Data transmission method, apparatus and system, and communication device and storage medium

Abstract

The present application relates to a data transmission method and apparatus, and a computer device, a storage medium and a computer program product. The method is applied to a terminal device. The method comprises: on the basis of network configuration information, sending auxiliary information for conditional LTM handover to a network device, wherein the auxiliary information for the conditional LTM handover comprises at least one of TA acquisition auxiliary information and conditional LTM handover trigger auxiliary information.

Description

Data transmission method, device, system, communication equipment and storage medium Cross-references

[0001] This application refers to Chinese patent application No. 202410230969.1, filed on February 29, 2024, entitled “Data transmission method, device, system, communication equipment and storage medium”, which is incorporated into this application in its entirety by reference. Technical Field

[0002] The present application relates to the field of communication technology, and in particular to a data transmission method, apparatus, system, communication equipment and storage medium. Background Art

[0003] With the development of communication technology, L1 / L2 Triggered Mobility (LTM) has been introduced in NR mobility. Specifically, the network preconfigures candidate cell configuration information and measurement configuration information for the UE. The UE then measures the candidate cell based on the measurement configuration information and reports the measurement results to the network. The network then makes a cell change decision based on the L1 measurement results reported by the UE. If the network determines that the UE needs to change cells, it sends a cell change command to the UE, which carries the identification information of the target cell. After receiving the cell change command, the UE accesses the target candidate cell.

[0004] In LTM, the network side can also initiate the uplink TA (also known as early TA) acquisition process for the candidate cell. The early TA acquisition process can be triggered by a PDCCH (Physical Downlink Control Channel) command or implemented through UE-based TA measurement configured by RRC (Radio Resource Control). In the former case, the gNB (gNodeB, next-generation base station) to which the candidate cell belongs calculates the TA value and sends it to the gNB to which the serving cell belongs. When triggering LTM handover, the serving cell sends an LTM cell handover command, which includes the TA value of the target cell. In the latter case, the UE performs TA measurement on the candidate cell after RRC configuration. The UE applies the TA value it measures and performs LTM handover without randomization after receiving the cell handover command.

[0005] However, in the conditional LTM switching scenario, the conditional LTM switching is triggered by the terminal side itself. The network side cannot know the target cell of the UE and cannot perform pre-switching preparations in advance. For example, the UE can only perform a random access process first to obtain the TA value of the target cell, thereby increasing the delay of the conditional LTM switching process and resulting in poor overall switching performance. Summary of the Invention

[0006] Based on this, it is necessary to provide a data transmission method, apparatus, computer equipment, computer-readable storage medium and computer program product to address the above technical issues.

[0007] In a first aspect, the present application provides a data transmission method, which is applied to a terminal device and includes:

[0008] According to the network configuration information, auxiliary information of the conditional LTM handover is sent to the network device, wherein the auxiliary information of the conditional LTM handover includes at least one of TA advance acquisition auxiliary information and conditional LTM handover triggering auxiliary information.

[0009] In some embodiments, the network configuration information includes control indication information or candidate cell configuration information of auxiliary information of conditional LTM handover;

[0010] The control indication information at least includes one or more of control indication information for the TA to obtain auxiliary information in advance and control indication information for conditional LTM handover triggering auxiliary information.

[0011] In some embodiments, the sending of conditional LTM switching auxiliary information to the network device according to the network configuration information includes:

[0012] If the control indication information indicates that the auxiliary information of the conditional LTM switching is allowed to be reported, the auxiliary information of the conditional LTM switching is sent to the network device.

[0013] In some embodiments, the control indication information for the TA to obtain the auxiliary information in advance includes at least one or more of the following: first indication information, the number of cells that the TA is allowed to report in advance to obtain, and a list of identifiers of cells that the TA is allowed to report in advance to obtain. The first indication information is used to indicate whether the terminal device is allowed to report the TA to obtain the auxiliary information in advance.

[0014] The control indication information of the conditional LTM handover triggering auxiliary information includes at least second indication information, and the second indication information is used to indicate whether the terminal device is allowed to report the conditional LTM handover triggering auxiliary information.

[0015] In some embodiments, the sending of conditional LTM switching auxiliary information to the network device according to the network configuration information includes:

[0016] If the candidate cell configuration information represents that the layer 1 measurement report of the candidate cell and beam is not configured, or the candidate cell configuration information represents that the random access resources for TA early acquisition have been configured and the execution conditions of the conditional LTM switching have been configured, then the TA early acquisition auxiliary information is sent to the network device.

[0017] In some embodiments, the network configuration information further includes a reporting condition; and the sending of the auxiliary information for the conditional LTM switching to the network device includes:

[0018] When the reporting condition is met, sending the TA advance acquisition auxiliary information to the network device;

[0019] The reporting condition includes at least one or more of a preset reporting trigger event, a preset network parameter threshold, and preset device configuration information; wherein the preset network parameter threshold is determined according to the trigger event parameter of the conditional LTM switching.

[0020] In some embodiments, the sending of auxiliary information for conditional LTM switching to the network device includes:

[0021] After the target cell is determined, conditional LTM handover triggering assistance information is sent to the network device.

[0022] In some embodiments, the TA advance acquisition assistance information includes at least one or more of a candidate cell configuration list, a candidate cell configuration identifier, and a beam list of candidate cells;

[0023] The conditional LTM switching triggering auxiliary information includes at least one or more items of the cell identifier of the target cell of the terminal device and the beam information of the target cell.

[0024] In some embodiments, the control indication information is control indication information for indicating whether the terminal device is allowed to report auxiliary information of a single candidate cell for conditional LTM switching, or control indication information for indicating whether the terminal device is allowed to report auxiliary information of all candidate cells for conditional LTM switching.

[0025] In some embodiments, the method further comprises:

[0026] When the state of the acquired TA changes to an invalid state, if the conditional LTM switching is not triggered, auxiliary information of the conditional LTM switching is sent to the network device.

[0027] In some embodiments, the method further comprises:

[0028] If the candidate cell configuration information represents a layer 1 measurement report of a configured candidate cell and beam, the layer 1 measurement result of the candidate cell is sent to the network device, and the layer 1 measurement result of the candidate cell is used to trigger the network device to perform a TA early acquisition process.

[0029] In a second aspect, the present application further provides a data transmission method, which is applied to a network device and includes:

[0030] Receiving auxiliary information of conditional LTM switching sent by a terminal device; wherein the auxiliary information of conditional LTM switching includes at least one of TA advance acquisition auxiliary information and conditional LTM switching triggering auxiliary information;

[0031] Based on the auxiliary information of the conditional LTM handover, the cell handover preparation processing of the terminal equipment is performed.

[0032] In some embodiments, the performing of the cell handover preparation process of the terminal device based on the auxiliary information of the conditional LTM handover includes:

[0033] performing a TA early acquisition process based on the TA early acquisition assistance information; and / or,

[0034] The conditional LTM handover triggering auxiliary information is sent to the target cell of the terminal device.

[0035] In some embodiments, the method further comprises:

[0036] Receiving a layer 1 measurement result of a candidate cell sent by a terminal device; the layer 1 measurement result is sent by the terminal device when the candidate cell configuration information indicates a layer 1 measurement report of a configured candidate cell and beam;

[0037] A TA early acquisition process is performed according to the layer 1 measurement result of the candidate cell.

[0038] In some embodiments, the method further comprises:

[0039] Sending network configuration information to the terminal device; wherein the network configuration information includes control indication information of auxiliary information of conditional LTM switching or candidate cell configuration information;

[0040] The control indication information includes at least one or more of control indication information for the TA to obtain auxiliary information in advance and control indication information for conditional LTM handover triggering auxiliary information.

[0041] In a third aspect, the present application further provides a data transmission device, which is applied to a terminal device and includes:

[0042] The sending unit is used to send auxiliary information of conditional LTM switching to the network device according to the network configuration information, wherein the auxiliary information of conditional LTM switching includes at least one of TA advance acquisition auxiliary information and conditional LTM switching triggering auxiliary information.

[0043] In a fourth aspect, the present application further provides a data transmission device, which is applied to a network device and includes:

[0044] A receiving unit, configured to receive auxiliary information of conditional LTM switching sent by a terminal device; wherein the auxiliary information of conditional LTM switching includes at least one of TA advance acquisition auxiliary information and conditional LTM switching triggering auxiliary information;

[0045] A processing unit is used to perform cell switching preparation processing of the terminal device based on the auxiliary information of the conditional LTM switching.

[0046] In a fifth aspect, the present application further provides a communication device, including a memory, a transceiver, and a processor:

[0047] A memory for storing a computer program; a transceiver for transmitting and receiving data under the control of the processor; and a processor for reading the computer program in the memory and performing the following operations:

[0048] According to the network configuration information, auxiliary information of the conditional LTM handover is sent to the network device, wherein the auxiliary information of the conditional LTM handover includes at least one of TA advance acquisition auxiliary information and conditional LTM handover triggering auxiliary information.

[0049] In some embodiments, the network configuration information includes control indication information or candidate cell configuration information of auxiliary information of conditional LTM handover;

[0050] The control indication information at least includes one or more of control indication information for the TA to obtain auxiliary information in advance and control indication information for conditional LTM handover triggering auxiliary information.

[0051] In some embodiments, the sending of conditional LTM switching auxiliary information to the network device according to the network configuration information includes:

[0052] If the control indication information indicates that the auxiliary information of the conditional LTM switching is allowed to be reported, the auxiliary information of the conditional LTM switching is sent to the network device.

[0053] In some embodiments, the control indication information for the TA to obtain the auxiliary information in advance includes at least one or more of the following: first indication information, the number of cells that the TA is allowed to report in advance to obtain the auxiliary information, and a list of identifiers of cells that the TA is allowed to report in advance to obtain the auxiliary information; the first indication information is used to indicate whether the terminal device is allowed to report the TA to obtain the auxiliary information in advance;

[0054] The control indication information of the conditional LTM handover triggering auxiliary information includes at least second indication information, and the second indication information is used to indicate whether the terminal device is allowed to report the conditional LTM handover triggering auxiliary information.

[0055] In some embodiments, the sending of auxiliary information for conditional LTM switching to the network device based on the network configuration information includes:

[0056] If the candidate cell configuration information represents that the layer 1 measurement report of the candidate cell and beam is not configured, or the candidate cell configuration information represents that the random access resources for TA early acquisition have been configured and the execution conditions of the conditional LTM switching have been configured, then the TA early acquisition auxiliary information is sent to the network device.

[0057] In some embodiments, the network configuration information further includes a reporting condition; and the sending of the auxiliary information for the conditional LTM switching to the network device includes:

[0058] When the reporting condition is met, sending the TA advance acquisition auxiliary information to the network device;

[0059] The reporting condition includes at least one or more of a preset reporting trigger event, a preset network parameter threshold, and preset device configuration information; wherein the preset network parameter threshold is determined according to the trigger event parameter of the conditional LTM switching.

[0060] In some embodiments, the sending of auxiliary information for conditional LTM switching to the network device includes:

[0061] After the target cell is determined, conditional LTM handover triggering assistance information is sent to the network device.

[0062] In some embodiments, the TA advance acquisition assistance information includes at least one or more of a candidate cell configuration list, a candidate cell configuration identifier, and a beam list of candidate cells;

[0063] The conditional LTM switching triggering auxiliary information includes at least one or more items of the cell identifier of the target cell of the terminal device and the beam information of the target cell.

[0064] In some embodiments, the control indication information is control indication information for indicating whether the terminal device is allowed to report auxiliary information of a single candidate cell for conditional LTM switching, or control indication information for indicating whether the terminal device is allowed to report auxiliary information of all candidate cells for conditional LTM switching.

[0065] In some embodiments, the processor is further configured to read the computer program in the memory and perform the following operations:

[0066] When the state of the acquired TA changes to an invalid state, if the conditional LTM switching is not triggered, auxiliary information of the conditional LTM switching is sent to the network device.

[0067] In some embodiments, the processor is further configured to read the computer program in the memory and perform the following operations:

[0068] If the candidate cell configuration information represents a layer 1 measurement report of a configured candidate cell and beam, the layer 1 measurement result of the candidate cell is sent to the network device, and the layer 1 measurement result of the candidate cell is used to trigger the network device to perform a TA early acquisition process.

[0069] In a sixth aspect, the present application further provides a communication device, including a memory, a transceiver, and a processor:

[0070] A memory for storing a computer program; a transceiver for transmitting and receiving data under the control of the processor; and a processor for reading the computer program in the memory and performing the following operations:

[0071] Receiving auxiliary information of conditional LTM switching sent by a terminal device; wherein the auxiliary information of conditional LTM switching includes at least one of TA advance acquisition auxiliary information and conditional LTM switching triggering auxiliary information;

[0072] Based on the auxiliary information of the conditional LTM handover, the cell handover preparation processing of the terminal equipment is performed.

[0073] In some embodiments, the performing of the cell handover preparation process of the terminal device based on the auxiliary information of the conditional LTM handover includes:

[0074] performing a TA early acquisition process based on the TA early acquisition assistance information; and / or,

[0075] The conditional LTM handover triggering auxiliary information is sent to the target cell of the terminal device.

[0076] In some embodiments, the processor is further configured to read the computer program in the memory and perform the following operations:

[0077] receiving a layer 1 measurement result of a candidate cell sent by a terminal device; the layer 1 measurement result is sent by the terminal device when the candidate cell configuration information indicates a layer 1 measurement report of a configured candidate cell and beam;

[0078] A TA early acquisition process is performed according to the layer 1 measurement result of the candidate cell.

[0079] In some embodiments, the processor is further configured to read the computer program in the memory and perform the following operations:

[0080] Sending network configuration information to the terminal device; wherein the network configuration information includes control indication information of auxiliary information of conditional LTM switching or candidate cell configuration information;

[0081] The control indication information includes at least one or more of control indication information for the TA to obtain auxiliary information in advance and control indication information for conditional LTM handover triggering auxiliary information.

[0082] In a seventh aspect, the present application further provides a data transmission system, the system comprising a terminal device and a network device; wherein:

[0083] The terminal device is configured to send auxiliary information of the conditional LTM handover to the network device according to the network configuration information; wherein the auxiliary information of the conditional LTM handover includes at least one of TA advance acquisition auxiliary information and conditional LTM handover triggering auxiliary information;

[0084] The network device is used to receive the auxiliary information of the conditional LTM switching sent by the terminal device, and perform cell switching preparation processing of the terminal device based on the auxiliary information of the conditional LTM switching.

[0085] In an eighth aspect, the present application also provides a computer-readable storage medium on which a computer program is stored, and when the computer program is executed by a processor, the above-mentioned data transmission method is implemented.

[0086] In a ninth aspect, the present application also provides a computer program product, comprising a computer program, which implements the above-mentioned data transmission method when executed by a processor.

[0087] In the above-mentioned data transmission method, apparatus, computer equipment, storage medium and computer program product, the terminal equipment can send auxiliary information of conditional LTM switching to the network equipment based on the network configuration information, wherein the auxiliary information of conditional LTM switching includes at least one of TA advance acquisition auxiliary information and conditional LTM switching trigger auxiliary information. Through this solution, in the scenario of conditional LTM switching, the network equipment can make preparations for the cell switching of the terminal equipment in advance based on the auxiliary information of conditional LTM switching sent by the terminal equipment, thereby reducing the delay of the conditional LTM switching process and improving the overall performance of the switching.

[0088] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0089] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the embodiments below. The accompanying drawings are for illustration purposes only and are not to be considered as limiting the present application. The same reference numerals are used throughout the drawings to denote the same components. In the drawings:

[0090] FIG1 is a diagram illustrating an application environment of a data transmission method according to an embodiment of the present application;

[0091] FIG2 is a flow chart of a data transmission method according to an embodiment of the present application;

[0092] FIG3 is a flow chart of a data transmission method provided by another embodiment of the present application;

[0093] FIG4 is a flow chart of an example of a data transmission method provided in an embodiment of the present application;

[0094] FIG5 is a flow chart of an example of a data transmission method provided in another embodiment of the present application;

[0095] FIG6 is a flow chart of an example of a data transmission method provided in another embodiment of the present application;

[0096] FIG7 is a flow chart of an example of a data transmission method provided in another embodiment of the present application;

[0097] FIG8 is a structural block diagram of a data transmission device provided in an embodiment of the present application;

[0098] FIG9 is a structural block diagram of a data transmission device provided by another embodiment of the present application;

[0099] FIG10 is a diagram showing the internal structure of a communication device according to an embodiment of the present application. DETAILED DESCRIPTION

[0100] The following embodiments of the technical solution of the present application will be described in detail with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application and are therefore only examples and are not intended to limit the scope of protection of the present application.

[0101] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned figure descriptions are intended to cover non-exclusive inclusions.

[0102] In the description of the embodiments of this application, the technical terms "first" and "second" are used only to distinguish different objects and should not be understood to indicate or imply relative importance or implicitly specify the quantity, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, the meaning of "plurality" is more than two, unless otherwise clearly and specifically defined.

[0103] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0104] In the description of the embodiments of this application, the term "and / or" is simply a description of the association relationship between associated objects, indicating that three relationships can exist. For example, A and / or B can represent the following three situations: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this document generally indicates that the associated objects are in an "or" relationship.

[0105] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0106] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.

[0107] In the description of the embodiments of the present application, unless otherwise expressly specified or limited, technical terms such as "installed," "connected," "connected," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; internal connections between two components or interactions between two components. Those skilled in the art can understand the specific meanings of the above terms in the embodiments of the present application based on specific circumstances.

[0108] The embodiments of the present application provide a data transmission method and apparatus for reporting auxiliary information for conditional LTM handover, thereby enabling a network device to perform cell handover preparation processing for a terminal device based on the auxiliary information. The method and apparatus are based on the same application concept. Since the method and apparatus solve similar problems, the implementation of the apparatus and method can refer to each other, and any repetitions will not be repeated.

[0109] FIG1 shows a schematic diagram of the architecture of a communication system provided by an embodiment of the present application. As shown in FIG1 , the communication system architecture may include a terminal device and a network device. Under the R19 mobility enhancement topic of the 3rd Generation Partnership Project (3GPP), conditional LTM switching (i.e., conditional L1 / L2 based inter-cell mobility, conditional inter-cell mobility management) will be supported. Unlike R18LTM, conditional LTM switching is triggered by the terminal device itself, and the network device cannot know which target cell the terminal device will switch to. In the present application, the terminal device can send auxiliary information of conditional LTM switching to the network device based on the network configuration information, so that the network device performs the cell switching preparation processing of the terminal device based on the auxiliary information. In this way, in the scenario of conditional LTM switching, the network device can perform the preparation work before the cell switching of the terminal device in advance, such as exchanging relevant information between the current serving cell and the target cell, or obtaining uplink synchronization in the candidate cell in advance, that is, obtaining the timing advance (TA) value in advance, thereby reducing the delay of the conditional LTM switching process and improving the overall performance of the switching.

[0110] The terminal device involved in the embodiments of the present application may be a device that provides voice and / or data connectivity to a user, a handheld device with wireless connection function, or other processing device connected to a wireless modem. In different systems, the name of the terminal device may also be different. For example, in a 5G system, the terminal device may be called User Equipment (UE). The wireless terminal device may be a USB storage device, other personal computer memory devices and a dongle, and may also communicate with one or more core networks (CN) via a radio access network (RAN). The wireless terminal device may be a mobile terminal device, such as a mobile phone (or "cellular" phone) and a computer with a mobile terminal device. The wireless terminal device may also be referred to as a system, a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, an access point, a remote terminal, an access terminal, a user terminal, a user agent, a user device, and a wireless access point and a router / modem that meet the limitations of this definition, etc., but is not limited in the embodiments of the present application.

[0111] The network device involved in the embodiments of the present application may be a device that provides a service cell for a terminal device, and the service cell includes a cell that currently provides services for the terminal device and also includes multiple candidate cells. In one example, the network device may be a base station, which may be referred to as an access point depending on the specific application scenario, or the network device may be a device in an access network that communicates with a wireless terminal device through one or more sectors on an air interface, or other names. The network device may be used to interchange received air frames with Internet Protocol (IP) packets, acting as a router between the wireless terminal device and the rest of the access network, wherein the rest of the access network may include an Internet Protocol (IP) communication network. The network device may also coordinate attribute management of the air interface.

[0112] In some exemplary embodiments, as shown in FIG2 , a data transmission method is provided, which is described by taking the method applied to the terminal device in FIG1 as an example. As shown in FIG2 , the method may include:

[0113] Step S201: Send auxiliary information of conditional LTM switching to the network device according to the network configuration information.

[0114] The auxiliary information of the conditional LTM handover includes at least one of TA advance acquisition auxiliary information and conditional LTM handover triggering auxiliary information.

[0115] In an embodiment of the present application, a network device may send network configuration information to a terminal device. After receiving the network configuration information, the terminal device may determine, based on the network configuration information, whether to allow reporting of auxiliary information for conditional LTM switching. If reporting of auxiliary information for conditional LTM switching is allowed, the terminal device may send the auxiliary information for conditional LTM switching to the network device. The auxiliary information may be sent via a Radio Resource Control (RCC) message or a Media Access Control (MAC) Channel Element (CE) message.

[0116] After receiving the auxiliary information, the network device can perform cell handover preparation processing for the terminal device based on the auxiliary information. For example, the network device can exchange relevant information between the current serving cell and the target cell, or perform early acquisition of uplink synchronization in the candidate cell, that is, obtain the Timing Advance (TA) value in advance; where the target cell is the cell to be accessed.

[0117] In the aforementioned data transmission method, TA advance acquisition of auxiliary information enables the network device to perform a TA advance acquisition process. Conditional LTM handover triggering auxiliary information enables the network device to transmit this conditional LTM handover triggering auxiliary information to the target cell of the terminal device. This allows the network device to pre-prepare the terminal device's cell handover, reducing the latency of the conditional LTM handover process and thereby improving overall handover performance.

[0118] In some embodiments, the TA obtains auxiliary information in advance and includes at least one or more items of the candidate cell configuration list, the candidate cell configuration identifier and the candidate cell beam list; the conditional LTM switching trigger auxiliary information includes at least one or more items of the cell identifier of the target cell of the terminal device and the beam information of the target cell.

[0119] In some embodiments, the network configuration information may include control indication information of auxiliary information of conditional LTM handover; or, the network configuration information includes candidate cell configuration information.

[0120] The control indication information may be control indication information for indicating whether to allow reporting of auxiliary information of conditional LTM switching. The candidate cell configuration information may be configuration information related to the candidate cell sent by the network device to the terminal device, and the specific content will be described in detail later.

[0121] In this embodiment, the terminal device can determine whether to allow reporting of auxiliary information based on network configuration information, thereby providing an implementation method for reporting auxiliary information.

[0122] In some embodiments, the control indication information may be control indication information for indicating whether the terminal device is allowed to report auxiliary information of a single candidate cell for conditional LTM switching; or, the control indication information may be control indication information for indicating whether the terminal device is allowed to report auxiliary information of all candidate cells for conditional LTM switching.

[0123] In some embodiments, step S201 sends auxiliary information of conditional LTM switching to the network device according to network configuration information, which may include: if the control indication information indicates that the auxiliary information of conditional LTM switching is allowed to be reported, sending the auxiliary information of conditional LTM switching to the network device.

[0124] In an embodiment of the present application, the terminal device may parse the control indication information and, if the control indication information indicates that the auxiliary information of the conditional LTM switching is allowed to be reported, send the auxiliary information of the conditional LTM switching to the network device. If the control indication information indicates that the auxiliary information of the conditional LTM switching is not allowed to be reported, the terminal does not report the auxiliary information of the conditional LTM switching.

[0125] In this embodiment, the terminal device determines whether to allow reporting of auxiliary information according to the control indication information, thereby providing an implementation method for reporting auxiliary information.

[0126] In the embodiment of the present application, the control indication information may include at least one or more of control indication information for the TA to obtain auxiliary information in advance and control indication information for conditional LTM switching triggering auxiliary information.

[0127] In one implementation, the control indication information for the TA to obtain auxiliary information in advance (which may be referred to as the first control indication information) includes at least one or more of the first indication information, the number of cells that the terminal device is allowed to report for the TA to obtain in advance, and the identification list of cells that the terminal device is allowed to report for the TA to obtain in advance; the first indication information is used to indicate whether the terminal device is allowed to report the TA to obtain auxiliary information in advance.

[0128] In some embodiments, the terminal device can determine whether the first control indication information includes any one of the number of cells that the TA reported by the terminal device is allowed to acquire in advance and the identification list of cells that the TA reported by the terminal device is allowed to acquire in advance. If any one of the information is included, the auxiliary information of the reporting condition LTM switching is determined.

[0129] In the case that the first control indication information only includes the first indication information, if the first indication information indicates that the terminal device is allowed to report the TA to obtain auxiliary information in advance, the terminal device can determine the auxiliary information for reporting conditional LTM switching based on the first indication information.

[0130] If the network configuration information does not include the first control indication information, or the first indication information indicates that reporting of the auxiliary information of the conditional LTM switching is not allowed, the terminal device determines not to report the auxiliary information of the conditional LTM switching.

[0131] In this embodiment, the control instruction information for the TA to obtain the auxiliary information in advance can be used to enable the terminal device to report the TA to obtain the auxiliary information in advance, thereby triggering the TA advance acquisition process.

[0132] In one implementation, the control indication information of the conditional LTM switching trigger auxiliary information (which may be referred to as the second control indication information) includes at least second indication information, and the second indication information is used to indicate whether the terminal device is allowed to report the conditional LTM switching trigger auxiliary information.

[0133] In some embodiments, the terminal may determine whether to report the conditional LTM handover triggering auxiliary information based on the second indication information. In some embodiments, the second indication information may also be used to indicate that the terminal device is permitted to report the conditional LTM handover triggering auxiliary information. The terminal may determine whether the second control indication information includes the second indication information. If the second indication information is included, the terminal may determine to report the conditional LTM handover triggering auxiliary information; if the second indication information is not included, the terminal may determine not to report the conditional LTM handover triggering auxiliary information.

[0134] In this embodiment, the control indication information of the conditional LTM handover triggering auxiliary information can be used to enable the terminal device to report the conditional LTM handover triggering auxiliary information, thereby triggering the exchange of relevant information between the current serving cell and the target cell.

[0135] In some embodiments, step S201 sends auxiliary information for conditional LTM switching to the network device based on the network configuration information, which may include: if the candidate cell configuration information represents that the layer 1 measurement report of the candidate cell and beam is not configured, or the candidate cell configuration information represents that the random access resources for TA early acquisition have been configured and the execution conditions for conditional LTM switching have been configured, then the TA early acquisition auxiliary information is sent to the network device.

[0136] In an embodiment of the present application, when the network configuration information is candidate cell configuration information, the terminal device determines whether to report TA advance acquisition auxiliary information based on the candidate cell configuration information. The candidate cell configuration information is used to indicate whether Layer 1 measurement reporting of the candidate cell and beam is configured, or the candidate cell configuration information is used to indicate whether random access resources for TA advance acquisition are configured and the execution conditions of conditional LTM switching have been configured.

[0137] If the candidate cell configuration information indicates that layer 1 measurement reporting of the candidate cell and beam is not configured, or the candidate cell configuration information indicates that random access resources for TA early acquisition have been configured and the execution conditions of conditional LTM switching have been configured, the terminal device determines to send TA early acquisition auxiliary information to the network device. Otherwise, the terminal device determines not to send TA early acquisition auxiliary information to the network device.

[0138] In this embodiment, the network device does not need to send control indication information to the terminal device. The terminal device can determine whether to report the TA to obtain auxiliary information in advance based on the candidate cell configuration information configured by the network device, thereby saving communication resources.

[0139] In some embodiments, the network configuration information further includes a reporting condition; accordingly, sending auxiliary information for conditional LTM switching to the network device includes: sending TA advance acquisition auxiliary information to the network device when the reporting condition is met.

[0140] In an embodiment of the present application, if the terminal device determines to report the TA advance acquisition auxiliary information, then when the reporting conditions are met, the TA advance acquisition auxiliary information is sent to the network device.

[0141] The reporting conditions include at least one or more of a preset reporting trigger event, a preset network parameter threshold, and preset device configuration information.

[0142] The preset reporting trigger event can be configured by technical personnel according to actual needs, and is not limited in the embodiments of the present application. The preset network parameter threshold can be determined based on the trigger event parameters of the conditional LTM switching. For example, an offset value can be configured based on the trigger event parameters, and the offset value can be a positive value or a negative value. The trigger event parameter can be a reference threshold based on time or a timer or based on the measured signal strength. By configuring an offset value, the trigger event of the reporting condition can be made earlier than the trigger event of the execution condition of the conditional LTM switching, so that the reporting TA obtains auxiliary information in advance before the conditional LTM switching. The preset device configuration information can be configured based on the specific implementation of the terminal device, and is not limited in the embodiments of the present application.

[0143] In this embodiment, the reporting conditions for the TA to obtain the auxiliary information in advance can be set according to business requirements, thereby achieving flexible control over the reporting of the auxiliary information.

[0144] In some embodiments, sending auxiliary information of conditional LTM handover to the network device includes: after determining the target cell, sending conditional LTM handover triggering auxiliary information to the network device.

[0145] In the embodiment of the present application, after the terminal device determines to report the conditional LTM handover triggering auxiliary information, the terminal device can evaluate the execution conditions of the conditional LTM handover and select a target cell. After determining the target cell, the terminal device sends the conditional LTM handover triggering auxiliary information to the network device.

[0146] In this embodiment, after determining the target cell, the terminal device can send conditional LTM switching trigger auxiliary information to the network device, so that the network device can perform pre-switching preparations, reducing the delay of the conditional LTM switching process and thus improving the overall switching performance.

[0147] In some embodiments, the method further includes: when the state of the acquired TA changes to an invalid state, if the conditional LTM switching is not triggered, sending auxiliary information of the conditional LTM switching to the network device.

[0148] In an embodiment of the present application, the terminal device can detect the status of the TA. When the status of the acquired TA changes to an invalid state, if the conditional LTM switching is not triggered, the terminal device again sends auxiliary information for the conditional LTM switching to the network device. In some embodiments, the terminal device can again send the TA early acquisition auxiliary information to the network device to trigger the network device to perform the TA early acquisition process.

[0149] When the terminal device triggers the conditional LTM switching, if the terminal device does not have the TA value of the target cell, or the TA value previously acquired in advance is in an invalid state, the LTM switching including the random access process is performed.

[0150] In this embodiment, before the conditional LTM handover is triggered, if the TA becomes invalid, the TA advance acquisition process can be re-executed, thereby improving the overall handover performance.

[0151] In some embodiments, the above method also includes: if the candidate cell configuration information represents the layer 1 measurement report of the configured candidate cell and beam, then the layer 1 measurement result of the candidate cell is sent to the network device, and the layer 1 measurement result of the candidate cell is used to trigger the network device to perform the TA early acquisition process.

[0152] In this embodiment of the present application, if the candidate cell configuration information indicates that Layer 1 measurement reporting for a configured candidate cell and beam is available, the terminal device determines that it does not need to report TA early acquisition assistance information. The terminal device may report the Layer 1 measurement results of the candidate cell. After receiving the Layer 1 measurement results of the candidate cell, the network device selects a candidate cell for which early TA acquisition can be performed and then initiates the TA early acquisition process.

[0153] In this embodiment, the network device can perform an advance TA acquisition process based on the measurement results reported by the terminal device, without the terminal device having to perform a random access process, thereby improving the overall performance of the handover.

[0154] In an exemplary embodiment, as shown in FIG3 , a data transmission method is provided, which is described by taking the method applied to the network device in FIG1 as an example. As shown in FIG3 , the method may include:

[0155] Step S301: receiving auxiliary information of conditional LTM switching sent by a terminal device.

[0156] The auxiliary information of the conditional LTM handover may include at least one of TA advance acquisition auxiliary information and conditional LTM handover triggering auxiliary information.

[0157] Step S302: Based on the auxiliary information of the conditional LTM handover, the cell handover preparation processing of the terminal device is performed.

[0158] In an embodiment of the present application, the network device can perform corresponding switching preparation processing based on the auxiliary information of the conditional LTM switching, thereby reducing the delay of the conditional LTM switching process and improving the overall performance of the switching.

[0159] In some embodiments, based on the auxiliary information of the conditional LTM switching, the cell switching preparation processing of the terminal device is performed, including: based on the TA advance acquisition auxiliary information, performing the TA advance acquisition process; and / or, sending the conditional LTM switching trigger auxiliary information to the target cell of the terminal device.

[0160] In this embodiment of the present application, the TA early acquisition assistance information includes at least one or more of a candidate cell configuration list, a candidate cell configuration identifier, and a candidate cell beam list. The network device can perform a TA early acquisition process based on the TA early acquisition assistance information. This allows the network device to perform the early TA acquisition process without requiring the terminal device to perform a random access process, thereby improving overall handover performance.

[0161] The conditional LTM handover triggering assistance information includes at least one or more items of the terminal device's target cell identifier and the target cell's beam information. The network device can send the conditional LTM handover triggering assistance information to the terminal device's target cell to prepare for the handover, thereby reducing the latency of the conditional LTM handover process.

[0162] In some embodiments, the above method also includes: receiving the layer 1 measurement results of the candidate cell sent by the terminal device; the layer 1 measurement results are sent by the terminal device when the candidate cell configuration information represents the layer 1 measurement report of the configured candidate cell and beam; according to the layer 1 measurement results of the candidate cell, executing the TA early acquisition process.

[0163] In this embodiment of the present application, if the candidate cell configuration information indicates that Layer 1 measurement reporting for a configured candidate cell and beam is available, the terminal device determines that it does not need to report TA early acquisition assistance information. The terminal device may report the Layer 1 measurement results of the candidate cell. After receiving the Layer 1 measurement results of the candidate cell, the network device selects a candidate cell for early TA acquisition based on the measurement results and then initiates a TA early acquisition process for the selected candidate cell.

[0164] In this embodiment, the network device can perform an early TA acquisition process based on the layer 1 measurement result, without the terminal device having to perform a random access process, thereby improving the overall performance of the handover.

[0165] In some embodiments, the method further includes: sending network configuration information to the terminal device; wherein the network configuration information includes control indication information for auxiliary information for conditional LTM handover or candidate cell configuration information; and the control indication information includes at least one or more of control indication information for the TA to obtain auxiliary information in advance and control indication information for conditional LTM handover triggering auxiliary information. The specific contents of the control indication information and candidate cell configuration information can be referred to the relevant explanations and descriptions on the terminal device side described above and will not be further described in this embodiment of the application.

[0166] In this embodiment, the network device may enable the terminal device to report auxiliary information by sending network configuration information, thereby performing preparations for cell switching of the terminal device in advance.

[0167] In an exemplary embodiment, as shown in FIG4 , a data transmission method example is provided, including:

[0168] Step S401: The network device sends network configuration information to the terminal device. The network configuration information includes control instruction information and reporting conditions for the TA to obtain auxiliary information in advance.

[0169] The control indication information for the TA to obtain the auxiliary information in advance includes at least one or more of the following: first indication information, the number of cells that the terminal device is allowed to report for the TA to obtain in advance, and a list of identifiers of cells that the terminal device is allowed to report for the TA to obtain in advance. The first indication information is used to indicate whether the terminal device is allowed to report the TA to obtain the auxiliary information in advance.

[0170] Step S402: The terminal device determines, based on the control indication information, that it is allowed to report the TA to obtain auxiliary information in advance.

[0171] Step S403: The terminal device evaluates whether the reporting conditions are met.

[0172] Step S404: When the reporting condition is met, the terminal device reports the TA advance acquisition auxiliary information to the network device.

[0173] The auxiliary information acquired in advance by the TA at least includes: one or more items of the candidate cell configuration list, the candidate cell configuration identifier, and the beam list of the candidate cell.

[0174] Step S405: The network device triggers a TA early acquisition process according to the TA early acquisition auxiliary information.

[0175] In some exemplary embodiments, as shown in FIG5 , another example of a data transmission method is provided, including:

[0176] Step S501: The network device sends network configuration information to the terminal device. The network configuration information includes candidate cell configuration information and reporting conditions.

[0177] Among them, the candidate cell configuration information is used to indicate whether the layer 1 measurement report of the candidate cell and beam is configured, or the candidate cell configuration information is used to indicate whether the random access resources for TA to obtain in advance are configured and the execution conditions of the conditional LTM switching have been configured.

[0178] In step S502, if the candidate cell configuration information indicates that the layer 1 measurement report of the candidate cell and beam is not configured, or the candidate cell configuration information indicates that the random access resources for TA to obtain in advance have been configured and the execution conditions of the conditional LTM switching have been configured, the terminal device determines that it is allowed to report the TA to the network device to obtain auxiliary information in advance.

[0179] Step S503: The terminal device evaluates whether the reporting conditions are met.

[0180] Step S504: When the reporting condition is met, the terminal device reports the TA advance acquisition auxiliary information to the network device.

[0181] The auxiliary information acquired in advance by the TA at least includes: one or more items of the candidate cell configuration list, the candidate cell configuration identifier, and the beam list of the candidate cell.

[0182] Step S505: The network device triggers a TA early acquisition process according to the TA early acquisition auxiliary information.

[0183] In some exemplary embodiments, as shown in FIG6 , another example of a data transmission method is provided, including:

[0184] Step S601: The network device sends network configuration information to the terminal device, where the network configuration information includes candidate cell configuration information.

[0185] In step S602, if the candidate cell configuration information indicates that the layer 1 measurement report of the candidate cell and beam has been configured, the terminal device determines that it is not necessary to report the TA to obtain auxiliary information in advance.

[0186] Step S603: The terminal device reports the layer 1 measurement result of the candidate cell to the network device.

[0187] Step S604: The network device selects a candidate cell for early TA acquisition based on the received layer 1 measurement results of the candidate cells.

[0188] Step S605: The network device initiates a TA early acquisition process.

[0189] In some exemplary embodiments, as shown in FIG7 , another example of a data transmission method is provided, including:

[0190] Step S701: The network device sends network configuration information to the terminal device. The network configuration information includes control indication information of conditional LTM handover triggering auxiliary information.

[0191] The control indication information of the conditional LTM switching trigger auxiliary information (which may be referred to as the second control indication information) at least includes the second indication information, which is used to indicate whether the terminal device is allowed to report the conditional LTM switching trigger auxiliary information.

[0192] Step S702: The terminal device determines the LTM switching trigger auxiliary information allowed to be reported according to the control indication information.

[0193] Step S703: The terminal device evaluates the execution conditions of the conditional LTM handover and selects a target cell.

[0194] Step S704: After determining the target cell, the terminal device reports conditional LTM handover triggering auxiliary information to the network device.

[0195] Among them, the conditional LTM switching trigger auxiliary information includes at least: one or more items of the cell identifier of the target cell of the terminal device and the beam information of the target cell.

[0196] Step S705: The network device sends the conditional LTM handover triggering assistance information to the target cell.

[0197] It should be understood that, although the various steps in the flowcharts involved in the various embodiments described above are displayed in sequence according to the instructions of the arrows, these steps are not necessarily executed in sequence in the order indicated by the arrows. Unless otherwise specified herein, there is no strict order restriction on the execution of these steps, and these steps can be executed in other orders. Moreover, at least a portion of the steps in the flowcharts involved in the various embodiments described above can include multiple steps or multiple stages, and these steps or stages are not necessarily executed and completed at the same time, but can be executed at different times, and the execution order of these steps or stages is not necessarily to be carried out in sequence, but can be executed in turn or alternately with other steps or at least a portion of steps or stages in other steps.

[0198] Based on the same inventive concept, embodiments of the present application further provide a data transmission device for implementing the aforementioned data transmission method. The implementation solution provided by this device is similar to the implementation solution described in the aforementioned method. Therefore, the specific limitations of one or more data transmission device embodiments provided below can be found in the above-mentioned limitations of the data transmission method and will not be further elaborated here.

[0199] In some exemplary embodiments, as shown in FIG8 , a data transmission apparatus 800 is provided, which is applied to a terminal device and includes:

[0200] The sending unit 801 is configured to send auxiliary information of conditional LTM switching to a network device according to network configuration information, wherein the auxiliary information of conditional LTM switching includes at least one of TA advance acquisition auxiliary information and conditional LTM switching triggering auxiliary information.

[0201] In some embodiments, the network configuration information includes control indication information or candidate cell configuration information of auxiliary information of conditional LTM handover;

[0202] The control indication information at least includes one or more of control indication information for the TA to obtain auxiliary information in advance and control indication information for conditional LTM handover triggering auxiliary information.

[0203] In some embodiments, the sending unit 801 is specifically configured to:

[0204] If the control indication information indicates that the auxiliary information of the conditional LTM switching is allowed to be reported, the auxiliary information of the conditional LTM switching is sent to the network device.

[0205] In some embodiments, the control indication information for the TA to obtain the auxiliary information in advance includes at least one or more of the following: first indication information, the number of cells that the TA is allowed to report in advance to obtain, and a list of identifiers of cells that the TA is allowed to report in advance to obtain. The first indication information is used to indicate whether the terminal device is allowed to report the TA to obtain the auxiliary information in advance.

[0206] The control indication information of the conditional LTM handover triggering auxiliary information includes at least second indication information, and the second indication information is used to indicate whether the terminal device is allowed to report the conditional LTM handover triggering auxiliary information.

[0207] In some embodiments, the sending unit 801 is specifically configured to:

[0208] If the candidate cell configuration information represents that the layer 1 measurement report of the candidate cell and beam is not configured, or the candidate cell configuration information represents that the random access resources for TA early acquisition have been configured and the execution conditions of the conditional LTM switching have been configured, then the TA early acquisition auxiliary information is sent to the network device.

[0209] In some embodiments, the network configuration information further includes a reporting condition; the sending unit 801 is specifically configured to:

[0210] When the reporting condition is met, sending the TA advance acquisition auxiliary information to the network device;

[0211] The reporting condition includes at least one or more of a preset reporting trigger event, a preset network parameter threshold, and preset device configuration information; wherein the preset network parameter threshold is determined according to the trigger event parameter of the conditional LTM switching.

[0212] In some embodiments, the sending unit 801 is specifically configured to:

[0213] After the target cell is determined, conditional LTM handover triggering assistance information is sent to the network device.

[0214] In some embodiments, the TA advance acquisition assistance information includes at least one or more of a candidate cell configuration list, a candidate cell configuration identifier, and a beam list of candidate cells;

[0215] The conditional LTM switching triggering auxiliary information includes at least one or more items of the cell identifier of the target cell of the terminal device and the beam information of the target cell.

[0216] In some embodiments, the control indication information is used to indicate whether the terminal device is allowed to report auxiliary information of a single candidate cell for conditional LTM switching, or whether the terminal device is allowed to report auxiliary information of all candidate cells for conditional LTM switching.

[0217] In some embodiments, the sending unit 801 is further configured to:

[0218] When the state of the acquired TA changes to an invalid state, if the conditional LTM switching is not triggered, auxiliary information of the conditional LTM switching is sent to the network device.

[0219] In some embodiments, the sending unit 801 is further configured to:

[0220] If the candidate cell configuration information represents a layer 1 measurement report of a configured candidate cell and beam, the layer 1 measurement result of the candidate cell is sent to the network device, and the layer 1 measurement result of the candidate cell is used to trigger the network device to perform a TA early acquisition process.

[0221] In some exemplary embodiments, as shown in FIG9 , a data transmission apparatus 900 is provided, which is applied to a network device and includes:

[0222] The receiving unit 901 is configured to receive auxiliary information of conditional LTM handover sent by a terminal device; wherein the auxiliary information of conditional LTM handover includes at least one of TA advance acquisition auxiliary information and conditional LTM handover triggering auxiliary information;

[0223] The processing unit 902 is used to perform cell handover preparation processing of the terminal device based on the auxiliary information of the conditional LTM handover.

[0224] In some embodiments, the processing unit 902 is specifically configured to:

[0225] performing a TA early acquisition process based on the TA early acquisition assistance information; and / or,

[0226] The conditional LTM handover triggering auxiliary information is sent to the target cell of the terminal device.

[0227] In some embodiments, the receiving unit 901 is further configured to:

[0228] receiving a layer 1 measurement result of a candidate cell sent by a terminal device; the layer 1 measurement result is sent by the terminal device when the candidate cell configuration information indicates a layer 1 measurement report of a configured candidate cell and beam;

[0229] The processing unit 902 is further configured to:

[0230] A TA early acquisition process is performed according to the layer 1 measurement result of the candidate cell.

[0231] In some embodiments, the apparatus further comprises:

[0232] A sending unit, configured to send network configuration information to the terminal device; wherein the network configuration information includes control indication information of auxiliary information of conditional LTM switching or candidate cell configuration information;

[0233] The control indication information includes at least one or more of control indication information for the TA to obtain auxiliary information in advance and control indication information for conditional LTM handover triggering auxiliary information.

[0234] Each module in the above-mentioned data transmission device can be implemented in whole or in part through software, hardware, or a combination thereof. Each module can be embedded in or independent of the processor in the computer device in the form of hardware, or can be stored in the memory of the computer device in the form of software, so that the processor can call and execute the corresponding operations of each module.

[0235] In some exemplary embodiments, the present application further provides a data transmission system, the system comprising a terminal device and a network device; wherein:

[0236] The terminal device is configured to send auxiliary information of the conditional LTM handover to the network device according to the network configuration information; wherein the auxiliary information of the conditional LTM handover includes at least one of TA advance acquisition auxiliary information and conditional LTM handover triggering auxiliary information;

[0237] The network device is used to receive the auxiliary information of the conditional LTM switching sent by the terminal device, and perform cell switching preparation processing of the terminal device based on the auxiliary information of the conditional LTM switching.

[0238] It should be noted that the division of units in the embodiments of the present application is schematic and is merely a logical functional division. In actual implementation, other division methods may be used. Furthermore, the functional units in the various embodiments of the present application may be integrated into a single processing unit, or each unit may exist physically separately, or two or more units may be integrated into a single unit. The aforementioned integrated units may be implemented in the form of hardware or software functional units.

[0239] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a processor-readable storage medium. Based on this understanding, the technical solution of the present application, or the part that contributes to the relevant technology, or all or part of the technical solution can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes a number of instructions for enabling a computer device (which can be a personal computer, server, or network device, etc.) or a processor to execute all or part of the steps of the methods of various embodiments of the present application.

[0240] It should be noted here that the above-mentioned device provided in the embodiment of the present application can implement all the method steps implemented in the above-mentioned method embodiment and can achieve the same technical effect. The parts and beneficial effects of this embodiment that are the same as those in the method embodiment will not be described in detail here.

[0241] In some exemplary embodiments, a communication device is provided, which may be a terminal device or a network device, and its internal structure may be as shown in Figure 10. The communication device includes a memory, a transceiver, and a processor.

[0242] A transceiver is used to receive and send data under the control of the processor.

[0243] In FIG10 , the bus architecture may include any number of interconnected buses and bridges, linking together various circuits of one or more processors represented by a processor and a memory represented by a memory. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and are therefore not further described herein. The bus interface provides an interface. The transceiver may be a plurality of components, i.e., a transmitter and a receiver, providing a unit for communicating with various other devices over a transmission medium, such as a wireless channel, a wired channel, an optical cable, or the like. The processor is responsible for managing the bus architecture and general processing, and the memory may store data used by the processor when performing operations.

[0244] The processor can be a central processing unit (CPU), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA) or a complex programmable logic device (CPLD), and the processor can also adopt a multi-core architecture.

[0245] The processor calls the program stored in the memory to execute any of the methods provided in the embodiments of the present application according to the obtained executable instructions. The processor and the memory can also be physically separated.

[0246] It should be noted here that the above-mentioned device provided in the embodiment of the present application can implement all the method steps implemented in the above-mentioned method embodiment and can achieve the same technical effect. The parts and beneficial effects of this embodiment that are the same as those in the method embodiment will not be described in detail here.

[0247] The physical device corresponding to the terminal device or network device is shown in Figure 10, which can implement all the method steps implemented by the method embodiment on the terminal device or network device side, and can achieve the same technical effect. The parts and beneficial effects of this embodiment that are the same as the method embodiment will not be described in detail here.

[0248] It should be noted here that the above-mentioned device provided in the embodiment of the present application can implement all the method steps implemented in the above-mentioned method embodiment and can achieve the same technical effect. The parts and beneficial effects of this embodiment that are the same as those in the method embodiment will not be described in detail here.

[0249] In some exemplary embodiments, a communication device is provided, which may be a terminal device, including a memory, a transceiver, and a processor: the memory is configured to store a computer program; the transceiver is configured to transmit and receive data under the control of the processor; and the processor is configured to read the computer program in the memory and perform the following operations:

[0250] According to the network configuration information, auxiliary information of the conditional LTM handover is sent to the network device, wherein the auxiliary information of the conditional LTM handover includes at least one of TA advance acquisition auxiliary information and conditional LTM handover triggering auxiliary information.

[0251] In some embodiments, the network configuration information includes control indication information or candidate cell configuration information of auxiliary information of conditional LTM handover;

[0252] The control indication information at least includes one or more of control indication information for the TA to obtain auxiliary information in advance and control indication information for conditional LTM handover triggering auxiliary information.

[0253] In some embodiments, the sending of auxiliary information for conditional LTM switching to the network device based on the network configuration information includes:

[0254] If the control indication information indicates that the auxiliary information of the conditional LTM switching is allowed to be reported, the auxiliary information of the conditional LTM switching is sent to the network device.

[0255] In some embodiments, the control indication information for the TA to obtain the auxiliary information in advance includes at least one or more of the following: first indication information, the number of cells that the TA is allowed to report in advance to obtain the auxiliary information, and a list of identifiers of cells that the TA is allowed to report in advance to obtain the auxiliary information; the first indication information is used to indicate whether the terminal device is allowed to report the TA to obtain the auxiliary information in advance;

[0256] The control indication information of the conditional LTM handover triggering auxiliary information includes at least second indication information, and the second indication information is used to indicate whether the terminal device is allowed to report the conditional LTM handover triggering auxiliary information.

[0257] In some embodiments, the sending of auxiliary information for conditional LTM switching to the network device based on the network configuration information includes:

[0258] If the candidate cell configuration information represents that the layer 1 measurement report of the candidate cell and beam is not configured, or the candidate cell configuration information represents that the random access resources for TA early acquisition have been configured and the execution conditions of the conditional LTM switching have been configured, then the TA early acquisition auxiliary information is sent to the network device.

[0259] In some embodiments, the network configuration information further includes a reporting condition; and the sending of the auxiliary information for the conditional LTM switching to the network device includes:

[0260] When the reporting condition is met, sending the TA advance acquisition auxiliary information to the network device;

[0261] The reporting condition includes at least one or more of a preset reporting trigger event, a preset network parameter threshold, and preset device configuration information; wherein the preset network parameter threshold is determined according to the trigger event parameter of the conditional LTM switching.

[0262] In some embodiments, the sending of auxiliary information for conditional LTM switching to the network device includes:

[0263] After the target cell is determined, conditional LTM handover triggering assistance information is sent to the network device.

[0264] In some embodiments, the TA advance acquisition assistance information includes at least one or more of a candidate cell configuration list, a candidate cell configuration identifier, and a beam list of candidate cells;

[0265] The conditional LTM switching triggering auxiliary information includes at least one or more items of the cell identifier of the target cell of the terminal device and the beam information of the target cell.

[0266] In some embodiments, the control indication information is used to indicate whether the terminal device is allowed to report auxiliary information of a single candidate cell for conditional LTM switching, or whether the terminal device is allowed to report auxiliary information of all candidate cells for conditional LTM switching.

[0267] In some embodiments, the processor is further configured to read the computer program in the memory and perform the following operations:

[0268] When the state of the acquired TA changes to an invalid state, if the conditional LTM switching is not triggered, auxiliary information of the conditional LTM switching is sent to the network device.

[0269] In some embodiments, the processor is further configured to read the computer program in the memory and perform the following operations:

[0270] If the candidate cell configuration information represents a layer 1 measurement report of a configured candidate cell and beam, the layer 1 measurement result of the candidate cell is sent to the network device, and the layer 1 measurement result of the candidate cell is used to trigger the network device to perform a TA early acquisition process.

[0271] In some exemplary embodiments, a communication device is provided, which may be a network device, including a memory, a transceiver, and a processor: the memory is configured to store a computer program; the transceiver is configured to transmit and receive data under the control of the processor; and the processor is configured to read the computer program in the memory and perform the following operations:

[0272] Receiving auxiliary information of conditional LTM switching sent by a terminal device; wherein the auxiliary information of conditional LTM switching includes at least one of TA advance acquisition auxiliary information and conditional LTM switching triggering auxiliary information;

[0273] Based on the auxiliary information of the conditional LTM handover, the cell handover preparation processing of the terminal equipment is performed.

[0274] In some embodiments, the performing of the cell handover preparation process of the terminal device based on the auxiliary information of the conditional LTM handover includes:

[0275] performing a TA early acquisition process based on the TA early acquisition assistance information; and / or,

[0276] The conditional LTM handover triggering auxiliary information is sent to the target cell of the terminal device.

[0277] In some embodiments, the processor is further configured to read the computer program in the memory and perform the following operations:

[0278] receiving a layer 1 measurement result of a candidate cell sent by a terminal device; the layer 1 measurement result is sent by the terminal device when the candidate cell configuration information indicates a layer 1 measurement report of a configured candidate cell and beam;

[0279] A TA early acquisition process is performed according to the layer 1 measurement result of the candidate cell.

[0280] In some embodiments, the processor is further configured to read the computer program in the memory and perform the following operations:

[0281] Sending network configuration information to the terminal device; wherein the network configuration information includes control indication information of auxiliary information of conditional LTM switching or candidate cell configuration information;

[0282] The control indication information includes at least one or more of control indication information for the TA to obtain auxiliary information in advance and control indication information for conditional LTM handover triggering auxiliary information.

[0283] In some embodiments, a processor-readable storage medium is provided, on which a computer program is stored. When the computer program is executed by a processor, the steps in the above-mentioned method embodiments are implemented.

[0284] In some embodiments, a computer program product is provided, including a computer program, which implements the steps in the above method embodiments when executed by a processor.

[0285] The processor-readable storage medium can be any available medium or data storage device that can be accessed by the processor, including but not limited to magnetic storage (such as floppy disks, hard disks, magnetic tapes, magneto-optical disks (MO)), optical storage (such as CDs, DVDs, BDs, HVDs, etc.), and semiconductor storage (such as ROMs, EPROMs, EEPROMs, non-volatile memories (NAND FLASH), solid-state drives (SSDs)), etc.

[0286] Those skilled in the art will appreciate that the embodiments of the present application can be provided as methods, systems, or computer program products. Therefore, the present application can adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment in combination with software and hardware. Moreover, the present application can adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to magnetic disk storage and optical storage, etc.) that contain computer-usable program code.

[0287] The present application is described with reference to the flowchart and / or block diagram of the method, device (system), and computer program product according to the embodiment of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, and the combination of the process and / or box in the flowchart and / or block diagram can be implemented by processor executable instructions. These processor executable instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device produce a device for implementing the function specified in one process or multiple processes in the flowchart and / or one box or multiple boxes in the block diagram.

[0288] These processor-executable instructions may also be stored in a processor-readable memory that can direct a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the processor-readable memory produce a product including an instruction device that implements the functions specified in one or more processes in the flowchart and / or one or more boxes in the block diagram.

[0289] Obviously, those skilled in the art may make various changes and modifications to this application without departing from the spirit and scope of this application. Thus, if these modifications and variations of this application fall within the scope of the claims of this application and their equivalents, this application is intended to include these modifications and variations.

[0290] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A data transmission method, wherein: The method is applied to a terminal device, and the method includes: According to the network configuration information, auxiliary information of the conditional LTM handover is sent to the network device, wherein the auxiliary information of the conditional LTM handover includes at least one of TA advance acquisition auxiliary information and conditional LTM handover triggering auxiliary information.

2. The method according to claim 1, wherein The network configuration information includes control indication information of auxiliary information of conditional LTM handover or candidate cell configuration information; The control indication information at least includes one or more of control indication information for the TA to obtain auxiliary information in advance and control indication information for conditional LTM handover triggering auxiliary information.

3. The method according to claim 2, wherein: The sending of auxiliary information for conditional LTM switching to the network device according to the network configuration information includes: If the control indication information indicates that the auxiliary information of the conditional LTM switching is allowed to be reported, the auxiliary information of the conditional LTM switching is sent to the network device.

4. The method according to claim 2, wherein: The control indication information for the TA to obtain the auxiliary information in advance includes at least one or more of the first indication information, the number of cells that the TA is allowed to obtain in advance reported by the terminal device, and the list of identifiers of cells that the TA is allowed to obtain in advance reported by the terminal device; The first indication information is used to indicate whether the terminal device is allowed to report the TA to obtain auxiliary information in advance; The control indication information of the conditional LTM handover triggering auxiliary information includes at least second indication information, and the second indication information is used to indicate whether the terminal device is allowed to report the conditional LTM handover triggering auxiliary information.

5. The method according to claim 2, wherein: The sending of auxiliary information for conditional LTM switching to the network device according to the network configuration information includes: If the candidate cell configuration information represents that the layer 1 measurement report of the candidate cell and beam is not configured, or the candidate cell configuration information represents that the random access resources for TA early acquisition have been configured and the execution conditions of the conditional LTM switching have been configured, then the TA early acquisition auxiliary information is sent to the network device.

6. The method according to any one of claims 1 to 5, wherein: The network configuration information also includes reporting conditions; the auxiliary information for sending conditional LTM switching to the network device includes: When the reporting condition is met, sending the TA advance acquisition auxiliary information to the network device; The reporting condition includes at least one or more of a preset reporting trigger event, a preset network parameter threshold, and preset device configuration information; wherein the preset network parameter threshold is determined according to the trigger event parameter of the conditional LTM switching.

7. The method according to any one of claims 1 to 5, wherein: The sending of the auxiliary information of the conditional LTM switching to the network device includes: After the target cell is determined, conditional LTM handover triggering assistance information is sent to the network device.

8. The method according to any one of claims 1 to 5, wherein: The TA acquires auxiliary information in advance including at least one or more of a candidate cell configuration list, a candidate cell configuration identifier, and a candidate cell beam list; The conditional LTM switching triggering auxiliary information includes at least one or more items of the cell identifier of the target cell of the terminal device and the beam information of the target cell.

9. The method according to any one of claims 2 to 5, wherein: The control indication information is control indication information used to indicate whether the terminal device is allowed to report auxiliary information of a single candidate cell for conditional LTM switching, or control indication information for whether the terminal device is allowed to report auxiliary information of all candidate cells for conditional LTM switching.

10. The method according to any one of claims 1 to 5, wherein: The method further comprises: When the state of the acquired TA changes to an invalid state, if the conditional LTM switching is not triggered, auxiliary information of the conditional LTM switching is sent to the network device.

11. The method according to claim 5, wherein: The method further comprises: If the candidate cell configuration information represents a layer 1 measurement report of a configured candidate cell and beam, the layer 1 measurement result of the candidate cell is sent to the network device, and the layer 1 measurement result of the candidate cell is used to trigger the network device to perform a TA early acquisition process.

12. A data transmission method, wherein: The method is applied to a network device, and the method includes: Receiving auxiliary information of conditional LTM switching sent by a terminal device; wherein the auxiliary information of conditional LTM switching includes at least one of TA advance acquisition auxiliary information and conditional LTM switching triggering auxiliary information; Based on the auxiliary information of the conditional LTM handover, the cell handover preparation processing of the terminal equipment is performed.

13. The method according to claim 12, wherein: The performing of the cell handover preparation process of the terminal device based on the auxiliary information of the conditional LTM handover includes: performing a TA early acquisition process based on the TA early acquisition assistance information; and / or, The conditional LTM handover triggering auxiliary information is sent to the target cell of the terminal device.

14. The method according to claim 12, wherein: The method further comprises: receiving a layer 1 measurement result of a candidate cell sent by a terminal device; the layer 1 measurement result is sent by the terminal device when the candidate cell configuration information indicates a layer 1 measurement report of a configured candidate cell and beam; A TA early acquisition process is performed according to the layer 1 measurement result of the candidate cell.

15. The method according to claim 12, wherein: The method further comprises: Sending network configuration information to the terminal device; wherein the network configuration information includes control indication information of auxiliary information of conditional LTM switching or candidate cell configuration information; The control indication information includes at least one or more of control indication information for the TA to obtain auxiliary information in advance and control indication information for conditional LTM handover triggering auxiliary information.

16. A data transmission device, wherein: The device is applied to a terminal device, and includes: The sending unit is used to send auxiliary information of conditional LTM switching to the network device according to the network configuration information, wherein the auxiliary information of conditional LTM switching includes at least one of TA advance acquisition auxiliary information and conditional LTM switching triggering auxiliary information.

17. A data transmission device, wherein: The device is applied to a network device, and includes: A receiving unit, configured to receive auxiliary information of conditional LTM switching sent by a terminal device; wherein the auxiliary information of conditional LTM switching includes at least one of TA advance acquisition auxiliary information and conditional LTM switching triggering auxiliary information; A processing unit is used to perform cell switching preparation processing of the terminal device based on the auxiliary information of the conditional LTM switching.

18. A communication device, wherein: Including memory, transceiver, processor: memory for storing computer programs; a transceiver, configured to transmit and receive data under the control of the processor; A processor is configured to read the computer program in the memory and perform the following operations: According to the network configuration information, auxiliary information of the conditional LTM handover is sent to the network device, wherein the auxiliary information of the conditional LTM handover includes at least one of TA advance acquisition auxiliary information and conditional LTM handover triggering auxiliary information.

19. The communication device according to claim 18, wherein The network configuration information includes control indication information of auxiliary information of conditional LTM handover or candidate cell configuration information; The control indication information at least includes one or more of control indication information for the TA to obtain auxiliary information in advance and control indication information for conditional LTM handover triggering auxiliary information.

20. The communication device according to claim 19, wherein The sending of auxiliary information for conditional LTM switching to the network device according to the network configuration information includes: If the control indication information indicates that the auxiliary information of the conditional LTM switching is allowed to be reported, the auxiliary information of the conditional LTM switching is sent to the network device.

21. The communication device according to claim 19, wherein The control indication information for the TA to obtain the auxiliary information in advance includes at least one or more of the first indication information, the number of cells that the TA is allowed to obtain in advance reported by the terminal device, and the list of identifiers of cells that the TA is allowed to obtain in advance reported by the terminal device; The first indication information is used to indicate whether the terminal device is allowed to report the TA to obtain auxiliary information in advance; The control indication information of the conditional LTM handover triggering auxiliary information includes at least second indication information, and the second indication information is used to indicate whether the terminal device is allowed to report the conditional LTM handover triggering auxiliary information.

22. The communication device according to claim 19, wherein The sending of auxiliary information for conditional LTM switching to the network device according to the network configuration information includes: If the candidate cell configuration information represents that the layer 1 measurement report of the candidate cell and beam is not configured, or the candidate cell configuration information represents that the random access resources for TA early acquisition have been configured and the execution conditions of the conditional LTM switching have been configured, then the TA early acquisition auxiliary information is sent to the network device.

23. The communication device according to claim 18, wherein The network configuration information also includes reporting conditions; the auxiliary information for sending conditional LTM switching to the network device includes: When the reporting condition is met, sending the TA advance acquisition auxiliary information to the network device; The reporting condition includes at least one or more of a preset reporting trigger event, a preset network parameter threshold, and preset device configuration information; wherein the preset network parameter threshold is determined according to the trigger event parameter of the conditional LTM switching.

24. The communication device according to claim 18, wherein The sending of the auxiliary information of the conditional LTM switching to the network device includes: After the target cell is determined, conditional LTM handover triggering assistance information is sent to the network device.

25. The communication device according to claim 18, wherein The TA acquires auxiliary information in advance including at least one or more of a candidate cell configuration list, a candidate cell configuration identifier, and a candidate cell beam list; The conditional LTM switching triggering auxiliary information includes at least one or more items of the cell identifier of the target cell of the terminal device and the beam information of the target cell.

26. The communication device according to claim 19, wherein The control indication information is control indication information used to indicate whether the terminal device is allowed to report auxiliary information of a single candidate cell for conditional LTM switching, or control indication information for whether the terminal device is allowed to report auxiliary information of all candidate cells for conditional LTM switching.

27. The communication device according to claim 18, wherein The processor is further configured to read the computer program in the memory and perform the following operations: When the state of the acquired TA changes to an invalid state, if the conditional LTM switching is not triggered, auxiliary information of the conditional LTM switching is sent to the network device.

28. The communication device according to claim 22, wherein The processor is further configured to read the computer program in the memory and perform the following operations: If the candidate cell configuration information represents a layer 1 measurement report of a configured candidate cell and beam, the layer 1 measurement result of the candidate cell is sent to the network device, and the layer 1 measurement result of the candidate cell is used to trigger the network device to perform a TA early acquisition process.

29. A communication device, wherein: Including memory, transceiver, processor: memory for storing computer programs; a transceiver, configured to transmit and receive data under the control of the processor; A processor is configured to read the computer program in the memory and perform the following operations: Receiving auxiliary information of conditional LTM switching sent by a terminal device; wherein the auxiliary information of conditional LTM switching includes at least one of TA advance acquisition auxiliary information and conditional LTM switching triggering auxiliary information; Based on the auxiliary information of the conditional LTM handover, the cell handover preparation processing of the terminal equipment is performed.

30. The communication device according to claim 29, wherein The performing of the cell handover preparation process of the terminal device based on the auxiliary information of the conditional LTM handover includes: performing a TA early acquisition process based on the TA early acquisition assistance information; and / or, The conditional LTM handover triggering auxiliary information is sent to the target cell of the terminal device.

31. The communication device according to claim 29, wherein The processor is further configured to read the computer program in the memory and perform the following operations: receiving a layer 1 measurement result of a candidate cell sent by a terminal device; the layer 1 measurement result is sent by the terminal device when the candidate cell configuration information indicates a layer 1 measurement report of a configured candidate cell and beam; A TA early acquisition process is performed according to the layer 1 measurement result of the candidate cell.

32. The communication device according to claim 29, wherein The processor is further configured to read the computer program in the memory and perform the following operations: Sending network configuration information to the terminal device; wherein the network configuration information includes control indication information of auxiliary information of conditional LTM switching or candidate cell configuration information; The control indication information includes at least one or more of control indication information for the TA to obtain auxiliary information in advance and control indication information for conditional LTM handover triggering auxiliary information.

33. A data transmission system, comprising a terminal device and a network device; wherein: The terminal device is configured to send auxiliary information of the conditional LTM handover to the network device according to the network configuration information; wherein the auxiliary information of the conditional LTM handover includes at least one of TA advance acquisition auxiliary information and conditional LTM handover triggering auxiliary information; The network device is used to receive the auxiliary information of the conditional LTM switching sent by the terminal device, and perform cell switching preparation processing of the terminal device based on the auxiliary information of the conditional LTM switching.

34. A computer-readable storage medium having a computer program stored thereon, wherein: When the computer program is executed by a processor, the steps of the method of any one of claims 1 to 11 or claims 12 to 15 are implemented.

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