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

Abstract

This application discloses a method and apparatus for use in a communication node for wireless communication. The communication node receives a first RRC message, the first RRC message including a first condition and first configuration information for a first candidate cell, the first configuration information including the physical layer configuration of the first candidate cell, the first candidate cell being configured to a first serving cell; receives first signaling, the first signaling indicating the first candidate cell, the first signaling indicating a first timing advance command; after the first signaling is received, as a response to the first condition being met, the first configuration information is applied and target signaling is sent; the scheme proposed in this application is beneficial for enhancing early uplink synchronization of conditional LTM, beneficial for TA acquisition of early uplink synchronization of conditional LTM, and beneficial for improving 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 the Chinese patent application filed with the State Intellectual Property Office on January 9, 2024, with application number 202410033707.6 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 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. The serving cell then 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 discovered that existing early uplink synchronization relies on the LTM Cell Switch Command MAC CE, making it difficult to adapt to conditional LTM. For example, in conditional LTM, if the network configures LTM candidate cells and corresponding handover 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. Therefore, it is necessary to enhance early uplink synchronization for conditional LTM.

[0007] In response to the above problems, the present application provides a solution. In the description of the above problems, the NR system is used as an example. The present 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 the present application provides a specific implementation for the 3GPP system, the present application can also be used in scenarios of non-3GPP systems, 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 the original intention of the present application is to target the Uu air interface, the present application can also be used for the PC5 interface, achieving technical effects similar to those of the Uu air interface. Furthermore, although the original intention of the present application is to target conditional LTM, the present application can also be used for CHO or CPC, 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, the first RRC message including a first condition and first configuration information for a first candidate cell, the first configuration information including a physical layer configuration of the first candidate cell, the first candidate cell being configured for a first serving cell; receiving first signaling, the first signaling indicating the first candidate cell, the first signaling indicating a first timing advance command; and after receiving the first signaling, applying the first configuration information and sending target signaling in response to the first condition being satisfied;

[0014] The first signaling is signaling of a protocol layer below the RRC sublayer; when the first signaling is received, any random access process is not in progress; the uplink timing of the target signaling depends on the first timing advance command; and the first condition depends on measurement.

[0015] 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.

[0016] As an embodiment, the problem to be solved by the present application includes: how to obtain early uplink synchronization of conditional LTM.

[0017] 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.

[0018] 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.

[0019] As an embodiment, the characteristics of the above method include: the first signaling indicates the first candidate cell, and the first signaling indicates the first timing advance command.

[0020] As an embodiment, the characteristics of the above method include: in response to the first condition being met, applying the first configuration information and sending target signaling.

[0021] 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.

[0022] As an embodiment, the benefits of the above method include: it is helpful to shorten the switching delay of the conditional LTM.

[0023] As an embodiment, the benefits of the above method include: being conducive to improving the robustness of the switching process.

[0024] According to one aspect of the present application, it is characterized by comprising:

[0025] Before the first signaling is received, sending a first preamble on the first candidate cell; and determining, in response to sending the first preamble on the first candidate cell, that a random access procedure corresponding to the first preamble is successfully completed;

[0026] The first RRC message includes random access configuration information for the first candidate cell, and the random access configuration information includes at least one of the uplink carrier, SSB, and PRACH mask associated with the first Preamble.

[0027] As an embodiment, the benefits of the above method include: facilitating fast switching of UE.

[0028] As an embodiment, the benefits of the above method include: being conducive to reducing signaling overhead.

[0029] According to one aspect of the present application, it is characterized by comprising:

[0030] receiving a first DCI, where the DCI indicates an index of the first preamble;

[0031] The first DCI triggers the first Preamble.

[0032] As an embodiment, the above method has the following benefits: it is helpful for the UE to determine the Preamble resources for early uplink synchronization.

[0033] According to one aspect of the present application, it is characterized in that the first signaling includes a first bit map, the first bit in the first bit map indicates the first candidate cell, and the first bit is set to 1 to indicate that the first signaling includes the first timing advance command.

[0034] As an embodiment, the problem to be solved by the present application includes: how to reasonably design a signaling structure so that it can carry the TAs of multiple conditional LTM candidate cells.

[0035] As an embodiment, the above method has the following benefits: it is facilitating the transmission of TAs acquired during early uplink synchronization of multiple candidate cells.

[0036] As an embodiment, the benefits of the above method include: being conducive to reducing signaling overhead.

[0037] According to one aspect of the present application, it is characterized by comprising:

[0038] In response to receiving the first signaling, starting or restarting a first timer;

[0039] The first timer is for uplink time alignment of the first candidate cell.

[0040] As an embodiment, the benefits of the above method include: being helpful in determining the TA validity for early uplink synchronization.

[0041] As an embodiment, the benefits of the above method include: being beneficial to the conditional handover decision of the UE.

[0042] According to one aspect of the present application, it is characterized in that the first signaling includes first time information, and the value of the first timer depends on the first time information.

[0043] As an embodiment, the benefits of the above method include: being helpful in determining the TA validity for early uplink synchronization.

[0044] As an embodiment, the benefits of the above method include: being facilitating determination of the length of the first timer.

[0045] According to one aspect of the present application, it is characterized by comprising:

[0046] In response to the first signaling being received, the first timing advance command is stored.

[0047] As an embodiment, the benefits of the above method include: facilitating uplink alignment of the first candidate cell.

[0048] The present application discloses a method used in a second node of wireless communication, characterized by comprising:

[0049] sending a first RRC message, the first RRC message including a first condition and first configuration information for a first candidate cell, the first configuration information including a physical layer configuration of the first candidate cell, the first candidate cell being configured for a first serving cell; sending first signaling, the first signaling indicating the first candidate cell, the first signaling indicating a first timing advance command;

[0050] In which, after the first signaling is received, as a response to the first condition being met, the receiver of the first signaling applies the first configuration information and sends the target signaling; the uplink timing of the target signaling depends on the first timing advance command; the first signaling is the signaling of the protocol layer below the RRC sublayer; when the first signaling is received, any random access process is not in progress; the first condition depends on measurement.

[0051] According to one aspect of the present application, it is characterized by comprising:

[0052] Sending a first DCI, where the DCI indicates an index of the first preamble;

[0053] The first DCI triggers the first Preamble.

[0054] According to one aspect of the present application, it is characterized in that the first signaling includes a first bit map, the first bit in the first bit map indicates the first candidate cell, and the first bit is set to 1 to indicate that the first signaling includes the first timing advance command.

[0055] According to one aspect of the present application, it is characterized by comprising:

[0056] The receiver of the first signaling starts or restarts a first timer in response to receipt of the first signaling;

[0057] The first timer is for uplink time alignment of the first candidate cell.

[0058] According to one aspect of the present application, it is characterized in that the first signaling includes first time information, and the value of the first timer depends on the first time information.

[0059] According to one aspect of the present application, it is characterized by comprising:

[0060] The receiver of the first signaling stores the first timing advance command in response to receipt of the first signaling.

[0061] The present application discloses a method used in a third node for wireless communication, characterized by comprising:

[0062] receiving a first preamble on a first candidate cell; sending a second message to a second node in response to receiving the first preamble, wherein the second message triggers first signaling, the first signaling indicating the first candidate cell, and the first signaling indicating a first timing advance command; and receiving target signaling;

[0063] Among them, the first RRC message includes a first condition and first configuration information for the first candidate cell, the first configuration information includes the physical layer configuration of the first candidate cell, and the first candidate cell is configured to the first service cell; the first RRC message includes random access configuration information for the first candidate cell, and the random access configuration information includes at least one of the uplink carrier, SSB, and PRACH mask associated with the first Preamble; the first signaling is the signaling of the protocol layer below the RRC sublayer; when the first signaling is received, any random access process is not in progress; the uplink timing of the target signaling depends on the first timing advance command; after the first signaling is received, as a response to the first condition being met, the receiver of the first signaling applies the first configuration information and sends the target signaling; the receiver of the first signaling is the receiver of the first RRC message; the uplink timing of the target signaling depends on the first timing advance command.

[0064] The present application discloses a first node used for wireless communication, characterized by comprising:

[0065] A first receiver is configured to receive a first RRC message, the first RRC message including a first condition and first configuration information for a first candidate cell, the first configuration information including a physical layer configuration of the first candidate cell, the first candidate cell being configured for a first serving cell; and receive first signaling, the first signaling indicating the first candidate cell, the first signaling indicating a first timing advance command.

[0066] the first processor, after receiving the first signaling, applying the first configuration information and sending target signaling in response to the first condition being satisfied;

[0067] The first signaling is signaling of a protocol layer below the RRC sublayer; when the first signaling is received, any random access process is not in progress; the uplink timing of the target signaling depends on the first timing advance command; and the first condition depends on measurement.

[0068] The present application discloses a second node used for wireless communication, characterized by comprising:

[0069] The second processor sends a first RRC message, where the first RRC message includes a first condition and first configuration information for a first candidate cell, where the first configuration information includes a physical layer configuration of the first candidate cell, and the first candidate cell is configured for a first serving cell; and sends first signaling, where the first signaling indicates the first candidate cell and the first signaling indicates a first timing advance command.

[0070] In which, after the first signaling is received, as a response to the first condition being met, the receiver of the first signaling applies the first configuration information and sends the target signaling; the uplink timing of the target signaling depends on the first timing advance command; the first signaling is the signaling of the protocol layer below the RRC sublayer; when the first signaling is received, any random access process is not in progress; the first condition depends on measurement.

[0071] The present application discloses a three-node system for wireless communication, characterized by comprising:

[0072] A third processor receives a first preamble on a first candidate cell; in response to receiving the first preamble, sends a second message to a second node, wherein the second message triggers first signaling, the first signaling indicating the first candidate cell and indicating a first timing advance command; and receives target signaling.

[0073] Among them, the first RRC message includes a first condition and first configuration information for the first candidate cell, the first configuration information includes the physical layer configuration of the first candidate cell, and the first candidate cell is configured to the first service cell; the first RRC message includes random access configuration information for the first candidate cell, and the random access configuration information includes at least one of the uplink carrier, SSB, and PRACH mask associated with the first Preamble; the first signaling is the signaling of the protocol layer below the RRC sublayer; when the first signaling is received, any random access process is not in progress; the uplink timing of the target signaling depends on the first timing advance command; after the first signaling is received, as a response to the first condition being met, the receiver of the first signaling applies the first configuration information and sends the target signaling; the receiver of the first signaling is the receiver of the first RRC message; the uplink timing of the target signaling depends on the first timing advance command.

[0074] The uplink timing of the target signaling depends on the first timing advance command.

[0075] As an example, compared with traditional solutions, this application has the following advantages:

[0076] -. The signaling process is conducive to the TA acquisition of early uplink synchronization of conditional LTM;

[0077] -. It is helpful to shorten the switching delay of conditional LTM;

[0078] -.It is beneficial to improve the robustness of the switching process;

[0079] -. Facilitates fast switching of UE;

[0080] -. It is beneficial to transmit the TA obtained during the early uplink synchronization process of multiple candidate cells;

[0081] -. It is helpful to determine the effectiveness of TA in early uplink synchronization;

[0082] -. It is beneficial to the uplink alignment of the first candidate cell. BRIEF DESCRIPTION OF THE DRAWINGS

[0083] Other features, objects and advantages of the present application will become more apparent upon reading the detailed description of non-limiting embodiments with reference to the following drawings:

[0084] FIG1 shows a flowchart of early TA acquisition of conditional LTM according to an embodiment of the present application;

[0085] FIG2 shows a schematic diagram of a network architecture according to an embodiment of the present application;

[0086] 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;

[0087] FIG4 shows a schematic diagram of a first communication device and a second communication device according to an embodiment of the present application;

[0088] FIG5 shows a wireless signal transmission flow chart according to an embodiment of the present application;

[0089] FIG6 shows a schematic diagram showing a first bitmap included in first signaling according to an embodiment of the present application;

[0090] FIG7 shows a schematic diagram of starting or restarting a first timer according to an embodiment of the present application;

[0091] FIG8 is a schematic diagram showing the relationship between the first signaling, the first time information, and the first timer according to an embodiment of the present application;

[0092] FIG9 shows a schematic diagram of storing a first timing advance command according to an embodiment of the present application;

[0093] FIG10 shows a structural block diagram of a processing device used in a first node according to an embodiment of the present application;

[0094] FIG11 shows a structural block diagram of a processing device used in a second node according to an embodiment of the present application;

[0095] FIG12 shows a structural block diagram of a processing device used in a third node according to an embodiment of the present application;

[0096] FIG13 shows a schematic diagram of an artificial intelligence processing system according to an embodiment of the present application. DETAILED DESCRIPTION

[0097] 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.

[0098] Example 1

[0099] Example 1 illustrates a flowchart of early TA acquisition for 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 of the steps represented.

[0100] In Example 1, the first node in the present application receives a first RRC message in step 101, where the first RRC message includes a first condition and first configuration information for a first candidate cell, where the first configuration information includes a physical layer configuration of the first candidate cell, and the first candidate cell is configured for a first serving cell; in step 102, a first signaling is received, where the first signaling indicates the first candidate cell, and the first signaling indicates a first timing advance command; in step 103, after the first signaling is received, the first configuration information is applied and a target signaling is sent as a response to the first condition being met; the first signaling is a signaling of a protocol layer below the RRC sublayer; when the first signaling is received, any random access process is not in progress; the uplink timing of the target signaling depends on the first timing advance command; and the first condition depends on measurement.

[0101] As an embodiment, the first RRC message is an RRC reconfiguration message.

[0102] As an embodiment, the first RRC message is an RRCReconfiguration message.

[0103] As an embodiment, the first RRC message includes at least the first condition.

[0104] As an embodiment, the first RRC message includes at least the first configuration information.

[0105] As an embodiment, the first RRC message is for configuring at least the first candidate cell.

[0106] As an embodiment, the first node sends a third message to the second node in response to receiving the first RRC message.

[0107] As an embodiment, the first node sends a third message to the second node in response to storing the first RRC message.

[0108] As an embodiment, the third message is an RRCReconfigurationComplete message.

[0109] As an embodiment, the first RRC message includes a ConditionalReconfiguration IE.

[0110] As an embodiment, the first RRC message includes a CondReconfigToAddModList IE.

[0111] As an embodiment, the CondReconfigToAddModList IE in the first RRC message includes one or more CondReconfigToAddMod fields.

[0112] As an embodiment, the first candidate cell is an LTM candidate cell.

[0113] As an embodiment, the first candidate cell is a Conditional LTM candidate cell.

[0114] As an embodiment, the first candidate cell is a CHO candidate cell.

[0115] As an embodiment, the first candidate cell is a CPC candidate cell.

[0116] As an embodiment, the first candidate cell is a CPA candidate cell.

[0117] As an embodiment, the first candidate cell is a CPAC candidate cell.

[0118] As an embodiment, the first candidate cell is a SCPAC candidate cell.

[0119] As an embodiment, the first candidate cell is configured with only one TAG ID.

[0120] As an embodiment, the first candidate cell is configured with multiple TAG IDs.

[0121] As an embodiment, the first serving cell is the PCell of the first node.

[0122] As an embodiment, the first serving cell is the SPCell of the first node.

[0123] As an embodiment, the first serving cell is the PSCell of the first node.

[0124] As an embodiment, the first condition and the first configuration information are two fields in the same CondReconfigToAddMod field in the CondReconfigToAddModList IE.

[0125] As an embodiment, the first condition is configured by a condExecutionCond field.

[0126] As an embodiment, the first condition is configured by a condExecutionCondPSCell field.

[0127] As an embodiment, the first condition is configured by a condExecutionCondSCG field.

[0128] As an embodiment, the first configuration information is a ConditionalReconfiguration IE.

[0129] As an embodiment, the first configuration information includes a ConditionalReconfiguration IE.

[0130] As an embodiment, the first configuration information is a condRRCReconfig field.

[0131] As an embodiment, the first configuration information includes a condRRCReconfig field.

[0132] As an embodiment, the first configuration information is an LTM-Candidate IE.

[0133] As an embodiment, the first configuration information includes an LTM-Candidate IE.

[0134] As an embodiment, the first configuration information is a ltm-CandidateConfig field.

[0135] As an embodiment, the first configuration information includes a ltm-CandidateConfig field.

[0136] As an embodiment, the first configuration information is a SubsequentCondReconfig field.

[0137] As an embodiment, the first configuration information is information in the CondExecutionCondToReleaseList field and the CondExecutionCondToAddModList field.

[0138] As an embodiment, the first RRC message includes configuration for early uplink synchronization on the first candidate cell.

[0139] As an embodiment, the first configuration information includes configuration for early uplink synchronization on the first candidate cell.

[0140] As an embodiment, the configuration for performing early uplink synchronization on the first candidate cell is an EarlyUL-SyncConfig IE.

[0141] As an embodiment, the first condition is a condition set.

[0142] As a sub-embodiment of the above embodiment, the condition set includes one or more sub-conditions.

[0143] As a sub-embodiment of the above embodiment, when all sub-conditions in the condition set are satisfied at the same time, the first condition is satisfied.

[0144] As a sub-embodiment of the above embodiment, when any sub-condition in the condition set is met, the first condition is met.

[0145] As an embodiment, the first condition depends on a measurement.

[0146] As a sub-embodiment of the above embodiment, the measurement is L1 measurement.

[0147] As a sub-embodiment of the above embodiment, the measurement is L3 measurement.

[0148] As a sub-embodiment of the above embodiment, the measurements are L1 and L3 measurements.

[0149] As a sub-embodiment of the above embodiment, the measurement is L1 or L3 measurement.

[0150] As a sub-embodiment of the above embodiment, the measurement includes RSRP measurement.

[0151] As a sub-embodiment of the above embodiment, the measurement includes RSRQ measurement.

[0152] As a sub-embodiment of the above embodiment, the measurement includes CQI measurement.

[0153] As a sub-embodiment of the above embodiment, the measurement includes SINR measurement.

[0154] As a sub-embodiment of the above embodiment, the measurement includes reference signal path loss RSRP measurement.

[0155] As a sub-embodiment of the above embodiment, the measurement includes measurement of SSB.

[0156] As a sub-embodiment of the above embodiment, the measurement includes measurement of CSI-RS.

[0157] As a sub-embodiment of the above embodiment, the measurement includes measurement of SSB.

[0158] As a sub-embodiment of the above embodiment, the measurement includes measurement of PRS.

[0159] As a sub-embodiment of the above embodiment, the measurement is an inter-frequency measurement.

[0160] As a sub-embodiment of the above embodiment, the measurement is an intra-frequency measurement.

[0161] As a sub-embodiment of the above embodiment, the measurement includes time measurement.

[0162] As an embodiment, the first condition includes that a measurement result of the measurement of the first candidate cell is higher than a threshold.

[0163] As an embodiment, the first condition includes that a measurement result of the measurement of the first candidate cell is higher than a measurement result of the first serving cell.

[0164] As an embodiment, the first condition includes that within a given time interval, the measurement result of the measurement on the first candidate cell is higher than the measurement result of the first serving cell.

[0165] As an embodiment, the first condition includes that the measurement result of the measurement on the first candidate cell is higher than a threshold, and the measurement result of the measurement on the first serving cell is lower than a threshold.

[0166] As an embodiment, the first condition includes that the measurement result of the measurement for the first candidate cell is higher than a threshold within a given time interval, and the measurement result of the measurement for the first serving cell is lower than a threshold within the given time interval.

[0167] As an embodiment, the first condition includes that the location of the first node enters a first area, and the first area is for mobility management of the first candidate cell.

[0168] As an embodiment, the first area is preconfigured.

[0169] As an embodiment, the first area is configured by the first RRC message.

[0170] As an embodiment, the first condition includes that the distance between the first node and the first reference point is greater than a threshold, and the distance between the first node and the second reference point is less than a threshold; the first reference point and the second reference point are for mobility management of the first service cell and the first candidate cell respectively.

[0171] As an embodiment, the first reference point and the second reference point are preconfigured.

[0172] As an embodiment, the first reference point and the second reference point are configured by the first RRC message.

[0173] As an embodiment, the first condition depends on measurement and the first condition depends on a decision of an AI module.

[0174] As an embodiment, the first condition depends on a decision of an AI module; and the decision of the AI ​​module depends on measurement.

[0175] As an embodiment, the first signaling is a DCI.

[0176] As an embodiment, the first signaling is a MAC CE.

[0177] As an embodiment, the first signaling is Early Sync Timing Advance Command MAC CE.

[0178] As an embodiment, the first signaling is Candidate Cell Timing Advance Command MAC CE.

[0179] As an embodiment, the first signaling is Candidate Cell Early Sync Timing Advance Command MAC CE.

[0180] As an embodiment, the name of the first signaling includes at least Candidate Cell.

[0181] As an embodiment, the name of the first signaling includes at least Early Sync.

[0182] As an embodiment, the first signaling is not LTM Cell Switch Command MAC CE.

[0183] As an embodiment, the first signaling indicates one or more candidate cells.

[0184] As an embodiment, the first signaling indicates one or more timing advance commands.

[0185] As an embodiment, the first candidate cell is one of the one or more candidate cells.

[0186] As an embodiment, the first timing advance command is one of the one or more timing advance commands.

[0187] As an embodiment, the first signaling explicitly indicates the first candidate cell.

[0188] As an embodiment, the first signaling implicitly indicates the first candidate cell.

[0189] As an embodiment, the first signaling indicates only the first candidate cell.

[0190] As an embodiment, the first signaling indicates multiple candidate cells, and the first candidate cell is one of the multiple candidate cells.

[0191] As an embodiment, the first signaling indicates the first timing advance command of only the first candidate cell.

[0192] As an embodiment, the first signaling indicates multiple timing advance commands of only the first candidate cell.

[0193] As an embodiment, the first signaling indicates multiple candidate cells, and the first signaling indicates at least one timing advance command of each of the multiple candidate cells; the first candidate cell is one of the multiple candidate cells, and the first timing advance command is one of the at least one timing advance command of the first candidate cell.

[0194] As an embodiment, the at least one timing advance command is only one timing advance command.

[0195] As an embodiment, the at least one timing advance command is a plurality of timing advance commands.

[0196] As an embodiment, the at least one timing advance command is one or more timing advance commands.

[0197] As an embodiment, the multiple timing advance commands are 2 timing advance commands.

[0198] As an embodiment, the multiple timing advance commands are greater than 2 timing advance commands.

[0199] As an embodiment, the timing advance command indicates a timing advance.

[0200] As an embodiment, the timing advance command is used to calculate the timing advance.

[0201] As an embodiment, the timing advance command is a timing advance field.

[0202] As an embodiment, the first signaling indicates a TAG ID corresponding to the first timing advance command; the first signaling indicates multiple timing advance commands of the first candidate cell.

[0203] As an embodiment, the first timing advance command is for the first candidate cell.

[0204] As an embodiment, the number of bits occupied by the domain indicating the first candidate cell in the first signaling is fixed.

[0205] As an embodiment, the number of bits occupied by the domain indicating the first candidate cell in the first signaling is variable.

[0206] As an embodiment, the number of bits occupied by the field indicating the first candidate cell in the first signaling depends on the number of candidate cells indicated by the first signaling.

[0207] As an embodiment, the number of bits occupied by the domain indicating the first candidate cell in the first signaling depends on the number of candidate cells configured for the first serving cell.

[0208] As an embodiment, the number of bits occupied by the field indicating the first candidate cell in the first signaling is equal to floor(log2(the number of candidate cells indicated by the first signaling)).

[0209] As an embodiment, the number of bits occupied by the field indicating the first candidate cell in the first signaling is equal to floor(log2(the number of candidate cells configured for the first serving cell)).

[0210] As an embodiment, the number of bits occupied by the field indicating the first candidate cell in the first signaling is equal to floor(log2(the number of candidate cells indicated by the first signaling+1)).

[0211] As an embodiment, the number of bits occupied by the field indicating the first candidate cell in the first signaling is equal to floor(log2(the number of candidate cells configured for the first serving cell+1)).

[0212] As an embodiment, the number of bits occupied by the domain indicating the first candidate cell in the first signaling is 3 bits.

[0213] As an embodiment, the number of bits occupied by the domain indicating the first candidate cell in the first signaling is 4 bits.

[0214] As an embodiment, the number of bits occupied by the domain indicating the first candidate cell in the first signaling is 5 bits.

[0215] As an embodiment, the number of bits occupied by the domain indicating the first candidate cell in the first signaling is 6 bits.

[0216] As an embodiment, the number of bits occupied by the domain indicating the first candidate cell in the first signaling is 7 bits.

[0217] As an embodiment, the number of bits occupied by the domain indicating the first candidate cell in the first signaling is 8 bits.

[0218] As an embodiment, the number of bits occupied by the field used to indicate the first timing advance command in the first signaling is 6 bits.

[0219] As an embodiment, the number of bits occupied by the field used to indicate the first timing advance command in the first signaling is 8 bits.

[0220] As an embodiment, the number of bits occupied by the field used to indicate the first timing advance command in the first signaling is 12 bits.

[0221] As an embodiment, the first timing advance command is used to indicate the TA of the first candidate cell.

[0222] As an embodiment, the first timing advance command is used to indicate the relative value of the TA of the first candidate cell.

[0223] As a sub-embodiment of the above embodiment, the first signaling indicates a first TAG ID, and the first timing advance command indicates a difference between the TA of the first candidate cell and a current TA value of the first TAG.

[0224] As a sub-embodiment of the above embodiment, the first signaling indicates a first TAG ID, and the first timing advance command indicates a difference between a current TA value of the first TAG and a TA of the first candidate cell.

[0225] As a sub-embodiment of the above embodiment, when the first signaling is received, if the TAG corresponding to the first TAG ID does not have a valid TA, the TA of the first candidate cell indicated by the first timing advance command is invalid.

[0226] As a sub-embodiment of the above embodiment, when the first signaling is received, if the timeAlignmentTimer of the TAG corresponding to the first TAG ID has expired, the TA of the first candidate cell indicated by the first timing advance command is invalid.

[0227] As a sub-embodiment of the above embodiment, the first timing advance command indicates a difference between a current TA value of the first candidate cell and a PTAG of the first node.

[0228] As a sub-embodiment of the above embodiment, the first timing advance command indicates a difference between the PTAG of the first node and a current TA value of the first candidate cell.

[0229] As a sub-embodiment of the above embodiment, when receiving the first signaling, if the PTAG of the first node does not have a valid TA, the TA of the first candidate cell indicated by the first timing advance command is invalid.

[0230] As a sub-embodiment of the above embodiment, when the first signaling is received, if the timeAlignmentTimer of the PTAG of the first node has expired, the TA of the first candidate cell indicated by the first timing advance command is invalid.

[0231] As an embodiment, the first timing advance command is used to indicate the absolute value of the TA of the first candidate cell.

[0232] As an embodiment, the first timing advance command indicates the TA of the serving cell PTAG of the first node.

[0233] As an embodiment, the first timing advance command indicates an adjustment value of the TA of the serving cell PTAG of the first node.

[0234] As an embodiment, the first timing advance command indicates the absolute value of the TA of the serving cell PTAG of the first node.

[0235] As an embodiment, when the value of the field used to indicate the first timing advance command in the first signaling is FFF, it indicates that there is no valid TA on the first candidate cell.

[0236] As an embodiment, when all bits in the field used to indicate the first timing advance command in the first signaling are 1, it indicates that there is no valid TA on the first candidate cell.

[0237] As an embodiment, when there is no timing advance command of the first candidate cell in the first signaling, it means that there is no valid TA on the first candidate cell.

[0238] As an embodiment, the number of bits occupied by the first signaling is fixed.

[0239] As an embodiment, the number of bits occupied by the first signaling is variable.

[0240] As an embodiment, the number of bits occupied by the first signaling depends on the number of candidate cells indicated by the first signaling.

[0241] As an embodiment, the number of bits occupied by the first signaling depends on the number of candidate cells configured for the first serving cell.

[0242] As an embodiment, the first signaling includes at least two octets.

[0243] As an embodiment, the first signaling consists of two octets.

[0244] As an embodiment, the first signaling consists of multiple octets.

[0245] As an embodiment, the field indicating the first candidate cell and the field indicating the first timing advance command in the first signaling occupy two consecutive eight-bit groups.

[0246] As an embodiment, the field indicating the first candidate cell and the field indicating the first timing advance command in the first signaling belong to different octets.

[0247] As an embodiment, the first signaling includes multiple timing advance commands.

[0248] As an embodiment, the number of timing advance commands included in the first signaling depends on the number of candidate cells configured for the first serving cell.

[0249] As an embodiment, the number of timing advance commands included in the first signaling depends on the number of candidate cells configured for the first serving cell and supporting uplink synchronization.

[0250] As an embodiment, the number of timing advance commands included in the first signaling depends on the number of candidate cells configured for the first serving cell, which support early uplink synchronization and are configured with execution conditions.

[0251] As an embodiment, the order of multiple timing advance commands in the first signaling depends on the order of candidate cells in the first RRC message configuration.

[0252] As an embodiment, the order of multiple timing advance commands in the first signaling depends on the order of candidate cells in the first UE variable.

[0253] As an embodiment, the order of the multiple timing advance commands in the first signaling depends on the order of the candidate cells supporting early uplink synchronization configured in the first RRC message.

[0254] As an embodiment, the order of the multiple timing advance commands in the first signaling depends on the order of the candidate cells supporting early uplink synchronization in the first UE variable.

[0255] As an embodiment, the order of the multiple timing advance commands in the first signaling depends on the order of the candidate cells that support early uplink synchronization and are configured with execution conditions in the configuration in the first RRC message.

[0256] As an embodiment, the order of the multiple timing advance commands in the first signaling depends on the order of the candidate cells that support early uplink synchronization and are configured with execution conditions in the first UE variable.

[0257] As an embodiment, among the multiple timing advance commands in the first signaling, when the bits corresponding to a timing advance command are all 1, it means that the candidate cell corresponding to the timing advance command has no valid TA.

[0258] As an embodiment, among the multiple timing advance commands in the first signaling, when the value of a certain timing advance command is FFF, it means that the candidate cell corresponding to the timing advance command has no valid TA.

[0259] As an embodiment, among the multiple timing advance commands in the first signaling, when the bits corresponding to a timing advance command are not all 1, the value of the timing advance command represents the valid TA of the corresponding candidate cell.

[0260] As an embodiment, among the multiple timing advance commands in the first signaling, when the value of a certain timing advance command is not FFF, the value of the timing advance command represents the valid TA of the candidate cell corresponding to it.

[0261] As an embodiment, in response to the first signaling being received, timeAlignmentTimer for uplink time alignment of the first candidate cell is not started or is restarted.

[0262] As an embodiment, applying the first configuration information refers to: applying the first configuration information stored in the UE variable of the first node.

[0263] As an embodiment, the sentence "as a response to the first condition being met, applying the first configuration information and sending the target signaling" means: when the first condition is met, applying the first configuration information and sending the target signaling.

[0264] As an embodiment, the sentence "in response to the first condition being met, applying the first configuration information and sending the target signaling" means: once the first condition is met, applying the first configuration information and sending the target signaling.

[0265] As an embodiment, the sentence "as a response to the first condition being met, applying the first configuration information and sending the target signaling" means: the first condition is met, triggering the application of the first configuration information and sending the target signaling.

[0266] As an embodiment, any random access process is on the first candidate cell.

[0267] As an embodiment, any random access process is performed on the MAC entity to which the first serving cell belongs.

[0268] As an embodiment, the target signaling is a PUCCH transmission.

[0269] As an embodiment, the target signaling is a PUSCH transmission.

[0270] As an embodiment, the target signaling refers to an RRCReconfigurationComplete message.

[0271] As an embodiment, the target signaling refers to the first uplink data transmission on the first candidate cell.

[0272] As an embodiment, the uplink timing of the target signaling being dependent on the first timing advance command means that the first node uses the TA indicated by the first timing advance command as the uplink TA for sending the target signaling.

[0273] As an embodiment, the uplink timing of the target signaling depends on the first timing advance command, which means that the first node determines the uplink timing of sending the target signaling according to the TA indicated by the first timing advance command.

[0274] As an embodiment, if there is no valid TA for the first candidate cell when sending the target signaling, fall back to RACH-based LTM.

[0275] As an embodiment, if the first condition is met and there is no valid TA for the first candidate cell, the method falls back to RACH-based LTM.

[0276] As an embodiment, if there is no valid TA for the first candidate cell when sending the target signaling, fall back to RACH-based LTM.

[0277] As an embodiment, if the first condition is met and there is no valid TA for the first candidate cell, the method falls back to RACH-based LTM.

[0278] As an embodiment, the action of falling back to RACH-based LTM means: when contention-free random access (CFRA) resources are configured on the first candidate cell, falling back to CFRA-based LTM; otherwise falling back to contention-based random access (CBRA)-based LTM.

[0279] As an embodiment, the first RRC message configures the CFRA resources on the first candidate cell.

[0280] As an embodiment, the first signaling configures the CFRA resources on the first candidate cell.

[0281] As an embodiment, the first signaling includes at least one of a CFRA resource on the first candidate cell and a timing advance command for the first candidate cell.

[0282] As an embodiment, the CFRA and CBRA are 4-step.

[0283] As an embodiment, the CFRA and CBRA may be 2-step.

[0284] As an example, the CFRA and CBRA may not be 2-step.

[0285] As an embodiment, the LTM is a conditional LTM.

[0286] As an embodiment, the LTM is a continuous LTM.

[0287] As an embodiment, the LTM is a continuous conditional LTM.

[0288] As an embodiment, the LTM is Conditional L1 / L2 Triggered Mobility.

[0289] As an embodiment, the LTM is a Cond-LTM.

[0290] As an embodiment, the LTM is a CondLTM.

[0291] As an embodiment, the LTM is a C-LTM.

[0292] As an embodiment, the LTM is a CLTM.

[0293] As an embodiment, the LTM is Subsequent L1 / L2 Triggered Mobility.

[0294] As an embodiment, the LTM is a Subsequent-LTM.

[0295] As an embodiment, the LTM is an S-LTM.

[0296] As an embodiment, the LTM is a SLTM.

[0297] As an embodiment, the LTM is Subsequent Conditional L1 / L2 Triggered Mobility.

[0298] As an embodiment, the LTM is a Subsequent-Cond-LTM.

[0299] As an embodiment, the LTM is a Subsequent-C-LTM.

[0300] As an embodiment, the LTM is a SC-LTM.

[0301] As an embodiment, the LTM is a SCLTM.

[0302] Example 2

[0303] 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.

[0304] As an embodiment, the UE201 corresponds to the first node in this application.

[0305] As an embodiment, the UE 201 is a user equipment (UE).

[0306] As an embodiment, the UE 201 is a base station (BS).

[0307] As an embodiment, the UE 201 is a relay device.

[0308] As an embodiment, the UE 201 is a gateway device.

[0309] As an embodiment, the node 203 corresponds to the second node in this application.

[0310] As an embodiment, the node 203 is a base station device.

[0311] As an embodiment, the node 203 is a user equipment.

[0312] As an embodiment, the node 203 is a relay device.

[0313] As an embodiment, the node 203 is a gateway device.

[0314] Typically, the UE 201 is a user equipment, and the node 203 is a base station device.

[0315] Typically, the UE 201 is a user equipment, and the node 203 is a user equipment.

[0316] Typically, the UE 201 is a base station device, and the node 203 is a base station device.

[0317] As an embodiment, the user equipment supports transmission of a non-terrestrial network (NTN).

[0318] As an embodiment, the user equipment supports transmission via a terrestrial network (Terrestrial Network).

[0319] As an embodiment, the user equipment supports dual connection (DC) transmission.

[0320] As an embodiment, the user equipment includes an aircraft.

[0321] As an embodiment, the user equipment includes a vehicle-mounted terminal.

[0322] As an embodiment, the user equipment includes a vessel.

[0323] As an embodiment, the user equipment includes an Internet of Things terminal.

[0324] As an embodiment, the user equipment includes a terminal of the Industrial Internet of Things.

[0325] As an embodiment, the user equipment includes a device that supports low-latency and high-reliability transmission.

[0326] As an embodiment, the user equipment includes a test device.

[0327] As an embodiment, the user equipment includes a signaling tester.

[0328] As an embodiment, the user equipment includes an IAB (Integrated Access and Backhaul)-MT (Mobile Termination).

[0329] As an embodiment, the base station device supports transmission in a non-terrestrial network.

[0330] As an embodiment, the base station device supports transmission of a terrestrial network.

[0331] As an embodiment, the base station equipment includes a base transceiver station (Base Transceiver Station, BTS).

[0332] As an embodiment, the base station device includes a Node B (NB).

[0333] As an embodiment, the base station device includes a gNB.

[0334] As an embodiment, the base station device includes an eNB.

[0335] As an embodiment, the base station device includes ng-eNB.

[0336] As an embodiment, the base station device includes an en-gNB.

[0337] As an embodiment, the base station device includes a CU (Centralized Unit).

[0338] As an embodiment, the base station device includes a DU (Distributed Unit).

[0339] As an embodiment, the base station device includes a TRP (Transmitter Receiver Point).

[0340] As an embodiment, the base station device includes a macro cellular (Marco Cellular) base station.

[0341] As an embodiment, the base station device includes a micro cell base station.

[0342] As an embodiment, the base station device includes a pico cell (Pico Cell) base station.

[0343] As an embodiment, the base station device includes a home base station (Femtocell).

[0344] As an embodiment, the base station device includes a flying platform device.

[0345] As an embodiment, the base station device includes a satellite device.

[0346] As an embodiment, the base station device includes a testing device.

[0347] As an embodiment, the base station equipment includes a signaling tester.

[0348] As an embodiment, the base station device includes a gateway device.

[0349] As an embodiment, the base station device includes an IAB-node.

[0350] As an embodiment, the base station device includes an IAB-donor.

[0351] As an embodiment, the base station device includes an IAB-donor-CU.

[0352] As an embodiment, the base station device includes an IAB-donor-DU.

[0353] As an embodiment, the base station device includes an IAB-DU.

[0354] As an embodiment, the base station device includes an IAB-MT.

[0355] As an embodiment, the relay device includes a relay.

[0356] As an embodiment, the relay device includes an L3 relay.

[0357] As an embodiment, the relay device includes an L2 relay.

[0358] As an embodiment, the relay device includes a router.

[0359] As an embodiment, the relay device includes a switch.

[0360] As an embodiment, the relay device includes a gateway device.

[0361] As an embodiment, the relay device includes user equipment.

[0362] As an embodiment, the relay device includes a base station device.

[0363] Example 3

[0364] 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.

[0365] As an embodiment, the wireless protocol architecture in FIG3 is applicable to the first node in this application.

[0366] As an embodiment, the wireless protocol architecture in FIG3 is applicable to the second node in this application.

[0367] As an embodiment, the wireless protocol architecture in FIG3 is applicable to the third node in this application.

[0368] As an embodiment, the first RRC message in this application is generated in the RRC306.

[0369] As an embodiment, the first DCI in the present application is generated by the MAC302 or MAC352.

[0370] As an embodiment, the first DCI in this application is generated by the PHY301 or PHY351.

[0371] As an embodiment, the first signaling in the present application is generated by the MAC302 or MAC352.

[0372] As an embodiment, the first signaling in this application is generated in the PHY301 or PHY351.

[0373] As an embodiment, the first Preamble in the present application is generated by the MAC302 or MAC352.

[0374] As an embodiment, the first Preamble in this application is generated by the PHY301 or PHY351.

[0375] As an embodiment, the second message in this application is generated in the RRC306.

[0376] As an embodiment, the second message in the present application is generated by the MAC302 or MAC352.

[0377] As an embodiment, the second message in the present application is generated by the PHY301 or PHY351.

[0378] As an embodiment, the target signaling in this application is generated in the RRC306.

[0379] As an embodiment, the target signaling in the present application is generated by the MAC302 or MAC352.

[0380] As an embodiment, the target signaling in this application is generated in the PHY301 or PHY351.

[0381] Example 4

[0382] 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.

[0383] 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 .

[0384] 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 .

[0385] 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.

[0386] 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.

[0387] 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.

[0388] 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.

[0389] 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 first configuration information for a first candidate cell, the first configuration information includes a physical layer configuration of the first candidate cell, and the first candidate cell is configured to a first serving cell; receives a first signaling, the first signaling indicates the first candidate cell, and the first signaling indicates a first timing advance command; after the first signaling is received, as a response to the first condition being met, applies the first configuration information and sends a target signaling; the first signaling is a signaling of a protocol layer below the RRC sublayer; when the first signaling is received, any random access process is not in progress; the uplink timing of the target signaling depends on the first timing advance command; the first condition depends on measurement.

[0390] As an embodiment, the first communication device 450 includes: a memory storing a computer-readable instruction program, the computer-readable instruction program generates 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 first configuration information for a first candidate cell, the first configuration information including a physical layer configuration of the first candidate cell, the first candidate cell being configured to a first serving cell; receiving a first signaling, the first signaling indicating the first candidate cell, the first signaling indicating a first timing advance command; after the first signaling is received, as a response to the first condition being met, applying the first configuration information and sending a target signaling; the first signaling is a signaling of a protocol layer below the RRC sublayer; when the first signaling is received, any random access process is not in progress; the uplink timing of the target signaling depends on the first timing advance command; the first condition depends on measurement.

[0391] 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 with the at least one processor. The second communication device 410 at least: sends a first RRC message, the first RRC message including a first condition and first configuration information for a first candidate cell, the first configuration information including a physical layer configuration of the first candidate cell, the first candidate cell being configured for a first serving cell; sends a first signaling, the first signaling indicating the first candidate cell, the first signaling indicating a first timing advance command; after the first signaling is received, as a response to the first condition being met, the receiver of the first signaling applies the first configuration information and sends a target signaling; the uplink timing of the target signaling depends on the first timing advance command; the first signaling is signaling of a protocol layer below the RRC sublayer; when the first signaling is received, no random access procedure is in progress; the first condition depends on measurement.

[0392] As an embodiment, the second communication device 410 includes: a memory storing a computer-readable instruction program, the computer-readable instruction program generates actions when executed by at least one processor, the actions including: sending a first RRC message, the first RRC message including a first condition and first configuration information for a first candidate cell, the first configuration information including a physical layer configuration of the first candidate cell, the first candidate cell being configured to a first serving cell; sending a first signaling, the first signaling indicating the first candidate cell, the first signaling indicating a first timing advance command; after the first signaling is received, as a response to the first condition being met, the receiver of the first signaling applies the first configuration information and sends a target signaling; the uplink timing of the target signaling depends on the first timing advance command; the first signaling is a signaling of the protocol layer below the RRC sublayer; when the first signaling is received, any random access process is not in progress; the first condition depends on measurement.

[0393] 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: receiving a first preamble on a first candidate cell; sending a second message to a second node as a response to receiving the first preamble, the second message triggering a first signaling, the first signaling indicating the first candidate cell, the first signaling indicating a first timing advance command; receiving target signaling; a first RRC message including a first condition and first configuration information for the first candidate cell, the first configuration information including a physical layer configuration of the first candidate cell, the first candidate cell being configured to a first serving cell; the The first RRC message includes random access configuration information for the first candidate cell, and the random access configuration information includes at least one of the uplink carrier, SSB, and PRACH mask associated with the first Preamble; the first signaling is signaling of the protocol layer below the RRC sublayer; when the first signaling is received, any random access process is not in progress; the uplink timing of the target signaling depends on the first timing advance command; after the first signaling is received, as a response to the first condition being met, the receiver of the first signaling applies the first configuration information and sends the target signaling; the receiver of the first signaling is the receiver of the first RRC message; the uplink timing of the target signaling depends on the first timing advance command.

[0394] 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: receiving a first preamble on a first candidate cell; sending a second message to a second node as a response to receiving the first preamble, the second message triggering a first signaling, the first signaling indicating the first candidate cell, the first signaling indicating a first timing advance command; receiving target signaling; a first RRC message including a first condition and first configuration information for the first candidate cell, the first configuration information including a physical layer configuration of the first candidate cell, the first candidate cell being configured to a first serving cell; the The first RRC message includes random access configuration information for the first candidate cell, and the random access configuration information includes at least one of the uplink carrier, SSB, and PRACH mask associated with the first Preamble; the first signaling is signaling of the protocol layer below the RRC sublayer; when the first signaling is received, any random access process is not in progress; the uplink timing of the target signaling depends on the first timing advance command; after the first signaling is received, as a response to the first condition being met, the receiver of the first signaling applies the first configuration information and sends the target signaling; the receiver of the first signaling is the receiver of the first RRC message; the uplink timing of the target signaling depends on the first timing advance command.

[0395] 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.

[0396] 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.

[0397] As an embodiment, at least one of the antenna 452, the receiver 454, the receive processor 456, and the controller / processor 459 is used to receive the first DCI.

[0398] 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 DCI.

[0399] 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.

[0400] 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.

[0401] 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.

[0402] 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.

[0403] 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 target signaling.

[0404] As an embodiment, at least one of the antenna 420, the receiver 418, the reception processor 470, and the controller / processor 475 is used to receive the target signaling.

[0405] As an embodiment, the first communication device 450 corresponds to the first node in this application.

[0406] As an embodiment, the second communication device 410 corresponds to the second node in this application.

[0407] As an embodiment, the second communication device 410 corresponds to the third node in this application.

[0408] As an embodiment, the first communication device 450 is a user equipment.

[0409] As an embodiment, the first communication device 450 is a base station device.

[0410] As an embodiment, the first communication device 450 is a relay device.

[0411] As an embodiment, the second communication device 410 is a user equipment.

[0412] As an embodiment, the second communication device 410 is a base station device.

[0413] As an embodiment, the second communication device 410 is a relay device.

[0414] As an embodiment, the third communication device 410 is a user equipment.

[0415] As an embodiment, the third communication device 410 is a base station device.

[0416] As an embodiment, the third communication device 410 is a relay device.

[0417] Example 5

[0418] 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.

[0419] For the first node U01:

[0420] In step S5101, a first RRC message is received;

[0421] In step S5102, a first DCI is received;

[0422] In step S5103, before the first signaling is received, a first preamble is sent on the first candidate cell, and as a response to sending the first preamble on the first candidate cell, it is determined that a random access procedure corresponding to the first preamble is successfully completed;

[0423] In step S5104, first signaling is received;

[0424] In step S5105, after the first signaling is received, in response to the first condition being met, the first configuration information is applied and target signaling is sent;

[0425] For the second node N02:

[0426] In step S5201, a first RRC message is sent;

[0427] In step S5202, a first DCI is sent;

[0428] In step S5203, a second message is received;

[0429] In step S5204, a first signaling is sent;

[0430] For the third node N03:

[0431] In step S5301, a first Preamble is received;

[0432] In step S5302, a second message is sent;

[0433] In step S5303, receiving target signaling;

[0434] In embodiment 5, the first RRC message includes a first condition and first configuration information for a first candidate cell, the first configuration information includes the physical layer configuration of the first candidate cell, and the first candidate cell is configured to a first serving cell; the first signaling indicates the first candidate cell, and the first signaling indicates a first timing advance command; the first signaling is signaling of a protocol layer below the RRC sublayer; when the first signaling is received, no random access process is in progress; the uplink timing of the target signaling depends on the first timing advance command; the first condition depends on measurement; the first RRC message includes random access configuration information for the first candidate cell, and the random access configuration information includes at least one of the uplink carrier, SSB, and PRACH mask associated with the first Preamble; the DCI indicates the index of the first Preamble; and the first DCI triggers the first Preamble.

[0435] As an embodiment, the first node U01 and the second node N02 are connected wirelessly.

[0436] As an embodiment, the first node U01 and the second node N02 are connected via a wired connection.

[0437] As an embodiment, the first node U01 and the second node N02 are connected via a Uu port.

[0438] As an embodiment, the first node U01 and the second node N02 are connected via an IAB port.

[0439] As an embodiment, the first node U01 and the second node N02 are connected via a PC5 interface.

[0440] As an embodiment, the first node U01 and the third node N03 are connected wirelessly.

[0441] As an embodiment, the first node U01 and the third node N03 are connected via a wired connection.

[0442] As an embodiment, the first node U01 and the third node N03 are connected via a Uu port.

[0443] As an embodiment, the first node U01 and the third node N03 are connected via an IAB port.

[0444] As an embodiment, the first node U01 and the third node N03 are connected via a PC5 interface.

[0445] As an embodiment, the second node U02 and the third node N03 are connected wirelessly.

[0446] As an embodiment, the second node U02 and the third node N03 are connected via a wired connection.

[0447] As an embodiment, the second node U02 and the third node N03 are connected via a Uu port.

[0448] As an embodiment, the second node U02 and the third node N03 are connected via an IAB port.

[0449] As an embodiment, the second node U02 and the third node N03 are connected via a PC5 interface.

[0450] As an embodiment, the second node U02 and the third node N03 are connected via an Xn interface.

[0451] As an embodiment, the second node U02 and the third node N03 are connected via an X2 interface.

[0452] As an embodiment, the second node U02 is the third node N03.

[0453] As an embodiment, the second node U02 is not the third node N03.

[0454] As an embodiment, the dotted box F5.1 is optional.

[0455] As an embodiment, the dotted box F5.1 exists.

[0456] As an embodiment, the dotted box F5.1 does not exist.

[0457] As an embodiment, the dotted box F5.2 is optional.

[0458] As an embodiment, the dotted box F5.2 exists.

[0459] As an embodiment, the dotted box F5.2 does not exist.

[0460] As an embodiment, the dotted box F5.3 is optional.

[0461] As an embodiment, the dotted box F5.3 exists.

[0462] As an embodiment, the dotted box F5.3 does not exist.

[0463] As an embodiment, when the dotted box F5.1 exists, the dotted box F5.2 exists.

[0464] As an embodiment, the dotted box F5.1 is before the dotted box F5.2.

[0465] As an embodiment, the action of receiving the first Preamble refers to: receiving the first Preamble.

[0466] As an embodiment, the action of receiving the first Preamble refers to: detecting the first Preamble.

[0467] As an embodiment, the action of receiving the first Preamble refers to: monitoring the first Preamble.

[0468] As an embodiment, the action of receiving the first Preamble refers to: decoding the first Preamble.

[0469] As an embodiment, the action of receiving the first Preamble refers to: identifying the first Preamble.

[0470] As an embodiment, the second message is transmitted via a ground interface.

[0471] As an embodiment, the second message is an XnAP message.

[0472] As an embodiment, the second message is an NGAP message.

[0473] As an embodiment, the second message is an RRC message.

[0474] As an embodiment, in response to the second message being received, the second node N02 sends the first signaling.

[0475] As an embodiment, the second message indicates the first timing advance command.

[0476] As an embodiment, the second node N02 determines the first timing advance command.

[0477] As an embodiment, the second node N02 determines the first timing advance command based on an uplink signal.

[0478] As an embodiment, the second node N02 determines the first timing advance command based on the first Preamble.

[0479] As an embodiment, the second node N02 determines the first timing advance command based on implementation.

[0480] As an embodiment, second signaling is received in response to receiving the first RRC message.

[0481] As an embodiment, as a response to receiving the second signaling, the first Preamble is sent on the first candidate cell.

[0482] As an embodiment, the field ltm-EarlyUL-SyncConfig-r18 in the first RRC message configures the random access configuration information of the first candidate cell.

[0483] As an embodiment, the field ltm-EarlyUL-SyncConfig-r19 in the first RRC message configures the random access configuration information of the first candidate cell.

[0484] As an embodiment, the EarlyUL-SyncConfig field in the first RRC message configures the random access configuration information of the first candidate cell.

[0485] As an embodiment, the field RACH-ConfigGeneric in the first RRC message configures the random access configuration information of the first candidate cell.

[0486] As an embodiment, the random access configuration information includes the uplink TA offset n-TimingAdvanceOffset of the first candidate cell.

[0487] As an embodiment, the random access configuration information includes the ssb-PerRACH-Occasion of the first candidate cell.

[0488] As an embodiment, the random access configuration information includes the PRACH subcarrier spacing of the first candidate cell used for LTM.

[0489] As an embodiment, the second signaling is a PDCCH order.

[0490] As an embodiment, the second signaling is a format 1_0DCI.

[0491] As an embodiment, the second signaling indicates the first Preamble.

[0492] As an embodiment, the second signaling configures random access configuration information of the first candidate cell.

[0493] As an embodiment, the second signaling indicates the first Preamble from the random access configuration information of the first candidate cell configured by the first RRC message.

[0494] As an embodiment, the second signaling indicates the Preamble index of the first Preamble.

[0495] As an embodiment, the second signaling indicates whether the uplink carrier of the first Preamble is SUL.

[0496] As an embodiment, the second signaling indicates the SS / PBCH index of the first Preamble.

[0497] As an embodiment, the second signaling indicates the PRACH Mask index of the first Preamble.

[0498] As an embodiment, the second signaling indicates the sending cell of the first Preamble.

[0499] As an embodiment, the cell sending the first Preamble is the first candidate cell.

[0500] As an embodiment, the second signaling indicates whether the first Preamble is a retransmission.

[0501] As an embodiment, the second signaling includes a retransmission indication of the first Preamble.

[0502] As an embodiment, the first Preamble is sent as a response to receiving the first RRC message.

[0503] As an embodiment, the first RRC message configures random access configuration information of the first Preamble.

[0504] As an embodiment, the first RRC message includes a first subfield, and the first subfield configures the random access configuration information of the first Preamble.

[0505] As an embodiment, the first subfield is RACH-ConfigDedicated IE.

[0506] As an embodiment, the first subfield is earlyUL-syncConfigDedicated IE.

[0507] As an embodiment, the first sub-domain is the earlyUL-SyncCFRA-Config domain.

[0508] As an embodiment, the first sub-field is an earlyRACH-CFRA-Config field.

[0509] As an embodiment, the first sub-domain is the earlyTA-CFRA-Config domain.

[0510] As an embodiment, the name of the first sub-domain includes at least earlyUL-sync.

[0511] As an embodiment, the name of the first subdomain contains at least earlyUL.

[0512] As an embodiment, the name of the first subdomain contains at least earlyRACH.

[0513] As an embodiment, the name of the first subdomain contains at least early.

[0514] As an embodiment, the name of the first subdomain contains at least CFRA.

[0515] As an embodiment, the name of the first subdomain includes at least RACH.

[0516] As an embodiment, the first sub-domain includes a RACH-ConfigDedicated domain.

[0517] As an embodiment, the first subdomain includes a CFRA domain.

[0518] As an embodiment, the first subdomain configures a sending cell of the first Preamble.

[0519] As an embodiment, the first subdomain configures the first candidate cell as a sending cell of the first Preamble.

[0520] As an embodiment, the first subdomain configures the SSB resources associated with the first Preamble.

[0521] As an embodiment, the first subdomain configures the SSB-Index associated with the first Preamble.

[0522] As an embodiment, the first subfield configures the Preamble Index of the first Preamble.

[0523] As an embodiment, the first subfield configures the RA occasion of the first Preamble.

[0524] As an embodiment, the first sub-domain configures the PRACH Mask Index of the first Preamble.

[0525] As an embodiment, the first node sends the first Preamble multiple times.

[0526] As an embodiment, the first subfield configures the number of repetitions of sending the first Preamble.

[0527] As an embodiment, the first sub-domain configures a repetition period for sending the first Preamble.

[0528] As an embodiment, the first subfield configures a power increase step size for sending the first Preamble.

[0529] As an embodiment, the first sub-domain configures a maximum power limit for sending the first Preamble.

[0530] As an embodiment, the first Preamble is for early uplink synchronization.

[0531] As an embodiment, the sentence "as a response to sending the first Preamble on the first candidate cell, determining that the random access procedure corresponding to the first Preamble is successfully completed" means: once the first node sends the first Preamble on the first candidate cell, it is considered that the random access procedure corresponding to the first Preamble is successfully completed.

[0532] As an embodiment, the sentence "as a response to sending the first Preamble on the first candidate cell, determining that the random access procedure corresponding to the first Preamble is successfully completed" means: when the first node sends the first Preamble one or more times on the first candidate cell, when the number of times the first Preamble is sent reaches the number of repetitions of the first Preamble sent configured by the first subdomain, stop sending the first Preamble, and it is considered that the random access procedure corresponding to the first Preamble is successfully completed.

[0533] As an embodiment, the first Preamble triggers the first signaling.

[0534] As an embodiment, the first signaling is received as a response to the first Preamble being sent.

[0535] As an embodiment, the first signaling depends on the sending of the first Preamble.

[0536] As an embodiment, the first DCI is a format 1_0 DCI.

[0537] As an embodiment, the second signaling is the first DCI.

[0538] As an embodiment, the first DCI is the second signaling.

[0539] As an embodiment, the first DCI schedules the transmission of the first Preamble.

[0540] As an embodiment, the first Preamble is sent as a response to receiving the first DCI.

[0541] As an embodiment, the sending of the first Preamble depends on the reception of the first DCI.

[0542] As an embodiment, the first DCI indicates the physical layer parameters sent by the first Preamble from the random access configuration information of the first candidate cell configured by the first RRC message.

[0543] As an embodiment, the first DCI indicates the index of the first Preamble.

[0544] As an embodiment, the first DCI indicates the sending cell of the first Preamble.

[0545] As an embodiment, the DCI indicates that the first candidate cell is the sending cell of the first Preamble.

[0546] Example 6

[0547] Example 6 illustrates a schematic diagram of a first bitmap included in a first signaling according to an embodiment of the present application, as shown in FIG6 .

[0548] In embodiment 6, the first signaling includes a first bitmap, the first bit in the first bitmap indicates the first candidate cell, and the first bit is set to 1 to indicate that the first signaling includes the first timing advance command.

[0549] As an embodiment, the second bit in the first bitmap indicates a second candidate cell, and the second bit is set to 0 to indicate that the first signaling does not include a timing advance command for the candidate cell indicated by the second bit.

[0550] As an embodiment, the third bit in the first bitmap is reserved.

[0551] As an embodiment, any bit in the first bitmap is not reserved.

[0552] As an embodiment, each bit other than the first timing advance command in the eight-bit group to which the first timing advance command belongs is reserved.

[0553] As an embodiment, at least one bit other than the first timing advance command in the eight-bit group to which the first timing advance command belongs is reserved.

[0554] As an embodiment, the octet to which the first timing advance command belongs includes a fourth bit, and the fourth bit indicates a TAG ID corresponding to the first timing advance command.

[0555] As a sub-embodiment of the above embodiment, only when the first candidate cell is configured with multiple TAG IDs, the fourth bit of the octet to which the first timing advance command belongs indicates the TAG ID corresponding to the first timing advance command.

[0556] As a sub-embodiment of the above embodiment, if the first candidate cell is configured with only one TAG ID, the fourth bit of the octet to which the first timing advance command belongs is reserved.

[0557] As an embodiment, the value of the reserved bit is 0.

[0558] As an embodiment, the number of valid bits in the first bitmap depends on the number of candidate cells configured for the first serving cell.

[0559] As an embodiment, the number of valid bits in the first bitmap is equal to the number of candidate cells configured for the first serving cell.

[0560] As an embodiment, the number of valid bits in the first bitmap does not exceed the number of candidate cells configured for the first serving cell.

[0561] As an embodiment, the number of valid bits in the first bitmap depends on the number of candidate cells configured for the first serving cell and supporting early uplink synchronization.

[0562] As an embodiment, the number of valid bits in the first bitmap is equal to the number of candidate cells configured for the first serving cell and supporting early uplink synchronization.

[0563] As an embodiment, the number of valid bits in the first bitmap does not exceed the number of candidate cells configured for the first serving cell and supporting early uplink synchronization.

[0564] As an embodiment, the number of valid bits in the first bitmap depends on the number of candidate cells configured for the first serving cell, supporting early uplink synchronization and configured with execution conditions.

[0565] As an embodiment, the number of valid bits in the first bitmap is equal to the number of candidate cells configured for the first serving cell, supporting early uplink synchronization and configured with execution conditions.

[0566] As an embodiment, the number of valid bits in the first bitmap does not exceed the number of candidate cells configured for the first serving cell, supporting early uplink synchronization and configured with execution conditions.

[0567] As an embodiment, the valid bits in the first bit map refer to the unreserved bits in the first bit map.

[0568] As an embodiment, the reserved bits in the first bit map refer to the bits in the first bit map that do not indicate any candidate cell.

[0569] As an embodiment, the valid bits in the first bit map refer to all bits in the first bit map.

[0570] As an embodiment, the valid bits in the first bit map refer to some bits in the first bit map.

[0571] As an embodiment, the valid bits in the first bit map are continuous bits in the first bit map.

[0572] As an embodiment, the valid bits in the first bit map are located in the first N consecutive bits in the first bit map.

[0573] As an embodiment, N is a non-negative integer.

[0574] As an embodiment, N is the number of valid bits in the first bitmap.

[0575] As an embodiment, the order of candidate cells indicated by the valid bits in the first bitmap depends on the first RRC message.

[0576] As an embodiment, the order of candidate cells indicated by the valid bits in the first bitmap depends on the order of candidate cells in the first RRC message configuration.

[0577] As an embodiment, the order of candidate cells indicated by the valid bits in the first bitmap depends on the order of candidate cells in the CondReconfigToAddModList field and the CondReconfigToRemoveList field in the first RRC message configuration.

[0578] As an embodiment, the order of candidate cells indicated by the valid bits in the first bitmap depends on the first UE variable.

[0579] As an embodiment, the order of candidate cells indicated by the valid bits in the first bitmap depends on the order of candidate cells stored in the first UE variable.

[0580] As an embodiment, the order of candidate cells indicated by the valid bits in the first bitmap depends on the order of elements in the ltm-CandidateList field in the first UE variable.

[0581] As an embodiment, the order of candidate cells indicated by the valid bits in the first bitmap is the order of candidate cells in the first RRC message configuration.

[0582] As an embodiment, the order of candidate cells indicated by the valid bits in the first bitmap is the order of candidate cells stored in the first UE variable.

[0583] As an embodiment, the order of candidate cells indicated by the valid bits in the first bitmap is the order of elements in the ltm-CandidateList field in the first UE variable.

[0584] As an embodiment, the value of the reserved bit is equal to the value of the bit in the valid bit indicating that the first signaling does not include the timing advance command of the candidate cell indicated by it.

[0585] As an embodiment, the first signaling includes M timing advance commands.

[0586] As an embodiment, M is the number of bits with a value of 1 in the first bitmap.

[0587] As an embodiment, M is the number of bits with a value of 1 in the valid bits of the first bit map.

[0588] As an embodiment, the M is the number of bits in the first bitmap indicating that the first signaling includes the timing advance command of the candidate cell indicated by it.

[0589] As an embodiment, the M timing advance commands in the first signaling correspond to the bits in the first bitmap.

[0590] As an embodiment, the M timing advance commands in the first signaling correspond to valid bits in the first bitmap.

[0591] As an embodiment, the M timing advance commands in the first signaling correspond to bits with a value of 1 among the valid bits in the first bitmap.

[0592] As an embodiment, the M timing advance commands in the first signaling correspond to the bits whose values ​​are 1 in order from low to high among the valid bits in the first bitmap.

[0593] As an embodiment, the M timing advance commands in the first signaling correspond to the bits whose values ​​are 1 in order from high to low among the valid bits in the first bitmap.

[0594] As an embodiment, the first bit in the first bit map is a valid bit.

[0595] As an embodiment, the second bit in the first bit map is a valid bit.

[0596] As an embodiment, the third bit in the first bit map is not a valid bit.

[0597] Example 7

[0598] Example 7 illustrates a schematic diagram of starting or restarting a first timer according to an embodiment of the present application, as shown in FIG7 .

[0599] In Example 7, the first node in the present application receives a first signaling in step 701; in step 702, as a response to the reception of the first signaling, starts or restarts a first timer; wherein, the first timer is for uplink time alignment of the first candidate cell.

[0600] As an embodiment, the value of the first counter is a default value.

[0601] As an embodiment, the value of the first counter is configurable.

[0602] As an embodiment, the value of the first counter is predefined.

[0603] As an embodiment, the first timer is a timeAlignmentTimer.

[0604] As an embodiment, the first RRC message includes the value of the first timer.

[0605] As an embodiment, a field in the first RRC message indicates the value of the first timer.

[0606] As an embodiment, when the first timer expires, it is considered that uplink desynchronization occurs in the first candidate cell, that is, the TA of the first candidate cell is invalid.

[0607] As an embodiment, the invalid TA of the first candidate cell means that there is no valid TA on the first candidate cell.

[0608] As an embodiment, the first signaling indicates one or more timing advance commands, and as a response to the first signaling being received, one or more timers are started or restarted, and the number of the one or more timers is equal to the number of the one or more timing advance commands.

[0609] As a sub-embodiment of the above embodiment, the one or more timing advances and timers are for uplink time alignment of one or more candidate cells.

[0610] As a sub-embodiment of the above embodiment, the first RRC message indicates the value of the timer of each candidate cell.

[0611] As a sub-embodiment of the above embodiment, the first RRC message indicates the value of the timer of each candidate cell supporting early uplink synchronization.

[0612] As a sub-embodiment of the above embodiment, the first RRC message indicates the value of the timer of each candidate cell that supports early uplink synchronization and is configured with execution conditions.

[0613] As a sub-embodiment of the above embodiment, the first signaling indicates the value of the one or more timers.

[0614] As an embodiment, the first signaling indicates one or more timing advance commands, and as a response to the first signaling being received, a timer is started or restarted, and the timer is the first timer.

[0615] As a sub-embodiment of the above embodiment, the first timer is for uplink time alignment of one or more candidate cells.

[0616] As a sub-embodiment of the above embodiment, the one or more candidate cells are candidate cells in which a timing advance command is indicated in the first signaling.

[0617] As a sub-embodiment of the above embodiment, the first candidate cell is one of the one or more candidate cells.

[0618] As a sub-embodiment of the above embodiment, the timing advances of the one or more candidate cells are maintained by sharing the first timer.

[0619] As a sub-embodiment of the above embodiment, the first RRC message indicates the value of the first timer.

[0620] As a sub-embodiment of the above embodiment, the first signaling indicates the value of the first timer.

[0621] As a sub-embodiment of the above embodiment, when the first timer expires, the TAs of all candidate cells in the one or more candidate cells are considered invalid.

[0622] As a sub-embodiment of the above embodiment, when the first timer expires, it is considered that all candidate cells in the one or more candidate cells are out of uplink synchronization.

[0623] As a sub-embodiment of the above embodiment, when the first condition is not met, a third signaling is sent to the base station maintaining the first serving cell in response to the expiration of the first timer.

[0624] As a sub-embodiment of the above embodiment, the third signaling indicates that the first node has not yet been switched.

[0625] As an embodiment, the uplink timing of the target signaling being dependent on the first timing advance command includes: when the first timer is not running, the uplink timing of the target signaling is not dependent on the first timing advance command.

[0626] As a sub-embodiment of the above embodiment, the not-in-operation state refers to expiry.

[0627] As a sub-embodiment of the above embodiment, the non-operation refers to stopping.

[0628] As an embodiment, the uplink timing of the target signaling is dependent on the first timing advance command, including: when the first node does not store the first timing advance command, the uplink timing of the target signaling is not dependent on the first timing advance command.

[0629] As an embodiment, the uplink timing of the target signaling is dependent on the first timing advance command, including: the uplink timing of the target signaling is dependent on the first timing advance command only when the first timer is running.

[0630] As an embodiment, the uplink timing of the target signaling being dependent on the first timing advance command includes: when at least the first timer is running, the uplink timing of the target signaling being dependent on the first timing advance command.

[0631] Example 8

[0632] Embodiment 8 illustrates a schematic diagram of the relationship between the first signaling, the first time information, and the first timer according to an embodiment of the present application, as shown in FIG8 .

[0633] In embodiment 8, the first signaling includes first time information, and the value of the first timer depends on the first time information.

[0634] As an embodiment, the first timer is set to a first time length, and the first time length depends on the first time information.

[0635] As an embodiment, the first time length is the first time information.

[0636] As an embodiment, the first time information is the value of the first timer.

[0637] As an embodiment, the first time length is the maximum running time of the first timer.

[0638] As an embodiment, the first time length is determined according to the first time information.

[0639] As an embodiment, the first time information indicates the expiration time of the first timer.

[0640] As an embodiment, the first time information is an index.

[0641] As an embodiment, the first time information is an index of a time length.

[0642] As an embodiment, the first time information is an index of a time interval.

[0643] As an embodiment, the first time information is an index of a deadline.

[0644] As an embodiment, the time length is predefined, and the first time information indicates a time length.

[0645] As an embodiment, the time interval is predefined, and the first time information indicates a time interval.

[0646] As an embodiment, the deadline is predefined, and the first time information indicates a deadline.

[0647] As an embodiment, the first time information and the first timing advance command belong to two consecutive octets.

[0648] As an embodiment, there is no bit between the first time information and the first timing advance command.

[0649] As an embodiment, there is at least one bit between the first time information and the first timing advance command.

[0650] As an embodiment, the length of the first timer has a default value.

[0651] As an embodiment, the length of the first timer is configurable.

[0652] As an embodiment, the length of the first timer is configured by the first RRC message.

[0653] As an embodiment, the length of the first timer is configured by the first signaling.

[0654] As an embodiment, the length of the first timer is configured by the first time information.

[0655] As an embodiment, the length of the first timer depends on the first time information, including: the length of the first timer depends on the value of the first time information.

[0656] As an embodiment, the length of the first timer depends on the first time information, including: the length of the first timer depends on the value indicated by the first time information and the time length between the reception time of the first signaling and the sending time of the first Preamble.

[0657] As an embodiment, the length of the first timer depends on the first time information, including: the length of the first timer is equal to the value indicated by the first time information minus the time length between the reception time of the first signaling and the sending time of the first Preamble.

[0658] Example 9

[0659] Embodiment 9 illustrates a schematic diagram of storing a first timing advance command according to an embodiment of the present application, as shown in FIG9 .

[0660] In Example 9, the first node in the present application receives a first signaling in step 901; and stores the first timing advance command in step 902 as a response to the reception of the first signaling.

[0661] As an embodiment, storing the first timing advance command refers to storing the TA value indicated by the first timing advance command as the TA of the first candidate cell.

[0662] As an embodiment, storing the first timing advance command means: using the TA value indicated by the first timing advance command to update the TA of the first candidate cell stored by the first node.

[0663] As an embodiment, storing the first timing advance command refers to: storing the first timing advance command in a first UE variable.

[0664] As an embodiment, the first UE variable is in the RRC sublayer.

[0665] As an embodiment, the first UE variable is in the MAC sublayer.

[0666] As an embodiment, the first UE variable is a variable.

[0667] As an embodiment, the first UE variable is a buffer.

[0668] As an embodiment, the first UE variable is a memory.

[0669] As an embodiment, the first UE variable includes the first condition and the first configuration information for the first candidate cell.

[0670] As an embodiment, the first UE variable is VarLTM-Config.

[0671] As an embodiment, the first UE variable is ltm-ReferenceConfiguration.

[0672] As an embodiment, the first UE variable is ltm-CandidateList.

[0673] As an embodiment, the first UE variable is VarCLTM-Config.

[0674] As an embodiment, the first UE variable is VarCondLTM-Config.

[0675] As an embodiment, the first UE variable is VarCondLTM-candidateTA.

[0676] As an embodiment, the first timing advance command is stored in a subfield in the first UE variable.

[0677] As an embodiment, the first timing advance command is stored in the LTM-Candidate-r18 field in the first UE variable.

[0678] As an embodiment, as a response to the first signaling being received, the time when the first signaling is received is stored.

[0679] As an embodiment, in response to the first timing advance command being received, the time at which the first timing advance command is received is stored.

[0680] As an embodiment, as a response to the first timing advance command being received, the time when the first signaling is received is stored.

[0681] As an embodiment, as a response to the first signaling being received, the time when the first timing advance command is received is stored.

[0682] As an embodiment, the first timer is started or restarted in response to the first signaling being received.

[0683] As an embodiment, in response to the first signaling being received, timeAlignmentTimer for uplink time alignment of the first candidate cell is not started or is restarted.

[0684] As an embodiment, the first timer is started or restarted in response to the first timing advance command being stored.

[0685] As an embodiment, in response to expiration of the first timer, the stored first timing advance command is discarded.

[0686] As an embodiment, in response to expiration of the first timer, the first timer is stopped.

[0687] As an embodiment, the uplink timing of the target signaling depends on the first timing advance command, including: when a second condition is met, the uplink timing of the target signaling depends on the first timing advance command.

[0688] As a sub-embodiment of the above embodiment, the second condition is that the first timer is running.

[0689] As a sub-embodiment of the above embodiment, the second condition is that the sending time of the target signaling belongs to the first time interval.

[0690] As a subsidiary embodiment of the above sub-embodiment, the start time of the first time interval is the time when the stored first signaling is received.

[0691] As a subsidiary embodiment of the above sub-embodiment, the start time of the first time interval is the time when the stored first timing advance command is received.

[0692] As a subsidiary embodiment of the above sub-embodiment, the length of the first time interval is predefined.

[0693] As a subsidiary embodiment of the above sub-embodiment, the length of the first time interval is configurable.

[0694] As a subsidiary embodiment of the above sub-embodiment, the length of the first time interval is configured by the first signaling.

[0695] As a subsidiary embodiment of the above sub-embodiment, the length of the first time interval is configured by the first RRC message.

[0696] Example 10

[0697] 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 .

[0698] The first receiver 1002 receives a first RRC message, the first RRC message including a first condition and first configuration information for a first candidate cell, the first configuration information including a physical layer configuration of the first candidate cell, the first candidate cell being configured for a first serving cell; and receives first signaling, the first signaling indicating the first candidate cell, the first signaling indicating a first timing advance command.

[0699] The first processor 1000, after receiving the first signaling, applies the first configuration information and sends target signaling in response to the first condition being satisfied;

[0700] In embodiment 10, the first signaling is signaling of a protocol layer below the RRC sublayer; when the first signaling is received, any random access process is not in progress; the uplink timing of the target signaling depends on the first timing advance command; and the first condition depends on measurement.

[0701] As an embodiment, the first transmitter 1001 sends a first Preamble on the first candidate cell before the first signaling is received; the first processor 1000, as a response to sending the first Preamble on the first candidate cell, determines that the random access process corresponding to the first Preamble is successfully completed; the first RRC message includes random access configuration information for the first candidate cell, and the random access configuration information includes at least one of the uplink carrier, SSB, and PRACH mask associated with the first Preamble

[0702] As an embodiment, the first receiver 1002 receives a first DCI, where the DCI indicates an index of the first Preamble; the first DCI triggers the first Preamble.

[0703] As an embodiment, the first signaling includes a first bit map, the first bit in the first bit map indicates the first candidate cell, and the first bit is set to 1 to indicate that the first signaling includes the first timing advance command.

[0704] As an embodiment, the first processor 1000 starts or restarts a first timer in response to receiving the first signaling; the first timer is for uplink time alignment of the first candidate cell.

[0705] As an embodiment, the first signaling includes first time information, and the value of the first timer depends on the first time information.

[0706] As an embodiment, the first processor 1000 stores the first timing advance command in response to receiving the first signaling.

[0707] 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.

[0708] As an embodiment, the first receiver 1002 includes at least the antenna 452 and the receiver 454 in FIG. 4 of the present application.

[0709] 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.

[0710] As an embodiment, the first transmitter 1001 includes at least the antenna 452 and the transmitter 454 in FIG. 4 of the present application.

[0711] Example 11

[0712] 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.

[0713] The second transmitter 1101 sends a first RRC message, where the first RRC message includes a first condition and first configuration information for a first candidate cell, where the first configuration information includes a physical layer configuration of the first candidate cell, and the first candidate cell is configured for a first serving cell; and sends a first signaling, where the first signaling indicates the first candidate cell and the first signaling indicates a first timing advance command.

[0714] In embodiment 11, after the first signaling is received, as a response to the first condition being satisfied, the receiver of the first signaling applies the first configuration information and sends a target signaling; the uplink timing of the target signaling depends on the first timing advance command; the first signaling is the signaling of the protocol layer below the RRC sublayer; when the first signaling is received, any random access process is not in progress; the first condition depends on measurement.

[0715] As an embodiment, the second transmitter 1101 sends a first DCI, where the DCI indicates an index of the first Preamble; the first DCI triggers the first Preamble.

[0716] As an embodiment, the first signaling includes a first bit map, the first bit in the first bit map indicates the first candidate cell, and the first bit is set to 1 to indicate that the first signaling includes the first timing advance command.

[0717] As an embodiment, the receiver of the first signaling starts or restarts a first timer in response to receipt of the first signaling; the first timer is for uplink time alignment of the first candidate cell.

[0718] As an embodiment, the first signaling includes first time information, and the value of the first timer depends on the first time information.

[0719] As an embodiment, the receiver of the first signaling stores the first timing advance command as a response to receipt of the first signaling.

[0720] 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.

[0721] As an embodiment, the second transmitter 1101 includes at least the antenna 420 and the transmitter 418 in FIG. 4 of the present application.

[0722] 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.

[0723] As an embodiment, the second receiver 1102 includes at least the antenna 420 and the receiver 418 in FIG. 4 of the present application.

[0724] Example 12

[0725] Embodiment 12 illustrates a structural block diagram of a processing device in a third node according to an embodiment of the present application, as shown in FIG12. In FIG12, the processing device 1200 in the third node includes a third transmitter 1201 and a third receiver 1202.

[0726] The third processor 1200 receives a first preamble on a first candidate cell; in response to receiving the first preamble, sends a second message to a second node, wherein the second message triggers first signaling, the first signaling indicating the first candidate cell and indicating a first timing advance command; and receives target signaling.

[0727] In embodiment 12, the first RRC message includes a first condition and first configuration information for the first candidate cell, the first configuration information includes the physical layer configuration of the first candidate cell, and the first candidate cell is configured to the first serving cell; the first RRC message includes random access configuration information for the first candidate cell, and the random access configuration information includes at least one of the uplink carrier, SSB, and PRACH mask associated with the first Preamble; the first signaling is the signaling of the protocol layer below the RRC sublayer; when the first signaling is received, any random access process is not in progress; the uplink timing of the target signaling depends on the first timing advance command; after the first signaling is received, as a response to the first condition being met, the receiver of the first signaling applies the first configuration information and sends the target signaling; the receiver of the first signaling is the receiver of the first RRC message; the uplink timing of the target signaling depends on the first timing advance command.

[0728] As an embodiment, the third transmitter 1201 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.

[0729] As an embodiment, the third transmitter 1201 includes at least the antenna 420 and the transmitter 418 in FIG. 4 of the present application.

[0730] As an embodiment, the third receiver 1202 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.

[0731] As an embodiment, the third receiver 1202 includes at least the antenna 420 and the receiver 418 in FIG. 4 of the present application.

[0732] Example 13

[0733] Embodiment 13 illustrates a schematic diagram of an artificial intelligence processing system according to an embodiment of the present application, as shown in FIG13. FIG13 includes a first module, a second module, a third module, a fourth module and a fifth module.

[0734] In Example 13, 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.

[0735] 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.

[0736] The above method avoids air interface signaling interaction and shortens transmission delay.

[0737] 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.

[0738] The above method reduces the hardware complexity of the first node.

[0739] 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.

[0740] The above method balances the hardware complexity and transmission delay of the first node.

[0741] As an embodiment, the first module is used for data collection.

[0742] As an embodiment, the first module is responsible for data collection.

[0743] As an embodiment, the first module has a data collection function.

[0744] As an embodiment, the second module is used for model training.

[0745] As an embodiment, the second module is responsible for model training.

[0746] As an embodiment, the second module has a model training function.

[0747] As an embodiment, the second module performs AI / ML model training.

[0748] As an embodiment, the second module performs validation.

[0749] As an embodiment, the second module performs testing.

[0750] As an embodiment, the second module generates model performance metrics.

[0751] As an embodiment, the second module is responsible for data preparation.

[0752] As an embodiment, the data preparation includes at least one of data pre-processing, cleaning, formatting, or transformation.

[0753] As an embodiment, the third module is used for inference.

[0754] As an embodiment, the third module has a reasoning function.

[0755] As an embodiment, the third module is responsible for reasoning.

[0756] As an embodiment, the fourth module is used for model storage.

[0757] As an embodiment, the fourth module has a model storage function.

[0758] As an embodiment, the fourth module is responsible for storing the trained model.

[0759] As an embodiment, the fourth module is responsible for storing trained models that can be used to perform reasoning processing.

[0760] As an embodiment, the fifth module is used for management.

[0761] As an embodiment, the fifth module is responsible for management.

[0762] As an embodiment, the fifth module has a management function.

[0763] As an embodiment, the first data set is training data.

[0764] As an embodiment, the second data set is inference data.

[0765] As an embodiment, the third data set is monitoring data.

[0766] As an embodiment, the first parameter group includes monitoring output.

[0767] As an embodiment, the second type of parameter group includes management instructions.

[0768] As an embodiment, the second type of parameter group is used for fine-tuning of the inference function.

[0769] As an embodiment, the second type of parameter group includes an identifier of the model.

[0770] As an embodiment, the second type of parameter group is used to select a model.

[0771] As an embodiment, the second type of parameter group is used for switching models.

[0772] As an embodiment, the second type of parameter group is used to activate / deactivate the model.

[0773] As an embodiment, the second type of parameter group is used to fall back from AI-ML operation to non-AI-ML operation.

[0774] As an embodiment, the third type of parameter group includes a model transfer request (Model Transfer Request).

[0775] As an embodiment, the third parameter group includes a model delivery request (Model Delivery Request).

[0776] As an embodiment, the fourth parameter group includes a trained model (Trained Model).

[0777] As an embodiment, the fourth parameter group includes an updated model (Updated Model).

[0778] As an embodiment, the fourth type of parameter group indicates the identification of the model.

[0779] As an embodiment, the fifth parameter group includes model transfer.

[0780] As an embodiment, the fifth parameter group includes model delivery.

[0781] As an embodiment, the fifth type of parameter group indicates the identification of the model.

[0782] As an embodiment, the first type of output includes a monitoring output.

[0783] As an embodiment, the first type of output exists.

[0784] As an embodiment, the first type of output does not exist.

[0785] As an embodiment, the second type of output includes inference output.

[0786] As an embodiment, the second type of output is used by the fifth module to monitor the performance of the AI / ML model.

[0787] As an embodiment, the second type of output is used by the fifth module to monitor the performance of the AI / ML function.

[0788] As an embodiment, the second type of output exists.

[0789] As an embodiment, the second type of output does not exist.

[0790] As an embodiment, the artificial intelligence processing system generates or assists in generating at least one of a judgment on whether the first condition is met, a determination of the length of the first timer, or a determination of the validity of the TA for uplink time alignment of the first candidate cell.

[0791] As an embodiment, the fifth module generates or assists in generating at least one of a judgment on whether the first condition is met, a determination of the length of the first timer, or a determination of the validity of the TA for uplink time alignment of the first candidate cell.

[0792] As an embodiment, the third module generates or assists in generating at least one of a judgment on whether the first condition is met, a determination of the length of the first timer, or a determination of the validity of the TA for uplink time alignment of the first candidate cell.

[0793] As an embodiment, the second type of output includes at least one of a determination of whether the first condition is met, a determination of the length of the first timer, or a determination of the validity of the TA for uplink time alignment of the first candidate cell.

[0794] As an embodiment, at least one of the first data set or the second data set includes the first RRC message.

[0795] As an embodiment, at least one of the first data set or the second data set includes the first configuration information.

[0796] As an embodiment, at least one of the first data set or the second data set includes the first condition.

[0797] As an embodiment, at least one of the first data set or the second data set includes the first candidate cell configuration.

[0798] As an embodiment, at least one of the first data set or the second data set includes the measurement.

[0799] As an embodiment, at least one of the first data set or the second data set includes the first signaling.

[0800] As an embodiment, at least one of the first data set or the second data set includes the first time information.

[0801] 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.

[0802] As an embodiment, at least one of the first data set, the second data set, or the third data set includes the first configuration information.

[0803] As an embodiment, at least one of the first data set, the second data set, or the third data set includes the first condition.

[0804] As an embodiment, at least one of the first data set, the second data set, or the third data set includes the first candidate cell configuration.

[0805] As an embodiment, at least one of the first data set, the second data set, or the third data set includes the measurement.

[0806] As an embodiment, at least one of the first data set, the second data set, or the third data set includes the first signaling.

[0807] As an embodiment, at least one of the first data set, the second data set, or the third data set includes the first time information.

[0808] As an embodiment, Example 13 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 13.

[0809] 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.

[0810] 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, Comprising: A first receiver that receives a first RRC message, the first RRC message including a first condition and first configuration information for a first candidate cell, the first configuration information including a physical layer configuration of the first candidate cell, and the first candidate cell being configured for a first serving cell; Receiving a first signaling, the first signaling indicating the first candidate cell, and the first signaling indicating a first timing advance command; A first processor that, after the first signaling is received, in response to the first condition being satisfied, applies the first configuration information and sends a target signaling; Wherein, the first signaling is a signaling of a protocol layer below the RRC sublayer; When the first signaling is received, no random access procedure is in progress; the uplink timing of the target signaling depends on the first timing advance command; and the first condition depends on measurement.

2. The first node according to claim 1, characterized in that, Comprising: A first transmitter that, before the first signaling is received, sends a first preamble on the first candidate cell; The first processor that, in response to sending the first preamble on the first candidate cell, determines that the random access procedure corresponding to the first preamble is successfully completed; Wherein, the first RRC message includes random access configuration information for the first candidate cell, and the random access configuration information includes at least one of an uplink carrier associated with the first preamble, an SSB, and a PRACH mask.

3. The first node according to claim 2, characterized in that, Comprising: The first receiver that receives a first DCI, the DCI indicating an index of the first preamble; Wherein, the first DCI triggers the first preamble.

4. The first node according to any one of claims 1 to 3, characterized in that, The first signaling includes a first bitmap, and a first bit in the first bitmap indicates the first candidate cell, and the first bit being set to 1 indicates that the first signaling includes the first timing advance command.

5. The first node according to any one of claims 1 to 4, characterized in that, Comprising: The first processor that, in response to the first signaling being received, starts or restarts a first timer; Wherein, the first timer is for uplink time alignment of the first candidate cell.

6. The first node according to claim 5, wherein The first signaling includes first time information, and the value of the first timer depends on the first time information.

7. The first node according to any one of claims 1 to 6, characterized in that, Comprising: The first processor that, in response to the first signaling being received, stores the first timing advance command.

8. A second node used for wireless communication, characterized in that, Comprising: A second processor that sends a first RRC message, the first RRC message including a first condition and first configuration information for a first candidate cell, the first configuration information including a physical layer configuration of the first candidate cell, and the first candidate cell being configured for a first serving cell; Sending a first signaling, the first signaling indicating the first candidate cell, and the first signaling indicating a first timing advance command; Among them, after the first signaling is received, in response to the satisfaction of the first condition, the receiver of the first signaling applies the first configuration information and sends a target signaling; the uplink timing of the target signaling depends on the first timing advance command; the first signaling is a signaling of a protocol layer below the RRC sublayer; when the first signaling is received, no random access procedure is in progress; the first condition depends on measurement.

9. A third node used for wireless communication, characterized in that, Including: A third processor that receives a first preamble on a first candidate cell; In response to receiving the first preamble, send a second message to a second node, the second message triggering a first signaling that indicates the first candidate cell and the first signaling indicates a first timing advance command; Receive a target signaling; Among them, the first RRC message includes a first condition and a first configuration information for the first candidate cell, the first configuration information includes the physical layer configuration of the first candidate cell, and the first candidate cell is configured for a first serving cell; the first RRC message includes random access configuration information for the first candidate cell, and the random access configuration information includes at least one of the uplink carrier associated with the first preamble, the SSB, and the PRACH mask; the first signaling is a signaling of a protocol layer below the RRC sublayer; when the first signaling is received, no random access procedure is in progress; the uplink timing of the target signaling depends on the first timing advance command; after the first signaling is received, in response to the satisfaction of the first condition, the receiver of the first signaling applies the first configuration information and sends a target signaling; the receiver of the first signaling is the receiver of the first RRC message; the uplink timing of the target signaling depends on the first timing advance command.

10. A method used in a first node for wireless communication, characterized in that, Including: Receive a first RRC message, the first RRC message including a first condition and a first configuration information for a first candidate cell, the first configuration information including the physical layer configuration of the first candidate cell, and the first candidate cell being configured for a first serving cell; Receive a first signaling that indicates the first candidate cell and the first signaling indicates a first timing advance command; After the first signaling is received, in response to the satisfaction of the first condition, apply the first configuration information and send a target signaling; Among them, the first signaling is a signaling of a protocol layer below the RRC sublayer; When the first signaling is received, no random access procedure is in progress; the uplink timing of the target signaling depends on the first timing advance command; the first condition depends on measurement.

11. A method in a second node for use in wireless communication, characterized in that, Including: Send a first RRC message, the first RRC message including a first condition and a first configuration information for a first candidate cell, the first configuration information including the physical layer configuration of the first candidate cell, and the first candidate cell being configured for a first serving cell; Send a first signaling that indicates the first candidate cell and the first signaling indicates a first timing advance command; Among them, after the first signaling is received, in response to the satisfaction of the first condition, the receiver of the first signaling applies the first configuration information and sends a target signaling; the uplink timing of the target signaling depends on the first timing advance command; the first signaling is a signaling of a protocol layer below the RRC sublayer; when the first signaling is received, no random access process is in progress; the first condition depends on measurement.

12. A method in a third node for use in wireless communication, characterized in that, Including: Receiving a first preamble on a first candidate cell; In response to receiving the first preamble, sending a second message to a second node, the second message triggering a first signaling, the first signaling indicating the first candidate cell, the first signaling indicating a first timing advance command; Receiving a target signaling; Among them, the first RRC message includes a first condition and first configuration information for the first candidate cell, the first configuration information includes the physical layer configuration of the first candidate cell, and the first candidate cell is configured for a first serving cell; the first RRC message includes random access configuration information for the first candidate cell, and the random access configuration information includes at least one of an uplink carrier associated with the first preamble, an SSB, and a PRACH mask; the first signaling is a signaling of a protocol layer below the RRC sublayer; when the first signaling is received, no random access process is in progress; the uplink timing of the target signaling depends on the first timing advance command; after the first signaling is received, in response to the satisfaction of the first condition, the receiver of the first signaling applies the first configuration information and sends a target signaling; the receiver of the first signaling is the receiver of the first RRC message; the uplink timing of the target signaling depends on the first timing advance command.

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