Wireless communication method, environmental energy AMP device and network device

Abstract

A wireless communication method, an environmental energy AMP device and a network device, the method comprising: an environmental energy AMP device sending a first signal, the first signal being used by the network device to perform measurement to determine a target network device to which the AMP device accesses or switches.

Description

Wireless communication method, environmental energy AMP device and network device Technical Field

[0001] The embodiments of the present application relate to the field of communications, and specifically to a wireless communication method, terminal device, and network device. Background Art

[0002] In a cellular system, the mobility of the terminal device is managed according to the status of the terminal device. For example, a cell selection or reselection process can be performed for a terminal device in the Radio Resource Control (RRC) idle (RRC_IDLE) state or the RRC inactive (RRC_INACTIVE) state, and a cell switching process can be performed for a terminal device in the RRC connected (RRC_CONNECTED) state.

[0003] Due to the low cost and maintenance-free characteristics of zero-power devices, they are considered for large-scale deployment in cellular systems. However, due to the capacity limitations of zero-power devices, traditional mobility management methods cannot meet the needs of zero-power devices. Therefore, it is necessary to design a mobility management method suitable for zero-power devices.

[0004] Summary of the Invention

[0005] The present application provides a wireless communication method, an environmental energy AMP device and a network device, which can realize mobility management of zero-power devices.

[0006] In a first aspect, a method for wireless communication is provided, including: an environment capable AMP device sends a first signal, wherein the first signal is used by a network device to perform measurements to determine a target network device to which the AMP device is to access or switch.

[0007] In a second aspect, a wireless communication method is provided, comprising: a network device measures a first signal sent by an environment energy AMP device, and the measurement result of the first signal is used to determine a target network device to be accessed or switched by the AMP device.

[0008] In a third aspect, a method for wireless communication is provided, including: a second network device receives second configuration information sent by a first network device, the second configuration information is used to select a target network device to which the environment can be switched by the AMP device, the first network device is the network device currently connected to the AMP device, and the second network device is a network device other than the first network device.

[0009] In a fourth aspect, an ambient energy AMP device is provided for executing the method in the above-mentioned first aspect or its various implementations.

[0010] Specifically, the environment-capable AMP device includes a functional module for executing the method in the above-mentioned first aspect or its various implementation modes.

[0011] In a fifth aspect, a network device is provided for executing the method in the above second aspect or its various implementations.

[0012] Specifically, the network device includes a functional module for executing the method in the above-mentioned second aspect or its various implementation modes.

[0013] In a sixth aspect, a network device is provided for executing the method in the third aspect or its various implementations.

[0014] Specifically, the network device includes a functional module for executing the method in the above-mentioned third aspect or its various implementation modes.

[0015] In a seventh aspect, an ambient energy AMP device is provided, comprising a processor and a memory, wherein the memory is used to store a computer program, and the processor is used to call and run the computer program stored in the memory to perform the method of the first aspect or its respective implementations.

[0016] In an eighth aspect, a network device is provided, comprising a processor and a memory. The memory is configured to store a computer program, and the processor is configured to call and execute the computer program stored in the memory to perform the method of any one of the second to third aspects or their respective implementations.

[0017] In a ninth aspect, a chip is provided for implementing the method described in any one of the first to third aspects or their respective implementations. Specifically, the chip includes a processor configured to retrieve and execute a computer program from a memory, causing a device equipped with the chip to perform the method described in any one of the first to third aspects or their respective implementations.

[0018] In a tenth aspect, a computer-readable storage medium is provided for storing a computer program, which enables a computer to execute the method of any one of the first to third aspects or their respective implementations.

[0019] In an eleventh aspect, a computer program product is provided, comprising computer program instructions, wherein the computer program instructions enable a computer to execute the method of any one of the first to third aspects or their respective implementations.

[0020] In the twelfth aspect, a computer program is provided, which, when executed on a computer, enables the computer to execute the method in any one of the first to third aspects or its respective implementations.

[0021] Through the above technical solution, the network device can perform process measurement based on the signal sent by the AMP device, thereby achieving mobility management of the AMP device. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] FIG1 is a schematic diagram of a communication system architecture provided in an embodiment of the present application.

[0023] FIG2 is a schematic diagram of a zero-power communication system according to an example of the present application.

[0024] FIG3 is a schematic diagram of energy harvesting according to an embodiment of the present application.

[0025] FIG4 is a schematic diagram of backscatter communication according to an embodiment of the present application.

[0026] FIG5 is a circuit diagram of resistive load modulation according to an embodiment of the present application.

[0027] FIG6 is a schematic diagram of a wireless communication method provided according to an embodiment of the present application.

[0028] FIG7 is a schematic diagram of a method for sending a first signal provided in an embodiment of the present application.

[0029] FIG8 is a schematic diagram of another method for sending a first signal provided in an embodiment of the present application.

[0030] FIG9 is a schematic diagram of another method for sending a first signal provided in an embodiment of the present application.

[0031] FIG10 is a schematic diagram of another method for sending a first signal provided in an embodiment of the present application.

[0032] FIG11 is a schematic interaction diagram of a wireless communication method provided in an embodiment of the present application.

[0033] FIG12 is a schematic interaction diagram of a wireless communication method provided in an embodiment of the present application.

[0034] FIG13 is a schematic block diagram of an environmental energy AMP device provided according to an embodiment of the present application.

[0035] FIG14 is a schematic block diagram of a network device provided according to an embodiment of the present application.

[0036] Figure 15 is a schematic block diagram of another network device provided according to an embodiment of the present application.

[0037] FIG16 is a schematic block diagram of a communication device provided according to an embodiment of the present application.

[0038] FIG17 is a schematic block diagram of a chip provided according to an embodiment of the present application.

[0039] Figure 18 is a schematic block diagram of a communication system provided according to an embodiment of the present application. DETAILED DESCRIPTION

[0040] The following will describe the technical solutions in the embodiments of this application in conjunction with the drawings in the embodiments of this application. Obviously, the embodiments described are part of the embodiments of this application, not all of the embodiments. With respect to the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0041] The technical solutions of the embodiments of the present application can be applied to various communication systems, such as: Global System of Mobile communication (GSM) system, Code Division Multiple Access (CDMA) system, Wideband Code Division Multiple Access (WCDMA) system, General Packet Radio Service (GPRS), Long Term Evolution (LTE) system, Advanced Long Term Evolution (LTE-A) system, New Radio (NR) system, NR system evolution system, LTE on unlicensed spectrum (LTE-U) system, NR on unlicensed spectrum (NR-U) system, Non-Terrestrial Networks (NTN) system, Universal Mobile Telecommunication System (UMTS), Wireless Local Area Networks (WLAN), Wireless Fidelity (Wireless Fidelity) system. Fidelity, WiFi), fifth-generation communication (5th-Generation, 5G) system, cellular Internet of Things system, cellular passive Internet of Things system or other communication systems, etc.

[0042] Generally speaking, traditional communication systems support a limited number of connections and are easy to implement. However, with the development of communication technology, mobile communication systems will not only support traditional communications, but will also support, for example, device-to-device (D2D) communication, machine-to-machine (M2M) communication, machine-type communication (MTC), vehicle-to-vehicle (V2V) communication, or vehicle-to-everything (V2X) communication, etc. The embodiments of the present application can also be applied to these communication systems.

[0043] Optionally, the communication system in the embodiment of the present application can be applied to a carrier aggregation (CA) scenario, a dual connectivity (DC) scenario, or a standalone (SA) networking scenario.

[0044] Optionally, the communication system in the embodiment of the present application can be applied to an unlicensed spectrum, where the unlicensed spectrum can also be considered as a shared spectrum; or, the communication system in the embodiment of the present application can also be applied to an authorized spectrum, where the authorized spectrum can also be considered as an unshared spectrum.

[0045] The embodiments of the present application describe various embodiments in conjunction with network devices and terminal devices, wherein the terminal device may also be referred to as user equipment (UE), access terminal, user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent or user device, etc.

[0046] In an embodiment of the present application, the network device may be a device for communicating with a mobile device. The network device may be an access point (AP) in WLAN, a base station (BTS) in GSM or CDMA, a base station (NodeB, NB) in WCDMA, an evolved base station (eNB or eNodeB) in LTE, or a relay station or access point, or a vehicle-mounted device, a wearable device, and a network device (gNB) in an NR network, or a network device in a cellular Internet of Things, or a network device in a cellular passive Internet of Things, or a network device in a future evolved PLMN network or a network device in an NTN network, or a network device in a zero-power communication system, such as a reader / writer of an RFID system.

[0047] As an example and not a limitation, in an embodiment of the present application, the network device may have a mobile feature, for example, the network device may be a mobile device. Alternatively, the network device may be a satellite or a balloon station. For example, the satellite may be a low earth orbit (LEO) satellite, a medium earth orbit (MEO) satellite, a geostationary earth orbit (GEO) satellite, a high elliptical orbit (HEO) satellite, etc. Optionally, the network device may also be a base station set up in a location such as land or water.

[0048] In an embodiment of the present application, the network device can provide services for a cell, and the terminal device communicates with the network device through the transmission resources used by the cell (for example, frequency domain resources, or spectrum resources). The cell can be a cell corresponding to the network device (for example, a base station). The cell can belong to a macro base station or a base station corresponding to a small cell. The small cells here may include: metro cells, micro cells, pico cells, femto cells, etc. These small cells have the characteristics of small coverage and low transmission power, and are suitable for providing high-speed data transmission services.

[0049] The terminal device can be a station (STATION, ST) in a WLAN, a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA) device, a handheld device with wireless communication capabilities, a computing device or other processing device connected to a wireless modem, a vehicle-mounted device, a wearable device, a next-generation communication system such as a terminal device in an NR network, or a terminal device in a future evolved Public Land Mobile Network (PLMN) network, a terminal device in a cellular Internet of Things, a terminal device in a cellular passive Internet of Things, or a zero-power device, such as an electronic tag in an RFID system.

[0050] In an embodiment of the present application, the terminal device can be deployed on land, including indoors or outdoors, handheld, wearable or vehicle-mounted; it can also be deployed on the water surface (such as ships, etc.); it can also be deployed in the air (such as airplanes, balloons and satellites, etc.).

[0051] In an embodiment of the present application, the terminal device may be a mobile phone, a tablet computer, a computer with wireless transceiver function, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal device in industrial control, a wireless terminal device in self-driving, a wireless terminal device in remote medical, a wireless terminal device in a smart grid, a wireless terminal device in transportation safety, a wireless terminal device in a smart city, or a wireless terminal device in a smart home, etc.

[0052] As an example and not a limitation, in the embodiment of the present application, the terminal device may also be a wearable device. Wearable devices may also be called wearable smart devices, which are a general term for wearable devices that are intelligently designed and developed using wearable technology for daily wear, such as glasses, gloves, watches, clothing, and shoes. A wearable device is a portable device that is worn directly on the body or integrated into the user's clothes or accessories. Wearable devices are not only hardware devices, but also achieve powerful functions through software support, data interaction, and cloud interaction. Broadly speaking, wearable smart devices include those that are fully functional, large in size, and can achieve complete or partial functions without relying on smartphones, such as smart watches or smart glasses, as well as those that only focus on a certain type of application function and need to be used in conjunction with other devices such as smartphones, such as various smart bracelets and smart jewelry for vital sign monitoring.

[0053] For example, a communication system 100 used in an embodiment of the present application is shown in FIG1 . The communication system 100 may include a network device 110, which may be a device that communicates with a terminal device 120 (or a communication terminal or terminal). The network device 110 may provide communication coverage for a specific geographic area and may communicate with terminal devices within the coverage area.

[0054] FIG1 exemplarily shows a network device and two terminal devices. Optionally, the communication system 100 may include multiple network devices and each network device may include other numbers of terminal devices within its coverage area, which is not limited in this embodiment of the present application.

[0055] Optionally, the communication system 100 may further include other network entities such as a network controller and a mobility management entity, which is not limited in the embodiment of the present application.

[0056] It should be understood that in the embodiments of the present application, a device having a communication function in a network / system may be referred to as a communication device. Taking the communication system 100 shown in FIG1 as an example, the communication device may include a network device 110 and a terminal device 120 having a communication function. The network device 110 and the terminal device 120 may be the specific devices described above and will not be described in detail here. The communication device may also include other devices in the communication system 100, such as a network controller, a mobility management entity, and other network entities, which are not limited in the embodiments of the present application.

[0057] It should be understood that the terms "system" and "network" are often used interchangeably herein. The term "and / or" is simply a description of an association between related objects, indicating that three possible relationships exist. For example, "A and / or B" can represent: A exists alone, A and B exist simultaneously, or B exists alone. Furthermore, the character " / " generally indicates that the related objects are in an "or" relationship.

[0058] It should be understood that the "indication" mentioned in the embodiments of this application can be a direct indication, an indirect indication, or an indication of an association. For example, "A indicates B" can mean that A directly indicates B, for example, B can be obtained through A; it can also mean that A indirectly indicates B, for example, A indicates C, and B can be obtained through C; it can also mean that there is an association between A and B.

[0059] In the description of the embodiments of the present application, the term "corresponding" may indicate a direct or indirect correspondence between the two, or an association relationship between the two, or a relationship between indication and being indicated, configuration and being configured, etc.

[0060] In the embodiments of the present application, "pre-defined" may be implemented by pre-storing corresponding codes, tables, or other methods that can be used to indicate relevant information in a device (e.g., a terminal device or a network device). The present application does not limit the specific implementation method. For example, pre-defined may refer to information defined in a protocol.

[0061] In the embodiments of the present application, the "protocol" may refer to a standard protocol in the communication field, for example, it may include an LTE protocol, an NR protocol, and related protocols used in future communication systems, and this application does not limit this.

[0062] To facilitate understanding of the technical solutions of the embodiments of the present application, the relevant technologies of the present application are explained.

[0063] 1. Zero-power communication

[0064] The key technologies of zero-power communication include energy harvesting, backscatter communication and low-power technology.

[0065] As shown in Figure 2, a typical zero-power communication system (such as an RFID system) includes a network device (such as an RFID system reader) and a zero-power device (such as an electronic tag). The network device is used to send wireless power supply signals and downlink communication signals to the zero-power device and receive backscattered signals from the zero-power device. A basic zero-power device includes an energy harvesting module, a backscatter communication module, and a low-power computing module. In addition, the zero-power device may also have a memory or sensor for storing some basic information (such as item identification, etc.) or sensor data such as ambient temperature and humidity.

[0066] For example, the energy harvesting module can collect energy carried by radio waves in space (Figure 2 shows radio waves emitted by network devices) to drive the low-power computing module of the zero-power device and implement backscatter communication. After obtaining energy, the zero-power device can receive control commands from the network device and send data to the network device based on control signaling using backscattering. The data sent can be data stored in the zero-power device itself (such as an identity identifier or pre-written information, such as the product's production date, brand, manufacturer, etc.). The zero-power device can also be loaded with various sensors, so that the data collected by various sensors can be reported based on the zero-power mechanism.

[0067] The following describes the key technologies in zero-power communication.

[0068] 1. RF Power Harvesting

[0069] As shown in Figure 3, the RF energy harvesting module uses the principle of electromagnetic induction to harvest electromagnetic wave energy from space, thereby obtaining the energy needed to operate zero-power devices. This energy is used to drive low-power demodulation and modulation modules, sensors, and memory readout. Therefore, zero-power devices do not require traditional batteries.

[0070] 2. Back Scattering

[0071] As shown in Figure 4, a zero-power device receives a carrier signal sent by a network device, modulates it, loads the information to be transmitted, and radiates the modulated signal from the antenna. This information transmission process is called backscatter communication. Backscatter and load modulation are closely related. Load modulation achieves this by adjusting and controlling the circuit parameters of the zero-power device's oscillator circuit according to the data stream's rhythm, causing parameters such as the zero-power device's impedance to change accordingly. Load modulation techniques primarily include resistive load modulation and capacitive load modulation. In resistive load modulation, a resistor is connected in parallel with the load, which is turned on or off based on the binary data stream, as shown in Figure 5. The switching of the resistor causes a change in the circuit voltage, thus implementing amplitude-shifted keying (ASK) modulation. This modulation and transmission is achieved by adjusting the amplitude of the zero-power device's backscattered signal. Similarly, in capacitive load modulation, the switching of the capacitor changes the circuit's resonant frequency, enabling frequency-shifted keying (FSK) modulation. This modulation and transmission is achieved by adjusting the operating frequency of the zero-power device's backscattered signal.

[0072] It can be seen that the zero-power device uses load modulation to modulate the incoming signal, thereby realizing the backscatter communication process. Therefore, the zero-power device has significant advantages:

[0073] (1) It does not actively transmit signals, so it does not require complex RF links, such as PA, RF filters, etc.

[0074] (2) There is no need to actively generate high-frequency signals, so no high-frequency crystal oscillator is required;

[0075] (3) With the help of backscatter communication, terminal signal transmission does not need to consume the terminal's own energy.

[0076] 3. Coding technology

[0077] Data transmitted by zero-power devices can use various codes to represent binary "1s" and "0s." RFID systems typically use one of the following encoding methods: non-return-to-zero (NRZ), Manchester, unipolar return-to-zero, differential bi-phase (DBP), differential, pulse interval encoding (PIE), bidirectional space encoding (FMO), Miller, and differential encoding. In simple terms, different encoding techniques use different pulse signals to represent 0s and 1s.

[0078] In some scenarios, based on the energy source and usage of zero-power devices, zero-power devices can be divided into the following types:

[0079] 1. Passive zero-power devices

[0080] Zero-power devices (such as electronic tags in RFID systems) do not require internal batteries. When a zero-power device is close to a network device (such as an RFID reader), it is within the near-field radiation generated by the network device's antenna. Consequently, the zero-power device's antenna generates an induced current through electromagnetic induction, which drives the device's low-power chip circuitry. This enables forward link signal demodulation and reverse link (or reflection link) signal modulation. For backscatter links, the zero-power device uses backscattering to transmit signals.

[0081] It can be seen that the passive zero-power device does not require a built-in battery to drive either the forward link or the reverse link, and is a truly zero-power device.

[0082] Passive zero-power devices do not require batteries, and the RF circuit and baseband circuit are very simple. For example, they do not require low-noise amplifiers (LNAs), power amplifiers (PAs), crystal oscillators, analog-to-digital converters (ADCs), and other devices. Therefore, they have many advantages such as small size, light weight, very low price, and long service life.

[0083] Passive zero-power terminals can also support other energy collection methods. By collecting energy from the environment (such as light energy, thermal energy, kinetic energy, mechanical energy, etc.), they can obtain energy for driving circuits and support terminal devices to communicate.

[0084] 2. Semi-passive zero-power devices

[0085] Semi-passive zero-power devices do not have conventional batteries installed themselves, but can use RF energy harvesting modules to harvest radio wave energy or use energy harvesting modules to harvest energy from the environment (such as solar energy, thermal energy, mechanical vibration energy, etc.), and store the harvested energy in an energy storage unit (such as a capacitor). After the energy storage unit obtains energy, it can drive the low-power chip circuit of the zero-power device. It can realize tasks such as demodulation of forward link signals and modulation of reverse link signals. For backscatter links, zero-power devices use backscatter implementation to transmit signals. Alternatively, based on the harvested energy, zero-power devices can use low-power transmitters for active transmission communication.

[0086] It can be seen that the semi-passive zero-power device does not require a built-in battery to drive either the forward link or the reverse link. Although it uses energy stored in capacitors during operation, the energy comes from the radio energy collected by the energy harvesting module. Therefore, it is also a truly zero-power device.

[0087] Semi-passive zero-power devices inherit many advantages of passive zero-power devices, so they have many advantages such as small size, light weight, very low price, and long service life.

[0088] 3. Active zero-power devices

[0089] In some scenarios, zero-power devices can also be active zero-power devices, which can have built-in batteries. The batteries power the low-power chip circuitry in these devices, enabling forward link signal demodulation and reverse link signal modulation. However, for backscatter links, zero-power devices use backscattering to transmit signals. Therefore, the zero-power nature of these devices lies primarily in the fact that reverse link signal transmission does not require the terminal's own power, but rather utilizes backscattering.

[0090] Active zero-power terminals have built-in batteries that power the RFID chip, increasing their read and write distance and improving communication reliability. Therefore, they are suitable for scenarios with relatively high requirements for communication distance and read latency.

[0091] In some scenarios, zero-power devices can be categorized as follows based on transmitter type:

[0092] 1) Zero-power devices based on backscattering

[0093] These zero-power devices use the aforementioned backscattering method to transmit uplink data. These devices lack an active transmitter, only a backscattering transmitter. Therefore, when these zero-power devices transmit data, they require network equipment to provide a carrier, which they then use to perform backscattering to achieve data transmission.

[0094] 2) Zero-power devices based on active transmitters

[0095] This type of zero-power device uses an active transmitter with active transmission capabilities for uplink data transmission. Therefore, when sending data, this type of zero-power device can use its own active transmitter to send data without the need for network equipment to provide a carrier. Active transmitters suitable for zero-power devices can include ultra-low-power ASK and ultra-low-power FSK transmitters. When transmitting a 100uW signal, the overall power consumption can be reduced to 400-600uW.

[0096] 3) Zero-power devices with both backscatter transmitters and active transmitters

[0097] These zero-power devices can support both backscatter and active transmitters. They can determine which signal transmission method to use, namely, active or backscatter, based on different conditions (such as battery life and available ambient energy) or based on network device scheduling.

[0098] With the rapid development of the Internet of Things, existing IoT communication technologies can no longer meet the IoT communication needs in many scenarios, such as:

[0099] 1. Harsh communication environment

[0100] Certain IoT scenarios may face extreme environments such as high temperature, extremely low temperature, high humidity, high voltage, high radiation, or high-speed movement. Examples include ultra-high voltage substations, high-speed train track monitoring, environmental monitoring in high-altitude cold regions, and industrial production lines. In these scenarios, existing IoT terminals will not function due to the operating environment limitations of conventional power supplies. Furthermore, extreme operating environments are not conducive to IoT maintenance, such as battery replacement.

[0101] 2. Demand for extremely small terminal form factors

[0102] Certain IoT communication scenarios, such as food traceability, commodity distribution, and smart wearables, require terminals to be extremely small for ease of use. For example, IoT terminals used for commodity management in the distribution process often take the form of electronic tags, embedded in product packaging in a very compact form factor. Another example is lightweight wearable devices that can meet user needs while improving the user experience.

[0103] 3. Extremely low-cost IoT communication requirements

[0104] Many IoT communication scenarios require IoT terminals to be sufficiently affordable to enhance their competitiveness compared to alternative technologies. For example, in logistics or warehousing, to facilitate the management of large quantities of circulating items, IoT terminals can be attached to each item. Communication between the terminal and the logistics network enables precise management of the entire logistics process and lifecycle. These scenarios require IoT terminals to be competitively priced.

[0105] Therefore, in order to cover these unmet IoT communication needs, cellular networks also need to develop ultra-low-cost, extremely small-size, battery-free / maintenance-free IoT, and zero-power IoT can just meet this need.

[0106] The zero-power Internet of Things (IoT) can also be referred to as the ambient power enabled IoT (Ambient IoT or AMP IoT). Zero-power devices are also called Ambient IoT devices or AMP IoT devices. Ambient IoT devices can refer to IoT devices that use various ambient energies, such as radio frequency energy, light energy, solar energy, thermal energy, and mechanical energy. These devices can have no energy storage capacity or very limited energy storage capacity, such as using capacitors with a capacity of tens of microfarads.

[0107] Ambient IoT can be used in at least four scenarios:

[0108] 1. Object recognition, such as logistics, production line product management, and supply chain management;

[0109] 2. Environmental monitoring, such as temperature, humidity, and harmful gas monitoring of the working environment and natural environment;

[0110] 3. Positioning, such as indoor positioning, intelligent object search, production line item positioning, etc.

[0111] 4. Intelligent control, such as intelligent control of various electrical appliances in smart homes (turning on and off air conditioners, adjusting temperature), and intelligent control of various facilities in agricultural greenhouses (automatic irrigation and fertilization).

[0112] 2. Cellular Passive IoT

[0113] As 5G industry applications expand, the types of connected objects and application scenarios will increase, placing higher demands on the cost and power consumption of communication terminals. The application of battery-free, low-cost passive IoT devices has become a key technology for cellular IoT, expanding the types and number of terminals connected to 5G networks and truly realizing the interconnection of everything. Passive IoT devices can be based on zero-power communication technologies, such as RFID, and can be extended to suit cellular IoT.

[0114] To facilitate understanding of the embodiments of the present application, the energy supply signal, scheduling signal and carrier signal related to zero-power communication are explained.

[0115] 1. Energy supply signal

[0116] The energy supply signal is the energy source for the zero-power device to harvest energy.

[0117] From the perspective of energy supply signal carriers, it can be base stations, smart phones, smart gateways, charging stations, micro base stations, etc.

[0118] In terms of frequency band, the frequency band of radio waves used for power supply can be low frequency, medium frequency, high frequency, etc.

[0119] In terms of waveform, the radio waves used for power supply can be sine waves, square waves, triangle waves, pulses, rectangular waves, etc.

[0120] In addition, the power supply signal can be a continuous wave or a discontinuous wave (ie, a certain period of interruption is allowed).

[0121] Optionally, the energy supply signal can be an existing signal in the 3GPP standard, such as a sounding reference signal (SRS), a physical uplink shared channel (PUSCH), a physical random access channel (PRACH), a physical uplink control channel (PUCCH), a physical downlink control channel (PDCCH), a physical downlink shared channel (PDSCH), a physical broadcast channel (PBCH), etc., or it can be a WiFi signal or a Bluetooth signal.

[0122] Optionally, the energy supply signal may also be implemented by adding a new signal, for example, adding a signal dedicated to energy supply.

[0123] 2. Trigger signal or scheduling signal

[0124] The trigger signal is used to trigger or schedule the zero-power device to transmit data.

[0125] From the perspective of trigger signal carrier, it can be a base station, smart phone, smart gateway, etc.

[0126] In terms of frequency band, the radio waves used for triggering or scheduling can be low frequency, medium frequency, high frequency, etc.

[0127] In terms of waveform, the radio wave used for triggering or scheduling can be a sine wave, square wave, triangle wave, pulse, rectangular wave, etc.

[0128] In addition, the trigger signal can be a continuous wave or a discontinuous wave (ie, a certain period of interruption is allowed).

[0129] Optionally, the trigger signal may be an existing signal in the 3GPP standard, such as SRS, PUSCH, PRACH, PUCCH, PDCCH, PDSCH, PBCH, or a WIFI signal or a Bluetooth signal.

[0130] Optionally, the trigger signal may also be implemented by adding a new signal, for example, adding a signal dedicated to triggering or scheduling.

[0131] 3. Carrier signal

[0132] The carrier signal is used by the zero-power device to generate a backscatter signal. For example, the zero-power device may modulate the received carrier signal according to the information to be sent to form a backscatter signal.

[0133] From the perspective of carrier signal carrier, it can be a base station, smart phone, smart gateway, etc.

[0134] In terms of frequency band, the radio waves used as carrier signals can be low frequency, medium frequency, high frequency, etc.

[0135] In terms of waveform, the radio wave used as the carrier signal can be a sine wave, square wave, triangle wave, pulse, rectangular wave, etc.

[0136] In addition, the carrier signal can be a continuous wave or a discontinuous wave (ie, a certain period of interruption is allowed).

[0137] Optionally, the carrier signal may be an existing signal in the 3GPP standard, such as SRS, PUSCH, PRACH, PUCCH, PDCCH, PDSCH, PBCH, or a WIFI signal or a Bluetooth signal.

[0138] Optionally, the carrier signal may also be implemented by adding a new signal, for example, adding a carrier signal dedicated to generating a backscatter signal.

[0139] It should be noted that in the embodiment of the present application, the power supply signal, the scheduling signal and the carrier signal can be the same signal, or they can be different signals. For example, the power supply signal can be used as a carrier signal, and the scheduling signal can also be used as a carrier signal, etc.

[0140] In a cellular system, mobility management can be performed according to the status of the terminal device. For example, a cell selection or reselection process can be performed for a terminal device in the Radio Resource Control (RRC) idle (RRC_IDLE) state or the RRC inactive (RRC_INACTIVE) state, and a cell switching process can be performed for a terminal device in the RRC connected (RRC_CONNECTED) state.

[0141] Zero-power devices enable high-density and large-scale deployment at a low cost. Due to their maintenance-free and battery-free nature, they have enormous potential for application in industrial sensor networks, smart homes, smart agriculture, logistics and warehousing, smart wearables, and healthcare. Zero-power devices can be combined with sensor equipment for environmental monitoring, hazard warnings, and alarms.

[0142] Due to the characteristics of zero-power devices such as maintenance-free, battery-free, and low cost, traditional mobility management methods cannot meet the needs of zero-power devices considering high-density and large-scale deployment. Therefore, it is necessary to design a mobility management method for zero-power devices.

[0143] To facilitate understanding of the technical solutions of the embodiments of the present application, the technical solutions of the present application are described in detail below through specific embodiments. The following related technologies can be combined with the technical solutions of the embodiments of the present application as optional solutions, and they all fall within the scope of protection of the embodiments of the present application. The embodiments of the present application include at least part of the following contents.

[0144] FIG6 is a schematic interaction diagram of a wireless communication method 200 according to an embodiment of the present application. As shown in FIG6 , the method 200 includes the following contents:

[0145] S210, the environmental energy AMP device sends a first signal.

[0146] Correspondingly, the network device receives the first signal and performs measurement on the first signal.

[0147] The network device measures the first signal to determine the target network device to which the AMP device is to access or switch.

[0148] In some embodiments, the network device may be a base station in a cellular communication system, such as a gNB in ​​an NR system, or an AP in a WIFI system, etc., which is not limited in this application.

[0149] In an embodiment of the present application, an ambient energy AMP device or an ambient energy Internet of Things device (AMP IoT device or Ambient IoT device), a zero-power device, or a zero-power terminal.

[0150] In some embodiments, an AMP device may be a type of device defined based on characteristics such as device complexity, energy source, communication method, and waveform used.

[0151] For example, the AMP device may be a device that communicates based on environmental energy. For example, the AMP device uses environmental energy such as wireless radio frequency energy, light energy, solar energy, thermal energy, and mechanical energy to obtain energy for communication.

[0152] For another example, the AMP device may be a device of low complexity or a device that uses a new waveform, for example, a device that uses a low-order modulation method or a simple waveform or a signal with a smaller bandwidth for communication.

[0153] For another example, the AMP device may be a type of device that supports backscatter communication.

[0154] In some embodiments, the AMP device may also support active transmission communication.

[0155] In some embodiments, the first signal may be sent in a backscattering manner or an active transmission manner.

[0156] In some embodiments, the first signal may be also called a reference signal, an uplink reference signal.

[0157] It should be understood that the mobility management method provided in the embodiments of the present application can be applied to the mobility management of AMP devices, or can also be applied to the mobility management of traditional terminals, and the present application does not limit this.

[0158] Optionally, the mobility management method provided in the embodiment of the present application may be applicable to a scenario where the uplink and downlink are symmetrical, that is, the link quality of the uplink and downlink are relatively consistent.

[0159] In some embodiments, multiple network devices may perform measurements on the first signal sent by the AMP device, and the target network device may be determined based on the measurement results of the multiple network devices on the first signal.

[0160] For example, the target network device is the network device corresponding to the highest measurement result among the measurement results of multiple network devices (or the network device with the best signal quality), or the network device whose measurement result meets the measurement result threshold (the signal quality meets the signal quality threshold), for example, the network device whose measurement result is greater than or equal to the measurement result threshold.

[0161] In some embodiments, the measurement result of the first signal may include, but is not limited to, at least one of the following:

[0162] Reference Signal Receiving Power (RSRP), Reference Signal Receiving Quality (RSRQ), Signal to Interference plus Noise Ratio (SINR), Received Signal Strength Indication (RSSI).

[0163] In some embodiments, the first signal is sent via broadcast or unicast.

[0164] For example, the AMP device sends a first signal, and multiple network devices measure the first signal.

[0165] For another example, the AMP device sends a first signal to each of the multiple network devices, and each network device only measures the first signal sent by the AMP device to itself.

[0166] It should be understood that the present application does not limit the energy source of the AMP device, which may come from, for example, radio frequency energy, light energy, solar energy, thermal energy, mechanical energy, etc.

[0167] In some specific embodiments, the AMP device obtains energy through a power supply signal, which may be provided by a network device, or by a dedicated power supply device or signal source. For example, the power supply device or signal source may send a power supply signal periodically or continuously.

[0168] In some embodiments, the first signal is sent by active transmission.

[0169] For example, an AMP device that supports active transmission may send the first signal in an active transmission manner.

[0170] In some other embodiments, the first signal is sent via backscattering.

[0171] For example, the AMP device may backscatter the carrier signal to send the first signal. Specifically, for example, the AMP device may perform amplitude modulation, phase adjustment, or frequency modulation on the carrier to obtain the first signal.

[0172] It should be understood that the present application does not limit the source of the carrier signal used for backscattering. For example, the carrier signal may be provided by a network device, or it may be provided by a dedicated carrier transmitting device or signal source. For example, the carrier transmitting device or signal source may periodically or continuously transmit the carrier signal.

[0173] In some embodiments, the dedicated energy supply device and the dedicated carrier transmission device may be the same device or different devices, which is not limited in this application.

[0174] In some embodiments, when the first signal is sent in a unicast manner, the carrier signals corresponding to the first signals sent to different network devices may be the same carrier signal, or may be different carrier signals.

[0175] In some embodiments, when the first signal is sent in a unicast manner, the frequencies of the first signals sent to different network devices may be the same, or may be different.

[0176] In some embodiments, when the first signal is sent in a unicast manner, the transmission power of the first signal sent to different network devices may be the same, or may be different.

[0177] In some embodiments, when the transmission power of the first signal sent by the AMP device to different network devices is the same, the target network device can be determined directly based on the comparison of the measurement results of the first signal by the network device. When the transmission power of the first signal sent by the AMP device to different network devices is different, the AMP device needs to notify the network device side of the information related to the transmission power of the first signal so that the network device can compensate and calibrate the measurement results, and then determine the target network device based on the calibrated measurement results to ensure the accuracy of the selected target network device.

[0178] In some embodiments, when the first signal is sent in a unicast manner, the powers of carrier signals corresponding to the first signal sent to different network devices (eg, provided by different network devices) may be the same, or may be different.

[0179] Assuming that the energy loss of the AMP device during the backscattering process is relatively constant, the energy value of the first signal measured by the network device = the transmission energy of the carrier signal - 2 × path loss energy - backscattering loss. Among them, the path loss energy represents the one-way path loss between the network device and the AMP device, and the backscattering loss may refer to the energy loss of the AMP device performing backscattering. When the power of the carrier signals sent by different network devices is the same, the energy value of the first signal measured by the network device can be directly compared to determine the quality of the link between the network device and the AMP device. When the power of the carrier signals sent by different network devices is different, the energy value of the first signal measured by the network device needs to be compensated and calibrated according to the different transmission energies before comparison.

[0180] Figure 7 is a schematic diagram of a method for transmitting a first signal provided in an embodiment of the present application. In the example of Figure 7, the first signal is transmitted via broadcast, and the carrier signal of the first signal can be provided by an independent signal source. The AMP device can backscatter the carrier signal sent by the independent signal source and broadcast the first signal to different network devices.

[0181] Figure 8 is a schematic diagram of another method for transmitting a first signal according to an embodiment of the present application. The first signal in Figure 8 is also transmitted via broadcast, and the difference from Figure 7 is that the carrier signal of the first signal is provided by a network device.

[0182] It should be understood that FIG7 and FIG8 are only used to illustrate the broadcasting of the first signal by backscattering. Alternatively, the AMP device may also broadcast the first signal by active transmission, which is not limited in this application.

[0183] FIG9 is a schematic diagram of another method for transmitting a first signal provided in an embodiment of the present application. In the example of FIG9 , the first signal is transmitted via unicast. The carrier signal of the first signal may be provided by an independent signal source. The AMP device may backscatter the carrier signal transmitted by the independent signal source and unicast the first signal to different network devices.

[0184] Figure 10 is a schematic diagram of another method for transmitting a first signal provided in an embodiment of the present application. The first signal in Figure 10 is also transmitted via unicast, and differs from Figure 9 in that the carrier signal of the first signal is provided by the network device. For example, the AMP device uses the signal transmitted by network device 1 to perform backscattering to unicast the first signal to network device 1, uses the signal transmitted by network device 2 to perform backscattering to unicast the first signal to network device 2, and uses the signal transmitted by network device 3 to perform backscattering to unicast the first signal to network device 3.

[0185] It should be understood that in the example of Figure 10, the AMP device can also use the same carrier signal for backscattering to unicast the first signal to different network devices, for example, using the signal sent by network device 1 (or network device 2 or network device 3) for backscattering to unicast the first signal to network device 1, network device 2 and network device 3.

[0186] It should be understood that FIG9 and FIG10 are only used to illustrate the example of unicasting the first signal by backscattering. Alternatively, the AMP device may also unicast the first signal by active transmission, which is not limited in this application.

[0187] In some embodiments, the target network device is a network device used for initial access (or initial matching, initial association, initial connection) of the AMP device.

[0188] In some embodiments, the target network device is a network device for AMP device switching.

[0189] For example, under certain conditions, the AMP device can switch from one network device to another network device, or in other words, the AMP device can reassociate from one network device to another network device.

[0190] In some embodiments, the target network device is selected by a decision node from among multiple network devices. The decision node may be one of the multiple network devices that perform measurements on the first signal, or may be a higher-level network node among the multiple network devices, or may be a newly added functional entity. For example, after performing measurements on the first signal, the multiple network devices may report the measurement results to the decision node, which may then select the target network device from among the multiple network devices.

[0191] Hereinafter, the mobility management methods of the AMP device in the initial access and handover scenarios will be described in combination with Example 1 and Example 2, respectively.

[0192] Example 1: Initial access scenario

[0193] In this embodiment 1, the first signal is used to determine the target network device to which the AMP device initially accesses.

[0194] For example, when the AMP device is just started, or when the system information of the network device has not been obtained, the technical solution in Example 1 can be used for initial access.

[0195] Optionally, in this embodiment 1, the first signal is also called an initial access signal, an initial access trigger signal, an initial access measurement signal, an uplink access signal, etc., which is not limited in this application.

[0196] Optionally, in this embodiment 1, the AMP device supports a backscatter communication mode and / or an active transmission communication mode.

[0197] In some embodiments, the resources used by the AMP device to send the first signal can be determined based on the identity information of the AMP device, which helps to avoid multiple AMP devices using the same resources to send the initial access signal.

[0198] In some embodiments, the frequency of the first signal is predefined. For example, the candidate frequency of the first signal may be one or more fixed frequency points.

[0199] In some embodiments, the frequency of the first signal is related to the frequency of the power supply signal of the AMP device.

[0200] For example, the frequency of the first signal and the frequency of the power supply signal of the AMP device have a first frequency offset.

[0201] Exemplarily, when the AMP device receives the power supply signal at the frequency point f1, it sends the first signal at the frequency point f2=f1+offset1.

[0202] In some embodiments, the physical layer portion of the first signal may include a preamble sequence and a cyclic prefix (CP).

[0203] Optionally, the preamble sequence may be used by the network device to identify the AMP device, and / or, for the network device to measure, and / or estimate, the propagation delay between the network device and the AMP device.

[0204] Optionally, the leading sequence may be determined according to identity information of the AMP device.

[0205] In some embodiments, the first signal includes at least one of the following information:

[0206] Partial or complete identity information of the AMP device;

[0207] Parameters related to determining the signal strength of the first signal (or, in other words, the link quality between the AMP device and the network device, a measurement result);

[0208] First request information, used to request sending uplink data to the network device;

[0209] Measurement-related configuration information, used by the network device to perform measurement on the first signal;

[0210] Configuration information related to measurement result processing

[0211] a response signal-related configuration of the first signal;

[0212] Selection condition information of target network device;

[0213] The second request information is used to request the establishment of an association between the AMP device and the network device, or in other words, to establish a connection between the AMP device and the network device, or is called an association request or a connection request.

[0214] In some embodiments, the identity information of the AMP device can be used by the network device to identify the AMP device, and / or used by the network device to record information of the AMP device, and / or to schedule data transmission of the AMP device.

[0215] In some embodiments, the identity information of the AMP device may be identification information of the AMP device, such as UEID.

[0216] In some embodiments, the method for determining a parameter related to the signal strength of the first signal includes:

[0217] The transmission power of the first signal and / or parameters related to the backscatter loss of the AMP device.

[0218] For example, when the first signal is sent in a unicast manner and the transmission power of the first signal sent to different network devices is different, the first signal can carry parameters related to determining the signal strength of the first signal so that the network device can calibrate and compensate the measurement results of the first signal, thereby ensuring the accuracy of the selected target network device.

[0219] In some embodiments, the first request information may be used to indicate that the AMP device has an uplink transmission requirement. Optionally, the first request information may be indicated by 1-bit information, for example, different values ​​of the 1-bit information are used to indicate whether the AMP device has an uplink transmission requirement. Exemplarily, a value of 1 indicates an uplink transmission requirement, otherwise it indicates no uplink transmission requirement.

[0220] In some embodiments, the measurement-related configuration information may indicate a configuration related to the measurement of the first signal, that is, the network device may perform measurement on the first signal according to the measurement-related configuration information.

[0221] As an example, the measurement-related configuration information may include but is not limited to at least one of the following:

[0222] a parameter for determining a measurement time for the network device to measure the first signal, such as a sending period of the first signal;

[0223] filter information used by the network device to perform measurement on the first signal.

[0224] In some embodiments, the measurement period or measurement time during which the network device measures the first signal may be an integer multiple of the transmission period of the first signal, for example, the measurement time is equal to K times the transmission period of the first signal, where K is a positive integer.

[0225] In some embodiments, when the first signal does not include measurement-related configuration information, the network device may perform measurement using a default configuration, for example, performing measurement based on a default sending period and / or default filter information of the first signal.

[0226] In some embodiments, the configuration information related to measurement result processing is used to configure a reporting method and / or a processing method for the measurement result of the first signal by multiple network devices. For example, the AMP device may instruct to report the measurement result of the first signal to a first network node, or to report the measurement result of the first signal to one of the multiple network devices, where the first network node is a higher-level network node of the multiple network devices.

[0227] In some embodiments, when the first signal does not include configuration information related to measurement result processing, the network device may use a default configuration to report or process the measurement result, for example, reporting the measurement result of the first signal to one of multiple network devices, or to the first network node.

[0228] In some embodiments, the AMP device may configure the monitoring of the response signal according to the response signal related configuration of the first signal, or the network device may send the response signal according to the response signal related configuration.

[0229] In some embodiments, the response signal-related configuration of the first signal is used to configure a time window corresponding to the response signal, for example, to configure at least one of a starting position, a time length, and a period of the time window.

[0230] In a specific implementation, the AMP device may monitor the response signal within the time window.

[0231] Correspondingly, after receiving the relevant configuration of the response signal, the network device can reply with a response signal within the time window when it needs to reply with a response signal to the AMP device.

[0232] In some embodiments, when the first signal does not include a response signal configuration for the first signal, the response signal configuration may adopt a default configuration. For example, the AMP device may default to listening for a response signal starting at a first time offset after the first signal, and the listening duration may default to the first time duration. Correspondingly, after receiving the first signal, if the network device needs to reply to a response signal, it may reply to the response signal within a time window starting at the first time offset after the first signal and lasting the first time duration.

[0233] In some embodiments, the selection condition information of the target network device includes at least one of the following information:

[0234] The target network device may include: a threshold value that a measurement result of the target network device on the first signal needs to meet; frequency information that the target network device needs to support; bandwidth information that the target network device needs to support; and data rate information that the target network device needs to support.

[0235] In some embodiments, the target network device may be a network device that satisfies at least one of the following conditions:

[0236] A measurement result of the first signal by the target network device is greater than or equal to the threshold value;

[0237] The target network device has the highest measurement result for the first signal;

[0238] The frequencies supported by network devices include those supported by AMP devices;

[0239] The bandwidth supported by the network device includes the bandwidth supported by the AMP device;

[0240] The data rates supported by the network device include the data rates supported by the AMP device.

[0241] In an embodiment of the present application, due to the limited capabilities of the AMP device, when the frequency supported by the network device includes the frequency supported by the AMP device, and / or the bandwidth supported by the network device includes the bandwidth supported by the AMP device, and / or the data rate supported by the network device includes the data rate supported by the AMP device, it can be considered that the network device supports normal data transmission after the AMP device is accessed.

[0242] Therefore, in an embodiment of the present application, when selecting the target network device for initial access, not only the link quality between the network device and the AMP device is considered, but also whether the network device supports the transmission requirements of the AMP device. For example, whether the frequency, bandwidth and data rate supported by the network device meet the requirements of the AMP device for frequency, bandwidth and data rate, which is conducive to ensuring normal data transmission after the AMP device accesses the network device.

[0243] In some embodiments of the present application, the method 200 further includes:

[0244] The AMP device obtains information related to the target network device, such as identification information of the target network device and / or system configuration information of the target network device. Optionally, the information related to the target network device may be obtained from the target network device, or may be obtained from other network devices, such as a decision node of the target network device.

[0245] In some embodiments of the present application, the method 200 further includes:

[0246] The AMP device listens for a response signal to the first signal in a first time window.

[0247] In some embodiments, the first time window can be determined based on a response signal-related configuration of the first signal, or it can be determined based on a default configuration. For example, the starting position of the first time window and the position of the first signal have a first time offset, and the length of the first time window is a predefined time length or a default time length.

[0248] In some embodiments, the response signal may be sent by the target network device.

[0249] In some embodiments, the response signal further includes at least one of the following information:

[0250] Identity information of the target network device;

[0251] Configuration information for the AMP device to send uplink data;

[0252] System configuration information of the target network device;

[0253] An association identifier between the AMP device and the target network device, such as an association ID.

[0254] In some embodiments, the target network device can estimate the propagation delay between the target network device and the AMP device based on the first signal, wherein the propagation delay or the timing advance (TA) determined based on the propagation delay can be used by the AMP device to determine the sending time of the uplink data when sending the uplink data.

[0255] In some embodiments, the estimated propagation delay or the TA determined according to the propagation delay may be carried in a response signal.

[0256] That is, the AMP device can obtain the propagation delay or the TA determined according to the propagation delay through the response signal, and further determine the sending time of the uplink data when sending uplink data.

[0257] In some embodiments, the system configuration information of the target network device may include system information broadcast by the target network device, or information carried in a beacon frame broadcast by the target network device.

[0258] In some embodiments, the configuration information for the AMP device to transmit uplink data can be used to configure the time and frequency resources for the AMP device to transmit uplink data. When the AMP device initially accesses the network device, it sends a data transmission request to the network device. Furthermore, the target network device allocates resources for data transmission to the AMP device, so that the AMP device can transmit data as soon as possible.

[0259] It should be understood that in an embodiment of the present application, the system configuration information of the target network device, the configuration information used for the AMP device to send uplink data can be obtained in the response signal, or can be obtained after the response signal, for example, by receiving a downlink message from the target network device after the response signal.

[0260] In some embodiments of the present application, the method 200 further includes:

[0261] According to whether the response signal is associated with the identity information of the AMP device (or whether the response signal is associated with the first signal), it is determined whether the network device corresponding to the response signal is the target network device.

[0262] In some embodiments, the association of the response signal with the identity information of the AMP device may include, but is not limited to:

[0263] The response signal includes part or all of the AMP device's identity information; or

[0264] The time-frequency resources of the response signal are associated with the identity information of the AMP device; or

[0265] The Radio Network Temporary Identity (RNTI) in the response signal is associated with the identity information of the AMP device; or

[0266] The response signal includes information calculated based on the AMP identity information carried in the first signal. For example, if the identity information carried in the first signal is X, the response signal includes information calculated according to the function F(X); or

[0267] The first signal carries an association request ID=Y, and the response signal may also include Y, or information calculated according to the function F(Y).

[0268] In some embodiments, the input X and output F(X) of the function F(X) are in a one-to-one mapping relationship, that is, the input X and the output F(X) are uniquely determined.

[0269] In some embodiments, when the response signal is associated with the identity information of the AMP device (which can be considered as successful monitoring), the network device corresponding to the identity information in the response signal is determined as the target network device.

[0270] Further optionally, the method 200 further includes:

[0271] The AMP device sends an acknowledgment signal of the response signal to the target network device.

[0272] At this point, it can be considered that the AMP device and the target network device are associated, or in other words, connected.

[0273] Furthermore, the AMP device sends uplink data to the target network device according to the configuration information for the AMP device to send uplink data in the response signal, and / or the AMP device receives broadcast information sent by the target network device.

[0274] In some other embodiments of the present application, the method 200 further includes:

[0275] If no response signal is received within the first time window or the received response signal is not associated with the identity information of the AMP device (in this case, the monitoring is considered to have failed), the AMP device sends a second signal, wherein the transmission power of the second signal is greater than the transmission power of the first signal and / or the resources of the second signal are different from the resources of the first signal.

[0276] That is, in the case of monitoring failure, the AMP device can increase the transmission power of the initial access signal, or change the resource of the initial access signal and send the initial access signal again.

[0277] It should be understood that in the application embodiment, the second signal and the first signal have the same function and are both initial access signals. The second signal is an initial access signal sent again when the response signal monitoring of the previous initial access signal (i.e., the first signal) fails. The network device's measurement and processing behaviors for the first signal and the second signal are consistent. The AMP device side sends the two initial access signals in a similar manner. The difference is that in order to ensure successful initial access, the signal transmission power is increased and / or different resources are used. The sending method of the second signal and the related implementation of the network device's measurement and processing of the second signal refer to the relevant description of the first signal. For the sake of brevity, they will not be repeated here.

[0278] In some embodiments, the first signal and the second signal have the same frequency.

[0279] In some embodiments, after the AMP device fails to monitor continuously for N times, it may be considered that there is no target network device that meets the conditions on the frequency point, and the AMP device may switch to other candidate frequency points to send the initial access signal.

[0280] Figure 11 shows a schematic interaction diagram of a mobility management method in an initial access scenario. As shown in Figure 11, the following steps may be included:

[0281] S301: The AMP device sends an initial access signal.

[0282] S302: The network device measures the initial access signal and evaluates and determines the target network device (ie, the serving network device).

[0283] For example, multiple network devices can report the measurement results of the initial access signal to a decision node, which selects a target network device from the multiple network devices. The decision node can be one of the multiple network devices, or a high-level network node of the multiple network devices.

[0284] Furthermore, the decision node notifies the target network device that it is the target network device of the AMP device.

[0285] For example, the decision node may send first information to the target network device, where the first information includes identity information of the AMP device and, optionally, further includes identification information of the target network device.

[0286] S303: The target network device sends a response signal to the AMP device, wherein the response signal includes identification information of the target network device. For example, the target network device sends a response signal to the AMP device after learning that it is the target network device of the AMP device.

[0287] S304, the AMP device monitors the response signal. If the response signal is received and the response signal is associated with the identity information of the AMP device, it is determined that the monitoring is successful and S305 is executed. Otherwise, S301 is executed.

[0288] S305 , the AMP device responds with a confirmation signal to the target network device.

[0289] S306, the AMP device monitors messages sent by the target network device, such as beacon frames, discovery messages, configuration information, etc.

[0290] S307: The AMP device sends uplink data according to the configuration information sent by the target network device.

[0291] In summary, through the process described in Example 1, a target network device can be selected for the AMP device. Furthermore, an association or connection can be established between the target network device and the AMP device. In this way, the AMP device only needs to monitor downlink messages sent by the target network device and then perform uplink transmission according to the configuration information indicated by the target network device.

[0292] Example 2: Network device switching scenario

[0293] In this embodiment 2, the network device currently accessed by the AMP device may be the first network device.

[0294] In the embodiment of the present application, the network device to which the AMP device is currently connected is also called a source network device, or a service network device.

[0295] In this embodiment 2, the first signal is also called an uplink reference signal or an uplink measurement signal.

[0296] In this embodiment 2, the target network device may be selected by the first network device from among multiple network devices, or may be selected by a decision node.

[0297] Optionally, in this embodiment 2, the AMP device may switch from the first network device to the second network device when at least one of the following conditions is met:

[0298] The link quality between the first network device and the AMP device is lower than a first threshold;

[0299] The link quality between the second network device and the AMP device is higher than a second threshold;

[0300] The link quality between the first network device and the AMP device is lower than the link quality between the second network device and the AMP device by a third threshold.

[0301] In some embodiments, switching the AMP device from the first network device to the second network device may include:

[0302] Disconnect the AMP device from the first network device and connect the AMP device to the second network device; or

[0303] The connection between the AMP device and the first network device is disconnected, and a connection between the AMP device and the second network device is established.

[0304] In some embodiments, the first signal is sent according to first configuration information of the first network device. That is, the source network device may indicate configuration information for sending an uplink reference signal to the AMP device.

[0305] In some embodiments, the first configuration information includes at least one of the following:

[0306] The sequence information, resource information, transmission cycle information, and transmission power information corresponding to the first signal.

[0307] In some embodiments, the first configuration information may be specific to an AMP device (ie, AMP device specific). For example, the AMP device may send a common uplink reference signal according to the first configuration information, and all network devices measure the same uplink reference signal.

[0308] In other embodiments, the first configuration information may be for the link between the AMP device and the network device (i.e., AMP device-NW specific). It can be considered that the configuration of the uplink reference signal and the link between the AMP device and the network device have a mapping relationship. For example, the uplink reference signal sequence sent by the AMP device to each network device is different. In a specific implementation, the AMP device sends different uplink reference signals to different network devices according to different configuration information. In this case, the network device only measures the uplink reference signal sent to itself.

[0309] In some embodiments, the first configuration information may be associated with an AMP device, and the network device may identify the AMP device based on different configuration information. For example, different AMP devices may correspond to different sequences, and the network device may identify different AMP devices based on the sequences. For another example, different AMP devices may use different resources to transmit uplink reference signals, and the network device may identify different AMP devices based on the resources used for uplink reference signals.

[0310] In some embodiments, the first configuration information is determined based on capabilities of the AMP device.

[0311] In some embodiments, the capabilities of the AMP device may include but are not limited to the energy collection method supported by the AMP device, the energy collection efficiency supported by the AMP device, the maximum transmission power supported by the AMP device, the signal transmission method supported by the AMP device, etc.

[0312] In some embodiments of the present application, the method 200 further includes:

[0313] The first network device sends second configuration information to at least one second network device, where the second configuration information includes the first configuration information. The at least one second network device may be another network device other than the first network device, or a neighboring network device.

[0314] That is, the source network device may notify other network devices of the uplink reference signal transmission configuration, so that the other network devices can receive and measure the uplink reference signal sent by the AMP device according to the transmission configuration.

[0315] In some embodiments, the second configuration information is sent via broadcast or unicast.

[0316] In some embodiments, the second configuration information further includes at least one of the following:

[0317] Information related to the measurement time performed by the second network device, filter information used by the second network device to perform the measurement, the association relationship between the first configuration information and the AMP device, configuration related to the processing of the measurement result of the first signal by the at least one second network device, and switching condition information of the target network device.

[0318] In some embodiments, the measurement time information of the second network device may be determined according to the transmission period of the uplink reference signal. For example, the measurement period of the second network device may be an integer multiple of the transmission period of the uplink reference signal.

[0319] In some embodiments, the configuration related to processing of the measurement result of the first signal by the at least one second network device is used to configure a reporting method and / or processing method of the measurement result of the first signal by the at least one second network device. For example, the AMP device may instruct to report the measurement result of the first signal to a second network node, or to report the measurement result of the first signal to a network device among the at least one second network device, where the second network node is a higher-level network node of the at least one second network device.

[0320] In some embodiments, when the second configuration information does not include configuration related to processing of the measurement result of the first signal by the at least one second network device, the at least one second network device may use a default configuration to report or process the measurement result.

[0321] In some embodiments, the switching condition information of the target network device includes at least one of the following information:

[0322] The measurement result of the first signal by the first network device needs to meet the threshold value, the measurement result of the first signal by the target network device needs to meet the threshold value, the frequency information that the target network device needs to support, the bandwidth information that the target network device needs to support, and the data rate information that the target network device needs to support.

[0323] In some embodiments, the switching condition information of the target network device may include at least one of the aforementioned first threshold, second threshold, and third threshold.

[0324] In some embodiments, the target network device may be a neighboring network device that satisfies at least one of the following conditions:

[0325] The link quality between the source network device and the AMP device is lower than the first threshold;

[0326] The link quality between the neighboring network device and the AMP device is higher than the second threshold;

[0327] The link quality between the source network device and the AMP device is lower than the link quality between the adjacent network device and the AMP device by a third threshold;

[0328] The frequencies supported by the neighboring network devices include the frequencies supported by the AMP devices;

[0329] The bandwidth supported by the neighboring network devices includes the bandwidth supported by the AMP device;

[0330] The data rates supported by the neighboring network devices include the data rates supported by the AMP device.

[0331] In an embodiment of the present application, due to the limited capabilities of the AMP device, when the frequency supported by the network device includes the frequency supported by the AMP device, and / or the bandwidth supported by the network device includes the bandwidth supported by the AMP device, and / or the data rate supported by the network device includes the data rate supported by the AMP device, it can be considered that the network device supports normal data transmission after the AMP device is switched.

[0332] Therefore, in an embodiment of the present application, when selecting a target network device, not only the link quality between the network device and the AMP device is considered, but also whether the network device supports the transmission requirements of the AMP device. For example, whether the frequency, bandwidth and data rate supported by the network device meet the frequency, bandwidth and data rate requirements of the AMP device, which is conducive to ensuring normal data transmission after the AMP device switches to the network device.

[0333] In some embodiments of the present application, the method 200 further includes:

[0334] The AMP device receives a first command sent by a first network device, where the first command is used to instruct the AMP device to switch to a target network device.

[0335] For example, after determining the target network device, the source network device may send a first command to the AMP device, instructing the AMP device to switch to the target network device. Further, the AMP device switches to the target network device according to the first command.

[0336] In some embodiments, the first command may include identification information of the target network device.

[0337] Since a connection or association has been established between the first network device and the AMP device, the first network device can use available resources between the first network device and the AMP device to send the first command.

[0338] In some other embodiments of the present application, the method 200 further includes:

[0339] The AMP device receives a second command sent by the target network device, where the second command is used to instruct the AMP device to switch to the target network device.

[0340] For example, after determining the target network device, the target network device may send a second command to the AMP device, instructing the AMP device to switch to the target network device. Further, the AMP device switches to the target network device according to the second command.

[0341] In some embodiments, the second command includes at least one of the following:

[0342] The identity information of the AMP device, the identification information of the target network device, and the identification information of the first network device (ie, the identification information of the currently connected network device).

[0343] In some embodiments, the first command and the second command are referred to as switching commands.

[0344] In some embodiments, the second command is sent on a dedicated resource. For example, the AMP device may monitor a switching command sent by a non-serving network device on a dedicated time-frequency resource.

[0345] In some embodiments, the method 200 further includes: the AMP device responding with confirmation information of the switching command.

[0346] For example, after receiving the switching command, the AMP device may reply with a confirmation message to the target network device or the serving network device.

[0347] Figure 12 shows a schematic interactive diagram of a mobility management method in a handover scenario. As shown in Figure 12, the following steps may be included:

[0348] S310: The first network device, namely the serving network device, sends first configuration information.

[0349] S311, the AMP device receives first configuration information.

[0350] S312: The first network device sends second configuration information to the second network device.

[0351] Correspondingly, the second network device receives the second configuration information. Specific implementations of the second configuration information and the first configuration information refer to the relevant descriptions of the aforementioned embodiments, which will not be repeated here for the sake of brevity.

[0352] S313: The AMP device sends an uplink reference signal for measurement according to the first configuration information.

[0353] S314: The first network device measures the uplink reference signal according to the first configuration information.

[0354] S315: The second network device measures the uplink reference signal according to the second configuration information.

[0355] When the signal quality of the second network device meets the switching condition (ie, the second network device can be used as the target network device), subsequent steps are performed.

[0356] S316: The source network device sends a switching command to the AMP device.

[0357] S317: The AMP device receives the switching command.

[0358] Furthermore, the AMP device disconnects from the source network device and establishes an association with the target network device.

[0359] Optionally, the process further includes: S318, the AMP device responds with confirmation information.

[0360] At this point, it can be considered that the AMP device is switched from the source network device to the target network device and is associated with the target network device.

[0361] Furthermore, it also includes:

[0362] S319, the AMP device monitors the downlink messages of the target network device, such as beacon frames, discovery messages, system messages, configuration information, etc.

[0363] S320: The AMP device sends uplink data according to the configuration information of the target network device.

[0364] In summary, through the process described in Example 2, the AMP device can be switched from the source network device to the target network device. After the switch is completed, the AMP device can switch to the target network device for data transmission. For example, instead of monitoring downlink messages from the source network device, the AMP device only needs to monitor downlink messages from the target network device and then perform uplink transmission according to the configuration information indicated by the target network device.

[0365] In summary, in embodiments of the present application, a network device can implement mobility management of an AMP device based on measurements of signals sent by the AMP device. For example, the network device can measure signals sent by the AMP device to select a network device for the AMP device to initially access, or the network device can measure signals sent by the AMP device to select a target network device for the AMP device to switch to.

[0366] The above text, in combination with Figures 6 to 12, describes in detail the method embodiment of the present application. The following text, in combination with Figures 13 to 18, describes in detail the device embodiment of the present application. It should be understood that the device embodiment and the method embodiment correspond to each other, and similar descriptions can refer to the method embodiment.

[0367] FIG13 shows a schematic block diagram of an AMP device 400 according to an embodiment of the present application. As shown in FIG13 , the AMP device 400 includes:

[0368] The communication unit 410 is configured to send a first signal, where the first signal is used by a network device to perform measurement to determine a target network device to which the AMP device is to access or switch.

[0369] In some embodiments, the target network device is determined based on measurement results of the first signal by multiple network devices.

[0370] In some embodiments, the first signal is used to determine a target network device to which the AMP device initially accesses.

[0371] In some embodiments, the frequency of the first signal is predefined, or the frequency of the first signal is related to the frequency of the power supply signal of the AMP device.

[0372] In some embodiments, a frequency point of the first signal and a frequency point of the power supply signal of the AMP device have a first frequency offset.

[0373] In some embodiments, the first signal includes at least one of the following information:

[0374] Part or all of the identity information of the AMP device;

[0375] used to determine a parameter related to the signal strength of the first signal;

[0376] First request information, used to request sending uplink data to the network device;

[0377] Measurement-related configuration information, used by the network device to perform measurement on the first signal;

[0378] Configuration information related to measurement result processing, used for multiple network devices to report and / or process the measurement results of the first signal;

[0379] a response signal related configuration of the first signal;

[0380] Selection condition information of the target network device;

[0381] The second request information is used to request to establish an association between the AMP device and the network device.

[0382] In some embodiments, the parameters used to determine the signal strength-related parameters of the first signal include the transmit power of the first signal and / or backscatter loss-related parameters of the AMP device.

[0383] In some embodiments, the measurement-related configuration information is used to configure at least one of the following:

[0384] a parameter used to determine a measurement time for the network device to measure the first signal, and filter information used by the network device to measure the first signal.

[0385] In some embodiments, the configuration information related to the measurement result processing is used to configure multiple network devices to report the measurement results of the first signal to a first network node, or to report the measurement results of the first signal to the same network device among the multiple network devices, and the first network node is a high-level network node of the multiple network devices.

[0386] In some embodiments, the response signal-related configuration of the first signal is used to configure the time length and / or period of the time window corresponding to the response signal of the first signal.

[0387] In some embodiments, the selection condition information of the target network device includes at least one of the following information:

[0388] The target network device may include: a threshold value that a measurement result of the target network device on the first signal needs to meet; frequency information that the target network device needs to support; bandwidth information that the target network device needs to support; and data rate information that the target network device needs to support.

[0389] In some embodiments, the communication unit 410 is further configured to:

[0390] A response signal to the first signal is monitored in a first time window, wherein the response signal includes identity information of the network device.

[0391] In some embodiments, the response signal further includes at least one of the following information:

[0392] Configuration information for the AMP device to send uplink data;

[0393] System configuration information of the target network device;

[0394] The association identifier between the AMP device and the target network device.

[0395] In some embodiments, the AMP device further comprises:

[0396] The processing unit is configured to determine whether the network device corresponding to the response signal is a target network device according to whether the response signal is associated with the identity information of the AMP device.

[0397] In some embodiments, when the response signal is associated with the identity information of the AMP device, the network device corresponding to the identity information in the response signal is determined as the target network device.

[0398] In some embodiments, the communication unit 410 is further configured to:

[0399] The uplink data is sent to the target network device according to the configuration information for the AMP device to send the uplink data.

[0400] In some embodiments, the communication unit 410 is further configured to:

[0401] Receive the broadcast information sent by the target network device.

[0402] In some embodiments, the communication unit 410 is further configured to:

[0403] An acknowledgment signal of the response signal is sent to the target network device.

[0404] In some embodiments, the communication unit 410 is further configured to:

[0405] When no response signal is received within the first time window or the received response signal is not associated with the identity information of the AMP device, a second signal is sent, wherein the transmission power of the second signal is greater than the transmission power of the first signal and / or the resources of the second signal are different from the resources of the first signal.

[0406] In some embodiments, the second signal is sent via broadcast or unicast.

[0407] In some embodiments, the second signal is sent by active transmission, or the second signal is sent by backscattering.

[0408] In some embodiments, when the second signal is sent by backscattering, the second signal is sent by backscattering a carrier signal, and the carrier signal is provided by a network device or a dedicated device.

[0409] In some embodiments, the network device is a first network device, the first network device is the network device to which the AMP device is currently connected, and the first signal is sent according to first configuration information of the first network device.

[0410] In some embodiments, the first configuration information includes at least one of the following:

[0411] The sequence information, resource information, period information, and transmit power information corresponding to the first signal.

[0412] In some embodiments, the first configuration information is determined based on capabilities of the AMP device.

[0413] In some embodiments, the communication unit 410 is further configured to: receive a first command sent by a first network device or a second command sent by a target network device, wherein the first command is used to instruct the AMP device to switch to the target network device, and the second command is used to instruct the AMP device to switch to the target network device;

[0414] Switch to the target network device according to the first command or the second command.

[0415] In some embodiments, the first command includes identification information of the target network device.

[0416] In some embodiments, the first command is sent using available resources between the first network device and the AMP device.

[0417] In some embodiments, the second command includes at least one of the following:

[0418] The identity information of the AMP device, the identification information of the target network device, and the identification information of the first network device.

[0419] In some embodiments, the second command is sent on dedicated resources.

[0420] In some embodiments, the communication unit 410 is further configured to reply confirmation information of the first command or the second command.

[0421] In some embodiments, the first signal is sent via broadcast or unicast.

[0422] In some embodiments, the first signal is sent by active transmission, or the first signal is sent by backscattering.

[0423] In some embodiments, when the first signal is sent by backscattering, the first signal is sent by backscattering a carrier signal, and the carrier signal is provided by a network device or a dedicated device.

[0424] Alternatively, in some embodiments, the communication unit may be a communication interface or a transceiver, or an input / output interface of a communication chip or a system on chip. The processing unit may be one or more processors.

[0425] It should be understood that the AMP device 400 according to the embodiment of the present application may correspond to the AMP device in the method embodiment of the present application, and the above-mentioned and other operations and / or functions of each unit in the AMP device 400 are respectively for realizing the corresponding processes of the AMP device in the method 200 shown in Figures 6 to 18. For the sake of brevity, they will not be repeated here.

[0426] FIG14 is a schematic block diagram of a network device according to an embodiment of the present application. The network device 500 of FIG14 includes:

[0427] The processing unit 510 is configured to measure a first signal sent by an environmental energy AMP device, and a measurement result of the first signal is used to determine a target network device to be accessed or switched by the AMP device.

[0428] In some embodiments, the target network device is determined based on measurement results of the first signal by multiple network devices.

[0429] In some embodiments, the first signal is used to determine a target network device to which the AMP device initially accesses.

[0430] In some embodiments, the frequency of the first signal is predefined, or the frequency of the first signal is related to the frequency of the power supply signal of the AMP device.

[0431] In some embodiments, a frequency point of the first signal and a frequency point of the power supply signal of the AMP device have a first frequency offset.

[0432] In some embodiments, the first signal includes at least one of the following information:

[0433] Part or all of the identity information of the AMP device;

[0434] used to determine a parameter related to the signal strength of the first signal;

[0435] First request information, used to request sending uplink data to the network device;

[0436] Measurement-related configuration information, used by the network device to perform measurement on the first signal;

[0437] Configuration information related to measurement result processing, used for multiple network devices to report and / or process the measurement results of the first signal;

[0438] a response signal related configuration of the first signal;

[0439] Selection condition information of the target network device;

[0440] The second request information is used to request to establish an association between the AMP device and the network device.

[0441] In some embodiments, the parameters used to determine the signal strength-related parameters of the first signal include the transmit power of the first signal and / or backscatter loss-related parameters of the AMP device.

[0442] In some embodiments, the measurement-related configuration information is used to configure at least one of the following:

[0443] a measurement period during which the network device measures the first signal, and filter information used by the network device to measure the first signal.

[0444] In some embodiments, the configuration information related to the measurement result processing is used to configure multiple network devices to report the measurement results of the first signal to a first network node, or to report the measurement results of the first signal to the same network device among the multiple network devices, and the first network node is a high-level network node of the multiple network devices.

[0445] In some embodiments, the response signal-related configuration of the first signal is used to configure the time length and / or period of the time window corresponding to the response signal of the first signal.

[0446] In some embodiments, the selection condition information of the target network device includes at least one of the following information:

[0447] The target network device may include: a threshold value that a measurement result of the target network device on the first signal needs to meet; frequency information that the target network device needs to support; bandwidth information that the target network device needs to support; and data rate information that the target network device needs to support.

[0448] In some embodiments, the network device further includes:

[0449] A communication unit is configured to send a response signal of the first signal to the AMP device when the network device is the target network device, wherein the response signal includes identity information of the target network device.

[0450] In some embodiments, the response signal further includes at least one of the following information:

[0451] Configuration information for the AMP device to send uplink data;

[0452] System configuration information of the target network device;

[0453] The association identifier between the AMP device and the target network device.

[0454] In some embodiments, the network device further includes:

[0455] A communication unit is configured to receive a confirmation signal of the response signal sent by the AMP device.

[0456] In some embodiments, the network device is a first network device, the first network device is a network device to which the AMP device is currently connected, and the network device further includes:

[0457] A communication unit, configured to send first configuration information to the AMP device, wherein the first signal is sent according to the first configuration information

[0458] In some embodiments, the first configuration information includes at least one of the following:

[0459] The sequence information, resource information, period information, and transmit power information corresponding to the first signal.

[0460] In some embodiments, the first configuration information is determined based on capabilities of the AMP device.

[0461] In some embodiments, the network device is a first network device, the first network device is a network device to which the AMP device is currently connected, and the network device further includes:

[0462] A communication unit is configured to send second configuration information to at least one second network device, where the second configuration information includes the first configuration information.

[0463] In some embodiments, the second configuration information further includes at least one of the following:

[0464] The association relationship between the first configuration information and the AMP device, the processing-related configuration of the at least one second network device for the measurement result of the first signal, and the switching condition information of the target network device.

[0465] In some embodiments, the switching condition information of the target network device includes at least one of the following information:

[0466] The measurement result of the first signal by the first network device needs to meet the threshold value, the measurement result of the first signal by the target network device needs to meet the threshold value, the frequency information that the target network device needs to support, the bandwidth information that the target network device needs to support, and the data rate information that the target network device needs to support.

[0467] In some embodiments, the second configuration information is sent via broadcast or unicast.

[0468] In some embodiments, the network device is a first network device, the first network device is a network device to which the AMP device is currently connected, and the network device further includes:

[0469] A communication unit is used to send a first command to the AMP device, where the first command is used to instruct the AMP device to switch to a target network device.

[0470] In some embodiments, the first command includes identification information of the target network device.

[0471] In some embodiments, the first command is sent using available resources between the first network device and the AMP device.

[0472] In some embodiments, the first network device is a target network device, and the network device further includes:

[0473] A communication unit is used to send a second command to the AMP device, where the second command is used to instruct the AMP device to switch to a target network device.

[0474] In some embodiments, the second command includes at least one of the following:

[0475] The identity information of the AMP device, the identification information of the target network device, and the identification information of the first network device, where the first network device is the network device currently connected to the AMP device.

[0476] In some embodiments, the second command is sent on dedicated resources.

[0477] In some embodiments, the first network device is a target network device, and the network device further includes:

[0478] The communication unit is configured to receive confirmation information of the second command replied by the AMP device.

[0479] In some embodiments, the first signal is sent via broadcast or unicast.

[0480] In some embodiments, the first signal is sent by active transmission, or the first signal is sent by backscattering.

[0481] In some embodiments, when the first signal is sent by backscattering, the first signal is sent by backscattering a carrier signal, and the carrier signal is provided by a network device or a dedicated device.

[0482] Alternatively, in some embodiments, the communication unit may be a communication interface or a transceiver, or an input / output interface of a communication chip or a system on chip. The processing unit may be one or more processors.

[0483] It should be understood that the network device 500 according to the embodiment of the present application may correspond to the network device in the embodiment of the method of the present application, and the above-mentioned and other operations and / or functions of each unit in the network device 500 are respectively for realizing the corresponding processes of the network device in the method 200 shown in Figures 6 to 18. For the sake of brevity, they will not be repeated here.

[0484] FIG15 is a schematic block diagram of a network device according to an embodiment of the present application. The network device 800 of FIG15 includes:

[0485] Communication unit 810 is used to receive second configuration information sent by the first network device, where the second configuration information is used to select a target network device to which the AMP device can switch the environment. The first network device is the network device to which the AMP device is currently connected, and the network device is a network device other than the first network device.

[0486] In some embodiments, the second configuration information includes first configuration information, the first configuration information is a sending configuration of a first signal of the AMP device, and the target network device is determined by measuring the first signal.

[0487] In some embodiments, the first configuration information includes at least one of the following:

[0488] The sequence information, resource information, period information, and transmission power information corresponding to the first signal.

[0489] In some embodiments, the first configuration information is determined based on capabilities of the AMP device.

[0490] In some embodiments, the network device 800 further includes:

[0491] A processing unit is used to measure a first signal sent by the AMP device according to the first configuration information, and a measurement result of the first signal is used to determine the target network device.

[0492] In some embodiments, the second configuration information further includes at least one of the following:

[0493] The association relationship between the first configuration information and the AMP device, the configuration related to the processing of the measurement result of the first signal by the second network device, and the switching condition information of the target network device.

[0494] In some embodiments, the switching condition information of the target network device includes at least one of the following information:

[0495] The measurement result of the first signal by the first network device needs to meet the threshold value, the measurement result of the first signal by the target network device needs to meet the threshold value, the frequency information that the target network device needs to support, the bandwidth information that the target network device needs to support, and the data rate information that the target network device needs to support.

[0496] In some embodiments, the second configuration information is sent via broadcast or unicast.

[0497] Alternatively, in some embodiments, the communication unit may be a communication interface or a transceiver, or an input / output interface of a communication chip or a system on chip. The processing unit may be one or more processors.

[0498] It should be understood that the network device 800 according to the embodiment of the present application may correspond to the second network device in the embodiment of the method of the present application, and the above-mentioned and other operations and / or functions of each unit in the second network device 800 are respectively for implementing the corresponding processes of the second network device in the method 200 shown in Figures 6 to 18. For the sake of brevity, they will not be repeated here.

[0499] Figure 16 is a schematic structural diagram of a communication device 600 provided in an embodiment of the present application. The communication device 600 shown in Figure 16 includes a processor 610, which can call and run a computer program from a memory to implement the method in the embodiment of the present application.

[0500] Optionally, as shown in Figure 6, the communication device 600 may further include a memory 620. The processor 610 may call and execute a computer program from the memory 620 to implement the method in the embodiment of the present application.

[0501] The memory 620 may be a separate device independent of the processor 610 , or may be integrated into the processor 610 .

[0502] Optionally, as shown in FIG16 , the communication device 600 may further include a transceiver 630 , and the processor 610 may control the transceiver 630 to communicate with other devices, specifically, to send information or data to other devices, or to receive information or data sent by other devices.

[0503] The transceiver 630 may include a transmitter and a receiver. The transceiver 630 may further include an antenna, and the number of antennas may be one or more.

[0504] Optionally, the communication device 600 may specifically be a network device in an embodiment of the present application, and the communication device 600 may implement the corresponding processes implemented by the network device in each method in the embodiment of the present application. For the sake of brevity, they will not be repeated here.

[0505] Optionally, the communication device 600 may specifically be an AMP device in an embodiment of the present application, and the communication device 600 may implement the corresponding processes implemented by the AMP device in each method in the embodiment of the present application. For the sake of brevity, they will not be repeated here.

[0506] Figure 17 is a schematic structural diagram of a chip according to an embodiment of the present application. The chip 700 shown in Figure 17 includes a processor 710, which can call and run a computer program from a memory to implement the method according to the embodiment of the present application.

[0507] Optionally, as shown in FIG17 , the chip 700 may further include a memory 720. The processor 710 may call and execute a computer program from the memory 720 to implement the method in the embodiment of the present application.

[0508] The memory 720 may be a separate device independent of the processor 710 , or may be integrated into the processor 710 .

[0509] Optionally, the chip 700 may further include an input interface 730. The processor 710 may control the input interface 730 to communicate with other devices or chips, and specifically, may obtain information or data sent by other devices or chips.

[0510] Optionally, the chip 700 may further include an output interface 740. The processor 710 may control the output interface 740 to communicate with other devices or chips, and specifically, may output information or data to other devices or chips.

[0511] Optionally, the chip can be applied to the network device in the embodiments of the present application, and the chip can implement the corresponding processes implemented by the network device in each method of the embodiments of the present application. For the sake of brevity, they will not be repeated here.

[0512] Optionally, the chip can be applied to the mobile terminal / terminal device in the embodiments of the present application, and the chip can implement the corresponding processes implemented by the mobile terminal / terminal device in the various methods of the embodiments of the present application. For the sake of brevity, they will not be repeated here.

[0513] It should be understood that the chip mentioned in the embodiments of the present application can also be called a system-level chip, a system chip, a chip system or a system-on-chip chip, etc.

[0514] FIG18 is a schematic block diagram of a communication system 900 provided in an embodiment of the present application. As shown in FIG18 , the communication system 900 includes an AMP device 910 and a network device 920 .

[0515] Among them, the AMP device 910 can be used to implement the corresponding functions implemented by the AMP device in the above method, and the network device 920 can be used to implement the corresponding functions implemented by the network device in the above method. For the sake of brevity, they will not be repeated here.

[0516] It should be understood that the processor of the embodiments of the present application may be an integrated circuit chip with signal processing capabilities. During implementation, each step of the above method embodiment can be completed by hardware integrated logic circuits in the processor or software instructions. The above processor can be a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field programmable gate array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components. The various methods, steps, and logic block diagrams disclosed in the embodiments of the present application can be implemented or executed. The general-purpose processor can be a microprocessor or any conventional processor. The steps of the method disclosed in the embodiments of the present application can be directly embodied as being executed by a hardware decoding processor, or can be executed by a combination of hardware and software modules in the decoding processor. The software module can be located in a storage medium mature in the art, such as random access memory, flash memory, read-only memory, programmable read-only memory, electrically erasable programmable memory, registers, etc. The storage medium is located in the memory, and the processor reads the information in the memory and completes the steps of the above method in combination with its hardware.

[0517] It is understood that the memory in the embodiments of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memories. Among them, the non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory may be a random access memory (RAM), which is used as an external cache. By way of example and not limitation, many forms of RAM are available, such as static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), and direct RAM bus random access memory (DR RAM). It should be noted that the memory of the systems and methods described herein is intended to include, but is not limited to, these and any other suitable types of memory.

[0518] It should be understood that the above-mentioned memories are exemplary but not restrictive. For example, the memories in the embodiments of the present application may also be static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), and direct RAM RAM (DR RAM), etc. In other words, the memories in the embodiments of the present application are intended to include, but are not limited to, these and any other suitable types of memories.

[0519] An embodiment of the present application also provides a computer-readable storage medium for storing a computer program.

[0520] Optionally, the computer-readable storage medium can be applied to the network device in the embodiments of the present application, and the computer program enables the computer to execute the corresponding processes implemented by the network device in the various methods of the embodiments of the present application. For the sake of brevity, they are not repeated here.

[0521] Optionally, the computer-readable storage medium can be applied to the AMP device in the embodiments of the present application, and the computer program enables the computer to execute the corresponding processes implemented by the AMP device in the various methods of the embodiments of the present application. For the sake of brevity, they will not be repeated here.

[0522] An embodiment of the present application also provides a computer program product, including computer program instructions.

[0523] Optionally, the computer program product can be applied to the network device in the embodiments of the present application, and the computer program instructions enable the computer to execute the corresponding processes implemented by the network device in the various methods of the embodiments of the present application. For the sake of brevity, they are not repeated here.

[0524] Optionally, the computer program product can be applied to the AMP device in the embodiments of the present application, and the computer program instructions enable the computer to execute the corresponding processes implemented by the AMP device in the various methods of the embodiments of the present application. For the sake of brevity, they will not be repeated here.

[0525] The embodiment of the present application also provides a computer program.

[0526] Optionally, the computer program can be applied to the network device in the embodiments of the present application. When the computer program runs on a computer, the computer executes the corresponding processes implemented by the network device in the various methods of the embodiments of the present application. For the sake of brevity, they are not described here.

[0527] Optionally, the computer program can be applied to the AMP device in the embodiments of the present application. When the computer program runs on a computer, the computer executes the corresponding processes implemented by the AMP device in the various methods of the embodiments of the present application. For the sake of brevity, they will not be repeated here.

[0528] Those skilled in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0529] Those skilled in the art will clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0530] In the several embodiments provided in this application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are merely schematic. For example, the division of the units is merely a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0531] The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected to achieve the purpose of this embodiment according to actual needs.

[0532] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0533] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art, or the part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions for enabling a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.

[0534] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present application should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. A wireless communication method, characterized in that: include: The environment can AMP device send a first signal, where the first signal is used by the network device to perform measurement to determine the target network device to which the AMP device is to access or switch. 2 . The method according to claim 1 , wherein the target network device is determined based on measurement results of the first signal by multiple network devices.

3. The method according to claim 1 or 2 is characterized in that the first signal is used to determine the target network device to which the AMP device initially accesses.

4. The method according to claim 3 is characterized in that the frequency of the first signal is predefined, or the frequency of the first signal is related to the frequency of the power supply signal of the AMP device. 5 . The method according to claim 4 , characterized in that a frequency point of the first signal and a frequency point of the power supply signal of the AMP device have a first frequency offset.

6. The method according to any one of claims 3 to 5, characterized in that the first signal includes at least one of the following information: Part or all of the identity information of the AMP device; used to determine a parameter related to the signal strength of the first signal; First request information, used to request to send uplink data to the network device; Measurement-related configuration information, used by the network device to perform measurement on the first signal; Configuration information related to measurement result processing, used for multiple network devices to report and / or process the measurement results of the first signal; a response signal related configuration of the first signal; Selection condition information of the target network device; The second request information is used to request to establish an association between the AMP device and the network device.

7. The method according to claim 6 is characterized in that the parameters used to determine the signal strength-related parameters of the first signal include the transmission power of the first signal and / or backscatter loss-related parameters of the AMP device.

8. The method according to claim 6 or 7, characterized in that the measurement-related configuration information is used to configure at least one of the following: a parameter used to determine a measurement time for the network device to measure the first signal, and filter information used by the network device to measure the first signal.

9. The method according to any one of claims 6-8 is characterized in that the configuration information related to the measurement result processing is used to configure multiple network devices to report the measurement results of the first signal to a first network node, or to report the measurement results of the first signal to the same network device among the multiple network devices, and the first network node is a high-level network node of the multiple network devices.

10. The method according to any one of claims 6-9, characterized in that the response signal-related configuration of the first signal is used to configure the time length and / or period of the time window corresponding to the response signal of the first signal.

11. The method according to any one of claims 6 to 10, characterized in that the selection condition information of the target network device includes at least one of the following information: The target network device includes: a threshold value that a measurement result of the target network device on the first signal needs to meet, frequency information that the target network device needs to support, bandwidth information that the target network device needs to support, and data rate information that the target network device needs to support.

12. The method according to any one of claims 5 to 11, characterized in that the method further comprises: The AMP device listens for a response signal to the first signal in a first time window, wherein the response signal includes identity information of the network device.

13. The method according to claim 12, characterized in that the response signal further includes at least one of the following information: Configuration information for the AMP device to send uplink data; System configuration information of the target network device; An association identifier between the AMP device and the target network device.

14. The method according to claim 12 or 13, characterized in that the method further comprises: According to whether the response signal is associated with the identity information of the AMP device, it is determined whether the network device corresponding to the response signal is the target network device.

15. The method according to claim 14 is characterized in that, when the response signal is associated with the identity information of the AMP device, the network device corresponding to the identity information in the response signal is determined as the target network device.

16. The method according to claim 15, characterized in that the method further comprises: The AMP device sends the uplink data to the target network device according to the configuration information used for the AMP device to send the uplink data.

17. The method according to claim 15 or 16, characterized in that the method further comprises: The AMP device receives the broadcast information sent by the target network device.

18. The method according to any one of claims 15 to 17, characterized in that the method further comprises: The AMP device sends an acknowledgment signal of the response signal to the target network device.

19. The method according to any one of claims 12 to 14, characterized in that the method further comprises: If no response signal is received within the first time window or the received response signal is not associated with the identity information of the AMP device, the AMP device sends a second signal, wherein the transmission power of the second signal is greater than the transmission power of the first signal and / or the resources of the second signal are different from the resources of the first signal.

20. The method according to claim 1 or 2 is characterized in that the network device is a first network device, the first network device is a network device currently connected to the AMP device, and the first signal is sent according to first configuration information of the first network device.

21. The method according to claim 20, characterized in that the first configuration information includes at least one of the following: The sequence information, resource information, period information, and transmission power information corresponding to the first signal.

22. The method according to claim 20 or 21, characterized in that the first configuration information is determined according to the capability of the AMP device.

23. The method according to any one of claims 20 to 22, characterized in that the method further comprises: The AMP device receives a first command sent by a first network device or a second command sent by a target network device, wherein the first command is used to instruct the AMP device to switch to the target network device, and the second command is used to instruct the AMP device to switch to the target network device; According to the first command or the second command, switch to the target network device.

24. The method according to claim 23, characterized in that the first command includes identification information of the target network device.

25. The method of claim 23 or 24, wherein the first command is sent using available resources between the first network device and the AMP device.

26. The method according to claim 23, characterized in that the second command comprises at least one of the following: The identity information of the AMP device, the identification information of the target network device, and the identification information of the first network device.

27. The method according to claim 23 or 26, characterized in that the second command is sent on a dedicated resource.

28. The method according to any one of claims 23 to 27, characterized in that the method further comprises: The AMP device replies with confirmation information of the first command or the second command.

29. The method according to any one of claims 1-28, characterized in that the first signal is sent via broadcast or unicast.

30. The method according to any one of claims 1-29, characterized in that the first signal is sent by active transmission, or the first signal is sent by backscattering.

31. The method according to any one of claims 1-30, characterized in that, when the first signal is sent by backscattering, the first signal is sent by backscattering a carrier signal, and the carrier signal is provided by a network device or a dedicated device.

32. A wireless communication method, characterized in that: include: The network device measures a first signal sent by the environment energy AMP device, and the measurement result of the first signal is used to determine a target network device to which the AMP device accesses or switches.

33. The method according to claim 32, characterized in that the target network device is determined based on measurement results of the first signal by multiple network devices.

34. The method according to claim 32 or 33 is characterized in that the first signal is used to determine the target network device to which the AMP device initially accesses.

35. The method according to claim 34 is characterized in that the frequency of the first signal is predefined, or the frequency of the first signal is related to the frequency of the power supply signal of the AMP device.

36. The method according to claim 35, characterized in that the frequency of the first signal and the frequency of the power supply signal of the AMP device have a first frequency offset.

37. The method according to any one of claims 34 to 36, characterized in that the first signal includes at least one of the following information: Part or all of the identity information of the AMP device; used to determine a parameter related to the signal strength of the first signal; First request information, used to request to send uplink data to the network device; Measurement-related configuration information, used by the network device to perform measurement on the first signal; Configuration information related to measurement result processing, used for multiple network devices to report and / or process the measurement results of the first signal; a response signal related configuration of the first signal; Selection condition information of the target network device; The second request information is used to request to establish an association between the AMP device and the network device.

38. The method according to claim 37 is characterized in that the parameters used to determine the signal strength-related parameters of the first signal include the transmission power of the first signal and / or backscatter loss-related parameters of the AMP device.

39. The method according to claim 37 or 38, characterized in that the measurement-related configuration information is used to configure at least one of the following: a measurement period during which the network device measures the first signal, and filter information used by the network device to measure the first signal.

40. The method according to any one of claims 37-39 is characterized in that the configuration information related to the measurement result processing is used to configure multiple network devices to report the measurement results of the first signal to a first network node, or to report the measurement results of the first signal to the same network device among the multiple network devices, and the first network node is a high-level network node of the multiple network devices.

41. The method according to any one of claims 37-40 is characterized in that the response signal-related configuration of the first signal is used to configure the time length and / or period of the time window corresponding to the response signal of the first signal.

42. The method according to any one of claims 37 to 41, characterized in that the selection condition information of the target network device includes at least one of the following information: The target network device includes: a threshold value that a measurement result of the target network device on the first signal needs to meet, frequency information that the target network device needs to support, bandwidth information that the target network device needs to support, and data rate information that the target network device needs to support.

43. The method according to any one of claims 34 to 42, characterized in that the method further comprises: In a case where the network device is the target network device, a response signal of the first signal is sent to the AMP device, wherein the response signal includes identity information of the target network device.

44. The method according to claim 43, characterized in that the response signal further includes at least one of the following information: Configuration information for the AMP device to send uplink data; System configuration information of the target network device; An association identifier between the AMP device and the target network device.

45. The method according to claim 43 or 44, characterized in that the method further comprises: The network device receives a confirmation signal of the response signal sent by the AMP device.

46. ​​The method according to claim 32 or 33, characterized in that the network device is a first network device, the first network device is the network device currently connected to the AMP device, and the method further comprises: The first network device sends first configuration information to the AMP device, and the first signal is sent according to the first configuration information.

47. The method according to claim 46, characterized in that the first configuration information includes at least one of the following: The sequence information, resource information, period information, and transmission power information corresponding to the first signal.

48. The method according to claim 46 or 47 is characterized in that the first configuration information is determined according to the capability of the AMP device.

49. The method according to any one of claims 46 to 48, characterized in that the method further comprises: The first network device sends second configuration information to at least one second network device, where the second configuration information includes the first configuration information.

50. The method according to claim 49, characterized in that the second configuration information further includes at least one of the following: The association relationship between the first configuration information and the AMP device, the processing-related configuration of the at least one second network device for the measurement result of the first signal, and the switching condition information of the target network device.

51. The method according to claim 50, characterized in that the switching condition information of the target network device includes at least one of the following information: The measurement result of the first signal by the first network device needs to meet the threshold value, the measurement result of the first signal by the target network device needs to meet the threshold value, the frequency information that the target network device needs to support, the bandwidth information that the target network device needs to support, and the data rate information that the target network device needs to support.

52. The method according to any one of claims 49-51 is characterized in that the second configuration information is sent via broadcast or unicast.

53. The method according to any one of claims 46 to 52, characterized in that the method further comprises: The first network device sends a first command to the AMP device, where the first command is used to instruct the AMP device to switch to a target network device, wherein the first command includes identification information of the target network device.

54. The method of claim 53, wherein the first command is sent using available resources between the first network device and the AMP device.

55. The method according to claim 32 or 33, characterized in that the network device is a target network device, and the method further comprises: The target network device sends a second command to the AMP device, where the second command is used to instruct the AMP device to switch to the target network device.

56. The method according to claim 55, characterized in that the second command includes at least one of the following: The identity information of the AMP device, the identification information of the target network device, and the identification information of the first network device, where the first network device is the network device to which the AMP device is currently connected.

57. A method according to claim 55 or 56, characterized in that the second command is sent on a dedicated resource.

58. The method according to any one of claims 55-57, characterized in that the method further comprises: The target network device receives confirmation information of the second command replied by the AMP device.

59. The method according to any one of claims 32-58, characterized in that the first signal is sent via broadcast or unicast.

60. The method according to any one of claims 32-59, characterized in that the first signal is sent by active transmission, or the first signal is sent by backscattering.

61. The method according to any one of claims 32-60 is characterized in that, when the first signal is sent by backscattering, the first signal is sent by backscattering a carrier signal, and the carrier signal is provided by a network device or a dedicated device.

62. A method of wireless communication, characterized in that: include: The second network device receives the second configuration information sent by the first network device, and the second configuration information is used to select a target network device to which the environment can be switched by the AMP device. The first network device is the network device currently connected to the AMP device, and the second network device is a network device other than the first network device.

63. The method according to claim 62 is characterized in that the second configuration information includes first configuration information, the first configuration information is the sending configuration of the first signal of the AMP device, and the target network device is determined by measuring the first signal.

64. The method according to claim 63, characterized in that the first configuration information includes at least one of the following: The sequence information, resource information, period information, and transmission power information corresponding to the first signal.

65. The method according to claim 63 or 64 is characterized in that the first configuration information is determined according to the capability of the AMP device.

66. The method according to any one of claims 63 to 65, characterized in that the method further comprises: The second network device measures the first signal sent by the AMP device according to the first configuration information, and the measurement result of the first signal is used to determine the target network device.

67. The method according to any one of claims 63 to 66, characterized in that the second configuration information further includes at least one of the following: The association relationship between the first configuration information and the AMP device, the processing configuration related to the measurement result of the first signal by the second network device, and the switching condition information of the target network device.

68. The method according to claim 67, characterized in that the switching condition information of the target network device includes at least one of the following information: The measurement result of the first signal by the first network device needs to meet the threshold value, the measurement result of the first signal by the target network device needs to meet the threshold value, the frequency information that the target network device needs to support, the bandwidth information that the target network device needs to support, and the data rate information that the target network device needs to support.

69. The method according to any one of claims 62-68 is characterized in that the second configuration information is sent via broadcast or unicast.

70. An environmental energy AMP device, characterized in that: include: The communication unit is used to send a first signal, where the first signal is used by a network device to perform measurement to determine a target network device to which the AMP device is to access or switch.

71. A network device, characterized in that: include: The processing unit is used to measure a first signal sent by the environment energy AMP device, and the measurement result of the first signal is used to determine the target network device to be accessed or switched by the AMP device.

72. A network device, characterized in that: include: A communication unit is used to receive second configuration information sent by a first network device, wherein the second configuration information is used to select a target network device to which the environment can be switched by the AMP device, wherein the first network device is a network device to which the AMP device is currently connected, and the network device is a network device other than the first network device.

73. An environmental energy AMP device, characterized in that: include: A processor and a memory, the memory being used to store a computer program, the processor being used to call and run the computer program stored in the memory to execute the method as claimed in any one of claims 1 to 31.

74. A network device, characterized in that: include: A processor and a memory, the memory being used to store a computer program, the processor being used to call and run the computer program stored in the memory to execute the method as described in any one of claims 32 to 61, or the method as described in any one of claims 62 to 69.

75. A chip, characterized in that: include: A processor, used to call and run a computer program from a memory so that a device equipped with the chip executes a method as described in any one of claims 1 to 31, or a method as described in any one of claims 32 to 61, or a method as described in any one of claims 62 to 69.

76. A computer-readable storage medium, characterized in that Used to store a computer program, the computer program causing a computer to execute the method according to any one of claims 1 to 31, or the method according to any one of claims 32 to 61, or the method according to any one of claims 62 to 69.

77. A computer program product, characterized in that Comprising computer program instructions which cause a computer to perform the method of any one of claims 1 to 31, or the method of any one of claims 32 to 61, or the method of any one of claims 62 to 69.

78. A computer program, characterized in that The computer program causes a computer to execute the method of any one of claims 1 to 31 , or the method of any one of claims 32 to 61 , or the method of any one of claims 62 to 69 .

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