition and the target configuration of the first candidate cell.

[0115] As an embodiment, the first RRC message includes the first condition and the target configuration of the first candidate cell, which means that the first RRC message indicates the first condition and the target configuration of the first candidate cell.

[0116] As an embodiment, the first candidate cell being a candidate of the first serving cell means that the first candidate cell is an LTM candidate cell of the first serving cell.

[0117] As an embodiment, the first candidate cell being a candidate of the first serving cell means that the first candidate cell is a conditional LTM candidate cell of the first serving cell.

[0118] As an embodiment, the first candidate cell being a candidate of the first serving cell means that the first candidate cell is a C-LTM candidate cell of the first serving cell.

[0119] As an embodiment, the first candidate cell being a candidate of the first serving cell means that the first candidate cell is a continuous LTM candidate cell of the first serving cell.

[0120] As an embodiment, the first candidate cell being a candidate of the first serving cell means that the first candidate cell is a CHO of the first serving cell.

[0121] As an embodiment, the first candidate cell being a candidate for the first serving cell means: the first serving cell is a SpCell, the first candidate cell is a candidate SpCell; and the SpCell is a PCell or a PSCell.

[0122] As an embodiment, the first condition is an execution condition for conditional LTM cell switching to the first candidate cell.

[0123] As an embodiment, the first condition depends on a measurement.

[0124] As a sub-embodiment of the above embodiment, the measurement is L1 measurement.

[0125] As a sub-embodiment of the above embodiment, the measurement includes measuring a reference signal of the first candidate cell.

[0126] As a sub-embodiment of the above embodiment, the measurement includes measuring a reference signal of the first serving cell.

[0127] As a sub-embodiment of the above embodiment, the measurement includes measuring a reference signal of the first serving cell and a reference signal of the first candidate cell.

[0128] As an embodiment, the first condition depends on the decision of the AI ​​module.

[0129] As an embodiment, the target configuration refers to the RRC reconfiguration information of the first candidate cell.

[0130] As an embodiment, the target configuration refers to a condRRCReconfig domain.

[0131] As an embodiment, the target configuration refers to an octet String containing an RRCReconfiguration message.

[0132] As an embodiment, in response to the first condition being met, the target configuration is applied.

[0133] As an embodiment, the first process includes sending a first Preamble.

[0134] As a sub-embodiment of the above embodiment, the first process is completed as a response to the first Preamble being sent.

[0135] As a sub-embodiment of the above embodiment, the first process includes receiving the first signaling.

[0136] As a sub-embodiment of the above embodiment, the first signaling is received after the first Preamble is sent.

[0137] As a sub-embodiment of the above embodiment, the first node descrambles the first signaling using the RA-RNTI corresponding to the first Preamble.

[0138] As a sub-embodiment of the above embodiment, the first node descrambles the first signaling using its C-RNTI of the first serving cell.

[0139] As a sub-embodiment of the above embodiment, the first process is completed in response to receiving the first signaling.

[0140] As an embodiment, initiating the first process refers to triggering the first process.

[0141] As an embodiment, initiating the first process refers to starting the first process.

[0142] As an embodiment, initiating the first process refers to starting the first process.

[0143] As an embodiment, initiating the first process refers to initializing the first process.

[0144] As an embodiment, initiating the first process refers to executing the first process.

[0145] As an embodiment, the initiating the first process relies on measurement.

[0146] As an embodiment, the phrase “initiating the first process depends on measurement” means that the initiating the first process depends on a measurement result of the first candidate cell.

[0147] As an embodiment, the phrase "initiating the first process depends on measurement" means that the initiating the first process depends on the measurement result of the first serving cell.

[0148] As an embodiment, the phrase "initiating the first process depends on measurement" means that the initiating the first process depends on the measurement result of the first candidate cell and the measurement result of the first serving cell.

[0149] As an embodiment, the initiation of the first process depends on the first timer not being running.

[0150] As a sub-embodiment of the above embodiment, under the assumption that the first timer is running, the first process is not initiated.

[0151] As a sub-embodiment of the above embodiment, the first process is not initiated as long as the first timer is running.

[0152] As an embodiment, the initiating of the first process relies on measurement and the first timer not being running.

[0153] As an embodiment, the initiating of the first process relies on measurement or the first timer is not running.

[0154] As an embodiment, the initiation of the first process relies on the decision of the AI ​​module.

[0155] As an embodiment, the initiating of the first process depends on the output of the AI ​​module.

[0156] As an embodiment, a first receiver receives a first RRC message, wherein the first RRC message includes configuration information of a first candidate cell; wherein the first candidate cell is a candidate for a first serving cell, and the configuration information of the first candidate cell includes a target configuration and a first condition, and the first condition is a condition for the target configuration to be applied; a first processor initiates random access on the first candidate cell; wherein initiating random access on the first candidate cell depends on at least one of measurement or the first timer is not running; the first process is for early uplink synchronization of the first candidate cell; the first process is to initiate random access on the first candidate cell.

[0157] As an embodiment, the first process includes sending at least one signaling on the first serving cell before initiating random access on the first candidate cell.

[0158] As an embodiment, the first process includes sending at least one signaling on the first candidate cell before initiating random access on the first candidate cell.

[0159] As an embodiment, the at least one signaling is of the physical layer.

[0160] As an embodiment, the at least one signaling is of the MAC sublayer.

[0161] As an embodiment, the at least one signaling is of the RRC sublayer.

[0162] As an embodiment, the at least one signaling is the second signaling.

[0163] As an embodiment, the configuration information of the first candidate cell includes random access resources of the random access.

[0164] As an embodiment, the random access resource is a CFRA resource.

[0165] As a sub-embodiment of the above embodiment, the CFRA resource is configured by the first RRC message.

[0166] As a sub-embodiment of the above embodiment, the CFRA resource is configured by the third signaling.

[0167] As a sub-embodiment of the above embodiment, the CFRA resource is configured by a RACH-ConfigDedicated field in the first RRC message.

[0168] As a sub-embodiment of the above embodiment, the CFRA resource is configured by a CFRA field in the first RRC message.

[0169] As a sub-embodiment of the above embodiment, the CFRA resource is one or more CFRA-SSB-Resource sub-domains.

[0170] As a sub-embodiment of the above embodiment, each CFRA-SSB-Resource sub-field includes an SSB index and a random access Preamble index.

[0171] As a sub-embodiment of the above embodiment, the CFRA resources include random access opportunity (Random Access Occasion) configuration and SSB resources.

[0172] As a sub-embodiment of the above embodiment, the CFRA resource is indicated by the Random Access Preamble index field, the UL / SUL indicator field, the SS / PBCH index field, the PRACH Mask index field, and the Cell indicator field in the third signaling.

[0173] As an embodiment, the configuration information includes the CBRA configuration of the random access.

[0174] As an embodiment, the random access initiated on the first candidate cell is CFRA.

[0175] As an embodiment, the random access initiated on the first candidate cell is CBRA.

[0176] As an embodiment, the Preamble Index of the random access initiated on the first candidate cell is a Preamble Index in a specified Preamble Index set.

[0177] As an embodiment, the random access initiated on the first candidate cell is CBRA, and the Preamble Index of the random access is a Preamble Index in a specified Preamble Index set.

[0178] As an embodiment, the first timer is a TimeAlignmentTimer.

[0179] As a sub-embodiment of the above embodiment, the TimeAlignmentTimer is for timing advance of the first candidate cell.

[0180] As a sub-embodiment of the above embodiment, the TimeAlignmentTimer is for timing advance of the first serving cell.

[0181] As an embodiment, the value of the first timer is configured by an RRC message.

[0182] As an embodiment, the value of the first timer is configured by the first RRC message.

[0183] As an embodiment, initiation of the first process is triggered in response to expiration of the first timer.

[0184] As an embodiment, the first timer is started or restarted in response to receiving a timing advance command.

[0185] As a sub-embodiment of the above embodiment, the one timing advance command is for the timing advance of the first candidate cell.

[0186] As a sub-embodiment of the above embodiment, the one timing advance command is for the timing advance of the first serving cell.

[0187] As an embodiment, the first process is for early uplink synchronization of the first candidate cell.

[0188] As an embodiment, the first process is a UE-based timing advance measurement for the first candidate cell.

[0189] As an embodiment, the first process includes early uplink synchronization for the first candidate cell.

[0190] As an embodiment, the first process includes UE-based timing advance measurement for the first candidate cell.

[0191] As an embodiment, the first process is early uplink synchronization for the first candidate cell and UE-based timing advance measurement for the first candidate cell.

[0192] As an embodiment, the UE-based timing advance measurement refers to: measuring the timing advance by the UE.

[0193] As an embodiment, the UE-based timing advance measurement refers to: determining the timing advance based on UE measurement.

[0194] As an embodiment, the UE-based timing advance measurement includes: a process in which the UE derives a timing advance to be applied to the first uplink transmission to the first candidate cell.

[0195] As an embodiment, the UE-based timing advance measurement includes: the UE performs a first measurement process.

[0196] As an embodiment, the first measurement process is L3 measurement.

[0197] As an embodiment, the first measurement process is L1 measurement.

[0198] As an embodiment, the first measurement process includes L3 measurement.

[0199] As an embodiment, the first measurement process includes L1 measurement.

[0200] As an embodiment, the first measurement process is RSTD measurement.

[0201] As an embodiment, the first measurement process is based on SSB measurement.

[0202] As an embodiment, the first measurement process is based on PRS measurement.

[0203] As an embodiment, the first measurement process refers to: measuring the downlink reception timing difference between the first serving cell and the first candidate cell.

[0204] As an embodiment, the UE-based timing advance measurement includes: the UE performs a first derivation process.

[0205] As an embodiment, the first derivation process refers to: a process of deriving the uplink timing advance of the first candidate cell based on the downlink reception timing difference between the first serving cell and the first candidate cell and the effective uplink timing of the first candidate cell, as well as the downlink transmission timing difference between the first serving cell and the first candidate cell.

[0206] As an embodiment, the UE-based timing advance measurement includes: performing the first derivation process.

[0207] As a sub-embodiment of the above embodiment, the first derivation process is: uplink timing of the first candidate cell = uplink timing of the first serving cell + 2×downlink receiving timing difference.

[0208] As a sub-embodiment of the above embodiment, the first derivation process is: uplink timing of the first candidate cell = uplink timing of the first serving cell - 2×downlink receiving timing difference.

[0209] As a sub-embodiment of the above embodiment, the first derivation process is: uplink timing of the first candidate cell = uplink timing of the first serving cell + 2×(downlink receiving timing difference - downlink sending timing difference).

[0210] As a sub-embodiment of the above embodiment, the first derivation process is: uplink timing of the first candidate cell = uplink timing of the first serving cell - 2×(downlink receive timing difference - downlink transmit timing difference).

[0211] As a sub-embodiment of the above embodiment, the first derivation process is: uplink timing of the first candidate cell = uplink timing of the first serving cell + 2×(downlink receiving timing difference + downlink sending timing difference).

[0212] As a sub-embodiment of the above embodiment, the first derivation process is: uplink timing of the first candidate cell = uplink timing of the first serving cell - 2×(downlink receiving timing difference + downlink sending timing difference).

[0213] As a sub-embodiment of the above embodiment, the first time interval is a downlink receiving and sending timing difference.

[0214] As a sub-embodiment of the above embodiment, the downlink reception timing difference refers to: a downlink reception timing difference between the first candidate cell and the first serving cell.

[0215] As a sub-embodiment of the above embodiment, the downlink transmit and receive timing difference refers to: a downlink transmit timing difference between the first candidate cell and the first serving cell.

[0216] As a sub-embodiment of the above embodiment, the downlink reception timing difference refers to: a downlink reception timing difference between the first serving cell and the first candidate cell.

[0217] As a sub-embodiment of the above embodiment, the downlink receiving and sending timing difference refers to: a downlink sending timing difference between the first serving cell and the first candidate cell.

[0218] As an embodiment, the UE-based timing advance measurement is implemented based on the UE.

[0219] As an embodiment, the UE-based timing advance measurement is based on a 3GPP protocol.

[0220] As an embodiment, the UE-based timing advance measurement is partially based on UE implementation and partially based on 3GPP protocol.

[0221] As an embodiment, the first measurement process is implemented based on UE.

[0222] As an embodiment, the first derivation process is based on the 3GPP protocol.

[0223] As an embodiment, the first measurement process is based on the 3GPP protocol.

[0224] As an embodiment, the first derivation process is implemented based on UE.

[0225] As an embodiment, the first process includes starting UE-based timing advance measurement, and the initiation of the first process depends on at least the former of the measurement and the first timer not being running.

[0226] As a sub-embodiment of the above embodiment, the first process includes starting UE-based timing advance measurement, and the initiation of the first process relies on measurement.

[0227] As a sub-embodiment of the above embodiment, the first process includes starting UE-based timing advance measurement, and the initiation of the first process depends on the measurement and the first timer not being running.

[0228] As a sub-embodiment of the above embodiment, a first receiver receives a first RRC message; wherein the first RRC message includes a first condition and a target configuration of the first candidate cell, and the first condition is a condition for the target configuration to be applied; a first processor starts UE-based timing advance measurement, and the start of UE-based timing advance measurement depends on at least the former of the measurement and the first timer not being in operation; the first process is for early uplink synchronization of the first candidate cell; the first process is to start UE-based timing advance measurement.

[0229] As an embodiment, the starting of at least the former of the UE-based timing advance measurement dependent measurement and the first timer not being in operation means: when the first timer is running, the starting of the UE-based timing advance measurement dependent measurement; the first timer is a TimeAlignmentTimer for the timing advance of the first service cell.

[0230] As an embodiment, the starting of at least the former of the UE-based timing advance measurement dependent measurement and the first timer not being in operation means: when the first timer is not in operation, the starting of the UE-based timing advance measurement dependent measurement; the first timer is a TimeAlignmentTimer for the timing advance of the first candidate cell.

[0231] As an embodiment, the starting of at least the former of the UE-based timing advance measurement dependent measurement and the first timer not being in operation means: when the first timer is not in operation and the second timer is in operation, the starting of the UE-based timing advance measurement dependent measurement; the first timer is a TimeAlignmentTimer for the timing advance of the first candidate cell; the second timer is a TimeAlignmentTimer for the timing advance of the first serving cell.

[0232] As an embodiment, at least the former of the starting of the UE-based timing advance measurement-dependent measurement and the first timer not being in operation means: when the first timer is not in operation, the starting of the UE-based timing advance measurement-dependent measurement; when the first timer is in operation, the starting of the UE-based timing advance measurement-dependent measurement is dependent on the signaling indication of the first service cell; the first timer is a TimeAlignmentTimer for the timing advance of the first service cell.

[0233] As an embodiment, starting the UE-based timing advance measurement refers to triggering the UE-based timing advance measurement.

[0234] As an embodiment, the early uplink synchronization refers to: uplink synchronization before the target configuration of the first candidate cell is applied.

[0235] As an embodiment, the early uplink synchronization refers to: uplink synchronization before the first condition is met.

[0236] Example 2

[0237] Embodiment 2 illustrates a schematic diagram of a network architecture according to an embodiment of the present application, as shown in FIG2 . FIG2 illustrates a network architecture 200 of a 5G NR (New Radio) / LTE (Long-Term Evolution) / LTE-A (Long-Term Evolution Advanced) system. The 5G NR / LTE / LTE-A network architecture 200 may be referred to as a 5G System (5G System) / EPS (Evolved Packet System) 200 or some other appropriate terminology. The 5GS / EPS 200 includes at least one of a UE (User Equipment) 201, a RAN (Radio Access Network) 202, a 5G Core Network (5G Core Network) / EPC (Evolved Packet Core) 210, an HSS (Home Subscriber Server) / UDM (Unified Data Management) 220, and an Internet service 230. 5GS / EPS can be interconnected with other access networks, but these entities / interfaces are not shown for simplicity. As shown, 5GS / EPS provides packet-switched services, but those skilled in the art will readily appreciate that the various concepts presented throughout this application can be extended to networks providing circuit-switched services or other cellular networks. The RAN includes node 203 and other nodes 204. Node 203 provides user and control plane protocol termination towards UE 201. Node 203 can be connected to other nodes 204 via an Xn interface (e.g., backhaul) / X2 interface. Node 203 may also be referred to as a base station, base transceiver station, radio base station, radio transceiver, transceiver function, basic service set (BSS), extended service set (ESS), TRP (transmitter / receiver node), or some other appropriate terminology. Node 203 provides an access point to the 5GC / EPC 210 for UE 201. Examples of UE 201 include a cellular phone, a smart phone, a Session Initiation Protocol (SIP) phone, a laptop computer, a personal digital assistant (PDA), a satellite radio, non-terrestrial base station communications, satellite mobile communications, a global positioning system, a multimedia device, a video device, a digital audio player (e.g., an MP3 player), a camera, a game console, a drone, an aircraft, a narrowband Internet of Things device, a machine type communication device, a land vehicle, an automobile, a wearable device, or any other similarly functional device.Those skilled in the art may also refer to UE 201 as a mobile station, 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, or some other appropriate term. Node 203 is connected to 5GC / EPC 210 via an S1 / NG interface. 5GC / EPC 210 includes MME (Mobility Management Entity) / AMF (Authentication Management Field) / SMF (Session Management Function) 211, other MMEs / AMFs / SMFs 214, S-GW (Service Gateway) / UPF (User Plane Function) 212, and P-GW (Packet Data Network Gateway) / UPF 213. MME / AMF / SMF 211 is a control node that handles signaling between UE 201 and 5GC / EPC 210. Generally, MME / AMF / SMF 211 provides bearer and connection management. All user IP (Internet Protocol) packets are transmitted through S-GW / UPF 212, which is itself connected to P-GW / UPF 213. The P-GW provides UE IP address allocation and other functions. P-GW / UPF 213 is connected to Internet Services 230. Internet Services 230 includes operator-specific Internet Protocol services, which may include the Internet, intranet, IMS (IP Multimedia Subsystem), and packet-switched streaming services.

[0238] As an embodiment, the UE201 corresponds to the first node in this application.

[0239] As an embodiment, the UE 201 is a user equipment (UE).

[0240] As an embodiment, the UE 201 is a base station (BS).

[0241] As an embodiment, the UE 201 is a relay device.

[0242] As an embodiment, the UE 201 is a gateway device.

[0243] As an embodiment, the node 203 corresponds to the second node in this application.

[0244] As an embodiment, the node 203 is a base station device.

[0245] As an embodiment, the node 203 is a user equipment.

[0246] As an embodiment, the node 203 is a relay device.

[0247] As an embodiment, the node 203 is a gateway device.

[0248] Typically, the UE 201 is a user equipment, and the node 203 is a base station device.

[0249] Typically, the UE 201 is a user equipment, and the node 203 is a user equipment.

[0250] Typically, the UE 201 is a base station device, and the node 203 is a base station device.

[0251] As an embodiment, the user equipment supports transmission of a non-terrestrial network (NTN).

[0252] As an embodiment, the user equipment supports transmission via a terrestrial network (Terrestrial Network).

[0253] As an embodiment, the user equipment supports dual connection (DC) transmission.

[0254] As an embodiment, the user equipment includes an aircraft.

[0255] As an embodiment, the user equipment includes a vehicle-mounted terminal.

[0256] As an embodiment, the user equipment includes a vessel.

[0257] As an embodiment, the user equipment includes an Internet of Things terminal.

[0258] As an embodiment, the user equipment includes a terminal of the Industrial Internet of Things.

[0259] As an embodiment, the user equipment includes a device that supports low-latency and high-reliability transmission.

[0260] As an embodiment, the user equipment includes a test device.

[0261] As an embodiment, the user equipment includes a signaling tester.

[0262] As an embodiment, the user equipment includes an IAB (Integrated Access and Backhaul)-MT (Mobile Termination).

[0263] As an embodiment, the base station device supports transmission in a non-terrestrial network.

[0264] As an embodiment, the base station device supports transmission of a terrestrial network.

[0265] As an embodiment, the base station equipment includes a base transceiver station (Base Transceiver Station, BTS).

[0266] As an embodiment, the base station device includes a Node B (NB).

[0267] As an embodiment, the base station device includes a gNB.

[0268] As an embodiment, the base station device includes an eNB.

[0269] As an embodiment, the base station device includes ng-eNB.

[0270] As an embodiment, the base station device includes an en-gNB.

[0271] As an embodiment, the base station device includes a CU (Centralized Unit).

[0272] As an embodiment, the base station device includes a DU (Distributed Unit).

[0273] As an embodiment, the base station device includes a TRP (Transmitter Receiver Point).

[0274] As an embodiment, the base station device includes a macro cellular (Marco Cellular) base station.

[0275] As an embodiment, the base station device includes a micro cell base station.

[0276] As an embodiment, the base station device includes a pico cell (Pico Cell) base station.

[0277] As an embodiment, the base station device includes a home base station (Femtocell).

[0278] As an embodiment, the base station device includes a flying platform device.

[0279] As an embodiment, the base station device includes a satellite device.

[0280] As an embodiment, the base station device includes a testing device.

[0281] As an embodiment, the base station equipment includes a signaling tester.

[0282] As an embodiment, the base station device includes a gateway device.

[0283] As an embodiment, the base station device includes an IAB-node.

[0284] As an embodiment, the base station device includes an IAB-donor.

[0285] As an embodiment, the base station device includes an IAB-donor-CU.

[0286] As an embodiment, the base station device includes an IAB-donor-DU.

[0287] As an embodiment, the base station device includes an IAB-DU.

[0288] As an embodiment, the base station device includes an IAB-MT.

[0289] As an embodiment, the relay device includes a relay.

[0290] As an embodiment, the relay device includes an L3 relay.

[0291] As an embodiment, the relay device includes an L2 relay.

[0292] As an embodiment, the relay device includes a router.

[0293] As an embodiment, the relay device includes a switch.

[0294] As an embodiment, the relay device includes a gateway device.

[0295] As an embodiment, the relay device includes user equipment.

[0296] As an embodiment, the relay device includes a base station device.

[0297] Example 3

[0298] Embodiment 3 illustrates a schematic diagram of an embodiment of a radio protocol architecture for a user plane and a control plane according to the present application, as shown in FIG3 . FIG3 is a schematic diagram illustrating an embodiment of a radio protocol architecture for a user plane 350 and a control plane 300. FIG3 illustrates the radio protocol architecture for the control plane 300 using three layers: Layer 1, Layer 2, and Layer 3. Layer 1 (L1 layer) is the lowest layer and implements various PHY (physical layer) signal processing functions. The L1 layer will be referred to herein as PHY 301. Layer 2 (L2 layer) 305 is above PHY 301 and includes a MAC (Medium Access Control) sublayer 302, an RLC (Radio Link Control) sublayer 303, and a PDCP (Packet Data Convergence Protocol) sublayer 304. The PDCP sublayer 304 provides multiplexing between different radio bearers and logical channels. The PDCP sublayer 304 also provides security by encrypting data packets and supports inter-zone mobility. The RLC sublayer 303 provides segmentation and reassembly of upper layer data packets, retransmission of lost data packets, and reordering of data packets to compensate for out-of-order reception due to HARQ (Hybrid Automatic Repeat Request). The MAC sublayer 302 provides multiplexing between logical and transport channels. The MAC sublayer 302 is also responsible for allocating various radio resources (e.g., resource blocks) within a cell. The MAC sublayer 302 is also responsible for HARQ operations. The RRC (Radio Resource Control) sublayer 306 in Layer 3 (L3) of the control plane 300 is responsible for obtaining radio resources (i.e., radio bearers) and configuring lower layers using RRC signaling. The radio protocol architecture of the user plane 350 includes Layer 1 (L1) and Layer 2 (L2). The radio protocol architecture in the user plane 350 is generally identical to the corresponding layers and sublayers in the control plane 300, including the physical layer 351, the PDCP sublayer 354 in the L2 layer 355, the RLC sublayer 353 in the L2 layer 355, and the MAC sublayer 352 in the L2 layer 355. However, the PDCP sublayer 354 also provides header compression for upper layer packets to reduce radio transmission overhead. The L2 layer 355 in the user plane 350 also includes the SDAP (Service Data Adaptation Protocol) sublayer 356, which is responsible for mapping QoS flows to data radio bearers (DRBs) to support service diversity.

[0299] As an embodiment, the wireless protocol architecture in FIG3 is applicable to the first node in this application.

[0300] As an embodiment, the wireless protocol architecture in FIG3 is applicable to the second node in this application.

[0301] As an embodiment, the wireless protocol architecture in FIG3 is applicable to the third node in this application.

[0302] As an embodiment, the first RRC message in this application is generated in the RRC306.

[0303] As an embodiment, the first signaling in the present application is generated by the MAC302 or MAC352.

[0304] As an embodiment, the first signaling in this application is generated in the PHY301 or PHY351.

[0305] As an embodiment, the second signaling in this application is generated in the RRC306.

[0306] As an embodiment, the second signaling in the present application is generated by the MAC302 or MAC352.

[0307] As an embodiment, the second signaling in this application is generated in the PHY301 or PHY351.

[0308] As an embodiment, the third signaling in this application is generated in the RRC306.

[0309] As an embodiment, the third signaling in the present application is generated by the MAC302 or MAC352.

[0310] As an embodiment, the third signaling in the present application is generated in the PHY301 or PHY351.

[0311] As an embodiment, the first Preamble in the present application is generated by the MAC302 or MAC352.

[0312] As an embodiment, the first Preamble in this application is generated by the PHY301 or PHY351.

[0313] Example 4

[0314] Embodiment 4 shows a schematic diagram of a first communication device and a second communication device according to the present application, as shown in Figure 4. Figure 4 is a block diagram of a first communication device 450 and a second communication device 410 communicating with each other in an access network.

[0315] The first communication device 450 includes a controller / processor 459 , a memory 460 , a data source 467 , a transmit processor 468 , a receive processor 456 , a multi-antenna transmit processor 457 , a multi-antenna receive processor 458 , a transmitter / receiver 454 and an antenna 452 .

[0316] The second communication device 410 includes a controller / processor 475 , a memory 476 , a receive processor 470 , a transmit processor 416 , a multi-antenna receive processor 472 , a multi-antenna transmit processor 471 , a transmitter / receiver 418 , and an antenna 420 .

[0317] During transmission from the second communication device 410 to the first communication device 450, upper layer data packets from the core network are provided to the controller / processor 475 at the second communication device 410. The controller / processor 475 implements L2 layer functionality. During transmission from the second communication device 410 to the first communication device 450, the controller / processor 475 provides header compression, encryption, packet segmentation and reordering, multiplexing between logical and transport channels, and radio resource allocation to the first communication device 450 based on various priority metrics. The controller / processor 475 is also responsible for retransmission of lost packets and signaling to the first communication device 450. The transmit processor 416 and the multi-antenna transmit processor 471 implement various signal processing functions for the L1 layer (i.e., the physical layer). The transmit processor 416 implements coding and interleaving to facilitate forward error correction (FEC) at the second communication device 410, as well as mapping of signal constellations based on various modulation schemes (e.g., binary phase-shift keying (BPSK), quadrature phase-shift keying (QPSK), M-phase-shift keying (M-PSK), and M-quadrature amplitude modulation (M-QAM)). The multi-antenna transmit processor 471 performs digital spatial precoding, including codebook-based and non-codebook-based precoding, and beamforming on the coded and modulated symbols to generate one or more spatial streams. The transmit processor 416 then maps each spatial stream to a subcarrier, multiplexes it with a reference signal (e.g., a pilot) in the time and / or frequency domain, and then uses an inverse fast Fourier transform (IFFT) to generate a physical channel carrying the time-domain multicarrier symbol stream. The multi-antenna transmit processor 471 then performs transmit analog precoding / beamforming operations on the time-domain multicarrier symbol stream. Each transmitter 418 converts the baseband multi-carrier symbol stream provided by the multi-antenna transmit processor 471 into a radio frequency stream, and then provides it to a different antenna 420.

[0318] During transmission from the second communications device 410 to the first communications device 450, each receiver 454 at the first communications device 450 receives a signal via its corresponding antenna 452. Each receiver 454 recovers the information modulated onto the RF carrier and converts the RF stream into a baseband multi-carrier symbol stream, which is provided to the receive processor 456. The receive processor 456 and the multi-antenna receive processor 458 implement various L1 signal processing functions. The multi-antenna receive processor 458 performs receive analog precoding / beamforming operations on the baseband multi-carrier symbol stream from the receiver 454. The receive processor 456 converts the baseband multi-carrier symbol stream, after the receive analog precoding / beamforming operations, from the time domain to the frequency domain using a fast Fourier transform (FFT). In the frequency domain, the receive processor 456 demultiplexes the physical layer data signal and reference signal, where the reference signal is used for channel estimation. The data signal undergoes multi-antenna detection in the multi-antenna receive processor 458 to recover any spatial streams destined for the first communications device 450. The symbols on each spatial stream are demodulated and recovered in the receive processor 456, and soft decisions are generated. The receive processor 456 then decodes and deinterleaves the soft decisions to recover the upper layer data and control signals transmitted by the second communication device 410 on the physical channel. The upper layer data and control signals are then provided to the controller / processor 459. The controller / processor 459 implements the functions of the L2 layer. The controller / processor 459 may be associated with a memory 460 that stores program code and data. The memory 460 may be referred to as a computer-readable medium. During transmission from the second communication device 410 to the second communication device 450, the controller / processor 459 provides demultiplexing between transport and logical channels, packet reassembly, decryption, header decompression, and control signal processing to recover upper layer data packets from the core network. The upper layer data packets are then provided to all protocol layers above the L2 layer. Various control signals may also be provided to the L3 layer for L3 processing.

[0319] During transmission from the first communication device 450 to the second communication device 410, a data source 467 is used at the first communication device 450 to provide upper layer data packets to the controller / processor 459. The data source 467 represents all protocol layers above the L2 layer. Similar to the transmission functionality at the second communication device 410 described in the transmission from the second communication device 410 to the first communication device 450, the controller / processor 459 implements header compression, encryption, packet segmentation and reordering, and multiplexing between logical and transport channels based on radio resource allocation, implementing L2 layer functions for the user plane and control plane. The controller / processor 459 is also responsible for retransmission of lost packets and signaling to the second communication device 410. The transmit processor 468 performs modulation mapping and channel coding, while the multi-antenna transmit processor 457 performs digital multi-antenna spatial precoding, including codebook-based and non-codebook-based precoding, and beamforming. The transmit processor 468 then modulates the resulting spatial stream into a multi-carrier / single-carrier symbol stream. After analog precoding and beamforming operations in the multi-antenna transmit processor 457, the stream is provided to different antennas 452 via the transmitter 454. Each transmitter 454 first converts the baseband symbol stream provided by the multi-antenna transmit processor 457 into a RF symbol stream before providing it to the antenna 452.

[0320] During transmission from the first communications device 450 to the second communications device 410, the functionality at the second communications device 410 is similar to the reception functionality at the first communications device 450 described for transmission from the second communications device 410 to the first communications device 450. Each receiver 418 receives RF signals via its corresponding antenna 420, converts the received RF signals into baseband signals, and provides the baseband signals to a multi-antenna receive processor 472 and a receive processor 470. The receive processor 470 and the multi-antenna receive processor 472 collectively implement L1 layer functionality. A controller / processor 475 implements L2 layer functionality. The controller / processor 475 may be associated with a memory 476 storing program codes and data. The memory 476 may be referred to as a computer-readable medium. During transmission from the first communications device 450 to the second communications device 410, the controller / processor 475 provides demultiplexing between transport and logical channels, packet reassembly, decryption, header decompression, and control signal processing to recover upper layer data packets from the UE 450. Upper layer packets from controller / processor 475 may be provided to the core network.

[0321] As an embodiment, the first communication device 450 includes: at least one processor and at least one memory, the at least one memory including computer program code; the at least one memory and the computer program code are configured to be used together with the at least one processor, and the first communication device 450 at least: receives a first RRC message; the first RRC message includes a first condition and a target configuration of the first candidate cell, the first condition being a condition under which the target configuration of the first candidate cell is applied; initiates a first process; the first process includes initiating random access on the first candidate cell, the initiation of the first process depends on at least one of measurement or the first timer is not running; or, the first process includes starting UE-based timing advance measurement, the initiation of the first process depends on at least the former of measurement and the first timer is not running; the first process is for early uplink synchronization of the first candidate cell.

[0322] As an embodiment, the first communication device 450 includes: a memory storing a computer-readable instruction program, the computer-readable instruction program generating actions when executed by at least one processor, the actions including: receiving a first RRC message; the first RRC message including a first condition and a target configuration of the first candidate cell, the first condition being a condition under which the target configuration of the first candidate cell is applied; initiating a first process; the first process including initiating random access on the first candidate cell, the initiation of the first process depending on at least one of measurement or the first timer not being in operation; or, the first process including starting UE-based timing advance measurement, the initiation of the first process depending on at least the former of measurement and the first timer not being in operation; the first process is for early uplink synchronization of the first candidate cell.

[0323] As an embodiment, the second communication device 410 includes: at least one processor and at least one memory, the at least one memory including computer program code; the at least one memory and the computer program code are configured to be used together with the at least one processor. The second communication device 410 at least: sends a first RRC message; the first RRC message includes a first condition and a target configuration of the first candidate cell, the first condition being a condition under which the target configuration of the first candidate cell is applied; a receiver of the first RRC message initiates a first process; the first process includes initiating random access on the first candidate cell, the initiation of the first process depends on at least one of measurement or the first timer is not running; or, the first process includes starting UE-based timing advance measurement, the initiation of the first process depends on at least the former of measurement and the first timer is not running; the first process is for early uplink synchronization of the first candidate cell.

[0324] As an embodiment, the second communication device 410 includes: a memory storing a computer-readable instruction program, the computer-readable instruction program generating an action when executed by at least one processor, the action including: sending a first RRC message; the first RRC message includes a first condition and a target configuration of the first candidate cell, the first condition being a condition under which the target configuration of the first candidate cell is applied; a receiver of the first RRC message initiates a first process; the first process includes initiating random access on the first candidate cell, the initiation of the first process depends on at least one of measurement or the first timer not being running; or, the first process includes starting UE-based timing advance measurement, the initiation of the first process depends on at least the former of measurement and the first timer not being running; the first process is for early uplink synchronization of the first candidate cell.

[0325] As an embodiment, at least one of the antenna 452, the receiver 454, the receiving processor 456, and the controller / processor 459 is used to receive the first RRC message.

[0326] As an embodiment, at least one of the antenna 420, the transmitter 418, the transmit processor 416, and the controller / processor 475 is used to send the first RRC message.

[0327] As an embodiment, at least one of the antenna 452, the receiver 454, the receiving processor 456, and the controller / processor 459 is used to receive the first signaling.

[0328] As an embodiment, at least one of the antenna 420, the transmitter 418, the transmit processor 416, and the controller / processor 475 is used to send the first signaling.

[0329] As an embodiment, at least one of the antenna 452, the transmitter 454, the transmit processor 468, and the controller / processor 459 is used to send the second signaling.

[0330] As an embodiment, at least one of the antenna 420, the receiver 418, the receiving processor 470, and the controller / processor 475 is used to receive the second signaling.

[0331] As an embodiment, at least one of the antenna 452 , the receiver 454 , the receiving processor 456 , and the controller / processor 459 is used to receive the third signaling.

[0332] As an embodiment, at least one of the antenna 420, the transmitter 418, the transmit processor 416, and the controller / processor 475 is used to send the third signaling.

[0333] As an embodiment, at least one of the antenna 452, the transmitter 454, the transmit processor 468, and the controller / processor 459 is used to transmit the first preamble.

[0334] As an embodiment, at least one of the antenna 420 , the receiver 418 , the receiving processor 470 , and the controller / processor 475 is used to receive the first preamble.

[0335] As an embodiment, the first communication device 450 corresponds to the first node in this application.

[0336] As an embodiment, the second communication device 410 corresponds to the second node in this application.

[0337] As an embodiment, the first communication device 450 is a user equipment.

[0338] As an embodiment, the first communication device 450 is a base station device.

[0339] As an embodiment, the first communication device 450 is a relay device.

[0340] As an embodiment, the second communication device 410 is a user equipment.

[0341] As an embodiment, the second communication device 410 is a base station device.

[0342] As an embodiment, the second communication device 410 is a relay device.

[0343] As an embodiment, the third communication device 410 is a user equipment.

[0344] As an embodiment, the third communication device 410 is a base station device.

[0345] As an embodiment, the third communication device 410 is a relay device.

[0346] Example 5

[0347] Example 5 illustrates a wireless signal transmission flow chart according to an embodiment of the present application, as shown in FIG5. It should be noted that the order in this example does not limit the signal transmission order and implementation order in the present application.

[0348] For the first node U01:

[0349] In step S5101, a first RRC message is received;

[0350] In step S5102, first signaling is received;

[0351] In step S5103, as a response to receiving the first signaling, start the first timer;

[0352] In step S5104, a second signaling is sent;

[0353] In step S5105, receiving a third signaling;

[0354] In step S5106, the first process is initiated.

[0355] For the second node N02:

[0356] In step S5201, a first RRC message is sent;

[0357] In step S5202, a first signaling is sent;

[0358] In step S5203, receiving second signaling;

[0359] In step S5204, the third signaling is sent.

[0360] In embodiment 5, the first RRC message includes a first condition and a target configuration of the first candidate cell, the first condition being a condition under which the target configuration of the first candidate cell is applied; the initiation of the first process depends on at least one of measurement or the first timer is not running; the first process is for early uplink synchronization of the first candidate cell; the first signaling indicates the timing advance of the first candidate cell; the second signaling triggers the third signaling; and the third signaling triggers random access on the first candidate cell.

[0361] As an embodiment, the first node U01 and the second node N02 are connected wirelessly.

[0362] As an embodiment, the first node U01 and the second node N02 are connected via a wired connection.

[0363] As an embodiment, the first node U01 and the second node N02 are connected via a Uu port.

[0364] As an embodiment, the first node U01 and the second node N02 are connected via an IAB port.

[0365] As an embodiment, the first node U01 and the second node N02 are connected via a PC5 interface.

[0366] As an embodiment, the dotted box F5.1 is optional.

[0367] As an embodiment, the dotted box F5.1 exists.

[0368] As an embodiment, the dotted box F5.1 does not exist.

[0369] As an embodiment, the dotted box F5.2 is optional.

[0370] As an embodiment, the dotted box F5.2 exists.

[0371] As an embodiment, the dotted box F5.2 does not exist.

[0372] As an embodiment, the dotted box F5.1 is before the dotted box F5.2.

[0373] As an embodiment, the dotted box F5.2 is before the dotted box F5.1.

[0374] As an embodiment, the order between the dotted box F5.2 and the dotted box F5.1 is not fixed.

[0375] As an embodiment, the dotted box F5.2 is independent of the dotted box F5.1.

[0376] As an embodiment, the first signaling includes a Timing Advance Command field, and the Timing Advance Command field indicates the timing advance of the first candidate cell.

[0377] As an embodiment, the first signaling is a Timing Advance Command MAC CE.

[0378] As an embodiment, the first signaling is an Absolute Timing Advance Command MAC CE.

[0379] As an embodiment, the C-RNTI of the first node in the first serving cell is used to scramble the PDCCH used to transmit the first signaling.

[0380] As an embodiment, the first signaling is a MAC RAR.

[0381] As an embodiment, the first signaling is a fallbackRAR.

[0382] As an embodiment, the first signaling is a MAC PDU.

[0383] As an embodiment, the first signaling includes a MAC subheader.

[0384] As an embodiment, the one MAC subheader includes the RAPID of the first Preamble sent by the first node,

[0385] As an embodiment, the RA-RNTI of the first node sending the first Preamble is used to scramble the PDCCH used to transmit the first signaling.

[0386] As an embodiment, the first signaling is a DCI.

[0387] As an embodiment, the first signaling includes a Timing Advance Command field and an identification field, the Timing Advance Command field indicates the timing advance of the first candidate cell, and the identification field indicates the identification of the first candidate cell.

[0388] As an embodiment, the identification field indicates the index of the first candidate cell.

[0389] As an embodiment, the one identification field indicates the index -1 of the first candidate cell.

[0390] As an embodiment, the first RRC message includes the index of the first candidate cell.

[0391] As an embodiment, the first signaling includes one or more Timing Advance Command fields and one or more identification fields; the one or more Timing Advance Command fields are equal in number and correspond one-to-one to the one or more identification fields; the one identification field is one of the one or more identification fields; the one Timing Advance Command field is one of the one or more Timing Advance Command fields.

[0392] As an embodiment, the configuration information of the first candidate cell includes an index of the first candidate cell.

[0393] As an embodiment, the index of the first candidate cell depends on the target configuration.

[0394] As an embodiment, the first signaling is received in the first process.

[0395] As an embodiment, when the first signaling is received, the first process is no longer in progress.

[0396] As an embodiment, the first signaling is received in a random access initiated on the first candidate cell.

[0397] As an embodiment, when the first signaling is received, the random access initiated on the first candidate cell is no longer in progress.

[0398] As an embodiment, the random access initiated on the first candidate cell includes sending a first Preamble; the first Preamble triggers the first signaling.

[0399] As an embodiment, the random access initiated on the first candidate cell includes sending a first preamble; after the first preamble is sent, receiving the first signaling.

[0400] As an embodiment, a second timer is started as a response to sending the first Preamble.

[0401] As a sub-embodiment of the above embodiment, the second timer is a ra-ResponseWindow.

[0402] As a sub-embodiment of the above embodiment, the second timer is a RAR window.

[0403] As a sub-embodiment of the above embodiment, the second timer is a random access response window.

[0404] As a sub-embodiment of the above embodiment, in response to expiration of the second timer, the first Preamble is resent.

[0405] As a sub-embodiment of the above embodiment, the first signaling is monitored while the second timer is running.

[0406] As a sub-embodiment of the above embodiment, the first signaling is received when the second timer is running.

[0407] As an embodiment, the first signaling is received on the first serving cell.

[0408] As a sub-embodiment of the above embodiment, the first node descrambles the first signaling using its C-RNTI on the first serving cell.

[0409] As a sub-embodiment of the above embodiment, the first node descrambles the first signaling using the RA-RNTI of the first Preamble on the first serving cell.

[0410] As a sub-embodiment of the above embodiment, the first node determines the first signaling MAC subheader according to the RAPID of the first preamble, and further determines the payload of the first signaling.

[0411] As an embodiment, the first signaling is received on the first candidate cell.

[0412] As a sub-embodiment of the above embodiment, the first node descrambles the first signaling using the RA-RNTI of the first Preamble on the first candidate cell.

[0413] As a sub-embodiment of the above embodiment, the first node determines the first signaling MAC subheader according to the RAPID of the first preamble, and further determines the payload of the first signaling.

[0414] As an embodiment, the first signaling includes one or more sub-PDUs, including a first sub-PDU; the first sub-PDU carries the timing advance of the first candidate cell; and the first node determines the first sub-PDU based on the RAPID of the first Preamble.

[0415] As an embodiment, the first Preamble is sent on the first candidate cell; as a response to sending the first Preamble, the first signaling is received on the first serving cell; and the first signaling indicates the timing advance of the first candidate cell.

[0416] As an embodiment, the first preamble is sent on the first candidate cell; as a response to sending the first preamble, the first signaling is received on the first candidate cell; and the first signaling indicates a timing advance of the first candidate cell.

[0417] As an embodiment, the first timer is a TimeAlignmentTimer for the first candidate cell.

[0418] As an embodiment, the first timer controls whether the uplink of the first candidate cell is aligned.

[0419] As an embodiment, when the first timer is running, the uplink timing advance of the first candidate cell is considered to be valid.

[0420] As an embodiment, when the first timer is not running, it is considered that the uplink synchronization with the first candidate cell is out of sync.

[0421] As an embodiment, a first receiver receives a first RRC message, which includes configuration information of a first candidate cell; wherein the first candidate cell is a candidate for a first serving cell, and the configuration information of the first candidate cell includes a target configuration and a first condition, and the first condition is a condition for the target configuration to be applied; a first processor sends a second signaling and receives a third signaling and initiates random access on the first candidate cell; wherein the sending of the second signaling depends on at least one of measurement or the first timer is not running; the first process is for early uplink synchronization of the first candidate cell; the first process includes initiating random access on the first candidate cell, and the first process includes sending a second signaling and receiving a third signaling; the second signaling triggers the third signaling; the third signaling triggers the initiation of random access on the first candidate cell.

[0422] As an embodiment, the second signaling is a UCI.

[0423] As an embodiment, the second signaling is a MAC CE.

[0424] As an embodiment, the second signaling is an RRC message.

[0425] As an embodiment, the third signaling includes the index of the first candidate cell.

[0426] As an embodiment, the third signaling is a DCI.

[0427] As an embodiment, the third signaling is a format 1_0DCI.

[0428] As an embodiment, the third signaling is a PDCCH order.

[0429] As an embodiment, the third signaling is an RRC message.

[0430] As an embodiment, the third signaling is received in response to sending the second signaling.

[0431] As an embodiment, random access is initiated on the first candidate cell in response to receiving the third signaling.

[0432] As an embodiment, the second signaling is a PRACH resource request.

[0433] As an embodiment, the second signaling includes measurement results of the first candidate cell.

[0434] As an embodiment, the measurement result of the first candidate cell refers to an L1 measurement result.

[0435] As an embodiment, the measurement result of the first candidate cell refers to an L3 measurement result.

[0436] As an embodiment, the second signaling indicates one or more reference signals with the best signal quality of the first candidate cell.

[0437] As a sub-embodiment of the above embodiment, the best signal quality refers to the largest downlink receiving RSRP.

[0438] As a sub-embodiment of the above embodiment, the best signal quality refers to the largest downlink reception RSRQ.

[0439] As a sub-embodiment of the above embodiment, the best signal quality refers to the largest downlink receiving SINR.

[0440] As a sub-embodiment of the above embodiment, the number of reference signals of the first candidate cell indicated by the second signaling is preconfigured.

[0441] As a sub-embodiment of the above embodiment, the number of reference signals of the first candidate cell indicated by the second signaling is configured by the first RRC message.

[0442] As an embodiment, the third signaling configures the random access initiated on the first candidate cell.

[0443] As an embodiment, the third signaling indicates the type of the random access.

[0444] As an embodiment, the third signaling indicates whether the random access is CBRA or CFRA.

[0445] As an embodiment, the third signaling configures the CFRA resources of the random access initiated on the first candidate cell.

[0446] As an embodiment, the third signaling indicates the random access Preamble index of the random access.

[0447] As a sub-embodiment of the above embodiment, the random access Preamble index is a single Preamble index; wherein the value of the single Preamble index may be 0b000000.

[0448] As a sub-embodiment of the above embodiment, the random access Preamble index is a single Preamble index; wherein the value of the single Preamble index is not 0b000000.

[0449] As a sub-embodiment of the above embodiment, the random access Preamble index is one or more Preamble indexes; wherein, any value of the one or more Preamble indexes is not 0b000000.

[0450] As an embodiment, the third signaling indicates the SSB resource index of the random access.

[0451] As a sub-embodiment of the above embodiment, the SSB resource index is an SSB index.

[0452] As a sub-embodiment of the above embodiment, the SSB resource index is one or more SSB indexes.

[0453] As a sub-embodiment of the above embodiment, the SSB resource index is an SSB index set.

[0454] As an embodiment, the third signaling indicates the PRACH mask index of the random access.

[0455] As an embodiment, the third signaling indicates the index of the first candidate cell.

[0456] As an embodiment, the third signaling indicates the CFRA resources of the random access initiated on the first candidate cell.

[0457] As a sub-embodiment of the above embodiment, the CFRA resource is one or more CFRA-SSB-Resource sub-domains.

[0458] As a sub-embodiment of the above embodiment, each CFRA-SSB-Resource sub-field includes an SSB index and a random access Preamble index.

[0459] As an embodiment, the third signaling configures a period for random access on the first candidate cell.

[0460] As an embodiment, the third signaling configures the validity period of the CFRA resources on the first candidate cell.

[0461] As an embodiment, a third timer is started or restarted in response to receiving the third signaling.

[0462] As an embodiment, in response to the expiration of the third timer, the CFRA resources configured by the third signaling are released.

[0463] As an embodiment, when random access on the first candidate cell is completed, the CFRA resources configured by the third signaling are released.

[0464] As an embodiment, when the first condition is met, the CFRA resources configured by the third signaling are released.

[0465] As an embodiment, when the target configuration is successfully applied, the CFRA resources configured by the third signaling are released.

[0466] As an embodiment, when it is confirmed that the first uplink transmission to the first candidate cell is successfully received, the CFRA resources configured by the third signaling are released.

[0467] As an embodiment, the second signaling is sent as a response to initiating the first process.

[0468] As an embodiment, the second signaling is sent in response to the measurement result of the first candidate cell meeting the first threshold.

[0469] As an embodiment, the second signaling is sent in response to the measurement result of the first serving cell meeting the third threshold.

[0470] As an embodiment, the second signaling is sent in response to the measurement result for the first candidate cell meeting the first threshold and the measurement result for the first serving cell meeting the third threshold.

[0471] As an embodiment, when the measurement result for the first candidate cell meets the first threshold, if there is no corresponding valid CFRA resource on the first candidate cell, the second signaling is sent; otherwise, the first process is initiated.

[0472] As an embodiment, when the measurement result for the first serving cell meets the third threshold, if there is no corresponding valid CFRA resource on the first candidate cell, the second signaling is sent; otherwise, the first process is initiated.

[0473] As an embodiment, when the measurement result for the first candidate cell meets the first threshold and the measurement result for the first serving cell meets the third threshold, if there is no corresponding valid CFRA resource on the first candidate cell, the second signaling is sent; otherwise, the first process is initiated.

[0474] As an embodiment, when the first timer is not running and the measurement result for the first candidate cell meets the first threshold, if there is no corresponding valid CFRA resource on the first candidate cell, the second signaling is sent; otherwise, the first process is initiated.

[0475] As an embodiment, when the first timer is not running and the measurement result for the first serving cell meets the third threshold, if there is no corresponding valid CFRA resource on the first candidate cell, the second signaling is sent; otherwise, the first process is initiated.

[0476] As an embodiment, when the first timer is not running and the measurement result for the first candidate cell meets the first threshold and the measurement result for the first serving cell meets the third threshold, if there is no corresponding valid CFRA resource on the first candidate cell, the second signaling is sent; otherwise, the first process is initiated.

[0477] As an embodiment, the corresponding valid CFRA resource refers to: for an SSB index in a CFRA resource, it is equal to or quasi-co-located with a reference signal in the measurement result of the first candidate cell; the measurement result of the reference signal meets the first threshold.

[0478] As an embodiment, the corresponding valid CFRA resource means that the reference signal measurement result of the first candidate cell corresponding to the SSB index in a CFRA resource meets a threshold.

[0479] As a sub-embodiment of the above embodiment, the reference signal of the first candidate cell is SSB.

[0480] As a sub-embodiment of the above embodiment, the threshold has a default value.

[0481] As a sub-embodiment of the above embodiment, the threshold is preconfigured.

[0482] As a sub-embodiment of the above embodiment, the threshold is configured by the first RRC message.

[0483] As an embodiment, when the first timer is not running and the first condition is met, if there is no corresponding valid CFRA resource on the first candidate cell, the second signaling is sent; otherwise, an LTM cell handover to the first candidate cell is performed.

[0484] As a sub-embodiment of the above embodiment, the LTM cell handover refers to conditional LTM cell handover.

[0485] As a sub-embodiment of the above embodiment, the second signaling includes an indication that the first condition is met.

[0486] As a sub-embodiment of the above embodiment, the third signaling is received in response to sending the second signaling.

[0487] As a sub-embodiment of the above embodiment, the third signaling is an LTM Cell Switch Command MAC CE.

[0488] As a sub-embodiment of the above embodiment, the third signaling instructs the first node LTM cell to switch to the first candidate cell.

[0489] As an embodiment, when the first timer is running and the first condition is met, a conditional LTM cell handover to the first candidate cell is performed.

[0490] As an embodiment, a first receiver receives a first RRC message, which includes configuration information of a first candidate cell; wherein the first candidate cell is a candidate for a first serving cell, and the configuration information of the first candidate cell includes a target configuration and a first condition, and the first condition is a condition for the target configuration to be applied; a first processor sends a second signaling and receives a third signaling and initiates random access on the first candidate cell; wherein the sending of the second signaling depends on at least one of measurement or the first timer is not running; the first process includes initiating random access on the first candidate cell, and the first process includes sending a second signaling and receiving a third signaling; the second signaling triggers the third signaling; and the third signaling triggers the initiation of random access on the first candidate cell.

[0491] As a sub-embodiment of the above embodiment, the first process is LTM cell switching for the first candidate cell.

[0492] As a sub-embodiment of the above embodiment, the second signaling includes a measurement result of the first candidate cell.

[0493] As a sub-embodiment of the above embodiment, the second signaling includes a measurement result of the first serving cell.

[0494] As a sub-embodiment of the above embodiment, the third signaling includes a fallback indication.

[0495] As a subsidiary embodiment of the above sub-embodiment, the fallback indication instructs the first node to fall back to RACH-based LTM cell handover from the early uplink synchronization of the LTM cell of the first candidate cell.

[0496] As a subsidiary embodiment of the above sub-embodiment, the fallback indication instructs the first node to fall back to the LTM cell handover after the conditional LTM cell handover to the first candidate cell.

[0497] As a subsidiary embodiment of the above sub-embodiment, the fallback indication instructs the first node to fall back to the LTM cell handover from the conditional LTM cell handover to the first candidate cell; and the third signaling is a handover command for the LTM cell handover.

[0498] As a sub-embodiment of the above embodiment, the third signaling includes CFRA resources on the first candidate cell.

[0499] As a sub-embodiment of the above embodiment, the third signaling instructs the first node to perform CBRA on the first candidate cell.

[0500] As a sub-embodiment of the above embodiment, the third signaling instructs the first node to perform early uplink synchronization on the first candidate cell.

[0501] As a sub-embodiment of the above embodiment, the third signaling instructs the first node to perform LTM cell switching on the first candidate cell.

[0502] As a sub-embodiment of the above embodiment, the third signaling instructs the first node to perform UE-based uplink timing advance measurement on the first candidate cell.

[0503] As a sub-embodiment of the above embodiment, the third signaling includes the first domain.

[0504] As a subsidiary embodiment of the above sub-embodiment, the first field indicates the usage of the CFRA resource in the first signaling.

[0505] As a subsidiary embodiment of the above sub-embodiment, the first field indicates that the CFRA resource in the first signaling is used for early uplink synchronization.

[0506] As a subsidiary embodiment of the above sub-embodiment, the first field indicates that the CFRA resource in the first signaling is used for RACH-based LTM cell switching.

[0507] As a subsidiary embodiment of the above sub-embodiment, the first field instructs the first node to perform early uplink synchronization on the first candidate cell.

[0508] As a subsidiary embodiment of the above sub-embodiment, the first field instructs the first node to perform LTM cell switching on the first candidate cell.

[0509] As a subsidiary embodiment of the above sub-embodiment, the first domain instructs the first node to perform UE-based uplink timing advance measurement on the first candidate cell.

[0510] Example 6

[0511] Example 6 illustrates a schematic diagram of a first threshold according to an embodiment of the present application, as shown in FIG6 .

[0512] In embodiment 6, the initiation of the first process depends on the measurement result of the first candidate cell meeting a first threshold; the first RRC message includes the first threshold.

[0513] As an embodiment, the initiating of the first process depends on at least one of measurement or the first timer is not running, which means that the initiating of the first process depends on the measurement result of the first candidate cell meeting the first threshold.

[0514] As an embodiment, when the first RRC message includes the first threshold, the initiation of the first process depends on the measurement result of the first candidate cell meeting the first threshold.

[0515] As an embodiment, the measurement for the first candidate cell is L1 measurement.

[0516] As an embodiment, the measurement for the first candidate cell is L3 measurement.

[0517] As an embodiment, the measurement of the first candidate cell includes L1 measurement.

[0518] As an embodiment, the measurement of the first candidate cell includes L3 measurement.

[0519] As an embodiment, the measurement of the first candidate cell includes SSB measurement.

[0520] As an embodiment, the measurement of the first candidate cell includes CSI-RS measurement.

[0521] As an embodiment, the measurement of the first candidate cell includes positioning.

[0522] As an embodiment, the first RRC message configures the measurement for the first candidate cell.

[0523] As an embodiment, the first RRC message configures the first threshold.

[0524] As an embodiment, the first RRC message configures a designated reference signal of the first candidate cell for measurement.

[0525] As an embodiment, the measurement result for the first candidate cell refers to the measurement result of the certain designated reference signal of the first candidate cell.

[0526] As an embodiment, the first RRC message configures one or more reference signals of the first candidate cell for measurement.

[0527] As an embodiment, the measurement result for the first candidate cell refers to the best one of the measurement results of one or more reference signals of the first candidate cell.

[0528] As an embodiment, that the measurement result for the first candidate cell satisfies a first threshold means that an absolute value of a change in the measurement result for the first candidate cell is greater than or not less than the first threshold.

[0529] As an embodiment, that the measurement result for the first candidate cell satisfies a first threshold means that a change in the measurement result for the first candidate cell is greater than or not less than the first threshold.

[0530] As an embodiment, the change in the measurement result for the first candidate cell refers to: a change between a previous measurement result for the first candidate cell and a current measurement result for the first candidate cell.

[0531] As an embodiment, the change in the measurement result for the first candidate cell refers to: a difference between a previous measurement result for the first candidate cell and a current measurement result for the first candidate cell.

[0532] As an embodiment, the change in the measurement result for the first candidate cell refers to: a difference between a current measurement result for the first candidate cell and a previous measurement result for the first candidate cell.

[0533] As an embodiment, the change in the measurement result for the first candidate cell refers to: a difference between a current measurement result for the first candidate cell and a measurement result for the first candidate cell before receiving the first RRC message.

[0534] As an embodiment, that the measurement result for the first candidate cell satisfies a first threshold means that: the measurement result for the first candidate cell is greater than or not less than the first threshold.

[0535] As an embodiment, that the measurement result for the first candidate cell satisfies a first threshold means that the measurement result for the first candidate cell is better than or not worse than the first threshold.

[0536] As an embodiment, the initiation of the first process being dependent on the measurement result for the first candidate cell satisfying the first threshold means: initiating the first process in response to the measurement result for the first candidate cell satisfying the first threshold.

[0537] As an embodiment, the initiation of the first process being dependent on the measurement result for the first candidate cell satisfying the first threshold means: initiating the first process in response to the measurement result for the first candidate cell satisfying the first threshold.

[0538] As an embodiment, the first threshold is dedicated to early uplink synchronization.

[0539] As an embodiment, the first threshold is dedicated to the timing advance measurement based on the UE.

[0540] As an embodiment, the first threshold value is independent of the first condition.

[0541] As an embodiment, the first RRC message includes the first threshold, which means that: the first RRC message configures the configuration information of the first candidate cell; the configuration information of the first candidate cell includes the ltm-EarlyUL-SyncConfig domain or the ltm-EarlyUL-SyncConfigSUL domain; the ltm-EarlyUL-SyncConfig domain or the ltm-EarlyUL-SyncConfigSUL domain includes the first threshold.

[0542] As an embodiment, the first threshold depends on the first condition.

[0543] As a sub-embodiment of the above embodiment, the first condition includes a second threshold value, and the second threshold value is used to evaluate the measurement result of the first candidate cell.

[0544] As a sub-embodiment of the above embodiment, the first threshold is represented by an offset relative to the second threshold.

[0545] As a sub-embodiment of the above embodiment, the unit of the offset is dB.

[0546] As a sub-embodiment of the above embodiment, the offset is a negative offset.

[0547] As a sub-embodiment of the above embodiment, the first threshold is equal to the sum of the first threshold and the one offset.

[0548] As a sub-embodiment of the above embodiment, the first RRC message including the first threshold means that the first RRC message includes the second threshold, and the first threshold is represented by the offset of the first threshold relative to the second threshold.

[0549] As a sub-embodiment of the above embodiment, the first RRC message includes the first threshold, which means that: the first RRC message configures the configuration information of the first candidate cell; the configuration information of the first candidate cell includes the ltm-EarlyUL-SyncConfig domain or the ltm-EarlyUL-SyncConfigSUL domain; the ltm-EarlyUL-SyncConfig domain or the ltm-EarlyUL-SyncConfigSUL domain includes the offset.

[0550] As an embodiment, the measurement result for the first candidate cell meeting the first threshold includes detecting that the position of the first node enters or belongs to a first area.

[0551] As a sub-embodiment of the above embodiment, the first area is an area associated with the first candidate cell.

[0552] As a sub-embodiment of the above embodiment, the first area is configured by the first RRC message.

[0553] Example 7

[0554] Example 7 illustrates a schematic diagram of the second threshold according to an embodiment of the present application, as shown in FIG7 .

[0555] In embodiment 7, the first condition includes that the measurement result of the first candidate cell meets a second threshold; the first RRC message includes the second threshold; and the first threshold and the second threshold are different.

[0556] As an embodiment, the first threshold depends on the first condition.

[0557] As an embodiment, the first condition depends on the first threshold.

[0558] As an embodiment, the first RRC message includes the first threshold and the second threshold.

[0559] As an embodiment, the configuration information of the first candidate cell includes the first threshold and the second threshold.

[0560] As an embodiment, the first condition is that the measurement result of the first candidate cell meets the second threshold.

[0561] As an embodiment, the measurement result for the first candidate cell is L1 measurement.

[0562] As an embodiment, the initiation of the first process depends on the measurement result for the first candidate cell meeting the first threshold; the first condition includes that the measurement result for the first candidate cell meets the second threshold.

[0563] As an embodiment, the measurement result of the first candidate cell corresponding to the first threshold and the measurement result of the first candidate cell corresponding to the second threshold are measurement quantities of the same reference signal.

[0564] As a sub-embodiment of the above embodiment, the measurement result of the first candidate cell corresponding to the first threshold and the measurement result of the first candidate cell corresponding to the second threshold are both measurements of the SSB of the first candidate cell.

[0565] As a sub-embodiment of the above embodiment, the measurement result of the first candidate cell corresponding to the first threshold and the measurement result of the first candidate cell corresponding to the second threshold are both measurements of the CSI-RS of the first candidate cell.

[0566] As a sub-embodiment of the above embodiment, the measurement result of the first candidate cell corresponding to the first threshold and the measurement result of the first candidate cell corresponding to the second threshold are both measurements of the SSB of the first candidate cell or both are measurements of the CSI-RS of the first candidate cell.

[0567] As a sub-embodiment of the above embodiment, the measurement result of the first candidate cell corresponding to the first threshold and the measurement result of the first candidate cell corresponding to the second threshold are the same measurement quantity of the same reference signal.

[0568] As a subsidiary embodiment of the above sub-embodiment, the measurement result of the first candidate cell corresponding to the first threshold and the measurement result of the first candidate cell corresponding to the second threshold are both RSRP measurements of the SSB of the first candidate cell.

[0569] As a subsidiary embodiment of the above sub-embodiment, the measurement result of the first candidate cell corresponding to the first threshold and the measurement result of the first candidate cell corresponding to the second threshold are both RSRQ measurements of the SSB of the first candidate cell.

[0570] As an embodiment, the first RRC message including the second threshold means that: the first RRC message includes a condExecutionCond field; and the condExecutionCond field includes the second threshold.

[0571] As a sub-embodiment of the above embodiment, the condExecutionCond field is the first condition.

[0572] As a sub-embodiment of the above embodiment, the first RRC message includes a condRRCReconfig field; the condRRCReconfig field includes the configuration information of the first candidate cell.

[0573] As an embodiment, the first RRC message including the second threshold means that: the first RRC message includes a condExecutionCondLTM field; and the condExecutionCondLTM field includes the second threshold.

[0574] As a sub-embodiment of the above embodiment, the condExecutionCondLTM field is the first condition.

[0575] As a sub-embodiment of the above embodiment, the first RRC message includes an LTMcondRRCReconfig field; the LTMcondRRCReconfig field includes the configuration information of the first candidate cell.

[0576] As an embodiment, the first threshold value is different from the second threshold value, which means that: the measurement result of the first candidate cell corresponding to the first threshold value and the measurement result of the first candidate cell corresponding to the second threshold value are both the same reference signal and the same measurement quantity; and the values ​​of the first threshold value and the second threshold value are different.

[0577] As a sub-embodiment of the above embodiment, the first threshold value depends on the first offset and the second threshold value.

[0578] As a sub-embodiment of the above embodiment, the first threshold is equal to the sum of the second threshold and the first offset.

[0579] As a sub-embodiment of the above embodiment, the first offset is not equal to 0.

[0580] As a sub-embodiment of the above embodiment, the first offset is less than 0 or not greater than 0.

[0581] As a sub-embodiment of the above embodiment, the first offset is configured by a first RRC message.

[0582] As a sub-embodiment of the above embodiment, the first threshold is lower than the second threshold.

[0583] As a sub-embodiment of the above embodiment, the condition that the measurement result of the first candidate cell satisfies the first threshold is looser than the condition that the measurement result of the first candidate cell satisfies the second threshold.

[0584] As a sub-embodiment of the above embodiment, when the measurement result of one of the first candidate cells meets the second threshold, it must also meet the first threshold.

[0585] As a sub-embodiment of the above embodiment, when the measurement result of one of the first candidate cells meets the first threshold, it does not necessarily meet the second threshold.

[0586] As an embodiment, the initiation of the first process depends on the measurement result for the first candidate cell satisfying the first threshold; the first RRC message includes the first threshold; the first condition includes that the measurement result for the first candidate cell satisfies the second threshold and the first condition includes that the measurement result for the first serving cell satisfies the fourth threshold.

[0587] As a sub-embodiment of the above embodiment, the fourth threshold is configured by the first RRC message.

[0588] As a sub-embodiment of the above embodiment, the measurement result of the first candidate cell corresponding to the fourth threshold is L1 measurement.

[0589] Example 8

[0590] Example 8 illustrates a schematic diagram of the third threshold according to an embodiment of the present application, as shown in FIG8 .

[0591] In embodiment 8, the initiation of the first process depends on the measurement result of the first serving cell meeting a third threshold; and the first RRC message includes the third threshold.

[0592] In one embodiment, the measurement for the first serving cell is L1 measurement.

[0593] As an embodiment, the measurement for the first serving cell is L3 measurement.

[0594] As an embodiment, the measurement for the first serving cell includes L1 measurement.

[0595] As an embodiment, the measurement for the first serving cell includes L3 measurement.

[0596] As an embodiment, the measurement for the first serving cell includes SSB measurement.

[0597] As an embodiment, the measurement for the first serving cell includes CSI-RS measurement.

[0598] As an embodiment, the measurement for the first serving cell includes positioning.

[0599] As an embodiment, the initiation of the first process depends on the measurement result for the first candidate cell meeting the first threshold, and the initiation of the first process depends on the measurement result for the first serving cell meeting the third threshold.

[0600] As an embodiment, the initiation of the first process depends on the measurement result for the first candidate cell satisfying the first threshold, and the initiation of the first process depends on the measurement result for the first serving cell satisfying the third threshold; the first condition includes that the measurement result for the first candidate cell satisfies the second threshold.

[0601] As an embodiment, that the measurement result for the first serving cell satisfies a third threshold means that an absolute value of a change in the measurement result for the first serving cell is greater than or not less than the third threshold.

[0602] As an embodiment, that the measurement result for the first serving cell satisfies a third threshold means that a change in the measurement result for the first serving cell is greater than or not less than the third threshold.

[0603] As an embodiment, the change in the measurement result for the first serving cell refers to: a change between a previous measurement result for the first serving cell and a current measurement result for the first serving cell.

[0604] As an embodiment, the change in the measurement result for the first serving cell refers to: a difference between a previous measurement result for the first serving cell and a current measurement result for the first serving cell.

[0605] As an embodiment, the change in the measurement result for the first serving cell refers to: a difference between a current measurement result for the first serving cell and a previous measurement result for the first serving cell.

[0606] As an embodiment, the change in the measurement result for the first serving cell refers to: a difference between a current measurement result for the first serving cell and a measurement result for the first serving cell before receiving the first RRC message.

[0607] As an embodiment, that the measurement result for the first serving cell satisfies a third threshold means that the measurement result for the first serving cell is less than or not greater than the third threshold.

[0608] As an embodiment, that the measurement result for the first serving cell satisfies a third threshold means that the measurement result for the first serving cell is worse than or not better than the third threshold.

[0609] As an embodiment, the third threshold is dedicated to early uplink synchronization.

[0610] As an embodiment, the third threshold is independent of the first condition.

[0611] As an embodiment, the first RRC message includes the third threshold, which means that: the first RRC message configures the configuration information of the first candidate cell; the configuration information of the first candidate cell includes the ltm-EarlyUL-SyncConfig domain or the ltm-EarlyUL-SyncConfigSUL domain; the ltm-EarlyUL-SyncConfig domain or the ltm-EarlyUL-SyncConfigSUL domain includes the first threshold.

[0612] As an embodiment, the third threshold value depends on the first condition.

[0613] As a sub-embodiment of the above embodiment, the first condition includes the fourth threshold, and the fourth threshold is used to evaluate the measurement result of the first serving cell.

[0614] As a sub-embodiment of the above embodiment, the third threshold is represented by an offset of the third threshold relative to the fourth threshold.

[0615] As a sub-embodiment of the above embodiment, the unit of the offset is dB.

[0616] As a sub-embodiment of the above embodiment, the offset is a positive offset.

[0617] As a sub-embodiment of the above embodiment, the third threshold is equal to the sum of the fourth threshold and the one offset.

[0618] As a sub-embodiment of the above embodiment, the first RRC message including the third threshold means that: the first RRC message includes the fourth threshold, and the third threshold is represented by the offset of the third threshold relative to the fourth threshold.

[0619] As a sub-embodiment of the above embodiment, the first RRC message includes the third threshold, which means that: the first RRC message configures the configuration information of the first candidate cell; the configuration information of the first candidate cell includes the ltm-EarlyUL-SyncConfig domain or the ltm-EarlyUL-SyncConfigSUL domain; the ltm-EarlyUL-SyncConfig domain or the ltm-EarlyUL-SyncConfigSUL domain includes the offset.

[0620] As an embodiment, the measurement result for the first serving cell meeting the third threshold includes detecting that the location of the first node leaves or does not belong to the second area.

[0621] As a sub-embodiment of the above embodiment, the second area is an area associated with the first serving cell.

[0622] As a sub-embodiment of the above embodiment, the second area is configured by the first RRC message.

[0623] Example 9

[0624] Example 9 illustrates a schematic diagram of a fourth threshold according to an embodiment of the present application, as shown in FIG9 .

[0625] In embodiment 9, the first condition includes that the measurement result of the first serving cell meets a fourth threshold; the first RRC message includes the fourth threshold; and the third threshold is different from the fourth threshold.

[0626] As an embodiment, the initiation of the first process depends on the measurement result for the first candidate cell satisfying the first threshold, and the initiation of the first process depends on the measurement result for the first serving cell satisfying the third threshold; the first condition includes the measurement result for the first serving cell satisfying the fourth threshold.

[0627] As an embodiment, the initiation of the first process depends on the measurement result for the first candidate cell satisfying the first threshold, and the initiation of the first process depends on the measurement result for the first serving cell satisfying the third threshold; the first condition includes that the measurement result for the first candidate cell satisfies the second threshold, and the first condition includes that the measurement result for the first serving cell satisfies the fourth threshold.

[0628] As an embodiment, the third threshold value depends on the first condition.

[0629] As an embodiment, the first condition depends on the third threshold.

[0630] As an embodiment, the first RRC message includes the third threshold and the fourth threshold.

[0631] As an embodiment, the configuration information of the first candidate cell includes the third threshold and the fourth threshold.

[0632] As an embodiment, the first condition is that the measurement result of the first serving cell meets the fourth threshold.

[0633] As an embodiment, the measurement result for the first serving cell is L1 measurement.

[0634] As an embodiment, the initiation of the first process depends on the measurement result for the first serving cell meeting the third threshold; the first condition includes that the measurement result for the first serving cell meets the fourth threshold.

[0635] As an embodiment, the measurement result of the first serving cell corresponding to the third threshold and the measurement result of the first serving cell corresponding to the fourth threshold are measurement quantities of the same reference signal.

[0636] As a sub-embodiment of the above embodiment, the measurement result of the first serving cell corresponding to the third threshold and the measurement result of the first serving cell corresponding to the fourth threshold are both measurements of the SSB of the first serving cell.

[0637] As a sub-embodiment of the above embodiment, the measurement result of the first serving cell corresponding to the third threshold and the measurement result of the first serving cell corresponding to the fourth threshold are both measurements of the CSI-RS of the first serving cell.

[0638] As a sub-embodiment of the above embodiment, the measurement result of the first serving cell corresponding to the third threshold and the measurement result of the first serving cell corresponding to the fourth threshold are both measurements of the SSB of the first serving cell or both are measurements of the CSI-RS of the first serving cell.

[0639] As a sub-embodiment of the above embodiment, the measurement result of the first serving cell corresponding to the third threshold and the measurement result of the first serving cell corresponding to the fourth threshold are the same measurement quantity of the same reference signal.

[0640] As a subsidiary embodiment of the above sub-embodiment, the measurement result of the first serving cell corresponding to the third threshold and the measurement result of the first serving cell corresponding to the fourth threshold are both RSRP measurements of the SSB of the first serving cell.

[0641] As a subsidiary embodiment of the above sub-embodiment, the measurement result of the first serving cell corresponding to the third threshold and the measurement result of the first serving cell corresponding to the fourth threshold are both RSRQ measurements of the SSB of the first serving cell.

[0642] As an embodiment, the first RRC message including the fourth threshold means that: the first RRC message includes a condExecutionCond field; and the condExecutionCond field includes the fourth threshold.

[0643] As a sub-embodiment of the above embodiment, the condExecutionCond field is the first condition.

[0644] As a sub-embodiment of the above embodiment, the first RRC message includes a condRRCReconfig field; the condRRCReconfig field includes the configuration information of the first candidate cell.

[0645] As an embodiment, the first RRC message including the fourth threshold means that: the first RRC message includes a condExecutionCondLTM field; and the condExecutionCondLTM field includes the fourth threshold.

[0646] As a sub-embodiment of the above embodiment, the condExecutionCondLTM field is the first condition.

[0647] As a sub-embodiment of the above embodiment, the first RRC message includes an LTMcondRRCReconfig field; the LTMcondRRCReconfig field includes the configuration information of the first candidate cell.

[0648] As an embodiment, the third threshold is different from the fourth threshold, which means that: the measurement result of the first serving cell corresponding to the third threshold and the measurement result of the first serving cell corresponding to the fourth threshold are both the same reference signal and the same measurement quantity; and the values ​​of the third threshold and the fourth threshold are different.

[0649] As a sub-embodiment of the above embodiment, the third threshold value depends on the second offset and the fourth threshold value.

[0650] As a sub-embodiment of the above embodiment, the third threshold is equal to the sum of the fourth threshold and the second offset.

[0651] As a sub-embodiment of the above embodiment, the second offset is not equal to 0.

[0652] As a sub-embodiment of the above embodiment, the second offset is less than 0 or not greater than 0.

[0653] As a sub-embodiment of the above embodiment, the second offset is configured by a first RRC message.

[0654] As a sub-embodiment of the above embodiment, the third threshold is lower than the fourth threshold.

[0655] As a sub-embodiment of the above embodiment, the condition for the measurement result of the first serving cell to meet the third threshold is looser than the condition for meeting the fourth threshold.

[0656] As a sub-embodiment of the above embodiment, when a measurement result of the first serving cell meets the fourth threshold, it must also meet the third threshold.

[0657] As a sub-embodiment of the above embodiment, when the measurement result of one of the first candidate cells meets the third threshold, it does not necessarily meet the fourth threshold.

[0658] Example 10

[0659] Embodiment 10 illustrates a structural block diagram of a processing device in a first node according to an embodiment of the present application, as shown in FIG10 . In FIG10 , a first processor 1000 in the first node includes a first transmitter 1001 and a first receiver 1002 .

[0660] The first receiver 1002 receives a first RRC message, wherein the first RRC message includes a first condition and a target configuration of the first candidate cell, where the first condition is a condition for applying the target configuration of the first candidate cell;

[0661] The first processor 1000 initiates a first process, wherein the first process includes initiating random access on the first candidate cell;

[0662] In embodiment 10, the initiation of the first process depends on at least one of measurement or the first timer is not running; the first process is for early uplink synchronization of the first candidate cell.

[0663] As an embodiment, the initiation of the first process depends on the measurement result of the first candidate cell meeting a first threshold; the first RRC message includes the first threshold.

[0664] As an embodiment, the first condition includes that the measurement result for the first candidate cell meets a second threshold; the first RRC message includes the second threshold; and the first threshold and the second threshold are different.

[0665] As an embodiment, the initiation of the first process depends on the measurement result of the first serving cell meeting a third threshold; the first RRC message includes the third threshold.

[0666] As an embodiment, the first condition includes that the measurement result for the first serving cell meets a fourth threshold; the first RRC message includes the fourth threshold; and the third threshold and the fourth threshold are different.

[0667] As an embodiment, the first receiver 1002 receives a first signaling; the first processor 1000 starts the first timer in response to the reception of the first signaling; the first signaling indicates the timing advance of the first candidate cell.

[0668] As an embodiment, the first process includes sending second signaling and receiving third signaling; the second signaling triggers the third signaling; and the third signaling triggers random access on the first candidate cell.

[0669] As an embodiment, the first process includes monitoring a random access response on the first candidate cell in the random access; and the first RRC message includes time-frequency resources for monitoring the random access response.

[0670] As an embodiment, the first receiver 1002 includes at least one of the antenna 452 or the receiver 454 or the multi-antenna receiving processor 458 or the receiving processor 456 or the controller / processor 459 or the memory 460 or the data source 467 in FIG. 4 of the present application.

[0671] As an embodiment, the first receiver 1002 includes at least the antenna 452 and the receiver 454 in FIG. 4 of the present application.

[0672] As an embodiment, the first transmitter 1001 includes at least one of the antenna 452 or transmitter 454 or multi-antenna transmission processor 457 or transmission processor 468 or controller / processor 459 or memory 460 or data source 467 in FIG4 of the present application.

[0673] As an embodiment, the first transmitter 1001 includes at least the antenna 452 and the transmitter 454 in FIG. 4 of the present application.

[0674] Example 11

[0675] Embodiment 11 illustrates a structural block diagram of a processing device in a second node according to an embodiment of the present application, as shown in FIG11. In FIG11, the processing device 1100 in the second node includes a second transmitter 1101 and a second receiver 1102.

[0676] The second transmitter 1101 sends a first RRC message; the first RRC message includes a first condition and a target configuration of the first candidate cell, where the first condition is a condition for applying the target configuration of the first candidate cell;

[0677] In embodiment 11, the receiver of the first RRC message initiates a first process; the first process includes initiating random access on the first candidate cell; the initiation of the first process depends on at least one of measurement or the first timer is not running; the first process is for early uplink synchronization of the first candidate cell.

[0678] As an embodiment, the initiation of the first process depends on the measurement result of the first candidate cell meeting a first threshold; the first RRC message includes the first threshold.

[0679] As an embodiment, the first condition includes that the measurement result for the first candidate cell meets a second threshold; the first RRC message includes the second threshold; and the first threshold and the second threshold are different.

[0680] As an embodiment, the initiation of the first process depends on the measurement result of the first serving cell meeting a third threshold; the first RRC message includes the third threshold.

[0681] As an embodiment, the first condition includes that the measurement result for the first serving cell meets a fourth threshold; the first RRC message includes the fourth threshold; and the third threshold and the fourth threshold are different.

[0682] As an embodiment, the first process includes monitoring a random access response on the first candidate cell in the random access; and the first RRC message includes time-frequency resources for monitoring the random access response.

[0683] As an embodiment, the second transmitter 1101 sends a first signaling; the first signaling indicates the timing advance of the first candidate cell.

[0684] As an embodiment, the second receiver 1102 receives a second signaling; in response to receiving the second signaling, the second transmitter 1101 sends a third signaling; the third signaling triggers the receiver of the third signaling to initiate random access on the first candidate cell.

[0685] As an embodiment, the second transmitter 1101 includes at least one of the antenna 420 or the transmitter 418 or the multi-antenna transmission processor 471 or the transmission processor 416 or the controller / processor 475 or the memory 476 in FIG. 4 of the present application.

[0686] As an embodiment, the second transmitter 1101 includes at least the antenna 420 and the transmitter 418 in FIG. 4 of the present application.

[0687] As an embodiment, the second receiver 1102 includes at least one of the antenna 420 or the receiver 418 or the multi-antenna receiving processor 472 or the receiving processor 470 or the controller / processor 475 or the memory 476 in FIG. 4 of the present application.

[0688] As an embodiment, the second receiver 1102 includes at least the antenna 420 and the receiver 418 in FIG. 4 of the present application.

[0689] Example 12

[0690] Embodiment 12 illustrates a schematic diagram of an artificial intelligence processing system according to an embodiment of the present application, as shown in FIG12. FIG12 includes a first module, a second module, a third module, a fourth module and a fifth module.

[0691] In Example 12, the first module sends a first data set to the second module, the first module sends a second data set to the third module, the first module sends a third data set to the fifth module, the fifth module sends a first type parameter group to the second module, the fifth module sends a second type parameter group to the third module, the fifth module sends a third type parameter group to the fourth module, the second module sends a fourth type parameter group to the fourth module, and the fourth module sends a fifth type parameter group to the third module.

[0692] As an embodiment, the first module, the second module, the third module, the fourth module and the fifth module all belong to the first node.

[0693] The above method avoids air interface signaling interaction and shortens transmission delay.

[0694] As an embodiment, any module among the first module, the second module, the third module, the fourth module and the fifth module does not belong to the first node.

[0695] The above method reduces the hardware complexity of the first node.

[0696] As an embodiment, at least the first module among the first module, the second module, the third module, the fourth module and the fifth module belongs to the first node; and at least one module among the first module, the second module, the third module, the fourth module and the fifth module does not belong to the first node.

[0697] The above method balances the hardware complexity and transmission delay of the first node.

[0698] As an embodiment, the first module is used for data collection.

[0699] As an embodiment, the first module is responsible for data collection.

[0700] As an embodiment, the first module has a data collection function.

[0701] As an embodiment, the second module is used for model training.

[0702] As an embodiment, the second module is responsible for model training.

[0703] As an embodiment, the second module has a model training function.

[0704] As an embodiment, the second module performs AI / ML model training.

[0705] As an embodiment, the second module performs validation.

[0706] As an embodiment, the second module performs testing.

[0707] As an embodiment, the second module generates model performance metrics.

[0708] As an embodiment, the second module is responsible for data preparation.

[0709] As an embodiment, the data preparation includes at least one of data pre-processing, cleaning, formatting, or transformation.

[0710] As an embodiment, the third module is used for inference.

[0711] As an embodiment, the third module has a reasoning function.

[0712] As an embodiment, the third module is responsible for reasoning.

[0713] As an embodiment, the fourth module is used for model storage.

[0714] As an embodiment, the fourth module has a model storage function.

[0715] As an embodiment, the fourth module is responsible for storing the trained model.

[0716] As an embodiment, the fourth module is responsible for storing trained models that can be used to perform reasoning processing.

[0717] As an embodiment, the fifth module is used for management.

[0718] As an embodiment, the fifth module is responsible for management.

[0719] As an embodiment, the fifth module has a management function.

[0720] As an embodiment, the first data set is training data.

[0721] As an embodiment, the second data set is inference data.

[0722] As an embodiment, the third data set is monitoring data.

[0723] As an embodiment, the first parameter group includes monitoring output.

[0724] As an embodiment, the second type of parameter group includes management instructions.

[0725] As an embodiment, the second type of parameter group is used for fine-tuning of the inference function.

[0726] As an embodiment, the second type of parameter group includes an identifier of the model.

[0727] As an embodiment, the second type of parameter group is used to select a model.

[0728] As an embodiment, the second type of parameter group is used for switching models.

[0729] As an embodiment, the second type of parameter group is used to activate / deactivate the model.

[0730] As an embodiment, the second type of parameter group is used to fall back from AI-ML operation to non-AI-ML operation.

[0731] As an embodiment, the third type of parameter group includes a model transfer request (Model Transfer Request).

[0732] As an embodiment, the third parameter group includes a model delivery request (Model Delivery Request).

[0733] As an embodiment, the fourth parameter group includes a trained model (Trained Model).

[0734] As an embodiment, the fourth parameter group includes an updated model (Updated Model).

[0735] As an embodiment, the fourth type of parameter group indicates the identification of the model.

[0736] As an embodiment, the fifth parameter group includes model transfer.

[0737] As an embodiment, the fifth parameter group includes model delivery.

[0738] As an embodiment, the fifth type of parameter group indicates the identification of the model.

[0739] As an embodiment, the first type of output includes a monitoring output.

[0740] As an embodiment, the first type of output exists.

[0741] As an embodiment, the first type of output does not exist.

[0742] As an embodiment, the second type of output includes inference output.

[0743] As an embodiment, the second type of output is used by the fifth module to monitor the performance of the AI / ML model.

[0744] As an embodiment, the second type of output is used by the fifth module to monitor the performance of the AI / ML function.

[0745] As an embodiment, the second type of output exists.

[0746] As an embodiment, the second type of output does not exist.

[0747] As an embodiment, the artificial intelligence processing system generates or assists in generating at least one of a judgment on whether to initiate the first process or a judgment on whether the first condition is met.

[0748] As an embodiment, the fifth module generates or assists in generating at least one of a judgment on whether to initiate the first process or a judgment on whether the first condition is met.

[0749] As an embodiment, the third module generates or assists in generating at least one of a judgment on whether to initiate the first process or a judgment on whether the first condition is met.

[0750] As an embodiment, the second type of output includes at least one of a determination on whether to initiate the first process or a determination on whether the first condition is satisfied.

[0751] As an embodiment, at least one of the first data set or the second data set includes the first RRC message.

[0752] As an embodiment, at least one of the first data set or the second data set includes the target configuration.

[0753] As an embodiment, at least one of the first data set or the second data set includes the first condition.

[0754] As an embodiment, at least one of the first data set or the second data set includes the measurement result for the first candidate cell.

[0755] As an embodiment, at least one of the first data set or the second data set includes the measurement results for the first serving cell.

[0756] As an embodiment, at least one of the first data set or the second data set includes the first signaling.

[0757] As an embodiment, at least one of the first data set or the second data set includes the third signaling.

[0758] As an embodiment, at least one of the first data set or the second data set includes the first threshold.

[0759] As an embodiment, at least one of the first data set or the second data set includes the second threshold.

[0760] As an embodiment, at least one of the first data set or the second data set includes the third threshold.

[0761] As an embodiment, at least one of the first data set or the second data set includes the fourth threshold.

[0762] As an embodiment, at least one of the first data set, the second data set, or the third data set includes the first RRC message.

[0763] As an embodiment, at least one of the first data set, the second data set, or the third data set includes the target configuration.

[0764] As an embodiment, at least one of the first data set, the second data set, or the third data set includes the first condition.

[0765] As an embodiment, at least one of the first data set, the second data set, or the third data set includes the measurement result for the first candidate cell.

[0766] As an embodiment, at least one of the first data set, the second data set, or the third data set includes the measurement result for the first serving cell.

[0767] As an embodiment, at least one of the first data set, the second data set, or the third data set includes the first signaling.

[0768] As an embodiment, at least one of the first data set, the second data set, or the third data set includes the third signaling.

[0769] As an embodiment, at least one of the first data set, the second data set, or the third data set includes the first threshold.

[0770] As an embodiment, at least one of the first data set, the second data set, or the third data set includes the second threshold.

[0771] As an embodiment, at least one of the first data set, the second data set, or the third data set includes the third threshold.

[0772] As an embodiment, at least one of the first data set, the second data set, or the third data set includes the fourth threshold.

[0773] As an embodiment, Example 12 is only used to illustrate that the present application can be used in an artificial intelligence processing system. This embodiment does not limit the application of the present application to non-artificial intelligence processing systems. Moreover, this embodiment does not limit the application of the present application to other types of artificial intelligence processing systems to achieve an effect equivalent to that of the artificial intelligence processing system shown in Figure 12.

[0774] Example 13

[0775] Embodiment 13 illustrates a schematic diagram of receiving a random access response on a first candidate cell according to an embodiment of the present application, as shown in FIG13 .

[0776] In embodiment 13, the first process includes monitoring a random access response on the first candidate cell in the random access; and the first RRC message includes time-frequency resources for monitoring the random access response.

[0777] As an embodiment, the time-frequency resource of the random access response refers to the PDCCH configuration used to receive the random access response.

[0778] As an embodiment, the PDCCH configuration includes CORESET information.

[0779] As an embodiment, the PDCCH configuration includes a search space configuration.

[0780] As a sub-embodiment of the above embodiment, the search space is a public search space.

[0781] As a sub-embodiment of the above embodiment, the search space is Type 1-PDCCH.

[0782] As an embodiment, the PDCCH configuration refers to the PDCCH configuration of the first candidate cell.

[0783] As an embodiment, the random access is CFRA.

[0784] As an embodiment, the time-frequency resources of the random access response include frequency domain resource information of the PDCCH monitoring the random access response and information on the number of OFDM symbols occupied in the time domain.

[0785] As an embodiment, the time-frequency resources of the random access response include a PDCCH starting OFDM symbol and a monitoring period, and associated CORESET information.

[0786] As an embodiment, monitoring the random access response on the first candidate cell refers to: monitoring the random access response on the time-frequency resources of the first candidate cell configured by the first RRC message.

[0787] As an embodiment, monitoring the random access response on the first candidate cell includes: monitoring the PDCCH on the first candidate cell according to the configuration in the first RRC message.

[0788] As an embodiment, monitoring the random access response on the first candidate cell includes: using the RA-RNTI corresponding to the first Preamble sent in the first process to descramble the DCI on the monitored PDCCH.

[0789] As an embodiment, monitoring the random access response on the first candidate cell includes: using the RAPID corresponding to the first Preamble sent in the first process to match the sub-PDU in the MAC PDU received by the DCI scheduling.

[0790] Those skilled in the art will appreciate that all or part of the steps in the above method can be completed by instructing relevant hardware through a program, and the program can be stored in a computer-readable storage medium, such as a read-only memory, a hard disk or an optical disk. Optionally, all or part of the steps in the above embodiment can also be implemented using one or more integrated circuits. Accordingly, each module unit in the above embodiment can be implemented in the form of hardware or in the form of a software functional module. This application is not limited to any specific form of combination of software and hardware. The user equipment, terminal and UE in this application include but are not limited to drones, communication modules on drones, remote-controlled aircraft, aircraft, small aircraft, mobile phones, tablet computers, notebooks, vehicle-mounted communication equipment, wireless sensors, internet cards, Internet of Things terminals, RFID terminals, NB-IOT terminals, MTC (Machine Type Communication) terminals, eMTC (enhanced MTC) terminals, data cards, internet cards, vehicle-mounted communication equipment, low-cost mobile phones, low-cost tablet computers and other wireless communication devices. The base stations or system devices in this application include but are not limited to macrocell base stations, microcell base stations, home base stations, relay base stations, gNB (NR node B) NR node B, TRP (Transmitter Receiver Point) and other wireless communication devices.

[0791] The above description is only a preferred embodiment of the present application and is not intended to limit the scope of protection of the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application shall be included in the scope of protection of the present application.

Claims

1. A first node used for wireless communication, characterized in that: include: A first receiver receives a first RRC message, wherein the first RRC message includes a first condition and a target configuration of the first candidate cell, and the first condition is a condition for applying the target configuration of the first candidate cell; A first processor initiates a first process; The first process includes initiating random access on the first candidate cell, and the initiation of the first process depends on at least one of measurement or the first timer is not running; or the first process includes starting UE-based timing advance measurement, and the initiation of the first process depends on at least the former of measurement and the first timer is not running; the first process is for early uplink synchronization of the first candidate cell.

2. The first node according to claim 1, wherein: The initiation of the first process depends on the measurement result of the first candidate cell meeting a first threshold; the first RRC message includes the first threshold.

3. The first node according to claim 2, characterized in that The first condition includes that a measurement result for the first candidate cell meets a second threshold; the first RRC message includes the second threshold; and the first threshold and the second threshold are different.

4. The first node according to any one of claims 1 to 3, characterized in that: The initiation of the first process depends on a measurement result of the first serving cell meeting a third threshold; the first RRC message includes the third threshold.

5. The first node according to claim 4, characterized in that The first condition includes that a measurement result of the first serving cell meets a fourth threshold; the first RRC message includes the fourth threshold; and the third threshold is different from the fourth threshold.

6. The first node according to any one of claims 1 to 5, characterized in that: include: The first receiver receives a first signaling; The first processor, in response to receiving the first signaling, starts the first timer; The first signaling indicates the timing advance of the first candidate cell.

7. The first node according to any one of claims 1 to 6, characterized in that: The first process includes sending second signaling and receiving third signaling; the second signaling triggers the third signaling; and the third signaling triggers initiation of random access on the first candidate cell.

8. The first node according to any one of claims 1 to 7, characterized in that: The first process includes monitoring a random access response on the first candidate cell in the random access; and the first RRC message includes time-frequency resources for monitoring the random access response.

9. A second node used for wireless communication, characterized in that: include: A second transmitter sends a first RRC message, wherein the first RRC message includes a first condition and a target configuration of the first candidate cell, and the first condition is a condition for applying the target configuration of the first candidate cell; The receiver of the first RRC message initiates a first process; the first process includes initiating random access on the first candidate cell, and the initiation of the first process depends on at least one of measurement or the first timer is not running; or, the first process includes starting UE-based timing advance measurement, and the initiation of the first process depends on at least the former of measurement and the first timer is not running; the first process is for early uplink synchronization of the first candidate cell.

10. A method in a first node for wireless communication, characterized in that: include: receiving a first RRC message; wherein the first RRC message includes a first condition and a target configuration of the first candidate cell, the first condition being a condition under which the target configuration of the first candidate cell is applied; initiating a first process; The first process includes initiating random access on the first candidate cell, and the initiation of the first process depends on at least one of measurement or the first timer is not running; or the first process includes starting UE-based timing advance measurement, and the initiation of the first process depends on at least the former of measurement and the first timer is not running; the first process is for early uplink synchronization of the first candidate cell.

11. A method in a second node for wireless communication, characterized in that: include: Sending a first RRC message; wherein the first RRC message includes a first condition and a target configuration of the first candidate cell, the first condition being a condition under which the target configuration of the first candidate cell is applied; The receiver of the first RRC message initiates a first process; the first process includes initiating random access on the first candidate cell, and the initiation of the first process depends on at least one of measurement or the first timer is not running; or, the first process includes starting UE-based timing advance measurement, and the initiation of the first process depends on at least the former of measurement and the first timer is not running; the first process is for early uplink synchronization of the first candidate cell.

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