Processing method, communication device and storage medium

Abstract

The invention provides a processing method, communication equipment and a storage medium. The processing method comprises the following steps: reserving and / or maintaining time advance information according to a first strategy; through the technical scheme provided by the invention, the processing mechanism of the time advance information can be perfected, so that the reduction of the cell switching delay and / or the reduction of the service interruption duration is supported.

Description

Technical Field

[0001] This application relates to the field of communication technologies, and in particular, to a processing method, a communication device, and a storage medium. Background Art

[0002] Timing Advance (TA) is a key technology for uplink synchronization in a cellular communication system. By obtaining the timing advance information of a candidate cell in advance, faster cell handover can be achieved, and the interruption delay of cell handover can be reduced.

[0003] In the process of conceiving and implementing this application, the inventors found that there are at least the following problems: In the existing protocol, during the conditional LTM (L1 / L2 Triggered Mobility) handover process, the processing mechanism of the timing advance information obtained in advance is not perfect, which may be disadvantageous for reducing the cell handover delay and / or reducing the service interruption duration. Therefore, it is necessary to improve the processing mechanism of the timing advance information.

[0004] The foregoing description is for the purpose of providing general background information and does not necessarily constitute prior art. Summary of the Invention

[0005] The main purpose of this application is to provide a processing method, a communication device, and a storage medium, aiming to improve the processing mechanism of timing advance information, so as to support reducing the cell handover delay and / or support reducing the service interruption duration.

[0006] A processing method provided by this application can be applied to a terminal device (such as a mobile phone), and includes the steps:

[0007] S2: Retain and / or maintain the timing advance information according to a first policy.

[0008] Optionally, step S2 includes at least one of the following:

[0009] Retain and / or maintain the timing advance information based on a conditional LTM cell handover request and / or a first candidate cell identifier;

[0010] Retain and / or maintain the timing advance information based on the timing advance indication information;

[0011] Retain and / or maintain the timing advance information based on the terminal device's autonomous retention and / or maintenance of the timing advance information.

[0012] Optionally, the conditional LTM cell handover request and / or the first candidate cell identifier are sent from the radio resource control layer to the media access control layer.

[0013] Optionally, the timing advance indication information is carried in the LTM candidate timing advance command MAC CE.

[0014] Optionally, the method further includes at least one of the following:

[0015] Starting a timing advance timer of at least one candidate cell according to a long term measurement (LTM) candidate timing advance command MAC CE;

[0016] When performing media access control reset and / or meeting the conditions for LTM cell handover, retaining and / or maintaining timing advance information;

[0017] Sending a retained timing advance indication and / or a second candidate cell identifier to a network device.

[0018] Optionally, retaining and / or maintaining timing advance information includes at least one of the following:

[0019] Maintaining the operation of the timing advance timer of at least one candidate cell;

[0020] Regarding the timing advance timer of at least one candidate cell as not timing out;

[0021] Retaining and / or maintaining the timing advance value of at least one candidate cell.

[0022] Optionally, the timing advance timer of at least one candidate cell is carried in the conditional LTM configuration information.

[0023] Optionally, the retained timing advance indication and / or the second candidate cell identifier are generated or determined according to the terminal device independently retaining and / or maintaining the timing advance information.

[0024] This application also provides a processing method, which can be applied to a network device (such as a base station), including steps:

[0025] S1: Sending conditional LTM configuration information to enable a terminal device to retain and / or maintain timing advance information according to a first policy.

[0026] Optionally, the terminal device retaining and / or maintaining the timing advance information according to the first policy includes at least one of the following:

[0027] The terminal device retaining and / or maintaining the timing advance information based on a conditional LTM cell handover request and / or a first candidate cell identifier;

[0028] The terminal device retaining and / or maintaining the timing advance information based on timing advance indication information;

[0029] The terminal device retaining and / or maintaining the timing advance information based on the terminal device independently retaining and / or maintaining the timing advance information.

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

[0031] The conditional LTM configuration information carries a timing advance timer for at least one candidate cell;

[0032] The conditional LTM cell handover request and / or the first candidate cell identifier are sent by the terminal device from the radio resource control layer to the media access control layer;

[0033] The timing advance indication information is carried in the LTM candidate timing advance command MAC CE;

[0034] When the terminal device performs media access control reset and / or meets the conditions for LTM cell handover, it retains and / or maintains the timing advance information;

[0035] The terminal device starts the timing advance timer for at least one candidate cell according to the LTM candidate timing advance command MAC CE;

[0036] Receive the retained timing advance indication and / or the second candidate cell identifier.

[0037] Optionally, the terminal device retains and / or maintains the timing advance information, including at least one of the following:

[0038] The terminal device maintains the timing advance timer for at least one candidate cell running;

[0039] The terminal device considers that the timing advance timer for at least one candidate cell has not timed out;

[0040] The terminal device retains and / or maintains the timing advance value for at least one candidate cell.

[0041] This application also provides a communication device, including: a memory, a processor, and a processing program stored on the memory and executable on the processor. When the processing program is executed by the processor, it implements the steps of any of the above-mentioned processing methods.

[0042] The communication device in this application can be a terminal device (such as a mobile phone), a network device (such as a base station), or a chip (such as an SOC or a baseband chip with communication functions, etc.). Specifically, what it refers to needs to be clarified according to the context.

[0043] This application also provides a computer-readable storage medium, on which a processing program is stored. When the processing program is executed by a processor, it implements the steps of any of the above-mentioned processing methods.

[0044] The technical solution of this application, by retaining and / or maintaining the timing advance information according to the first strategy, can improve the processing mechanism of the timing advance information, thereby supporting reducing the cell handover delay and / or supporting reducing the service interruption duration. Description of the Drawings

[0045] The accompanying drawings here are incorporated into the description and form a part of this description, showing embodiments consistent with this application, and are used together with the description to explain the principles of this application. To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, for those of ordinary skill in the art, without creative efforts, other accompanying drawings can also be obtained based on these drawings.

[0046] Figure 1 Schematic diagram of the hardware structure of a mobile terminal for implementing various embodiments of this application;

[0047] Figure 2 Schematic diagram of a communication network system architecture provided by an embodiment of this application;

[0048] Figure 3 Schematic diagram of the hardware structure of a controller 140 provided by this application;

[0049] Figure 4 Schematic diagram of the hardware structure of a network node 150 provided by this application;

[0050] Figure 5 Schematic flowchart of a processing method shown according to the first embodiment;

[0051] Figure 6 Schematic diagram of an interaction timing shown according to the second embodiment;

[0052] Figure 7 Schematic flowchart of a processing flow shown according to the fifth embodiment;

[0053] Figure 8 Schematic flowchart of a processing method shown according to the sixth embodiment;

[0054] Figure 9 Schematic diagram of the structure of a processing device provided by an embodiment of this application Figure 1 ;

[0055] Figure 10 Schematic diagram of the structure of a processing device provided by an embodiment of this application Figure 2 ;

[0056] Figure 11 Schematic diagram of the structure of a communication device provided by an embodiment of this application.

[0057] The realization of the objectives of this application, functional features, and advantages will be further described in conjunction with the embodiments with reference to the accompanying drawings. Through the above accompanying drawings, the clear embodiments of this application have been shown, and there will be more detailed descriptions hereinafter. These accompanying drawings and text descriptions are not intended to limit the scope of the concept of this application in any way, but to explain the concept of this application to those skilled in the art by referring to specific embodiments. Detailed implementation manners

[0058] Exemplary embodiments will be described in detail herein, and examples thereof are shown in the accompanying drawings. When the following description refers to the accompanying drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The implementation manners described in the following exemplary embodiments do not represent all implementation manners consistent with the present application. On the contrary, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims.

[0059] It should be noted that, in this document, the term "comprising", "including" or any other variation thereof is intended to cover a non-exclusive inclusion, such that a process, method, article or device comprising a series of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising one..." does not exclude the existence of additional identical elements in the process, method, article or device comprising that element, and / or, components, features, elements with the same name in different embodiments of the present application may have the same meaning or different meanings, and their specific meanings need to be determined by their explanations in the specific embodiments or further in combination with the context in the specific embodiments.

[0060] It should be understood that although terms such as first, second, and third may be used herein to describe various information, such information should not be limited to these terms. These terms are only used to distinguish information of the same type from each other. For example, without departing from the scope of this document, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Depending on the context, the word "if" as used herein may be interpreted as "when" or "while" or "in response to determining". Furthermore, as used herein, the singular forms "a", "an", and "the" are also intended to 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 features, steps, operations, elements, components, items, kinds, and / or groups, but do not preclude 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" used in this application may be interpreted inclusively, or mean any one or any combination. 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", and again, "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". An exception to this definition occurs only when the combination of elements, functions, steps, or operations is inherently mutually exclusive in some way.

[0061] It should be understood that although the steps in the flowchart in the embodiments of this application are shown in sequence according to the indication of the arrows, these steps are not necessarily executed in the order indicated by the arrows. Unless there is a clear indication in this document, the execution of these steps has no strict order limitation and can be executed in other orders. Moreover, at least a part of the steps in the figure may include multiple sub-steps or multiple stages, and these sub-steps or stages are not necessarily executed at the same time, but can be executed at different times, and their execution order is not necessarily sequential, but can be executed alternately or in turn with at least a part of other steps or sub-steps or stages of other steps.

[0062] Depending on the context, the words "if", "when" as used herein may be interpreted as "when" or "while" or "in response to determining" or "in response to detecting". Similarly, depending on the context, the phrase "if determined" or "if detecting (stated condition or event)" may be interpreted as "when determined" or "in response to determining" or "when detecting (stated condition or event)" or "in response to detecting (stated condition or event)".

[0063] It should be noted that in this text, step codes such as S1 and S2 are adopted. The purpose is to more clearly and briefly express the corresponding content, and it does not constitute a substantial limitation in terms of sequence. Those skilled in the art may execute S2 first and then S1 during specific implementation, etc., but all of these should be within the protection scope of this application.

[0064] It should be understood that the specific embodiments described herein are only used to explain this application and are not used to limit this application.

[0065] In subsequent descriptions, suffixes such as "module", "component", or "unit" used to represent elements are only for the convenience of explaining this application, and they have no specific meaning in themselves. Therefore, "module", "component", or "unit" can be used interchangeably.

[0066] The communication device in this application can be a terminal device (such as a mobile phone), a network device (such as a base station), or a chip (such as an SOC or a baseband chip with communication functions, etc.). Specifically, what it refers to needs to be clarified according to the context.

[0067] The terminal device can be implemented in various forms. For example, the terminal device described in this application can include intelligent terminal devices such as mobile phones, tablet computers, laptop computers, 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.

[0068] In subsequent descriptions, a mobile terminal will be used as an example for illustration. Those skilled in the art will understand that except for components specifically for mobile purposes, the structure according to the embodiments of this application can also be applied to fixed-type terminal devices.

[0069] Please refer to Figure 1 , which is a schematic diagram of the hardware structure of a mobile terminal for implementing various embodiments of this application. The mobile terminal 100 may include components such as 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. Those skilled in the art can understand that Figure 1 the mobile terminal structure shown in

[0070] The following will specifically introduce each component of the mobile terminal in conjunction with Figure 1 :

[0071] The radio frequency unit 101 can be used for receiving and sending signals during information reception or call processes. Specifically, after receiving the downlink information from the base station, it is sent to the processor 110 for processing; in addition, the uplink data is sent to the base station. Generally, the radio frequency unit 101 includes, but is not limited to, antennas, 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 with the network and other devices through wireless communication. The above wireless communication can 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, etc.

[0072] WiFi belongs to short-range wireless transmission technology. The mobile terminal can help users receive and send emails, browse the web, and access streaming media, etc. through the WiFi module 102, which provides users with wireless broadband Internet access. Although Figure 1 the WiFi module 102 is shown, it can be understood that it does not belong to an essential component of the mobile terminal and can be completely omitted within the scope of not changing the essence of the invention as needed.

[0073] The audio output unit 103 can convert the audio data received by the radio frequency unit 101 or the WiFi module 102 or stored in the memory 109 into an audio signal and output it as sound when the mobile terminal 100 is in modes such as a call signal reception mode, a call mode, a recording mode, a voice recognition mode, a broadcast reception mode, and so on. Moreover, the audio output unit 103 can also provide an audio output related to a specific function executed by the mobile terminal 100 (for example, a call signal reception sound, a message reception sound, etc.). The audio output unit 103 may include a speaker, a buzzer, and so on.

[0074] The A / V input unit 104 is used to receive an audio or video signal. The A / V input unit 104 may include a Graphics Processing Unit (GPU) 1041 and a microphone 1042. The graphics processor 1041 processes the image data of a still picture or a video obtained by an image capturing device (such as a camera) in a video capture mode or an image capture mode. The processed image frame can be displayed on the display unit 106. The processed image frame can be stored in the memory 109 (or other storage media) or transmitted via the radio frequency unit 101 or the WiFi module 102. The microphone 1042 can receive sound (audio data) via the microphone 1042 in operating modes such as a phone call mode, a recording mode, a voice recognition mode, and so on, and can process such sound into audio data. The processed audio (voice) data can be output in a format that can be transmitted to a mobile communication base station via the radio frequency unit 101 in the case of a phone call mode. The microphone 1042 can implement various types of noise cancellation (or suppression) algorithms to cancel (or suppress) the noise or interference generated during the reception and transmission of the audio signal.

[0075] The mobile terminal 100 further 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 brightness of the ambient light, and the proximity sensor can turn off the display panel 1061 and / or the backlight when the mobile terminal 100 is moved to the ear. As a kind of motion sensor, the accelerometer sensor can detect the magnitude of acceleration in all directions (generally three axes), and can detect the magnitude and direction of gravity when stationary, and can be used for applications that identify the posture of the mobile phone (such as horizontal and vertical screen switching, related games, magnetometer posture calibration), vibration recognition related functions (such as a pedometer, a knock), etc.; as for other sensors that the mobile phone can also be configured with, such as a fingerprint sensor, a pressure sensor, an iris sensor, a molecular sensor, a gyroscope, a barometer, a hygrometer, a thermometer, an infrared sensor, etc., they will not be elaborated here.

[0076] 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, and the display panel 1061 may be configured in the form of a liquid crystal display (LCD), an organic light-emitting diode (OLED), etc.

[0077] The 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 controls of the mobile terminal. Optionally, the user input unit 107 may include a touch panel 1071 and other input devices 1072. The touch panel 1071, also known as a touch screen, can collect touch operations of the user thereon or nearby (such as operations of the user using a finger, a stylus, or any suitable object or accessory on or near the touch panel 1071), and drive corresponding connection devices according to a preset program. The touch panel 1071 may include two parts: a touch detection device and a touch controller. Optionally, the touch detection device detects the touch orientation of the user, detects the signal brought by the touch operation, and transmits the signal to the touch controller; the touch controller receives the touch information from the touch detection device, converts it into touch point coordinates, and then sends it to the processor 110, and can receive and execute commands sent by the processor 110. And / or, the touch panel 1071 can be implemented in multiple types such as resistive, capacitive, infrared, and surface acoustic wave. In addition to the touch panel 1071, the user input unit 107 may further include other input devices 1072. Optionally, the other input devices 1072 may include, but are not limited to, one or more of a physical keyboard, function keys (such as volume control keys, switch keys, etc.), a trackball, a mouse, a joystick, etc., and specific details are not limited here.

[0078] Optionally, the touch panel 1071 may cover the display panel 1061. After the touch panel 1071 detects a touch operation thereon or nearby, it transmits it to the processor 110 to determine the type of touch event. Subsequently, the processor 110 provides a corresponding visual output on the display panel 1061 according to the type of touch event. Although in Figure 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 may be integrated to realize the input and output functions of the mobile terminal, and specific details are not limited here.

[0079] The interface unit 108 serves as an interface through which at least one external device can be connected to the 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. The interface unit 108 can be used to receive inputs from the external device (such as data information, power, etc.) and transmit the received inputs to one or more components within the mobile terminal 100 or can be used to transfer data between the mobile terminal 100 and the external device.

[0080] The memory 109 can be used to store software programs as well as various data. The memory 109 mainly includes a program storage area and a data storage area. Optionally, the program storage area can store an operating system, application programs required for at least one function (such as a sound playback function, an image playback function, etc.); the data storage area can store data created according to the use of the mobile phone (such as audio data, phone book, etc.). And / or, the memory 109 can include a high-speed random access memory and can also include a non-volatile memory, such as at least one magnetic disk storage device, a flash memory device, or other volatile solid-state storage devices.

[0081] The processor 110 is the control center of the mobile terminal, connecting various parts of the entire mobile terminal using various interfaces and lines. By running or executing the software programs and / or modules stored in the memory 109, and by calling the data stored in the memory 109, it performs various functions of the mobile terminal and processes data, thereby monitoring the mobile terminal as a whole. The processor 110 can include one or more processing units; preferably, the processor 110 can integrate an application processor and a modem processor. Optionally, the application processor mainly processes the operating system, user interface, and application programs, etc., and the modem processor mainly processes wireless communication. It can be understood that the above-mentioned modem processor may not be integrated into the processor 110.

[0082] The mobile terminal 100 can also include a power supply 111 (such as a battery) for powering each component. Preferably, the power supply 111 can be logically connected to the processor 110 through a power management system, thereby implementing functions such as management of charging, discharging, and power consumption management through the power management system.

[0083] Although Figure 1 not shown, the mobile terminal 100 can also include a Bluetooth module, etc., which will not be elaborated here.

[0084] To facilitate understanding of the embodiments of the present application, the communication network system on which the mobile terminal of the present application is based will be described below.

[0085] Please refer toFigure 2 , Figure 2 This is an architecture diagram of a communication network system provided by an embodiment of the present application. The communication network system is an NR (New Radio) system of the Universal Mobile Telecommunications 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 an operator's IP service 204 that are communicatively connected in sequence.

[0086] Optionally, the UE 201 may be the above-mentioned terminal device 100, which will not be elaborated here.

[0087] The E-UTRAN 202 includes an eNodeB 2021 and other eNodeBs 2022, etc. Optionally, the eNodeB 2021 may be connected to other eNodeBs 2022 through a backhaul (such as an X2 interface), and the eNodeB 2021 is connected to the EPC 203. The eNodeB 2021 can provide access for the UE 201 to the EPC 203.

[0088] The EPC 203 may include an MME (Mobility Management Entity) 2031, an HSS (Home Subscriber Server) 2032, other MMEs 2033, an SGW (Serving Gate Way) 2034, a PGW (PDN Gate Way) 2035, and a PCRF (Policy and Charging Rules Function) 2036, etc. Optionally, the MME 2031 is a control node that processes the signaling between the UE 201 and the EPC 203 and provides bearer and connection management. The HSS 2032 is used to provide some registers to manage functions such as a home location register (not shown in the figure) and stores some user-specific information such as service characteristics and data rates. All user data can be sent through the SGW 2034. The PGW 2035 can provide IP address allocation for the UE 201 and other functions. The PCRF 2036 is a policy and charging control policy decision point for service data flows and IP bearer resources, and it selects and provides available policy and charging control decisions for a policy and charging enforcement function unit (not shown in the figure).

[0089] The IP service 204 may include the Internet, an intranet, an IMS (IP Multimedia Subsystem), or other IP services, etc.

[0090] Although the above has been introduced by taking the LTE system as an example, those skilled in the art should be aware that this application is not only applicable to the LTE system, but also applicable to other wireless communication systems, such as GSM, CDMA2000, WCDMA, TD-SCDMA, 5G, and future new network systems (such as 6G), etc., which are not limited here.

[0091] Figure 3 This is a schematic diagram of the hardware structure of a controller 140 provided by 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 elaborated here.

[0092] Optionally, the above controller further includes a communication interface 1403, and this communication interface 1403 can be connected to the processor 1402 through a bus 1404. The processor 1402 can control the communication interface 1403 to implement the receiving and sending functions of the controller 140.

[0093] Figure 4 This is a schematic diagram of the hardware structure of a network node 150 provided by 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 first embodiment of the above method. The implementation principle and beneficial effects are similar, and will not be elaborated here.

[0094] Optionally, the above controller further includes a communication interface 1503, and this communication interface 1503 can be connected to the processor 1502 through a bus 1504. The processor 1502 can control the communication interface 1503 to implement the receiving and sending functions of the network node 150.

[0095] The above integrated modules implemented in the form of software function modules can be stored in a computer-readable storage medium. The above software function modules are stored in a storage medium, including several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor (English: processor) to execute some steps of the methods in various embodiments of this application.

[0096] In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented using software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the processes or functions according to the embodiments of the present application are generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. The computer instructions can be stored in a storage medium or transmitted from one storage medium to another. For example, the computer instructions can be transmitted from a website, computer, server, or data center to another website, computer, server, or data center by wire (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.). The storage medium can be any available medium that the computer can access or a data storage device such as a server or data center that includes one or more integrated available media. The available medium can be a magnetic medium (such as a floppy disk, hard disk, magnetic tape), an optical medium (such as a DVD), or a semiconductor medium (such as a solid state disk (SSD), etc.).

[0097] Based on the above mobile terminal hardware structure and communication network system, various embodiments of the present application are proposed.

[0098] Technical terms involved in the embodiments of the present application:

[0099] BM: Beam Management, beam management;

[0100] CG: Configured Grant, configured scheduling;

[0101] CLTM: Conditional L1 / L2 Triggered Mobility, conditional layer one and layer two triggered mobility;

[0102] HARQ-ACK: Hybrid Automatic Repeat reQuest-ACKnowledgement, hybrid automatic repeat request acknowledgement;

[0103] L1: Layer 1, layer one;

[0104] L2: Layer 2, layer two;

[0105] LTM: L1 / L2 Triggered Mobility, layer one and layer two triggered mobility;

[0106] MAC CE: Media Access Control Control Element, Media Access Control Element;

[0107] MR: Measurement Report, Measurement Report;

[0108] PDCCH: Physical Downlink Control CHannel, Physical Downlink Control Channel;

[0109] PUCCH: Physical Uplink Control CHannel, Physical Uplink Control Channel;

[0110] PUSCH: Physical Downlink Shared CHannel, Physical Uplink Shared Channel;

[0111] RRC: Radio Resource Control, Radio Resource Control;

[0112] RACH-Less: Random Access Free;

[0113] RACH-Base: Random Access Based;

[0114] TA: Timing Advance, Timing Advance;

[0115] TAT: Timing Advance Timer, Timing Advance Timer;

[0116] TCI: Transmission Configuration Indicator, Transmission Configuration Indicator.

[0117] The First Embodiment

[0118] Refer to Figure 5 , Figure 5 is a schematic flowchart of the processing method shown according to the first embodiment. The processing method of the embodiments of the present application can be applied to a terminal device (such as a mobile phone) and includes the steps:

[0119] S2: Retain and / or maintain the timing advance information according to the first policy.

[0120] Optionally, during the conditional LTM cell handover process, there is still a lack of a clear mechanism for processing the timing advance information of candidate cells. If the timing advance synchronization process is re-executed after the conditional LTM cell handover is completed, it is likely to cause signaling overhead, and / or, in subsequent conditional LTM handovers, when the conditional LTM cell handover that requires basic random access is needed due to the lack of timing advance information of candidate cells, it is likely to cause cell handover delay and / or extend the service interruption duration. In the embodiments of the present application, a solution for retaining and / or maintaining timing advance information is proposed according to the first policy.

[0121] Optionally, retain and / or maintain the timing advance information based on the conditional LTM cell handover request and / or the first candidate cell identifier.

[0122] Optionally, the conditional LTM cell handover request and / or the first candidate cell identifier are sent from the radio resource control layer to the media access control layer.

[0123] Optionally, retain and / or maintain the timing advance information based on the timing advance indication information.

[0124] Optionally, the timing advance indication information is carried in the LTM candidate timing advance command MAC CE.

[0125] Optionally, retain and / or maintain the timing advance information based on the terminal device's autonomous retention and / or maintenance of the timing advance information.

[0126] Optionally, the terminal device starts the timing advance timer of at least one candidate cell according to the LTM candidate timing advance command MAC CE.

[0127] Optionally, the timing advance timer of at least one candidate cell is carried in the conditional LTM configuration information.

[0128] Optionally, the terminal device retains and / or maintains the timing advance information when performing media access control reset and / or meeting the conditions for conditional LTM cell handover.

[0129] Optionally, the terminal device sends a timing advance retention indication and / or a second candidate cell identifier to the network device.

[0130] Optionally, the timing advance retention indication and / or the second candidate cell identifier are generated or determined according to the terminal device's autonomous retention and / or maintenance of the timing advance information.

[0131] Optionally, the timing advance retention indication and / or the second candidate cell identifier are used to enable the network device to know the candidate cell for which the terminal device performs retention and / or maintenance of the timing advance information.

[0132] Optionally, the timing advance information is retained and / or maintained, including at least one of keeping the timing advance timer of at least one candidate cell running, considering the timing advance timer of at least one candidate cell not timed out, and retaining and / or maintaining the timing advance value of at least one candidate cell.

[0133] Through the technical solution of this embodiment, specifically by retaining and / or maintaining the timing advance information according to the first policy, the processing mechanism of the timing advance information can be improved. For example, the processing method of the timing advance information during the LTM cell handover process is clarified, thereby supporting reduction of signaling overhead, and / or supporting reduction of cell handover delay, and / or supporting reduction of service interruption duration.

[0134] Second Embodiment

[0135] Referring to Figure 6 , Figure 6 which is the interactive timing diagram shown according to the second embodiment. As Figure 6 shown, based on the foregoing first embodiment of the present application, the processing method further includes: the terminal device reports a measurement report to the network device, and the network device sends a radio resource control reconfiguration signaling containing conditional LTM configuration information to the terminal device.

[0136] Optionally, the terminal device reports the measurement report to the network device (such as the source cell).

[0137] Optionally, the measurement report is a layer 3 measurement report (MR, Measurement Report).

[0138] Optionally, the source cell obtains the conditional LTM candidate cell configuration, including conditional LTM configuration information and / or conditional LTM execution conditions.

[0139] Optionally, the conditional LTM candidate cell is an Intra-CU cell.

[0140] Optionally, the source cell generates conditional LTM configuration information, including at least one of a conditional LTM configuration identifier, a candidate cell conditional LTM configuration, and a candidate cell conditional LTM execution condition.

[0141] Optionally, the candidate cell conditional LTM execution condition includes a layer 1 measurement configuration and / or at least one layer 3 measurement configuration.

[0142] Optionally, the LTM measurement event is a layer 1 (L1, Layer 1) measurement event.

[0143] Optionally, the layer 1 measurement event includes at least one of the following:

[0144] Event LTM2: Beam of serving cell becomes worse than absolute threshold;

[0145] Event LTM3: Beam of candidate cell becomes amount of offset better than beam of serving cell;

[0146] Event LTM4: Beam of candidate cell becomes better than absolute threshold;

[0147] Event LTM5: Beam of serving cell becomes worse than absolute threshold1 AND Beam of candidate cell becomes better than another absolute threshold2;

[0148] Conditional measurement event A3: Neighbour becomes offset better than SpCell;

[0149] Conditional measurement event A5: SpCell becomes worse than threshold1 and neighbour becomes better than threshold2.

[0150] Optionally, Conditional measurement event A3 (CondEventA3) and / or Conditional measurement event A5 (CondEventA5) may refer to protocol TS 38.331 Release 18, 5.5.4.

[0151] Optionally, the layer 1 measurement event may be a beam management measurement event.

[0152] Optionally, the layer 1 measurement event may be a layer 1 and layer 2 mobility measurement event.

[0153] Optionally, the candidate cell condition LTM configuration includes at least one of the following: LTM candidate identity, LTM candidate configuration, conditional LTM candidate configuration, early uplink synchronization configuration, No reset identity, serving cell No reset identity, attemptLTM-Switch. For details, refer to Protocol TS 38.300 Release 18, 6.3.2 LTM Configuration.

[0154] Optionally, the candidate cell condition LTM configuration includes the serving cell LTM configuration and / or the candidate cell LTM configuration.

[0155] Optionally, the candidate cell condition LTM configuration includes at least one of the conditional LTM candidate identity, conditional LTM execution condition identity, layer 1 measurement event identity, and ltm-Candidate-TimeAlignmentTimer.

[0156] Optionally, the ltm-Candidate-TimeAlignmentTimer is used to maintain the time alignment information of the LTM candidate cell.

[0157] Optionally, the time alignment information of the LTM candidate cell is obtained through early uplink synchronization.

[0158] Optionally, a network device (such as the source cell) sends a radio resource control reconfiguration signaling to the terminal device.

[0159] Optionally, the radio resource control reconfiguration signaling carries the conditional LTM configuration.

[0160] Optionally, the terminal device stores the conditional LTM configuration and / or sets the conditional LTM execution condition.

[0161] Optionally, the terminal device sends a radio resource control reconfiguration complete signaling to the network device.

[0162] Optionally, the radio resource control reconfiguration complete signaling is used to respond to the radio resource control reconfiguration signaling sent by the network device.

[0163] Optionally, the terminal device evaluates the candidate cell according to the conditional LTM configuration.

[0164] Optionally, the terminal device evaluates whether there is a candidate cell that meets the execution condition according to the candidate cell condition LTM execution condition.

[0165] Optionally, the terminal device performs early downlink synchronization and / or early uplink synchronization.

[0166] Optionally, the terminal reports a layer 1 measurement report.

[0167] 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.

[0168] Optionally, when at least one candidate cell satisfies a layer-3 measurement event and / or a conditional layer-3 measurement event, the terminal device reports a layer-3 measurement report.

[0169] Optionally, the layer-1 measurement report is sent via a MAC CE, for example: event-triggered layer-1 measurement report MAC CE, etc. This application embodiment does not make specific limitations thereon.

[0170] Optionally, the MAC CE for sending the layer-1 measurement report carries at least one candidate cell measurement result and / or a candidate cell identifier. Optionally, the candidate cell identifier may refer to Protocol TS 38.300 Release 18, 6.3.2, for example: LTM candidate identifier (LTM-CandidateId).

[0171] Optionally, the layer-1 measurement report carries at least one candidate cell layer-1 measurement result.

[0172] Optionally, the layer-1 measurement report further includes a physical uplink control channel and / or a physical uplink shared channel report.

[0173] Optionally, the layer-1 measurement includes at least one of periodic measurement, aperiodic measurement, and semi-persistent measurement. For details, reference can be made to Protocol TS 38.214 Release 18, 5.2.1.4.

[0174] Optionally, the layer-1 measurement report includes at least one of a periodic report, an aperiodic report, and a semi-persistent measurement report. For details, reference can be made to Protocol TS 38.214 Release 18, 5.2.1.4.

[0175] Optionally, the network device and / or the serving cell trigger early downlink synchronization.

[0176] Optionally, the network device determines the candidate cell for early downlink synchronization by activating / deactivating the MAC CE through the candidate cell TCI state.

[0177] Optionally, the network device performs early uplink synchronization and / or early downlink synchronization in response to the measurement report reported by the terminal device when the conditional LTM execution condition is satisfied.

[0178] Optionally, the measurement report includes a layer-1 measurement report and / or a layer-3 measurement report.

[0179] Optionally, the network device and / or serving cell may trigger early downlink synchronization with reference to the protocol TS 38.321 Release 18, 5.18.36, 6.1.3.76.

[0180] Optionally, the network device and / or serving cell trigger early uplink synchronization.

[0181] Optionally, the network device and / or serving cell trigger early uplink synchronization with a candidate cell through a PDCCH order.

[0182] Optionally, the terminal device sends a random access preamble to the candidate cell according to the received PDCCH order.

[0183] Optionally, for the terminal device to perform early uplink synchronization with a candidate cell, reference can be made to the protocol TS 38.321 Release 18, 5.1 and / or TS 38.213 Release 18, 8.21.

[0184] Optionally, the network device (such as the source cell) sends LTM candidate cell timing advance information to the terminal device, and / or the terminal device starts an LTM candidate timing advance timer.

[0185] Optionally, the LTM candidate cell timing advance information is used for conditional LTM cell handover or random access-free conditional LTM cell handover.

[0186] Optionally, the LTM candidate cell timing advance information is carried by a MAC CE, such as: LTM Candidate Timing Advance Command MAC CE, etc., which is not specifically limited in the embodiments of the present application.

[0187] Optionally, the LTM Candidate Timing Advance Command MAC CE carries the LTM candidate cell timing advance information and / or LTM candidate identifier of the candidate cell.

[0188] Optionally, the LTM candidate cell timing advance information is a timing advance value or an absolute timing advance value.

[0189] Optionally, the LTM Candidate Timing Advance Command MAC CE carries the LTM candidate cell timing advance information and / or LTM candidate identifier of at least one candidate cell.

[0190] Optionally, the LTM Candidate Timing Advance Command MAC CE received by the terminal device starts the LTM candidate timing advance timer.

[0191] Optionally, the terminal device receives at least one LTM Candidate Timing Advance Command MAC CE and starts at least one LTM candidate timing advance timer.

[0192] Optionally, the terminal device starts at least one LTM candidate timing advance timer according to the received LTM candidate timing advance command MAC CE.

[0193] Optionally, the terminal device starts the LTM candidate timing advance timer of the corresponding candidate cell according to the LTM candidate identifier and / or the timing advance value.

[0194] Optionally, the LTM candidate timing advance timer of at least one candidate cell is used to maintain and / or determine whether the timing advance information of at least one candidate cell remains valid.

[0195] Optionally, it is determined whether the corresponding LTM candidate timing advance timer is running to judge whether its timing advance value is valid through the LTM candidate identifier. For example, when the LTM candidate timing advance timer is running, it means that the timing advance value is valid; and / or when the LTM candidate timing advance timer is not running and / or times out, it means that the timing advance value is invalid and / or ineffective.

[0196] Through the technical solution of this embodiment, specifically, the terminal device reports a measurement report to the network device, the network device sends a radio resource control reconfiguration signaling containing conditional LTM configuration information to the terminal device, and the terminal device starts at least one LTM candidate timing advance timer according to the received LTM candidate timing advance command MAC CE. Furthermore, the timing advance information of the corresponding candidate cell is processed through the LTM candidate cell timing advance timer, which can improve the processing mechanism of the timing advance information.

[0197] The third embodiment

[0198] Based on any of the foregoing embodiments of the present application, this embodiment further discloses a solution for the terminal device to retain and / or maintain timing advance information according to the first policy.

[0199] Optionally, the terminal device retains and / or maintains the timing advance information based on the timing advance indication information.

[0200] Optionally, the timing advance indication information is carried by the MAC CE, such as: LTM candidate timing advance command (LTMCandidate Timing Advance Command) MAC CE, etc.

[0201] Optionally, the timing advance indication information is used to indicate whether to release or retain the LTM candidate cell timing advance information. For example, when the indication information is "1", it means to retain and / or maintain the timing advance information; when the indication information is "0", it means to release and / or clear the timing advance information; or, when the indication information is "0", it means to retain and / or maintain the timing advance information, and when the indication information is "1", it means to release and / or clear the timing advance information.

[0202] Optionally, the timing advance indication information is represented by one bit.

[0203] Optionally, the timing advance indication information corresponds to the LTM candidate cell timing advance information of different candidate cells. For example: the LTM candidate cell timing advance information of one candidate cell corresponds to one timing advance indication information, and / or the LTM candidate cell timing advance information of at least one candidate cell corresponds to one timing advance indication information.

[0204] Optionally, the terminal device detaches from the source cell and applies the target cell configuration.

[0205] Optionally, when at least one candidate cell meets the candidate cell condition for LTM execution condition, perform detachment and synchronize with the target cell.

[0206] Optionally, when at least one candidate cell meets the candidate cell condition for LTM execution condition, trigger a conditional LTM cell handover.

[0207] Optionally, at least one candidate cell meets the candidate cell condition for LTM execution condition, including: meeting a layer 1 measurement event and / or meeting a layer 3 measurement event.

[0208] Optionally, the terminal device starts timer T304.

[0209] Optionally, timer T304 can be used to determine whether to initiate radio resource control re-establishment and / or determine whether a conditional LTM cell handover is completed.

[0210] Optionally, the terminal device retains and / or maintains the timing advance information according to the first policy when performing media access control reset and / or meeting the conditional LTM cell handover condition.

[0211] Optionally, the terminal device's execution of the conditional LTM handover process includes at least one of the following:

[0212] Perform MAC reset;

[0213] The RRC requests the lower layer to perform MAC reset;

[0214] The RRC layer requests the lower layer to perform conditional LTM handover;

[0215] The RRC layer requests the lower layer to perform conditional LTM handover and carries the candidate cell identifier;

[0216] The MAC layer receives the upper layer's request for conditional LTM handover;

[0217] The MAC layer receives the upper layer's request for conditional LTM handover and the candidate cell identifier.

[0218] Optionally, the candidate cell identifier includes a first candidate cell identifier.

[0219] Optionally, the terminal device retains and / or maintains timing advance information based on the conditional LTM cell handover request and / or the first candidate cell identifier, including at least one of the following:

[0220] Maintain the timing advance timer of at least one candidate cell running based on the conditional LTM cell handover request and / or the first candidate cell identifier;

[0221] Consider the timing advance timer of at least one candidate cell not timed out based on the conditional LTM cell handover request and / or the first candidate cell identifier;

[0222] Retain and / or maintain the timing advance value of at least one candidate cell based on the conditional LTM cell handover request and / or the first candidate cell identifier.

[0223] Optionally, maintaining the timing advance timer of at least one candidate cell running based on the conditional LTM cell handover request and / or the first candidate cell identifier includes: applying the corresponding candidate cell timing advance value according to the first candidate cell identifier, and maintaining the timing advance timers of other non-first candidate cell identifiers running continuously.

[0224] Optionally, considering the timing advance timer of at least one candidate cell not timed out based on the conditional LTM cell handover request and / or the first candidate cell identifier includes: applying the corresponding candidate cell timing advance value according to the first candidate cell identifier, and considering the timing advance timers of other non-first candidate cell identifiers not timed out.

[0225] Optionally, retaining and / or maintaining the timing advance value of at least one candidate cell based on the conditional LTM cell handover request and / or the first candidate cell identifier includes: applying the corresponding candidate cell timing advance value according to the first candidate cell identifier, and retaining and / or maintaining the timing advance values of other non-first candidate cell identifiers.

[0226] Optionally, the terminal device retains and / or maintains timing advance information based on the timing advance indication information, including at least one of the following:

[0227] Maintain the operation of the timing advance timer of at least one candidate cell based on the timing advance indication information;

[0228] Regard the timing advance timer of at least one candidate cell as not timing out based on the timing advance indication information;

[0229] Retain and / or maintain the timing advance value of at least one candidate cell based on the timing advance indication information.

[0230] Optionally, maintaining the operation of the timing advance timer of at least one candidate cell based on the timing advance indication information includes: applying the timing advance value of the candidate cell and maintaining the continuous operation of the timing advance timer according to the corresponding timing advance indication information, and / or, maintaining the continuous operation of the timing advance timer of other candidate cells according to the corresponding timing advance indication information.

[0231] Optionally, regarding the timing advance timer of at least one candidate cell as not timing out based on the timing advance indication information includes: applying the timing advance value of the candidate cell and maintaining the continuous non-timeout of the timing advance timer according to the corresponding timing advance indication information, and / or, maintaining the continuous non-timeout of the timing advance timer of other candidate cells according to the corresponding timing advance indication information.

[0232] Optionally, retaining and / or maintaining the timing advance value of at least one candidate cell based on the timing advance indication information includes: applying the timing advance value of the candidate cell and retaining the timing advance value according to the corresponding timing advance indication information, and / or, retaining the timing advance value of other candidate cells according to the corresponding timing advance indication information.

[0233] Optionally, the terminal device retains and / or maintains the timing advance information based on the timing advance information independently retained and / or maintained by the terminal device, including at least one of the following:

[0234] Maintain the operation of the timing advance timer of at least one candidate cell based on the timing advance information independently retained and / or maintained by the terminal device;

[0235] Regard the timing advance timer of at least one candidate cell as not timing out based on the timing advance information independently retained and / or maintained by the terminal device;

[0236] Retain and / or maintain the timing advance value of at least one candidate cell based on the timing advance information independently retained and / or maintained by the terminal device.

[0237] Optionally, maintaining the operation of the timing advance timer of at least one candidate cell includes at least one of the following:

[0238] Maintain the operation of at least one LTM candidate timing advance timer;

[0239] Maintain the operation of all LTM candidate timing advance timers;

[0240] Keep the LTM candidate timing advance timer determined according to the timing advance indication information running;

[0241] Keep the LTM candidate timing advance timer determined according to the candidate cell identity running.

[0242] Optionally, consider that the timing advance timer of at least one candidate cell has not timed out, including at least one of the following:

[0243] Consider that the other LTM candidate timing advance timers except the timing advance timer of the target cell have timed out;

[0244] Consider that at least one LTM candidate timing advance timer has not timed out or does not time out;

[0245] Consider that the LTM candidate timing advance timer determined according to the timing advance indication information has not timed out or does not time out;

[0246] Consider that the LTM candidate timing advance timer determined according to the candidate cell identity has not timed out or does not time out.

[0247] Optionally, retain and / or maintain the timing advance value of at least one candidate cell, including at least one of the following:

[0248] Retain and / or maintain the timing advance value of candidate cells other than the target cell;

[0249] Retain and / or maintain the timing advance value of at least one candidate cell determined according to the timing advance indication information;

[0250] Retain and / or maintain the timing advance value of at least one candidate cell determined according to the candidate cell identity.

[0251] Optionally, at least one candidate cell includes the target cell, for example: the cell that performs conditional LTM cell handover and / or the LTM candidate cell that meets the execution condition.

[0252] Optionally, when the timing advance timer of at least one candidate cell times out, it is considered that the timing advance value of at least one candidate cell has become invalid, and / or, release and / or clear the timing advance value of at least one candidate cell.

[0253] Optionally, when the timing advance timer of at least one candidate cell has not timed out or does not time out, it is considered that the timing advance value of at least one candidate cell has not become invalid, and / or, retain and / or maintain the timing advance value of at least one candidate cell.

[0254] Optionally, when the timing advance timer of at least one candidate cell has not timed out or continues to run, it implicitly means that the timing advance timers of other candidate cells are considered to have timed out or stopped running.

[0255] Optionally, when retaining and / or maintaining the timing advance value of at least one candidate cell, it implicitly indicates the release and / or clearing of the timing advance values of other LTM candidate cells.

[0256] Optionally, the terminal device independently retains and / or maintains the LTM candidate timing advance information of the corresponding candidate cell, for example: retaining and / or maintaining at least one LTM candidate timing advance information, and / or, retaining and / or maintaining all LTM candidate timing advance information.

[0257] Optionally, the terminal device independently considers that the candidate timing advance timer has timed out, for example: considering that at least one LTM candidate timing advance timer has not timed out or is not timed out, and / or, considering that all LTM candidate timing advance timers have not timed out or are not timed out, and / or, maintaining at least one LTM candidate timing advance timer running, and / or, maintaining all LTM candidate timing advance timers running.

[0258] Through the technical solution of this embodiment, specifically, by the terminal device retaining and / or maintaining the timing advance information according to the first policy, it can retain and / or maintain the timing advance information according to the timing advance indication information of the network device and / or during the handover process, and / or can independently retain and / or maintain the timing advance information, which can improve the processing mechanism of the timing advance information.

[0259] Fourth Embodiment

[0260] Based on any of the foregoing embodiments of the present application, this embodiment further discloses a solution for the terminal device to retain and / or maintain the timing advance information according to the first policy during the conditional LTM cell handover process.

[0261] Optionally, the terminal device initiates a random access procedure.

[0262] Optionally, when the terminal device does not have the timing advance value of the target cell and / or the timing advance value of the target cell is the maximum value (FFF), it initiates a random access procedure. Optionally, F is a hexadecimal value, its binary value is 1111, and its decimal value is 16.

[0263] Optionally, when the LTM candidate timing advance timer is not running and / or when the LTM candidate timing advance timer times out, it initiates a random access procedure and / or performs a conditional LTM cell handover based on the random access condition.

[0264] Optionally, after the terminal device completes the random access procedure, it stops timer T304.

[0265] Optionally, the terminal device completes the conditional LTM cell handover.

[0266] Optionally, the terminal device sends a radio resource control reconfiguration complete signaling according to the configuration scheduling.

[0267] Optionally, the terminal device sends a Radio Resource Control (RRC) reconfiguration complete signaling according to the uplink scheduling (UL Grant) in the random access response.

[0268] Optionally, the terminal device sends an RRC reconfiguration complete signaling to the target cell.

[0269] Optionally, when the terminal device performs a Long-Term Mobility (LTM) handover without random access and receives the first downlink and / or uplink data scheduling, it is considered that the conditional LTM handover is completed.

[0270] Optionally, the terminal device retains and / or maintains the timing advance information according to the first policy.

[0271] Optionally, the terminal device retains and / or maintains the timing advance information during the execution of the conditional LTM handover.

[0272] Optionally, the completion of the conditional LTM handover by the terminal device includes at least one of the following:

[0273] Sending the first uplink data;

[0274] Receiving a new downlink data scheduling and / or receiving a new uplink data scheduling;

[0275] Sending an RRC re-establishment complete signaling;

[0276] Regarding it as the completion of Random Access Channel - Less (RACH - Less);

[0277] Regarding it as the completion of the RACH - Less LTM cell handover or the conditional LTM cell handover;

[0278] Completing the Random Access Channel - Base (RACH - Base) procedure;

[0279] Optionally, sending the RRC re - establishment complete signaling includes receiving a Hybrid Automatic Repeat reQuest ACKnowledgement (HARQ ACK).

[0280] Optionally, the terminal device retains and / or maintains the timing advance information, including at least one of maintaining the timing advance timer of at least one candidate cell running, regarding the timing advance timer of at least one candidate cell as not timed out, and retaining and / or maintaining the timing advance value of at least one candidate cell.

[0281] Optionally, maintaining the timing advance timer of at least one candidate cell running includes at least one of the following:

[0282] Maintaining the timing advance timer of at least one LTM candidate running;

[0283] Maintaining the timing advance timers of all LTM candidates running;

[0284] Keep the LTM candidate timing advance timer determined according to the timing advance indication information running;

[0285] Keep the LTM candidate timing advance timer determined according to the candidate cell identifier running.

[0286] Optionally, consider that the timing advance timer of at least one candidate cell has not timed out, including at least one of the following:

[0287] Consider that the other LTM candidate timing advance timers except the timing advance timer of the target cell have timed out;

[0288] Consider that at least one LTM candidate timing advance timer has not timed out or is not timing out;

[0289] Consider that the LTM candidate timing advance timer determined according to the timing advance indication information has not timed out or is not timing out;

[0290] Consider that the LTM candidate timing advance timer determined according to the candidate cell identifier has not timed out or is not timing out.

[0291] Optionally, retain and / or maintain the timing advance value of at least one candidate cell, including at least one of the following:

[0292] Retain and / or maintain the timing advance value of other candidate cells except the target cell;

[0293] Retain and / or maintain the timing advance value of at least one candidate cell determined according to the timing advance indication information;

[0294] Retain and / or maintain the timing advance value of at least one candidate cell determined according to the candidate cell identifier.

[0295] Optionally, at least one candidate cell includes the target cell, for example: the cell that performs conditional LTM cell handover and / or the LTM candidate cell that meets the execution condition.

[0296] Optionally, when the timing advance timer of at least one candidate cell times out, it is considered that the timing advance value of at least one candidate cell has become invalid, and / or, release and / or clear the timing advance value of at least one candidate cell.

[0297] Optionally, when the timing advance timer of at least one candidate cell has not timed out or is not timing out, it is considered that the timing advance value of at least one candidate cell has not become invalid, and / or, retain and / or maintain the timing advance value of at least one candidate cell.

[0298] Optionally, when the timing advance timer of at least one candidate cell has not timed out or continues to run, it implicitly means that it is considered that the timing advance timers of other candidate cells have timed out or stopped running.

[0299] Optionally, when retaining and / or maintaining the timing advance value of at least one candidate cell, it implicitly indicates the release and / or clearing of the timing advance values of other LTM candidate cells.

[0300] Optionally, the terminal device autonomously retains and / or maintains the LTM candidate timing advance information of the corresponding candidate cell, for example: retaining and / or maintaining at least one piece of LTM candidate timing advance information, and / or, retaining and / or maintaining all LTM candidate timing advance information.

[0301] Optionally, the terminal device autonomously considers that the candidate timing advance timer has timed out, for example: considering that at least one LTM candidate timing advance timer has not timed out or does not time out, and / or, considering that all LTM candidate timing advance timers have not timed out or do not time out, and / or, maintaining at least one LTM candidate timing advance timer running, and / or, maintaining all LTM candidate timing advance timers running.

[0302] Optionally, at least one of a retain timing advance indication, a release timing advance indication, and a second candidate cell identifier is generated or determined according to the timing advance information autonomously retained and / or maintained by the terminal device.

[0303] Optionally, the second candidate cell identifier may be the same as, different from, or partially the same as the first candidate cell identifier.

[0304] Optionally, the radio resource control reconfiguration complete signaling carries at least one of a retain timing advance indication, a release timing advance indication, and a second candidate cell identifier.

[0305] Optionally, when the terminal device retains and / or maintains the timing advance values of all LTM candidate cells, the radio resource control reconfiguration complete signaling carries a retain timing advance indication.

[0306] Optionally, when the terminal device retains and / or maintains the timing advance values of at least one LTM candidate cell, the radio resource control reconfiguration complete signaling carries a retain timing advance indication and a second candidate cell identifier.

[0307] Through the technical solution of this embodiment, specifically by the terminal device retaining and / or maintaining the timing advance information according to the first policy during the conditional LTM cell handover process, and / or, enabling the network device to know that the terminal device autonomously retains and / or maintains the timing advance information through the retain timing advance indication and / or the second candidate cell identifier, the processing mechanism of the timing advance information can be improved, thereby supporting reducing signaling overhead, and / or, supporting reducing cell handover latency, and / or, supporting reducing service interruption duration.

[0308] The fifth embodiment

[0309] Refer to Figure 7 ,Figure 7 It is a schematic diagram of the processing flow shown according to the fifth embodiment. Based on any of the foregoing embodiments of the present application, this embodiment further discloses a solution for the terminal device to retain and / or maintain timing advance information according to the first policy in the case of a conditional LTM cell handover failure.

[0310] Optionally, the timer T304 is started when the terminal detaches from the source cell and applies the target cell configuration process.

[0311] Optionally, when the timer T304 times out, the terminal device replies with the source cell context configuration. For details, reference can be made to Protocol TS 38.331 Release 18, 5.3.5.8.3.

[0312] Optionally, when the timer T304 times out, the terminal device starts radio resource control re-establishment.

[0313] Optionally, the terminal device stops the timer T304.

[0314] Optionally, when the conditional LTM handover configuration includes an attempt to perform an LTM handover, cell selection is performed; when the conditional LTM handover configuration does not include an attempt to perform an LTM handover, MAC reset is performed, and / or timing advance information is retained and / or maintained according to the first policy.

[0315] Optionally, performing MAC reset includes retaining and / or maintaining timing advance information according to the first policy.

[0316] Optionally, the terminal device performs cell selection and / or selects a suitable cell.

[0317] Optionally, when an attempt to perform an LTM handover is configured and the selected cell is a candidate cell in the LTM handover configuration or the conditional LTM handover configuration, an LTM handover or a conditional LTM handover is performed; when the selected cell is not a candidate cell in the LTM handover configuration or the conditional LTM handover configuration and an attempt to perform an LTM handover is configured, MAC reset is performed, and / or timing advance information is retained and / or maintained according to the first policy, and / or a radio resource control re-establishment process is initiated.

[0318] Optionally, performing MAC reset includes retaining and / or maintaining timing advance information according to the first policy.

[0319] Optionally, retaining and / or maintaining the timing advance information according to the first policy includes retaining and / or maintaining the timing advance information based on a conditional LTM cell handover request and / or a first candidate cell identifier, retaining and / or maintaining the timing advance information based on timing advance indication information, and retaining and / or maintaining the timing advance information based on the terminal device's autonomous retention and / or maintenance of the timing advance information, with at least one of the above being included.

[0320] Optionally, the terminal device retains and / or maintains the timing advance information based on a conditional LTM cell handover request and / or a first candidate cell identifier, including at least one of the following:

[0321] Maintaining the operation of the timing advance timer for at least one candidate cell based on a conditional LTM cell handover request and / or a first candidate cell identifier;

[0322] Regarding the timing advance timer for at least one candidate cell as not timed out based on a conditional LTM cell handover request and / or a first candidate cell identifier;

[0323] Retaining and / or maintaining the timing advance value for at least one candidate cell based on a conditional LTM cell handover request and / or a first candidate cell identifier.

[0324] Optionally, the terminal device retains and / or maintains the timing advance information based on timing advance indication information, including at least one of the following:

[0325] Maintaining the operation of the timing advance timer for at least one candidate cell based on timing advance indication information;

[0326] Regarding the timing advance timer for at least one candidate cell as not timed out based on timing advance indication information;

[0327] Retaining and / or maintaining the timing advance value for at least one candidate cell based on timing advance indication information.

[0328] Optionally, the terminal device retains and / or maintains the timing advance information based on the terminal device's autonomous retention and / or maintenance of the timing advance information, including at least one of the following:

[0329] Maintaining the operation of the timing advance timer for at least one candidate cell based on the terminal device's autonomous retention and / or maintenance of the timing advance information;

[0330] Regarding the timing advance timer for at least one candidate cell as not timed out based on the terminal device's autonomous retention and / or maintenance of the timing advance information;

[0331] Retaining and / or maintaining the timing advance value for at least one candidate cell based on the terminal device's autonomous retention and / or maintenance of the timing advance information.

[0332] Optionally, maintaining the operation of the timing advance timer for at least one candidate cell includes at least one of the following:

[0333] Keep at least one LTM candidate timing advance timer running;

[0334] Keep all LTM candidate timing advance timers running;

[0335] Keep the LTM candidate timing advance timer determined according to the timing advance indication information running;

[0336] Keep the LTM candidate timing advance timer determined according to the candidate cell identity running.

[0337] Optionally, consider that the timing advance timer of at least one candidate cell has not timed out, including at least one of the following:

[0338] Consider that the other LTM candidate timing advance timers except the timing advance timer of the target cell have timed out;

[0339] Consider that at least one LTM candidate timing advance timer has not timed out or is not timed out;

[0340] Consider that the LTM candidate timing advance timer determined according to the timing advance indication information has not timed out or is not timed out;

[0341] Consider that the LTM candidate timing advance timer determined according to the candidate cell identity has not timed out or is not timed out.

[0342] Optionally, retain and / or maintain the timing advance value of at least one candidate cell, including at least one of the following:

[0343] Retain and / or maintain the timing advance value of the candidate cells other than the target cell;

[0344] Retain and / or maintain the timing advance value of at least one candidate cell determined according to the timing advance indication information;

[0345] Retain and / or maintain the timing advance value of at least one candidate cell determined according to the candidate cell identity.

[0346] Optionally, at least one candidate cell includes the target cell, for example: the cell that performs conditional LTM cell handover and / or the LTM candidate cell that meets the execution condition.

[0347] Optionally, if the timing advance timer of at least one candidate cell times out, it is considered that the timing advance value of at least one candidate cell has become invalid, and / or, release and / or clear the timing advance value of at least one candidate cell.

[0348] Optionally, if the timing advance timer of at least one candidate cell has not timed out or is not timed out, it is considered that the timing advance value of at least one candidate cell has not become invalid, and / or, retain and / or maintain the timing advance value of at least one candidate cell.

[0349] Optionally, when the timing advance timer of at least one candidate cell has not expired or is still running, it implicitly indicates that the timing advance timers of other candidate cells are considered to have expired or stopped running.

[0350] Optionally, when the timing advance value of at least one candidate cell is retained and / or maintained, it implicitly indicates that the timing advance values of other LTM candidate cells are released and / or cleared.

[0351] Optionally, the terminal device autonomously retains and / or maintains the corresponding candidate cell LTM candidate timing advance information, for example: retaining and / or maintaining at least one LTM candidate timing advance information, and / or, retaining and / or maintaining all LTM candidate timing advance information.

[0352] Optionally, the terminal device autonomously considers the LTM candidate timing advance timer to have expired, for example: considering that at least one LTM candidate timing advance timer has not expired or is not timed out, and / or, considering that all LTM candidate timing advance timers have not expired or are not timed out, and / or, maintaining at least one LTM candidate timing advance timer running, and / or, maintaining all LTM candidate timing advance timers running.

[0353] Optionally, the terminal device initiates a radio resource control re-establishment procedure, or, performs an LTM handover, or, performs a conditional LTM handover.

[0354] Optionally, for the terminal device to initiate a radio resource control re-establishment procedure, reference can be made to Protocol TS 38.331 Release 18, 5.3.7.

[0355] Optionally, for the terminal device to perform an LTM handover, reference can be made to Protocol TS 38.331 Release 18, 5.3.5.18.6.

[0356] Optionally, the terminal device retains and / or maintains the timing advance information according to the first policy during the execution of the conditional LTM handover, and reference can be made to the foregoing third embodiment and / or fourth embodiment.

[0357] Through the technical solution of this embodiment, specifically by the terminal device retaining and / or maintaining the timing advance information according to the first policy when the conditional LTM cell handover fails, the processing mechanism of the timing advance information can be improved, thereby supporting a reduction in signaling overhead, and / or, supporting a reduction in cell handover latency, and / or, supporting a reduction in service interruption duration.

[0358] Sixth Embodiment

[0359] Refer to Figure 8 , Figure 8It is a schematic flowchart of the processing method shown in the sixth embodiment. The method of this embodiment can be applied to a network device (such as a base station), and includes the steps:

[0360] S1: Send conditional LTM configuration information so that the terminal device retains and / or maintains timing advance information according to the first policy.

[0361] Optionally, the network device sends the conditional LTM configuration information to the terminal device.

[0362] Optionally, the terminal device receives the conditional LTM configuration information sent by the network device.

[0363] Optionally, the conditional LTM configuration information carries at least one LTM candidate timing advance timer.

[0364] Optionally, the terminal device retains and / or maintains timing advance information according to the first policy, including at least one of the following:

[0365] The terminal device retains and / or maintains timing advance information based on the conditional LTM cell handover request and / or the first candidate cell identifier;

[0366] The terminal device retains and / or maintains timing advance information based on the timing advance indication information;

[0367] The terminal device retains and / or maintains timing advance information based on the terminal device's autonomous retention and / or maintenance of timing advance information.

[0368] Optionally, the conditional LTM cell handover request and / or the first candidate cell identifier are sent by the terminal device from the radio resource control layer to the media access control layer.

[0369] Optionally, the timing advance indication information is carried in the LTM candidate timing advance command MAC CE.

[0370] Optionally, the terminal device starts the timing advance timer of at least one candidate cell according to the LTM candidate timing advance command MAC CE.

[0371] Optionally, the terminal device retains and / or maintains timing advance information when performing media access control reset and / or meeting the conditions for conditional LTM cell handover.

[0372] Optionally, the terminal device sends a retain timing advance indication and / or a second candidate cell identifier to the network device.

[0373] Optionally, the retain timing advance indication and / or the second candidate cell identifier are generated or determined according to the terminal device's autonomous retention and / or maintenance of timing advance information.

[0374] Optionally, the network device receives a reservation time advance indication and / or a second candidate cell identifier sent by the terminal device.

[0375] Optionally, the reservation time advance indication and / or the second candidate cell identifier are used to enable the network device to know the candidate cells for which the terminal device performs reservation and / or maintains time advance information.

[0376] Optionally, the reservation and / or maintenance of time advance information includes at least one of maintaining the time advance timer of at least one candidate cell running, considering the time advance timer of at least one candidate cell not timed out, and reserving and / or maintaining the time advance value of at least one candidate cell.

[0377] Optionally, the terminal device reserves and / or maintains time advance information based on a conditional LTM cell handover request and / or a first candidate cell identifier, including at least one of the following:

[0378] The terminal device maintains the time advance timer of at least one candidate cell running based on the conditional LTM cell handover request and / or the first candidate cell identifier;

[0379] The terminal device considers the time advance timer of at least one candidate cell not timed out based on the conditional LTM cell handover request and / or the first candidate cell identifier;

[0380] The terminal device reserves and / or maintains the time advance value of at least one candidate cell based on the conditional LTM cell handover request and / or the first candidate cell identifier.

[0381] Optionally, the terminal device maintaining the time advance timer of at least one candidate cell running based on the conditional LTM cell handover request and / or the first candidate cell identifier includes: The terminal device applies the corresponding candidate cell time advance value according to the first candidate cell identifier and maintains the time advance timers of other non-first candidate cell identifiers running continuously.

[0382] Optionally, the terminal device considering the time advance timer of at least one candidate cell not timed out based on the conditional LTM cell handover request and / or the first candidate cell identifier includes: The terminal device applies the corresponding candidate cell time advance value according to the first candidate cell identifier and considers the time advance timers of other non-first candidate cell identifiers not timed out.

[0383] Optionally, the terminal device reserving and / or maintaining the time advance value of at least one candidate cell based on the conditional LTM cell handover request and / or the first candidate cell identifier includes: The terminal device applies the corresponding candidate cell time advance value according to the first candidate cell identifier and reserves and / or maintains the time advance values of other non-first candidate cell identifiers.

[0384] Optionally, the terminal device retains and / or maintains timing advance information based on the timing advance indication information, including at least one of the following:

[0385] The terminal device maintains the operation of the timing advance timer of at least one candidate cell based on the timing advance indication information;

[0386] The terminal device considers that the timing advance timer of at least one candidate cell has not timed out based on the timing advance indication information;

[0387] The terminal device retains and / or maintains the timing advance value of at least one candidate cell based on the timing advance indication information.

[0388] Optionally, the terminal device maintaining the operation of the timing advance timer of at least one candidate cell based on the timing advance indication information includes: the terminal device applies the timing advance value of the candidate cell and maintains the continuous operation of the timing advance timer according to the corresponding timing advance indication information, and / or, the terminal device maintains the continuous operation of the timing advance timer for other candidate cells according to the corresponding timing advance indication information.

[0389] Optionally, the terminal device considering that the timing advance timer of at least one candidate cell has not timed out based on the timing advance indication information includes: the terminal device applies the timing advance value of the candidate cell and maintains the timing advance timer continuously not timed out according to the corresponding timing advance indication information, and / or, the terminal device maintains the timing advance timer continuously not timed out for other candidate cells according to the corresponding timing advance indication information.

[0390] Optionally, the terminal device retaining and / or maintaining the timing advance value of at least one candidate cell based on the timing advance indication information includes: the terminal device applies the timing advance value of the candidate cell and retains the timing advance value according to the corresponding timing advance indication information, and / or, the terminal device retains the timing advance value for other candidate cells according to the corresponding timing advance indication information.

[0391] Optionally, the terminal device retains and / or maintains timing advance information based on the terminal device's autonomous retention and / or maintenance of timing advance information, including at least one of the following:

[0392] The terminal device maintains the operation of the timing advance timer of at least one candidate cell based on the terminal device's autonomous retention and / or maintenance of timing advance information;

[0393] The terminal device considers that the timing advance timer of at least one candidate cell has not timed out based on the terminal device's autonomous retention and / or maintenance of timing advance information;

[0394] The terminal device retains and / or maintains the timing advance value of at least one candidate cell based on the terminal device's autonomous retention and / or maintenance of timing advance information.

[0395] Optionally, the terminal device keeps at least one candidate cell's timing advance timer running, including at least one of the following:

[0396] The terminal device keeps at least one LTM candidate timing advance timer running;

[0397] The terminal device keeps all LTM candidate timing advance timers running;

[0398] The terminal device keeps the LTM candidate timing advance timer determined according to the timing advance indication information running;

[0399] The terminal device keeps the LTM candidate timing advance timer determined according to the candidate cell identifier running.

[0400] Optionally, it is considered that the timing advance timer of at least one candidate cell has not timed out, including at least one of the following:

[0401] It is considered that other LTM candidate timing advance timers except the timing advance timer of the target cell have timed out;

[0402] It is considered that at least one LTM candidate timing advance timer has not timed out or does not time out;

[0403] It is considered that the LTM candidate timing advance timer determined according to the timing advance indication information has not timed out or does not time out;

[0404] It is considered that the LTM candidate timing advance timer determined according to the candidate cell identifier has not timed out or does not time out.

[0405] Optionally, the terminal device retains and / or maintains the timing advance value of at least one candidate cell, including at least one of the following:

[0406] The terminal device retains and / or maintains the timing advance values of candidate cells other than the target cell;

[0407] The terminal device retains and / or maintains the timing advance values of at least one candidate cell determined according to the timing advance indication information;

[0408] The terminal device retains and / or maintains the timing advance values of at least one candidate cell determined according to the candidate cell identifier.

[0409] Optionally, at least one candidate cell includes the target cell, for example: the cell that performs conditional LTM cell handover and / or the LTM candidate cell that meets the execution conditions.

[0410] Optionally, when the timing advance timer of at least one candidate cell times out, it is considered that the timing advance value of at least one candidate cell has become invalid, and / or, the timing advance value of at least one candidate cell is released and / or cleared.

[0411] Optionally, if the timing advance timer of at least one candidate cell does not expire or is not timing out, it is regarded that the timing advance value of at least one candidate cell is not invalidated, and / or the timing advance value of at least one candidate cell is retained and / or maintained.

[0412] Optionally, when the timing advance timer of at least one candidate cell does not expire or keeps running, it implicitly means that the timing advance timers of other candidate cells are regarded as having expired or stopped running.

[0413] Optionally, when the timing advance value of at least one candidate cell is retained and / or maintained, it implicitly means that the timing advance values of other LTM candidate cells are released and / or cleared.

[0414] Optionally, the terminal device autonomously retains and / or maintains the corresponding candidate cell LTM candidate timing advance information. For example: the terminal device retains and / or maintains at least one LTM candidate timing advance information, and / or the terminal device retains and / or maintains all LTM candidate timing advance information.

[0415] Optionally, the terminal device autonomously regards the LTM candidate timing advance timer as having expired. For example: regards that at least one LTM candidate timing advance timer does not expire or is not timing out, and / or regards that all LTM candidate timing advance timers do not expire or are not timing out, and / or keeps at least one LTM candidate timing advance timer running, and / or keeps all LTM candidate timing advance timers running.

[0416] Through the technical solution of this embodiment, specifically by the network device sending conditional LTM configuration information to enable the terminal device to retain and / or maintain the timing advance information according to the first policy, the processing mechanism of the timing advance information can be improved, thereby supporting reducing the cell handover delay and / or supporting reducing the service interruption duration.

[0417] The seventh embodiment

[0418] Referring to Figure 9 , Figure 9 is the structural schematic diagram of the processing device provided by the embodiment of the present application Figure 1 , and this device can be carried on or is the terminal device in the above method embodiment. Figure 9 The shown processing device can be used to execute some or all of the functions in the method embodiment described in the above embodiment. As Figure 9 shown, this processing device 1100 includes:

[0419] A processing module 1101, configured to retain and / or maintain the timing advance information according to the first policy.

[0420] Optionally, retaining and / or maintaining the timing advance information according to the first policy includes at least one of the following:

[0421] Reserve and / or maintain timing advance information based on a conditional LTM cell handover request and / or a first candidate cell identifier;

[0422] Reserve and / or maintain timing advance information based on timing advance indication information;

[0423] Reserve and / or maintain timing advance information based on the UE's autonomous reservation and / or maintenance of timing advance information.

[0424] Optionally, the conditional LTM cell handover request and / or the first candidate cell identifier are sent from the radio resource control layer to the media access control layer.

[0425] Optionally, the timing advance indication information is carried in the LTM candidate timing advance command MAC CE.

[0426] Optionally, the device further includes at least one of the following:

[0427] Start the timing advance timer for at least one candidate cell according to the LTM candidate timing advance command MAC CE;

[0428] Reserve and / or maintain timing advance information when performing media access control reset and / or meeting the conditions for LTM cell handover;

[0429] Send a reserved timing advance indication and / or a second candidate cell identifier to the network device.

[0430] Optionally, reserving and / or maintaining timing advance information includes at least one of the following:

[0431] Keep the timing advance timer for at least one candidate cell running;

[0432] Treat the timing advance timer for at least one candidate cell as not timed out;

[0433] Reserve and / or maintain the timing advance value for at least one candidate cell.

[0434] Optionally, the timing advance timer for at least one candidate cell is carried in the conditional LTM configuration information.

[0435] Optionally, the reserved timing advance indication and / or the second candidate cell identifier are generated or determined according to the UE's autonomous reservation and / or maintenance of timing advance information.

[0436] The processing device provided in the embodiments of the present application may execute the technical solutions shown in the above method embodiments, and the implementation principles and beneficial effects are similar, which will not be elaborated here.

[0437] Eighth Embodiment

[0438] Refer to Figure 10 , Figure 10Structural schematic diagram of the processing device provided by the embodiment of the present application Figure 2 This device can be mounted on or is the network device in the above method embodiment. Figure 10 The shown processing device can be used to execute some or all of the functions in the method embodiment described in the above embodiment. As Figure 10 shown, the processing device 1200 includes:

[0439] A sending module 1201, configured to send conditional LTM configuration information, so that the terminal device retains and / or maintains timing advance information according to the first policy.

[0440] Optionally, the terminal device retaining and / or maintaining timing advance information according to the first policy includes at least one of the following:

[0441] The terminal device retains and / or maintains timing advance information based on a conditional LTM cell handover request and / or a first candidate cell identifier;

[0442] The terminal device retains and / or maintains timing advance information based on timing advance indication information;

[0443] The terminal device retains and / or maintains timing advance information based on the terminal device's autonomous retention and / or maintenance of timing advance information.

[0444] Optionally, the device further includes at least one of the following:

[0445] The conditional LTM configuration information carries the timing advance timer of at least one candidate cell;

[0446] The conditional LTM cell handover request and / or the first candidate cell identifier are sent by the terminal device from the radio resource control layer to the media access control layer;

[0447] The timing advance indication information is carried in the LTM candidate timing advance command MAC CE;

[0448] The terminal device retains and / or maintains timing advance information when performing media access control reset and / or meeting the conditions for conditional LTM cell handover;

[0449] The terminal device starts the timing advance timer of at least one candidate cell according to the LTM candidate timing advance command MAC CE;

[0450] Receive the retention timing advance indication and / or the second candidate cell identifier.

[0451] Optionally, the terminal device retaining and / or maintaining timing advance information includes at least one of the following:

[0452] The terminal device maintains the operation of the timing advance timer of at least one candidate cell;

[0453] The timing advance timer of the terminal device for regarding at least one candidate cell has not timed out;

[0454] The terminal device retains and / or maintains the timing advance value of at least one candidate cell.

[0455] The processing device provided by the embodiments of the present application can execute the technical solutions shown in the above method embodiments. The implementation principles and beneficial effects are similar and will not be elaborated here.

[0456] Refer to Figure 11 , Figure 11 which is a schematic structural diagram of the communication device provided by the embodiments of the present application. As Figure 11 shown, the communication device 160 described in this embodiment can be the terminal device (or a component applicable to the terminal device) or the network device (or a component applicable to the network device) mentioned in the above method embodiments. The communication device 160 can be used to implement the methods corresponding to the terminal device or the network device described in the above method embodiments. For specific descriptions, refer to the explanations in the above method embodiments.

[0457] The communication device 160 can include one or more processors 161. The processor 161 can also be referred to as a processing unit and can implement certain control or processing functions. The processor 161 can be a general-purpose processor or a dedicated processor, etc. For example, it can be a baseband processor or a central processing unit. The baseband processor can be used to process communication protocols and communication data, and the central processing unit can be used to control the communication device, execute software programs, and process the data of software programs.

[0458] Optionally, the processor 161 can also store instructions 163 or data (such as intermediate data). Optionally, the instructions 163 can be run by the processor 161, so that the communication device 160 executes the methods corresponding to the terminal device or the network device described in the above method embodiments.

[0459] Optionally, the communication device 160 can include a circuit, and the circuit can implement the functions of sending, receiving, or communicating in the above method embodiments.

[0460] Optionally, the communication device 160 can include one or more memories 162, on which instructions 164 can be stored. The instructions can be run on the processor 161, so that the communication device 160 executes the methods described in the above method embodiments.

[0461] Optionally, the memory 162 can also store data. The processor 161 and the memory 162 can be set separately or integrated together.

[0462] 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 radio access network device). The transceiver 165, which may be referred to as a transceiver unit, transceiver, transceiver circuit, or transceiver, etc., is used to implement the transceiver function of the communication device 160.

[0463] Optionally, when the communication device 160 is used to implement the operations of the terminal device in the above embodiments, for example, the conditional LTM configuration information may be received by the transceiver 165 and / or the processor 161.

[0464] Optionally, for the specific implementation processes of the processor 161 and the transceiver 165, reference may be made to the relevant descriptions in the above embodiments, which will not be elaborated herein.

[0465] Optionally, when the communication device 160 is used to implement the operations of the network device in the above embodiments, for example: the conditional LTM configuration information may be sent by the transceiver 165 to enable the terminal device to retain and / or maintain the time advance information according to the first policy.

[0466] Optionally, for the specific implementation processes of the processor 161 and the transceiver 165, reference may be made to the relevant descriptions in the above embodiments, which will not be elaborated herein.

[0467] The processor 161 and transceiver 165 described in this application can be implemented on an IC (Integrated Circuit), analog integrated circuit, RFIC (Radio Frequency Integrated Circuit), mixed-signal integrated circuit, ASIC (Application Specific Integrated Circuit), PCB (Printed Circuit Board), electronic device, etc. The processor 161 and transceiver 165 can also be fabricated 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), BiCMOS (Bipolar CMOS), SiGe (Silicon Germanium), GaAs (Gallium Arsenide), 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), and specifically needs to be determined according to the context. In addition, the terminal device can be implemented in various forms. For example, the terminal device described in this application can include mobile terminals such as mobile phones, tablet computers, laptop computers, palmtop computers, personal digital assistants (PDAs), portable media players (PMPs), navigation devices, wearable devices, smart bracelets, pedometers, etc., and fixed terminal devices such as digital TVs, desktop computers, etc.

[0468] Although in the above embodiment descriptions, the communication device is described by taking the terminal device or network device as an example, the scope of the communication device described in this application is not limited to the above terminal device or network device, and the structure of the communication device can be unrestricted by Figure 11 the limitations. The communication device can be an independent device or can be a part of a larger device.

[0469] This application embodiment also provides a communication system, including: a terminal device in any of the above embodiments; and, a network device in any of the above embodiments.

[0470] The embodiment of the present application further provides a communication device, including a memory and a processor. A processing program is stored on the memory. When the processing program is executed by the processor, the steps of the processing method in any of the above embodiments are implemented.

[0471] The communication device in the present application can be a terminal device (such as a mobile phone), a network device (such as a base station), or a chip (such as an SOC or a baseband chip with communication functions, etc.). The specific reference needs to be clarified according to the context.

[0472] The embodiment of the present application further provides a computer-readable storage medium. A processing program is stored on the computer-readable storage medium. When the processing program is executed by the processor, the steps of the processing method in any of the above embodiments are implemented.

[0473] In the embodiments of the communication device and the computer-readable storage medium provided by the embodiments of the present application, all the technical features of any of the above processing method embodiments may be included. The content of the description expansion and explanation is basically the same as that of the above method embodiments, and will not be elaborated here.

[0474] The embodiment of the present application further provides a computer program product. The computer program product includes computer program code. When the computer program code runs on a computer, the computer is enabled to execute the methods in the above various possible implementation manners. The embodiment of the present application further provides a chip, including a memory and a processor. The memory is used to store a computer program, and the processor is used to call and run the computer program from the memory, so that the device installed with the chip executes the methods in the above various possible implementation manners.

[0475] It can be understood that the above scenarios are only examples and do not constitute a limitation on the application scenarios of the technical solutions provided by the embodiments of the present application. The technical solutions of the present application can also be applied to other scenarios. For example, as known to those of ordinary skill in the art, with the evolution of the system architecture and the emergence of new business scenarios, the technical solutions provided by the embodiments of the present application are equally applicable to similar technical problems. The serial numbers of the embodiments of the present application are only for description and do not represent the superiority or inferiority of the embodiments. The steps in the method of the embodiments of the present application can be adjusted, combined, and deleted according to actual needs. The units in the devices of the embodiments of the present application can be combined, divided, and deleted according to actual needs. In the present application, for the description of the same or similar term concepts, technical solutions, and / or application scenarios, detailed description is generally only made when it first appears. When it appears repeatedly later, for the sake of brevity, it is generally not repeated. When understanding the technical solutions and other contents of the present application, for the same or similar term concepts, technical solutions, and / or application scenarios that are not described in detail later, reference can be made to the relevant detailed descriptions before. In the present application, the descriptions of the various embodiments have their own emphases. For the parts not detailed or recorded in a certain embodiment, reference can be made to the relevant descriptions of other embodiments. The technical features of the technical solutions of the present application can be combined arbitrarily. For the sake of concise description, not all possible combinations of the various technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope recorded in the present application.

[0476] Through the description of the above embodiments, those skilled in the art can clearly understand that the above-described embodiment methods can be implemented by means of software plus a necessary general hardware platform. Of course, they can also be implemented by hardware, but in many cases, the former is a better implementation. Based on such an understanding, the technical solution of the present 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 as described above (such as ROM / RAM, magnetic disk, optical disc), and includes several instructions for causing a terminal device (which can be a mobile phone, computer, server, controlled terminal device, or network device, etc.) to execute the methods of each embodiment of the present application. In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented using software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the processes or functions according to the embodiments of the present application are generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. The computer instructions can be stored in a storage medium or transmitted from one storage medium to another. For example, the computer instructions can be transmitted from one website, computer, server, or data center to another website, computer, server, or data center by wire (such as coaxial cable, optical fiber, digital subscriber line) or wirelessly (such as infrared, wireless, microwave, etc.). The storage medium can be any available medium that the computer can access or a data storage device such as a server or data center that includes one or more integrated available media. The available medium can be a magnetic medium (such as a floppy disk, storage disk, magnetic tape), an optical medium (such as a DVD), or a semiconductor medium (such as a Solid State Disk (SSD)), etc. The above are only the preferred embodiments of the present application, and do not limit the patent scope of the present application. Any equivalent structural or equivalent process transformation made by using the specification and drawings of the present application, or directly or indirectly applied in other related technical fields, shall be equally included in the patent protection scope of the present application.

Claims

1. A processing method, characterized in that: Applied to terminal equipment, including the steps of: S2: Retain and / or maintain the timing advance information according to the first strategy.

2. The method according to claim 1, characterized in that Step S2 includes at least one of the following: retaining and / or maintaining the timing advance information based on the conditional LTM cell handover request and / or the first candidate cell identity; retaining and / or maintaining the timing advance information based on the timing advance indication information; The time advance information is retained and / or maintained based on the terminal device autonomously retaining and / or maintaining the time advance information.

3. The method according to claim 2, characterized in that Also includes at least one of the following: The conditional LTM cell handover request and / or the first candidate cell identifier is sent by the radio resource control layer to the media access control layer; The timing advance indication information is carried in the LTM candidate timing advance command MAC CE.

4. The method according to claim 3, characterized in that Also includes at least one of the following: Starting a time advance timer of at least one candidate cell according to the LTM candidate time advance command MAC CE; retaining and / or maintaining time advance information in the case of performing a media access control reset and / or satisfying a conditional LTM cell handover; Send the reserved time advance indication and / or the second candidate cell identifier to the network device.

5. The method according to claim 4, characterized in that Retain and / or maintain time advance information, including at least one of the following: Maintaining a timing advance timer of at least one candidate cell running; It is deemed that the timing advance timer of at least one candidate cell has not timed out; The timing advance value of at least one candidate cell is reserved and / or maintained.

6. The method according to claim 5, characterized in that Also includes at least one of the following: The timing advance timer of at least one candidate cell is carried in the conditional LTM configuration information; The retention time advance indication and / or the second candidate cell identifier is generated or determined based on the terminal device autonomously retaining and / or maintaining the time advance information.

7. A processing method, characterized in that: Applied to network equipment, including the steps of: S1: Send conditional LTM configuration information to enable the terminal device to retain and / or maintain time advance information according to a first strategy.

8. The method according to claim 7, characterized in that The terminal device retains and / or maintains the time advance information according to the first strategy, including at least one of the following: The terminal device retains and / or maintains the time advance information based on the conditional LTM cell handover request and / or the first candidate cell identity; The terminal device retains and / or maintains the time advance information based on the time advance indication information; The terminal device retains and / or maintains the time advance information based on the terminal device autonomously retaining and / or maintaining the time advance information.

9. The method according to claim 8, characterized in that Also includes at least one of the following: The conditional LTM configuration information carries a timing advance timer of at least one candidate cell; The conditional LTM cell handover request and / or the first candidate cell identifier is sent by the terminal device from the radio resource control layer to the media access control layer; The timing advance indication information is carried in the LTM candidate timing advance command MAC CE; The terminal device retains and / or maintains the timing advance information when performing a media access control reset and / or a conditional LTM cell handover; The terminal device starts a time advance timer of at least one candidate cell according to the LTM candidate time advance command MAC CE; A reserved timing advance indication and / or a second candidate cell identifier is received.

10. The method according to claim 9, characterized in that The terminal device retains and / or maintains the time advance information, including at least one of the following: The terminal device maintains the time advance timer of at least one candidate cell running; The terminal equipment regards at least one candidate cell as a time advance timer that has not timed out; The terminal device reserves and / or maintains a timing advance value of at least one candidate cell.

11. A communication device, characterized in that: include: A memory, a processor, and a processing program stored in the memory and executable on the processor, wherein the processing program is executed by the processor to implement the steps of the processing method according to any one of claims 1 to 10.

12. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program, and the computer program is executed by a processor to implement the steps of the processing method according to any one of claims 1 to 10.

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