Handover method and communication apparatus

Abstract

Provided in the present application are a handover method and a communication apparatus, which can improve the efficiency and success rate of handover. The method comprises: a terminal device acquiring first measurement configuration information and second measurement configuration information, and then performing measurement on a first-type downlink reference signal according to first location information and the first measurement configuration information, and / or performing measurement on a second-type downlink reference signal according to second location information and the second measurement configuration information, so as to obtain a measurement result; and according to the measurement result, determining whether to perform cell handover.

Description

Switching method and communication device

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to the Chinese patent application filed with the State Intellectual Property Office of China on July 14, 2023, with application number 202310872089.X and application name “A switching method and communication device”, the entire contents of which are incorporated by reference into this application. Technical Field

[0003] The present application relates to the field of communication technology, and in particular to a switching method and a communication device. Background Art

[0004] With the development of satellite networks, they are generally becoming increasingly dense and heterogeneous. The scale of satellite networks has grown from 66 satellites in the Iridium constellation to 720 in the OneWeb constellation, and ultimately to the Starlink ultra-dense low-Earth orbit (LEO) satellite constellation of over 12,000. Furthermore, satellite networks are becoming heterogeneous, evolving from traditional single-layer communications networks to multi-layer ones. The functionality of communication satellite networks is also becoming increasingly complex and diverse, gradually becoming compatible with and supporting capabilities such as navigation augmentation, Earth observation, and multi-dimensional on-orbit information processing.

[0005] In a beam-hopping satellite system, satellites use beam hopping to provide regional coverage in a time-sharing manner. Satellite movement can trigger group handoffs for devices within a given area (i.e., multiple devices within the area initiate handoffs almost simultaneously). Existing cell handoff designs target handoffs triggered by device movement and are not suitable for group handoffs caused by satellite movement.

[0006] Summary of the Invention

[0007] The present application provides a switching method and a communication device, which can improve the switching / reselection efficiency and success rate by designing multiple measurement configurations for cell switching to adapt to group switching caused by satellite movement or switching or reselection triggered by terminal device movement.

[0008] In the first aspect, an embodiment of the present application provides a switching method, which can be executed by a terminal device. The terminal device here can refer to the terminal device itself, or a processor, module, chip, or chip system that implements the method in the terminal device. The method includes: the terminal device obtains first measurement configuration information and second measurement configuration information, and measures the first type of downlink reference signal based on the first location information and the first measurement configuration information; and / or measures the second type of downlink reference signal based on the second location information and the second measurement configuration information to obtain a measurement result; wherein the first measurement configuration information is used to configure the transmission resources of the first type of downlink reference signal, the second measurement configuration information is used to configure the transmission resources of the second type of downlink reference signal, and the first type of downlink reference signal and the second type of downlink reference signal are used for cell switching; furthermore, the terminal device can determine whether to perform cell switching based on the measurement results. In the above design, the terminal device measures multiple types of downlink reference signals based on multiple measurement configurations, and flexibly and quickly determines whether to perform cell switching.

[0009] In one possible design, the first type of downlink reference signal is used for cell handovers triggered by network device motion, and the second type of downlink reference signal is used for cell handovers triggered by terminal devices. This design considers the handover of a group of terminal devices caused by the motion of network devices (e.g., satellites) and configures a measurement configuration specifically for downlink reference signals used for cell handovers, thereby improving handover efficiency and success rate.

[0010] In one possible design, the terminal device may measure the first type of downlink reference signal from the target network device according to the measurement time corresponding to the first location information in the first measurement configuration information. For example, the first location information may refer to the wave position where the terminal device is located. That is, it can be understood that in this design, the network device may separately configure corresponding measurement times for different wave positions to reduce measurement interference between wave positions and improve the accuracy of the measurement results.

[0011] In one possible design, the first measurement configuration information is used to configure multiple transmission resources for a first-type downlink reference signal, where at least two of the multiple transmission resources for the first-type downlink reference signal have different activation times. Based on this design, the terminal device can measure the first-type downlink reference signal on the multiple transmission resources in a time-sharing manner.

[0012] Exemplarily, the multiple transmission resources of the first type of downlink reference signal include a first transmission resource corresponding to the first cell group, and a second transmission resource corresponding to the second cell group. The terminal device can measure the first type of downlink reference signal from the first cell group according to the measurement time corresponding to the first location information in the first transmission resource during the activation time of the first transmission resource; or, the terminal device can measure the first type of downlink reference signal from the second cell group according to the measurement time corresponding to the first location information in the second transmission resource during the activation time of the second transmission resource. Such a design can be applied to scenarios where the terminal device cyclically switches between the first cell group and the second cell group. Only one measurement configuration is required, which can simplify the measurement configuration process and mobility management and improve switching efficiency.

[0013] In one possible design, the first measurement configuration information is used to configure a first signal quality threshold, which is determined based on the L1 / L2 mobility management configuration of the terminal device. If the signal quality of the first downlink reference signal included in the measurement result is greater than or equal to the first signal quality threshold, the terminal device may determine to perform cell handover. Such a design, applied in L1 / L2 mobility management scenarios, can reduce communication interruption time caused by satellite motion.

[0014] In one possible design, the terminal device may measure the second type of downlink reference signal according to the second measurement configuration information when the distance between the second location information and the first reference location in the serving cell is greater than a first threshold; and / or the terminal device may measure the second type of downlink reference signal according to the second measurement configuration information when the distance between the second location information and the second reference location in the neighboring cell is less than a second threshold. Based on this design, the terminal device can quickly determine whether to perform a cell handover caused by its own mobility, thereby improving handover efficiency.

[0015] In one possible design, the second measurement configuration information is further used to configure one or more of the following: a first reference position, a first threshold, a second reference position, and a second threshold.

[0016] In one possible design, a transmission resource of a first-type downlink reference signal includes one or more of the following: a time domain resource corresponding to the first-type downlink reference signal, a transmission period of the first-type downlink reference signal, a sequence corresponding to the first-type downlink reference signal, a polarization mode corresponding to the first-type downlink reference signal, a frequency domain resource corresponding to the first-type downlink reference signal, a beam identifier corresponding to the first-type downlink reference signal, a receiving window corresponding to the first-type downlink reference signal, and a receiving window offset corresponding to the first-type downlink reference signal. Such a design can assist terminal devices in performing signal measurements during cell switching and improve switching efficiency.

[0017] In one possible design, the first measurement configuration information is used to configure a first access resource associated with a first type of downlink reference signal, where the first access resource is different from a second access resource associated with a second type of downlink reference signal. By designing access resources for terminal device group handovers triggered by network device motion, the success rate of terminal device group handovers can be improved.

[0018] In a second aspect, an embodiment of the present application provides a handover method, which can be performed by a network device. The network device herein can refer to the network device itself or a processor, module, chip, or chip system that implements the method in the network device. The method includes: the network device determining first measurement configuration information and second measurement configuration information; and sending the first measurement configuration information and the second measurement configuration information. The first measurement configuration information is used to configure transmission resources for a first type of downlink reference signal, and the second measurement configuration information is used to configure transmission resources for a second type of downlink reference signal. The first type of downlink reference signal and the second type of downlink reference signal are used for cell handover.

[0019] In one possible design, the first type of downlink reference signal is used for cell switching triggered by network device movement, and the second type of downlink reference signal is used for cell switching triggered by terminal equipment.

[0020] In one possible design, the first measurement configuration information includes a measurement time corresponding to the first location information.

[0021] In one possible design, the first measurement configuration information is used to configure multiple transmission resources of a first type of downlink reference signal, and activation times of at least two of the multiple transmission resources of the first type of downlink reference signal are different.

[0022] In one possible design, the multiple transmission resources of the first type of downlink reference signal include a first transmission resource corresponding to the first cell group, and a second transmission resource corresponding to the second cell group; wherein the first transmission resource is different from the second transmission resource; the first transmission resource includes the measurement time corresponding to the first position information, and the second transmission resource includes the measurement time corresponding to the first position information.

[0023] In one possible design, the first measurement configuration information is used to configure a first signal quality threshold, which is determined based on the L1 / L2 mobility management configuration of the terminal device. The first signal quality threshold is used by the terminal device to determine whether to perform cell switching.

[0024] In one possible design, the second measurement configuration information is used to configure one or more of the following parameters: a first reference position in the serving cell, a first threshold, a second reference position in the neighboring cell, and a second threshold; wherein, the one or more parameters configured by the second measurement configuration information are used by the terminal device to determine whether to perform measurement of the second type of downlink reference signal.

[0025] In one possible design, a transmission resource of a first type of downlink reference signal includes one or more of the following: a time domain resource corresponding to the first type of downlink reference signal, a transmission period of the first type of downlink reference signal, a sequence corresponding to the first type of downlink reference signal, a polarization mode corresponding to the first type of downlink reference signal, a frequency domain resource corresponding to the first type of downlink reference signal, a beam identifier corresponding to the first type of downlink reference signal, a receiving window corresponding to the first type of downlink reference signal, and a receiving window offset corresponding to the first type of downlink reference signal.

[0026] In one possible design, the first measurement configuration information is used to configure a first access resource associated with a first type of downlink reference signal, where the first access resource is different from a second access resource associated with a second type of downlink reference signal.

[0027] In a third aspect, an embodiment of the present application provides a communication device, which may be a terminal device, or a device, module, or chip in a terminal device, or a device that can be used in conjunction with a terminal device. In one design, the communication device may include a module that performs the method / operation / step / action described in the first aspect, and the module may be a hardware circuit, software, or a combination of hardware circuit and software. In one design, the communication device may include a processing module and a communication module.

[0028] A communication module is used to obtain first measurement configuration information and second measurement configuration information; wherein the first measurement configuration information is used to configure the transmission resources of the first type of downlink reference signal, the second measurement configuration information is used to configure the transmission resources of the second type of downlink reference signal, and the first type of downlink reference signal and the second type of downlink reference signal are used for cell switching; a processing module is used to measure the first type of downlink reference signal according to the first location information and the first measurement configuration information; and / or, measure the second type of downlink reference signal according to the second location information and the second measurement configuration information to obtain measurement results; and determine whether to perform cell switching based on the measurement results.

[0029] In one possible design, the first type of downlink reference signal is used for cell switching triggered by network device movement, and the second type of downlink reference signal is used for cell switching triggered by terminal equipment.

[0030] In one possible design, the processing module is specifically used to measure the first type of downlink reference signal from the target network device according to the measurement time corresponding to the first location information in the first measurement configuration information.

[0031] In one possible design, the first measurement configuration information is used to configure multiple transmission resources of a first type of downlink reference signal, and activation times of at least two of the multiple transmission resources of the first type of downlink reference signal are different.

[0032] In one possible design, the multiple transmission resources of the first type of downlink reference signal include a first transmission resource corresponding to the first cell group and a second transmission resource corresponding to the second cell group. The processing module is specifically used to: within the activation time of the first transmission resource, measure the first type of downlink reference signal from the first cell group according to the measurement time corresponding to the first position information in the first transmission resource; or, within the activation time of the second transmission resource, measure the first type of downlink reference signal from the second cell group according to the measurement time corresponding to the first position information in the second transmission resource.

[0033] In one possible design, the first measurement configuration information is used to configure a first signal quality threshold, which is determined based on the L1 / L2 mobility management configuration of the terminal device; the processing module is specifically used to: if the signal quality of the first downlink reference signal included in the measurement result is greater than or equal to the first signal quality threshold, determine to perform cell switching.

[0034] In one possible design, the processing module, when measuring the second type of downlink reference signal based on the second position information and the second measurement configuration information, is specifically used to: when the distance between the second position information and the first reference position in the serving cell is greater than the first threshold, measure the second type of downlink reference signal according to the second measurement configuration information; and / or, when the distance between the second position information and the second reference position in the neighboring cell is less than the second threshold, measure the second type of downlink reference signal according to the second measurement configuration information.

[0035] In one possible design, the second measurement configuration information is further used to configure one or more of the following: a first reference position, a first threshold, a second reference position, and a second threshold.

[0036] In one possible design, a transmission resource of a first type of downlink reference signal includes one or more of the following: a time domain resource corresponding to the first type of downlink reference signal, a transmission period of the first type of downlink reference signal, a sequence corresponding to the first type of downlink reference signal, a polarization mode corresponding to the first type of downlink reference signal, a frequency domain resource corresponding to the first type of downlink reference signal, a beam identifier corresponding to the first type of downlink reference signal, a receiving window corresponding to the first type of downlink reference signal, and a receiving window offset corresponding to the first type of downlink reference signal.

[0037] In one possible design, the first measurement configuration information is used to configure a first access resource associated with a first type of downlink reference signal, where the first access resource is different from a second access resource associated with a second type of downlink reference signal.

[0038] In a fourth aspect, an embodiment of the present application provides a communication device, which may be a network device, or a device, module, or chip in a network device, or a device that can be used in conjunction with a network device. In one design, the communication device may include a module that performs the method / operation / step / action described in the second aspect, and the module may be a hardware circuit, software, or a combination of hardware circuit and software. In one design, the communication device may include a processing module and a communication module.

[0039] A processing module is configured to determine first measurement configuration information and second measurement configuration information; and a communication module is configured to send the first measurement configuration information and the second measurement configuration information. The first measurement configuration information is used to configure transmission resources for a first type of downlink reference signal, and the second measurement configuration information is used to configure transmission resources for a second type of downlink reference signal. The first type of downlink reference signal and the second type of downlink reference signal are used for cell handover.

[0040] In one possible design, the first type of downlink reference signal is used for cell switching triggered by network device movement, and the second type of downlink reference signal is used for cell switching triggered by terminal equipment.

[0041] In one possible design, the first measurement configuration information includes a measurement time corresponding to the first location information.

[0042] In one possible design, the first measurement configuration information is used to configure multiple transmission resources of a first type of downlink reference signal, and activation times of at least two of the multiple transmission resources of the first type of downlink reference signal are different.

[0043] In one possible design, the multiple transmission resources of the first type of downlink reference signal include a first transmission resource corresponding to the first cell group, and a second transmission resource corresponding to the second cell group; wherein the first transmission resource is different from the second transmission resource; the first transmission resource includes the measurement time corresponding to the first position information, and the second transmission resource includes the measurement time corresponding to the first position information.

[0044] In one possible design, the first measurement configuration information is used to configure a first signal quality threshold, which is determined based on the L1 / L2 mobility management configuration of the terminal device. The first signal quality threshold is used by the terminal device to determine whether to perform cell switching.

[0045] In one possible design, the second measurement configuration information is used to configure one or more of the following parameters: a first reference position in the serving cell, a first threshold, a second reference position in the neighboring cell, and a second threshold; wherein, the one or more parameters configured by the second measurement configuration information are used by the terminal device to determine whether to perform measurement of the second type of downlink reference signal.

[0046] In one possible design, a transmission resource of a first type of downlink reference signal includes one or more of the following: a time domain resource corresponding to the first type of downlink reference signal, a transmission period of the first type of downlink reference signal, a sequence corresponding to the first type of downlink reference signal, a polarization mode corresponding to the first type of downlink reference signal, a frequency domain resource corresponding to the first type of downlink reference signal, a beam identifier corresponding to the first type of downlink reference signal, a receiving window corresponding to the first type of downlink reference signal, and a receiving window offset corresponding to the first type of downlink reference signal.

[0047] In one possible design, the first measurement configuration information is used to configure a first access resource associated with a first type of downlink reference signal, where the first access resource is different from a second access resource associated with a second type of downlink reference signal.

[0048] In a fifth aspect, embodiments of the present application provide a communication device, comprising a processor configured to implement the method described in the first aspect above. The processor is coupled to a memory configured to store instructions and data. When the processor executes the instructions stored in the memory, the method described in the first aspect above can be implemented. Optionally, the communication device may further comprise a memory; the communication device may further comprise a communication interface configured to enable the device to communicate with other devices. Exemplarily, the communication interface may be a transceiver, circuit, bus, module, pin, or other type of communication interface.

[0049] In one possible device, the communication device includes:

[0050] a memory for storing instructions;

[0051] a communication interface, configured to obtain first measurement configuration information and second measurement configuration information; wherein the first measurement configuration information is used to configure transmission resources for a first type of downlink reference signal, and the second measurement configuration information is used to configure transmission resources for a second type of downlink reference signal, and the first type of downlink reference signal and the second type of downlink reference signal are used for cell handover;

[0052] The processor is configured to measure a first type of downlink reference signal based on first location information and first measurement configuration information; and / or measure a second type of downlink reference signal based on second location information and second measurement configuration information to obtain a measurement result; and determine whether to perform cell switching based on the measurement result.

[0053] In a sixth aspect, embodiments of the present application provide a communication device, comprising a processor configured to implement the method described in the second aspect above. The processor is coupled to a memory configured to store instructions and data. When the processor executes the instructions stored in the memory, the method described in the second aspect above can be implemented. Optionally, the communication device may further comprise a memory; the communication device may further comprise a communication interface configured to enable the device to communicate with other devices. Exemplarily, the communication interface may be a transceiver, circuit, bus, module, pin, or other type of communication interface.

[0054] In one possible device, the communication device includes:

[0055] a memory for storing instructions;

[0056] a processor, configured to determine first measurement configuration information and second measurement configuration information; wherein the first measurement configuration information is used to configure transmission resources for a first type of downlink reference signal, the second measurement configuration information is used to configure transmission resources for a second type of downlink reference signal, and the first type of downlink reference signal and the second type of downlink reference signal are used for cell handover;

[0057] The communication interface is configured to send the first measurement configuration information and the second measurement configuration information.

[0058] In a seventh aspect, the present disclosure provides a communication system, comprising the communication device as described in the third aspect or the fifth aspect; and the communication device as described in the fourth aspect or the sixth aspect.

[0059] In an eighth aspect, the present disclosure further provides a computer program, which, when executed on a computer, enables the computer to execute the method provided in any one of the first to second aspects above.

[0060] In a ninth aspect, the present disclosure further provides a computer program product, comprising instructions, which, when executed on a computer, enable the computer to execute the method provided in any one of the first to second aspects above.

[0061] In the tenth aspect, the present disclosure also provides a computer-readable storage medium, in which a computer program or instruction is stored. When the computer program or instruction is run on a computer, the computer executes the method provided in any one of the first to second aspects above.

[0062] In the eleventh aspect, the present disclosure also provides a chip, which is used to read a computer program stored in a memory and execute the method provided in any one of the first to second aspects above, or the chip includes a circuit for executing the method provided in any one of the first to second aspects above.

[0063] In a twelfth aspect, the present disclosure further provides a chip system, comprising a processor configured to support a device in implementing the method provided in any of the first and second aspects above. In one possible design, the chip system further comprises a memory configured to store programs and data necessary for the device. The chip system may be comprised solely of a chip, or may include a chip and other discrete components.

[0064] For the effects of the solutions provided in any of the second to twelfth aspects above, reference can be made to the corresponding description in the first aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0065] FIG1 is a schematic diagram of the architecture of a land network communication system according to an embodiment of the present application;

[0066] FIG2 is a schematic diagram of the NTN communication system architecture in an embodiment of the present application;

[0067] FIG3 is a schematic diagram of a 5G satellite communication system architecture according to an embodiment of the present application;

[0068] FIG4 is a schematic diagram of the satellite communication system architecture according to an embodiment of the present application;

[0069] FIG5 is a schematic diagram of a beam hopping communication process in an embodiment of the present application;

[0070] FIG6 is a schematic diagram of a group switching of a beam-hopping communication transmitting terminal device in an embodiment of the present application;

[0071] FIG7 is a schematic diagram of a flow chart of a switching method provided in an embodiment of the present application;

[0072] FIG8 is a schematic diagram of a scenario of group handover triggered by satellite motion;

[0073] FIG9 is a schematic diagram of a scenario of group handover triggered by satellite motion;

[0074] FIG10 is a schematic diagram of a structure of a communication device according to an embodiment of the present application;

[0075] FIG11 is one of the structural diagrams of the communication device in the embodiment of the present application. DETAILED DESCRIPTION

[0076] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the embodiments of the present application will be further described in detail below with reference to the accompanying drawings.

[0077] The at least one (item) involved in the embodiments of the present application as follows indicates one (item) or more (items). More (items) refers to two (items) or more than two (items). "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the previous and next associated objects are in an "or" relationship. In addition, it should be understood that although the terms first, second, etc. may be used to describe each object in the embodiments of the present application, these objects should not be limited to these terms. These terms are only used to distinguish each object from each other.

[0078] The terms "including" and "having" and any variations thereof mentioned in the following description of the embodiments of the present application are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but optionally includes other steps or units that are not listed, or optionally includes other steps or units that are inherent to these processes, methods, products or devices. It should be noted that, in the embodiments of the present application, words such as "exemplary" or "for example" are used to indicate examples, illustrations or descriptions. Any method or design described as "exemplary" or "for example" in the embodiments of the present application should not be interpreted as being more preferred or more advantageous than other methods or designs. Specifically, the use of words such as "exemplary" or "for example" is intended to present related concepts in a concrete way.

[0079] The technology provided in the embodiments of the present application can be applied to various communication systems, such as satellite communication systems, high altitude platform station (HAPS) communication systems, drones and other non-terrestrial network (NTN) systems; for example, integrated communication and navigation (IcaN) systems, global navigation satellite systems (GNSS) and ultra-dense low-orbit satellite communication systems. The communication system applied in the embodiments of the present application can be integrated with the ground communication system. For example, the ground communication system can be a fourth generation (4G) communication system (for example, long term evolution (LTE) system), a world-wide interoperability for microwave access (WiMAX) communication system, a fifth generation (5G) communication system (for example, a new radio (NR) system), and future mobile communication systems such as a 6G communication system.

[0080] A network element in a communication system can send signals to or receive signals from another network element. The signals may include information, signaling, or data. A network element may also be replaced by an entity, network entity, device, communication device, communication module, node, communication node, etc. The embodiments of this application use a network element as an example for description.

[0081] For example, a terrestrial communication system may include at least one terminal device and at least one network device. The network device may send downlink signals to the terminal device, and / or the terminal device may send uplink signals to the network device. Furthermore, it is understood that if a communication system includes multiple terminal devices, the multiple terminal devices may also send signals to each other, i.e., both the signal-transmitting network element and the signal-receiving network element may be terminal devices.

[0082] Figure 1 shows the architecture of a mobile communication system. Communication system 100 may include network device 110 and terminal devices 101-106. It should be understood that communication system 100 may include more or fewer network devices or terminal devices. Network devices or terminal devices may be hardware, functionally divided software, or a combination of the two. Furthermore, terminal devices 104-106 may also form a communication system. For example, terminal device 105 may send downlink data to terminal device 104 or terminal device 106. Network devices and terminal devices may communicate with each other through other devices or network elements. Network device 110 may send downlink data to terminal devices 101-106 and may also receive uplink data sent by terminal devices 101-106. Of course, terminal devices 101-106 may also send uplink data to network device 110 and receive downlink data sent by network device 110.

[0083] The network device 110 is a node in a radio access network (RAN), which may also be referred to as a base station or a RAN node (or device). Currently, some examples of access network devices 101 include: an evolved node B (eNB), a radio network controller (RNC), a node B (NB), a base station controller (BSC), a base transceiver station (BTS), a home base station (e.g., a home evolved NodeB, or home NodeB, HNB), a baseband unit (BBU), an access point (AP) in a wireless fidelity (WIFI) system, a wireless relay node, a wireless backhaul node, a transmission point (TP) or a transmission reception point (TRP), a satellite, an unmanned aerial vehicle, etc. The network device may also be a next generation NodeB (gNB) or a TRP or TP in a 5G system, or one or a group of antenna panels (including multiple antenna panels) of a base station in a 5G system. In addition, the network device may also be a network node constituting a gNB or TP, such as a BBU or a distributed unit (DU). Alternatively, the network device may also be a device that performs network-side functions in a device-to-device (D2D) communication system, a machine-to-machine (M2M) communication system, an Internet of Things (IoT), an Internet of Vehicles (IoV) communication system, or other communication systems. The network device 110 may also be a network device in a possible future communication system. The embodiments of the present application do not limit the specific technology and specific device form adopted by the network device.

[0084] Terminal devices 101-106, which may also be referred to as user equipment (UE), mobile station (MS), mobile terminal (MT), access terminal, subscriber unit, subscriber station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent, or user device, are devices that provide voice or data connectivity to users and may also be IoT devices. For example, terminal devices 101-106 include handheld devices and vehicle-mounted devices with wireless communication capabilities. Currently, terminal devices 101 to 106 may be: mobile phones, tablet computers, laptop computers, PDAs, mobile internet devices (MIDs), wearable devices (such as smart watches, smart bracelets, pedometers, etc.), vehicle-mounted devices (such as cars, bicycles, electric vehicles, airplanes, ships, trains, high-speed trains, etc.), virtual reality (VR) devices, augmented reality (AR) devices, wireless terminals in industrial control, smart home devices (such as refrigerators, televisions, air conditioners, electric meters, etc.), intelligent robots, workshop equipment, wireless terminals in self-driving cars, wireless terminals in remote medical surgery, wireless terminals in smart grids, wireless terminals in transportation safety, wireless terminals in smart cities, wireless terminals in smart homes, flying devices (such as intelligent robots, hot air balloons, drones, airplanes), etc. The terminal devices 101 to 106 may also be other devices having terminal functions. For example, the terminal devices 101 to 106 may also be devices that serve as terminal functions in D2D communications.

[0085] Based on the description of the terrestrial communication system architecture shown in Figure 1, the non-terrestrial network (NTN) communication system that can be applied to the embodiments of the present application is illustrated. The NTN, which includes nodes such as satellite networks, high-altitude platforms, and drones, offers significant advantages, including global coverage, long-distance transmission, flexible networking, convenient deployment, and freedom from geographical restrictions. It has been widely used in a variety of fields, including maritime communications, positioning and navigation, disaster relief, scientific experiments, video broadcasting, and Earth observation. The integration of terrestrial 5G networks and satellite networks, leveraging their strengths and weaknesses, together forms a seamless, integrated global communication network covering land, sea, air, space, and ground, meeting the diverse service needs of users everywhere. In the embodiments of the present application, NTN communication is exemplified by satellite communication, or, more precisely, the NTN communication system is exemplified by a satellite system. As shown in Figure 2, the NTN communication system includes a satellite 201 and a terminal device 202. The explanation of terminal device 202 can refer to the description of terminal devices 101 to 106 above. Satellite 201 can also be referred to as a high-altitude platform, a high-altitude aircraft, or a satellite base station. Considering the NTN communication system in relation to the terrestrial network communication system, satellite 201 can be considered as one or more network devices within the terrestrial network communication system architecture. Satellite 201 provides communication services to terminal device 202 and can also connect to core network equipment. The structure and functions of network device 201 can also be referenced to the above description of network device 201. The communication method between satellite 201 and terminal device 202 can also be referenced to the description in FIG1 . This description will not be repeated here. The solutions in the embodiments of this application can also be applied directly to terrestrial communication networks, or after minor modifications as would be appreciated by those skilled in the art, and will not be further described here.

[0086] Taking 5G as an example, a 5G satellite communication system architecture is shown in Figure 3. Ground-based terminal devices access the network via the 5G new air interface. 5G base stations are deployed on satellites and connected to the ground core network via wireless links. Wireless links also exist between satellites, enabling signaling exchanges and user data transmission between base stations. The devices and interfaces in Figure 3 are described below:

[0087] 5G core network: This network handles services such as user access control, mobility management, session management, user security authentication, and billing. It consists of multiple functional units, divided into control plane and data plane functional entities. The Access and Mobility Management Element (AMF) is responsible for user access management, security authentication, and mobility management. The User Plane Element (UPF) manages user plane data transmission, traffic statistics, and other functions.

[0088] Ground station: responsible for forwarding signaling and business data between satellite base stations and 5G core network.

[0089] 5G New Air Interface: The wireless link between the terminal and the base station.

[0090] Xn interface: The interface between 5G base stations, mainly used for signaling interactions such as switching.

[0091] NG interface: The interface between the 5G base station and the 5G core network, which mainly interacts with the core network's NAS and other signaling, as well as user business data.

[0092] As shown in Figure 4, it is a schematic diagram of another possible satellite communication system architecture applicable to this application. If the satellite communication system is compared with the terrestrial communication system, the satellite can be regarded as one or more network devices on the ground, such as base stations. Access point 1, access point 2, and even access point 3 to access point n (not marked in the figure), the satellite provides communication services to the terminal device, and the satellite can also be connected to the core network equipment (such as access and mobility management function (AMF). The satellite can be a low earth orbit (LEO) satellite or a non-geostationary earth orbit (NGEO) satellite.

[0093] As an example, the satellite communication system in Figure 4 includes satellite 401, satellite 402 and satellite 403. Each satellite can provide communication services, navigation services, positioning services, etc. to terminal devices through multiple beams. The satellites in this scenario can be LEO satellites. Satellites use multiple beams to cover the service area, and different beams can communicate through one or more of time division, frequency division and space division. Satellites communicate wirelessly with terminal devices through broadcast communication signals and navigation signals, etc. Satellites can communicate wirelessly with ground station equipment, as shown in Figure 4 where satellite 403 is connected to a ground station equipment. The satellites mentioned in the embodiments of the present application may be satellite base stations, and may also include orbital receivers or repeaters for relaying information, or may be network-side equipment carried on satellites.

[0094] Among them, some examples of ground station equipment are as follows: equipment in the core network (CN) of the existing mobile communication architecture (such as the 3GPP access architecture of the 5G network) or equipment in the core network of the future mobile communication architecture. The core network provides an interface to the data network as a bearer network, and provides communication connection, authentication, management, policy control and data service bearing for user equipment (UE). Among them, CN may further include: access and mobility management function (AMF), session management function (SMF), authentication server function (AUSF), policy control function (PCF), user plane function (UPF) and other network elements. Among them, the AMF network element is used to manage the access and mobility of UE, and is mainly responsible for UE authentication, UE mobility management, UE paging and other functions.

[0095] Satellite communication systems include transparent and non-transparent satellite architectures. Transparent transmission, also known as bent-pipe transmission, involves signals undergoing only frequency conversion and amplification on the satellite, making the satellite transparent to the signal, as if it were non-existent. Non-transparent transmission, also known as regenerative (on-board access / processing) transmission, involves satellites embodying some or all of the base station functions. For example, satellites 401 and 402 in Figure 4 represent non-transparent satellite architectures, while satellite 403 represents a transparent satellite architecture. Satellites can operate in either quasi-Earth-fixed or satellite-fixed modes.

[0096] The network devices in the terrestrial communication system and the satellites in the NTN communication system are uniformly regarded as network devices. The device used to implement the function of the network device can be a network device; it can also be a device that can support the network device to implement the function, such as a chip system, which can be installed in the network device. When describing the technical solutions provided by the embodiments of the present application below, the technical solutions provided by the embodiments of the present application are described by taking the device used to implement the function of the network device as a satellite as an example. It can be understood that when the method provided by the embodiments of the present application is applied to a terrestrial network communication system, the actions performed by the satellite can be applied to the base station or network device for execution.

[0097] In the embodiments of the present application, the device for realizing the function of the terminal device may be a terminal device; or it may be a device capable of supporting the terminal device to realize the function, such as a chip system, a hardware circuit, a software module, or a hardware circuit plus a software module, which device may be installed in the terminal device or used in combination with the terminal device. In the embodiments of the present application, the chip system may be composed of a chip, or may include a chip and other discrete devices. In the technical solutions provided in the embodiments of the present application, the technical solutions provided in the embodiments of the present application are described by taking the case where the device for realizing the function of the terminal device is a terminal device as an example.

[0098] To facilitate understanding of the embodiments of the present application, the application scenarios of the present application are introduced below. The business scenarios described in the embodiments of the present application are intended to more clearly illustrate the technical solutions of the embodiments of the present application, and do not constitute a limitation on the technical solutions provided by the embodiments of the present application. Ordinary technicians in this field can know that with the emergence of new business scenarios, the technical solutions provided by the embodiments of the present application are also applicable to similar technical problems.

[0099] A single satellite can cover thousands or even tens of thousands of kilometers, while a single beam can cover tens or even thousands of kilometers. To support wide-area coverage, a satellite is typically equipped with dozens, hundreds, or even more beams. To alleviate the contradiction between a single satellite's small payload and wide coverage, beam hopping can be used to achieve regional coverage. This means that a satellite can be equipped with multiple beams to cover a wider area, but only use a smaller number of beams for regional coverage within a given time unit. Multiple beams used in different time units can cover a wider area. For example, as shown in Figure 5, a satellite is equipped with 16 beams to cover a wider area, but only uses four beams for regional coverage within a given time unit. In time unit T1, four beams numbered 0, 1, 4, and 5 are used for regional coverage; in time unit T2, four beams numbered 2, 3, 6, and 7 are used for regional coverage. Similarly, the entire area covered by the single satellite (i.e., the area corresponding to the 16 beams) is served using a time-sharing method during T1, T2, T3, and T4. A time unit can be tens of milliseconds, a few milliseconds, or even smaller. In satellite communication networks, a satellite is equipped with multiple beams. A satellite's beam refers to the shape of electromagnetic waves emitted by the satellite antenna on the Earth's surface, much like the beam of a flashlight has a certain range. Alternatively, the signal transmitted by the satellite is not radiated 360 degrees, but is concentrated in a specific direction. In one possible design, one satellite beam corresponds to one cell; in another, two or more satellite beams correspond to one cell.

[0100] In a beam-hopping satellite communication system, the movement of the satellite can cause group handoffs for terminal devices within a certain zone. As shown in Figure 6, the UE cluster within a single beam in zone Z2 is denoted as UE-G1, and UE-G1 contains multiple UEs. At time T1, UE-G1 is served by one or more beams of satellite SAT-2. At time T2, the movement of satellite SAT-2 causes this beam to be unserved, and one or more beams of satellite SAT-1 take over UE-G1's service, causing a group handoff for UE-G1. In addition, due to the high satellite movement speed of approximately 7.5 km / s, group handoffs occur approximately every few seconds to tens of seconds. In other words, in a beam-hopping satellite system, group handoffs of terminal devices triggered by satellite movement become the norm. Group handoffs of terminal devices can also be described as UE group handoffs, user group handoffs, etc.

[0101] At present, cell switching in terrestrial networks is mainly triggered by the movement of terminal devices. Generally, the network device can send the measurement configuration corresponding to the serving cell and the neighboring cell to the terminal device, and the UE measures the cell signal quality according to the measurement configuration, such as measuring the reference signal received power (RSRP), the reference signal received quality (RSRQ), and the reference signal or signal to interference plus noise ratio (SINR). One or more of the following. The terminal device reports the measurement results to the network device, and the network device selects a suitable neighboring cell based on the received measurement results, and exchanges user switching-related context information, admission control, reserved resources and other information. The network device then sends switching-related control information to the terminal device through the serving cell, and completes the access process in the new cell. If the existing cell switching design is applied to the beam-hopping satellite system, the efficiency and success rate of group switching caused by satellite movement will be low.

[0102] Based on this, embodiments of the present application provide a handover method and apparatus that design different measurement configurations for group handovers caused by satellite motion and cell handovers triggered by terminal device mobility. These configurations are adaptable to various communication scenarios, helping terminal devices flexibly select appropriate measurement configurations for cell handovers, thereby improving the efficiency and success rate of cell handovers. The handover method is further described in detail below with reference to FIG7 .

[0103] FIG7 illustrates a switching method, which includes the following process.

[0104] S701: A network device sends first measurement configuration information to a terminal device.

[0105] Among them, the first measurement configuration information is used to configure the transmission resources of the first type of downlink reference signal. The first type of downlink reference signal is used for cell switching, and the cell switching includes cell switching of a terminal device in a connected state, or cell reselection of a terminal device in an idle state or an inactive state. It can be understood that the cell reselection here is a special case of cell switching. Optionally, in a beam-hopping satellite system, the first type of downlink reference signal is used for cell switching triggered by satellite movement, or it can be described as: the first type of downlink reference signal is used for terminal device group switching triggered by network device movement. It can be understood that the network device is a service satellite or ground device of the terminal device.

[0106] In one possible design, the first measurement configuration information is used to configure the transmission resources of the first type of downlink reference signal from the target network device; wherein the target network device may be an adjacent satellite of the current serving satellite, and the adjacent satellite is about to take over the current serving satellite to provide services for the terminal device. For example, FIG8 illustrates that the network device serves multiple wave positions (i.e., geographical areas) through at least one cell. At the first time, the network device (SAT-K) provides services to the terminal device in wave position bw#b through the cell PCI-K1. As the satellite moves, the adjacent satellite (SAT-L) is about to take over the service to the terminal device in wave position bw#b through the cell PCI-LI. It can be understood that the serving satellite and adjacent satellite corresponding to different times are different.

[0107] In a specific implementation, the network device may negotiate with the target network device to determine the transmission resources of the first type of downlink reference signal. Exemplarily, the transmission resources of the first type of downlink reference signal include one or more of the following: the time domain resources corresponding to the first type of downlink reference signal, the transmission period of the first type of downlink reference signal, the sequence corresponding to the first type of downlink reference signal, the polarization mode corresponding to the first type of downlink reference signal, the frequency domain resources corresponding to the first type of downlink reference signal, the beam corresponding to the first type of downlink reference signal, the receiving window corresponding to the first type of downlink reference signal, and the receiving window offset corresponding to the first type of downlink reference signal. It can be understood that the receiving window offset refers to the offset between the receiving window corresponding to the first type of downlink reference signal and the reference receiving window.

[0108] Optionally, the time domain resources occupied by the first type of downlink reference signal can use a bitmap to represent the sending position of the first type of downlink reference signal in the time domain. The transmission period of the first type of downlink reference signal is related to the motion state of the satellite, and the transmission period of the first type of downlink reference signal can be determined by the latitude position involved in the motion trajectory of the satellite. For example, different periods can be used at low latitudes and high latitudes, where low latitudes can indicate latitudes within 50 degrees north and south latitudes, and high latitudes correspond to latitudes above 50 degrees north and south latitudes. For example, the period corresponding to the low latitude position is 30s, and the period corresponding to the high latitude position is 5s.

[0109] Optionally, the receiving window corresponding to the first type of downlink reference signal can be represented by the time-frequency resources occupied by the receiving window, or by the offset between the receiving window and the reference receiving window. In one possible implementation, the time domain resources of the receiving window are at the cell level, that is, terminal devices on all wave positions covered by a cell can measure the first type of downlink reference signal based on the receiving window. In another possible implementation, the time domain resources of the receiving window are at the wave position level, and different wave positions correspond to different receiving windows. Exemplarily, in the case of being represented by the offset between the receiving window and the reference receiving window, the network device configures the receiving window corresponding to the first type of downlink reference signal in the first measurement configuration information specifically including: the network device indicates the time-frequency resources of the reference receiving window and the offsets corresponding to multiple wave positions in the first measurement configuration information, and the offsets corresponding to different wave positions are different. Optionally, the network device may also indicate the first access resource associated with the first type of downlink reference signal in the first configuration information, and the first access resource is used for cell switching triggered by satellite motion. Among them, the first access resource may include one or more of the following: the period of the access opportunity (random access channel occasion, RO), the frequency domain resources of RO, the preamble index, the mask index, the access beam identifier, the ephemeris information of the target network device (adjacent satellite), and the paging configuration. Taking into account that satellite movement will normally cause terminal device group switching, that is, multiple terminal devices may periodically need to perform cell switching together. Then in a possible design, the access opportunity (random access channel occasion, RO) in the first access resource can be greater than the access opportunity in the random access resource, and the period of RO in the first access resource is also greater than the period of RO in the random access resource.

[0110] Optionally, the first downlink reference signal may be a synchronization signal block (SSB) for cell switching triggered by satellite motion. To distinguish it from the SSB used for random access, in an embodiment of the present application, the SSB used for cell switching triggered by satellite motion is referred to as HO-SSB, and the SSB used for random access is referred to as NR-SSB. Of course, other names may be used to distinguish the two types of SSBs, and the embodiment of the present application is not limited to this. Similarly, in an embodiment of the present application, the RO in the first access resource is referred to as HO-RO to distinguish it from the RO in the random access resource. In another possible design, the first measurement configuration information is used to configure multiple transmission resources for the first type of downlink reference signal, and the activation time of at least two of the multiple transmission resources of the first type of downlink reference signal is different. Optionally, the at least two transmission resources are activated cyclically. In a specific implementation, a timer for activation may be configured for the multiple transmission resources of the first downlink reference signal. Such a design may be applied to a scenario in which a terminal device cyclically switches between multiple cell groups due to satellite movement. It is understandable that a cell group is composed of multiple cells and may also be referred to as a cell set.

[0111] Taking the example of a terminal device cyclically switching between a first cell group and a second cell group, the network device can configure the first transmission resource and the second transmission resource of the first reference signal using the first measurement configuration information. The first transmission resource corresponds to the first cell group, and the second transmission resource corresponds to the second cell group. In a scenario where satellite movement triggers cell switching, the terminal device can switch between the first cell group and the second cell group based on the first transmission resource or the second transmission resource, and different satellites can provide services to the terminal device through the first cell group or the second cell group. As shown in Figure 9, the terminal device is located at wave position bw#b. Satellite SAT-L1 provides services to the terminal device through PCI-Y2 from T1 to T2 and completes the switch from PCI-Y2 to PCI-Y1 at T2. Satellite SAT-K1 provides services to the terminal device through PCI-Y1 from T3 to T5 and completes the switch from PCI-Y1 to PCI-Y2 at T5. Satellite SAT-M1 provides services to the terminal device through PCL-Y2 at T6. By designing measurement configuration information corresponding to cell groups, terminal devices can reuse measurement configuration information when cyclically switching between multiple cell groups. This means that measurement configuration only needs to be performed once, simplifying the measurement configuration process and mobility management, and improving switching efficiency. It is understood that cyclic switching between multiple cell groups by terminal devices can be triggered by the motion of different satellites.

[0112] Optionally, the network device may further indicate in the first configuration information that the first cell group is associated with a second access resource and the second cell group is associated with a third access resource, and the second access resource / third access resource is used for cell switching triggered by satellite motion. For details, please refer to the description of the aforementioned first access resource. For example, if the terminal device determines to perform cell switching based on the first transmission resource associated with the first cell group, then the target cell may be accessed based on the second access resource associated with the first cell group; if the terminal device determines to perform cell switching based on the third transmission resource associated with the second cell group, then the target cell may be accessed based on the third access resource associated with the first cell group.

[0113] In addition, in the above two possible designs, the network device may also configure a trigger condition for the terminal device to determine whether to perform a cell handover. For example, the network device may determine conditional handover (CHO) information based on the mobility management configuration of layer 1 (L1) / layer 2 (L2), such as the CHO information indicating that a cell handover is performed when the measurement result of the reference signal measured by the terminal device meets the set conditions. It can be understood that the mobility management configuration of L1 / L2 refers to the management configuration of inter-cell mobility centered on L1 / L2. In the mobility management configuration of L1 / L2, the measurement results obtained by the terminal device measuring the first type of downlink reference signal may include one or more of the following: reference signal power (reference signal received power, RSRP), reference signal quality (reference signal received quality, RSRQ), and reference signal signal-to-interference-plus-noise ratio (SINR). The CHO information that the network device can configure for the terminal device may include thresholds (or threshold values) corresponding to various measurement results. For example, the network device can configure an RSRP threshold for RSRP, and then the terminal device performs cell switching when it determines that the L1-RSRP obtained by measuring the first type of downlink reference signal is greater than or equal to the L1-RSRP threshold; for example, the network device can configure an RSRQ threshold for RSRQ, and then the terminal device performs cell switching when it determines that the L1-RSRQ obtained by measuring the first type of downlink reference signal is greater than or equal to the L1-RSRQ threshold; for another example, the network device can configure an SINR threshold for SINR, and then the terminal device performs cell switching when it determines that the L1-SINR obtained by measuring the first type of downlink reference signal is greater than or equal to the L1-SINR threshold.

[0114] Based on this, in one possible design, the network device may further indicate, in the first measurement configuration information, the CHO information corresponding to the aforementioned L1 / L2 mobility management configuration. For example, the first measurement configuration information may include one or more of the following: a first signal quality threshold (used to measure RSRQ), a first signal power threshold (used to measure RSRP), and a first signal-to-interference-and-noise ratio threshold (used to measure SINR).

[0115] S702: The network device sends second measurement configuration information to the terminal device.

[0116] The second measurement configuration information is used to configure transmission resources for a second type of downlink reference signal, where the second type of downlink reference signal is used for cell switching, for example, the second type of downlink reference signal is used for cell switching triggered by terminal device mobility. Optionally, the second type of downlink reference signal may be an NR-SSB, that is, the SSB used for cell switching triggered by terminal device mobility may be the same as the SSB used for random access.

[0117] In a specific implementation, the transmission resources of the second type of downlink reference signal include one or more of the following: the time domain resources corresponding to the second type of downlink reference signal, the transmission period of the second type of downlink reference signal, the sequence corresponding to the second type of downlink reference signal, the polarization mode corresponding to the second type of downlink reference signal, the frequency domain resources corresponding to the second type of downlink reference signal, the beam corresponding to the second type of downlink reference signal, the receiving window corresponding to the second type of downlink reference signal, and the receiving window offset corresponding to the second type of downlink reference signal. Optionally, the network device can be a service satellite or ground device of the terminal device, and the network device can broadcast the second measurement configuration information within the coverage range of one or more beams of the service satellite. As an example, the terminal device on bw#b in Figure 8 can receive the aforementioned second measurement configuration information. In addition, Figure 8 also illustrates a terminal device on bw#6, and the terminal device on bw#6 can receive the aforementioned second measurement configuration information.

[0118] In a specific implementation, the transmission resources of the second-type downlink reference signal are different from the transmission resources of the first-type downlink reference signal (e.g., one or more of the corresponding time domain, frequency domain, polarization domain, spatial domain, code domain, etc.). This design can avoid resource conflicts between the two types of cell handovers and also facilitate the terminal device to distinguish between the first-type downlink reference signal and the second-type downlink reference signal.

[0119] Optionally, the network device may further indicate, in the second measurement configuration information, that the second type of downlink reference signal is associated with a second access resource. Optionally, the second access resource may be a random access resource (denoted as RO). The second access resource is different from the aforementioned first random access resource. For example, a HO-RO period in the first access resource is also greater than a RO period in the second access resource.

[0120] In addition, optionally, the network device may also configure a trigger condition for the terminal device to determine whether to perform a cell handover. For example, the network device may determine conditional handover (CHO) information based on the mobility management configuration of layer 1 (L1) / layer 2 (L2), such as the CHO information indicating that a cell handover is performed when the measurement result of the reference signal measured by the terminal device meets the set conditions. It can be understood that the mobility management configuration of L1 / L2 refers to the management configuration of inter-cell mobility centered on L1 / L2. In the mobility management configuration of L1 / L2, the measurement results obtained by the terminal device measuring the second type of downlink reference signal may include one or more of the following: reference signal power (reference signal received power, RSRP), reference signal quality (reference signal received quality, RSRQ), and reference signal signal-to-interference-plus-noise ratio (SINR). The CHO information that the network device can configure for the terminal device may include thresholds (or threshold values) corresponding to various measurement results. For example, the network device can configure an RSRP threshold for RSRP, and then the terminal device performs cell switching when it determines that the RSRP obtained by measuring the second type of downlink reference signal is greater than or equal to the RSRP threshold; for example, the network device can configure an RSRQ threshold for RSRQ, and then the terminal device performs cell switching when it determines that the RSRQ obtained by measuring the second type of downlink reference signal is greater than or equal to the RSRQ threshold; for another example, the network device can configure an SINR threshold for SINR, and then the terminal device performs cell switching when it determines that the SINR obtained by measuring the second type of downlink reference signal is greater than or equal to the SINR threshold.

[0121] Based on this, in a possible design, the network device may further indicate the CHO information corresponding to the aforementioned L1 / L2 mobility management configuration in the second measurement configuration information. For example, the second measurement configuration information may include one or more of the following: a second signal quality threshold (used to measure RSRQ), a second signal power threshold (used to measure RSRP), and a second signal signal to interference and noise ratio threshold (used to measure SINR). It is understandable that the second signal quality threshold is the same as or different from the first signal quality threshold, the second signal power threshold is the same as or different from the first power quality threshold, and the second signal signal to interference and noise ratio threshold is the same as or different from the first signal signal to interference and noise ratio threshold, and the embodiments of the present application are not limited to this.

[0122] It is understandable that the embodiment of the present application does not limit the execution order between S701 and S702.

[0123] Furthermore, the terminal device can decide to execute steps S703 and / or S704 based on its own location information. For example, S703 can be executed when the wave position where the terminal device is located is included in the area where satellite mobile triggers group switching, and S704 can be executed when the terminal device itself moves.

[0124] S703: The terminal device measures the first type of downlink reference signal according to the first location information and the first measurement configuration information.

[0125] The first location information may refer to the waveband that the terminal device is located in. For example, FIG8 or FIG9 shows that the terminal device is located at waveband bw#b, which is included in the area where satellite mobile triggers group handover.

[0126] Corresponding to the description in S701, if the first measurement configuration information configures a transmission resource for a first-type downlink reference signal, the terminal device may measure the first-type downlink reference signal from the adjacent satellite based on the measurement time corresponding to the first location information (wavelength) in the first measurement configuration information. For example, a terminal device at wavelength bw#b illustrated in FIG8 may measure the first-type downlink reference signal from SAT-L based on the measurement time corresponding to bw#b.

[0127] If the first measurement configuration information configures the first transmission resource and the second transmission resource of the first type of downlink reference signal, the first transmission resource corresponds to the first cell group, and the second transmission resource corresponds to the second cell group; then during the activation time of the first transmission resource, the terminal device can measure the first type of downlink reference signal from the first cell group according to the measurement time corresponding to the first position information in the first transmission resource; or, during the activation time of the second transmission resource, the terminal device can measure the first type of downlink reference signal from the second cell group according to the measurement time corresponding to the first position information in the second transmission resource. For example, Figure 9 shows that at time T2, the transmission resource corresponding to the cell group PCI-Y1 is in an activated state, and the terminal device on the wave position bw#b can measure the first type of downlink reference signal from PCI-Y1 according to the measurement time corresponding to bw#b in the transmission resource corresponding to PCI-Y1, or it can also be understood as measuring the first type of downlink reference signal sent by SAT-K1 through PCI-Y1. At time T5, the transmission resources corresponding to the cell group PCI-Y2 are in an activated state. The terminal device on the wave position bw#b can measure the first type of downlink reference signal from PCI-Y2 according to the measurement time corresponding to bw#b in the transmission resources corresponding to PCI-Y2, or it can also be understood as measuring the first type of downlink reference signal sent by SAT-M1 through PCI-Y2.

[0128] S704: The terminal device measures the second type of downlink reference signal according to the second location information of the terminal device and the second measurement configuration information.

[0129] The second location information refers to the current geographical location of the terminal device, and can be implemented as GNSS location information, for example.

[0130] In one possible design, if the distance between the second location information of the terminal device and the first reference location in the serving cell is greater than a first threshold, the terminal device measures the second type of downlink reference signal according to the second measurement configuration information. The first reference location may be the center point of the serving cell or the center point of the serving wave position.

[0131] In another possible design, if the distance between the second location information of the terminal device and the first reference location in the serving cell is greater than a first threshold, and the distance between the second location information of the terminal device and the second reference location in the neighboring cell is less than a second threshold, the terminal device measures the second type of downlink reference signal according to the second measurement configuration information. The second reference location may be the center point of the neighboring cell.

[0132] Optionally, the network device may indicate one or more of the first reference location, the second reference location, the first threshold, and the second threshold in the second measurement configuration information. It is understood that the first threshold and the second threshold may be the same or different, and this embodiment of the application is not limited thereto.

[0133] S705, the terminal device determines whether to perform cell switching based on the measurement result. Exemplarily, when the terminal device executes S703, the measurement result includes the signal quality of the first downlink reference signal. In one possible design, the terminal device decides to perform cell switching when it determines that the signal quality of the first downlink reference signal is greater than or equal to the aforementioned first signal quality threshold, and the cell switching is a group switching triggered by satellite movement. In another possible design, the terminal device may report the signal quality of the first type of downlink reference signal to the network device, and the network device may trigger the terminal device to perform cell switching through L1 / L2 control signaling when it determines that the signal quality of the first type of downlink reference signal is greater than or equal to the first signal quality threshold. Optionally, the L1 / L2 control signaling may be a media access control control element (MAC-CE).

[0134] Furthermore, the terminal device can access the target cell based on the first access resource described in S701. In one possible implementation, the network device can configure the first access resource associated with the first type of downlink reference signal for the terminal device through the physical downlink control channel (PDCCH). Accordingly, the terminal device can use the blind detection scrambling code to blindly detect the aforementioned PDCHH on the control resource set CORESET associated with the received first type of downlink reference signal, thereby determining the first access resource. Optionally, the blind detection scrambling code can be a dedicated ID of the terminal device, such as a radio network temporary identity (RNTI) or a group radio network temporary identity (G-RNTI) corresponding to the geographical area where the terminal device is located. It can be understood that multiple terminal devices in the same geographical area can use the same G-RNTI for blind detection.

[0135] Exemplarily, when the terminal device executes S704, the measurement result includes the signal quality of the second downlink reference signal. In one possible design, when the terminal device determines that the signal quality of the second downlink reference signal is greater than or equal to the aforementioned second signal quality threshold, the terminal device decides to perform cell switching, and the cell switching is a group switching triggered by satellite movement. In another possible design, the terminal device may report the signal quality of the second type of downlink reference signal to the network device, and when the network device determines that the signal quality of the second type of downlink reference signal is greater than or equal to the second signal quality threshold, the network device may trigger the terminal device to perform cell switching through L1 / L2 control signaling. Optionally, the L1 / L2 control signaling may be a media access control control element (MAC-CE).

[0136] Furthermore, the terminal device can access the target cell based on the second access resource described in S701. In one possible implementation, the network device can configure the second access resource associated with the second type of downlink reference signal for the terminal device through the physical downlink control channel (PDCCH). Accordingly, the terminal device can use the blind detection scrambling code to blindly detect the aforementioned PDCHH on the control resource set CORESET associated with the received second type of downlink reference signal, thereby determining the second access resource. Optionally, the blind detection scrambling code can be a dedicated ID of the terminal device, such as a radio network temporary identity (RNTI) or a group radio network temporary identity (G-RNTI) corresponding to the geographical area where the terminal device is located. It can be understood that multiple terminal devices in the same geographical area can use the same G-RNTI for blind detection.

[0137] The above method provided in the embodiment of the present application designs a dedicated reference signal measurement configuration for group switching caused by satellite movement, which facilitates the terminal device to flexibly and quickly determine group switching or switching triggered by terminal device movement, and can improve switching efficiency and success rate.

[0138] Based on the same concept, referring to FIG10 , an embodiment of the present application provides a communication device 1000, which includes a processing module 1001 and a communication module 1002. The communication device 1000 can be a terminal device, or a communication device applied to or used in conjunction with a terminal device, capable of implementing a communication method executed by the terminal device; or the communication device 1000 can be a network device, or a communication device applied to or used in conjunction with a network device, capable of implementing a communication method executed by the network device.

[0139] The communication module may also be referred to as a transceiver module, transceiver, transceiver, or transceiver device. The processing module may also be referred to as a processor, processing board, processing unit, or processing device. Optionally, the communication module is used to perform the sending and receiving operations on the terminal device side or the network device side in the above method. The device in the communication module that implements the receiving function can be considered a receiving unit, and the device in the communication module that implements the sending function can be considered a sending unit. That is, the communication module includes a receiving unit and a sending unit.

[0140] When the communication device 1000 is applied to a terminal device, the processing module 1001 can be used to implement the processing function of the terminal device in the example shown in FIG7 , and the communication module 1002 can be used to implement the transceiver function of the terminal device in the example shown in FIG7 . Optionally, the communication device can also be understood with reference to the third aspect and possible designs of the third aspect in the Summary of the Invention.

[0141] When the communication device 1000 is applied to a network device, the processing module 1001 can be used to implement the processing function of the network device in the example shown in FIG7 , and the communication module 1002 can be used to implement the transceiver function of the network device in the example shown in FIG7 . Alternatively, the communication device can also be understood with reference to the fourth aspect and possible designs of the fourth aspect in the Summary of the Invention.

[0142] In addition, it should be noted that in one possible design, the aforementioned communication module and / or processing module can be implemented through a virtual module. For example, the processing module can be implemented through a software functional unit or a virtual device, and the communication module can be implemented through a software function or a virtual device. In another possible design, the processing module or the communication module can also be implemented through a physical device. For example, if the device is implemented using a chip / chip circuit, the communication module can be an input / output circuit and / or a communication interface that performs input operations (corresponding to the aforementioned receiving operations) and output operations (corresponding to the aforementioned sending operations); the processing module is an integrated processor or microprocessor or integrated circuit.

[0143] The division of modules in the embodiments of the present application is illustrative and is merely a logical functional division. In actual implementation, other division methods may be used. Furthermore, the functional modules in the various examples of the embodiments of the present application may be integrated into a single processor, or may exist physically separately, or two or more modules may be integrated into a single module. The integrated modules may be implemented in either hardware or software functional modules.

[0144] Based on the same technical concept, the embodiment of the present application further provides a communication device 1100. For example, the communication device 1100 can be a chip or a chip system. Optionally, in the embodiment of the present application, the chip system can be composed of a chip, or can include a chip and other discrete devices.

[0145] The communication device 1100 can be used to implement the functions of any network element in the communication system described in the above examples. The communication device 1100 may include at least one processor 1110. Optionally, the processor 1110 is coupled to a memory, and the memory may be located within the device; or the memory may be integrated with the processor; or the memory may be located outside the device. For example, the communication device 1100 may also include at least one memory 1120. The memory 1120 stores the necessary computer programs, computer programs or instructions and / or data for implementing any of the above examples; the processor 1110 may execute the computer program stored in the memory 1120 to complete the method in any of the above examples.

[0146] The communication device 1100 may also include a communication interface 1130, through which the communication device 1100 can exchange information with other devices. Exemplarily, the communication interface 1130 may be a transceiver, a circuit, a bus, a module, a pin, or another type of communication interface. When the communication device 1100 is a chip-type device or circuit, the communication interface 1130 in the device 1100 may also be an input-output circuit that can input information (or receive information) and output information (or send information). The processor is an integrated processor or microprocessor or integrated circuit or logic circuit, and the processor can determine output information based on the input information.

[0147] The coupling in the embodiments of the present application is an indirect coupling or communication connection between devices, units, or modules, which can be electrical, mechanical, or other forms, and is used for information exchange between devices, units, or modules. The processor 1110 may operate in conjunction with the memory 1120 and the communication interface 1130. The specific connection medium between the processor 1110, memory 1120, and communication interface 1130 is not limited in the embodiments of the present application.

[0148] Optionally, referring to FIG11 , the processor 1110, the memory 1120, and the communication interface 1130 are interconnected via a bus 1140. The bus 1140 may be a peripheral component interconnect (PCI) bus or an extended industry standard architecture (EISA) bus, etc. The bus may be classified as an address bus, a data bus, a control bus, etc. For ease of illustration, FIG11 shows only one thick line, but this does not mean that there is only one bus or only one type of bus.

[0149] In the embodiments of the present application, the processor may be a general-purpose processor, a digital signal processor, an application-specific integrated circuit, a field programmable gate array or other programmable logic device, a discrete gate or transistor logic device, or a discrete hardware component, and may implement or execute the various methods, steps, and logic block diagrams of the embodiments of the present application. The general-purpose processor may be a microprocessor or any conventional processor, etc. The steps of the methods of the embodiments of the present application may be directly implemented as being executed by a hardware processor, or may be executed by a combination of hardware and software modules in the processor.

[0150] In an embodiment of the present application, the memory may be a non-volatile memory, such as a hard disk drive (HDD) or a solid-state drive (SSD), etc., or a volatile memory (volatile memory), such as a random-access memory (RAM). The memory is any other medium that can be used to carry or store a desired program code in the form of an instruction or data structure and can be accessed by a computer, but is not limited thereto. The memory in the embodiment of the present application may also be a circuit or any other device that can implement a storage function, for storing program instructions and / or data.

[0151] In one possible implementation, the communication device 1100 can be applied to a terminal device. Specifically, the communication device 1100 can be a terminal device, or a device that can support a terminal device and implement the functions of the terminal device in any of the examples mentioned above. The memory 1120 stores a computer program (or instruction) and / or data that implements the functions of the terminal device in any of the above examples. The processor 1110 can execute the computer program stored in the memory 1120 to complete the method executed by the terminal device in any of the above examples. If the communication device is applied to a terminal device, the communication interface in the communication device 1100 can be used to interact with a network device, send information to the network device, or receive information from the network device.

[0152] In another possible implementation, the communication device 1100 can be applied to a network device. Specifically, the communication device 1100 can be a network device, or a device that can support a network device and implement the functions of the network device in any of the above-mentioned examples. The memory 1120 stores a computer program (or instruction) and / or data that implements the functions of the network device in any of the above-mentioned examples. The processor 1110 can execute the computer program stored in the memory 1120 to complete the method performed by the network device in any of the above-mentioned examples. If the communication device is applied to a network device, the communication interface in the communication device 1100 can be used to interact with a terminal device, send information to the terminal device, or receive information from the terminal device.

[0153] Since the communication device 1100 provided in this example can be applied to a network device to implement the method executed by the cell on the network device side, or applied to a terminal device to implement the method executed by the terminal device, the technical effects that can be obtained can refer to the above method examples and will not be repeated here.

[0154] The technical solutions provided in the embodiments of the present application can be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented using software, they can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the processes or functions described in the embodiments of the present application are generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, a terminal device, a network device, or other programmable device. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions can be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via a wired (e.g., coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) method. The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server or data center that includes one or more available media integrated therein. The available medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a digital video disc (DVD)), or a semiconductor medium.

[0155] In the embodiments of the present application, under the premise that there is no logical contradiction, the examples can reference each other, for example, the methods and / or terms between method embodiments can reference each other, for example, the functions and / or terms between device embodiments can reference each other, for example, the functions and / or terms between device examples and method examples can reference each other.

[0156] Obviously, those skilled in the art may make various changes and modifications to the embodiments of the present application without departing from the scope of the embodiments of the present application. Thus, if these modifications and variations of the embodiments of the present application fall within the scope of the claims of the embodiments of the present application and their equivalents, the embodiments of the present application are intended to include these modifications and variations.

Claims

1. A switching method, characterized in that: include: Acquire first measurement configuration information and second measurement configuration information; wherein the first measurement configuration information is used to configure transmission resources of a first type of downlink reference signal, the second measurement configuration information is used to configure transmission resources of a second type of downlink reference signal, and the first type of downlink reference signal and the second type of downlink reference signal are used for cell switching; Measuring the first type of downlink reference signal according to the first location information and the first measurement configuration information; and / or measuring the second type of downlink reference signal according to the second location information and the second measurement configuration information to obtain a measurement result; Whether to perform cell switching is determined according to the measurement result.

2. The method according to claim 1, characterized in that The first type of downlink reference signal is used for cell switching triggered by network device movement, and the second type of downlink reference signal is used for cell switching triggered by terminal equipment.

3. The method according to claim 1 or 2, characterized in that The measuring the first-type downlink reference signal according to the first location information and the first measurement configuration information includes: The first type of downlink reference signal from the target network device is measured according to the measurement time corresponding to the first location information in the first measurement configuration information.

4. The method according to any one of claims 1 to 3, characterized in that: The first measurement configuration information is used to configure a plurality of transmission resources of the first-type downlink reference signal, and activation times of at least two of the plurality of transmission resources of the first-type downlink reference signal are different.

5. The method according to claim 4, characterized in that The multiple transmission resources of the first type of downlink reference signal include first transmission resources corresponding to the first cell group and second transmission resources corresponding to the second cell group, and the measuring the first type of downlink reference signal according to the first location information and the first measurement configuration information includes: During the activation time of the first transmission resource, according to the measurement time corresponding to the first location information in the first transmission resource, measuring the first type of downlink reference signal from the first cell group; During the activation time of the second transmission resource, the first type of downlink reference signal from the second cell group is measured according to the measurement time corresponding to the first location information in the second transmission resource.

6. The method according to any one of claims 1 to 5, characterized in that: The first measurement configuration information is used to configure a first signal quality threshold, where the first signal quality threshold is determined based on an L1 / L2 mobility management configuration of the terminal device; The determining whether to perform cell switching according to the measurement result includes: If the signal quality of the first downlink reference signal included in the measurement result is greater than or equal to the first signal quality threshold, it is determined to perform cell switching.

7. The method according to any one of claims 1 to 6, characterized in that: The measuring the second-type downlink reference signal according to the second location information and the second measurement configuration information includes: When the distance between the second location information and the first reference location in the serving cell is greater than a first threshold, measuring the second-type downlink reference signal according to the second measurement configuration information; and / or, When the distance between the second location information and the second reference location in the neighboring cell is less than a second threshold, the second-type downlink reference signal is measured according to the second measurement configuration information.

8. The method according to claim 7, characterized in that The second measurement configuration information is further used to configure one or more of the following: the first reference position, the first threshold, the second reference position, and the second threshold.

9. The method according to any one of claims 1 to 8, characterized in that A transmission resource of the first type of downlink reference signal includes one or more of the following: a time domain resource corresponding to the first type of downlink reference signal, a transmission period of the first type of downlink reference signal, a sequence corresponding to the first type of downlink reference signal, a polarization mode corresponding to the first type of downlink reference signal, a frequency domain resource corresponding to the first type of downlink reference signal, a beam identifier corresponding to the first type of downlink reference signal, a receiving window corresponding to the first type of downlink reference signal, and a receiving window offset corresponding to the first type of downlink reference signal.

10. The method according to any one of claims 1 to 9, characterized in that: The first measurement configuration information is used to configure a first access resource associated with the first-type downlink reference signal, and the first access resource is different from a second access resource associated with the second-type downlink reference signal.

11. A switching method, characterized in that: include: Determine first measurement configuration information and second measurement configuration information; wherein the first measurement configuration information is used to configure a first type of downlink parameter The second measurement configuration information is used to configure transmission resources of a second type of downlink reference signal, and the first type of downlink reference signal and the second type of downlink reference signal are used for cell switching; The first measurement configuration information and the second measurement configuration information are sent.

12. The method according to claim 11, characterized in that The first type of downlink reference signal is used for cell switching triggered by network device movement, and the second type of downlink reference signal is used for cell switching triggered by terminal equipment.

13. The method according to claim 11 or 12, characterized in that The first measurement configuration information includes a measurement time corresponding to the first location information.

14. The method according to any one of claims 11 to 13, characterized in that: The first measurement configuration information is used to configure a plurality of transmission resources of the first-type downlink reference signal, and activation times of at least two of the plurality of transmission resources of the first-type downlink reference signal are different.

15. The method according to claim 14, characterized in that The multiple transmission resources of the first type of downlink reference signal include a first transmission resource corresponding to the first cell group and a second transmission resource corresponding to the second cell group; wherein the first transmission resource is different from the second transmission resource; the first transmission resource includes a measurement time corresponding to the first position information, and the second transmission resource includes a measurement time corresponding to the first position information.

16. The method according to any one of claims 11 to 15, characterized in that: The first measurement configuration information is used to configure a first signal quality threshold, the first signal quality threshold is determined based on the L1 / L2 mobility management configuration of the terminal device, and the first signal quality threshold is used by the terminal device to determine whether to perform a cell switch.

17. The method according to any one of claims 11 to 16, characterized in that: The second measurement configuration information is used to configure one or more of the following parameters: a first reference position in a serving cell, a first threshold, a second reference position in a neighboring cell, and a second threshold; wherein the one or more parameters configured by the second measurement configuration information are used by the terminal device to determine whether to perform measurement of the second type of downlink reference signal.

18. The method according to any one of claims 11 to 17, characterized in that: A transmission resource of the first type of downlink reference signal includes one or more of the following: a time domain resource corresponding to the first type of downlink reference signal, a transmission period of the first type of downlink reference signal, a sequence corresponding to the first type of downlink reference signal, a polarization mode corresponding to the first type of downlink reference signal, a frequency domain resource corresponding to the first type of downlink reference signal, a beam identifier corresponding to the first type of downlink reference signal, a receiving window corresponding to the first type of downlink reference signal, and a receiving window offset corresponding to the first type of downlink reference signal.

19. The method according to any one of claims 11 to 18, characterized in that: The first measurement configuration information is used to configure a first access resource associated with the first-type downlink reference signal, and the first access resource is different from a second access resource associated with the second-type downlink reference signal.

20. A communication device, characterized in that: Including communication module and processing module, The communication module is configured to obtain first measurement configuration information and second measurement configuration information; wherein the first measurement configuration information is used to configure transmission resources of a first type of downlink reference signal, the second measurement configuration information is used to configure transmission resources of a second type of downlink reference signal, and the first type of downlink reference signal and the second type of downlink reference signal are used for cell switching; The processing module is used for: Measuring the first type of downlink reference signal according to the first location information and the first measurement configuration information; and / or measuring the second type of downlink reference signal according to the second location information and the second measurement configuration information to obtain a measurement result; Whether to perform cell switching is determined according to the measurement result.

21. The device according to claim 20, characterized in that The first type of downlink reference signal is used for cell switching triggered by network device movement, and the second type of downlink reference signal is used for cell switching triggered by terminal equipment.

22. The device according to claim 20 or 21, characterized in that The processing module is specifically used for: The first type of downlink reference signal from the target network device is measured according to the measurement time corresponding to the first position information in the first measurement configuration information.

23. The device according to any one of claims 20 to 22, characterized in that The first measurement configuration information is used to configure a plurality of transmission resources of the first-type downlink reference signal, and activation times of at least two of the plurality of transmission resources of the first-type downlink reference signal are different.

24. The device according to claim 23, characterized in that The multiple transmission resources of the first type of downlink reference signal include first transmission resources corresponding to the first cell group and second transmission resources corresponding to the second cell group, and the processing module is specifically used to: within the activation time of the first transmission resource, according to the measurement time corresponding to the first location information in the first transmission resource, measuring the first-type downlink reference signal from the first cell group; During the activation time of the second transmission resource, the first type of downlink reference signal from the second cell group is measured according to the measurement time corresponding to the first location information in the second transmission resource.

25. The device according to any one of claims 20 to 24, characterized in that The first measurement configuration information is used to configure a first signal quality threshold, where the first signal quality threshold is determined based on an L1 / L2 mobility management configuration of the terminal device; The processing module is specifically used for: If the signal quality of the first downlink reference signal included in the measurement result is greater than or equal to the first signal quality threshold, it is determined to perform cell switching.

26. The device according to any one of claims 20 to 25, characterized in that The processing module is specifically used for: When the distance between the second location information and the first reference location in the serving cell is greater than a first threshold, measuring the second-type downlink reference signal according to the second measurement configuration information; and / or, When the distance between the second location information and the second reference location in the neighboring cell is less than a second threshold, the second-type downlink reference signal is measured according to the second measurement configuration information.

27. The device according to claim 26, characterized in that The second measurement configuration information is further used to configure one or more of the following: the first reference position, the first threshold, the second reference position, and the second threshold.

28. The device according to any one of claims 20 to 27, characterized in that A transmission resource of the first type of downlink reference signal includes one or more of the following: a time domain resource corresponding to the first type of downlink reference signal, a transmission period of the first type of downlink reference signal, a sequence corresponding to the first type of downlink reference signal, a polarization mode corresponding to the first type of downlink reference signal, a frequency domain resource corresponding to the first type of downlink reference signal, a beam identifier corresponding to the first type of downlink reference signal, a receiving window corresponding to the first type of downlink reference signal, and a receiving window offset corresponding to the first type of downlink reference signal.

29. The device according to any one of claims 20 to 28, characterized in that The first measurement configuration information is used to configure a first access resource associated with the first-type downlink reference signal, and the first access resource is different from a second access resource associated with the second-type downlink reference signal.

30. A communication device, characterized in that: Including processing module and communication module, The processing module is used to determine first measurement configuration information and second measurement configuration information; wherein the first measurement configuration information is used to configure transmission resources of a first type of downlink reference signal, the second measurement configuration information is used to configure transmission resources of a second type of downlink reference signal, and the first type of downlink reference signal and the second type of downlink reference signal are used for cell switching; The communication module is used to send the first measurement configuration information and the second measurement configuration information.

31. The device according to claim 30, characterized in that The first type of downlink reference signal is used for cell switching triggered by network device movement, and the second type of downlink reference signal is used for cell switching triggered by terminal equipment.

32. The device according to claim 30 or 31, characterized in that The first measurement configuration information includes a measurement time corresponding to the first location information.

33. The device according to any one of claims 30 to 32, characterized in that The first measurement configuration information is used to configure a plurality of transmission resources of the first-type downlink reference signal, and activation times of at least two of the plurality of transmission resources of the first-type downlink reference signal are different.

34. The device according to claim 33, characterized in that The multiple transmission resources of the first type of downlink reference signal include a first transmission resource corresponding to the first cell group and a second transmission resource corresponding to the second cell group; wherein the first transmission resource is different from the second transmission resource; the first transmission resource includes a measurement time corresponding to the first position information, and the second transmission resource includes a measurement time corresponding to the first position information.

35. The device according to any one of claims 30 to 34, characterized in that The first measurement configuration information is used to configure a first signal quality threshold, the first signal quality threshold is determined based on the L1 / L2 mobility management configuration of the terminal device, and the first signal quality threshold is used by the terminal device to determine whether to perform a cell switch.

36. The device according to any one of claims 30 to 35, characterized in that The second measurement configuration information is used to configure one or more of the following parameters: a first reference position in a serving cell, a first threshold, a second reference position in a neighboring cell, and a second threshold; wherein the one or more parameters configured by the second measurement configuration information are used by the terminal device to determine whether to perform measurement of the second type of downlink reference signal.

37. The device according to any one of claims 30 to 36, characterized in that A transmission resource of the first type of downlink reference signal includes one or more of the following: a time domain resource corresponding to the first type of downlink reference signal, a transmission period of the first type of downlink reference signal, a sequence corresponding to the first type of downlink reference signal, a polarization mode corresponding to the first type of downlink reference signal, a frequency domain resource corresponding to the first type of downlink reference signal, a beam identifier corresponding to the first type of downlink reference signal, a receiving window corresponding to the first type of downlink reference signal, and a receiving window offset corresponding to the first type of downlink reference signal.

38. The device according to any one of claims 30 to 37, characterized in that The first measurement configuration information is used to configure a first access resource associated with the first-type downlink reference signal, and the first access resource is different from a second access resource associated with the second-type downlink reference signal.

39. A communication device, characterized in that: include: A processor, wherein the processor is coupled to a memory, and wherein the processor is used to call computer program instructions stored in the memory to execute the method according to any one of claims 1 to 10, or to execute the method according to any one of claims 11 to 19.

40. A communication system, characterized in that: include: Terminal device, used to implement the method according to any one of claims 1 to 10; A network device, used to implement the method according to any one of claims 11 to 19.

41. A computer-readable storage medium, characterized in that The computer-readable storage medium stores instructions, and when the instructions are executed on a computer, the computer is enabled to execute the method according to any one of claims 1 to 19.

42. A chip, characterized in that: The chip is coupled to a memory, and the chip reads a computer program stored in the memory to execute the method according to any one of claims 1 to 19.

43. A computer program product, characterized in that The computer program product comprises: a computer program code, and when the computer program code is executed, the method according to any one of claims 1 to 19 is implemented.

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