Wireless communication method and wireless communication device

Abstract

Provided in the embodiments of the present application is a wireless communication method, which is executed on a first network node. The method comprises: sending a configuration message to a terminal device, wherein the configuration message comprises conditional handover (CHO)-related configuration information for a plurality of second time periods after a first time period, the first time period is a duration during which a first network node serves the terminal device, and the CHO-related configuration information is used for indicating a CHO in which the terminal device executes, during each second time period, a handover to a second network node corresponding to the second time period. Thus, a terminal device can receive the CHO-related configuration information for a plurality of future continuous time periods in advance, and does not need to perform CHO-related signaling interaction with a network side during a plurality of subsequent time periods, such that signaling overheads can be reduced.

Description

Wireless communication method and wireless communication device Technical Field

[0001] The embodiments of the present application relate to the field of mobile communication technologies, and in particular to a wireless communication method, a wireless communication device, a chip, a computer-readable storage medium, and a computer program product. Background Art

[0002] 5G NTN (5G Non-Terrestrial Network) is an emerging wireless communication technology that uses satellites, high-altitude drones, or other non-terrestrial devices as communication infrastructure to support wide-area, high-speed, low-latency wireless communication transmission. The goal of 5G NTN is to provide universally accessible wireless connectivity worldwide to support large-scale data transmission, high-speed mobile communications, and various application scenarios including the Internet of Things.

[0003] One of the hallmarks of 5G NTN is its use of non-terrestrial equipment as transmission nodes to enhance transmission capacity and coverage, overcoming the limitations of traditional terrestrial networks in wide-area communications and addressing some of their shortcomings. By deploying high-altitude equipment such as satellites, 5G NTN can support communications needs over a wide range of areas, including remote areas, oceans, and airspace where traditional terrestrial communications struggle to reach, thereby providing seamless global communications. Depending on the specific technical implementation, 5G NTN can also offer low transmission latency, making it suitable for applications with high real-time requirements, such as the Internet of Things, autonomous driving, and remote collaboration.

[0004] Summary of the Invention

[0005] Embodiments of the present application provide a wireless communication method, a wireless communication device, a chip, a computer-readable storage medium, and a computer program product.

[0006] A wireless communication method provided by an embodiment of the present application is executed on a first network node, wherein the method includes: sending a configuration message to a terminal device, wherein the configuration message includes conditional switching CHO-related configuration information for multiple second time periods after a first time period, the first time period being the duration for which the first network node serves the terminal device, and the CHO-related configuration information is used to instruct the terminal device to perform conditional switching CHO to the second network node corresponding to the second time period during each second time period.

[0007] A wireless communication method provided by an embodiment of the present application is executed on a terminal device, wherein the method includes: receiving a configuration message from a first network node, wherein the configuration message includes conditional switching CHO-related configuration information for multiple second time periods after a first time period, the first time period being the duration for which the first network node serves the terminal device, and the CHO-related configuration information is used to instruct the terminal device to perform conditional switching CHO to the second network node corresponding to the second time period during each second time period.

[0008] Through the above technical solution, the terminal device can receive CHO-related configuration information for several future consecutive time periods in advance. In the subsequent multiple time periods, there is no need to interact with the network side for CHO-related signaling, thereby saving signaling overhead.

[0009] An embodiment of the present application provides a wireless communication method, which is executed on at least one network node, wherein the method includes: sending a configuration message to a terminal device served by the network node acting as a service node, the configuration message including conditional switching CHO-related configuration information for multiple second time periods after a first time period in which the service node serves the terminal device, and during any of the second time periods, one of the multiple network nodes corresponding to the second time period acts as the service node and serves the terminal device.

[0010] An embodiment of the present application provides a wireless communication method, which is executed on a terminal device, wherein the method includes: receiving a configuration message from a network node acting as a service node, the configuration message including conditional switching CHO-related configuration information for multiple second time periods after a first time period in which the service node serves the terminal device, and during any of the second time periods, one of the multiple network nodes corresponding to the second time period acts as the service node and serves the terminal device.

[0011] Through the above technical solution, while taking factors such as the capacity of the relay equipment and limited communication distance into consideration, the terminal device can receive the relay equipment switching-related configuration information for several future continuous time periods in advance. In the subsequent multiple time periods, there is no need to interact with the network side for related signaling, thereby saving signaling overhead.

[0012] A wireless communication method provided by an embodiment of the present application is executed on a first relay device, wherein the method includes: sending a configuration message to a terminal device, wherein the configuration message includes relay device switching-related configuration information for multiple second time periods after a first time period, the first time period being the duration for the first relay device to relay communication between the terminal device and a network node, and the relay device switching-related configuration information is used to instruct the terminal device to perform relay device switching corresponding to the second time period during each second time period.

[0013] A wireless communication method provided by an embodiment of the present application is executed on a terminal device, wherein the method includes: receiving a configuration message from a first relay device, wherein the configuration message includes relay device switching-related configuration information for multiple second time periods after a first time period, the first time period being the duration for the first relay device to relay communication between the terminal device and a network node, and the relay device switching-related configuration information is used to instruct the terminal device to perform relay device switching corresponding to the second time period during each of the second time periods.

[0014] Through the above technical solution, the terminal device can receive the relay device switching related configuration information for several future continuous time periods in advance. In the subsequent multiple time periods, there is no need to interact with the network side for related signaling, thereby saving signaling overhead.

[0015] A wireless communication method provided by an embodiment of the present application is executed on at least one relay device, wherein the method includes: sending a configuration message to a terminal device served by a relay device acting as a service relay device, the configuration message including relay device switching-related configuration information for multiple second time periods after a first time period in which the service relay device serves the terminal device, and during any of the second time periods, one of the multiple relay devices corresponding to the second time period acts as the service relay device and serves the terminal device.

[0016] A wireless communication method provided by an embodiment of the present application is executed on a terminal device, wherein the method includes: receiving a configuration message from a relay device acting as a service relay device, the configuration message including relay device switching-related configuration information for multiple second time periods after a first time period in which the service relay device serves the terminal device, and during any of the second time periods, one of the multiple relay devices corresponding to the second time period acts as the service relay device and serves the terminal device.

[0017] Through the above technical solution, while taking factors such as the capacity of the relay equipment and limited communication distance into consideration, the terminal device can receive the relay equipment switching-related configuration information for several future continuous time periods in advance. In the subsequent multiple time periods, there is no need to interact with the network side for related signaling, thereby saving signaling overhead.

[0018] An embodiment of the present application provides a first network node, comprising: a processor and a memory, wherein the memory is used to store a computer program, and the processor is used to call and run the computer program stored in the memory to execute the above-mentioned wireless communication method.

[0019] The terminal device provided in an embodiment of the present application includes a processor and a memory. The memory is used to store a computer program, and the processor is used to call and run the computer program stored in the memory to perform the above-mentioned wireless communication method.

[0020] The first relay device provided in an embodiment of the present application includes a processor and a memory, wherein the memory is used to store a computer program, and the processor is used to call and run the computer program stored in the memory to perform the above-mentioned wireless communication method.

[0021] The network node set provided in the embodiment of the present application includes multiple network nodes and includes a processor and a memory. The memory is used to store computer programs, and the processor is used to call and run the computer programs stored in the memory to perform the above-mentioned wireless communication method.

[0022] The relay device set provided in the embodiment of the present application includes multiple relay devices and includes a processor and a memory. The memory is used to store a computer program, and the processor is used to call and run the computer program stored in the memory to perform the above-mentioned wireless communication method.

[0023] The chip provided in the embodiment of the present application is used to implement the above-mentioned wireless communication method.

[0024] Specifically, the chip includes: a processor, which is used to call and run a computer program from a memory, so that a device equipped with the chip executes the above-mentioned wireless communication method.

[0025] The computer-readable storage medium provided in an embodiment of the present application is used to store a computer program, which enables a computer to execute the above-mentioned wireless communication method.

[0026] The computer program product provided in the embodiments of the present application includes computer program instructions, which enable a computer to execute the above-mentioned wireless communication method. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation of the present application. A person of ordinary skill in the art can derive other drawings based on these drawings without inventive effort. In the drawings:

[0028] FIG1 is a schematic diagram of a wireless communication system architecture provided in an embodiment of the present application;

[0029] FIG2 is a signaling diagram of an exemplary process of sequential conditional switching in an example NTN network provided by an embodiment of the present application.

[0030] FIG3 is a signaling diagram of an exemplary process of sequential conditional switching in an example NTN network provided by an embodiment of the present application.

[0031] FIG4 is a signaling diagram of an exemplary process of sequential conditional switching in an example NTN network provided by an embodiment of the present application.

[0032] FIG5 is a signaling diagram of an exemplary process of sequential conditional switching in an example NTN network provided in an embodiment of the present application.

[0033] FIG6 is a signaling diagram of an exemplary process of sequential conditional switching in an example NTN network provided in an embodiment of the present application.

[0034] FIG7 is a signaling diagram of an exemplary process of sequential conditional switching in an example NTN network provided in an embodiment of the present application.

[0035] FIG8 is a schematic flow chart of a wireless communication method according to an embodiment of the present application;

[0036] FIG9 is a schematic diagram of a flow chart of a wireless communication method provided in an embodiment of the present application;

[0037] FIG10 is a schematic diagram of an exemplary scenario involving handover of a serving node / relay device in an exemplary wireless communication network provided in an embodiment of the present application;

[0038] FIG11 is a schematic diagram of another exemplary scenario involving handover of a serving node / relay device in an exemplary wireless communication network provided in an embodiment of the present application;

[0039] FIG12 is a schematic diagram of a flow chart of a wireless communication method provided in an embodiment of the present application;

[0040] FIG13 is a schematic diagram of a flow chart of a wireless communication method provided in an embodiment of the present application;

[0041] FIG14 is a schematic diagram of a flow chart of a wireless communication method provided in an embodiment of the present application;

[0042] FIG15 is a schematic diagram of a flow chart of a wireless communication method provided in an embodiment of the present application;

[0043] FIG16 is a schematic diagram of a flow chart of a wireless communication method provided in an embodiment of the present application;

[0044] FIG17 is a schematic diagram of a flow chart of a wireless communication method provided in an embodiment of the present application;

[0045] FIG18 is a schematic structural diagram of a wireless communication device provided in an embodiment of the present application;

[0046] FIG19 is a schematic structural diagram of a chip according to an embodiment of the present application;

[0047] Figure 20 is a schematic block diagram of a wireless communication system provided by an embodiment of the present application. DETAILED DESCRIPTION

[0048] The following will describe the technical solutions in the embodiments of this application in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0049] The technical solutions of the embodiments of the present application can be applied to various wireless communication systems, such as: Long Term Evolution (LTE) system, LTE Frequency Division Duplex (FDD) system, LTE Time Division Duplex (TDD) system, 5G communication system or future wireless communication systems, etc.

[0050] Exemplarily, a wireless communication system 100 used in an embodiment of the present application is shown in FIG1 . The wireless communication system 100 may include a base station 110, which may be a device that communicates with a user equipment 120 (User Equipment, UE). The base station 110 may provide communication coverage for a specific geographical area and may communicate with user equipment located within the coverage area. Optionally, the base station 110 may be a next-generation base station (Next Generation Node B, gNB or gNodeB) in 5G NR, an evolved base station (Evolutional Node B, eNB or eNodeB) in an LTE system, or a general Node B, or the base station may be a mobile switching center, a relay station, an access point, an in-vehicle device, a wearable device, a hub, a switch, a bridge, a router, a network-side device in a 5G network, or a base station in a future communication system, etc. This document does not impose any restrictions on this.

[0051] The wireless communication system 100 also includes at least one user equipment 120 located within the coverage area of ​​the base station 110. As used herein, "user equipment" includes, but is not limited to, a device configured to receive / send communication signals via a wired connection, such as a Public Switched Telephone Network (PSTN), a Digital Subscriber Line (DSL), a digital cable, a direct cable connection; and / or another data connection / network; and / or via a wireless interface, such as a cellular network, a Wireless Local Area Network (WLAN), a digital television network such as a DVB-H network, a satellite network, an AM-FM broadcast transmitter; and / or another user equipment; and / or an Internet of Things (IoT) device. A user equipment configured to communicate via a wireless interface may be referred to as a "wireless communication terminal," "wireless terminal," or "mobile terminal." Examples of mobile terminals include, but are not limited to, satellite or cellular telephones; Personal Communications System (PCS) terminals that can combine cellular radiotelephones with data processing, fax, and data communication capabilities; PDAs that can include radiotelephones, pagers, Internet / Intranet access, web browsers, notepads, calendars, and / or Global Positioning System (GPS) receivers; and conventional laptop and / or palmtop receivers or other electronic devices that include radiotelephone transceivers. User equipment can refer to access terminals, subscriber units, subscriber stations, mobile stations, mobile stations, remote stations, remote user equipment, mobile devices, wireless communication devices, or user agents. An access terminal can be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a handheld device with wireless communication capabilities, a computing device or other processing device connected to a wireless modem, an in-vehicle device, a wearable device, a user device in a 5G network, or a user device in a future evolved PLMN, etc.

[0052] In some embodiments of the present invention, the user equipment 120 receives a configuration message from the base station 110 (the base station 110 acts as a first network node, for example), wherein the configuration message includes conditional switching CHO-related configuration information for multiple second time periods after the first time period, the first time period being the duration for which the base station 110 serves the user equipment 120, and the CHO-related configuration information is used to instruct the user equipment 120 to perform conditional switching CHO to the second network node corresponding to the second time period during each second time period. In this way, the terminal device can receive CHO-related configuration information for several future consecutive time periods in advance, and in multiple subsequent time periods, there is no need to interact with the network side for CHO-related signaling, thereby saving signaling overhead.

[0053] In some embodiments of the present invention, the base station 110 (the base station 110 acts as a first network node, for example) sends a configuration message to the user equipment 120, wherein the configuration message includes conditional switching CHO-related configuration information for multiple second time periods after the first time period, the first time period being the duration for which the first network node serves the terminal device, and the CHO-related configuration information is used to instruct the terminal device to perform conditional switching CHO to the second network node corresponding to the second time period during each second time period. In this way, the terminal device can receive CHO-related configuration information for several future consecutive time periods in advance, and in multiple subsequent time periods, there is no need to interact with the network side for CHO-related signaling, thereby saving signaling overhead.

[0054] Optionally, the user equipments 120 may perform device-to-device (D2D) communication with each other.

[0055] Optionally, the 5G communication system or 5G network may also be referred to as a New Radio (NR) system or NR network.

[0056] The wireless communication system 100 also includes a network 130. Network 130 may be an IP mobile communication network operated by a mobile communication operator. For example, network 130 may be a core network used by a mobile communication operator that operates and manages the wireless communication system 100, or a core network used by a virtual mobile communication operator such as an MVNO (Mobile Virtual Network Operator).

[0057] The network 130 can be connected to the base station 110 and serve as a relay device for transmitting user data. The user equipment 120 transmits and receives user data via the network 130. It should be noted that the communication of user data is not limited to IP communication and can also be non-IP communication.

[0058] FIG1 exemplarily shows a base station 110 , two user equipments 120 and a network 130 . Optionally, the wireless communication system 100 may include multiple base stations and each base station may include other numbers of user equipments within its coverage area, which is not limited in the embodiments of the present application.

[0059] The multiple base stations include, for example, a first base station, a second base station, and the like. The first base station is, for example, the current serving base station of the cell where the user equipment 120 is located. The second base station is, for example, the serving base station of the cell where the user equipment 120 is located at the next moment. In some embodiments of the present invention, assuming that in the case where the base station is on a satellite or the satellite acts as a relay device, the moving speed of the user equipment 120 is negligible compared to the moving speed of the onboard base station and / or the relay device (e.g., satellite), so that the candidate base stations and / or candidate relay devices corresponding to each time period after the current time period in which the user equipment is served by the current serving base station (e.g., the first base station) can be known based on information from the operator, satellite orbit parameters, and / or ephemeris. This prior knowledge makes it possible to divide the time after the current time period so as to divide the subsequent time periods and thereby obtain the candidate base stations and / or candidate relay devices corresponding to each subsequent time period.

[0060] In some embodiments of the present invention, the base station may be, for example,

[0061] Optionally, the wireless communication system 100 may further include other network entities such as a network controller, a mobility management entity, and a network element, which is not limited in this embodiment of the present application. For example, the network 130 may include other network entities such as a network controller, a mobility management entity, and a network element, which is not limited in this embodiment of the present application.

[0062] It should be understood that in the embodiments of the present application, a device having wireless communication capabilities in a network / system may be referred to as a wireless communication device. Taking the wireless communication system 100 shown in Figure 1 as an example, the wireless communication device may include a base station 110 having communication capabilities, a user device 120, and a network 130. The base station 110 and the user device 120 may be the specific devices described above and will not be described in detail here. The wireless communication device may also include other devices (network 130) in the wireless communication system 100. For example, the network 130 may include other network entities such as a network controller and a mobility management entity, which is not limited in the embodiments of the present application.

[0063] It should be understood that the terms "system" and "network" are often used interchangeably herein. The term "and / or" is simply a description of an association between related objects, indicating that three possible relationships exist. For example, "A and / or B" can represent: A exists alone, A and B exist simultaneously, or B exists alone. Furthermore, the character " / " generally indicates that the related objects are in an "or" relationship.

[0064] To facilitate understanding of the technical solutions of the embodiments of the present application, the technical solutions related to the embodiments of the present application are described below.

[0065] Before describing the present invention in further detail, the following glossary is provided for a better understanding of the present invention.

[0066] Non-Terrestrial Network (NTN): A wireless communication network that uses satellites, high-altitude drones, or other non-terrestrial devices as its communication infrastructure. 5G NTN refers to a non-terrestrial network implemented using fifth-generation wireless communication technology.

[0067] Handover (HO): Generally refers to the seamless handover of a mobile device from one base station (or satellite) to another during a communication process to maintain continuity of the communication connection. HO is a key function in mobile communication systems, enabling mobile devices to maintain a connection without interruption during mobility.

[0068] By way of example and not limitation, HO typically occurs in the following situations.

[0069] The mobile device needs to switch to a new base station / cell. This may be because the mobile device leaves the coverage of the current base station / cell, the signal strength of the current base station decreases, the communication quality deteriorates, or the distance between the mobile device and the current base station increases.

[0070] The current base station is overloaded. The current base station can no longer provide good service quality for mobile devices, and the mobile device needs to switch to a base station / cell with a lower load.

[0071] Switching to another frequency band or cell can provide better service, for example, supporting higher data rates or lower latency.

[0072] When a mobile device switches from a cellular network to an NTN (e.g., a satellite network), or switches from an NTN (e.g., a satellite network) back to a cellular network.

[0073] Switching between different technologies, different operators, or different network types on a mobile device, for example, from 2G to 3G, from 3G to 4G, from 4G to 5G, etc.

[0074] The goal of HO is to ensure communication continuity and quality, so that mobile devices (such as user equipment (UE)) do not experience communication interruptions or degradation during mobility. This requires signal measurement, neighbor cell search, handover decision-making, and handover execution to ensure a smooth HO process.

[0075] In a 5G NTN network, from the perspective of a mobile device (e.g., UE), HO can be a switch from one NTN transmission node (e.g., a satellite) to another NTN transmission node (e.g., another satellite), but it does not exclude a switch from an NTN transmission node (e.g., a satellite) to a terrestrial network (TN) transmission node (e.g., a base station, another UE (e.g., a sidelink communication scenario)), etc.

[0076] Network (NW): As used herein, NW may refer to different entities. By way of example and not limitation, these entities may include any of the following.

[0077] Core Network (CN): This refers to the core part of a wireless communication network (e.g., 5G NTN), responsible for processing and forwarding user data traffic and providing a central node supporting network management and control functions.

[0078] Base Station (BS): A base station is a device in a wireless communication network that communicates with wireless devices (e.g., mobile devices such as UE) and provides wireless coverage and connectivity. A base station typically consists of a set of antennas, radio frequency equipment, transmission equipment, and signal processing units. It communicates with wireless devices using wireless signals and connects to other networks (e.g., other base stations) through the CN.

[0079] Gateway (GW): A key device or node connecting wireless communication networks (such as 5G NTN) with other networks, connecting and forwarding data. A GW provides routing, protocol conversion, security control, and traffic management. A GW can be a packet data gateway (PGW) or other similar device.

[0080] Satellite: In 5G NTN networks, satellites serve as non-terrestrial transmission nodes. As a form of NTN communications, satellite communications transmit data through a direct connection between satellites and terminal devices. This eliminates the limitations of base station coverage, enabling 5G networks to cover mobile scenarios such as mountainous areas, oceans, aircraft, and vehicles, providing a wider range of services for various vertical industries and mobile applications.

[0081] In wireless communications, HO is an important concept used to provide better services to each terminal. The network can instruct the handover operation (e.g., whether to perform HO and when to perform HO) based on the measurement results reported by the UE.

[0082] In related technologies, UEs report measurement results in two ways: periodic reporting and event reporting. Event reporting refers to reporting once the UE finds that the current situation meets the conditions specified in the protocol. The "conditions" here refer to the various "events" specified in the relevant protocol.

[0083] In R17 and R18, the NTN supports different types of conditional handover (CHO). The UE can perform CHO on a candidate cell based on different conditions. For example, these conditions may include, but are not limited to, RRM measurement-based event A4 (CondEventA4), time-based triggering conditions (CondEventT1), and location-based triggering conditions (CondEventD1).

[0084] CondEvent A4 is a handover event used to switch a mobile device between different transmission nodes. This handover is triggered based on the conditional judgment of the radio resource management (RRM) measurement results.

[0085] Event A4 conditional handover based on RRM measurement (ie, event A4 conditional handover) is generally based on measurements of the following aspects.

[0086] Signal strength measurement: By measuring the signal strength of different transmission nodes, it is determined whether there is a more suitable transmission node to switch to.

[0087] Channel quality measurement: By measuring the channel quality indicators (such as signal-to-noise ratio and bit error rate) of different transmission nodes, it is evaluated whether there is a better channel to switch to.

[0088] Latency measurement: By measuring the latency between different transmission nodes, it is determined whether there is a transmission node with lower transmission latency that can be switched to provide a faster response time.

[0089] Based on these measurement results and preset thresholds, the mobile device can autonomously determine whether to initiate an Event A4 handover. Once the handover conditions are met, the mobile device triggers the handover process, establishing a new connection with a different transmission node and disconnecting from the original transmission node, thereby completing the handover. Event A4 handover allows the mobile device to select a preferred transmission node, optimizing wireless resource utilization and providing better signal quality and transmission performance.

[0090] In addition to CondEvent A4, time-based trigger conditions (CondEventT1) and location-based trigger conditions (CondEventD1) are also introduced for NTN. CondEventT1 and CondEventD1 provide different event reporting mechanisms in 5G NTN, providing flexible and diverse management and optimization options for the network. CondEventT1 is a condition for triggering CHO based on a timer. For example, when the timer reaches a preset threshold, CHO can be triggered. This triggering condition does not depend on measurement results or other conditions, but is based on, for example, changes in UE measurement time. CondEventD1 is a condition for triggering CHO based on the location information of the device. This triggering condition depends on the location information of the device and the definition of the location area. For example, the general process involved in CondEventD1 is that the distance between the UE and the serving cell is greater than a specific threshold value and the distance between the UE and the adjacent cell is less than a specific threshold value for a certain period of time, then CHO based on CondEvent D1 is triggered.

[0091] During the execution of CHO, the network side (eg, source base station) may send information about the transmission nodes (eg, target base station, candidate base stations, etc.) involved in the conditional handover to the terminal side (eg, UE) via information elements.

[0092] ConditionalReconfiguration-r16 is a function / information element introduced in the 5G R16 version, which is used to reconfigure the network under specific conditions. The purpose of ConditionalReconfiguration-r16 is to allow the network to be reconfigured according to specific conditions or events to adapt to different network environments or to achieve specific quality of service requirements. This function / information element is designed to provide more flexible and precise network optimization and performance adjustment capabilities. For example, when the network load reaches a preset threshold, ConditionalReconfiguration-r16 can be used to dynamically reconfigure resource allocation to balance the network load and improve service quality. Alternatively, when the needs of specific mobile devices change, ConditionalReconfiguration-r16 can be used to reconfigure parameters to meet the needs.

[0093] Exemplarily, ConditionalReconfiguration-r16 may include but is not limited to the following items.

[0094] attemptCondReconfig-r16: This function / information element indicates an attempt to perform a conditional reconfiguration operation under specific conditions. It can be considered a signal or request to trigger a conditional reconfiguration operation. Conditional reconfiguration is a key function in 5G networks, allowing the network to be reconfigured based on specific conditions or events. Conditional reconfiguration can optimize network performance, adapt to changing network environments, or meet quality of service requirements by changing parameters, policies, or resource allocation.

[0095] condReconfigToAddModList-r16: This function / information element specifies the list of configurations to be added or modified during conditional reconfiguration. This list specifies the addition or modification operations to be performed when the conditions are met. condReconfigToAddModList-r16 can contain multiple sub-elements, such as condReconfigId-r16, condExecutionCond-r16, and condRRCReconfig-r16.

[0096] condReconfigId-r16: This is the conditional reconfiguration operation identifier, used to uniquely identify each conditional reconfiguration operation. The purpose of CondReconfigId-r16 is to provide a unique identifier for different conditional reconfiguration scenarios. It can be configured by network devices (such as base stations or CN nodes) as needed. By using CondReconfigId-r16, the network can associate specific conditions with corresponding reconfiguration operations to ensure that conditional reconfiguration can be executed accurately.

[0097] condExecutionCond-r16: This defines the conditions for triggering a conditional reconfiguration operation. It describes the conditions under which the relevant conditional reconfiguration operation will be performed. By way of example and not limitation, the conditions for triggering the UE to perform CHO can be configured by condExecutionCond-r16, and the value of condExecutionCond-r16 can be MeasID. MeasID stands for Measurement ID and is a unique identifier used to identify and manage measurement procedures. In this example, by specifying the corresponding MeasID value in condExecutionCond-r16, the UE can trigger a CHO operation based on a measurement report or measurement event.

[0098] condRRCReconfig-r16: This defines the conditions that trigger an RRC (Radio Resource Control) reconfiguration operation. condRRCReconfig-r16 includes the RRC parameters that need to be reconfigured and the specific configuration actions to be taken when the conditions are met. These configuration actions may include, but are not limited to: modifying the UE's RRC connection parameters, such as frequency band, power level, and RLC (Radio Link Control) mode; updating the UE's radio resource allocation, such as allocating new carriers, resource blocks (RBs), or transmission time intervals (TTIs); performing RRC connection reestablishment to achieve better wireless connectivity or higher network quality; and so on.

[0099] condReconfigToRemoveList-r16: This function / information element specifies a list of configurations to be removed during a conditional reconfiguration. This list specifies the removal actions to be performed when the conditions are met.

[0100] The long propagation delay in NTNs and the large number of UEs within a single NTN cell make reducing HO signaling overhead a major research challenge. The current conditional handover (CHO) process involves a network device (e.g., a base station, more specifically, a serving gNB) sending CHO-related configuration information, including information about one or more candidate cells, to a terminal device (e.g., a UE) in advance. The UE then independently evaluates whether the conditions for performing a HO are met in each of these candidate cells. If the conditions are met, the UE performs a HO, switching to the candidate cell that meets the conditions. This process then repeats. That is, in a new cell (which was also a candidate cell before the most recent HO), the network device (e.g., the serving gNB) in that new cell still needs to send CHO-related configuration information to the UE.

[0101] Based on research on related technologies, a process called sequential CHO (CHO) can be used to optimize signaling interactions and improve efficiency. The basic idea behind this process is that the above-mentioned repetitive process can be optimized based on the predictability of satellite orbits (for example, in NTN communication scenarios such as earth-mobile cells and quasi-earth-mobile cells, where the movement of the Earth and / or the UE causes changes in the site (e.g., the serving cell)).

[0102] Specifically, when sending CHO-related configurations to the UE, the CHO-related configurations for multiple future time periods can be sent to the UE at the same time. This has the advantage that the UE does not need to perform HO-related signaling interactions with the network in all (e.g., each) NTN cells to which it is to be handed over, and can obtain CHO-related configurations for multiple future time periods in advance.

[0103] The sequential CHO process proposed in this paper allows the UE to obtain handover configurations for several time periods in advance and perform seamless handovers in subsequent time periods based on this information. This reduces signaling interactions between the UE and the network, improving communication efficiency and user experience.

[0104] For the convenience of description, the following terms are used in this article:

[0105] Candidate cell: As used herein, the target cell and potential candidate cells in the CHO may be collectively referred to as candidate cells.

[0106] Time period: refers to the time span during which different base stations (e.g., gNBs or satellites) provide services to a UE / area. As used herein, assuming that a current base station (e.g., gNB or satellite) is serving a UE / area during a certain time period until the UE switches to the next base station (e.g., another gNB or another satellite) or the area moves out of the coverage of the current base station, the time period refers to the time span during which the current base station serves the UE / area. It should be noted that the use of time periods is merely for the convenience of describing that a base station (e.g., gNB or satellite) is providing services to a certain UE / area, and does not simply emphasize the concept of time. This is at least partly due to the fact that the size of the time period may also be related to geographic location information.

[0107] In order to complete the above process and based on the research of relevant technologies, several technical problems need to be solved, including but not limited to:

[0108] How does the base station (e.g., serving gNB) send relevant messages and what is the sending process?

[0109] How to effectively organize the CHO-related signaling information that the serving gNB needs to send to the UE over the air interface for multiple candidate cells in different time periods? In other words, what information should be sent over the air interface to improve signaling transmission efficiency?

[0110] If the transmission of sequential CHO related configurations needs to be improved, how should the sequential CHO related configurations be modified?

[0111] How should the corresponding processes and messages be modified for scenarios where HO is not required but the satellite needs to switch, such as scenarios where the PCI (Physical Cell Identifier) ​​remains unchanged or where the PCI needs to be changed but HO is not required?

[0112] The present invention is further described below in detail using embodiments for solving the above technical problems as modules. It should be understood that the present invention is not intended to be limited to the embodiments for solving the above technical problems, but can be defined by the appended claims and their equivalents.

[0113] Example 1. A method and a sending process of a base station (e.g., a serving gNB) sending related messages.

[0114] 1.1 Solution 1: Solution based on the CHO call process in related technologies

[0115] 2 to 4 respectively illustrate signaling diagrams of several exemplary processes of sequential conditional handover in an exemplary NTN network according to some embodiments of the present invention.

[0116] Assume that in the time period [T0, T1], the NW starts the sequential CHO process and sends the target cell / candidate cell information of multiple time periods to the UE. Therefore, in the time period [T0, T1], the call flow is as depicted in Figure 2.

[0117] As shown in the figure, the UE first sends a Measurement Report message to the serving gNB for the current time period [T0, T1]. The serving gNB then makes a CHO decision based on the Measurement Report message reported by the UE. If the serving gNB determines that a HO is necessary, it sends a HO Request message to each candidate gNB corresponding to the next time period [T1, T2] immediately following the current time period [T0, T1]. For example, as shown in the figure, the serving gNB sends HO Request messages to the first candidate gNB (e.g., candidate gNB 1-0) corresponding to the next time period [T1, T2] through the n+1 candidate gNB (e.g., candidate gNB 1-n). Simultaneously, the serving gNB also sends HO Request messages to each candidate gNB corresponding to each of the following time periods. Assuming that there are a total of m time periods in addition to the current time period [T0, T1], taking the m-th time period as an example, the serving gNB may send a HO request message to the first candidate gNB (e.g., candidate gNB m-0) corresponding to the m-th time period [Tm, Tm+1] up to the n+1-th candidate gNB (e.g., candidate gNB mn), as depicted in FIG2 .

[0118] It should be noted that in the traditional CHO process, the call flow depicted in Figure 2 only involves the time period [T1, T2] immediately following the current time period [T0, T1]. Therefore, it does not involve the step of the serving gNB in ​​the current time period [T0, T1] sending a HO request message to the candidate cells corresponding to the time period [T2, T3] and subsequent time periods.

[0119] It should be understood that for the sake of clarity, the ellipsis in the figure indicates that signaling exchanges between the candidate gNBs for time periods 2 through m-1, as well as the serving gNB for the current time period [T0, T1], are omitted. Subsequently, the candidate gNBs in each time period perform admission control and send a HO request ACK (Acknowledgement) message to the serving gNB for the current time period [T0, T1]. After receiving the HO request ACK message sent by the candidate gNBs in each time period after the current time period, the serving gNB sends a reconfiguration message to the UE, including the CHO configuration from target (i.e., candidate) gNB 1-0 to target (i.e., candidate) gNB 1-n, and finally from target (i.e., candidate) gNB m-0 to target (i.e., candidate) gNB mn. In the example shown in the figure, the reconfiguration message may be an RRCReconfiguration message. After receiving the reconfiguration message and completing the configuration according to the reconfiguration message, the UE sends a reconfiguration complete message (e.g., RRCReconfigurationComplete). Then, at each subsequent time period, the UE evaluates whether the CHO condition is met for each candidate gNB corresponding to the subsequent time period. If a candidate gNB exists that satisfies the CHO condition, the UE performs CHO to that candidate gNB. For example, in the time period [T1, T2] immediately following the current time period [T0, T1], as shown in the figure, the UE evaluates the CHO condition for each candidate gNB corresponding to the time period [T1, T2] (i.e., target (candidate) gNB 1-0 through target (candidate) gNB 1-n). Assuming the CHO condition for target (candidate) gNB 1-0 is met, a RACH random access procedure or a RACH-less procedure can optionally be performed between the UE and target (candidate) gNB 1-0, and CHO from the UE to the target (candidate) gNB 1-0 is then completed, as depicted in Figure 2.

[0120] During the time period [T1, T2] and subsequent time periods up to [Tm, Tm+1], the step of sending CHO-related configurations to the UE (e.g., by the current serving gNB) can be omitted, and the call flow is depicted as shown in Figure 3. As shown in the figure, the current time period changes from the previous time period [T0, T1] to the time period [T1, T2], and the current serving gNB becomes gNB 1-0, one of the candidate gNBs whose CHO conditions were previously determined to be satisfied for the time period [T1, T2]. Before the next time period arrives (i.e., during the current time period [T1, T2] when gNB 1-0 is serving the UE), the UE can evaluate the CHO conditions for each candidate gNB (i.e., target (candidate) gNB 2-0 through target (candidate) gNB 2-n) corresponding to the next time period [T2, T3]. Assuming that the CHO conditions of the target (candidate) gNB 2-0 are met, a RACH random access procedure or a RACH-less procedure can be optionally performed between the UE and the target (candidate) gNB 2-0, and then the CHO of the UE to the target (candidate) gNB 2-0 is completed, as depicted in Figure 3.

[0121] The above process demonstrates that after the serving gNB in ​​the initial time period [T0, T1] (e.g., the serving gNB in ​​Figure 2) communicates the sequential CHO configurations for each target (candidate) gNB in ​​each subsequent time period to the UE, no further CHO-related signaling is required between the UE and the serving gNB in ​​the subsequent time periods, thereby reducing signaling overhead. Furthermore, the signaling overhead can be further reduced through the signaling saving mechanisms described later.

[0122] In some embodiments of the present invention, the above process may be performed in the following manner: the NW may send the HO or CHO related configuration to the UE via the air interface using a form such as an RRCReconfiguration message, or may send the HO or CHO related configuration to the UE via broadcast, or may send part of the information via broadcast and send the other part of the information to the UE via dedicated signaling. The present invention does not impose any limitation on this.

[0123] In some embodiments of the present invention, if an Xn interface / ISL (Inter-Satellite Link) is provided between the gNB / satellite, CHO configuration-related information may be transmitted directly between the gNBs, such as by the candidate cell (target (candidate) gNB) / satellite directly to the serving gNB / satellite.

[0124] In some embodiments of the present invention, if there is no Xn interface / ISL between gNB / satellite, the CHO configuration related information can be transmitted through the network element (such as AMF (Access and Mobility Management Function)) / gNB.

[0125] As shown in Figure 4, if there is no Xn interface between gNBs, CHO configuration-related information can be transmitted through the AMF. Specifically, Figure 4 differs from Figure 2 in that, as shown in Figure 4, the serving gNB in ​​the current time period [T0, T1] sends HO request messages to the first candidate gNB (e.g., candidate gNB 1-0) through the n+1 candidate gNB (e.g., candidate gNB 1-n) corresponding to the next time period [T1, T2]. Instead of the current serving gNB sending these HO request messages directly to each candidate gNB, the current serving gNB sends these HO request messages to the network element (e.g., the AMF shown in the figure), which then forwards them to each candidate gNB. Simultaneously, the serving gNB also sends HO request messages to each candidate gNB corresponding to each of the following time periods. For example, for the mth time period, the serving gNB may send HO request messages to the first candidate gNB (e.g., candidate gNB m-0) through the n+1 candidate gNB (e.g., candidate gNB mn) corresponding to the mth time period [Tm, Tm+1]. Similarly, these HO request messages are also sent by the current serving gNB to the network element (e.g., AMF as shown in the figure), and forwarded by the network element to each candidate gNB (e.g., candidate gNB m-0 to candidate gNB mn).

[0126] It should be understood that for the sake of simplicity, the ellipsis in Figure 4 indicates that the signaling exchanges between the candidate gNBs for time periods 2 through m-1, as well as the serving gNB for the current time period [T0, T1], and these candidate gNBs via network elements (e.g., AMF) are omitted. Subsequently, the candidate gNBs in each time period perform admission control and send a HO request ACK (Acknowledgement) message to the serving gNB for the current time period [T0, T1] via a network element (e.g., AMF).

[0127] It should be noted that the steps described in conjunction with the accompanying drawings are only examples and do not limit the scope of the present invention. Various modifications and changes can be made to the steps without departing from the spirit and scope of the present invention.

[0128] The order of the described steps (signaling / boxes) is not intended to be construed as a limitation, and any number of the described steps (signaling / boxes) may be skipped or combined in any order to implement a method or an alternative method.

[0129] 1.2 Solution 2: Pre-configure (C)HO related configurations for UE

[0130] In some embodiments of the present invention, pre-configuring (C)HO related configurations for a UE may be completed according to the following steps.

[0131] Step (1): The UE is pre-configured with (C)HO related configurations, which can be associated with the geographic location. The geographic location information can be Tracking Area ID, Cell ID, PCI, PGI (Physical Group Identity), etc.

[0132] Step (2): After the UE is connected to a cell, it can learn about the configuration information related to NTN CHO in the cell or the geographical location.

[0133] Step (3): This step can be exemplarily divided into two cases:

[0134] Alternative solution 1: The UE can perform CHO based on pre-configured information.

[0135] Alternative 2: In some cases, the pre-configured information may not reflect the real-time network conditions. Therefore, the serving gNB still needs to send sequential CHO-related information to the UE, and the UE performs CHO according to this configuration. This scenario is applicable, for example, when the UE is pre-configured with a complete CHO configuration, but due to some real-time conditions (such as, but not limited to, some satellites are not currently up or for load balancing purposes), the serving gNB needs to send the CHO-related configuration it wants to send to the UE.

[0136] In this case, optimization operations can be performed, for example, the pre-configured handover configuration can be associated with an index so that when the serving gNB sends the real-time CHO configuration to the UE, only the index needs to be sent.

[0137] 1.3 Solution 3: Send (C)HO related configuration as a complete configuration to the UE

[0138] In some embodiments of the present invention, sending the (C)HO related configuration as a complete configuration to the UE may be accomplished by following the steps below.

[0139] Step (1): Different from Solution 2, the (C)HO related configurations related to candidate cells in multiple time periods are no longer provided to the UE through pre-configuration, but can be sent to the UE by one / some gNBs through broadcast or dedicated signaling.

[0140] Step (2): This configuration can be a complete configuration with detailed information, but sometimes it may not reflect the real-time situation of the network. Therefore, the serving gNB still needs to send sequential CHO related information to the UE so that the UE can perform CHO according to the configuration.

[0141] In this case, optimization operations can be performed, such as associating the complete (C)HO configuration with an index so that when the serving gNB sends the real-time CHO configuration to the UE, only the index needs to be sent.

[0142] It should be noted that the specific contents of the configuration in Section 2.1 below and the pre-configuration and complete configuration in Section 1.2 above and Section 1.3 here will be described in detail below.

[0143] It should also be noted that the index mentioned in Section 1.2 above and Section 1.3 here can be any index described below, such as the index consisting of the first index and the second index in Section 2.1.1 below, the new ID in Section 2.1.2 below, and the first ID in Section 2.1.3 below.

[0144] Taking the new IDs in Section 2.1.2 below as an example, each new ID corresponds to a candidate cell configuration. If the configuration is pre-configured to the UE or provided to the UE via a complete configuration, then the NW only needs to send the index when sending CHO-related configurations over the air.

[0145] In some embodiments of the present invention, when a real-time CHO configuration conflicts with a (C)HO-related configuration pre-configured to a UE or sent to the UE as a complete configuration, the real-time CHO configuration prevails. For example, assuming that during one or more of m time periods, the real-time CHO configuration sent by the serving gNB to the UE conflicts with a (C)HO-related configuration pre-configured to the UE or sent to the UE as a complete configuration, the UE will prevail over the received real-time CHO configuration during those one or more time periods, while continuing to operate according to the (C)HO-related configuration pre-configured to the UE or sent to the UE as a complete configuration during the remaining time periods.

[0146] Example 2. (C)HO configuration-related signaling sent by the serving gNB to the UE via the air interface and its format.

[0147] According to relevant technologies, the CHO configuration-related information element IE sent by the serving gNB to the UE mainly includes the following:

[0148] ①condReconfigId-r16 CondReconfigId-r16

[0149] ②condExecutionCond-r16 SEQUENCE(SIZE(1..2))OF MeasId

[0150] ③condRRCReconfig-r16 OCTET STRING(CONTAINING RRCReconfiguration)

[0151] Content ① represents an ID associated with the CHO-related configuration. In the present invention, in order to distinguish it from the newly introduced ID, this ID is called the first ID.

[0152] Content ② indicates the conditions under which the UE must evaluate whether to perform a HO. Its value is the measID. The measID is an ID that associates the reporting configuration with the measurement configuration. This serves to inform the UE which specific evaluation method to use. In NTN, three methods are available: RSRP / RSRQ, location-based, and time-based.

[0153] In some embodiments of the present invention, measID may include things related to measurement, things related to reporting, and conditions for triggering measurement.

[0154] Content ③ represents the RRC Reconfiguration message sent by the candidate cell to the source gNB. This message can be sent as a container from the candidate gNB to the source gNB over the Xn interface, and then the source gNB sends this message to the UE. If the UE intends to HO to the candidate cell, it will apply the message in this container. In this disclosure, unless otherwise specified, the term "source gNB" is used interchangeably with the term "serving gNB."

[0155] In the following, for the convenience of description, the meanings of some terms are defined as follows.

[0156] Serving gNB: The gNB or cell that is serving the UE / area.

[0157] Container: RRCReconfiguration information sent by the candidate cell to the source gNB, which the UE needs to apply if it switches to this cell.

[0158] First ID: the original ID that identifies a CHO-related configuration, that is, condReconfigId-r16.

[0159] measID: The conditions that need to be evaluated when the UE switches to a candidate cell.

[0160] In some embodiments of the present invention, the serving gNB does not process the RRCReconfiguration information sent by the candidate cell and forwards it to the UE.

[0161] 2.1 How to distinguish which time period different candidate cells belong to

[0162] The UE needs to be informed of its candidate cells in a certain time period and / or the HO order of these candidate cells.

[0163] According to the existing CHO process, candidate cells for the next time period send a container to the source gNB, which then sends the container along with the first ID and measID to the UE. In other words, for each candidate cell, the serving gNB sends a set of {first ID, measID, container} to the UE. If there are m candidate cells for the next time period, the serving gNB sends the following m sets of content to the UE, as shown in Table 1:

[0164] Table 1

[0165] Therefore, for the sequential CHO scenario, the CHO configurations of candidate cells for multiple time periods in the future need to be sent to the UE. The following solutions are available.

[0166] Each time period is associated with a parameter, and the parameter is used to represent the information of the time period. In the present invention, for the convenience of description, the parameter is represented by the second ID.

[0167] 2.1.1 Solution 1

[0168] In some embodiments of the present invention, when the serving gNB sends the CHO configuration to the UE, the second ID and the CHO configuration of the candidate cell in the time period corresponding to it can be associated and sent together.

[0169] Assume that there are n time periods and each time period has m candidate cell CHO configurations that need to be sent to the UE. An example format is shown in Table 2 below. Note that to simplify the description, the number of candidate cells in each time period is m. However, in practice, the maximum number of candidate cells and the number that can be actually configured in each time period can be different, and this document does not impose any restrictions on this.

[0170] Table 2

[0171] If IE is used, the following example scenario may exist.

[0172] Example scenario 1: The second ID can be placed in the same IE layer as other CHO configurations {first ID, measID, container}. An example information element CondReconfigToAddModList is shown in Table 3 below.

[0173] Table 3: CondReconfigToAddModList information element

[0174] Example Scenario 2: The second ID can be placed in the upper layer IE of the CHO configuration {first ID, measID, container}. In this example scenario, the parameter for sending CHO configuration information for n time periods is written as CondReconfigsetToAddModList-r19, and the maximum number of time periods in which CHO configuration information can be sent is written as maxNoof CondCellsset-r19. An example information element CondReconfigToAddModList is shown in Table 4 below.

[0175] Table 4: CondReconfigToAddModList information element

[0176] 2.1.2 Solution 2

[0177] In some embodiments of the present invention, the first ID and the second ID can be combined so that the serving gNB transmits a single ID over the air interface. The NW can derive this ID by combining the specific time period and information about each candidate cell, allowing the UE to know the time period and candidate cell to which the CHO-related configuration belongs.

[0178] In some embodiments of the present invention, the combination method may be to arrange the first ID and the second ID in a table or list. The first part of the table or list may include the first ID, and the second part may include the second ID. Accordingly, the two parts are combined, and each combination is assigned an index.

[0179] In conjunction with the content of Section 2.4 below, it is assumed that a maximum of maxNoof CondCellsset-r19 (in this example, 4) time periods of candidate cell CHO-related configurations can be sent. The first ID is CondReconfigId-r16, and according to the current 3GPP definition, its maximum value is 8. The two IDs can be (pre-)configured in a table or list, and the values ​​of the two information can be combined one by one. In this example, 4*8=32 cases can be obtained (as shown in Table 5 below). An index is assigned to each of these 32 combinations. In this way, the two IDs are combined into a new index.

[0180] In some embodiments of the present invention, when sending CHO-related configurations to the UE, the serving gNB may use a new ID instead of the original first ID. Thus, for each candidate cell, the information sent to the UE is {new ID, measID, container}.

[0181] Table 5

[0182] It can be understood that the combination in Table 5 above is exemplary, and there may be different combinations of the first ID and the second ID, which is not limited in this document.

[0183] 2.1.3 Solution 3

[0184] In some embodiments of the present invention, without the need for the second ID information, the serving gNB can explicitly or implicitly inform the UE which time period each candidate cell belongs to by properly configuring the first ID.

[0185] The maximum value of the first ID can remain at the existing 8, or it can be extended. Continuing with the previous example, assuming that a maximum of maxNoof CondCellsset-r19 (in this example, 4, representing time periods 1 to 4) time periods can be sent for CHO-related information of candidate cells, the first ID can be extended to 32 values. It can be assumed that when the value of the first ID is 1 to 8, the candidate cell belongs to time period 1; then when the value is 9 to 16, the candidate cell belongs to time period 2; then when the value is 17 to 24, the candidate cell belongs to time period 3; and finally, when the value is 25 to 32, the candidate cell belongs to time period 4. In this way, the UE can know which time period the candidate cell belongs to through the value of the first ID.

[0186] In some embodiments of the present invention, the relationship between the value of the first ID and different time periods may be preconfigured for the UE, or the NW may inform the UE through broadcasting or dedicated signaling.

[0187] 2.1.4 Methods for describing time periods

[0188] The second ID can be represented in various ways.

[0189] In some embodiments of the present invention, method 1 is provided to represent the second ID, that is, an index may be used to indicate which candidate cells belong to which same service time period. For example, the index may be in the form of the following IE.

[0190] 2nd ID-R19 BIT STRING(SIZE(3))

[0191] or

[0192] 2nd ID-R19 INTEGER(1…maxNoofCondCellsset-r19)

[0193] Assume that CHO-related information for a maximum of 19 candidate cells (here, 8) can be sent for time periods (maxNoofCondCellsset-r). The second ID can be represented using a number of bits or directly in integer format. For example, if candidate cells 1 and 2 belong to the same time period, the serving gNB can set the second IDs of these two cells to, for example, 001 or the integer 1. Similarly, if candidate cells 3, 4, and 5 belong to another time period, the serving gNB can set the second IDs of these three cells to, for example, 010 or the integer 2.

[0194] In some embodiments of the present invention, method 2 is provided to represent the second ID, that is, a specific time period can be used to accurately inform the UE in which time period these candidate cells will serve the UE / area. Exemplary representations include the following: (1) and (2).

[0195] (1) Give a specific time period. For example, the following IE format can be used.

[0196] 2nd ID-R19 INTEGER(timevalue,value+time duration)

[0197] (2) For a reference time, an offset time is given. For example, the following IE format can be used.

[0198] Benchmark time INTEGER(timevalue)

[0199] 2nd ID-R19 INTEGER(time duration)

[0200] In some embodiments of the present invention, Method 3 is provided for indicating the second ID. According to Method 3, an association relationship may exist before indicating the time period as in Methods 1 and 2. The UE can obtain this association relationship through various means. For example, one means is to preconfigure this information for the UE; another means is for the NW to inform the UE via broadcast or dedicated signaling.

[0201] In some embodiments of the present invention, after the UE obtains the association relationship, the serving gNB may send only the index as in method 1 to the UE via the air interface.

[0202] In some embodiments of the present invention, if the association relationship is obtained through the air interface, the NW may first send the association relationship to the UE and then send the index, or both may be sent simultaneously.

[0203] 2.2 How to send measurement-related configurations for subsequent time periods to the serving gNB

[0204] In traditional CHO, measurement-related configurations are configured by the source gNB. The specific configuration IEs are described above. However, in sequential CHO, the serving gNB, which sends the initial sequential CHO configuration, needs to know the measurement-related configurations for subsequent time periods. This can be addressed using the following solution.

[0205] 2.2.1 The gNB in ​​the subsequent time period sends the measurement-related configuration to the serving gNB, which then sends it to the UE through the sequential CHO configuration.

[0206] As shown in Figure 5, the serving gNB responsible for sending the sequential CHO configuration can configure the measurement configuration for itself and neighboring cells, but the measurement-related configurations for subsequent time periods need to be sent to the serving gNB by the gNBs in these subsequent time periods.

[0207] Assume that the current serving gNB serves the UE during the time period [T0, T1]. Its candidate gNBs are candidate gNB 1-0, ..., candidate gNB 1-n, and these candidate gNBs serve the UE during the time period [T1, T2]. The candidate gNBs for the subsequent time period [Tm-1, Tm] are candidate gNB (m-1)-0, ..., candidate gNB (m-1)-n. These candidate gNBs have neighboring candidate gNBs m-0, ..., candidate gNB mn, and their corresponding time periods are [Tm, Tm+1]. The measurement-related configuration for handover from the cell in time period [Tm-1, Tm] to the candidate cell in time period [Tm, Tm+1] needs to be configured by the cell in time period [Tm-1, Tm]. Therefore, if the serving gNB in ​​time period [T0, T1] wants to send the sequential CHO configuration for the HO from time period [Tm-1, Tm] to the candidate cell in time period [Tm, Tm+1], the cell in time period [Tm-1, Tm] needs to send the measurement-related configuration to the serving gNB in ​​time period [T0, T1], which then sends it to the UE.

[0208] As shown in Figure 5 , for the sake of simplicity, candidate cells gNB m-0, ..., gNB mn in time period [Tm, Tm+1] are shown schematically, each sending a HO request ACK message including measurement-related configurations to the serving gNB in ​​the current time period [T0, T1]. After receiving the HO request ACK message from each candidate gNB in ​​multiple subsequent time periods after time period [T0, T1], the serving gNB sends a reconfiguration message (e.g., an RRCReconfiguration message) to the UE, including the CHO configurations from target (i.e., candidate) gNB 1-0 to target (i.e., candidate) gNB 1-n, and finally from target (i.e., candidate) gNB m-0 to target (i.e., candidate) gNB mn, as well as measurement-related configurations for all candidate cells.

[0209] For example, in the scenario shown in FIG5 , the measurement-related configurations of the candidate gNBs in the neighboring cells of the serving gNB in ​​the current time period [T0, T1] (i.e., the candidate gNBs 1-0 to gNB 1-n corresponding to the time period [T1, T2]) are configured by the serving gNB. In other words, the measurement-related configurations do not need to be included in the HO request ACK messages sent by the candidate gNBs 1-0 to gNB 1-n to the serving gNB.

[0210] In some embodiments of the present invention, the number of neighboring cells for which the serving gNB may configure measurement-related configurations for candidate cells may vary depending on practical circumstances and is not limited herein. For example, in some cases, in addition to the measurement-related configurations for candidate gNBs 1-0 through 1-n corresponding to time period [T1, T2], the serving gNB in ​​the current time period [T0, T1] may also configure measurement-related configurations for candidate gNBs 2-0 through 2-n corresponding to time period [T2, T3], and so on.

[0211] It can be understood that the measurement-related configuration may include a complete set of measurement configurations. For details, please refer to the relevant IEs described above, which will not be repeated here.

[0212] 2.2.2 The serving gNB that sends the sequential CHO configuration uniformly configures measurements for all candidate cells involved in the sequential CHO

[0213] In some embodiments of the present invention, the gNB in ​​the subsequent time period does not need to send measurement-related configurations to the serving gNB that is about to send the sequential CHO configuration. Instead, the serving gNB can directly and uniformly configure measurements for all candidate cells involved in the sequential CHO configuration. This is mainly due to the similarity between satellites in NTN communications (such as 5G NTN) compared to sites in terrestrial communications (e.g., ground base stations, TRPs (Transmission Reception Points)), orbital predictability, and stronger capabilities on the NTN side, which enables the serving gNB to uniformly configure measurements for all candidate cells involved in the sequential CHO configuration.

[0214] In some embodiments of the present invention, when configuring measurement-related parameters for candidate cells in different time periods, the serving gNB may perform common configuration, that is, configure the measurement-related parameters to be shared.

[0215] As shown in Figure 6, the serving gNB responsible for sending the sequential CHO configuration can configure measurement-related configurations for itself and all candidate cells for subsequent time periods. For simplicity, the figure only schematically illustrates the sending of HO Request ACK messages from candidate cells gNB m-0,...,gNB mn for time periods [Tm, Tm+1] to the serving gNB for the current time period [T0, T1]. Unlike Figure 5, the HO Request ACK messages do not include measurement-related configurations. After receiving the HO Request ACK messages from each candidate gNB for multiple subsequent time periods following time period [T0, T1], the serving gNB sends a reconfiguration message (e.g., an RRCReconfiguration message) to the UE, including the CHO configurations for target (i.e., candidate) gNB 1-0, through target (i.e., candidate) gNB 1-n, and finally, through target (i.e., candidate) gNB m-0, through target (i.e., candidate) gNB mn, as well as measurement-related configurations for all candidate cells. The measurement-related configurations for all candidate cells (as described above, all of which are involved in sequential CHO) are configured by the serving gNB for the current time period [T0, T1]. Additionally, the serving gNB for the current time period [T0, T1] may configure some or all of the measurement-related configurations (e.g., the included measurement-related parameters) for the candidate cells to be shared. For example, the serving gNB for the current time period [T0, T1] may configure the measurement-related configurations for candidate cells corresponding to one or more subsequent time periods to be shared, and this document does not impose any restrictions on this.

[0216] 2.3 Correspondence between measID and container

[0217] As can be seen from Section 2 above, in the existing CHO configuration, each candidate cell has a container and a measID in its configuration. In the sequential CHO process, in addition to maintaining this relationship, one measID can also correspond to multiple containers. In other words, if the measobject (measurement object) and reportconfig (report configuration) of multiple candidate cells are the same, then the containers of these candidate cells can correspond to the same measID to reduce the configuration signaling related to CHO. The example design on the IE is shown in Table 6 below. Specifically, the original condRRCReconfig is expanded into a list containing multiple containers. These containers correspond to the same measID.

[0218] Table 6: CondReconfigToAddModList information element

[0219] The reason for establishing the correspondence between measIDs and containers is that in the traditional CHO process, there are at most multiple measIDs that need to be sent to the serving gNB by these candidate cells, which is the same as the number of candidate cells corresponding to the next time period. However, in sequential CHO, the number of candidate cells in subsequent time periods is usually much larger than that in the CHO process. In addition, considering the similarity of measurement configurations between satellites, for example, making multiple containers correspond to one measID can simplify the signaling interaction between candidate cells and the serving gNB, thereby saving signaling overhead.

[0220] 2.4 Optimizing the container

[0221] For each candidate cell container, there may be a situation where some configuration contents of multiple candidate cells are the same for the same UE, that is, some configuration parameters of multiple candidate cells for the same UE may be the same. In the present invention, for ease of description, these same configurations are referred to as sameconfig.

[0222] As described above, each candidate cell has its own container, which contains its own configuration. To address this situation, the following optimizations can be performed.

[0223] 2.4.1 Extract sameconfig

[0224] In some embodiments of the present invention, candidate cells still send configuration messages (such as RRCReconfiguration) to the serving gNB separately through containers. The serving gNB extracts the sameconfig after analysis and no longer includes the sameconfig in each container. Instead, even for multiple candidate cells, a single IE is used for configuration. At the same time, the unique configuration of each candidate cell is still placed in its own container for sending to the UE, as shown in Table 7 below.

[0225] Table 7

[0226] The ability to extract sameconfig is mainly due to the relative stability of satellite orbits, the relative certainty of satellite suppliers, and the strong capabilities of the NTN communication network.

[0227] The example IE design is shown in Table 8 below.

[0228] Table 8

[0229] In some embodiments of the present invention, as shown in FIG7 , when a candidate cell sends a configuration message (e.g., RRCReconfiguration) to the serving gNB, it may inform the serving gNB which parts are the sameconfig and send only one message to include the sameconfig, without requiring each candidate cell's container to include the sameconfig.

[0230] For example, Figure 7 shows that all candidate cells from time periods [T1, T2] to [Tm, Tm+1] have the same sameConfig. Accordingly, the HO Request ACK message sent by candidate gNB 1-0 in time period [T1, T2] to the serving gNB of the current time period [T0, T1] includes both the sameConfig and the configuration unique to candidate gNB 1-0 (e.g., RRCReconfiguration of candidate gNB 1-0). The HO Request ACK messages sent by the remaining candidate cells in time period [T1, T2], such as gNB 1-n, to the serving gNB of the current time period [T0, T1], may therefore only include the configuration unique to the candidate gNB (e.g., RRCReconfiguration of candidate gNB 1-n) in the HO Request ACK messages sent to the serving gNB of the current time period [T0, T1]. Similarly, all candidate cells in subsequent time periods may send only their unique configurations, without including the sameConfig, in the HO Request ACK messages sent to the serving gNB of the current time period [T0, T1].

[0231] In some embodiments of the present invention, for each candidate cell in each time period, a separate sameconfig may be extracted or configured. For each candidate cell in each time period, the serving gNB may send a sameconfig followed by a container for each candidate cell, as shown in Table 9 below.

[0232] Table 9

[0233] In some embodiments of the present invention, the sameconfig can be extracted from candidate cells regardless of the time period they belong to, although some candidate cells may have the same sameconfig while others may have different sameconfigs. Therefore, candidate cells can be grouped, with candidate cells with the same sameconfig grouped together. Thus, for each group of candidate cells, the serving gNB can send a sameconfig and then send a container (excluding the sameconfig) for each candidate cell, as shown in Table 10 below. Assume that all candidate cells for all time periods are grouped into n groups, and that the cells in each group contain their own sameconfig.

[0234] Table 10

[0235] In some embodiments of the present invention, candidate cells for each time period can be grouped, with candidate cells with the same SameConfig grouped together. Thus, for each group of candidate cells in each time period, the serving gNB can send a SameConfig, followed by a container (excluding the SameConfig) for each candidate cell, as shown in Table 11 below. The candidate cells for each time period are grouped into n groups (the number of n, i.e., the number of groups, can vary for each time period), with each cell in each group containing its own SameConfig.

[0236] Table 11

[0237] In some embodiments of the present invention, the NW may send the sameconfig to the UE via dedicated signaling.

[0238] In some embodiments of the present invention, the NW may pre-configure the sameconfig to the UE, or send the sameconfig to the UE in the form of broadcasting.

[0239] 2.4.2 What configurations does sameconfig include?

[0240] For the same UE, multiple candidate cells may be configured in the same way. Based on research on related technologies, some relatively important IEs in the configuration of the candidate cell for the UE include, but are not limited to, the following:

[0241] Spcellconfigcommon;

[0242] NewUE-Identity;

[0243] T304;

[0244] RACH-configDedicated;

[0245] SMTC (SSB Measurement Timing Configuration); etc.

[0246] In some embodiments of the present invention, the aforementioned IEs, as well as potentially other IEs, may all be configured with the same value for a particular UE. For example, T304, a control timer used in the HO process, may be configured with the same value. Configurations such as RACH-configDedicated and SMTC may also be configured with the same value. Furthermore, some IEs in spcellconfigcommon, such as DLconfigCommon and ULConfigcommon, may also be configured with the same value.

[0247] In some embodiments of the present invention, if the UE uses a RACH-less mode when accessing the target cell, the RACH-less mode may need to configure pre-allocated resources for the UE, and the pre-allocated resources may also belong to sameconfig.

[0248] In this document, unless otherwise specified, the same or similar terms have the same or similar meanings throughout the document. Therefore, the explanation or description of a term in one place in this document is also applicable to the reference to the term elsewhere in this document.

[0249] The following provides some exemplary embodiments of the present invention from the perspective of the first network node. It will be understood that these exemplary embodiments are provided for illustrative purposes only. Based on the description and teachings of the present invention, those skilled in the art can conceive of any suitable modifications, additions, deletions, variations, and / or combinations of these exemplary embodiments, thereby readily obtaining equivalent implementations of these exemplary embodiments.

[0250] In some embodiments of the present invention, as shown in FIG8 , a wireless communication method is provided, which is executed on a first network node, wherein the method includes step 801: sending a configuration message to a terminal device, wherein the configuration message includes conditional switching CHO-related configuration information for multiple second time periods after a first time period, wherein the first time period is the duration for which the first network node serves the terminal device, and the CHO-related configuration information is used to instruct the terminal device to perform conditional switching CHO to the second network node corresponding to the second time period during each second time period. In this way, the terminal device can receive CHO-related configuration information for several future consecutive time periods in advance, and in multiple subsequent time periods, there is no need to interact with the network side for CHO-related signaling, thereby saving signaling overhead.

[0251] Exemplarily, the configuration message may be a reconfiguration message, such as an RRC reconfiguration message, sent by the serving network node (e.g., a base station, more specifically, a gNB in ​​5G NR) described above to a terminal device (e.g., a UE) and including CHO configurations of various target (e.g., candidate) network nodes. The configuration message may be used to configure new radio resources for the terminal device (e.g., a user equipment UE) and to help trigger a new connection establishment (e.g., RRC connection establishment) process between the terminal device and the target network node.

[0252] Exemplarily, the CHO-related configuration information may refer to the CHO configuration described above. Specifically, the conditional switching CHO-related configuration information of the plurality of second time periods may be the CHO configuration of each target (e.g., candidate) network node in the subsequent time period described above (e.g., from the perspective of the current network node).

[0253] In some embodiments of the present invention, before sending the configuration message to the terminal device, the method further includes:

[0254] Receive a CHO-related message sent by each of the plurality of network nodes corresponding to each of the plurality of second time periods, wherein the configuration message is at least partially based on the CHO-related message.

[0255] In some embodiments of the present invention, the CHO-related message is a CHO request response message, and before receiving the CHO-related message sent by each of the plurality of network nodes corresponding to each of the plurality of second time periods, the method further includes:

[0256] A CHO request message is sent to each of the plurality of network nodes corresponding to each of the plurality of second time periods.

[0257] Exemplarily, the CHO request message may correspond to the HO request message described above with reference to Figures 2 to 7. Taking the CHO request message as an example, it may be used to inquire / request the target (e.g., candidate) network node whether the target (e.g., candidate) network node is to join the sequential CHO process, so that the terminal device (e.g., user equipment) can subsequently selectively switch to the target (e.g., candidate) network node or access the network of the target (e.g., candidate) network node.

[0258] Exemplarily, the CHO request response message may correspond to the HO request ACK message described above with reference to Figures 2 to 7. Taking the CHO request response message as an example, it may be used to indicate that a target (e.g., candidate) network node agrees / refuses to join the sequential CHO process, so as to determine whether to include the network node as a candidate network node in the sequential CHO process, so that a terminal device (e.g., user equipment) can subsequently selectively switch to the target (e.g., candidate) network node or access the network of the target (e.g., candidate) network node (e.g., as described above, when the CHO conditions of the network node are met).

[0259] In some embodiments of the present invention, the CHO request message is sent by the first network node in response to a CHO decision made by the first network node to perform the CHO.

[0260] In some embodiments of the present invention, the CHO decision is made by the first network node based on a measurement report message sent from the terminal device and received by the first network node.

[0261] In some embodiments of the present invention, the CHO request message and / or the CHO request response message are transmitted via a third network node. This allows for adapting to situations where, for example, there is no Xn interface / ISL between the gNB / satellite, thereby improving system compatibility.

[0262] Exemplarily, the third network node may be a node in the network control plane, such as in LTE, the third network node may be an MME (Mobility Management Entity), in 5G NR, the third network node may be an AMF (Access and Mobility Management Function), and so on. This document does not impose any restrictions on this.

[0263] In some embodiments of the present invention, the configuration message is carried by dedicated signaling, broadcast signaling, or a combination of dedicated signaling and broadcast signaling.

[0264] Exemplarily, the dedicated signaling may include RRC message signaling (as described above), NAS (Non-Access Stratum) signaling, or any other suitable signaling, which is not limited herein.

[0265] Exemplarily, the broadcast signaling may include a paging message, a system message (such as a SIB (System Information Block)), etc., which is not limited in this document.

[0266] In some embodiments of the present invention, the CHO-related configuration information includes a CHO configuration or a CHO index associated with the CHO configuration. Therefore, if the complete CHO configuration pre-configured for a terminal device cannot reflect real-time network changes, the index can be used to represent and transmit the real-time changed CHO configuration in an incremental manner, thereby improving system flexibility.

[0267] Exemplarily, the CHO index associated with the CHO configuration can be any identification ID described above, for example, the index consisting of the first ID and the second ID described in Table 2, the new ID described in Table 5, the first ID described in Solution 2.1.3 (for example, the time period to which each candidate cell belongs can be implicitly obtained from such a first ID), etc. This document does not impose any restrictions on this.

[0268] In some embodiments of the present invention, the CHO configuration includes a CHO-related configuration ID, a measurement-related ID, and a container.

[0269] For example, the CHO-related configuration ID may be the first ID described above, which is not limited herein. As an example and not a limitation, the first ID may be a conditional reconfiguration information element CondReconfigID in various 3GPP releases, such as CondReconfigID-r16, or any suitable variant thereof.

[0270] Illustratively, the measurement-related ID may be the measID described above, and the container may be the container described above.

[0271] In some embodiments of the present invention, each of the plurality of second time periods is associated with a time-related ID.

[0272] In some embodiments of the present invention, the configuration message includes the CHO configuration and the time correlation ID.

[0273] In some embodiments of the present invention, the CHO index is obtained by combining the CHO-related configuration ID and the time-related ID.

[0274] In some embodiments of the present invention, each of the plurality of network nodes corresponding to each of the plurality of second time periods is assigned a unique ID, where the unique ID is obtained by combining the time-related ID and the CHO-related configuration ID.

[0275] In some embodiments of the present invention, the CHO configuration includes the unique ID, the measurement-related ID, and the container.

[0276] Exemplarily, the unique ID may be the new ID described above or any suitable variation thereof, which is not limited herein.

[0277] In some embodiments of the present invention, the CHO-related configuration ID indicates a second time period corresponding to each of the plurality of network nodes.

[0278] Through the above method, each candidate network node can be effectively distinguished in time, thereby improving the accuracy of the system.

[0279] In some embodiments of the present invention, the time-related ID includes any one of an index, a reference time and an offset, or a mapping relationship.

[0280] In some embodiments of the present invention, the configuration message further includes measurement-related configuration information of each of the plurality of network nodes.

[0281] In some embodiments of the present invention, measurement-related configuration information may include any one of the measurement object (indicator), reporting configuration (for example, for UE to package / trigger measurement results), measID, or any other suitable information, and this document does not impose any restrictions on this.

[0282] In some embodiments of the present invention, the measurement-related configuration information is provided by the first network node.

[0283] In some embodiments of the present invention, the measurement-related configuration is common to the plurality of second network nodes.

[0284] In some embodiments of the present invention, the CHO configuration includes one or more container lists, each of which includes multiple containers corresponding to a same measurement-related ID.

[0285] In some embodiments of the present invention, the method further includes obtaining configuration information of the same portion from the container.

[0286] Exemplarily, the configuration information of the same part may be the sameconfig described above.

[0287] In some embodiments of the present invention, the configuration information of the same portion is informed to the first network node by at least one network node among the plurality of network nodes.

[0288] In some embodiments of the present invention, the configuration information of the same portion is obtained by the first network node by analyzing the received CHO-related message.

[0289] In some embodiments of the present invention, sending the configuration message to the terminal device includes sending the same portion of configuration information and the remaining portion of configuration information in the container of each of the plurality of network nodes, excluding the same portion of configuration information, to the terminal device. This effectively reduces signaling overhead required to transmit the container and improves communication efficiency.

[0290] In some embodiments of the present invention, the configuration information of the same part includes at least one of the following information elements IE: Spcellconfigcommon, NewUE-Identity, T304, RACH-configDedicated, or SMTC.

[0291] The following provides some exemplary embodiments of the present invention from the perspective of terminal devices. It will be understood that these exemplary embodiments are provided for illustrative purposes only. Those skilled in the art can conceive of any suitable modifications, additions, deletions, variations, and / or combinations of these exemplary embodiments based on the description and teachings of the present invention, thereby easily obtaining equivalent implementations of these exemplary embodiments.

[0292] In some embodiments of the present invention, as shown in FIG9 , a wireless communication method is provided, which is executed on a terminal device, wherein the method includes step 901: receiving a configuration message from a first network node, wherein the configuration message includes conditional switching CHO-related configuration information for multiple second time periods after a first time period, wherein the first time period is the duration of the first network node serving the terminal device, and the CHO-related configuration information is used to instruct the terminal device to perform conditional switching CHO to the second network node corresponding to the second time period during each second time period. In this way, the terminal device can receive CHO-related configuration information for several future consecutive time periods in advance, and in multiple subsequent time periods, there is no need to interact with the network side for CHO-related signaling, thereby saving signaling overhead.

[0293] Exemplarily, the configuration message may be a reconfiguration message, such as an RRC reconfiguration message, sent by the serving network node (e.g., a base station, more specifically, a gNB in ​​5G NR) described above to a terminal device (e.g., a UE) and including CHO configurations of various target (e.g., candidate) network nodes. The configuration message may be used to configure new radio resources for the terminal device (e.g., a user equipment UE) and to help trigger a new connection establishment (e.g., RRC connection establishment) process between the terminal device and the target network node.

[0294] Exemplarily, the CHO-related configuration information may refer to the CHO configuration described above. Specifically, the conditional switching CHO-related configuration information of the plurality of second time periods may be the CHO configuration of each target (e.g., candidate) network node in the subsequent time period described above (e.g., from the perspective of the current network node).

[0295] In some embodiments of the present invention, before the terminal device receives the configuration message from the first network node, the first network node receives a CHO-related message sent by each of the multiple network nodes corresponding to each of the multiple second time periods, wherein the configuration message received by the terminal device is at least partially based on the CHO-related message.

[0296] In some embodiments of the present invention, the CHO-related message is a CHO request response message, and wherein, before the first network node receives the CHO-related message sent by each of the multiple network nodes corresponding to each of the multiple second time periods, the first network node sends a CHO request message to each of the multiple network nodes corresponding to each of the multiple second time periods.

[0297] Exemplarily, the CHO request message may correspond to the HO request message described above with reference to Figures 2 to 7. Taking the CHO request message as an example, it may be used to inquire / request the target (e.g., candidate) network node whether the target (e.g., candidate) network node is to join the sequential CHO process, so that the terminal device (e.g., user equipment) can subsequently selectively switch to the target (e.g., candidate) network node or access the network of the target (e.g., candidate) network node.

[0298] Exemplarily, the CHO request response message may correspond to the HO request ACK message described above with reference to Figures 2 to 7. Taking the CHO request response message as an example, it may be used to indicate that a target (e.g., candidate) network node agrees / refuses to join the sequential CHO process, so as to determine whether to include the network node as a candidate network node in the sequential CHO process, so that a terminal device (e.g., user equipment) can subsequently selectively switch to the target (e.g., candidate) network node or access the network of the target (e.g., candidate) network node (e.g., as described above, when the CHO conditions of the network node are met).

[0299] In some embodiments of the present invention, the CHO request message is sent by the first network node in response to a CHO decision made by the first network node to perform the CHO.

[0300] In some embodiments of the present invention, before receiving the configuration message from the first network node, the method also includes sending a measurement report message to the first network node, and wherein the CHO decision is made by the first network node based on the measurement report message sent from the terminal device and received by the first network node.

[0301] In some embodiments of the present invention, the CHO request message and / or the CHO request response message are transmitted via a third network node. This allows for adapting to situations where, for example, there is no Xn interface / ISL between the gNB / satellite, thereby improving system compatibility.

[0302] Exemplarily, the third network node may be a node in the network control plane, such as in LTE, the third network node may be an MME (Mobility Management Entity), in 5G NR, the third network node may be an AMF (Access and Mobility Management Function), and so on. This document does not impose any restrictions on this.

[0303] In some embodiments of the present invention, the configuration message is carried by dedicated signaling, broadcast signaling, or a combination of dedicated signaling and broadcast signaling.

[0304] Exemplarily, the dedicated signaling may include RRC message signaling (as described above), NAS (Non-Access Stratum) signaling, or any other suitable signaling, which is not limited herein.

[0305] Exemplarily, the broadcast signaling may include a paging message, a system message (such as a SIB (System Information Block)), etc., which is not limited in this document.

[0306] In some embodiments of the present invention, the CHO-related configuration information includes a CHO configuration or a CHO index associated with the CHO configuration. Therefore, if the complete CHO configuration pre-configured for a terminal device cannot reflect real-time network changes, the index can be used to represent and transmit the real-time changed CHO configuration in an incremental manner, thereby improving system flexibility.

[0307] Exemplarily, the CHO index associated with the CHO configuration can be any identification ID described above, for example, the index consisting of the first ID and the second ID described in Table 2, the new ID described in Table 5, the first ID described in Solution 2.1.3 (for example, the time period to which each candidate cell belongs can be implicitly obtained from such a first ID), etc. This document does not impose any restrictions on this.

[0308] In some embodiments of the present invention, the CHO configuration includes a CHO-related configuration ID, a measurement-related ID, and a container.

[0309] For example, the CHO-related configuration ID may be the first ID described above, which is not limited herein. As an example and not a limitation, the first ID may be a conditional reconfiguration information element CondReconfigID in various 3GPP releases, such as CondReconfigID-r16, or any suitable variant thereof.

[0310] Illustratively, the measurement-related ID may be the measID described above, and the container may be the container described above.

[0311] In some embodiments of the present invention, each of the plurality of second time periods is associated with a time-related ID.

[0312] In some embodiments of the present invention, the configuration message includes the CHO configuration and the time correlation ID.

[0313] In some embodiments of the present invention, the CHO index is obtained by combining the CHO-related configuration ID and the time-related ID.

[0314] In some embodiments of the present invention, each of the plurality of network nodes corresponding to each of the plurality of second time periods is assigned a unique ID, where the unique ID is obtained by combining the time-related ID and the CHO-related configuration ID.

[0315] In some embodiments of the present invention, the CHO configuration includes the unique ID, the measurement-related ID, and the container.

[0316] Exemplarily, the unique ID may be the new ID described above or any suitable variation thereof, which is not limited herein.

[0317] In some embodiments of the present invention, the CHO-related configuration ID indicates a second time period corresponding to each of the plurality of network nodes.

[0318] Through the above method, each candidate network node can be effectively distinguished in time, thereby improving the accuracy of the system.

[0319] In some embodiments of the present invention, the time-related ID includes any one of an index, a reference time and an offset, or a mapping relationship.

[0320] In some embodiments of the present invention, the configuration message further includes measurement-related configuration information of each of the plurality of network nodes.

[0321] In some embodiments of the present invention, the measurement-related configuration information is provided by the first network node.

[0322] In some embodiments of the present invention, the measurement-related configuration is common to the plurality of second network nodes.

[0323] In some embodiments of the present invention, the CHO configuration includes one or more container lists, each of which includes multiple containers corresponding to a same measurement-related ID.

[0324] In some embodiments of the present invention, the containers include configuration information of the same portion.

[0325] Exemplarily, the configuration information of the same part may be the sameconfig described above.

[0326] In some embodiments of the present invention, the configuration information of the same portion is informed to the first network node by at least one network node among the plurality of network nodes.

[0327] In some embodiments of the present invention, the configuration information of the same portion is obtained by the first network node by analyzing the received CHO-related message.

[0328] In some embodiments of the present invention, receiving the configuration message from the first network node includes receiving the same portion of configuration information from the first network node and the remaining portion of configuration information in the container from each of the plurality of network nodes, excluding the same portion of configuration information. This effectively reduces signaling overhead required to transmit the container, improving communication efficiency.

[0329] In some embodiments of the present invention, the configuration information of the same part includes at least one of the following information elements IE: Spcellconfigcommon, NewUE-Identity, T304, RACH-configDedicated, or SMTC.

[0330] FIG10 is a schematic diagram of an exemplary scenario involving switching of a service node / relay device in an exemplary wireless communication network provided in an embodiment of the present application.

[0331] As shown in Figure 10, w1 represents the current time period. The duration following the current time period w1 is illustratively divided into at least three time periods c1, c2, and c3. Ellipses indicate that there may be more subsequent time periods for division, which are not shown for the sake of simplicity. Exemplarily, each subsequent time period includes three time spans, each of which may be substantially the same as the time span of the current time period. Of course, this document does not impose any limitations on this. Due to factors such as the capacity of satellite base stations and limited communication distance, the scenario described above where the serving base station (e.g., serving gNB) in the current time period obtains the configurations of all candidate base stations corresponding to all subsequent time periods at once may not be achievable in practice. Therefore, Figure 10 provides a compromise solution for some practical situations in the above embodiments. In this scenario, the serving base station in the current time period obtains the configurations of each candidate base station corresponding to the subsequent time period c1 during time period w1 (in other words, the serving base station in the current time period transmits the configurations of each candidate base station corresponding to the subsequent time period c1 to the terminal device during time period w1). Then, as the time step progresses, it arrives at the second time period w2 (in FIG. 10 , w2 is shown as starting first in the larger time period c1). At this time, the service base station in the second time period w2 obtains the configuration of each candidate base station corresponding to the subsequent time period c2. Similarly, as the time step progresses, it arrives at the third time period w3. At this time, the service base station in the third time period w3 obtains the configuration of each candidate base station corresponding to the subsequent time period c3. Optionally, the second time period can be separated from the first time period w1, for example, w2' or w2", as long as the second time period starts before c2. Similarly, the third time period can also be separated from the second time period. Optionally, the interval between two adjacent time periods w in each group can be the same or different, and this article does not impose any restrictions on this. In this way, a sequential CHO scheme is provided that takes factors such as the capacity of the satellite base station and the limited communication distance into consideration, while also reducing the signaling overhead between the terminal device and the network side.

[0332] Figure 11 is a schematic diagram of another exemplary scenario involving the switching of service nodes / relay devices in the example wireless communication network provided by an embodiment of the present application. Figure 11 provides another compromise solution for the above embodiment in some practical situations, and the difference between Figure 11 and Figure 10 is that there is overlap between the subsequent time periods for the current time period w1. Specifically, the service base station in the current time period obtains the configuration of each candidate base station corresponding to the subsequent time period c1 within the w1 time period (it can also be said that the service base station in the current time period sends the configuration of each candidate base station corresponding to the subsequent time period c1 to the terminal device within the w1 time period). Subsequently, as the time step advances, it comes to the second time period w2 (w2 is shown in Figure 10 as starting first in the larger time period c1). At this time, the service base station in the second time period w2 obtains the configuration of each candidate base station corresponding to the subsequent time period c2, and there is a time interval between time periods c2 and c1 with a time span that is substantially the same as the current time period w1. By analogy, as the time step progresses, we arrive at the third time period w3. At this time, the serving base station in the third time period w3 obtains the configuration of each candidate base station corresponding to the subsequent time period c3. Similarly, there is a time interval between time periods c3 and c2 with a time span that is basically the same as the current time period w1. Optionally, the second time period can be separated from the first time period w1, for example, w2', as long as the second time period starts before c2. Similarly, the third time period can also be separated from the second time period (for example, as shown in the figure, when w2 and w1 are not separated). Optionally, the intervals between two adjacent time periods w in each group can be the same or different (for example, there is no interval or there is an interval, etc.), and this document does not impose any restrictions on this. In this way, a sequential CHO scheme is provided that takes into account factors such as the capacity of the satellite base station and the limited communication distance, and can also reduce the signaling overhead between the terminal device and the network side.

[0333] The following provides some exemplary embodiments of the present invention from the perspective of a network node acting as a service node. It will be understood that these exemplary embodiments are provided for illustrative purposes only. Those skilled in the art can conceive of any suitable modifications, additions, deletions, variations, and / or combinations thereof based on the description and teachings of the present invention, thereby easily obtaining equivalent implementations of these exemplary embodiments.

[0334] In some embodiments of the present invention, as shown in FIG12 , a wireless communication method is provided, which is executed on a network node, wherein the method includes step 1201: sending a configuration message to a terminal device served by a network node acting as a service node, wherein the configuration message includes conditional switching CHO-related configuration information for multiple second time periods after a first time period in which the service node serves the terminal device, and during any of the second time periods, one of the multiple network nodes corresponding to the second time period acts as the service node and serves the terminal device. In this way, while taking into account factors such as the capacity of the satellite base station and the limited communication distance, the terminal device can receive CHO-related configuration information for several future consecutive time periods in advance, and in multiple subsequent time periods, there is no need to interact with the network side for CHO-related signaling, thereby saving signaling overhead.

[0335] In some embodiments of the present invention, the first time period includes the 0th first time period [T0, T1], and the plurality of second time periods after the 0th first time period are [T1, T2] to [Tm, Tm+1], where m≥2 and is an integer.

[0336] The first time period also includes the i-th first time period, and the multiple second time periods after the i-th first time period are [T1+i*k, T2+i*k] to [Tm+i*k, Tm+1+i*k], where 1≤i≤N, 1≤k≤m-1, i, k are integers and N is a preset positive integer.

[0337] The configuration message sent by the network node acting as the service node to the terminal device during the 0th time period [T0, T1] includes CHO-related configuration information for the time period [T1, T2] to [Tm, Tm+1],

[0338] And wherein, the configuration message sent by the network node acting as the service node to the terminal device during the i-th first time period includes CHO-related configuration information for a total of k time periods starting from the time period [Tm+i*k, Tm+1+i*k] in the multiple second time periods [T1+i*k, T2+i*k] to [Tm+i*k, Tm+1+i*k] after the i-th first time period.

[0339] In some embodiments of the present invention, the first time period includes the 0th first time period [T0, T1], and the plurality of second time periods after the 0th first time period are [T1, T2] to [Tm, Tm+1], where m≥2 and is an integer.

[0340] The first time period further includes an i-th first time period, and the plurality of second time periods after the i-th first time period are [T1+i*m, T2+i*m] to [T(i+1)*m, T(i+1)*m+1], wherein 1≤i≤N, i is an integer and N is a preset positive integer.

[0341] The configuration message sent by the network node acting as the service node to the terminal device during the 0th time period [T0, T1] includes CHO-related configuration information for the time period [T1, T2] to [Tm, Tm+1],

[0342] And wherein, the configuration message sent by the network node acting as the service node to the terminal device during the i-th first time period includes the CHO-related configuration information of the multiple second time periods [T1+i*m, T2+i*m] to [T(i+1)*m, T(i+1)*m+1] after the i-th first time period.

[0343] In some embodiments of the present invention, the 0th first time period to the i-th first time period are arranged continuously in time.

[0344] In some embodiments of the present invention, there is a time interval between at least two adjacent time periods from the 0th first time period to the ith first time period, and the ith first time period is before the time period [T1+i*k, T2+i*k].

[0345] In some embodiments of the present invention, there is a time interval between at least two adjacent time periods from the 0th first time period to the ith first time period, and the ith first time period is before the time period [T1+i*m, T2+i*m].

[0346] In some embodiments of the present invention, before sending a configuration message to a terminal device served by the network node acting as the service node, the method further includes:

[0347] receiving a CHO-related message sent by each of the plurality of network nodes corresponding to each of the plurality of second time periods; and

[0348] The configuration message is sent to the terminal device based on the CHO-related message.

[0349] In some embodiments of the present invention, the CHO-related message is a CHO request response message, and before receiving the CHO-related message sent by each of the plurality of network nodes corresponding to each of the plurality of second time periods, the method further includes:

[0350] A CHO request message is sent to each of the plurality of network nodes corresponding to each of the plurality of second time periods.

[0351] In some embodiments of the present invention, the CHO request message is sent by the network node acting as the serving node in response to a CHO decision made by the network node during the 0th first time period [T0, T1] to perform CHO.

[0352] In some embodiments of the present invention, before sending a configuration message to a terminal device served by the network node acting as the service node, the method further includes:

[0353] receiving a CHO-related message sent by each of the plurality of network nodes corresponding to each of the plurality of second time periods [T1+i*k, T2+i*k] to [Tm+i*k, Tm+1+i*k], starting from the time period [Tm+i*k, Tm+1+i*k] and counting forward for a total of k time periods, in the plurality of second time periods [T1+i*k, T2+i*k] after the i-th first time period; and

[0354] The configuration message is sent to the terminal device based on the CHO-related message.

[0355] In some embodiments of the present invention, the CHO-related message is a CHO request response message, and before receiving the CHO-related message sent by each of the plurality of network nodes corresponding to each of the plurality of second time periods [T1+i*k, T2+i*k] to [Tm+i*k, Tm+1+i*k] starting from the time period [Tm+i*k, Tm+1+i*k] and counting forward for a total of k time periods after the i-th first time period, the method further includes:

[0356] A CHO request message is sent to each of the multiple network nodes corresponding to each of the multiple second time periods [T1+i*k, T2+i*k] to [Tm+i*k, Tm+1+i*k] after the i-th first time period, starting from the time period [Tm+i*k, Tm+1+i*k] and counting forward for a total of k time periods.

[0357] In some embodiments of the present invention, the CHO request message is sent by the network node acting as the serving node in response to a CHO decision made by the network node during the 0th first time period [T0, T1] to perform CHO.

[0358] In some embodiments of the present invention, the CHO decision is made based on a measurement report message sent by the terminal device and received from the terminal device by the network node acting as the serving node during the 0th first time period [T0, T1].

[0359] The following provides some exemplary embodiments of the present invention from the perspective of terminal devices. It will be understood that these exemplary embodiments are provided for illustrative purposes only. Those skilled in the art can conceive of any suitable modifications, additions, deletions, variations, and / or combinations of these exemplary embodiments based on the description and teachings of the present invention, thereby easily obtaining equivalent implementations of these exemplary embodiments.

[0360] In some embodiments of the present invention, as shown in FIG13 , a wireless communication method is provided, which is executed on a terminal device, wherein the method includes step 1301: receiving a configuration message from a network node acting as a service node, the configuration message including conditional switching CHO-related configuration information for multiple second time periods after the first time period in which the service node serves the terminal device, and during any of the second time periods, one of the multiple network nodes corresponding to the second time period acts as the service node and serves the terminal device. In this way, while taking into account factors such as the capacity of the satellite base station and the limited communication distance, the terminal device can receive CHO-related configuration information for several future consecutive time periods in advance, and in multiple subsequent time periods, there is no need to interact with the network side for CHO-related signaling, thereby saving signaling overhead.

[0361] In some embodiments of the present invention, the first time period includes the 0th first time period [T0, T1], and the plurality of second time periods after the 0th first time period are [T1, T2] to [Tm, Tm+1], where m≥2 and is an integer.

[0362] The first time period also includes the i-th first time period, and the multiple second time periods after the i-th first time period are [T1+i*k, T2+i*k] to [Tm+i*k, Tm+1+i*k], where 1≤i≤N, 1≤k≤m-1, i, k are integers and N is a preset positive integer.

[0363] The configuration message received from the network node acting as the serving node during the 0th time period [T0, T1] includes CHO-related configuration information for the time period [T1, T2] to [Tm, Tm+1],

[0364] And wherein, the configuration message received from the network node acting as the service node during the i-th first time period includes CHO-related configuration information for a total of k time periods starting from the time period [Tm+i*k, Tm+1+i*k] among the multiple second time periods [T1+i*k, T2+i*k] to [Tm+i*k, Tm+1+i*k] after the i-th first time period.

[0365] In some embodiments of the present invention, the first time period includes the 0th first time period [T0, T1], and the plurality of second time periods after the 0th first time period are [T1, T2] to [Tm, Tm+1], where m≥2 and is an integer.

[0366] The first time period further includes an i-th first time period, and the plurality of second time periods after the i-th first time period are [T1+i*m, T2+i*m] to [T(i+1)*m, T(i+1)*m+1], wherein 1≤i≤N, i is an integer and N is a preset positive integer.

[0367] The configuration message received from the network node acting as the serving node during the 0th time period [T0, T1] includes CHO-related configuration information for the time period [T1, T2] to [Tm, Tm+1],

[0368] And wherein, the configuration message received from the network node acting as the serving node during the i-th first time period includes the CHO-related configuration information of the multiple second time periods [T1+i*m, T2+i*m] to [T(i+1)*m, T(i+1)*m+1] after the i-th first time period.

[0369] In some embodiments of the present invention, the 0th first time period to the i-th first time period are arranged continuously in time.

[0370] In some embodiments of the present invention, there is a time interval between at least two adjacent time periods from the 0th first time period to the ith first time period, and the ith first time period is before the time period [T1+i*k, T2+i*k].

[0371] In some embodiments of the present invention, there is a time interval between at least two adjacent time periods from the 0th first time period to the ith first time period, and the ith first time period is before the time period [T1+i*m, T2+i*m].

[0372] In some embodiments of the present invention, before the terminal device receives the configuration message from the network node acting as the service node, the network node receives a CHO-related message sent by each of the multiple network nodes corresponding to each of the multiple second time periods, and the configuration message is at least partially based on the CHO-related message.

[0373] In some embodiments of the present invention, the CHO-related message is a CHO request response message, and wherein, before the network node receives the CHO-related message sent by each of the multiple network nodes corresponding to each of the multiple second time periods, the network node sends a CHO request message to each of the multiple network nodes corresponding to each of the multiple second time periods.

[0374] In some embodiments of the present invention, the CHO request message is sent by the network node acting as the serving node in response to a CHO decision made by the network node during the 0th first time period [T0, T1] to perform CHO.

[0375] In some embodiments of the present invention, before the terminal device receives the configuration message from the network node acting as the service node, the network node receives a CHO-related message sent by each of the multiple network nodes corresponding to each of the multiple second time periods [T1+i*k, T2+i*k] to [Tm+i*k, Tm+1+i*k] after the i-th first time period, starting from the time period [Tm+i*k, Tm+1+i*k] and counting forward for a total of k time periods, and the configuration message is at least partially based on the CHO-related message.

[0376] In some embodiments of the present invention, the CHO-related message is a CHO request response message, and wherein, before the network node receives the CHO-related message sent to each of the multiple network nodes corresponding to each other in the multiple second time periods [T1+i*k, T2+i*k] to [Tm+i*k, Tm+1+i*k] after the i-th first time period, the network node sends a CHO request message to each of the multiple network nodes corresponding to each other in the multiple second time periods [T1+i*k, T2+i*k] to [Tm+i*k, Tm+1+i*k] after the i-th first time period, starting from the time period [Tm+i*k, Tm+1+i*k] and counting forward for a total of k time periods.

[0377] In some embodiments of the present invention, the CHO request message is sent by the network node acting as the serving node in response to a CHO decision made by the network node during the 0th first time period [T0, T1] to perform CHO.

[0378] In some embodiments of the present invention, the CHO decision is made based on a measurement report message sent by the terminal device and received from the terminal device by the network node acting as the serving node during the 0th first time period [T0, T1].

[0379] Example 3: Satellite handover scenario

[0380] In integrated air-ground networks (e.g., NTN), there are scenarios where HO is not involved, such as the unchanged PCI scenario defined in Release 18. Furthermore, in some cases, even if the satellite and, potentially, the PCI change, a HO may not occur as long as the gNB remains unchanged. For the terminal device (e.g., UE), only a handover to the satellite occurs.

[0381] To distinguish this from the sequential CHO described above, this document refers to the scenario where the UE switches satellites (e.g., in this scenario, the satellite serves as an antenna for transmission between the UE and the base station) but the base station (e.g., gNB) does not change as far as the UE is concerned. Accordingly, the process involving satellite switching over multiple subsequent time periods is called sequential satellite switching. During sequential satellite switching, the satellite can function as an antenna for the UE (e.g., the satellite only acts as a relay or relay, amplifying and forwarding signals transmitted in the integrated air-space-ground network). Other elements that change during sequential CHO, such as the physical layer ID, frequency, and base station (e.g., gNB) to which the satellite is connected, do not change. This sequential satellite switching process does not involve HO at higher levels, but does involve physical layer (PHY) synchronization for uplink and downlink links. Therefore, the network needs to inform the UE of candidate satellites for multiple future time periods so that the UE can synchronize with the new satellite without performing a HO, thereby switching from the current satellite to the new satellite from the UE's perspective.

[0382] As described above, during the HO process, the information that the serving gNB needs to provide to the UE may include the first ID, second ID, measID, container, and other information. In the satellite handover scenario, the serving satellite currently serving the UE (e.g., providing transparent transmission between the UE and the current base station (e.g., gNB)) also needs to provide the UE with information about satellites in multiple future time periods, including, but not limited to, the following IEs:

[0383] TA (Timing Advance) related parameters, such as command TA;

[0384] ·K_mac;

[0385] The ephemeris of the candidate cell;

[0386] Cell-specific K-offset

[0387] ·SSB information of candidate cells; etc.

[0388] In some embodiments of the present invention, for a satellite switching scenario, the serving satellite needs to inform the UE of at least the above information of satellites in multiple future time periods, and / or information such as the first ID, the second ID, the measID, and the container.

[0389] In some embodiments of the present invention, the above configuration may be sent to the UE via a dedicated signaling message (e.g., an RRCReconfiguration message), may be notified to the UE via broadcast or pre-configuration, or may be sent to the UE partially via broadcast and partially via dedicated signaling. The present invention does not impose any limitation on this.

[0390] Some exemplary embodiments of the present invention are provided below from the perspective of the first relay device. It will be appreciated that these exemplary embodiments are provided for illustrative purposes only. Those skilled in the art can conceive of any suitable modifications, additions, deletions, variations, and / or combinations thereof based on the description and teachings of the present invention, thereby easily obtaining equivalent implementations of these exemplary embodiments.

[0391] In some embodiments of the present invention, as shown in FIG14 , a wireless communication method is provided, which is executed on a first relay device, wherein the method includes step 1401: sending a configuration message to a terminal device, wherein the configuration message includes relay device switching-related configuration information for multiple second time periods after a first time period, wherein the first time period is the duration for the first relay device to relay the communication between the terminal device and the network node, and the relay device switching-related configuration information is used to instruct the terminal device to perform the relay device switching corresponding to the second time period during each second time period. In this way, the terminal device can receive relay device switching-related configuration information for several future consecutive time periods in advance, and in multiple subsequent time periods, there is no need to interact with the network side for related signaling, thereby saving signaling overhead.

[0392] In some embodiments of the present invention, the configuration message is carried by dedicated signaling, broadcast signaling, or a combination of dedicated signaling and broadcast signaling.

[0393] In some embodiments of the present invention, the configuration message includes the relay device switching related configuration information and a time-related ID.

[0394] In some embodiments of the present invention, the relay device handover related configuration information includes at least one of the following information elements IE: TA related parameters, K_mac, ephemeris of the candidate cell, cell-specific K offset, and SSB information of the candidate cell.

[0395] The following provides some exemplary embodiments of the present invention from the perspective of terminal devices. It will be understood that these exemplary embodiments are provided for illustrative purposes only. Those skilled in the art can conceive of any suitable modifications, additions, deletions, variations, and / or combinations of these exemplary embodiments based on the description and teachings of the present invention, thereby easily obtaining equivalent implementations of these exemplary embodiments.

[0396] In some embodiments of the present invention, as shown in FIG15 , a wireless communication method is provided, which is executed on a terminal device, wherein the method includes step 1501: receiving a configuration message from a first relay device, wherein the configuration message includes relay device switching-related configuration information for multiple second time periods after a first time period, wherein the first time period is the duration for the first relay device to relay the communication between the terminal device and the network node, and the relay device switching-related configuration information is used to instruct the terminal device to perform the relay device switching corresponding to the second time period during each second time period. In this way, the terminal device can receive relay device switching-related configuration information for several future consecutive time periods in advance, and in multiple subsequent time periods, there is no need to interact with the network side for related signaling, thereby saving signaling overhead.

[0397] In some embodiments of the present invention, the configuration message is carried by dedicated signaling, broadcast signaling, or a combination of dedicated signaling and broadcast signaling.

[0398] In some embodiments of the present invention, the configuration message includes the relay device switching related configuration information and a time-related ID.

[0399] In some embodiments of the present invention, the relay device handover related configuration information includes at least one of the following information elements IE: TA related parameters, K_mac, ephemeris of the candidate cell, cell-specific K offset, and SSB information of the candidate cell.

[0400] It should be noted that due to factors such as the capacity of the satellite base station and the limited communication distance, the scenario described above where the serving relay device in the current time period obtains the configurations (e.g., configuration parameters) of all candidate relay devices corresponding to all subsequent time periods at once may not be achievable in practice. Therefore, this document provides, with reference to Figures 10 and 11, compromise solutions for some practical situations in some of the above-described embodiments.

[0401] Below provide some exemplary embodiments of the present invention from the perspective of the first relay device that acts as a service relay device.It will be appreciated that these exemplary embodiments are provided for the purpose of illustrative explanation only.Those skilled in the art can conceive any suitable modification, addition, deletion, variation and / or combination etc. for these exemplary embodiments under the description and teaching of the present invention, thereby easily obtain equivalent implementation manners of these exemplary embodiments.

[0402] In some embodiments of the present invention, as shown in FIG16 , a wireless communication method is provided, which is executed on a relay device, wherein the method includes step 1601: sending a configuration message to a terminal device served by a relay device acting as a service relay device, the configuration message including relay device switching-related configuration information for multiple second time periods after a first time period in which the service relay device serves the terminal device, and during any of the second time periods, one of the multiple relay devices corresponding to the second time period acts as the service relay device and serves the terminal device. In this way, while taking factors such as the capacity of the relay device and the limited communication distance into consideration, the terminal device can receive relay device switching-related configuration information for several future consecutive time periods in advance, and in multiple subsequent time periods, there is no need to interact with the network side for related signaling, thereby saving signaling overhead.

[0403] In some embodiments of the present invention, the first time period includes the 0th first time period [T0, T1], and the plurality of second time periods after the 0th first time period are [T1, T2] to [Tm, Tm+1], where m≥2 and is an integer.

[0404] The first time period also includes the i-th first time period, and the multiple second time periods after the i-th first time period are [T1+i*k, T2+i*k] to [Tm+i*k, Tm+1+i*k], where 1≤i≤N, 1≤k≤m-1, i, k are integers and N is a preset positive integer.

[0405] The configuration message sent by the relay device acting as the serving relay device to the terminal device during the 0th time period [T0, T1] includes relay device switching related configuration information for the time period [T1, T2] to [Tm, Tm+1],

[0406] And wherein, the configuration message sent by the relay device acting as the service relay device to the terminal device during the i-th first time period includes the relay device switching related configuration information for a total of k time periods starting from the time period [Tm+i*k, Tm+1+i*k] in the multiple second time periods [T1+i*k, T2+i*k] to [Tm+i*k, Tm+1+i*k] after the i-th first time period.

[0407] In some embodiments of the present invention, the first time period includes the 0th first time period [T0, T1], and the plurality of second time periods after the 0th first time period are [T1, T2] to [Tm, Tm+1], where m≥2 and is an integer.

[0408] The first time period further includes an i-th first time period, and the plurality of second time periods after the i-th first time period are [T1+i*m, T2+i*m] to [T(i+1)*m, T(i+1)*m+1], where 1≤i≤N, i is an integer and N is a preset positive integer.

[0409] The configuration message sent by the relay device acting as the serving relay device to the terminal device during the 0th time period [T0, T1] includes relay device switching related configuration information for the time period [T1, T2] to [Tm, Tm+1],

[0410] And wherein, the configuration message sent by the relay device acting as the service relay device to the terminal device during the i-th first time period includes the relay device switching related configuration information of the multiple second time periods [T1+i*m, T2+i*m] to [T(i+1)*m, T(i+1)*m+1] after the i-th first time period.

[0411] In some embodiments of the present invention, the 0th first time period to the i-th first time period are arranged continuously in time.

[0412] In some embodiments of the present invention, there is a time interval between at least two adjacent time periods from the 0th first time period to the ith first time period, and the ith first time period is before the time period [T1+i*k, T2+i*k].

[0413] In some embodiments of the present invention, there is a time interval between at least two adjacent time periods from the 0th first time period to the ith first time period, and the ith first time period is before the time period [T1+i*m, T2+i*m].

[0414] In some embodiments of the present invention, the configuration message is carried by dedicated signaling, broadcast signaling, or a combination of dedicated signaling and broadcast signaling.

[0415] In some embodiments of the present invention, the configuration message includes the relay device switching related configuration information and a time-related ID.

[0416] In some embodiments of the present invention, the relay device handover related configuration information includes at least one of the following information elements: TA related parameters, K_mac, ephemeris of the candidate cell, cell-specific K offset, and SSB information of the candidate cell.

[0417] The following provides some exemplary embodiments of the present invention from the perspective of terminal devices. It will be understood that these exemplary embodiments are provided for illustrative purposes only. Those skilled in the art can conceive of any suitable modifications, additions, deletions, variations, and / or combinations of these exemplary embodiments based on the description and teachings of the present invention, thereby easily obtaining equivalent implementations of these exemplary embodiments.

[0418] In some embodiments of the present invention, as shown in FIG17 , a wireless communication method is provided, which is executed on a terminal device, wherein the method includes step 1701: receiving a configuration message from a relay device acting as a service relay device, the configuration message including relay device switching-related configuration information for multiple second time periods after the first time period in which the service relay device serves the terminal device, and during any of the second time periods, one of the multiple relay devices corresponding to the second time period acts as the service relay device and serves the terminal device. In this way, while taking factors such as the capacity of the relay device and the limited communication distance into consideration, the terminal device can receive relay device switching-related configuration information for several future consecutive time periods in advance, and in the subsequent multiple time periods, there is no need to interact with the network side for related signaling, thereby saving signaling overhead.

[0419] In some embodiments of the present invention, the first time period includes the 0th first time period [T0, T1], and the plurality of second time periods after the 0th first time period are [T1, T2] to [Tm, Tm+1], where m≥2 and is an integer.

[0420] The first time period also includes the i-th first time period, and the multiple second time periods after the i-th first time period are [T1+i*k, T2+i*k] to [Tm+i*k, Tm+1+i*k], where 1≤i≤N, 1≤k≤m-1, i, k are integers and N is a preset positive integer.

[0421] The configuration message received from the relay device acting as the serving relay device during the 0th time period [T0, T1] includes relay device handover related configuration information for the time period [T1, T2] to [Tm, Tm+1],

[0422] And wherein, the configuration message received from the relay device acting as the service relay device during the i-th first time period includes the relay device switching related configuration information for a total of k time periods starting from the time period [Tm+i*k, Tm+1+i*k] in the multiple second time periods [T1+i*k, T2+i*k] to [Tm+i*k, Tm+1+i*k] after the i-th first time period.

[0423] In some embodiments of the present invention, the first time period includes the 0th first time period [T0, T1], and the plurality of second time periods after the 0th first time period are [T1, T2] to [Tm, Tm+1], where m≥2 and is an integer.

[0424] The first time period further includes an i-th first time period, and the plurality of second time periods after the i-th first time period are [T1+i*m, T2+i*m] to [T(i+1)*m, T(i+1)*m+1], wherein 1≤i≤N, i is an integer and N is a preset positive integer.

[0425] The configuration message received from the relay device acting as the serving relay device during the 0th time period [T0, T1] includes relay device handover related configuration information for the time period [T1, T2] to [Tm, Tm+1],

[0426] And wherein, the configuration message received from the relay device acting as the service relay device during the i-th first time period includes the relay device switching related configuration information of the multiple second time periods [T1+i*m, T2+i*m] to [T(i+1)*m, T(i+1)*m+1] after the i-th first time period.

[0427] In some embodiments of the present invention, the 0th first time period to the i-th first time period are arranged continuously in time.

[0428] In some embodiments of the present invention, there is a time interval between at least two adjacent time periods from the 0th first time period to the ith first time period, and the ith first time period is before the time period [T1+i*k, T2+i*k].

[0429] In some embodiments of the present invention, there is a time interval between at least two adjacent time periods from the 0th first time period to the ith first time period, and the ith first time period is before the time period [T1+i*m, T2+i*m].

[0430] In some embodiments of the present invention, the configuration message is carried by dedicated signaling, broadcast signaling, or a combination of dedicated signaling and broadcast signaling.

[0431] In some embodiments of the present invention, the configuration message includes the relay device switching related configuration information and a time-related ID.

[0432] In some embodiments of the present invention, the relay device handover related configuration information includes at least one of the following information elements: TA related parameters, K_mac, ephemeris of the candidate cell, cell-specific K offset, and SSB information of the candidate cell.

[0433] Example 4. How to modify / update sequential CHO / satellite handover configuration

[0434] 4.1 If the gNB / satellite configuration is updated, the gNB / satellite can notify the UE through the following mechanism

[0435] 4.1.1 Solution 1: Configuration changes are proactively notified by gNB / satellite

[0436] Step 1: The gNB / satellite whose configuration has changed sends a message to the CN (AMF) / gNB to notify it that the configuration has been updated.

[0437] Alternative Solution 1: The gNB / satellite only notifies the UE that its configuration has been updated, and there is no need to send the updated configuration to the CN / gNB.

[0438] Alternative 2: In addition to notifying the UE that the configuration has been updated, the gNB / satellite also sends the updated configuration to the CN / gNB.

[0439] Step 2: Optionally, the CN / gNB sends the serving gNB / satellite currently serving the UE and / or the gNB / satellite recommended or designated by the CN / gNB to send the updated configuration to the UE.

[0440] In step 3, regarding who is responsible for sending the updated configuration to the serving gNB / satellite serving the UE or the gNB / satellite used to send the updated configuration, there are the following exemplary solutions.

[0441] Alternative 1: The CN / gNB is responsible for sending the updated configuration to the serving gNB / satellite currently serving the UE or the gNB / satellite used to send the updated configuration (if the CN / satellite is responsible, Alternative 2 must be used in step 1).

[0442] The reason for considering the non-serving gNB / satellite to send the configuration here is that, taking into account propagation delay, if the gNB / satellite in time period 1 is serving the UE, but the configuration of the gNB / satellite in time period 5 changes, the CN / gNB can consider sending the updated configuration to the gNB / satellite in time period 3, because the gNB / satellite sent to time periods 1 and 2 may not have enough time to transmit the configuration to the UE.

[0443] Alternative solution 2: The gNB / satellite where the configuration has changed is responsible for sending the updated configuration to the serving gNB / satellite currently serving the UE or the gNB / satellite used to send the updated configuration (if this alternative is used, step 2 is mandatory).

[0444] If an Xn interface / ISL exists between the gNB / satellite with the changed configuration and the serving / non-serving gNB / satellite, the gNB / satellite with the changed configuration can directly send the updated configuration to the serving / non-serving gNB / satellite.

[0445] Here, the decision is whether to send the message to the serving gNB / satellite or a non-serving gNB / satellite. If the CN / gNB in ​​step 2 provides specific information, the message is sent based on that information. If not, the gNB / satellite with the changed configuration will be responsible for determining the message, referencing the recommended information in step 2 (if provided).

[0446] If no Xn interface / ISL exists between the gNB / satellite with the changed configuration and the serving / non-serving gNB / satellite, the gNB / satellite with the changed configuration notifies the CN / gNB to send the updated configuration to the serving / non-serving gNB / satellite (if Alternative 1 is used in step 1, the updated configuration must also be sent to the CN). The gNB / satellite with the changed configuration may provide recommended or designated serving / non-serving gNB / satellite information while notifying the CN / gNB.

[0447] Here, the decision is whether to send the message to the serving gNB / satellite or a non-serving gNB / satellite. If the gNB / satellite with the changed configuration provides specific information to the CN / gNB, the CN / gNB will make the decision based on that information. If not, the CN / gNB will make the decision based on the recommendation provided by the gNB / satellite with the changed configuration (if provided).

[0448] 4.1.2 Solution 2: UE periodically obtains updated configuration

[0449] In some embodiments of the present invention, a control mechanism for the validity period of a sequential CHO configuration may be configured. The control mechanism may be a timer, a threshold for the number of satellite handoffs, or a threshold for the number of HO attempts. When the NW delivers the sequential CHO configuration, it also delivers the configuration of the control mechanism to the UE, such as the timer duration, the threshold for the number of satellite handoffs, or the threshold for the number of HO attempts.

[0450] In some embodiments of the present invention, when a timer expires or the number of satellite handovers / UE HOs reaches a set threshold, the UE needs to obtain an updated configuration.

[0451] In some embodiments of the present invention, if the configuration is sent out in a broadcast manner, the UE may obtain the updated configuration on its own.

[0452] In some embodiments of the present invention, if the configuration is sent via dedicated signaling, the UE needs to send signaling to the serving gNB to inform it that the updated configuration is required. After receiving the indication, the serving gNB sends the updated configuration to the UE.

[0453] In some embodiments of the present invention, the updated configuration sent may be a full configuration or a delta configuration.

[0454] 4.2 If the CN / gNB configuration is updated, or the CN / gNB is aware of the update, no notification from the gNB / satellite is required

[0455] If the CN / gNB configuration is updated, or the CN / gNB knows the updated status of each gNB / satellite, then in this case, no gNB / satellite notification is required and the CN / gNB sends the updated configuration to the serving gNB / satellite serving the UE or the gNB / satellite used to send the updated configuration.

[0456] The serving gNB / satellite serving the UE or the gNB / satellite used to send the updated configuration then sends the updated configuration to the UE.

[0457] In some embodiments of the present invention, the updated configuration sent may be a full configuration or a delta configuration.

[0458] 4.3 Solution 3: Send the updated configuration to multiple or all gNBs / satellites involved in sequential CHO

[0459] For configuration changes in 4.1 and 4.2, in addition to notifying the UE, multiple or all gNBs / satellites involved in the sequential CHO can also be notified. For example, if the sequential CHO involves gNBs / satellites in 10 time periods, if the configuration of a gNB / satellite or the CN configuration changes, all gNBs / satellites in these 10 time periods need to be notified. The specific solution is as follows:

[0460] Regarding 4.1, if an Xn interface / ISL exists between the gNB / satellite where the configuration is changed and the gNB / satellite to receive the updated configuration, the updated configuration can be sent directly to multiple / all gNBs / satellites involved in the sequential CHO and / or the updated configuration can be sent to the CN / gNB.

[0461] If there is no Xn interface / ISL between the gNB / satellite where the configuration has changed and the gNB / satellite to receive the updated configuration, the gNB / satellite where the configuration has changed shall send the updated configuration to the CN / gNB, which shall then send the updated configuration to the gNB / satellite to receive the updated configuration.

[0462] For 4.2, the CN / gNB needs to notify multiple or all gNBs / satellites involved in the sequential CHO and send the updated configuration. After receiving the updated configuration, the gNB / satellite sends it to the UE being served.

[0463] 4.4 Air Interface Configuration Changes

[0464] The configurations mentioned above may be sent to the UE via a dedicated signaling message (e.g., RRCReconfiguration), or may be notified to the UE via broadcast or pre-configuration (e.g., all information that may be pre-configured or broadcast to the UE as mentioned above). Alternatively, some of the configurations may be sent to the UE via broadcast and some via dedicated signaling.

[0465] For information sent to the UE via dedicated signaling, if the NW has an update, the UE can be notified of the update via dedicated signaling, such as through RRCReconfiguration. The update information can be a complete configuration, that is, completely overriding the previous configuration, or an incremental configuration (that is, only notifying the changed configuration).

[0466] For information notified to the UE via broadcast, the UE may be notified using a traditional SI update method, including the setting of a value tag or a modification indication.

[0467] For information given to the UE in a pre-configured manner, the UE may be notified via NAS signaling to update the pre-configuration.

[0468] The present invention describes an example of communication between a terminal and a network element component in a network architecture in the above embodiments, which is mainly for illustrative purposes and not restrictive.

[0469] The order of the steps (signaling / boxes) described is not intended to be interpreted as limiting, and any number of the steps (signaling / boxes) described can be skipped or combined in any order to implement a method or alternative method. Typically, any of the components, modules, methods, and operations described herein can be implemented using software, firmware, hardware (e.g., fixed logic circuitry), manual processing, or any combination thereof. Some operations of the example methods can be described in the general context of executable instructions stored on a computer-readable memory locally and / or remotely on a computer processing system, and implementation methods can include software applications, programs, functions, and the like. Alternatively or in addition, any function described herein can be performed, at least in part, by one or more hardware logic components, such as, but not limited to, a field programmable gate array (FPGA), an application specific integrated circuit (ASIC), an application specific standard product (ASSP), a system on a chip (SoC), a complex programmable logic device (CPLD), and the like.

[0470] In addition, the signaling described in the embodiments of the present invention can be implemented in any manner known in the art. For example, the signaling can be explicit and / or implicit. In addition, the steps (signaling / frames) shown are for illustrative purposes only and are not intended to limit the present application.

[0471] Figure 18 is a schematic structural diagram of a wireless communication device 900 provided in an embodiment of the present application. The wireless communication device can be a user equipment, a base station, or a network element. The wireless communication device 900 shown in Figure 18 includes a processor 910, which can call and execute a computer program from a memory to implement the method in the embodiment of the present application.

[0472] Optionally, as shown in FIG18 , the wireless communication device 900 may further include a memory 920. The processor 910 may call and execute a computer program from the memory 920 to implement the method in the embodiment of the present application. The memory 920 may be a separate device independent of the processor 910 or may be integrated into the processor 910.

[0473] Optionally, as shown in FIG18 , the wireless communication device 900 may further include a transceiver 930. The processor 910 may control the transceiver 930 to communicate with other devices. Specifically, the transceiver 930 may send information or data to other devices or receive information or data sent by other devices. The transceiver 930 may include a transmitter and a receiver. The transceiver 930 may further include one or more antennas.

[0474] Optionally, the wireless communication device 900 may specifically be a base station in an embodiment of the present application, and the wireless communication device 900 may implement the corresponding processes implemented by the base station in each method in the embodiment of the present application. For the sake of brevity, they will not be repeated here.

[0475] Optionally, the wireless communication device 900 may specifically be a mobile user device / user device in an embodiment of the present application, and the wireless communication device 900 may implement the corresponding processes implemented by the mobile user device / user device in each method of the embodiment of the present application. For the sake of brevity, they will not be repeated here.

[0476] Optionally, the wireless communication device 900 may specifically be a network element in an embodiment of the present application, and the wireless communication device 900 may implement the corresponding processes implemented by the network element in each method in the embodiment of the present application. For the sake of brevity, they will not be repeated here.

[0477] Figure 19 is a schematic structural diagram of a chip according to an embodiment of the present application. The chip 1000 shown in Figure 19 includes a processor 1010, which can call and run a computer program from a memory to implement the method according to the embodiment of the present application.

[0478] Optionally, as shown in FIG19 , the chip 1000 may further include a memory 1020. The processor 1010 may call and execute computer programs from the memory 1020 to implement the methods in the embodiments of the present application. The memory 1020 may be a separate device independent of the processor 1010 or may be integrated into the processor 1010.

[0479] Optionally, the chip 1000 may further include an input interface 1030. The processor 1010 may control the input interface 1030 to communicate with other devices or chips, and specifically, may obtain information or data sent by other devices or chips.

[0480] Optionally, the chip 1000 may further include an output interface 1040. The processor 1010 may control the output interface 1040 to communicate with other devices or chips, and specifically, may output information or data to other devices or chips.

[0481] Optionally, the chip can be applied to the base station in the embodiments of the present application, and the chip can implement the corresponding processes implemented by the base station in each method of the embodiments of the present application. For the sake of brevity, they will not be repeated here.

[0482] Optionally, the chip can be applied to the mobile user device / user device in the embodiments of the present application, and the chip can implement the corresponding processes implemented by the mobile user device / user device in the various methods of the embodiments of the present application. For the sake of brevity, they will not be repeated here.

[0483] Optionally, the chip can be applied to the network element in the embodiment of the present application, and the chip can implement the corresponding processes implemented by the mobile network element in each method of the embodiment of the present application. For the sake of brevity, it will not be repeated here.

[0484] Figure 20 is a schematic block diagram of a wireless communication system 2000 provided in an embodiment of the present application. As shown in Figure 20, the communication system 2000 includes a user equipment 2020 and a base station 2010. The user equipment 2020 can be used to implement the corresponding functions implemented by the user equipment in the above method, and the base station 2010 can be used to implement the corresponding functions implemented by the base station in the above method. For the sake of brevity, these functions are not further described here.

[0485] It should be understood that the processor of the embodiment of the present application may be an integrated circuit chip with signal processing capabilities. During implementation, each step of the above method embodiment may be completed by hardware integrated logic circuits in the processor or software instructions.

[0486] It is understood that the memory in the embodiments of the present application may be volatile memory or non-volatile memory, or may include both volatile and non-volatile memory. It should be noted that the memory of the systems and methods described herein is intended to include, but is not limited to, these and any other suitable types of memory. The embodiments of the present application also provide a computer-readable storage medium for storing a computer program.

[0487] Optionally, the computer-readable storage medium may be applied to the base station in the embodiments of the present application, and the computer program causes the computer to execute the corresponding processes implemented by the base station in the various methods in the embodiments of the present application. For the sake of brevity, no further description is given here. Optionally, the computer-readable storage medium may be applied to the mobile user equipment / user equipment in the embodiments of the present application, and the computer program causes the computer to execute the corresponding processes implemented by the mobile user equipment / user equipment in the various methods in the embodiments of the present application. For the sake of brevity, no further description is given here.

[0488] An embodiment of the present application also provides a computer program product, including computer program instructions.

[0489] Optionally, the computer program product may be applied to the base station in the embodiments of the present application, and the computer program instructions cause the computer to execute the corresponding processes implemented by the base station in the various methods of the embodiments of the present application. For the sake of brevity, they are not described in detail here. Optionally, the computer program product may be applied to the mobile user equipment / user equipment in the embodiments of the present application, and the computer program instructions cause the computer to execute the corresponding processes implemented by the mobile user equipment / user equipment in the various methods of the embodiments of the present application. For the sake of brevity, they are not described in detail here.

[0490] The embodiment of the present application also provides a computer program.

[0491] Optionally, the computer program may be applied to the base station in the embodiments of the present application. When the computer program is executed on a computer, the computer executes the corresponding processes implemented by the base station in the various methods of the embodiments of the present application. For the sake of brevity, no further details are given here. Optionally, the computer program may be applied to the mobile user equipment / user equipment in the embodiments of the present application. When the computer program is executed on a computer, the computer executes the corresponding processes implemented by the mobile user equipment / user equipment in the various methods of the embodiments of the present application. For the sake of brevity, no further details are given here.

[0492] Those skilled in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0493] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present application should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. A wireless communication method, which is executed by a first network node, wherein, The method includes: Sending a configuration message to a terminal device, where the configuration message includes conditional handover (CHO) related configuration information for a plurality of second time periods after a first time period, the first time period being the duration for which the first network node serves the terminal device, and the CHO related configuration information being used to instruct the terminal device to perform a conditional handover (CHO) to a second network node corresponding to each of the second time periods during each of the second time periods.

2. The method according to claim 1, wherein Before sending the configuration message to the terminal device, the method further includes: Receiving a CHO related message sent by each of a plurality of network nodes corresponding to each of the plurality of second time periods, where the configuration message is at least partially based on the CHO related messages.

3. The method according to claim 2, wherein, The CHO related message is a CHO request response message, and where, before receiving the CHO related message sent by each of the plurality of network nodes corresponding to each of the plurality of second time periods, the method further includes: Sending a CHO request message to each of the plurality of network nodes corresponding to each of the plurality of second time periods.

4. The method according to claim 3, wherein, The CHO request message is sent by the first network node in response to a CHO decision made by the first network node to perform the CHO.

5. The method according to claim 4, wherein The CHO decision is made by the first network node based on a measurement report message received by the first network node from the terminal device.

6. The method according to claim 3, wherein The CHO request message and / or the CHO request response message are relayed via a third network node.

7. The method according to claim 1, wherein, The configuration message is carried by dedicated signaling, broadcast signaling, or a combination of dedicated signaling and broadcast signaling.

8. The method according to any one of claims 2 to 6, wherein The CHO related configuration information includes a CHO configuration or a CHO index associated with the CHO configuration.

9. The method according to claim 8, wherein, The CHO configuration includes a CHO related configuration ID, a measurement related ID, and a container.

10. The method according to claim 9, wherein, Each of the plurality of second time periods is associated with a time related ID.

11. The method according to claim 10, wherein, The configuration message includes the CHO configuration and the time related ID.

12. The method according to claim 10, wherein, The CHO index is obtained by combining the CHO related configuration ID with the time related ID.

13. The method according to claim 10, wherein Each of the plurality of network nodes corresponding to each of the plurality of second time periods is assigned a unique ID, the unique ID being obtained by combining the time related ID with the CHO related configuration ID.

14. The method according to claim 13, wherein, The CHO configuration includes the unique ID, the measurement related ID, and the container.

15. The method according to claim 9, wherein The CHO related configuration ID indicates the second time period corresponding to each of the plurality of network nodes.

16. The method according to any one of claims 10 to 14, wherein The time related ID includes any one of an index, a reference time and an offset, or a mapping relationship.

17. The method according to claim 15, wherein, The configuration message further includes measurement related configuration information for each of the plurality of network nodes.

18. The method according to claim 17, wherein, The measurement related configuration information is provided by the first network node.

19. The method according to claim 14, wherein, The measurement related configuration is shared for the plurality of second network nodes.

20. The method according to claim 9, wherein The CHO configuration includes one or more container lists, each container list including a plurality of containers corresponding to the same measurement related ID.

21. The method according to claim 9 further includes obtaining configuration information of the same part from the container.

22. The method according to claim 21, wherein, The configuration information of the same part is informed to the first network node by at least one network node among the multiple network nodes.

23. The method according to claim 21, wherein The configuration information of the same part is obtained by the first network node through analysis of the received CHO-related message.

24. The method according to claim 22 or 23, wherein, Sending the configuration message to the terminal device includes: sending the configuration information of the same part to the terminal device, and configuration information of the remaining parts in the containers of each of the multiple network nodes except the configuration information of the same part.

25. The method according to claim 24, wherein The configuration information of the same part includes at least one of the following information elements (IEs): Spcellconfigcommon, NewUE-Identity, T304, RACH-configDedicated, or SMTC.

26. A wireless communication method, which is executed on a terminal device, wherein, The method includes: Receiving a configuration message from a first network node, where the configuration message includes conditional handover (CHO)-related configuration information for a plurality of second time periods after a first time period, the first time period being the duration for which the first network node serves the terminal device, and the CHO-related configuration information is used to instruct the terminal device to perform a conditional handover CHO to a second network node corresponding to each of the second time periods during each of the second time periods.

27. The method according to claim 26, wherein Before the terminal device receives the configuration message from the first network node, the first network node receives CHO-related messages sent by each of the multiple network nodes corresponding to the respective plurality of second time periods, where the configuration message received by the terminal device is at least partially based on the CHO-related messages.

28. The method according to claim 27, wherein The CHO-related message is a CHO request response message, and before the first network node receives the CHO-related messages sent by each of the multiple network nodes corresponding to the respective plurality of second time periods, the first network node sends a CHO request message to each of the multiple network nodes corresponding to the respective plurality of second time periods.

29. The method according to claim 28, wherein, The CHO request message is sent by the first network node in response to a CHO decision made by the first network node to perform the CHO.

30. The method according to claim 29, wherein, Before receiving the configuration message from the first network node, the method further includes sending a measurement report message to the first network node, and the CHO decision is made by the first network node based on the measurement report message received by the first network node from the terminal device.

31. The method according to claim 28, wherein, The CHO request message and / or the CHO request response message are transmitted via a third network node.

32. The method according to claim 26, wherein The configuration message is carried by dedicated signaling, broadcast signaling, or a combination of dedicated signaling and broadcast signaling.

33. The method according to any one of claims 27 to 31, wherein The CHO-related configuration information includes a CHO configuration or a CHO index associated with the CHO configuration.

34. The method according to claim 33, wherein The CHO configuration includes a CHO-related configuration ID, a measurement-related ID, and a container.

35. The method according to claim 34, wherein Each of the plurality of second time periods is associated with a time-related ID.

36. The method according to claim 35, wherein The configuration message includes the CHO configuration and the time-related ID.

37. The method according to claim 35, wherein The CHO index is obtained by combining the CHO-related configuration ID and the time-related ID.

38. The method according to claim 35, wherein Each of the plurality of network nodes corresponding to each of the plurality of second time periods is assigned a unique ID, which is obtained by combining the time-related ID and the CHO-related configuration ID.

39. The method according to claim 38, wherein, The CHO configuration includes the unique ID, the measurement-related ID, and the container.

40. The method according to claim 34, wherein, The CHO-related configuration ID indicates the second time period corresponding to each of the plurality of network nodes.

41. The method according to any one of claims 35 to 39, wherein, The time-related ID includes any one of an index, a reference time and an offset, or a mapping relationship.

42. The method according to claim 40, wherein The configuration message further includes measurement-related configuration information for each of the plurality of network nodes.

43. The method according to claim 42, wherein The measurement-related configuration information is provided by the first network node.

44. The method according to claim 39, wherein, The measurement-related configuration is shared among the plurality of second network nodes.

45. The method according to claim 34, wherein, The CHO configuration includes one or more container lists, and each container list includes a plurality of containers corresponding to the same measurement-related ID.

46. The method according to claim 34, wherein The container includes configuration information of the same part.

47. The method according to claim 44, wherein The configuration information of the same part is informed to the first network node by at least one network node among the plurality of network nodes.

48. The method according to claim 44, wherein The configuration information of the same part is analyzed by the first network node from the received CHO-related message.

49. The method according to claim 47 or 48, wherein, Receiving the configuration message from the first network node includes: receiving the configuration information of the same part from the first network node, and the configuration information of the remaining parts of the containers of each of the plurality of network nodes except the configuration information of the same part.

50. The method according to claim 49, wherein, The configuration information of the same part includes at least one of the following information elements IE: Spcellconfigcommon, NewUE-Identity, T304, RACH-configDedicated, or SMTC.

51. A wireless communication method, which is executed by a network node, wherein, The method includes: Sending a configuration message to a terminal device served by a network node acting as a serving node, the configuration message including conditional handover (CHO) related configuration information for a plurality of second time periods after a first time period during which the serving node serves the terminal device, and during any of the second time periods, one of the plurality of network nodes corresponding to the second time period acts as the serving node and serves the terminal device.

52. The method according to claim 51, wherein, The first time period includes a 0th first time period [T0, T1], and the plurality of second time periods after the 0th first time period are [T1, T2] to [Tm, Tm+1], where m≥2 and is an integer. Wherein, the first time period further includes an ith first time period, and the plurality of second time periods after the ith first time period are [T1+i*k, T2+i*k] to [Tm+i*k, Tm+1+i*k], where 1≤i≤N, 1≤k≤m-1, i and k are integers and N is a preset positive integer. Among them, the configuration message sent by the network node acting as the service node to the terminal device during the 0th time period [T0, T1] includes the CHO-related configuration information for the time periods [T1, T2] to [Tm, Tm+1], and among them, the configuration message sent by the network node acting as the service node to the terminal device during the i-th first time period includes the CHO-related configuration information for a total of k time periods counted forward from the time period [Tm + i*k, Tm+1 + i*k] among the multiple second time periods [T1 + i*k, T2 + i*k] to [Tm + i*k, Tm+1 + i*k] after the i-th first time period.

53. The method according to claim 51, wherein, The first time period includes the 0th first time period [T0, T1], and the multiple second time periods after the 0th first time period are [T1, T2] to [Tm, Tm+1], where m≥2 and is an integer, wherein, the first time period further includes the i-th first time period, and the multiple second time periods after the i-th first time period are [T1 + i*m, T2 + i*m] to [T(i+1)*m, T(i+1)*m+1], where 1≤i≤N, i is an integer and N is a preset positive integer, Among them, the configuration message sent by the network node acting as the service node to the terminal device during the 0th time period [T0, T1] includes the CHO-related configuration information for the time periods [T1, T2] to [Tm, Tm+1], and among them, the configuration message sent by the network node acting as the service node to the terminal device during the i-th first time period includes the CHO-related configuration information for the multiple second time periods [T1 + i*m, T2 + i*m] to [T(i+1)*m, T(i+1)*m+1] after the i-th first time period.

54. The method according to claim 52 or 53, wherein, The 0th first time period to the i-th first time period are arranged continuously in time.

55. The method according to claim 52, wherein, There is a time interval between at least two adjacent time periods among the 0th first time period to the i-th first time period, and the i-th first time period is before the time period [T1 + i*k, T2 + i*k].

56. The method according to claim 53, wherein There is a time interval between at least two adjacent time periods among the 0th first time period to the i-th first time period, and the i-th first time period is before the time period [T1 + i*m, T2 + i*m].

57. The method according to claim 51 or 53 or 54 or 56, wherein, Before sending the configuration message to the terminal device served by the network node acting as the service node, the method further includes: receiving the CHO-related messages sent by each of the multiple network nodes corresponding to each of the multiple second time periods; and sending the configuration message to the terminal device based on the CHO-related messages.

58. The method according to claim 57, wherein, The CHO-related message is a CHO request response message, and among them, before receiving the CHO-related messages sent by each of the multiple network nodes corresponding to each of the multiple second time periods, the method further includes: sending a CHO request message to each of the multiple network nodes corresponding to each of the multiple second time periods.

59. The method according to claim 58, wherein, The CHO request message is sent by the network node that acts as the serving node during the 0th first time period [T0, T1] in response to a CHO decision to perform CHO made by the network node.

60. The method according to claim 52 or 55, wherein, Before sending a configuration message to a terminal device served by a network node that acts as the serving node, the method further includes: receiving CHO-related messages sent by each of a plurality of network nodes corresponding to k time periods counted forward from the time period [Tm + i*k, Tm+1 + i*k] among the plurality of second time periods [T1 + i*k, T2 + i*k] to [Tm + i*k, Tm+1 + i*k] after the ith first time period; and sending the configuration message to the terminal device based on the CHO-related messages.

61. The method according to claim 60, wherein, The CHO-related message is a CHO request response message, and before receiving the CHO-related messages sent by each of a plurality of network nodes corresponding to k time periods counted forward from the time period [Tm + i*k, Tm+1 + i*k] among the plurality of second time periods [T1 + i*k, T2 + i*k] to [Tm + i*k, Tm+1 + i*k] after the ith first time period, the method further includes: sending a CHO request message to each of a plurality of network nodes corresponding to k time periods counted forward from the time period [Tm + i*k, Tm+1 + i*k] among the plurality of second time periods [T1 + i*k, T2 + i*k] to [Tm + i*k, Tm+1 + i*k] after the ith first time period.

62. The method according to claim 61, wherein, The CHO request message is sent by the network node that acts as the serving node during the 0th first time period [T0, T1] in response to a CHO decision to perform CHO made by the network node.

63. The method according to claim 59 or 62, wherein, The CHO decision is made based on a measurement report message sent by the terminal device and received by the network node that acts as the serving node during the 0th first time period [T0, T1].

64. A wireless communication method, which is executed on a terminal device, wherein, The method includes: receiving a configuration message from a network node that acts as a serving node, the configuration message including conditional handover (CHO)-related configuration information of a plurality of second time periods after a first time period during which the serving node serves the terminal device, and during any of the second time periods, one network node among the plurality of network nodes corresponding to the second time period acts as the serving node and serves the terminal device.

65. The method according to claim 64, wherein, The first time period includes the 0th first time period [T0, T1], and the plurality of second time periods after the 0th first time period are [T1, T2] to [Tm, Tm+1], where m≥2 and is an integer. wherein the first time period further includes the ith first time period, and the plurality of second time periods after the ith first time period are [T1 + i*k, T2 + i*k] to [Tm + i*k, Tm+1 + i*k], where 1≤i≤N, 1≤k≤m - 1, i and k are integers, and N is a preset positive integer. Among them, the configuration message received from the network node acting as the service node during the 0th time period [T0, T1] includes CHO-related configuration information for time periods [T1, T2] to [Tm, Tm+1], and among them, the configuration message received from the network node acting as the service node during the i-th first time period includes CHO-related configuration information for a total of k time periods counted forward from the time period [Tm + i*k, Tm+1 + i*k] among the multiple second time periods [T1 + i*k, T2 + i*k] to [Tm + i*k, Tm+1 + i*k] after the i-th first time period.

66. The method according to claim 64, wherein, The first time period includes the 0th first time period [T0, T1], and the multiple second time periods after the 0th first time period are [T1, T2] to [Tm, Tm+1], where m≥2 and is an integer, wherein the first time period further includes the i-th first time period, and the multiple second time periods after the i-th first time period are [T1 + i*m, T2 + i*m] to [T(i+1)*m, T(i+1)*m+1], where 1≤i≤N, i is an integer and N is a preset positive integer, Among them, the configuration message received from the network node acting as the service node during the 0th time period [T0, T1] includes CHO-related configuration information for time periods [T1, T2] to [Tm, Tm+1], and among them, the configuration message received from the network node acting as the service node during the i-th first time period includes CHO-related configuration information for the multiple second time periods [T1 + i*m, T2 + i*m] to [T(i+1)*m, T(i+1)*m+1] after the i-th first time period.

67. The method according to claim 65 or 66, wherein The 0th first time period to the i-th first time period are arranged continuously in time.

68. The method according to claim 65, wherein, There is a time interval between at least two adjacent time periods among the 0th first time period to the i-th first time period, and the i-th first time period is before the time period [T1 + i*k, T2 + i*k].

69. The method according to claim 66, wherein There is a time interval between at least two adjacent time periods among the 0th first time period to the i-th first time period, and the i-th first time period is before the time period [T1 + i*m, T2 + i*m].

70. The method according to claim 64 or 66 or 67 or 69, wherein, Before the terminal device receives the configuration message from the network node acting as the service node, the network node receives CHO-related messages sent by each of the multiple network nodes corresponding to each of the multiple second time periods, and the configuration message is at least partially based on the CHO-related messages.

71. The method according to claim 70, wherein, The CHO-related message is a CHO request response message, and among them, before the network node receives the CHO-related messages sent by each of the multiple network nodes corresponding to each of the multiple second time periods, the network node sends a CHO request message to each of the multiple network nodes corresponding to each of the multiple second time periods.

72. The method according to claim 71, wherein The CHO request message is sent by the network node acting as the serving node during the 0th first time period [T0, T1] in response to a CHO decision to perform CHO.

73. The method according to claim 65 or 68, wherein, Before the terminal device receives the configuration message from the network node acting as the serving node, the network node receives CHO-related messages sent by each of the multiple network nodes corresponding to each of the k time periods counted forward from the time period [Tm + i*k, Tm+1 + i*k] among the multiple second time periods [T1 + i*k, T2 + i*k] to [Tm + i*k, Tm+1 + i*k] after the ith first time period, and the configuration message is at least partially based on the CHO-related messages.

74. The method according to claim 73, wherein, The CHO-related message is a CHO request response message, and before the network node receives the CHO-related messages sent by each of the multiple network nodes corresponding to each of the k time periods counted forward from the time period [Tm + i*k, Tm+1 + i*k] among the multiple second time periods [T1 + i*k, T2 + i*k] to [Tm + i*k, Tm+1 + i*k] after the ith first time period, the network node sends a CHO request message to each of the multiple network nodes corresponding to each of the k time periods counted forward from the time period [Tm + i*k, Tm+1 + i*k] among the multiple second time periods [T1 + i*k, T2 + i*k] to [Tm + i*k, Tm+1 + i*k] after the ith first time period.

75. The method according to claim 74, wherein, The CHO request message is sent by the network node acting as the serving node during the 0th first time period [T0, T1] in response to a CHO decision to perform CHO.

76. The method according to claim 72 or 75, wherein, The CHO decision is made based on the measurement report message sent by the terminal device and received by the network node acting as the serving node during the 0th first time period [T0, T1].

77. A wireless communication method is executed on a first relay device, where, The method includes: Sending a configuration message to a terminal device, where the configuration message includes relay device handover-related configuration information for multiple second time periods after a first time period, the first time period being the duration during which the first relay device relays the communication between the terminal device and the network node, and the relay device handover-related configuration information is used to instruct the terminal device to perform a handover to the relay device corresponding to each of the second time periods during each of the second time periods.

78. The method according to claim 77, wherein The configuration message is carried by dedicated signaling, broadcast signaling, or a combination of dedicated signaling and broadcast signaling.

79. The method according to claim 77 or 78, wherein, The configuration message includes the relay device handover-related configuration information and a time-related ID.

80. The method according to claim 77 or 78, wherein, The relay device handover-related configuration information includes at least one of the following information elements IE: TA-related parameters, K_mac, ephemeris of candidate cells, cell-specific K offset, SSB information of candidate cells.

81. A wireless communication method, which is executed on a terminal device, wherein, The method includes: Receive a configuration message from a first relay device, where the configuration message includes relay device handover related configuration information for a plurality of second time periods after a first time period, the first time period being the duration for which the first relay device relays the communication between the terminal device and the network node, and the relay device handover related configuration information being used to instruct the terminal device to perform a handover to the relay device corresponding to each second time period during each second time period.

82. The method according to claim 81, wherein, The configuration message is carried by dedicated signaling, broadcast signaling, or a combination of dedicated signaling and broadcast signaling.

83. The method according to claim 81 or 82, wherein, The configuration message includes the relay device handover related configuration information and a time related ID.

84. The method according to claim 81 or 82, wherein, The relay device handover related configuration information includes at least one of the following information elements IE: TA related parameters, K_mac, ephemeris of a candidate cell, cell specific K offset, SSB information of a candidate cell.

85. A wireless communication method is executed on a relay device, where, The method includes: Send a configuration message to a terminal device served by a relay device acting as a serving relay device, the configuration message including relay device handover related configuration information for a plurality of second time periods after a first time period during which the serving relay device serves the terminal device, and during any of the second time periods, one of the plurality of relay devices corresponding to the second time period acts as the serving relay device and serves the terminal device.

86. The method according to claim 85, wherein, The first time period includes a 0th first time period [T0, T1], and the plurality of second time periods after the 0th first time period are [T1, T2] to [Tm, Tm+1], where m≥2 and is an integer. Wherein, the first time period further includes an ith first time period, and the plurality of second time periods after the ith first time period are [T1 + i*k, T2 + i*k] to [Tm + i*k, Tm+1 + i*k], where 1≤i≤N, 1≤k≤m-1, i and k are integers and N is a preset positive integer. Wherein, the configuration message sent by the relay device acting as the serving relay device to the terminal device during the 0th time period [T0, T1] includes relay device handover related configuration information for the time periods [T1, T2] to [Tm, Tm+1]. And wherein, the configuration message sent by the relay device acting as the serving relay device to the terminal device during the ith first time period includes relay device handover related configuration information for a total of k time periods counted forward from the time period [Tm + i*k, Tm+1 + i*k] among the plurality of second time periods [T1 + i*k, T2 + i*k] to [Tm + i*k, Tm+1 + i*k] after the ith first time period.

87. The method according to claim 85, wherein, The first time period includes a 0th first time period [T0, T1], and the plurality of second time periods after the 0th first time period are [T1, T2] to [Tm, Tm+1], where m≥2 and is an integer. Among them, the first time period further includes the i-th first time period, and the multiple second time periods after the i-th first time period are from [T1 + i*m, T2 + i*m] to [T(i+1)*m, T(i+1)*m + 1], where 1 ≤ i ≤ N, i is an integer and N is a preset positive integer. Among them, the configuration message sent by the relay device acting as the service relay device to the terminal device during the 0-th time period [T0, T1] includes the relay device handover related configuration information for the time periods from [T1, T2] to [Tm, Tm + 1]. And among them, the configuration message sent by the relay device acting as the service relay device to the terminal device during the i-th first time period includes the relay device handover related configuration information for the multiple second time periods from [T1 + i*m, T2 + i*m] to [T(i+1)*m, T(i+1)*m + 1] after the i-th first time period.

88. The method according to claim 86 or 87, wherein, The 0-th first time period to the i-th first time period are arranged continuously in time.

89. The method according to claim 86, wherein, There is a time interval between at least two adjacent time periods among the 0-th first time period to the i-th first time period, and the i-th first time period is before the time period [T1 + i*k, T2 + i*k].

90. The method according to claim 87, wherein There is a time interval between at least two adjacent time periods among the 0-th first time period to the i-th first time period, and the i-th first time period is before the time period [T1 + i*m, T2 + i*m].

91. The method according to claim 85, wherein, The configuration message is carried by dedicated signaling, broadcast signaling, or a combination of dedicated signaling and broadcast signaling.

92. The method according to claim 85, wherein The configuration message includes the relay device handover related configuration information and a time related ID.

93. The method according to claim 92, wherein The relay device handover related configuration information includes at least one of the following information elements: TA related parameters, K_mac, ephemeris of the candidate cell, cell specific K offset, SSB information of the candidate cell.

94. A wireless communication method, which is executed on a terminal device, wherein, The method includes: Receiving a configuration message from a relay device acting as a service relay device, the configuration message includes the relay device handover related configuration information for multiple second time periods after the first time period when the service relay device serves the terminal device. During any of the second time periods, one of the multiple relay devices corresponding to the second time period acts as the service relay device and serves the terminal device.

95. The method according to claim 94, wherein, The first time period includes the 0-th first time period [T0, T1], and the multiple second time periods after the 0-th first time period are from [T1, T2] to [Tm, Tm + 1], where m ≥ 2 and is an integer. Among them, the first time period further includes the i-th first time period, and the multiple second time periods after the i-th first time period are from [T1 + i*k, T2 + i*k] to [Tm + i*k, Tm + 1 + i*k], where 1 ≤ i ≤ N, 1 ≤ k ≤ m - 1, i, k are integers and N is a preset positive integer. Among them, the configuration message received from the relay device acting as the service relay device during the 0th time period [T0, T1] includes relay device handover-related configuration information for time periods [T1, T2] to [Tm, Tm+1]. And among them, the configuration message received from the relay device acting as the service relay device during the i-th first time period includes relay device handover-related configuration information for a total of k time periods counted forward from the time period [Tm + i*k, Tm+1 + i*k] among the multiple second time periods [T1 + i*k, T2 + i*k] to [Tm + i*k, Tm+1 + i*k] after the i-th first time period.

96. The method according to claim 94, wherein, The first time period includes the 0th first time period [T0, T1], and the multiple second time periods after the 0th first time period are [T1, T2] to [Tm, Tm+1], where m≥2 and is an integer. Among them, the first time period further includes the i-th first time period, and the multiple second time periods after the i-th first time period are [T1 + i*m, T2 + i*m] to [T(i+1)*m, T(i+1)*m+1], where 1≤i≤N, i is an integer and N is a preset positive integer. Among them, the configuration message received from the relay device acting as the service relay device during the 0th time period [T0, T1] includes relay device handover-related configuration information for time periods [T1, T2] to [Tm, Tm+1]. And among them, the configuration message received from the relay device acting as the service relay device during the i-th first time period includes relay device handover-related configuration information for the multiple second time periods [T1 + i*m, T2 + i*m] to [T(i+1)*m, T(i+1)*m+1] after the i-th first time period.

97. The method according to claim 95 or 96, wherein, The 0th first time period to the i-th first time period are arranged continuously in time.

98. The method according to claim 95, wherein There is a time interval between at least two adjacent time periods among the 0th first time period to the i-th first time period, and the i-th first time period is before the time period [T1 + i*k, T2 + i*k].

99. The method according to claim 96, wherein, There is a time interval between at least two adjacent time periods among the 0th first time period to the i-th first time period, and the i-th first time period is before the time period [T1 + i*m, T2 + i*m].

100. The method according to claim 94, wherein, The configuration message is carried by dedicated signaling, broadcast signaling, or a combination of dedicated signaling and broadcast signaling.

101. The method according to claim 94, wherein, The configuration message includes the relay device handover-related configuration information and a time-related ID.

102. The method according to claim 101, wherein, The relay device handover-related configuration information includes at least one of the following information elements: TA-related parameters, K_mac, ephemeris of the candidate cell, cell-specific K offset, SSB information of the candidate cell.

103. A first network node, comprising: A processor configured to execute the wireless communication method according to any one of claims 1-25.

104. A terminal device, comprising: A processor configured to execute the wireless communication method according to any one of claims 26 - 50.

105. A set of network nodes, the set of network nodes including a plurality of network nodes, and comprising: A processor configured to execute the wireless communication method according to any one of claims 51 - 63.

106. A terminal device, comprising: A processor configured to execute the wireless communication method according to any one of claims 64 - 76.

107. A first relay device, comprising: A processor configured to execute the wireless communication method according to any one of claims 77 - 80.

108. A terminal device, comprising: A processor configured to execute the wireless communication method according to any one of claims 81 - 84.

109. A set of relay devices, the set of relay devices including a plurality of relay devices, and comprising: A processor configured to execute the wireless communication method according to any one of claims 85 - 93.

110. A terminal device, comprising: A processor configured to execute the wireless communication method according to any one of claims 94 - 102.

111. A chip, comprising: A processor configured to call and run a computer program stored in a memory so that a device in which the chip is installed executes the method according to any one of claims 1 - 102.

112. A computer-readable storage medium storing a computer program, wherein the computer program causes a computer to execute the method according to any one of claims 1 - 102.

113. A computer program product comprising a computer program, wherein the computer program causes a computer to execute the method according to any one of claims 1 - 102.

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