Method and apparatus for continuous conditional LTM, and electronic device and storage medium

Abstract

Provided in the present disclosure are a method and apparatus for continuous conditional LTM, and an electronic device and a storage medium. The method comprises: when sending RRC information that indicates that conditional LTM has been completed, a terminal planning to start a new uplink transmission within a first time period.

Description

Methods, apparatus, electronic devices and storage media for continuous condition LTM

[0001] Related applications

[0002] This application claims priority to Chinese patent application filed on December 31, 2024, application number 202411998682X, entitled "Method, Apparatus, Electronic Device and Storage Medium for Continuous Condition LTM", the entire contents of which are incorporated herein by reference. Technical Field

[0003] This disclosure relates to the field of wireless communication technology, and in particular to a method, apparatus, electronic device, and storage medium for continuous conditional LTM. Background Technology

[0004] To address the issue of delayed LTM triggering in certain scenarios, leading to reduced handover success rates, 3GPP introduced technologies such as CHO and CPA / C in Release 16. These technologies enable terminals to complete LTM triggering without extensive signaling exchanges, thereby increasing system robustness.

[0005] In related technologies, LTM and traditional L3 Handover have the same robustness, and still face the aforementioned problems of late handover and reduced handover success rate. Meanwhile, with the increase in carrier frequency, the coverage radius of cells is becoming smaller, especially in scenarios where terminals move rapidly. The probability of frequently / continuously triggering LTM under certain conditions is also increasing, leading to long interruption times and severely impacting the user experience.

[0006] It should be noted that the information disclosed in the background section above is only used to enhance the understanding of the background of this disclosure, and therefore may include information that does not constitute prior art known to those skilled in the art. Summary of the Invention

[0007] According to one aspect of this disclosure, a method for continuous conditional LTM is provided, comprising: when a terminal sends RRC information indicating that conditional LTM has been completed, preparing to start a new uplink transmission within a first time period.

[0008] In some embodiments, the transmission of preparing to start a new uplink transmission within a first time period includes: preparing to start transmitting the first uplink information within the first time period.

[0009] In some embodiments, the first time includes at least one of a second time, a third time, a fourth time, a fifth time, or a sixth time.

[0010] In some embodiments, the second time is time uncertainty.

[0011] In some embodiments, the second time is the time period from when the terminal sends the RRCReconfigurationComplete message to when a condition that can trigger conditional LTM exists at the measurement reference point.

[0012] In some embodiments, the terminal sending RRCReconfigurationComplete is the starting point of the first time.

[0013] In some embodiments, the third time is the measurement time.

[0014] In some embodiments, the third time is the period from the end of the second time to the terminal performing LTM or handover to the target cell and the start of the fourth time.

[0015] In some embodiments, the fourth time is the interruption time.

[0016] In some embodiments, the fourth time period is the time period from when the terminal starts executing the conditional LTM to the target cell to when the terminal starts sending the first uplink transmission to the target cell.

[0017] In some embodiments, the fourth time includes at least one of a first sub-time, a second sub-time, a third sub-time, or a fourth sub-time; wherein, the first sub-time is the terminal processing time, including the application of target cell parameters and / or changes in L1 or L2; the second sub-time is the time for fine time tracking and acquiring all timing information of the target cell, etc.; the third sub-time is the time for SSB processing; and the fourth sub-time is the uncertainty of interruption or uncertainty of sending the first uplink transmission.

[0018] In some embodiments, the fifth time is the terminal execution preparation time for the conditional LTM.

[0019] In some embodiments, the fifth time begins when the terminal becomes aware that the conditions of the conditional LTM have been met and / or the identifier or ID of the target cell has been determined.

[0020] In some embodiments, the fifth time is shortened under preset conditions; wherein the preset conditions include: the terminal does not receive new RRC information containing a conditional LTM indication; each time the terminal performs a conditional LTM, it stores the information of the target cell acquired or processed during the execution preparation time; if the target cell of this conditional LTM handover is the target cell of a previously performed conditional LTM, the stored information is directly applied.

[0021] In some embodiments, the fifth time indicates that the stored target cell information becomes invalid when the terminal receives new RRC information containing a conditional LTM indication.

[0022] In some embodiments, the sixth time is the conditional LTM preprocessing time.

[0023] In some embodiments, the sixth time includes a fifth sub-time and / or a sixth sub-time. The fifth sub-time is the TCI state activation time of the candidate cell or the target cell. During the fifth sub-time, the terminal completes the pre-activation of the TCI state of the candidate cell or the target cell. The sixth sub-time is the uplink pre-synchronization time. During the sixth sub-time, the terminal completes uplink synchronization with the candidate cell or the target cell.

[0024] In some embodiments, before the terminal sends RRC information indicating that the conditional LTM has been completed, the method further includes: receiving signaling issued by the network; wherein the signaling is RRC signaling, used to indicate the conditional LTM and / or continuous conditional LTM, and the signaling contains the configuration of the conditional LTM and / or continuous conditional LTM.

[0025] In some embodiments, the configuration of conditional LTM and / or continuous conditional LTM includes any one or more of the following: configuration of LTM candidate cells; LTM execution conditions.

[0026] In some embodiments, the configuration of the LTM candidate cell includes any one or more of the following: LTM configuration LTM-Config; LTM candidate configuration LTM-Candidate; LTM CSI report configuration LTM-CSI-ReportConfig; LTM CSI resource configuration LTM-CSI-ResourceConfig; and random access preamble of the LTM candidate cell.

[0027] In some embodiments, the method further includes: when one or more LTM execution conditions are met, switching between conditional LTM and conditional LTM, wherein the LTM execution conditions include one or more triggering conditions.

[0028] In some embodiments, the triggering conditions include any one or more of the following: the service quality of the serving cell or the current cell is lower than a first threshold; the service quality of the neighboring cell, the candidate cell, or the target cell is higher than the service quality of the serving cell, the current cell, the PCell, or the PSCell by a first offset; the service quality of the serving cell, the current cell, the PCell, or the PSCell is lower than a second threshold, and the service quality of the neighboring cell, the SCell, the candidate cell, or the target cell is higher than a third threshold.

[0029] In some embodiments, the method further includes: evaluating whether the LTM execution conditions are met, wherein evaluating the LTM execution conditions includes: performing L1 and / or L3 measurements on the serving cell and / or LTM candidate cells.

[0030] In some embodiments, the evaluation reference signal for the LTM execution conditions includes a synchronization signal block (SSB) and / or channel state information reference information (CSI-RS); wherein the measured values ​​of the evaluation reference signal include any one or more of the following: reference signal received power (RSRP); reference signal received quality (RSRQ); and signal-to-interference-noise ratio (SINR).

[0031] In some embodiments, the method further includes: the evaluation reference signal of the LTM execution condition is the measurement object of the L1 and / or L3 measurement; the judgment object in the trigger condition is the L1 and / or L3 measurement result of the evaluation reference signal measurement value in the serving cell or current cell or PCell or PSCell or neighboring cell or SCell or candidate cell or target cell.

[0032] In some embodiments, performing conditional LTM or conditional LTM handover includes any one or more of the following: disengaging from the serving cell; handover to the target cell; applying the configuration of the target cell; wherein the target cell is one of the candidate cells or the target cell is the target cell of the previous conditional LTM.

[0033] In some embodiments, the terminal sending RRC information indicating that the condition LTM has been completed includes: the terminal sending RRCReconfigurationComplete to the network.

[0034] In some embodiments, the method further includes: continuing to monitor whether the trigger condition in the LTM execution condition of the conditional LTM configuration in the RRC signaling is met; when one or more LTM execution conditions are met, performing a continuous conditional LTM handover; after the terminal receives new RRC information containing a conditional LTM indication, it no longer performs a continuous conditional LTM handover based on the previous conditional LTM indication.

[0035] In some embodiments, starting a new uplink transmission includes: the terminal performing a conditional LTM or conditional LTM handover to a target cell; the handover is considered complete when the terminal sends the first uplink transmission to the target cell after handover to the target cell.

[0036] In some embodiments, the method further includes: if the terminal fails to complete uplink synchronization with the candidate cell or the target cell within the sixth sub-time of the sixth time period, the first uplink transmission when the terminal performs continuous conditional LTM handover is the PRACH sent by the terminal; if the terminal completes uplink synchronization with the candidate cell or the target cell within the sixth sub-time of the sixth time period, the first uplink transmission when the terminal performs conditional LTM or conditional LTM handover is uplink data or uplink signaling.

[0037] According to another aspect of this disclosure, an apparatus for continuous conditional LTM is also provided, comprising: a continuous conditional LTM module, configured to prepare to start a new uplink transmission within a first time when a terminal sends RRC information indicating that conditional LTM has been completed.

[0038] According to another aspect of this disclosure, an electronic device is also provided, comprising: a processor; and a memory for storing executable instructions of the processor; wherein the processor is configured to perform the continuous conditional LTM method described in any of the preceding claims by executing the executable instructions.

[0039] According to another aspect of this disclosure, a computer-readable storage medium is also provided, on which a computer program is stored, which, when executed by a processor, implements the continuous conditional LTM method described in any of the preceding claims.

[0040] According to another aspect of this disclosure, a computer program product is also provided, including a computer program that, when executed by a processor, implements the continuous conditional LTM method of any of the above.

[0041] Details of one or more embodiments of this application are set forth in the following drawings and description. Other features, objects, and advantages of this application will become apparent from the specification, drawings, and claims. Attached Figure Description

[0042] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure. It is obvious that the drawings described below are merely some embodiments of this disclosure, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort.

[0043] Figure 1 shows a schematic diagram of a system structure for a continuous conditional LTM according to an embodiment of the present disclosure;

[0044] Figure 2 shows a flowchart of a continuous conditional LTM method according to an embodiment of the present disclosure;

[0045] Figure 3 shows a flowchart of receiving signaling in a continuous conditional LTM method according to an embodiment of the present disclosure;

[0046] Figure 4 shows a flowchart of performing conditional LTM or switching conditional LTM in a method of continuous conditional LTM according to an embodiment of the present disclosure;

[0047] Figure 5 shows a flowchart of evaluating whether the LTM execution conditions are met in a continuous conditional LTM method according to an embodiment of the present disclosure;

[0048] Figure 6 shows a flowchart of the continuous conditional LTM switching process in an embodiment of the present disclosure;

[0049] Figure 7 illustrates a flowchart of starting a new uplink transmission in a continuous conditional LTM method according to an embodiment of the present disclosure;

[0050] Figure 8 shows a schematic diagram of a continuous condition LTM apparatus according to an embodiment of the present disclosure;

[0051] Figure 9 shows a structural block diagram of a computer device according to an embodiment of the present disclosure. Detailed Implementation

[0052] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the examples set forth herein; rather, they are provided so that this disclosure will be more comprehensive and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art. The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

[0053] Furthermore, the accompanying drawings are merely illustrative of this disclosure and are not necessarily drawn to scale. The same reference numerals in the drawings denote the same or similar parts, and therefore repeated descriptions of them will be omitted. Some block diagrams shown in the drawings are functional entities and do not necessarily correspond to physically or logically independent entities. These functional entities may be implemented in software, in one or more hardware modules or integrated circuits, or in different network and / or processor devices and / or microcontroller devices.

[0054] To facilitate understanding, before introducing the embodiments of this disclosure, the following explanations are provided for several terms involved in the embodiments of this disclosure:

[0055] LTM: Layer 1 / 2 Trigger Mobility, a mobility enhancement technique in R18, triggered by Layer 1 measurement, triggered by MAC CE, and a beam-level switching.

[0056] Subsequent LTM: After completing one LTM cycle, the next LTM cycle is executed, and the LTM configuration remains unchanged.

[0057] CHO: Conditional Handover, a mobility enhancement technology in R16;

[0058] CPA / C: Conditional PSCell Addition / Change, a mobility enhancement technique in Release 16;

[0059] LTM-Config: LTM configuration;

[0060] LTM-Candidate: LTM candidate configuration;

[0061] LTM-CSI-ReportConfig: LTM's CSI report configuration;

[0062] LTM-CSI-ResourceConfig: CSI resource configuration for LTM;

[0063] RRC: Radio Resource Control;

[0064] SSB: Synchronization Signal and PBCH block;

[0065] CSI-RS: Channel State Information-Reference Signal.

[0066] The specific implementation methods of the embodiments of this disclosure will now be described in detail with reference to the accompanying drawings.

[0067] As shown in Figure 1, the system architecture includes terminal device 101, network 102, and network-side device 103; when the terminal sends RRC information indicating that the LTM condition has been completed, it is ready to start a new uplink transmission in the first time.

[0068] Network 102 is a medium used to provide a communication link between terminal device 101 and network-side device 103, and can be a wired network or a wireless network.

[0069] Optionally, the aforementioned wireless or wired networks use standard communication technologies and / or protocols. The network is typically the Internet, but can also be any network, including but not limited to Local Area Networks (LANs), Metropolitan Area Networks (MANs), Wide Area Networks (WANs), mobile, wired or wireless networks, private networks, or any combination of virtual private networks. In some embodiments, technologies and / or formats including Hyper Text Markup Language (HTML), Extensible Markup Language (XML), etc., are used to represent data exchanged over the network. Furthermore, conventional encryption technologies such as Secure Socket Layer (SSL), Transport Layer Security (TLS), Virtual Private Networks (VPNs), and Internet Protocol Security (IPSec) can be used to encrypt all or some links. In other embodiments, custom and / or dedicated data communication technologies can be used to replace or supplement the aforementioned data communication technologies.

[0070] Optionally, the terminal device in this embodiment may also be referred to as UE (User Equipment). In specific implementation, the terminal device may be a mobile phone, tablet personal computer, laptop computer, personal digital assistant (PDA), mobile internet device (MID), wearable device, or vehicle-mounted device, etc. It should be noted that the specific type of terminal device is not limited in the embodiments of the present invention.

[0071] Network-side equipment can be base stations, relays, or access points, etc. Base stations can be 5G and later versions of base stations (e.g., 5G NR NB), or base stations in other communication systems (e.g., eNB base stations). It should be noted that the specific type of network-side equipment is not limited in the embodiments disclosed herein.

[0072] Those skilled in the art will understand that the number of terminals, networks, and network-side devices shown in Figure 1 is merely illustrative, and any number of terminals, networks, and network-side devices can be included according to actual needs. This disclosure does not limit this number.

[0073] Figure 2 shows a flowchart of a continuous conditional LTM method according to an embodiment of the present disclosure. As shown in Figure 2, the continuous conditional LTM method provided in this embodiment of the present disclosure includes the following steps:

[0074] S202, when the terminal sends RRC information indicating that the LTM condition has been completed, it prepares to start a new uplink transmission as soon as possible.

[0075] In a specific example, after completing the first / previous conditional LTM, the terminal sends uplink information on the target cell within the first time (i.e., performs the first uplink information transmission). That is, after completing the first / previous conditional LTM, the terminal performs continuous conditional LTM and sends uplink information on the new target cell within the first time.

[0076] For example, after performing the initial conditional LTM, the terminal may need to continue handover to another cell. If the terminal does not receive new RRC signaling to update the conditional LTM indication, it will still execute the process according to the configuration and triggering conditions in the previously received RRC signaling. Similar to the previous process, when the terminal detects that the triggering conditions are met, it performs LTM, hands over to the new target cell, and sends uplink information on the target cell. These steps need to be completed within the specified timeframe.

[0077] This application limits the time for subsequent conditional LTM handovers after the terminal completes the initial conditional LTM handover, thus solving the problem of long interruption time when the terminal frequently switches.

[0078] In one instance of this disclosure, the first time includes at least one of the following: a second time, a third time, a fourth time, a fifth time, or a sixth time.

[0079] This application breaks down the process into several steps for parallel processing, thereby shortening the overall operation time and solving the problem of long interruption time when the terminal switches frequently.

[0080] In one instance of this disclosure, the second time is time uncertainty.

[0081] For example, the aforementioned uncertainty arises from the inability to determine when the measurement conditions will be met, because the specific required value cannot be determined for that portion of the time. Therefore, this uncertainty needs to be introduced.

[0082] In one instance of this disclosure, the second time is the period from when the terminal sends the RRCReconfigurationComplete message to when a condition that can trigger conditional LTM exists at the measurement reference point.

[0083] In one instance of this disclosure, the terminal sending RRCReconfigurationComplete is the starting point for the first time.

[0084] For example, after the terminal completes the first / last conditional LTM, it will send an RRCReconfigurationComplete signaling message to the network. From this moment on, we consider that we have entered the next conditional LTM and start calculating the time.

[0085] In one example of this disclosure, the third time is the measurement time.

[0086] In one instance of this disclosure, the third time is the period from the end of the second time to the terminal performing LTM or handover to the target cell and the start of the fourth time.

[0087] For example, the third time mentioned above is the period from the point where the conditions for triggering LTM exist to the moment before the interrupt begins. In one instance of this disclosure, the fourth time is the interrupt time.

[0088] In one example of this disclosure, the fourth time is the period from when the terminal begins executing the conditional LTM to the target cell to when the terminal begins sending the first uplink transmission to the target cell.

[0089] In one embodiment of this disclosure, the fourth time includes at least one of a first sub-time, a second sub-time, a third sub-time, or a fourth sub-time; wherein, the first sub-time is the terminal processing time, including the application of target cell parameters and / or changes to L1 or L2; the second sub-time is the time for fine-tuning time tracking and acquiring all timing information of the target cell; the third sub-time is the time for SSB processing; and the fourth sub-time is the uncertainty of interruption or the uncertainty of sending the first uplink transmission.

[0090] For example, the fourth time mentioned above is the interruption time, which is the process of the terminal device disconnecting from the current serving cell and establishing a connection with the target cell. During this time, the terminal cannot transmit data.

[0091] In one instance of this disclosure, the fifth time is the terminal execution preparation time for conditional LTM.

[0092] In one instance of this disclosure, the fifth time begins when the terminal becomes aware that the conditions of the conditional LTM have been met and / or the identifier or ID of the target cell has been determined.

[0093] In one instance of this disclosure, the fifth time is shortened under preset conditions;

[0094] The preset conditions include:

[0095] The terminal did not accept the new RRC information containing the conditional LTM indication;

[0096] Each time the terminal performs Conditional LTM, it stores the target cell information acquired or processed during the execution preparation time;

[0097] If the target cell for this conditional LTM handover is the same target cell that was previously executed under conditional LTM, the stored information is applied directly.

[0098] In one instance of this disclosure, the fifth time indicates that the stored target cell information becomes invalid when the terminal receives new RRC information containing a conditional LTM indication.

[0099] For example, unlike the first execution of conditional LTM, the target cell for subsequent executions of conditional LTM may be a cell that has been previously selected as the target cell. Therefore, the RRC configuration of these cells may be known to the terminal, and the aforementioned fifth time can be shortened. There is no need to decode ASN.1 and determine its validity in order to obtain the corresponding RRC configuration.

[0100] When a terminal receives a new RRC signaling message containing a conditional LTM indication, the candidate cell range and configuration of LTM may change, rendering previous records invalid. Therefore, the aforementioned fifth time reduction only applies when the terminal has not received a new RRC signaling message containing a conditional LTM indication.

[0101] In one example of this disclosure, the sixth time is the conditional LTM preprocessing time.

[0102] In one example of this disclosure, the sixth time includes the fifth sub-time and / or the sixth sub-time. The fifth sub-time is the TCI state activation time of the candidate cell or the target cell. During the fifth sub-time, the terminal completes the pre-activation of the TCI state of the candidate cell or the target cell. The sixth sub-time is the uplink pre-synchronization time. During the sixth sub-time, the terminal completes uplink synchronization with the candidate cell or the target cell.

[0103] For example, the sixth time mentioned above is the time for some configuration preparation before executing LTM. Regarding TCI state activation, in traditional L3 handover, the TCI state of the target cell is activated only after the terminal establishes a connection with the target cell. Because LTM handover is beam-based, it needs to be activated in advance. For uplink pre-synchronization, this step is not mandatory. If uplink synchronization is completed here, subsequent handovers will be RACH-less; if uplink synchronization is not performed here, subsequent handovers will be RACH-based.

[0104] In one embodiment of this disclosure, as shown in FIG3, the target detection method provided in this embodiment further includes the following steps before the terminal sends RRC information indicating that the conditional LTM has been completed, so that the terminal knows the required configuration information in advance, and can respond to network changes more quickly and reduce interruption latency during handover:

[0105] S302, receive signaling sent from the network;

[0106] The signaling is RRC signaling, used to indicate conditional LTM and / or continuous conditional LTM, and the signaling contains the configuration of conditional LTM and / or continuous conditional LTM.

[0107] In one instance of this disclosure, the configuration of conditional LTM and / or continuous conditional LTM includes any one or more of the following:

[0108] Configuration of LTM candidate cells;

[0109] LTM execution conditions.

[0110] In one example of this disclosure, the configuration of LTM candidate cells includes any one or more of the following:

[0111] LTM configuration: LTM-Config;

[0112] LTM candidate configuration LTM-Candidate;

[0113] LTM's CSI report configuration is LTM-CSI-ReportConfig;

[0114] LTM's CSI resource configuration is LTM-CSI-ResourceConfig;

[0115] Random access preamble for LTM candidate cells.

[0116] In one embodiment of this disclosure, as shown in FIG4, the target detection method provided in this embodiment can perform conditional LTM or conditional LTM switching through the following steps. By defining multiple trigger conditions, the response speed can be improved and the flexibility enhanced:

[0117] S402, when one or more LTM execution conditions are met, the execution condition LTM or condition LTM is switched, wherein the LTM execution conditions include one or more trigger conditions.

[0118] In one embodiment of this disclosure, the triggering condition includes any one or more of the following:

[0119] The service quality of the service cell or the current cell is lower than the first threshold.

[0120] The service quality of the neighboring cell, candidate cell, or target cell is higher than the service quality of the serving cell, current cell, PCell, or PSCell by the first bias number.

[0121] The service quality of the serving cell, current cell, PCell, or PSCell is lower than the second threshold, while the service quality of the neighboring cell, SCell, candidate cell, or target cell is higher than the third threshold.

[0122] This application enables LTM execution to no longer wait for network instructions, thereby speeding up the handover process, shortening the handover time, seizing the best handover opportunity, and improving the handover success rate.

[0123] In one embodiment of this disclosure, as shown in FIG5, the target detection method provided in this embodiment can evaluate LTM execution conditions through the following steps. By measuring information at different dimensions, it is possible to accurately assess whether the LTM execution conditions are met:

[0124] S502, Evaluate whether the LTM execution conditions are met, wherein evaluating the LTM execution conditions includes: performing L1 and / or L3 measurements on the serving cell and / or LTM candidate cells.

[0125] In one embodiment of this disclosure, the evaluation reference signal for LTM execution conditions includes a synchronization signal block (SSB) and / or channel state information reference information (CSI-RS).

[0126] The measured values ​​of the evaluation reference signal include any one or more of the following:

[0127] Reference signal received power RSRP;

[0128] Reference signal reception quality (RSRQ);

[0129] Signal-to-noise ratio (SINR).

[0130] In one embodiment of this disclosure, the evaluation reference signal for the LTM execution condition is the measurement object of L1 and / or L3 measurement; the judgment object in the trigger condition is the L1 and / or L3 measurement result of the evaluation reference signal measurement value in the serving cell, current cell, PCell, PSCell, neighboring cell, SCell, candidate cell, or target cell.

[0131] In one embodiment of this disclosure, performing conditional LTM or switching conditional LTM includes any one or more of the following:

[0132] Disconnected from the service area;

[0133] Switch to the target cell;

[0134] Configure the target cell for the application;

[0135] Among them, the target cell is either one of the candidate cells or the target cell of the previous conditional LTM.

[0136] In one embodiment of this disclosure, the terminal sending RRC information indicating that the condition LTM has been completed includes: the terminal sending RRCReconfigurationComplete to the network.

[0137] In one embodiment of this disclosure, as shown in FIG6, the target detection method provided in this embodiment can perform continuous conditional LTM switching through the following steps, which can ensure that switching is performed rapidly when the conditions are met:

[0138] S602, continue to monitor whether the triggering condition in the LTM execution condition of the conditional LTM configuration in the RRC signaling is met;

[0139] S604, when one or more LTM execution conditions are met, perform continuous conditional LTM switching;

[0140] S606, after the terminal receives new RRC information containing a conditional LTM indication, it will no longer perform continuous conditional LTM handover based on the previous conditional LTM indication.

[0141] In one embodiment of this disclosure, as shown in FIG7, the target detection method provided in this embodiment includes the following steps to start a new uplink transmission, enabling the terminal to quickly respond to changes in network conditions, rapidly switch to the target cell, and reduce handover latency:

[0142] S702, the terminal performs conditional LTM or conditional LTM handover to the target cell;

[0143] S704, the handover is considered complete when the terminal switches to the target cell and sends the first uplink transmission to the target cell.

[0144] In one example of this disclosure, the continuous conditional LTM method further includes: if the terminal fails to complete uplink synchronization with the candidate cell or target cell within the sixth sub-time of the sixth time period, the first uplink transmission during continuous conditional LTM handover is the PRACH sent by the terminal; if the terminal completes uplink synchronization with the candidate cell or target cell within the sixth sub-time of the sixth time period, the first uplink transmission during conditional LTM handover is uplink data or uplink signaling. In summary, it can be understood that the first uplink transmission is the transmission of the first uplink information. Sending the first uplink transmission to the target cell is considered a handover completion; that is, transmitting the first uplink information to the target cell is considered a handover completion.

[0145] This application addresses the issue of delayed handover and reduced handover success rate in certain scenarios (e.g., rapid terminal movement or rapid changes in the wireless environment) caused by continuous condition-triggered LTM in 3GPP R18, thereby increasing system robustness. By limiting the handover time, it further enhances the advantage of fast LTM handover speed and is applicable to scenarios with frequent continuous condition-triggered LTM, reducing interruption time caused by rapid terminal movement and frequent handovers, thus improving user experience.

[0146] Based on the same inventive concept, this disclosure also provides an apparatus for continuous conditional LTM, as described in the following embodiments. Since the principle by which this apparatus solves the problem is similar to that of the method embodiments described above, the implementation of this apparatus embodiment can refer to the implementation of the method embodiments described above, and repeated details will not be repeated.

[0147] Figure 8 shows a schematic diagram of a continuous conditional LTM device according to an embodiment of the present disclosure. As shown in Figure 8, the device includes: a continuous conditional LTM module 81, a signaling receiving module 82, an execution conditional LTM or conditional LTM switching module 83, and an evaluation conditional LTM execution condition module 84.

[0148] Among them, the continuous condition LTM module 81 is used to prepare to start a new uplink transmission as soon as possible when the terminal sends RRC information indicating that the condition LTM has been completed.

[0149] In one example of this disclosure, the first time in the aforementioned continuous conditional LTM module 81 includes at least one of a second time, a third time, a fourth time, a fifth time, or a sixth time.

[0150] In one example of this disclosure, the second time in the aforementioned continuous conditional LTM module 81 is a time uncertainty.

[0151] In one example of this disclosure, the second time in the aforementioned continuous conditional LTM module 81 is the time period from when the terminal sends the RRCReconfigurationComplete message to when a condition that can trigger conditional LTM exists at the measurement reference point.

[0152] In one example of this disclosure, the terminal in the aforementioned continuous conditional LTM module 81 sends RRCReconfigurationComplete as the starting point of the first time.

[0153] In one example of this disclosure, the third time in the aforementioned continuous condition LTM module 81 is the measurement time.

[0154] In one example of this disclosure, the third time in the aforementioned continuous conditional LTM module 81 is the period from the end of the second time to the terminal performing LTM or handover to the target cell and the start of the fourth time.

[0155] In one example of this disclosure, the fourth time in the aforementioned continuous condition LTM module 81 is the interrupt time.

[0156] In one example of this disclosure, the fourth time in the aforementioned continuous conditional LTM module 81 is the time period from when the terminal begins to execute the conditional LTM to the target cell to when the terminal begins to send the first uplink transmission to the target cell.

[0157] In one embodiment of this disclosure, the fourth time in the aforementioned continuous conditional LTM module 81 includes at least one of a first sub-time, a second sub-time, a third sub-time, or a fourth sub-time; wherein, the first sub-time is the terminal processing time, including the application of target cell parameters and / or changes to L1 or L2; the second sub-time is the time for fine time tracking and acquiring all timing information of the target cell, etc.; the third sub-time is the time for SSB processing; and the fourth sub-time is the uncertainty of interruption or the uncertainty of sending the first uplink transmission.

[0158] In one example of this disclosure, the fifth time in the aforementioned continuous conditional LTM module 81 is the terminal execution preparation time for conditional LTM.

[0159] In one example of this disclosure, the fifth time in the aforementioned continuous conditional LTM module 81 begins when the terminal becomes aware that the conditional LTM condition has been met and / or the identifier or ID of the target cell has been determined.

[0160] In one example of this disclosure, the fifth time in the aforementioned continuous conditional LTM module 81 is shortened under preset conditions;

[0161] The preset conditions include:

[0162] The terminal did not accept the new RRC information containing the conditional LTM indication;

[0163] Each time the terminal performs Conditional LTM, it stores the target cell information acquired or processed during the execution preparation time;

[0164] If the target cell for this conditional LTM handover is the same target cell that was previously executed under conditional LTM, the stored information is applied directly.

[0165] In one example of this disclosure, the fifth time characterization in the aforementioned continuous conditional LTM module 81 indicates that the stored target cell information becomes invalid when the terminal receives new RRC information containing conditional LTM indication.

[0166] In one example of this disclosure, the sixth time in the aforementioned continuous conditional LTM module 81 is the conditional LTM preprocessing time.

[0167] In one example of this disclosure, the sixth time in the aforementioned continuous conditional LTM module 81 includes the fifth time and / or the sixth time. The fifth time is the TCI state activation time of the candidate cell or the target cell. During the fifth time, the terminal completes the pre-activation of the TCI state of the candidate cell or the target cell. The sixth time is the uplink pre-synchronization time. During the sixth time, the terminal completes uplink synchronization with the candidate cell or the target cell.

[0168] In one embodiment of this disclosure, the apparatus for continuous conditional LTM further includes a signaling receiving module 82 for receiving signaling sent from the network;

[0169] The signaling is RRC signaling, used to indicate conditional LTM and / or continuous conditional LTM, and the signaling contains the configuration of conditional LTM and / or continuous conditional LTM.

[0170] In one example of this disclosure, the configuration of conditional LTM and / or continuous conditional LTM in the aforementioned receive signaling module 82 includes any one or more of the following:

[0171] Configuration of LTM candidate cells;

[0172] LTM execution conditions.

[0173] In one example of this disclosure, the configuration of the LTM candidate cell in the aforementioned receiving signaling module 82 includes any one or more of the following:

[0174] LTM configuration: LTM-Config;

[0175] LTM candidate configuration LTM-Candidate;

[0176] LTM's CSI report configuration is LTM-CSI-ReportConfig;

[0177] LTM's CSI resource configuration is LTM-CSI-ResourceConfig;

[0178] Random access preamble for LTM candidate cells.

[0179] In one embodiment of this disclosure, the aforementioned continuous condition LTM apparatus further includes an execution condition LTM or condition LTM switching module 83, used to execute condition LTM or switch condition LTM when one or more LTM execution conditions are met, wherein the LTM execution conditions include one or more trigger conditions.

[0180] In one example of this disclosure, the triggering conditions in the aforementioned execution conditional LTM or conditional LTM switching module 83 include any one or more of the following:

[0181] The service quality of the service cell or the current cell is lower than the first threshold.

[0182] The service quality of the neighboring cell, candidate cell, or target cell is higher than the service quality of the serving cell, current cell, PCell, or PSCell by the first bias number.

[0183] The service quality of the serving cell, current cell, PCell, or PSCell is lower than the second threshold, while the service quality of the neighboring cell, SCell, candidate cell, or target cell is higher than the third threshold.

[0184] In one embodiment of this disclosure, the apparatus for continuous conditional LTM further includes an evaluation conditional LTM execution condition module 84 for evaluating whether the LTM execution conditions are met, wherein evaluating the LTM execution conditions includes performing L1 and / or L3 measurements on the serving cell and / or LTM candidate cells.

[0185] In one example of this disclosure, the evaluation reference signals for the LTM execution conditions in the LTM execution condition module 84 mentioned above include the Synchronization Signal Block (SSB) and / or Channel State Information Reference Information (CSI-RS).

[0186] The measured values ​​of the evaluation reference signal include any one or more of the following:

[0187] Reference signal received power RSRP;

[0188] Reference signal reception quality (RSRQ);

[0189] Signal-to-noise ratio (SINR).

[0190] In one example of this disclosure, the evaluation reference signal of the LTM execution condition in the LTM execution condition module 84 is the measurement object of L1 and / or L3 measurement; the judgment object in the trigger condition is the L1 and / or L3 measurement result of the evaluation reference signal in the serving cell or current cell or PCell or PSCell or neighboring cell or SCell or candidate cell or target cell.

[0191] In one example of this disclosure, the execution of conditional LTM or conditional LTM switching in the above-mentioned execution conditional LTM or conditional LTM switching module 83 includes any one or more of the following:

[0192] Disconnected from the service area;

[0193] Switch to the target cell;

[0194] Configure the target cell for the application;

[0195] Among them, the target cell is either one of the candidate cells or the target cell of the previous conditional LTM.

[0196] In one example of this disclosure, the aforementioned continuous conditional LTM module 81 is further configured to have the terminal send RRCReconfigurationComplete to the network.

[0197] In one example of this disclosure, the aforementioned conditional LTM or conditional LTM switching module 83 is further configured to: continue monitoring whether the trigger condition in the LTM execution condition of the conditional LTM configuration in the RRC signaling is met; when one or more LTM execution conditions are met, perform continuous conditional LTM switching; after the terminal receives new RRC information containing conditional LTM indication, it no longer performs continuous conditional LTM switching based on the previous conditional LTM indication.

[0198] In one example of this disclosure, the aforementioned continuous conditional LTM module 81 is further configured to: enable the terminal to perform conditional LTM or conditional LTM handover to the target cell; and consider the handover complete when the terminal sends the first uplink transmission to the target cell after handover.

[0199] In one embodiment of this disclosure, the aforementioned continuous conditional LTM module 81 is further configured such that, if the terminal fails to complete uplink synchronization with the candidate cell or the target cell within the sixth sub-time of the sixth time period, the first uplink transmission when the terminal performs continuous conditional LTM handover is the PRACH sent by the terminal; if the terminal completes uplink synchronization with the candidate cell or the target cell within the sixth sub-time of the sixth time period, the first uplink transmission when the terminal performs conditional LTM or conditional LTM handover is uplink data or uplink signaling.

[0200] It should be noted that the aforementioned continuous conditional LTM module 81 corresponds to S202 in the method embodiment. The examples and application scenarios implemented by this module and its corresponding steps are the same, but it is not limited to the content disclosed in the above method embodiment. It should also be noted that this module, as part of an apparatus, can be executed in a computer system such as a set of computer-executable instructions.

[0201] Those skilled in the art will understand that various aspects of this disclosure can be implemented as a system, method, or program product. Therefore, various aspects of this disclosure can be specifically implemented in the following forms: a completely hardware implementation, a completely software implementation (including firmware, microcode, etc.), or a combination of hardware and software aspects, collectively referred to herein as a "circuit," "module," or "system."

[0202] The electronic device 900 according to this embodiment of the present disclosure will now be described with reference to FIG9. The electronic device 900 shown in FIG9 is merely an example and should not be construed as limiting the functionality and scope of the embodiments of the present disclosure.

[0203] As shown in Figure 9, the electronic device 900 is presented in the form of a general-purpose computing device. The components of the electronic device 900 may include, but are not limited to: at least one processing unit 910, at least one storage unit 920, and a bus 930 connecting different system components (including the storage unit 920 and the processing unit 910).

[0204] The storage unit stores program code that can be executed by the processing unit 910, causing the processing unit 910 to perform the steps described in the "Exemplary Methods" section above according to various exemplary embodiments of this disclosure.

[0205] For example, the processing unit 910 can execute the following steps in the above method embodiment: when the terminal sends RRC information indicating that the condition LTM has been completed, it prepares to start a new uplink transmission within a first time.

[0206] For example, the first time in the steps of the above method embodiment executed by the processing unit 910 includes at least one of the following: a second time, a third time, a fourth time, a fifth time, or a sixth time.

[0207] For example, in the steps of the above method embodiment, the second time is a time uncertainty.

[0208] For example, in the steps of the above method embodiment, the second time is the time period from when the terminal sends the RRCReconfigurationComplete message to when the condition that can trigger conditional LTM exists at the measurement reference point.

[0209] For example, in the steps of the above method embodiment, the terminal sending RRCReconfigurationComplete is the starting point of the first time.

[0210] For example, in the steps of the above method embodiment, the third time is the measurement time.

[0211] For example, in the steps of the above method embodiment, the third time is the period from the end of the second time to the terminal performing LTM or handover to the target cell and the start of the fourth time.

[0212] For example, the fourth time in the steps of the above method embodiment executed by the processing unit 910 is an interruption time.

[0213] For example, in the steps of the above method embodiment, the fourth time is the time period from when the terminal starts executing the conditional LTM to the target cell to when the terminal starts sending the first uplink transmission to the target cell.

[0214] For example, in the steps of the above method embodiment, the fourth time includes at least one of the first sub-time, the second sub-time, the third sub-time, or the fourth sub-time;

[0215] The first sub-time is the terminal processing time, which includes changes to the target cell parameters and / or L1 or L2.

[0216] The second sub-time is the time for fine-grained time tracking and acquiring all timing information of the target cell;

[0217] The third sub-time is the time for SSB processing;

[0218] The fourth sub-time represents the uncertainty of interruption or the uncertainty of sending the first uplink transmission.

[0219] For example, the fifth time in the step of the above method embodiment executed by the processing unit 910 is the terminal execution preparation time of conditional LTM.

[0220] For example, the fifth time in the steps of the above method embodiment executed by the processing unit 910 begins when the terminal realizes that the condition of conditional LTM is met and / or the identifier or ID of the target cell is determined.

[0221] For example, the fifth time in the process unit 910 performing the above method embodiment is shortened under preset conditions;

[0222] The preset conditions include:

[0223] The terminal did not accept the new RRC information containing the conditional LTM indication;

[0224] Each time the terminal performs Conditional LTM, it stores the target cell information acquired or processed during the execution preparation time;

[0225] If the target cell for this conditional LTM handover is the same target cell that was previously executed under conditional LTM, the stored information is applied directly.

[0226] For example, in the fifth time step of the above method embodiment, the processing unit 910 indicates that when the terminal receives new RRC information containing conditional LTM indication, the information of the target cell that has been stored has become invalid.

[0227] For example, the sixth time in the step of the above method embodiment executed by the processing unit 910 is the conditional LTM preprocessing time.

[0228] For example, the sixth time in the steps of the above method embodiment executed by the processing unit 910 includes the fifth sub-time and / or the sixth sub-time. The fifth sub-time is the TCI state activation time of the candidate cell or the target cell. During the fifth sub-time, the terminal completes the pre-activation of the TCI state of the candidate cell or the target cell. The sixth sub-time is the uplink pre-synchronization time. During the sixth sub-time, the terminal completes uplink synchronization with the candidate cell or the target cell.

[0229] For example, the processing unit 910 can perform the following steps in the above method embodiment:

[0230] Receive signaling sent from the network;

[0231] The signaling is RRC signaling, used to indicate conditional LTM and / or continuous conditional LTM, and the signaling contains the configuration of conditional LTM and / or continuous conditional LTM.

[0232] For example, the configuration of conditional LTM and / or continuous conditional LTM in the steps of the above method embodiments executed by the processing unit 910 includes any one or more of the following:

[0233] Configuration of LTM candidate cells;

[0234] LTM execution conditions.

[0235] For example, the configuration of LTM candidate cells in the steps of the above method embodiment performed by the processing unit 910 includes any one or more of the following:

[0236] LTM configuration: LTM-Config;

[0237] LTM candidate configuration LTM-Candidate;

[0238] LTM's CSI report configuration is LTM-CSI-ReportConfig;

[0239] LTM's CSI resource configuration is LTM-CSI-ResourceConfig;

[0240] Random access preamble for LTM candidate cells.

[0241] For example, the processing unit 910 can perform the following steps in the above method embodiment: when one or more LTM execution conditions are met, the execution condition LTM or condition LTM is switched, wherein the LTM execution conditions include one or more trigger conditions.

[0242] For example, the triggering conditions in the steps of the above method embodiment executed by the processing unit 910 include any one or more of the following:

[0243] The service quality of the service cell or the current cell is lower than the first threshold.

[0244] The service quality of the neighboring cell, candidate cell, or target cell is higher than the service quality of the serving cell, current cell, PCell, or PSCell by the first bias number.

[0245] The service quality of the serving cell, current cell, PCell, or PSCell is lower than the second threshold, while the service quality of the neighboring cell, SCell, candidate cell, or target cell is higher than the third threshold.

[0246] For example, the processing unit 910 can perform the following steps in the above method embodiment:

[0247] The assessment of whether the LTM execution conditions are met includes: performing L1 and / or L3 measurements on the serving cell and / or LTM candidate cells.

[0248] For example, the evaluation reference signal for the LTM execution condition in the steps of the above method embodiment executed by the processing unit 910 includes the synchronization signal block SSB and / or channel state information reference information CSI-RS;

[0249] The measured values ​​of the evaluation reference signal include any one or more of the following:

[0250] Reference signal received power RSRP;

[0251] Reference signal reception quality (RSRQ);

[0252] Signal-to-noise ratio (SINR).

[0253] For example, the processing unit 910 can perform the following steps in the above method embodiment:

[0254] The evaluation reference signal for LTM execution conditions is the measurement object measured by L1 and / or L3.

[0255] The judgment object in the triggering condition is the L1 and / or L3 measurement results of the measurement value of the reference signal in the serving cell, current cell, PCell, PSCell, neighboring cell, SCell, candidate cell, or target cell.

[0256] For example, the execution of conditional LTM or conditional LTM switching in the steps of the above method embodiments by the processing unit 910 includes any one or more of the following:

[0257] Disconnected from the service area;

[0258] Switch to the target cell;

[0259] Configure the target cell for the application;

[0260] Among them, the target cell is either one of the candidate cells or the target cell of the previous conditional LTM.

[0261] For example, the processing unit 910 can perform the following steps in the above method embodiment: the terminal sends RRCReconfigurationComplete to the network.

[0262] For example, the processing unit 910 may execute the following steps in the above method embodiment: continue to monitor whether the trigger condition in the LTM execution condition of the conditional LTM configuration in the RRC signaling is met;

[0263] When one or more LTM execution conditions are met, the continuous conditional LTM switch is executed.

[0264] After receiving new RRC information containing a conditional LTM indication, the terminal will no longer perform continuous conditional LTM handover based on the previous conditional LTM indication.

[0265] For example, the processing unit 910 can execute the following steps in the above method embodiment: the terminal performs conditional LTM or conditional LTM handover and switches to the target cell;

[0266] The handover is considered complete when the terminal switches to the target cell and sends the first uplink transmission to the target cell.

[0267] For example, in the steps of the above method embodiment executed by the processing unit 910

[0268] If the terminal fails to complete uplink synchronization with the candidate cell or the target cell within the sixth sub-time of the sixth time period, the first uplink transmission when the terminal performs continuous conditional LTM handover is the PRACH sent by the terminal.

[0269] If the terminal completes uplink synchronization with the candidate cell or the target cell within the sixth sub-time of the sixth time period, the first uplink transmission when the terminal performs conditional LTM or conditional LTM handover will be uplink data or uplink signaling.

[0270] Storage unit 920 may include readable media in the form of volatile storage units, such as random access memory (RAM) 9201 and / or cache memory 9202, and may further include read-only memory (ROM) 9203.

[0271] Storage unit 920 may also include a program / utility 9204 having a set (at least one) program module 9205, such program module 9205 including but not limited to: operating system, one or more application programs, other program modules and program data, each or some combination of these examples may include an implementation of a network environment.

[0272] Bus 930 can represent one or more of several types of bus structures, including a memory cell bus or memory cell controller, a peripheral bus, a graphics acceleration port, a processing unit, or a local bus using any of the various bus structures.

[0273] Electronic device 900 can also communicate with one or more external devices 940 (e.g., keyboard, pointing device, Bluetooth device, etc.), and with one or more devices that enable a user to interact with electronic device 900, and / or with any device that enables electronic device 900 to communicate with one or more other computing devices (e.g., router, modem, etc.). This communication can be performed via input / output (I / O) interface 950. Furthermore, electronic device 900 can also communicate with one or more networks (e.g., local area network (LAN), wide area network (WAN), and / or public networks, such as the Internet) via network adapter 960. As shown, network adapter 960 communicates with other modules of electronic device 900 via bus 930. It should be understood that, although not shown in the figures, other hardware and / or software modules can be used in conjunction with electronic device 900, including but not limited to: microcode, device drivers, redundant processing units, external disk drive arrays, RAID systems, tape drives, and data backup storage systems.

[0274] From the above description of the embodiments, those skilled in the art will readily understand that the exemplary embodiments described herein can be implemented by software or by combining software with necessary hardware. Therefore, the technical solutions according to the embodiments of this disclosure can be embodied in the form of a software product, which can be stored in a non-volatile storage medium (such as a CD-ROM, USB flash drive, external hard drive, etc.) or on a network, including several instructions to cause a computing device (such as a personal computer, server, terminal device, or network device, etc.) to execute the methods according to the embodiments of this disclosure.

[0275] In particular, according to embodiments of this disclosure, the process described above with reference to the flowchart can be implemented as a computer program product, which includes a computer program that, when executed by a processor, implements the above-described continuous conditional LTM method.

[0276] In exemplary embodiments of this disclosure, a computer-readable storage medium is also provided, which may be a readable signal medium or a readable storage medium. A program product capable of implementing the methods described above is stored thereon. In some possible implementations, various aspects of this disclosure may also be implemented as a program product including program code, which, when run on a terminal device, causes the terminal device to perform the steps described in the "Exemplary Methods" section of this specification according to various exemplary embodiments of this disclosure.

[0277] More specific examples of computer-readable storage media in this disclosure may include, but are not limited to: electrical connections having one or more wires, portable computer disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fiber, portable compact disk read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination of the foregoing.

[0278] In this disclosure, a computer-readable storage medium may include a data signal propagated in baseband or as part of a carrier wave, carrying readable program code. Such propagated data signals may take various forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination thereof. A readable signal medium may also be any readable medium other than a readable storage medium, capable of transmitting, propagating, or transmitting a program for use by or in connection with an instruction execution system, apparatus, or device.

[0279] Optionally, the program code contained on the computer-readable storage medium may be transmitted using any suitable medium, including but not limited to wireless, wired, optical fiber, RF, etc., or any suitable combination thereof.

[0280] In practical implementation, program code for performing the operations of this disclosure can be written in any combination of one or more programming languages, including object-oriented programming languages ​​such as Java and C++, and conventional procedural programming languages ​​such as C or similar languages. The program code can execute entirely on the user's computing device, partially on the user's device, as a standalone software package, partially on the user's computing device and partially on a remote computing device, or entirely on a remote computing device or server. In cases involving remote computing devices, the remote computing device can be connected to the user's computing device via any type of network, including a local area network (LAN) or a wide area network (WAN), or it can be connected to an external computing device (e.g., via the Internet using an Internet service provider).

[0281] It should be noted that although several modules or units for the device used to perform actions have been mentioned in the detailed description above, this division is not mandatory. In fact, according to embodiments of this disclosure, the features and functions of two or more modules or units described above can be embodied in one module or unit. Conversely, the features and functions of one module or unit described above can be further divided and embodied by multiple modules or units.

[0282] Furthermore, although the steps of the method in this disclosure are described in a specific order in the accompanying drawings, this does not require or imply that the steps must be performed in that specific order, or that all the steps shown must be performed to achieve the desired result. Additional or alternative steps may be omitted, multiple steps may be combined into one step, and / or a step may be broken down into multiple steps.

[0283] From the above description of the embodiments, those skilled in the art will readily understand that the exemplary embodiments described herein can be implemented by software or by combining software with necessary hardware. Therefore, the technical solutions according to the embodiments of this disclosure can be embodied in the form of a software product, which can be stored in a non-volatile storage medium (such as a CD-ROM, USB flash drive, external hard drive, etc.) or on a network, including several instructions to cause a computing device (such as a personal computer, server, mobile terminal, or network device, etc.) to execute the methods according to the embodiments of this disclosure.

[0284] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This disclosure is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the appended claims.

Claims

1. A method for continuous conditional LTM, comprising: When the terminal sends RRC information indicating that the LTM condition has been completed, it is ready to start a new uplink transmission as soon as possible.

2. The method of continuous conditional LTM according to claim 1, wherein the transmission for preparing to start a new uplink transmission in the first time period includes: Prepare to begin transmitting the first uplink information within the first time interval.

3. The method for continuous conditional LTM according to claim 1, wherein the first time includes: At least one of the second, third, fourth, fifth, or sixth time periods.

4. The method of continuous conditional LTM according to claim 3, wherein the second time is a time uncertainty.

5. The method for continuous conditional LTM according to claim 3, wherein the second time is the time period from when the terminal sends the RRCReconfigurationComplete message to when a condition that can trigger conditional LTM exists at the measurement reference point.

6. The method of continuous conditional LTM according to claim 3, wherein the terminal sending RRCReconfigurationComplete is the starting point of the first time.

7. The method for continuous conditional LTM according to claim 3, wherein the third time is the measurement time.

8. The method of continuous conditional LTM according to claim 3, wherein the third time is the period from the end of the second time to the terminal performing LTM or handover to the target cell and the start of the fourth time.

9. The method of continuous conditional LTM according to claim 3, wherein the fourth time is an interruption time.

10. The method of continuous conditional LTM according to claim 3, wherein the fourth time is the time period from when the terminal starts executing conditional LTM to the target cell to when the terminal starts sending the first uplink transmission to the target cell.

11. The method of continuous conditional LTM according to claim 10, wherein the fourth time includes at least one of a first sub-time, a second sub-time, a third sub-time, or a fourth sub-time; in, The first sub-time is the terminal processing time, which includes changes to the target cell parameters and / or L1 or L2. The second sub-time is the time for fine-grained time tracking and acquiring all timing information of the target cell; The third sub-time is the time for SSB processing; The fourth sub-time is the uncertainty of interruption or the uncertainty of sending the first uplink transmission.

12. The method of continuous conditional LTM according to claim 3, wherein the fifth time is the terminal execution preparation time of the conditional LTM.

13. The method of continuous conditional LTM according to claim 3, wherein the fifth time begins when the terminal becomes aware that the condition of conditional LTM has been met and / or the identifier or ID of the target cell has been determined.

14. The method of continuous conditional LTM according to claim 3, wherein the fifth time is shortened under preset conditions; in, The preset conditions include: The terminal did not accept the new RRC information containing the conditional LTM indication; Each time the terminal performs Conditional LTM, it stores the target cell information acquired or processed during the execution preparation time; If the target cell for this conditional LTM handover is the same target cell that was previously executed under conditional LTM, the stored information is applied directly.

15. The method of continuous conditional LTM according to claim 3, wherein the fifth time characterizes the invalidation of the stored target cell information when the terminal receives new RRC information containing conditional LTM indication.

16. The method for continuous conditional LTM according to claim 3, wherein the sixth time is the conditional LTM preprocessing time.

17. The method of continuous conditional LTM according to claim 3, wherein the sixth time includes a fifth sub-time and / or a sixth sub-time, the fifth sub-time being the TCI state activation time of the candidate cell or the target cell, during which the terminal completes the pre-activation of the TCI state of the candidate cell or the target cell; the sixth sub-time being the uplink pre-synchronization time, during which the terminal completes uplink synchronization with the candidate cell or the target cell.

18. The method for continuous conditional LTM according to claim 1, wherein before the terminal sends RRC information indicating that the conditional LTM has been completed, the method further comprises: Receive signaling sent from the network; The signaling is RRC signaling, used to indicate the conditional LTM and / or continuous conditional LTM, and the signaling contains the configuration of the conditional LTM and / or continuous conditional LTM.

19. The method of continuous conditional LTM according to claim 18, wherein the configuration of the conditional LTM and / or continuous conditional LTM includes any one or more of the following: Configuration of LTM candidate cells; LTM execution conditions.

20. The method for continuous conditional LTM according to claim 19, wherein the configuration of the LTM candidate cells includes any one or more of the following: LTM configuration: LTM-Config; LTM candidate configuration LTM-Candidate; LTM's CSI report configuration is LTM-CSI-ReportConfig; LTM's CSI resource configuration is LTM-CSI-ResourceConfig; Random access preamble for LTM candidate cells.

21. The method of continuous conditional LTM according to claim 19, wherein the method further comprises: When one or more LTM execution conditions are met, the execution condition LTM or conditional LTM is switched, wherein the LTM execution conditions include one or more trigger conditions.

22. The method for continuous conditional LTM according to claim 21, wherein the triggering condition includes any one or more of the following: The service quality of the service cell or the current cell is lower than the first threshold. The service quality of the neighboring cell, candidate cell, or target cell is higher than the service quality of the serving cell, current cell, PCell, or PSCell by the first bias number. The service quality of the serving cell, current cell, PCell, or PSCell is lower than the second threshold, while the service quality of the neighboring cell, SCell, candidate cell, or target cell is higher than the third threshold.

23. The method for continuous conditional LTM according to claim 22, wherein the method further comprises: Evaluating whether the LTM execution conditions are met, wherein evaluating the LTM execution conditions includes performing L1 and / or L3 measurements on the serving cell and / or LTM candidate cells.

24. The method of continuous conditional LTM according to claim 23, wherein the evaluation reference signal for the LTM execution conditions includes a synchronization signal block (SSB) and / or channel state information reference information (CSI-RS); in, The measured values ​​of the evaluation reference signal include any one or more of the following: Reference signal received power RSRP; Reference signal reception quality (RSRQ); Signal-to-noise ratio (SINR).

25. The method of continuous conditional LTM according to claim 24, wherein the method further comprises: The evaluation reference signal for the LTM execution conditions is the measurement object measured by L1 and / or L3. The judgment object in the triggering condition is the L1 and / or L3 measurement results of the evaluation reference signal in the serving cell, current cell, PCell, PSCell, neighboring cell, SCell, candidate cell, or target cell.

26. The method of continuous conditional LTM according to claim 21, wherein performing conditional LTM or switching conditional LTM includes any one or more of the following: Disconnected from the service area; Switch to the target cell; Apply the configuration of the target cell; in, The target cell is one of the candidate cells or the target cell of the previous conditional LTM.

27. The method for continuous conditional LTM according to claim 1, wherein the terminal sending RRC information indicating that conditional LTM has been completed includes: The terminal sends RRCReconfigurationComplete to the network.

28. The method of continuous conditional LTM according to any one of claims 21 to 26, wherein the method further comprises: Continue to monitor whether the triggering condition in the LTM execution condition of the conditional LTM configuration in the RRC signaling is met; When one or more LTM execution conditions are met, the continuous conditional LTM switch is executed. After receiving new RRC information containing a conditional LTM indication, the terminal will no longer perform continuous conditional LTM handover based on the previous conditional LTM indication.

29. The method of continuous conditional LTM according to claim 1, wherein starting a new uplink transmission comprises: The terminal performs conditional LTM or conditional LTM handover to the target cell; The handover is considered complete when the terminal switches to the target cell and sends the first uplink transmission to the target cell.

30. The method of continuous conditional LTM according to claim 17, wherein the method further comprises: If the terminal fails to complete uplink synchronization with the candidate cell or the target cell within the sixth sub-time of the sixth time period, the first uplink transmission when the terminal performs continuous conditional LTM handover is the PRACH sent by the terminal. If the terminal completes uplink synchronization with the candidate cell or the target cell within the sixth sub-time of the sixth time period, the first uplink transmission when the terminal performs conditional LTM or conditional LTM handover will be uplink data or uplink signaling.

31. A continuous condition LTM device, comprising: The Continuous Conditional LTM module is used by the terminal to prepare to start a new uplink transmission as soon as possible when it sends RRC information indicating that the conditional LTM has been completed.

32. An electronic device, comprising: processor; as well as Memory for storing the executable instructions of the processor; The processor is configured to perform the method of continuous conditional LTM as described in any one of claims 1 to 30 by executing the executable instructions.

33. A computer-readable storage medium having a computer program stored thereon, wherein the computer program, when executed by a processor, implements the method of continuous conditional LTM as described in any one of claims 1 to 30.

34. A computer program product, comprising: A computer program or instructions which, when executed by a processor, implement the method of continuous conditional LTM as described in any one of claims 1 to 30.

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