Processing method, communication device and storage medium

Abstract

Provided in the present application are a processing method, a communication device and a storage medium. The processing method comprises: in response to receiving a timing advance value for at least one candidate cell, starting or restarting a timing advance timer. The technical solution of the present application improves a timing advance processing mechanism, thereby supporting RACH-less conditional LTM handover.

Description

Processing methods, communication equipment and storage media

[0001] Related applications

[0002] This application claims priority to Chinese patent application No. 202510088206.2, filed on January 20, 2025, the entire contents of which are incorporated herein by reference. Technical Field

[0003] This application relates to the field of communication technology, and in particular to a processing method, communication device and storage medium. Background Technology

[0004] Timing Advance (TA) is a key technology for uplink synchronization in cellular communication systems. The TA mechanism ensures that data sent from terminal devices at different distances can arrive at network devices synchronously, thereby avoiding inter-symbol interference and inter-subcarrier interference in the uplink.

[0005] In the process of conceiving and implementing this application, the inventors discovered at least the following problems: In the existing protocol, the time advance processing mechanism is not perfect during the conditional LTM (L1 / L2 Triggered Mobility) handover process, and therefore cannot support conditional LTM handover without random access. Therefore, it is necessary to improve the time advance processing mechanism.

[0006] The preceding description is intended to provide general background information and does not necessarily constitute prior art. Technical solutions

[0007] The main objective of this application is to provide a processing method, communication device, and storage medium, which aims to improve the time advance processing mechanism and thus support LTM handover without random access conditions.

[0008] This application provides a processing method applicable to terminal devices (such as mobile phones), comprising the following steps:

[0009] S2: In response to receiving the time advance value of at least one candidate cell, start or restart the time advance timer.

[0010] Optionally, the method further includes at least one of the following:

[0011] At least one candidate cell's timing advance value is carried in the media access control element;

[0012] At least one candidate cell includes all candidate cells;

[0013] At least one candidate cell's time advance value is not the maximum value;

[0014] The time advance timer includes the effective time advance timer.

[0015] Optionally, the method further includes at least one of the following:

[0016] Based on physical downlink control channel commands, a random access preamble is sent to at least one candidate cell;

[0017] In response to at least one candidate cell meeting the conditional LTM execution conditions, a conditional LTM cell handover is triggered.

[0018] In response to the fulfillment of the Conditional LTM execution conditions, the Radio Resource Control (RRC) layer sends a Conditional LTM cell handover request and / or candidate cell identifier to the Media Access Control (MAC) layer.

[0019] Optionally, the method further includes at least one of the following:

[0020] The time advance timer is used to determine whether to apply the time advance value of at least one candidate cell during conditional LTM cell handover.

[0021] Conditional LTM cell handover requests and / or candidate cell identifiers are used to trigger the Media Access Control layer to apply a time advance value for at least one candidate cell.

[0022] The advance timer is used for at least one candidate cell.

[0023] This application also provides a processing method applicable to network devices (such as base stations), comprising the following steps:

[0024] S1: Send the timing advance value of at least one candidate cell so that the terminal device can receive the timing advance value of at least one candidate cell and start or restart the timing advance timer.

[0025] Optionally, the method further includes at least one of the following:

[0026] At least one candidate cell's timing advance value is carried in the media access control element;

[0027] At least one candidate cell includes all candidate cells;

[0028] At least one candidate cell's advance time value is not the maximum value;

[0029] The time advance timer includes the effective time advance timer.

[0030] Optionally, the method further includes at least one of the following:

[0031] The terminal device sends a random access preamble to at least one candidate cell based on physical downlink control channel commands.

[0032] The terminal device triggers conditional LTM cell handover in response to at least one candidate cell meeting the conditional LTM execution conditions.

[0033] In response to the fulfillment of the Conditional LTM execution conditions, the terminal device sends a Conditional LTM cell handover request and / or candidate cell identifier to the Media Access Control layer.

[0034] Optionally, the method further includes at least one of the following:

[0035] The time advance timer is used to determine whether to apply the time advance value of at least one candidate cell during conditional LTM cell handover.

[0036] Conditional LTM cell handover requests and / or candidate cell identifiers are used to trigger the Media Access Control layer to apply a time advance value for at least one candidate cell.

[0037] The advance timer is used for at least one candidate cell.

[0038] This application also provides a communication device, including: a memory, a processor, and a processing program stored in the memory and executable on the processor, wherein the processing program, when executed by the processor, implements the steps of any of the processing methods described above.

[0039] The communication equipment mentioned in this application may be a terminal device (such as a mobile phone), a network device (such as a base station), or a chip (such as a SOC or a baseband chip with communication functions). The specific meaning needs to be clarified according to the context.

[0040] This application also provides a computer-readable storage medium storing a processing program, which, when executed by a processor, implements the steps of any of the processing methods described above.

[0041] The above technical solutions improve the time advance processing mechanism, thereby supporting LTM handover without random access conditions. Attached Figure Description

[0042] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application. To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, those skilled in the art can obtain other drawings based on these drawings without any creative effort.

[0043] Figure 1 is a schematic diagram of the hardware structure of a mobile terminal implementing various embodiments of this application;

[0044] Figure 2 is a communication network system architecture diagram provided in an embodiment of this application;

[0045] Figure 3 is a schematic diagram of the hardware structure of a controller 140 provided in this application;

[0046] Figure 4 is a schematic diagram of the hardware structure of a network node 150 provided in this application;

[0047] Figure 5 is a flowchart illustrating the processing method according to the first embodiment;

[0048] Figure 6 is a schematic diagram of the interaction timing according to the second embodiment;

[0049] Figure 7 is a flowchart illustrating the processing method according to the fifth embodiment;

[0050] Figure 8 is a schematic diagram of the processing device provided in an embodiment of this application;

[0051] Figure 9 is a schematic diagram of the processing device provided in an embodiment of this application;

[0052] Figure 10 is a schematic diagram of the structure of the communication device provided in the embodiment of this application.

[0053] The realization of the objectives, functional features, and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. The accompanying drawings have illustrated specific embodiments of this application, which will be described in more detail below. These drawings and textual descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concepts of this application to those skilled in the art through reference to specific embodiments.

[0054] Implementation methods of this application

[0055] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0056] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element, and / or, components, features, and elements with the same names in different embodiments of this application may have the same meaning or different meanings, the specific meaning of which must be determined by its interpretation in that specific embodiment or further in conjunction with the context of that specific embodiment.

[0057] It should be understood that although the terms first, second, third, etc., may be used herein to describe various information, such information should not be limited to these terms. These terms are used only to distinguish information of the same type from one another. For example, without departing from the scope of this document, first information may also be referred to as second information, and similarly, second information may also be referred to as first information. Depending on the context, the word "if," as used herein, may be interpreted as "when," "when," or "in response to determination." Furthermore, as used herein, the singular forms "a," "an," and "the" are intended to also include the plural forms unless the context indicates otherwise. It should be further understood that the terms "comprising," "including," indicate the presence of the stated feature, step, operation, element, component, item, kind, and / or group, but do not exclude the presence, occurrence, or addition of one or more other features, steps, operations, elements, components, items, kinds, and / or groups. The terms "or," "and / or," "including at least one of the following," etc., as used in this application, may be interpreted as inclusive, or mean any one or any combination thereof. For example, "including at least one of the following: A, B, C" means "any one of the following: A; B; C; A and B; A and C; B and C; A and B and C." Similarly, "A, B, or C" or "A, B, and / or C" means "any one of the following: A; B; C; A and B; A and C; B and C; A and B and C." Exceptions to this definition only occur when the combination of elements, functions, steps, or operations is inherently mutually exclusive in some way.

[0058] It should be understood that although the steps in the flowcharts of this application's embodiments are shown sequentially according to the arrows, these steps are not necessarily executed in the order indicated by the arrows. Unless explicitly stated herein, there is no strict order restriction on the execution of these steps, and they can be executed in other orders. Moreover, at least some of the steps in the figures may include multiple sub-steps or multiple stages. These sub-steps or stages are not necessarily completed at the same time, but can be executed at different times, and their execution order is not necessarily sequential, but can be performed alternately or in turn with other steps or at least a portion of the sub-steps or stages of other steps.

[0059] Depending on the context, the words “if” or “suppose” as used here can be interpreted as “when” or “in response to determination” or “in response to detection.” Similarly, depending on the context, the phrases “if determination” or “if detection (of the stated condition or event)” can be interpreted as “when determination” or “in response to determination” or “when detection (of the stated condition or event)” or “in response to detection (of the stated condition or event).”

[0060] It should be noted that step designations such as S1 and S2 are used in this document for the purpose of more clearly and concisely describing the corresponding content, and do not constitute a substantial limitation on the order. In specific implementation, those skilled in the art may execute S2 first and then S1, etc., but these should all be within the protection scope of this application.

[0061] It should be understood that the specific embodiments described herein are merely illustrative of this application and are not intended to limit this application.

[0062] In the following description, the use of suffixes such as "module," "part," or "unit" to denote elements is solely for the purpose of illustrative purposes and has no specific meaning in itself. Therefore, "module," "part," or "unit" may be used interchangeably.

[0063] The communication equipment mentioned in this application may be a terminal device (such as a mobile phone), a network device (such as a base station), or a chip (such as a SOC or a baseband chip with communication functions). The specific meaning needs to be clarified according to the context.

[0064] Terminal devices can be implemented in various forms. For example, the terminal devices described in this application may include smart terminal devices such as mobile phones, tablets, laptops, handheld computers, personal digital assistants (PDAs), portable media players (PMPs), navigation devices, wearable devices, smart bracelets, pedometers, etc., as well as fixed terminal devices such as digital TVs and desktop computers.

[0065] The following description will use a mobile terminal as an example. Those skilled in the art will understand that, apart from elements specifically designed for mobile purposes, the construction according to the embodiments of this application can also be applied to fixed-type terminal devices.

[0066] Please refer to Figure 1, which is a schematic diagram of the hardware structure of a mobile terminal implementing various embodiments of this application. The mobile terminal 100 may include: an RF (Radio Frequency) unit 101, a WiFi module 102, an audio output unit 103, an A / V (Audio / Video) input unit 104, a sensor 105, a display unit 106, a user input unit 107, an interface unit 108, a memory 109, a processor 110, and a power supply 111, etc. Those skilled in the art will understand that the mobile terminal structure shown in Figure 1 does not constitute a limitation on the mobile terminal. The mobile terminal may include more or fewer components than shown, or combine certain components, or have different component arrangements.

[0067] The following section, with reference to Figure 1, provides a detailed description of each component of the mobile terminal:

[0068] The radio frequency unit 101 can be used for receiving and transmitting signals during information transmission or calls. Specifically, it receives downlink information from the base station and processes it with the processor 110; additionally, it transmits uplink data to the base station. Typically, the radio frequency unit 101 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low-noise amplifier, a duplexer, etc. And / or, the radio frequency unit 101 can also communicate wirelessly with networks and other devices. The aforementioned wireless communications may use any communication standard or protocol, including but not limited to GSM (Global System of Mobile communication), GPRS (General Packet Radio Service), CDMA2000 (Code Division Multiple Access 2000), WCDMA (Wideband Code Division Multiple Access), TD-SCDMA (Time Division-Synchronous Code Division Multiple Access), FDD-LTE (Frequency Division Duplexing-Long Term Evolution), TDD-LTE (Time Division Duplexing-Long Term Evolution), 5G, and 6G.

[0069] WiFi is a short-range wireless transmission technology. Mobile terminals using WiFi module 102 can help users send and receive emails, browse web pages, and access streaming media, providing wireless broadband internet access. Although Figure 1 shows WiFi module 102, it is understood that it is not an essential component of the mobile terminal and can be omitted as needed without altering the essence of the invention.

[0070] The audio output unit 103 can convert audio data received by the radio frequency unit 101 or the WiFi module 102 or stored in the memory 109 into audio signals and output them as sound when the mobile terminal 100 is in call signal receiving mode, call mode, recording mode, voice recognition mode, broadcast receiving mode, etc. Furthermore, the audio output unit 103 can also provide audio output related to specific functions performed by the mobile terminal 100 (e.g., call signal receiving sound, message receiving sound, etc.). The audio output unit 103 may include a speaker, a buzzer, etc.

[0071] The A / V input unit 104 is used to receive audio or video signals. The A / V input unit 104 may include a graphics processing unit (GPU) 1041 and a microphone 1042. The GPU 1041 processes image data of still images or videos acquired by an image capture device (such as a camera) in video capture mode or image capture mode. The processed image frames can be displayed on the display unit 106. The image frames processed by the GPU 1041 can be stored in the memory 109 (or other storage medium) or transmitted via the radio frequency unit 101 or the WiFi module 102. The microphone 1042 can receive sound (audio data) in operating modes such as telephone call mode, recording mode, and voice recognition mode, and can process such sound into audio data. The processed audio (voice) data can be converted into a format that can be transmitted to a mobile communication base station via the radio frequency unit 101 in telephone call mode. The microphone 1042 can implement various types of noise cancellation (or suppression) algorithms to eliminate (or suppress) noise or interference generated during the reception and transmission of audio signals.

[0072] The mobile terminal 100 also includes at least one sensor 105, such as a light sensor, a motion sensor, and other sensors. Optionally, the light sensor includes an ambient light sensor and a proximity sensor. Optionally, the ambient light sensor can adjust the brightness of the display panel 1061 according to the ambient light level, and the proximity sensor can turn off the display panel 1061 and / or backlight when the mobile terminal 100 is moved to the ear. As a type of motion sensor, an accelerometer sensor can detect the magnitude of acceleration in various directions (generally three axes), and can detect the magnitude and direction of gravity when stationary. It can be used for applications that recognize the phone's posture (such as landscape / portrait switching, related games, magnetometer posture calibration), vibration recognition related functions (such as pedometer, tapping), etc. Other sensors that may be configured in the phone, such as fingerprint sensors, pressure sensors, iris sensors, molecular sensors, gyroscopes, barometers, hygrometers, thermometers, and infrared sensors, will not be described in detail here.

[0073] The display unit 106 is used to display information input by the user or information provided to the user. The display unit 106 may include a display panel 1061, which may be configured in the form of a liquid crystal display (LCD), an organic light-emitting diode (OLED), or the like.

[0074] User input unit 107 can be used to receive input numerical or character information, and generate key signal inputs related to user settings and function control of the mobile terminal. Optionally, user input unit 107 may include touch panel 1071 and other input devices 1072. Touch panel 1071, also known as touch screen, can collect touch operations on or near the user (such as operations performed by the user using a finger, stylus, or any suitable object or accessory on or near touch panel 1071), and drive corresponding connection devices according to a pre-set program. Touch panel 1071 may include two parts: touch detection device and touch controller. Optionally, touch detection device detects the user's touch position and the signal generated by the touch operation, and transmits the signal to touch controller; touch controller receives touch information from touch detection device, converts it into touch point coordinates, sends it to processor 110, and can receive and execute commands from processor 110. And / or, touch panel 1071 can be implemented using various types such as resistive, capacitive, infrared, and surface acoustic wave. In addition to the touch panel 1071, the user input unit 107 may also include other input devices 1072. Optionally, other input devices 1072 may include, but are not limited to, one or more of the following: physical keyboard, function keys (such as volume control buttons, power buttons, etc.), trackball, mouse, joystick, etc., without being specifically limited here.

[0075] Optionally, the touch panel 1071 may cover the display panel 1061. When the touch panel 1071 detects a touch operation on or near it, it transmits the information to the processor 110 to determine the type of touch event. Subsequently, the processor 110 provides corresponding visual output on the display panel 1061 according to the type of touch event. Although in FIG. 1, the touch panel 1071 and the display panel 1061 are implemented as two independent components to realize the input and output functions of the mobile terminal, in some embodiments, the touch panel 1071 and the display panel 1061 can be integrated to realize the input and output functions of the mobile terminal. The specific implementation is not limited here.

[0076] Interface unit 108 serves as an interface through which at least one external device can connect to mobile terminal 100. For example, the external device may include a wired or wireless headset port, an external power supply (or battery charger) port, a wired or wireless data port, a memory card port, a port for connecting a device with an identification module, an audio input / output (I / O) port, a video I / O port, a headphone port, and so on. Interface unit 108 may be used to receive input (e.g., data, power, etc.) from the external device and transmit the received input to one or more elements within mobile terminal 100, or it may be used to transmit data between mobile terminal 100 and the external device.

[0077] The memory 109 can be used to store software programs and various data. The memory 109 may primarily include a program storage area and a data storage area. Optionally, the program storage area may store the operating system, applications required for at least one function (such as sound playback, image playback, etc.), etc.; the data storage area may store data created based on the use of the mobile phone (such as audio data, phonebook, etc.). And / or, the memory 109 may include high-speed random access memory, and may also include non-volatile memory, such as at least one disk storage device, flash memory device, or other volatile solid-state storage device.

[0078] The processor 110 is the control center of the mobile terminal. It connects various parts of the mobile terminal via various interfaces and lines. By running or executing software programs and / or modules stored in the memory 109, and by calling data stored in the memory 109, it performs various functions and processes data of the mobile terminal, thereby providing overall monitoring of the mobile terminal. The processor 110 may include one or more processing units; preferably, the processor 110 may integrate an application processor and a modem processor. Optionally, the application processor mainly handles the operating system, user interface, and applications, while the modem processor mainly handles wireless communication. It is understood that the modem processor may not be integrated into the processor 110.

[0079] The mobile terminal 100 may also include a power supply 111 (such as a battery) that supplies power to various components. Preferably, the power supply 111 can be logically connected to the processor 110 through a power management system, thereby enabling functions such as charging, discharging, and power consumption management through the power management system.

[0080] Although not shown in Figure 1, the mobile terminal 100 may also include a Bluetooth module, etc., which will not be described in detail here.

[0081] To facilitate understanding of the embodiments of this application, the communication network system on which the mobile terminal of this application is based is described below.

[0082] Please refer to Figure 2, which is a communication network system architecture diagram provided in an embodiment of this application. The communication network system is a New Radio (NR) system based on general mobile communication technology. The NR system includes a UE (User Equipment) 201, an E-UTRAN (Evolved UMTS Terrestrial Radio Access Network) 202, an EPC (Evolved Packet Core) 203, and the operator's IP services 204, which are connected in sequence.

[0083] Optionally, UE201 can be the aforementioned terminal device 100, which will not be described in detail here.

[0084] E-UTRAN202 includes eNodeB2021 and other eNodeB2022, etc. Optionally, eNodeB2021 can connect to other eNodeB2022 via backhaul (e.g., X2 interface), and eNodeB2021 connects to EPC203, providing access from UE201 to EPC203.

[0085] EPC203 may include an MME (Mobility Management Entity) 2031, an HSS (Home Subscriber Server) 2032, other MMEs 2033, an SGW (Serving Gateway) 2034, a PGW (Packet Data Network Gateway) 2035, and a PCRF (Policy and Charging Rules Function) 2036, etc. Optionally, MME2031 is the control node that handles signaling between UE201 and EPC203, providing bearer and connection management. HSS2032 is used to provide registers to manage functions such as the Home Location Register (not shown in the figure) and stores user-specific information such as service characteristics and data rates. All user data can be sent through SGW2034. PGW2035 can provide UE 201 IP address allocation and other functions. PCRF2036 is the policy and charging control decision point for service data flow and IP bearer resources. It selects and provides available policy and charging control decisions for the policy and charging enforcement function unit (not shown in the figure).

[0086] IP services 204 may include the Internet, intranet, IMS (IP Multimedia Subsystem), or other IP services.

[0087] Although the above description uses the LTE system as an example, those skilled in the art should know that this application is not only applicable to the LTE system, but also to other wireless communication systems, such as GSM, CDMA2000, WCDMA, TD-SCDMA, 5G and future new network systems (such as 6G), etc., without limitation.

[0088] Figure 3 is a schematic diagram of the hardware structure of a controller 140 provided in this application. The controller 140 includes a memory 1401 and a processor 1402. The memory 1401 is used to store program instructions, and the processor 1402 is used to call the program instructions in the memory 1401 to execute the steps performed by the controller in the first embodiment of the above method. The implementation principle and beneficial effects are similar, and will not be described again here.

[0089] Optionally, the controller further includes a communication interface 1403, which can be connected to the processor 1402 via a bus 1404. The processor 1402 can control the communication interface 1403 to implement the receiving and sending functions of the controller 140.

[0090] Figure 4 is a schematic diagram of the hardware structure of a network node 150 provided in this application. The network node 150 includes a memory 1501 and a processor 1502. The memory 1501 is used to store program instructions, and the processor 1502 is used to call the program instructions in the memory 1501 to execute the steps performed by the first node in the above method embodiment. The implementation principle and beneficial effects are similar, and will not be described again here.

[0091] Optionally, the controller further includes a communication interface 1503, which can be connected to the processor 1502 via a bus 1504. The processor 1502 can control the communication interface 1503 to implement the receiving and sending functions of the network node 150.

[0092] The integrated modules described above, implemented as software functional modules, can be stored in a computer-readable storage medium. These software functional modules, stored in a storage medium, include several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) or processor to execute some steps of the methods of the various embodiments of this application.

[0093] In the above embodiments, implementation can be achieved, in whole or in part, through software, hardware, firmware, or any combination thereof. When implemented in software, it can be implemented, in whole or in part, as a computer program product. A computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, all or part of the flow or function according to the embodiments of this application is generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a storage medium or transmitted from one storage medium to another. For example, computer instructions can be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via wired (e.g., coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means. The storage medium can be any available medium that a computer can access or a data storage device such as a server or data center that integrates one or more available media. The available medium can be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., solid-state disk, SSD), etc.

[0094] Based on the above-described mobile terminal hardware structure and communication network system, various embodiments of this application are proposed.

[0095] Technical terms used in the embodiments of this application:

[0096] BM: Beam Management;

[0097] MAC CE: Media Access Control Element;

[0098] RRC: Radio Resource Control;

[0099] RACH-less: No random access required;

[0100] LTM: L1 / L2 Triggered Mobility;

[0101] CLTM: Conditional L1 / L2 Triggered Mobility;

[0102] TA: Timing Advance;

[0103] TAT: Timing Advance Timer;

[0104] TCI: Transmission Configuration Indicator, sends configuration instructions;

[0105] PDCCH: Physical Downlink Control Channel.

[0106] First Embodiment

[0107] Referring to Figure 5, which is a flowchart illustrating the processing method according to the first embodiment, the processing method of this application embodiment can be applied to a terminal device (such as a mobile phone), and includes the following steps:

[0108] S2: In response to receiving the time advance value of at least one candidate cell, start or restart the time advance timer.

[0109] Optionally, when conditional LTM handover supports access-free operation, the execution conditions can be evaluated through the MAC layer and / or RRC layer. When a candidate cell meets the execution conditions, conditional LTM handover can be triggered. Therefore, it is necessary to obtain the candidate cell time advance value in advance. However, there is currently no clear way to manage and / or maintain the candidate cell time advance value obtained in advance.

[0110] Optionally, in response to receiving the time advance value of at least one candidate cell, the terminal device starts or restarts the time advance timer.

[0111] Optionally, in response to receiving the time advance value of at least one candidate cell, the terminal device starts or restarts the effective time advance timer.

[0112] Optionally, the timing advance value of at least one candidate cell is carried in the media access control element.

[0113] Optionally, at least one candidate cell may include all conditional LTM candidate cells.

[0114] Optionally, at least one candidate cell time advance value is not the maximum value, for example: FFF.

[0115] Optionally, F is hexadecimal and can be represented by 4 binary bits, for example: 1111.

[0116] Optionally, FFF is represented by 12 binary bits.

[0117] Optionally, a time advance timer or an effective time advance timer is used for at least one candidate cell.

[0118] Optionally, a time advance timer or an effective time advance timer is used to determine whether to apply the time advance value of at least one candidate cell during conditional LTM cell handover.

[0119] Optionally, the terminal device sends a random access preamble to at least one candidate cell based on a physical downlink control channel command.

[0120] Optionally, if at least one candidate cell meets the conditions for conditional LTM execution, conditional LTM cell handover is triggered.

[0121] Optionally, if the conditions for conditional LTM execution are met, the Radio Resource Control (RRC) layer sends a conditional LTM cell handover request and / or a candidate cell identifier to the Media Access Control (MAC) layer.

[0122] Optionally, the conditional LTM cell handover request and / or candidate cell identifier are used to trigger the media access control layer to apply a time advance value for at least one candidate cell.

[0123] The technical solution of this embodiment improves the time advance processing mechanism by starting or restarting the time advance timer or effective time advance timer in response to receiving the time advance value of at least one candidate cell, thereby supporting LTM handover without random access conditions.

[0124] Second Embodiment

[0125] Referring to Figure 6, which is a schematic diagram of the interaction timing according to the second embodiment, this embodiment further discloses the process of configuring an effective time advance timer for the terminal device, based on the first embodiment of this application.

[0126] Optionally, after the terminal device reports a measurement report to the network device (e.g., the source cell and / or the source base station), the network device sends a radio resource control reconfiguration signaling message containing conditional LTM configuration information to the terminal device.

[0127] Optionally, the measurement report reported by the terminal device is a Layer 3 measurement report.

[0128] Optionally, the source cell obtains the LTM candidate cell configuration.

[0129] Optionally, the conditional LTM candidate cell configuration includes conditional LTM configuration and / or conditional LTM execution conditions.

[0130] Optionally, the conditional LTM candidate cells are cells with the same central unit (Intra-CU).

[0131] Optionally, the source cell and / or source base station generate a conditional LTM configuration.

[0132] Optionally, the conditional LTM configuration includes at least one of the following: conditional LTM configuration identifier, candidate cell conditional LTM configuration, and candidate cell conditional LTM execution conditions.

[0133] Optionally, the candidate cell condition LTM execution conditions include a layer 1 measurement configuration and / or at least one layer 3 measurement configuration.

[0134] Optionally, the LTM measurement event is a Layer 1 (L1) measurement event.

[0135] Optionally, the layer-one measurement event includes at least one of the following:

[0136] Event LTM2: The serving cell beam becomes worse than the absolute threshold;

[0137] Event LTM3: The beam of the candidate cell becomes higher than the beam of the serving cell after compensation.

[0138] Event LTM4: The beam of candidate cell becomes better than the absolute threshold;

[0139] Event LTM5: The serving cell beam becomes worse than absolute threshold1 and the candidate cell beam becomes better than another absolute threshold2.

[0140] Optionally, a layer-one measurement event can be a beam management (BM) measurement event.

[0141] Optionally, a layer-one measurement event can be a layer-one-two mobility measurement event.

[0142] Optionally, the candidate cell conditional LTM configuration includes at least one of the following: LTM candidate identifier, LTM candidate configuration, conditional LTM candidate configuration, early uplink synchronization configuration, no identity reset, serving cell no identity reset, and attempt LTM-Switch. For details, please refer to protocol TS 38.300v14, 6.3.2 LTM configuration.

[0143] Optionally, the candidate cell conditional LTM configuration includes the serving cell LTM configuration and / or the candidate cell LTM configuration.

[0144] Optionally, the candidate cell conditional LTM configuration includes at least one of the following: conditional LTM candidate identifier, conditional LTM execution condition identifier, layer-1 measurement event identifier, and effective time advance timer.

[0145] Optionally, the network device sends a radio resource control reconfiguration signaling message to the terminal device.

[0146] Optionally, the Radio Resource Control reconfiguration signaling carries conditional LTM configuration.

[0147] Optionally, the terminal device stores LTM configuration conditions and / or sets LTM execution conditions.

[0148] Optionally, the terminal device sends a radio resource control reconfiguration completion signal to the network device.

[0149] Optionally, the Radio Resource Control (RRC) reconfiguration completion signaling is used in response to a RRC reconfiguration signaling sent by a network device.

[0150] Optionally, the terminal device evaluates candidate cells based on conditional LTM configuration.

[0151] Optionally, the terminal device evaluates whether there are any candidate cells that meet the execution conditions based on the candidate cell conditions LTM execution conditions.

[0152] Optionally, the terminal device performs early downlink synchronization and / or early uplink synchronization.

[0153] Optionally, the network device determines the candidate cells for early downlink synchronization by activating / deactivating the MAC CE based on the candidate cell TCI status.

[0154] Optionally, during the early uplink synchronization phase, the network device carries at least one candidate cell's timing advance value and / or LTM candidate identifier via MAC CE.

[0155] Optionally, the network device triggers early uplink synchronization with the candidate cell via a Physical Downlink Control Channel (PDCCH) order.

[0156] Optionally, the network device determines candidate cells for performing early uplink synchronization and / or early downlink synchronization based on the Layer 1 measurement results reported by the terminal device.

[0157] Optionally, the reported Layer 1 measurement results may be reported in at least one of the following ways: periodic reporting, non-periodic reporting, or semi-static reporting.

[0158] Optionally, the network device carries at least one candidate cell timing advance value and / or LTM candidate identifier via MAC CE.

[0159] Optionally, after receiving at least one candidate cell time advance value, the terminal device starts or restarts the valid time advance timer, such as ValidtimeAlignmentTimer.

[0160] Optionally, the effective time advance timer is used to determine whether the advance time of the candidate cell is still valid.

[0161] Optionally, an effective time advance timer is used for at least one candidate cell.

[0162] Optionally, the effective time advance timer can be a time advance timer.

[0163] Optionally, if at least one candidate cell time advance information is not at its maximum value (FFF), then the effective time advance timer is started or restarted.

[0164] Optionally, the effective time advance timer duration can be shorter than the time advance timer duration.

[0165] Optionally, the duration of the advance timer can be referenced in protocol TS 38.331v18, 6.3.2.

[0166] Optionally, the effective time advance timer can be used for different candidate cells. For example, the terminal device receives the time advance value of at least one candidate cell. If it is determined from the time advance value that no effective time advance timer is in operation, the effective time advance timer can be started or restarted.

[0167] Optionally, the MAC CE carries the timing advance values ​​for all candidate cells.

[0168] Optionally, the time advance value for candidate cells that have not performed early uplink synchronization is FFF.

[0169] Optionally, the time advance information is released when the effective time advance timer expires.

[0170] Optionally, when the effective time advance timer expires, all candidate cell time advance information is released.

[0171] Optionally, the time advance information is retained or maintained when the effective time advance timer expires.

[0172] Optionally, when the effective time advance timer expires, the time advance information of all candidate cells is retained or maintained.

[0173] The technical solution of this embodiment specifically involves receiving conditional LTM configuration information sent by network equipment through a terminal device, and managing or maintaining the time advance value of at least one candidate cell according to the effective time advance timer in the conditional LTM configuration information, thereby improving the time advance processing mechanism and supporting handover without random access conditional LTM.

[0174] Third Embodiment

[0175] Based on any of the foregoing embodiments of this application, this embodiment further discloses the process of a terminal device performing conditional LTM cell handover.

[0176] Optionally, the terminal device reports a Layer 1 measurement report to the network device.

[0177] Optionally, when at least one candidate cell satisfies a Layer 1 measurement event and / or an LTM measurement event, the terminal device reports a Layer 1 measurement report.

[0178] Optionally, the layer 1 measurement report is sent via MAC CE.

[0179] Optionally, the layer-one measurement report carries at least one layer-one measurement result.

[0180] Optionally, the layer 1 measurement result is at least one of periodic measurement results, aperiodic measurement results, and semi-persistent measurement results.

[0181] Optionally, network devices may trigger early downlink synchronization.

[0182] Optionally, the network device determines the candidate cells for early downlink synchronization by activating or deactivating the MAC CE based on the candidate cell TCI status.

[0183] Optionally, the network device responds to the measurement report reported by the terminal device under the condition of meeting the conditional LTM execution conditions, and performs early uplink synchronization and / or early downlink synchronization.

[0184] Optionally, the measurement report includes a Layer 1 measurement report and / or a Layer 3 measurement report.

[0185] Optionally, network devices can trigger early uplink synchronization with candidate cells via PDCCH order.

[0186] Optionally, the terminal device sends a random access preamble to the candidate cell based on the received PDCCH order.

[0187] Optionally, the source cell sends candidate cell time advance information to the terminal device.

[0188] Optionally, the terminal device is detached from the source cell and the target cell configuration and / or conditional LTM configuration are applied.

[0189] Optionally, when at least one candidate cell meets the candidate cell condition LTM execution condition, the execution is separated and synchronized with the target cell execution.

[0190] Optionally, when at least one candidate cell meets the candidate cell conditional LTM execution conditions, conditional LTM cell handover is triggered.

[0191] Optionally, at least one candidate cell meets the candidate cell condition LTM execution condition, including: meeting a Layer 1 measurement event and / or meeting a Layer 3 measurement event.

[0192] Optionally, the terminal device initiates a random access procedure.

[0193] Optionally, if the terminal device does not have a target cell time advance value and / or the target cell time advance value is the maximum value FFF, and there is no time advance value measured by the terminal device, then a random access procedure is initiated.

[0194] Optionally, the terminal device completes conditional LTM cell handover.

[0195] Optionally, the terminal device sends a radio resource control reconfiguration completion signaling based on configuration scheduling and / or dynamic scheduling.

[0196] Optionally, the terminal device sends a radio resource control reconfiguration completion signaling to the target cell.

[0197] Optionally, when the terminal device performs a conditional LTM handover without random access and receives the first downlink data schedule and / or uplink data schedule, the conditional LTM handover is considered complete.

[0198] Optionally, the terminal device does not stop the advance timer and / or effective timer after completing the conditional LTM cell handover.

[0199] Optionally, the terminal device completes the conditional LTM cell handover without deleting or releasing the candidate cell's advance value.

[0200] The technical solution in this embodiment improves the time advance processing mechanism by managing or maintaining the time advance value of at least one candidate cell through a time advance timer during the handover process of Conditional LTM cell handover, thereby supporting handover without random access.

[0201] Fourth embodiment

[0202] Based on any of the foregoing embodiments of this application, this embodiment further discloses a scheme for a terminal device to manage or maintain the time advance value of at least one candidate cell through a time advance timer.

[0203] Optionally, the terminal device includes a media access control layer and a radio resource control layer.

[0204] Optionally, the Radio Resource Control (RRC) layer is located above the Media Access Control (MAC) layer, as detailed in protocol TS 38.300v18, 4.4.2.

[0205] Optionally, the media access control layer evaluates the measurement results of the first layer.

[0206] Optionally, the media access control layer evaluates layer-one measurements and / or layer-one measurement events.

[0207] Optionally, the media access control layer evaluates layer-one measurement and / or layer-one measurement events based on the physical layer and / or layer-one measurement results.

[0208] Optionally, the media access control layer sends indication information to the upper layer.

[0209] Optionally, the indication information is used to indicate at least one of the following: candidate cell information that satisfies the Layer 1 measurement event, candidate cell information that satisfies the conditional LTM handover execution conditions, and candidate cell information that satisfies the conditional LTM handover.

[0210] Optionally, the upper layer includes a radio resource control layer.

[0211] Optionally, when at least one layer-one measurement satisfies a layer-one measurement event, a layer-one measurement indication is sent.

[0212] Optionally, the indication information includes at least one of the following: Layer 1 measurement event identifier, conditional LTM execution condition identifier, LTM candidate identifier, and conditional LTM candidate identifier.

[0213] Optionally, the radio resource control layer performs a conditional layer-1 mobility assessment.

[0214] Optionally, the Radio Resource Control (RRC) layer performs a Conditional Layer 1-2 Mobility Assessment based on the reported instruction information.

[0215] Optionally, the radio resource control layer determines candidate cells that meet the Layer 1 measurement event based on the reported indication information.

[0216] Optionally, the Radio Resource Control (RRC) layer determines candidate cells that satisfy a Layer 1 measurement event based on at least one of the following: Layer 1 measurement event identifier, conditional LTM execution condition identifier, LTM candidate identifier, and conditional LTM candidate identifier.

[0217] Optionally, when a Layer 1 / 2 mobility candidate cell satisfies a Layer 1 measurement event and / or a Layer 3 measurement event, a conditional Layer 1 / 2 mobility cell handover is performed, for example:

[0218] When a Layer 1 / 2 mobility candidate cell meets the Layer 1 measurement event, perform a conditional Layer 1 / 2 mobility cell handover; or,

[0219] When a Layer 1 / 2 mobility candidate cell meets the Layer 3 measurement event, perform a Layer 1 / 2 mobility cell handover; or,

[0220] When both the Layer 1 and Layer 2 mobility candidate cells meet the Layer 1 measurement event and the Layer 3 measurement event, the Layer 1 and Layer 2 mobility cell handover is performed.

[0221] Optionally, satisfying a Layer 3 measurement event includes satisfying one of the Layer 1 measurement events, and / or satisfying both Layer 3 measurement events.

[0222] Optionally, when at least one Layer 1-2 mobility candidate cell satisfies a Layer 1 measurement event and / or a Layer 3 measurement event, a conditional Layer 1-2 mobility cell handover is performed.

[0223] Optionally, the terminal device may autonomously determine the candidate cells for conditional layer 1-2 mobility cell handover.

[0224] Optionally, the Radio Resource Control (RRC) layer sends a Conditions Layer 1-2 Mobility Cell Handover Request to the Media Access Control (MAC) layer and / or the lower layer.

[0225] Optionally, the Radio Resource Control (RRC) layer determines a candidate cell for performing a Conditional Layer 1-2 Mobility Cell Handover and sends a Conditional Layer 1-2 Mobility Cell Handover Request to the Media Access Control (MAC) layer.

[0226] Optionally, the Condition Layer 1-2 mobile cell handover request carries Condition Layer 1-2 mobile cell handover information.

[0227] Optionally, the conditional layer 1-2 mobility cell handover information includes the layer 1-2 mobility candidate cell identifier and / or the layer 1-2 mobility candidate cell physical cell identifier.

[0228] Optionally, the Media Access Control layer receives a Conditions Layer 1-2 Mobility Cell Handover Request.

[0229] Optionally, the media access control layer applies a time advance value of at least one candidate cell based on the condition layer 1-2 mobility cell handover request.

[0230] Optionally, the Media Access Control (MAC) layer applies the timing advance value of at least one candidate cell based on the conditional Layer 1 / 2 mobility cell handover information. For example, the MAC layer determines the timing advance value of at least one candidate cell based on the Layer 1 / 2 mobility candidate cell identifier and / or the Layer 1 / 2 mobility candidate cell physical cell identifier, and applies the timing advance value of at least one candidate cell.

[0231] Optionally, the media access control layer applies a time advance value based on the effective time advance timer. For example, when the effective time advance timer is running, the time advance value is applied; and / or, when the effective time advance timer is not running, a random access procedure is initiated.

[0232] Optionally, the terminal device determines at least one candidate cell as the target cell and applies the time advance value of the target cell.

[0233] Optionally, when the terminal device applies the time advance value of the target cell, it is considered that the handover of the LTM cell without random access conditions is in progress, and / or, the time advance timer is set as an effective time advance timer.

[0234] Optionally, when the terminal device applies the time advance value of the target cell, it is considered that the handover of the LTM cell without random access conditions is in progress, and / or, the time advance timer is set as an effective time advance timer and the time advance timer is started.

[0235] Optionally, when the terminal device applies the time advance value of the target cell, it is considered that the handover of the LTM cell without random access conditions is in progress, and / or, the time advance timer is started.

[0236] Optionally, when the terminal device performs a conditional LTM cell handover without random access, it instructs the underlying layer (e.g., the physical layer control layer) to waive the random access procedure.

[0237] Optionally, when the terminal device applies the time advance value of the target cell, it stops the effective time advance timer and / or instructs the underlying layer (e.g., the physical layer) to skip the random access procedure.

[0238] Optionally, the media access control layer determines the application time advance value based on the time advance timer. For example, when the time advance timer is running, the application time advance value is applied.

[0239] Optionally, the Media Access Control (MAC) layer applies a time advance value based on the conditional Layer 1 / 2 mobility cell handover information, and / or the MAC layer applies a time advance value based on a time advance timer and / or an effective time advance timer. For example, if the MAC layer determines a candidate cell based on the Layer 1 / 2 mobility candidate cell identifier and / or the Layer 1 / 2 mobility candidate cell physical cell identifier, and the effective time advance timer of the candidate cell is in operation, then at least one candidate cell's time advance value is applied.

[0240] Optionally, the media access control layer determines whether to apply the time advance value based on the time advance timer. For example, if the time advance timer is running, the time advance value is applied; if the time advance timer is not running, a random access procedure is initiated.

[0241] The technical solution in this embodiment manages or maintains the time advance value of at least one candidate cell through a time advance timer, thereby improving the time advance processing mechanism and supporting LTM handover without random access conditions.

[0242] Fifth embodiment

[0243] Referring to Figure 7, which is a flowchart illustrating the processing method according to the fifth embodiment, the method described in this embodiment can be applied to network devices (such as base stations) and includes the following steps:

[0244] S1: Send the timing advance value of at least one candidate cell so that the terminal device can receive the timing advance value of at least one candidate cell and start or restart the timing advance timer.

[0245] Optionally, the network device sends the timing advance value of at least one candidate cell to the terminal device.

[0246] Optionally, in response to receiving the time advance value of at least one candidate cell, the terminal device starts or restarts the time advance timer.

[0247] Optionally, the timing advance value of at least one candidate cell is carried in the media access control element.

[0248] Optionally, at least one candidate cell may include all candidate cells.

[0249] Optionally, at least one candidate cell time advance value is not the maximum value, for example: FFF.

[0250] Optionally, F is hexadecimal and can be represented by 4 binary bits, for example: 1111.

[0251] Optionally, FFF is represented by 12 binary bits.

[0252] Optionally, the time advance timer is an effective time advance timer.

[0253] Optionally, a time advance timer is used for at least one candidate cell.

[0254] Optionally, a time advance timer is used to determine whether to apply the time advance value of at least one candidate cell during conditional LTM cell handover.

[0255] Optionally, the terminal device sends a random access preamble to at least one candidate cell based on a physical downlink control channel command.

[0256] Optionally, if at least one candidate cell meets the conditions for conditional LTM execution, conditional LTM cell handover is triggered.

[0257] Optionally, if the conditions for conditional LTM execution are met, the Radio Resource Control (RRC) layer sends a conditional LTM cell handover request and / or a candidate cell identifier to the Media Access Control (MAC) layer.

[0258] Optionally, the conditional LTM cell handover request and / or candidate cell identifier are used to trigger the media access control layer to apply a time advance value for at least one candidate cell.

[0259] The technical solution of this embodiment specifically sends the time advance value of at least one candidate cell to the terminal device through the network device, so that the terminal device starts or restarts the time advance timer in response to receiving the time advance value of at least one candidate cell, thereby improving the time advance processing mechanism and supporting LTM handover without random access conditions.

[0260] Sixth Embodiment

[0261] Referring to Figure 8, which is a schematic diagram of the processing device provided in an embodiment of this application, the device can be mounted on or is the terminal device in the above method embodiment. The processing device shown in Figure 8 can be used to perform some or all of the functions in the method embodiment described above. As shown in Figure 8, the processing device 1100 includes:

[0262] Processing module 1101 is used to start or restart the time advance timer in response to receiving the time advance value of at least one candidate cell.

[0263] Optionally, the device further includes at least one of the following:

[0264] At least one candidate cell's timing advance value is carried in the media access control element;

[0265] At least one candidate cell includes all candidate cells;

[0266] At least one candidate cell's time advance value is not the maximum value;

[0267] The time advance timer includes the effective time advance timer.

[0268] Optionally, the device further includes at least one of the following:

[0269] Based on physical downlink control channel commands, a random access preamble is sent to at least one candidate cell;

[0270] In response to at least one candidate cell meeting the conditional LTM execution conditions, a conditional LTM cell handover is triggered.

[0271] In response to the fulfillment of the Conditional LTM execution conditions, the Radio Resource Control (RRC) layer sends a Conditional LTM cell handover request and / or candidate cell identifier to the Media Access Control (MAC) layer.

[0272] Optionally, the device further includes at least one of the following:

[0273] The time advance timer is used to determine whether to apply the time advance value of at least one candidate cell during conditional LTM cell handover.

[0274] Conditional LTM cell handover requests and / or candidate cell identifiers are used to trigger the Media Access Control layer to apply a time advance value for at least one candidate cell.

[0275] The advance timer is used for at least one candidate cell.

[0276] The processing device provided in this application embodiment is similar in implementation principle and beneficial effect to the technical solution shown in the corresponding method embodiment above, and will not be described again here.

[0277] Seventh Embodiment

[0278] Referring to Figure 9, which is a second schematic diagram of the processing device provided in an embodiment of this application, the device can be mounted on or is the network device in the above method embodiment. The processing device shown in Figure 9 can be used to perform some or all of the functions in the method embodiment described above. As shown in Figure 9, the processing device 1200 includes:

[0279] The transmitting module 1201 is used to transmit the timing advance value of at least one candidate cell so that the terminal device can receive the timing advance value of at least one candidate cell and start or restart the timing advance timer.

[0280] Optionally, the device further includes at least one of the following:

[0281] At least one candidate cell's timing advance value is carried in the media access control element;

[0282] At least one candidate cell includes all candidate cells;

[0283] At least one candidate cell's advance time value is not the maximum value;

[0284] The time advance timer includes the effective time advance timer.

[0285] Optionally, the device further includes at least one of the following:

[0286] The terminal device sends a random access preamble to at least one candidate cell based on physical downlink control channel commands.

[0287] The terminal device triggers conditional LTM cell handover in response to at least one candidate cell meeting the conditional LTM execution conditions.

[0288] In response to the fulfillment of the Conditional LTM execution conditions, the terminal device sends a Conditional LTM cell handover request and / or candidate cell identifier to the Media Access Control layer.

[0289] Optionally, the device further includes at least one of the following:

[0290] The time advance timer is used to determine whether to apply the time advance value of at least one candidate cell during conditional LTM cell handover.

[0291] Conditional LTM cell handover requests and / or candidate cell identifiers are used to trigger the Media Access Control layer to apply a time advance value for at least one candidate cell.

[0292] The advance timer is used for at least one candidate cell.

[0293] The processing device provided in this application embodiment is similar in implementation principle and beneficial effect to the technical solution shown in the corresponding method embodiment above, and will not be described again here.

[0294] Referring to Figure 10, which is a schematic diagram of the structure of a communication device provided in an embodiment of this application, as shown in Figure 10, the communication device 160 described in this embodiment may be a terminal device (or a component that can be used in a terminal device) or a network device (or a component that can be used in a network device) mentioned in the foregoing method embodiments. The communication device 160 can be used to implement the methods corresponding to the terminal device or network device described in the above method embodiments, as detailed in the descriptions in the above method embodiments.

[0295] The communication device 160 may include one or more processors 161, which may also be referred to as processing units, and can perform certain control or processing functions. The processor 161 may be a general-purpose processor or a dedicated processor, such as a baseband processor or a central processing unit. The baseband processor can be used to process communication protocols and communication data, while the central processing unit can be used to control the communication device, execute software programs, and process data from the software programs.

[0296] Optionally, the processor 161 may also store instructions 163 or data (e.g., intermediate data). Optionally, instructions 163 may be executed by the processor 161, causing the communication device 160 to perform the methods described in the above method embodiments corresponding to the terminal device or network device.

[0297] Optionally, the communication device 160 may include a circuit that can perform the functions of sending, receiving, or communicating in the foregoing method embodiments.

[0298] Optionally, the communication device 160 may include one or more memories 162, which may store instructions 164 that can be executed on the processor 161 to cause the communication device 160 to perform the methods described in the above method embodiments.

[0299] Optionally, the memory 162 may also store data. The processor 161 and the memory 162 may be configured separately or integrated together.

[0300] Optionally, the communication device 160 may further include a transceiver 165 and / or an antenna 166. The processor 161, which may be referred to as a processing unit, controls the communication device 160 (terminal device, core network device, or wireless access network device). The transceiver 165, which may be referred to as a transceiver unit, transceiver, transceiver circuit, or transceiver, is used to implement the transceiver functions of the communication device 160.

[0301] Optionally, if the communication device 160 is used to implement the operation corresponding to the terminal device in the above embodiments, for example, the transceiver 165 and / or the processor 161 may start or restart the time advance timer in response to receiving the time advance value of at least one candidate cell.

[0302] Optionally, the specific implementation process of processor 161 and transceiver 165 can be found in the relevant descriptions of the above embodiments, and will not be repeated here.

[0303] Optionally, if the communication device 160 is used to implement the operation corresponding to the network device in the above embodiments, for example, the transceiver 165 can send the timing advance value of at least one candidate cell so that the terminal device can receive the timing advance value of at least one candidate cell and start or restart the timing advance timer.

[0304] Optionally, the specific implementation process of processor 161 and transceiver 165 can be found in the relevant descriptions of the above embodiments, and will not be repeated here.

[0305] The processor 161 and transceiver 165 described in this application can be implemented on ICs (Integrated Circuits), analog integrated circuits, RFICs (Radio Frequency Integrated Circuits), mixed-signal integrated circuits, ASICs (Application Specific Integrated Circuits), PCBs (Printed Circuit Boards), electronic devices, etc. The processor 161 and transceiver 165 can also be manufactured using various integrated circuit process technologies, such as CMOS (Complementary Metal Oxide Semiconductor), NMOS (N Metal-Oxide-Semiconductor), PMOS (Positive Channel Metal Oxide Semiconductor), BJT (Bipolar Junction Transistor), Bipolar CMOS (BiCMOS), silicon germanium (SiGe), gallium arsenide (GaAs), etc. In this application, the communication device can be a terminal device (such as a mobile phone) or a network device (such as a base station), depending on the context. Furthermore, the terminal device can be implemented in various forms. For example, the terminal devices described in this application may include mobile terminals such as mobile phones, tablets, laptops, handheld computers, personal digital assistants (PDAs), portable media players (PMPs), navigation devices, wearable devices, smart bracelets, pedometers, and fixed terminal devices such as digital TVs and desktop computers.

[0306] Although the communication device described above is exemplified by a terminal device or a network device, the scope of the communication device described in this application is not limited to the aforementioned terminal device or network device, and the structure of the communication device is not limited to FIG10. The communication device may be a standalone device or may be part of a larger device.

[0307] This application also provides a communication system, including: a terminal device as described in any of the above embodiments; and a network device as described in any of the above embodiments.

[0308] This application also provides a communication device, including a memory and a processor. The memory stores a processing program, and when the processing program is executed by the processor, it implements the steps of the processing method in any of the above embodiments.

[0309] The communication equipment mentioned in this application may be a terminal device (such as a mobile phone), a network device (such as a base station), or a chip (such as a SOC or a baseband chip with communication functions). The specific meaning needs to be clarified according to the context.

[0310] This application also provides a computer-readable storage medium storing a processing program, which, when executed by a processor, implements the steps of the processing method in any of the above embodiments.

[0311] In the embodiments of the communication device and computer-readable storage medium provided in this application, all technical features of any of the above-described processing method embodiments may be included. The extended and explanatory content of the specification is basically the same as that of the embodiments of the above methods, and will not be repeated here.

[0312] This application also provides a computer program product, which includes computer program code. When the computer program code is run on a computer, it causes the computer to perform the methods described in the various possible implementations above. This application also provides a chip, including a memory and a processor. The memory stores a computer program, and the processor retrieves and runs the computer program from the memory, causing a device with the chip installed to perform the methods described in the various possible implementations above.

[0313] It is understood that the above scenarios are merely examples and do not constitute a limitation on the application scenarios of the technical solutions provided in the embodiments of this application. The technical solutions of this application can also be applied to other scenarios. For example, those skilled in the art will know that with the evolution of system architecture and the emergence of new business scenarios, the technical solutions provided in the embodiments of this application are also applicable to similar technical problems. The sequence numbers of the embodiments of this application above are merely for description and do not represent the superiority or inferiority of the embodiments. The steps in the method of the embodiments of this application can be adjusted, merged, and deleted according to actual needs. The units in the device of the embodiments of this application can be merged, divided, and deleted according to actual needs. In this application, the same or similar terms, concepts, technical solutions, and / or application scenario descriptions are generally described in detail only when they appear for the first time. When they appear again later, they are generally not repeated for the sake of brevity. When understanding the technical solutions of this application, for the same or similar terms, concepts, technical solutions, and / or application scenario descriptions that are not described in detail later, you can refer to their previous related detailed descriptions. In this application, the descriptions of each embodiment have their own emphasis. For the parts that are not described or recorded in detail in a certain embodiment, you can refer to the relevant descriptions of other embodiments. The technical features of the present application can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of the present application.

[0314] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) as described above, and includes several instructions to cause a terminal device (which may be a mobile phone, computer, server, controlled terminal device, or network device, etc.) to execute the methods of each embodiment of this application. In the above embodiments, they can be implemented entirely or partially by software, hardware, firmware, or any combination thereof. When implemented using software, they can be implemented entirely or partially in the form of a computer program product. A computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, all or part of the flow or function according to the embodiments of this application is generated. The computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. Computer instructions can be stored in a storage medium or transmitted from one storage medium to another. For example, computer instructions can be transmitted from one website, computer, server, or data center to another via wired (e.g., coaxial cable, fiber optic, digital subscriber line) or wireless (e.g., infrared, wireless, microwave, etc.) means. The storage medium can be any available medium accessible to a computer or a data storage device such as a server or data center that integrates one or more available media. Available media can be magnetic media (e.g., floppy disks, memory disks, magnetic tapes), optical media (e.g., DVDs), or semiconductor media (e.g., solid-state drives (SSDs)). The above are merely preferred embodiments of this application and do not limit the patent scope of this application. Any equivalent structural or procedural transformations made based on the content of this specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A processing method, wherein, Applied to terminal devices, including the following steps: S2: In response to receiving the time advance value of at least one candidate cell, start or restart the time advance timer.

2. The method as described in claim 1, wherein, It also includes at least one of the following: At least one candidate cell's timing advance value is carried in the media access control element; At least one candidate cell includes all candidate cells; At least one candidate cell's time advance value is not the maximum value; The time advance timer includes the effective time advance timer.

3. The method as described in claim 1 or 2, wherein, It also includes at least one of the following: Based on physical downlink control channel commands, a random access preamble is sent to at least one candidate cell; In response to at least one candidate cell meeting the conditional LTM execution conditions, a conditional LTM cell handover is triggered. In response to the fulfillment of the Conditional LTM execution conditions, the Radio Resource Control (RRC) sends a Conditional LTM cell handover request and / or candidate cell identifier to the Media Access Control (MAC). The media access control layer determines whether to apply the time advance value based on the time advance timer; The Layer 1 measurement results are reported to the network equipment so that the network equipment can determine the candidate cells for early uplink synchronization based on the Layer 1 measurement results.

4. The method of claim 3, wherein, It also includes at least one of the following: The time advance timer is used to determine whether to apply the time advance value of at least one candidate cell during conditional LTM cell handover. Conditional LTM cell handover requests and / or candidate cell identifiers are used to trigger the Media Access Control layer to apply a time advance value for at least one candidate cell. The advance timer is used for at least one candidate cell; When the time advance timer is running, the time advance value is applied; If the advance timer is not running, a random access procedure is initiated. When the terminal device applies the target cell's time advance value, it is considered that a handover of a LTM cell without random access conditions is in progress.

5. A processing method, wherein, Applied to network devices, including the following steps: S1: Send the timing advance value of at least one candidate cell so that the terminal device can receive the timing advance value of at least one candidate cell and start or restart the timing advance timer.

6. The method of claim 5, wherein, It also includes at least one of the following: At least one candidate cell's timing advance value is carried in the media access control element; At least one candidate cell includes all candidate cells; At least one candidate cell's advance time value is not the maximum value; The time advance timer includes the effective time advance timer.

7. The method of claim 5 or 6, wherein, It also includes at least one of the following: The terminal device sends a random access preamble to at least one candidate cell based on physical downlink control channel commands. The terminal device triggers conditional LTM cell handover in response to at least one candidate cell meeting the conditional LTM execution conditions. In response to the conditional LTM execution condition being met, the terminal device sends a conditional LTM cell handover request and / or candidate cell identifier to the media access control layer. The media access control layer determines whether to apply the time advance value based on the time advance timer. Network devices determine candidate cells for early uplink synchronization based on the Layer 1 measurement results reported by terminal devices.

8. The method of claim 7, wherein, It also includes at least one of the following: The time advance timer is used to determine whether to apply the time advance value of at least one candidate cell during conditional LTM cell handover. Conditional LTM cell handover requests and / or candidate cell identifiers are used to trigger the Media Access Control layer to apply a time advance value for at least one candidate cell. The advance timer is used for at least one candidate cell; When the time advance timer is running, the terminal device applies the time advance value; If the advance timer is not running, the terminal device initiates a random access procedure; When the terminal device applies the target cell's time advance value, it is considered that a handover of a LTM cell without random access conditions is in progress.

9. A communication device, wherein, include: A memory, a processor, and a processing program stored in the memory and executable on the processor, the processing program being executed by the processor to implement the steps of the processing method as described in any one of claims 1 to 8.

10. A computer-readable storage medium, wherein, The computer-readable storage medium stores a computer program, which is executed by a processor to implement the steps of the processing method as described in any one of claims 1 to 8.

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