Method and apparatus used in wireless communications

Abstract

Disclosed in the present application are a method and apparatus used in wireless communications. A first node, serving as a response to any condition in a first condition set being met, sends a first wireless signal and monitors a response to the first wireless signal, and determines, on the basis of the monitoring, whether a first AIoT device is nearby, wherein a condition that the first AIoT device is determined to be nearby includes the response to the first wireless signal being successfully received, at least one condition of the first condition set depends on a downlink quality of the first node, and the response to the first wireless signal is sent by the first AIoT device. The present application improves the continuity and accuracy of a first node for AIoT services, and reduces the processing complexity and power consumption of the first node.

Description

A method and apparatus for wireless communication

[0001] This application claims priority to the Chinese Patent Application No. 202411273619.X entitled "A method and apparatus for wireless communication" and filed with the China National Intellectual Property Office on September 11, 2024, the content of which is incorporated herein in its entirety. TECHNICAL FIELD

[0002] The present application relates to a method and apparatus in a wireless communication system, and in particular, to solutions and apparatuses related to ambient IoT in a wireless communication system. BACKGROUND

[0003] In recent years, IoT (Internet of Things) has attracted much attention in the field of wireless communication, and hundreds of billions or even trillions of IoT devices can improve production efficiency and enhance life comfort. Most existing wireless communication devices need to be manually replaced or charged, which can lead to high maintenance costs, and even in some scenarios (such as wireless sensors in the power and oil industries), there are safety hazards. Today, automation and digitization in various industries open up many new markets, for example, most industries use barcodes and RFID (Radio Frequency Identification) technology to complete asset identification. However, it is difficult for RFID-enabled readers to achieve seamless coverage in densely deployed scenarios. Therefore, new IoT technologies are needed to support battery-free devices or energy storage devices that do not require manual replacement or charging.

[0004] 3GPP (3rd Generation Partnership Project) R (Release) 18 begins to study AIoT (Ambient Internet of Things), which is a system for very low-end IoT applications that need to rely on ultra-low complexity devices and ultra-low power consumption technologies. These ultra-low complexity devices are called AIoT devices. AIoT devices are IoT devices powered by energy harvesting, either battery-free or with limited energy storage capabilities (e.g., using capacitors).

[0005] In the continuation study phase of R19, 3GPP determines to support three types of AIoT devices with energy storage capability but different signal processing capabilities. In the AIoT system, the Reader function can be deployed in the UE (User Equipment) or the base station, and is mainly responsible for discovering nearby AIoT devices and performing AIoT-related command operations (such as reading / writing data, etc.) on them. Based on the research progress of R19, the Reader can interact with nearby AIoT devices through wireless connection with the AIoT device according to the indication of the AIoT function controller (such as the core network element supporting AIoT function). SUMMARY

[0006] The applicant finds through research that after the introduction of AIoT function, in addition to the basic flow of discovering AIoT devices (Inventory procedure), the timing for the Reader to determine whether there are AIoT devices nearby in other scenarios is not clear, which is not conducive to improving the continuity and accuracy of AIoT services.

[0007] To solve the above problems, a solution is disclosed in the present application. It should be noted that although the original intention of the present application is to target the wireless interface between AIoT devices and Readers, the present application can also be used for Uu interface, V2X interface or PC5 interface, and similar technical effects of the wireless interface between AIoT devices and Readers can be achieved. In addition, using a unified solution in different scenarios can also help to reduce hardware complexity and cost. In the case of no conflict, the embodiments in any node of the present application and the features in the embodiments can be applied to any other node. In the case of no conflict, the embodiments of the present application and the features in the embodiments can be arbitrarily combined with each other.

[0008] When needed, the explanation of the terminology (Terminology) in the present application refers to the definition of the specification agreement TS38 series of 3GPP; or, refers to the definition of the specification agreement TS22 series of 3GPP; or, refers to the definition of the specification agreement TS23 series of 3GPP; or, refers to the definition of the specification agreement TS24 series of 3GPP.

[0009] The present application discloses a method used in a first node for wireless communication, characterized in that it comprises:

[0010] In response to any condition in the first condition set being met, a first wireless signal is transmitted and the response of the first wireless signal is monitored; based on the monitoring, it is determined whether a first AIoT device is nearby;

[0011] The condition that the first AIoT device is determined to be nearby includes that the response of the first wireless signal is successfully received; at least one condition in the first condition set depends on downlink quality of the first node; the response of the first wireless signal is sent by the first AIoT device.

[0012] In the above method, the first node can respond to the downlink quality in time, which is beneficial to improve the continuity and accuracy of the first node for the AIoT service. In addition, the above method is beneficial to reduce the processing complexity and power consumption of the first node.

[0013] Specifically, according to an aspect of the present application, the above method is characterized in that the condition that the first AIoT device is determined to be nearby further includes:

[0014] The reception quality of the signal from the first AIoT device exceeds a first threshold.

[0015] The above aspect can improve the fineness of the first node in determining whether there is an AIoT device nearby, which is beneficial to the first node in managing the AIoT device at the coverage edge.

[0016] Specifically, according to an aspect of the present application, the above method is characterized in that it comprises:

[0017] Sending first signaling, the indication of the first signaling depends on whether the response of the first wireless signal is successfully received.

[0018] The above aspect is beneficial to improve the flexibility and diversity of the indication information of the first node, and to assist the network or other Reader in managing the AIoT service based on whether there is an AIoT device near the first node.

[0019] Specifically, according to an aspect of the present application, the above method is characterized in that it comprises:

[0020] Receiving second signaling, the second signaling comprises configuration information of AIoT;

[0021] The second signaling is triggered by the first signaling.

[0022] In the above aspect, the first node can obtain the configuration information related to the AIoT service, which is beneficial to improve the flexibility and accuracy of the first node for the AIoT service.

[0023] Specifically, according to an aspect of the present application, the above method is characterized in that it comprises:

[0024] Starting a first timer as a response of determining that the first AIoT device is nearby based on the monitoring;

[0025] The first timer is used to indicate a time length for maintaining the connection with the first AIoT device.

[0026] The above aspect is advantageous for guaranteeing the service continuity of the AIoT device near the first node and improving the efficiency and experience of the AIoT service.

[0027] Specifically, according to an aspect of the present application, the above method is characterized in that it comprises:

[0028] releasing the connection for the first AIoT device as a response based on the monitoring determining that the first AIoT device is not nearby.

[0029] The above aspect is advantageous for reducing the unnecessary resource overhead and power consumption of the first node, thereby improving the resource utilization of the first node.

[0030] Specifically, according to an aspect of the present application, the above method is characterized in that the first condition set comprises at least one of the following conditions:

[0031] resource overload;

[0032] de-authorized AIoT function.

[0033] The above aspect enables the first node to respond in time in the case of resource shortage or de-authorized AIoT function, thereby guaranteeing the service continuity of the AIoT device near the first node.

[0034] Specifically, according to an aspect of the present application, the above method is characterized in that the at least one condition in the first condition set comprises at least one of the following conditions:

[0035] the serving cell is worse than a second threshold value;

[0036] the neighboring cell is better than a first offset value of the special cell;

[0037] the neighboring cell is better than a third threshold value;

[0038] the special cell is worse than a fourth threshold value and the neighboring cell or the secondary cell is better than a fifth threshold value;

[0039] the neighboring cell is better than a second offset value of the secondary cell;

[0040] at least one condition handover CHO candidate cell satisfies a corresponding CHO execution condition;

[0041] radio resource control RRC connection failure occurs.

[0042] The above aspect enables the first node to respond in advance in the case of a poor downlink quality, which is not only beneficial to the network for connection control of the first node, but also guarantees service continuity of the AIoT devices near the first node.

[0043] Specifically, according to an aspect of the present application, the above method is characterized in that the first condition set includes at least one of the following conditions:

[0044] Handover occurs;

[0045] RRC connection re-establishment occurs.

[0046] The above aspect enables the first node to respond in a timely manner in the case of handover or RRC connection re-establishment, which is not only beneficial to the network for resource configuration of the first node and management of the AIoT service, but also guarantees service continuity of the AIoT devices near the first node.

[0047] The present application discloses a first node used for wireless communication, characterized in that it comprises:

[0048] The first node comprises one or more processors and a memory;

[0049] The memory is coupled with the one or more processors, and the memory is configured to store computer program code, the computer program code comprising computer instructions, and the one or more processors are configured to invoke the computer instructions to enable the first node to perform the method in the first node used for wireless communication. BRIEF DESCRIPTION OF DRAWINGS

[0050] Other features, objects and advantages of the present application will become more apparent from the following detailed description of non-limiting embodiments thereof, read in conjunction with the accompanying drawings:

[0051] Fig. 1 shows a flowchart of communication of a first node according to one embodiment of the present application;

[0052] Fig. 2 shows a schematic diagram of a network architecture according to one embodiment of the present application;

[0053] Fig. 3 shows a schematic diagram of an embodiment of a radio protocol architecture for a user plane and a control plane according to one embodiment of the present application;

[0054] Fig. 4 shows a schematic diagram of a first communication device and a second communication device according to one embodiment of the present application;

[0055] Fig. 5 shows a transmission flowchart between a first node N1 and a second node N2 according to one embodiment of the present application;

[0056] Figure 6 shows a flowchart of the first signaling for requesting migration of all or part of AIoT devices in the vicinity in the case where the second node is able to work as a Reader, according to one embodiment of the present application;

[0057] Figure 7 shows a flowchart of the first signaling for requesting migration of all or part of AIoT devices in the vicinity in the case where the second node is a management node of the first node, according to one embodiment of the present application;

[0058] Figure 8 shows a flowchart of the first node sending the first signaling as a response to determining that there are no AIoT devices in the vicinity, according to one embodiment of the present application;

[0059] Figure 9 shows a flowchart of the first signaling being sent in the case where the first node is instructed to de-authorize AIoT functions and there is at least one AIoT device in the vicinity of the first node, according to one embodiment of the present application;

[0060] Figure 10 shows a flowchart of the first signaling being sent in the case where the first node requests to de-authorize AIoT functions and there is at least one AIoT device in the vicinity of the first node, according to one embodiment of the present application;

[0061] Figure 11 shows a flowchart of the first signaling being sent in a source cell in the case where the first node is a user equipment, according to one embodiment of the present application;

[0062] Figure 12 shows a flowchart of the first signaling being sent in a target cell in the case where the first node is a user equipment, according to one embodiment of the present application;

[0063] Figure 13 shows a flowchart of the subsequent behavior of the first node in the case where the first node is a user equipment and an RRC connection fails, according to one embodiment of the present application;

[0064] Figure 14 shows a structural block diagram of a processing device in a first node, according to one embodiment of the present application. DETAILED DESCRIPTION

[0065] The technical solutions of the present application will be further described in detail below with reference to the accompanying drawings. It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other arbitrarily without conflict. Based on performance, flexibility, complexity, overhead and compatibility, etc., the person skilled in the art has the motivation to combine the embodiments in different drawings flexibly without conflict, including but not limited to the embodiments in Figure 1 and the embodiments in Figures 5-13, the embodiments in Figure 5 and the embodiments in Figures 6-13, etc.

[0066] Embodiment 1

[0067] Embodiment 1 illustrates a flowchart of communication of a first node according to an embodiment of the present application, as shown in FIG. 1. In the first node 100 shown in FIG. 1, each block represents a step.

[0068] In Embodiment 1, the first node 100 transmits a first wireless signal and monitors a response of the first wireless signal in response to any condition in a first condition set being satisfied in step 101; determines whether a first AIoT device is nearby based on the monitoring in step 102.

[0069] In Embodiment 1, the condition that the first AIoT device is determined to be nearby includes that the response of the first wireless signal is successfully received; at least one condition in the first condition set depends on downlink quality of the first node; the response of the first wireless signal is transmitted by the first AIoT device.

[0070] As an embodiment, the first node works as a Reader.

[0071] As an embodiment, the first node works as a Reader refers to that the first node comprises a Reader function.

[0072] As an embodiment, the first node works as a Reader refers to that the first node has a Reader capability.

[0073] As an embodiment, the first node works as a Reader refers to that the first node is authorized as a Reader.

[0074] As an embodiment, the Reader capability comprises at least one of the following: discovering an AIoT device; performing a read operation on an AIoT device; performing a write operation on an AIoT device.

[0075] As an embodiment, the first condition set comprises at least one of the following conditions: resource overload; being de-authorized AIoT function.

[0076] As an embodiment, the resource overload refers to that resource of the first node is congested.

[0077] As an embodiment, the resource overload refers to that management node resource of the first node is congested.

[0078] As an embodiment, the resource overload comprises that resource availability of the first node is lower than a threshold #1.

[0079] As an embodiment, the resource overload comprises that a resource availability of the first node for the AIoT service is lower than a threshold #2.

[0080] As an embodiment, the resource overload comprises that a resource availability of a management node of the first node is lower than a threshold #3.

[0081] In the above embodiment, the management node resource overload of the first node causes a transmission interruption between the first node and the AIoT function controller, which can affect the service continuity between the first node and the AIoT devices nearby.

[0082] As an embodiment, the resource comprises a computing resource.

[0083] As an embodiment, the resource comprises at least one of the following: a CPU (Central Processing Unit) resource; a GPU (Graphic Processing Unit) resource.

[0084] As an embodiment, the resource comprises a time domain resource.

[0085] As an embodiment, the time domain resource comprises at least one of the following: a radio frame; a radio subframe; a time slot; an OFDM (Orthogonal Frequency Division Multiplexing) symbol; a sampling time length.

[0086] As an embodiment, the time domain resource depends on a waveform.

[0087] As an embodiment, the time domain resource depends on a length of an OOK (on / off keying) time unit.

[0088] As an embodiment, the time domain resource depends on a time length of a periodic characteristic sequence.

[0089] As an embodiment, the time domain resource depends on a length of an On Duration of a WUS (Wake Up Signal).

[0090] As an embodiment, the resource comprises a frequency domain resource.

[0091] As an embodiment, the frequency domain resource comprises at least one of the following: a frequency band; a bandwidth; a subcarrier spacing; a beam; a resource block; a physical resource block.

[0092] As an embodiment, the resource comprises a space domain resource.

[0093] As an embodiment, the spatial domain resource comprises at least one of the following: a code word; a layer; an antenna port.

[0094] As an embodiment, the resource comprises an Instance resource.

[0095] As an embodiment, the Instance resource comprises an instance resource after the first node is instantiated.

[0096] As an embodiment, the Instance resource comprises an instance resource after the first node is instantiated for the AIoT service.

[0097] As an embodiment, the Instance resource comprises an instance resource after a management node of the first node is instantiated.

[0098] As an embodiment, the de-authorized AIoT function means that the first node cannot work as a Reader.

[0099] As an embodiment, the de-authorized AIoT function means that the Reader authorization state is changed from authorized to unauthorized.

[0100] As an embodiment, the de-authorized AIoT function means that the first node does not have a Reader capability.

[0101] As an embodiment, the management node of the first node instructs the first node to de-authorize the AIoT function.

[0102] As an embodiment, the first node requests the management node of the first node to de-authorize the AIoT function.

[0103] As an embodiment, the at least one condition in the first condition set comprises at least one of the following conditions: a serving cell is worse than a second threshold; a neighbor cell is better than a special cell first offset value; a neighbor cell is better than a third threshold; a special cell is worse than a fourth threshold and a neighbor cell or a secondary cell is better than a fifth threshold; a neighbor cell is better than a secondary cell second offset value; at least one CHO candidate cell satisfies a corresponding CHO execution condition; an RRC connection occurs failure.

[0104] As an embodiment, the at least one condition in the first condition set is satisfied means that a downlink quality of the first node does not satisfy continuing transmission of the first node.

[0105] As an embodiment, the at least one condition in the first condition set is satisfied means that the first node needs to change a serving cell.

[0106] As one embodiment, the RRC connection failure occurrence refers to detecting occurrence of a Ralio Link Failure (RLF).

[0107] As one embodiment, the RRC connection failure occurrence refers to detecting occurrence of a Hand Over Failure (HOF).

[0108] As one embodiment, the RRC connection failure occurrence refers to detecting occurrence of a RRC Reconfiguration failure.

[0109] As one embodiment, the RRC connection failure occurrence refers to detecting an Integrity Check failure.

[0110] As one embodiment, the first set of conditions comprises at least one of: a handover occurrence; a RRC connection reestablishment occurrence.

[0111] As one embodiment, the handover occurrence refers to a handover procedure being triggered.

[0112] As one embodiment, the handover occurrence refers to receiving a RRC Reconfiguration message for triggering a handover procedure.

[0113] As one embodiment, the handover occurrence refers to a handover procedure being completed.

[0114] As one embodiment, the handover occurrence refers to sending a RRC Reconfiguration Complete message for completing a RRC handover procedure.

[0115] As one embodiment, the RRC connection reestablishment occurrence refers to a RRC connection reestablishment being requested.

[0116] As one embodiment, the RRC connection reestablishment occurrence refers to sending a RRC Reestablishment Request message.

[0117] As one embodiment, the RRC connection reestablishment occurrence refers to a RRC connection reestablishment being completed.

[0118] As one embodiment, the RRC connection reestablishment occurrence refers to sending a RRC Reestablishment Complete message.

[0119] As one embodiment, the first wireless signal is an OOK signal.

[0120] As one embodiment, the first wireless signal is an OFDM symbol.

[0121] As one embodiment, the first wireless signal is a signature sequence.

[0122] As one embodiment, the first wireless signal is a WUS.

[0123] As one embodiment, the first wireless signal is a PRDCH (Physical Reader to Device Channel).

[0124] As one embodiment, the first wireless signal is downlink AIoT signaling or downlink AIoT data.

[0125] As one embodiment, the response of the first wireless signal is energized by the first wireless signal.

[0126] As one embodiment, the response of the first wireless signal is triggered to be transmitted by the first wireless signal.

[0127] As one embodiment, the response of the first wireless signal is energized by the first wireless signal.

[0128] As one embodiment, the response of the first wireless signal is a backscatter signal of the first wireless signal.

[0129] As one embodiment, the response of the first wireless signal is an OOK signal.

[0130] As one embodiment, the response of the first wireless signal is a BPSK (Binary Phase Shift Keying) signal.

[0131] As one embodiment, the response of the first wireless signal is an MSK (Minimum Shift Keying) signal.

[0132] As one embodiment, the response of the first wireless signal is an OFDM symbol.

[0133] As one embodiment, the response of the first wireless signal is a signature sequence.

[0134] As one embodiment, the response of the first wireless signal is a WUS.

[0135] As one embodiment, the response of the first wireless signal is a PDRCH (Physical Device to Reader Channel).

[0136] As one embodiment, the response of the first wireless signal is uplink AIoT signaling or uplink AIoT data.

[0137] As one embodiment, the monitoring is energy detection.

[0138] As one embodiment, the monitoring is coherent detection.

[0139] As one embodiment, the monitoring is non-coherent detection.

[0140] As one embodiment, the monitoring is channel decoding.

[0141] As one embodiment, the monitoring comprises monitoring an uplink wireless interface between the nearby AIoT device and the first node.

[0142] As one embodiment, the monitoring comprises monitoring an uplink physical channel between the nearby AIoT device and the first node.

[0143] As one embodiment, the monitoring comprises monitoring a PRDCH.

[0144] As one embodiment, the first AIoT device being nearby means that the first AIoT device is within a coverage range of a transceiving signal of the first node.

[0145] As one embodiment, the first AIoT device being nearby means that the first node provides proxy service for the first AIoT device.

[0146] As one embodiment, the first AIoT device being nearby means that the first node maintains authorization of proxy service for the first AIoT device.

[0147] As one embodiment, the first AIoT device being nearby means that the first node and the first AIoT device can interact AIoT signaling or AIoT data through a wireless interface.

[0148] As one embodiment, the first AIoT device being nearby means that there is at least one AIoT device in the vicinity of the first node.

[0149] As one embodiment, the condition that the first AIoT device is determined to be nearby further comprises that a reception quality of a signal from the first AIoT device exceeds a first threshold.

[0150] As one embodiment, the signal from the first AIoT device is a response of the first wireless signal.

[0151] As one embodiment, the condition that the first AIoT device is determined to be nearby is that the response of the first wireless signal is successfully received.

[0152] As one embodiment, the condition that the first AIoT device is determined to be nearby is that the response of the first wireless signal is successfully received, and a reception quality of a signal from the first AIoT device exceeds a first threshold.

[0153] As one embodiment, the reception quality of the signal is in units of dBm (decibel-milliwatt).

[0154] As one embodiment, the reception quality of the signal is in units of dB (decibel).

[0155] As one embodiment, the reception quality of the signal is RSRP (Reference Signal Received Power).

[0156] As one embodiment, the reception quality of the signal is RSRQ (Reference Signal Received Quality).

[0157] As one embodiment, the reception quality of the signal is RSSI (Received Signal Strength Indicator).

[0158] As one embodiment, the reception quality of the signal is SNR (Signal to Noise Ratio) or SINR (Signal to Interference plus Noise Ratio).

[0159] As one embodiment, the reception quality of the signal is a BLER (Block Error Rate) of an uplink physical channel between the first AIoT device and the first node.

[0160] As one embodiment, the reception quality of the signal is a BLER of a PRDCH.

[0161] As one embodiment, the first AIoT device not being nearby means that the first AIoT device is not within a coverage range of a signal transceived by the first node.

[0162] As one embodiment, the first AIoT device not being nearby means that the first node cannot provide proxy service for the first AIoT device.

[0163] As one embodiment, the first AIoT device not being nearby means that the first node cannot maintain authorization of a proxy service of the first AIoT device.

[0164] As one embodiment, the first AIoT device not being nearby means that the first node and the first AIoT device cannot interact AIoT signaling or AIoT data through a wireless interface.

[0165] As one embodiment, the condition that the first AIoT device is determined to not be nearby is that the response of the first wireless signal is not successfully received.

[0166] As one embodiment, the condition that the first AIoT device is determined to not be nearby includes at least one of the following: the response of the first wireless signal is not successfully received; a reception quality of a signal from the first AIoT device does not exceed a first threshold value.

[0167] As one embodiment, the uplink AIoT signaling means D2R (Device to Reader) signaling, and the downlink AIoT signaling means R2D (Reader to Device) signaling.

[0168] As one embodiment, the uplink AIoT data means D2R data, and the downlink AIoT data means R2D data.

[0169] As one embodiment, the response of the first wireless signal being successfully received means that the response of the first wireless signal is correctly decoded.

[0170] As one embodiment, the response of the first wireless signal being successfully received means that the response of the first wireless signal passes CRC (Cyclic Redundancy Check).

[0171] As one embodiment, the response of the first wireless signal being successfully received means that a reception energy of the response of the first wireless signal exceeds a threshold value #4.

[0172] As one embodiment, the response of the first wireless signal being successfully received means that a coherent detection of the response of the first wireless signal exceeds a first threshold value.

[0173] As one embodiment, the response of the first wireless signal being successfully received means that a non-coherent detection of the response of the first wireless signal exceeds a second threshold value.

[0174] As one embodiment, the management node of the first node is an access network device connected by the first node.

[0175] As one embodiment, the management node of the first node is a core network device connected by the first node.

[0176] As one embodiment, a core network device connected by the first node is capable of controlling AIoT functions.

[0177] As one embodiment, a core network device connected by the first node includes an AIoT function controller.

[0178] As one embodiment, a core network device connected by the first node is capable of communicating with an AIoT function controller.

[0179] As one embodiment, a core network device connected by the first node is a proxy node of the first node and the AIoT function controller.

[0180] As one embodiment, the AIoT function controller is an AMF (Access and Mobility Management Function).

[0181] Embodiment 2

[0182] Embodiment 2 illustrates a schematic diagram of a network architecture according to one embodiment of the present application, as shown in FIG. 2.

[0183] FIG. 2 illustrates a network architecture 200. The network architecture 200 is a 5G NR (New Radio) / LTE (Long-Term Evolution) / LTE-A (Long-Term Evolution Advanced) system, or the network architecture 200 is a 5G+ network architecture, or the network architecture 200 is a 6G network architecture, or the network architecture 200 is a network architecture adopted in 3GPP future continued evolution; the network architecture 200 can be referred to as a 5GS (5G System) / EPS (Evolved Packet System), or the network architecture 200 can be referred to as a 6GS (6G System); the network architecture 200 includes a UE (User Equipment) 201, a RAN (Radio Access Network) 202, a core network 210, at least one of a HSS (Home Subscriber Server) / UDM (Unified Data Management) 220, and an Internet service 230. The network architecture 200 can be interconnected with other access networks, but these entities / interfaces are not shown for simplicity. As illustrated, the network architecture 200 provides packet-switched services, however, those skilled in the art will readily appreciate that the various concepts presented throughout this application are amenable to use with networked or other cellular network environments providing circuit-switched services. The RAN includes a node 203. The RAN can also include other nodes 204. The node 203 provides user and control plane protocol terminations toward the UE 201. The node 203 can be connected to the other nodes 204 via an Xn interface (e.g., backhaul) / X2 interface. The node 203 can also be referred to as a base station, a base transceiver station, a radio base station, a radio transceiver, a transceiver function, a basic service set (BSS), an extended service set (ESS), a TRP (Transmit Receive Point), or some other suitable terminology. AIoT devices 205 and other AIoT devices 206 are IoT devices that support energy harvesting power supply, examples include RFID electronic tags, RFID cards, radio frequency cards, transponders, or any other similar functional devices. The core network 210 is a 5GC (5G Core Network) / EPC (Evolved Packet Core), or the core network 210 is a 6GC; the node 203 provides an access point for the UE 201 to the core network 210.Examples of UE 201 include cellular phones, smart phones, session initiation protocol (SIP) phones, laptop computers, personal digital assistants (PDAs), satellite radios, non-terrestrial base station communications, satellite mobile communications, global positioning systems, multimedia devices, video devices, digital audio players (e.g., MP3 players), cameras, game consoles, drones, aerial vehicles, narrowband internet of things devices, machine type communication devices, land vehicles, automobiles, wearable devices, or any other similar functional device. Those skilled in the art will also recognize that a UE 201 can be referred to as a mobile station, a subscriber station, a mobile unit, a subscriber unit, a wireless unit, a remote unit, a mobile device, a wireless device, a wireless communication device, a remote device, a mobile subscriber station, an access terminal, a mobile terminal, a wireless terminal, a remote terminal, a handset, a user agent, a mobile client, a client, or some other suitable terminology. Node 203 is connected to the core network 210 by an S1 / NG interface. The core network 210 includes MME (Mobility Management Entity) / AMF (Access and Mobility Management Function) / SMF (Session Management Function) 211, other MME / AMF / SMF 214, S-GW (Service Gateway) / UPF (User Plane Function) 212, and P-GW (Packet Data Network Gateway) / UPF 213, and other nodes not shown in FIG. 2. The MME / AMF / SMF 211 is a control node that processes signaling between the UE 201 and the core network 210. Generally, the MME / AMF / SMF 211 provides bearer and connection management. All user IP (Internet Protocol) packets are transferred through the S-GW / UPF 212, which itself is connected to the P-GW / UPF 213. The P-GW / UPF 213 provides UE IP address allocation, among other functions. The P-GW / UPF 213 is connected to the Internet services 230. The Internet services 230 include operator- corresponding Internet protocol services, which can specifically include the Internet, an intranet, an IMS (IP Multimedia Subsystem), and a packet-switched service.

[0184] As one embodiment, the core network 210 includes an AIoT function controller for controlling IoT application services with AIoT devices.

[0185] As one embodiment, the first node comprises the UE 201.

[0186] As one embodiment, the first node comprises the node 203.

[0187] As one embodiment, the wireless link between the UE 201 and the node 203 comprises a cellular network link.

[0188] As one embodiment, the wireless link between the UE 201 and the AIoT device 205 comprises a cellular network link.

[0189] As one embodiment, the wireless link between the UE 201 and the AIoT device 205 comprises a link dedicated for interacting AIoT signaling and AIoT data.

[0190] As one embodiment, the wireless link between the node 203 and the other AIoT device 206 comprises a cellular network link.

[0191] As one embodiment, the wireless link between the node 203 and the other AIoT device 206 comprises a link dedicated for interacting AIoT signaling and AIoT data.

[0192] Embodiment 3

[0193] Embodiment 3 illustrates a schematic diagram of an embodiment of a radio protocol architecture for the user plane and control plane according to one embodiment of the application, as shown in FIG. 3.

[0194] Embodiment 3 shows a schematic diagram of an embodiment of a user plane and control plane radio protocol architecture according to the present application, as shown in Figure 3. Figure 3 is a schematic diagram illustrating an embodiment of a radio protocol architecture for the user plane 350 and the control plane 300, Figure 3 shows the radio protocol architecture for the control plane 300 between a first communication node device (any of gNB, MME, AMF, UE, Reader or RSU in V2X) and a second communication node device (any of AIoT device, UE, gNB, RSU in V2X) with four layers: Layer 1, Layer 2, Layer 3, and the NAS layer. Layer 1 (L1 layer) is the lowest layer and implements various PHY (Physical layer) signal processing functions. The L1 layer will be referred to as the PHY 301 herein. Layer 2 (L2 layer) 305 is above the PHY 301 and is responsible for the link between the first communication node device and the second communication node device. The L2 layer 305 includes a MAC (Medium Access Control) sublayer 302, a RLC (Radio Link Control) sublayer 303, and a PDCP (Packet Data Convergence Protocol) sublayer 304, which terminate the functions of the second communication node device. The PDCP sublayer 304 provides multiplexing between the different radio bearers and the logical channel. The PDCP sublayer 304 also provides security functions, such as ciphering / de-ciphering, and header compression / de-compression, as well as handover support. The RLC sublayer 303 provides segmentation and reassembly of upper layer data packets, retransmission of lost data packets, and reordering of data packets to compensate for out-of-order reception due to HARQ. The MAC sublayer 302 provides multiplexing between logical and transport channels. The MAC sublayer 302 is also responsible for allocating the various radio resources (e.g., resource blocks) in one cell among the UEs. The MAC sublayer 302 is also responsible for HARQ operations. The RRC (Radio Resource Control) sublayer 306 in Layer 3 (L3 layer) in the control plane 300 is responsible for obtaining radio resources (i.e., radio bearers) and configuring the lower layers using RRC signaling between the second communication node device and the first communication node device. The NAS (Non Access Stratum) sublayer 307 in the control plane 300 is used for the transfer of non-access stratum signaling between the first communication node device and the second communication node device, which is transparent / invisible to the base station.The radio protocol architecture of the user plane 350 includes layer 1 (LI layer) and layer 2 (L2 layer) and is substantially the same for the radio protocol architecture of the first communication node device and the second communication node device in the user plane 350 for the physical layer 351, the PDCP sublayer 354 in the L2 layer 355, the RLC sublayer 353 in the L2 layer 355, and the MAC sublayer 352 in the L2 layer 355 as the corresponding layers and sublayers in the control plane 300, but the PDCP sublayer 354 also provides header compression for upper layer data packets to reduce radio transmission overhead. Also included in the L2 layer 355 in the user plane 350 is the SDAP (Service Data Adaptation Protocol) sublayer 356, which is responsible for mapping between QoS flows and data radio bearers (DRBs) to support diversity of services. Although not illustrated, the first communication node device can have several upper layers above the L2 layer 355, including a network layer (e.g., IP layer) that terminates at the P-GW on the network side and an application layer that terminates at the other end of the connection (e.g., a remote UE, a server, etc.).

[0195] As one embodiment, the radio protocol architecture in FIG. 3 is applicable to the first node.

[0196] As one embodiment, the first communication node device comprises an AIoT function controller.

[0197] As one embodiment, the control plane 300 further comprises an AIoT sublayer 308 for interaction of control data with the AIoT function controller. It is noted that the AIoT sublayer 308 is not limiting and other names can exist.

[0198] As one embodiment, the control plane 350 further comprises an AIoT sublayer 357 for interaction of user data with the AIoT function controller. It is noted that the AIoT sublayer 357 is not limiting and other names can exist.

[0199] As one embodiment, the AIoT sublayer 308 is above the RRC sublayer 306.

[0200] As one embodiment, the AIoT sublayer 357 is above the SDAP sublayer 356.

[0201] As one embodiment, in case the second communication node device is an AIoT device, the control plane 300 only comprises the MAC sublayer 302 and the PHY sublayer 301.

[0202] As an embodiment, in case the second communication node device is an AIoT device, the control plane 300 only comprises the AIoT sublayer 308, the MAC sublayer 302 and the PHY sublayer 301.

[0203] As an embodiment, in case the second communication node device is an AIoT device, the user plane 350 only comprises the MAC sublayer 352 and the PHY sublayer 351.

[0204] As an embodiment, in case the second communication node device is an AIoT device, the user plane 350 only comprises the AIoT sublayer 357, the MAC sublayer 352 and the PHY sublayer 351.

[0205] As an embodiment, the first wireless signal is generated at the PHY sublayer 301, or at the MAC sublayer 302, or at the PHY sublayer 351, or at the MAC sublayer 352.

[0206] As an embodiment, the first signaling is generated at the AIoT sublayer 308.

[0207] As an embodiment, the first signaling is generated at the NAS sublayer 307.

[0208] As an embodiment, the first signaling is generated at the RRC sublayer 306.

[0209] As an embodiment, the first signaling is generated at the RRC sublayer 306 and the NAS sublayer 307.

[0210] As an embodiment, the first signaling is generated at the RRC sublayer 306 and the AIoT sublayer 308.

[0211] As an embodiment, the first signaling is generated at the AIoT sublayer 308 and the NAS sublayer 307.

[0212] As an embodiment, the first signaling is generated at the AIoT sublayer 308, the NAS sublayer 307 and the RRC sublayer 306.

[0213] Embodiment 4

[0214] Embodiment 4 illustrates a schematic diagram of a first communication device and a second communication device according to an embodiment of the present application, as shown in FIG. 4. FIG. 4 is a block diagram of a first communication device 410 and a second communication device 450 communicating with each other in an access network.

[0215] The first communication device 410 includes a controller / processor 475, a memory 476, a receive processor 470, a transmit processor 416, a multi-antenna receive processor 472, a multi-antenna transmit processor 471, a transmitter / receiver 418, and antennas 420.

[0216] The second communication device 450 includes a controller / processor 459, a memory 460, a data source 467, a transmit processor 468, a receive processor 456, a multi-antenna transmit processor 457, a multi-antenna receive processor 458, a transmitter / receiver 454, and antennas 452.

[0217] In a transmission from the first communication device 410 to the second communication device 450, at the first communication device 410, upper layer packets from a core network are provided to the controller / processor 475. The controller / processor 475 implements functionality of the L2 layer. In the DL (DownLink), the controller / processor 475 provides header compression, ciphering, packet segmentation and reordering, multiplexing between logical and transport channels, and radio resource allocations for the second communication device 450 based on various priority metrics. The controller / processor 475 is also responsible for HARQ operations, retransmission of lost packets, and signaling to the second communication device 450. The transmit processor 416 and the multi-antenna transmit processor 471 implement various signal processing functions for the LI layer (i.e., physical layer). The transmit processor 416 implements coding and interleaving to facilitate forward error correction (FEC) at the second communication device 450, and constellation mapping based on various modulation schemes (e.g., binary phase-shift keying (BPSK), quadrature phase-shift keying (QPSK), M-phase-shift keying (M-PSK), M-quadrature amplitude modulation (M-QAM)). The multi-antenna transmit processor 471 performs digital spatial pre-coding of the coded and modulated symbols, including codebook-based and non-codebook-based pre-coding, and beamforming processing, generating one or more parallel streams. The transmit processor 416 then maps to each of the parallel streams to subcarriers, multiplexes the modulated symbols with reference signals (e.g., pilot) in time domain and / or frequency domain, and then performs an inverse fast Fourier transform (IFFT) to generate time domain OFDM streams. The multi-antenna transmit processor 471 then performs transmit analog pre-coding / beamforming operations on the time domain multi-carrier symbol streams. Each transmitter 418 converts the baseband multi-carrier symbol streams provided by the multi-antenna transmit processor 471 into radio frequency streams, and then provides the radio frequency streams to the different antennas 420.

[0218] In transmission from the first communication device 410 to the second communication device 450, at the second communication device 450, each receiver 454 receives a signal through its respective antenna 452. Each receiver 454 recovers information modulated onto an RF carrier and converts the RF stream into a baseband, multicarrier symbol stream to be provided to a receive processor 456. The receive processor 456 and a multiple access receive processor 458 implement various signal processing functions of the Ll layer. The multiple access receive processor 458 performs receive analog precoding / beamforming operations on the baseband, multicarrier symbol stream from the receivers 454. The receive processor 456 converts the baseband, multicarrier symbol stream from the receive analog precoding / beamforming operations from the time domain to the frequency domain using a Fast Fourier Transform (FFT). In the frequency domain, the physical layer data signals and the reference signals are demultiplexed by the receive processor 456, with the reference signals to be used for channel estimation and the data signals to be recovered after multi-antenna detection in the multiple access receive processor 458 for any parallel streams destined to the second communication device 450. The symbols on each parallel stream are demodulated and recovered in the receive processor 456 and generate soft decisions. The receive processor 456 then decodes and de-interleaves the soft decisions to recover the upper layer data and control signals transmitted by the first communication device 410 on the physical channels. The upper layer data and control signals are then provided to a controller / processor 459. The controller / processor 459 implements the functions of the L2 layer. The controller / processor 459 can be associated with a memory 460 that stores program codes and data. The memory 460 can be referred to as a computer-readable medium. In the DL, the controller / processor 459 provides demultiplexing between transport and logical channels, packet reassembly, deciphering, header decompression, control signal processing to recover upper layer data packets from the core network. The upper layer data packets are then provided to all protocol layers above the L2 layer. Various control signals can also be provided to the L3 for L3 processing. The controller / processor 459 is also responsible for error detection using an acknowledgement (ACK) and / or negative acknowledgement (NACK) protocol to support HARQ operations.

[0219] In the transmission from the second communication device 450 to the first communication device 410, at the second communication device 450, a data source 467 is used to provide upper layer packets to a controller / processor 459. The data source 467 represents all protocol layers above the L2 layer. Similar to the transmit function described at the first communication device 410 in the DL, the controller / processor 459 implements header compression, ciphering, packet segmentation and reordering, and multiplexing between logical and transport channels based on radio resource allocations for the first communication device 410, implements L2 layer functionality for the user plane and control plane. The controller / processor 459 is also responsible for HARQ operations, retransmission of lost packets, and signaling to the first communication device 410. A transmit processor 468, in conjunction with a multi-antenna transmit processor 457, performs modulation mapping, channel coding processing, digital multi-antenna spatial processing, including codebook-based and non-codebook-based precoding, and beamforming processing, and then the transmit processor 468 generates parallel streams of symbols that are modulated onto different carriers, and the modulated symbol streams are then provided to different antennas 452 via transmitters 454 after analog precoding / beamforming at the multi-antenna transmit processor 457. Each transmitter 454 modulates a respective symbol stream, converts the modulated symbol stream from digital form to analog form, and transmits the analog signal via the corresponding antenna 452.

[0220] In the transmission from the second communication device 450 to the first communication device 410, the functionality at the first communication device 410 is similar to the functionality described in connection with the reception at the second communication device 450 in the transmission from the first communication device 410 to the second communication device 450. Each receiver 418 receives a signal from its respective antenna 420, converts the received signal to a baseband signal, and provides the baseband signal to a multi-antenna receive processor 472 and a receive processor 470. The receive processor 470 and the multi-antenna receive processor 472, in conjunction with the controller / processor 475, implement the L1 layer functions. The controller / processor 475 implements L2 layer functionality. The controller / processor 475 can be associated with a memory 476 that stores program codes and data. The memory 476 can be referred to as a computer-readable medium. The controller / processor 475 provides demultiplexing between transport and logical channels, packet reassembly, deciphering, header decompression, control signal processing to recover upper layer packets from the second communication device 450. Upper layer packets from the controller / processor 475 can be provided to a core network. The controller / processor 475 is also responsible for error detection using an ACK and / or NACK protocol to support HARQ operations.

[0221] As one embodiment, the second communication device 450 comprises: at least one processor and at least one memory including computer program code; the at least one memory and the computer program code configured to, with the at least one processor, cause the performance of the following: in response to any of a first set of conditions being met, transmitting a first wireless signal and monitoring a response to the first wireless signal; determining whether a first AIoT device is in proximity based on the monitoring; wherein a condition for the first AIoT device being determined to be in proximity comprises the response to the first wireless signal being successfully received; at least one condition in the first set of conditions depends on a downlink quality of the first node; the response to the first wireless signal being transmitted by the first AIoT device.

[0222] As one embodiment, the second communication device 450 comprises: a memory storing a program of computer readable instructions to produce actions when executed by at least one processor, the actions comprising: in response to any of a first set of conditions being met, transmitting a first wireless signal and monitoring a response to the first wireless signal; determining whether a first AIoT device is in proximity based on the monitoring; wherein a condition for the first AIoT device being determined to be in proximity comprises the response to the first wireless signal being successfully received; at least one condition in the first set of conditions depends on a downlink quality of the first node; the response to the first wireless signal being transmitted by the first AIoT device.

[0223] As one embodiment, the first node in the present application comprises the second communication device 450.

[0224] As one embodiment, the second communication device 450 is a user equipment and the first communication device 410 is an access network device (e.g. gNB, eNB).

[0225] As one embodiment, the second communication device 450 is an AIoT device and the first communication device 410 is a Reader (e.g. a user equipment or an access network device capable of working as a Reader).

[0226] As one embodiment, in the case that the second communication device 450 is an AIoT device, the second communication device 450 only comprises partial functions, please refer to the architecture diagram for AIoT device in TR 38.769 for details.

[0227] As one embodiment, the user equipment is a terminal.

[0228] As an embodiment, some or all of {the antenna 452, the transmitter 454, the transmit processor 468, the multi-antenna transmit processor 457, the controller / processor 459, the data source 467} are used to transmit the first wireless signal; some or all of {the antenna 452, the receiver 454, the receive processor 456, the multi-antenna receive processor 458, the controller / processor 459, the memory 460} are used to monitor for and receive the response to the first wireless signal.

[0229] As an embodiment, some or all of {the antenna 452, the receiver 454, the receive processor 456, the multi-antenna receive processor 458, the controller / processor 459, the memory 460} are used to receive a signal from the first AIoT device.

[0230] As an embodiment, some or all of {the multi-antenna receive processor 458, the controller / processor 459, the memory 460, the data source 467} are used to determine whether the first AIoT device is nearby based on the monitoring.

[0231] As an embodiment, some or all of {the antenna 452, the transmitter 454, the transmit processor 468, the multi-antenna transmit processor 457, the controller / processor 459, the data source 467} are used to transmit the first signaling;

[0232] As an embodiment, some or all of {the antenna 452, the receiver 454, the receive processor 456, the multi-antenna receive processor 458, the controller / processor 459, the memory 460} are used to receive the second signaling.

[0233] Embodiment 5

[0234] Embodiment 5 illustrates a transmission flow chart between a first node N1 and a second node N2 according to an embodiment of the present application, as shown in FIG. 5, the steps in block F0 are optional.

[0235] For the first node N1, in response to any of the first set of conditions being satisfied in step S5101, a first wireless signal is transmitted; in step S5102, a response to the first wireless signal is monitored; in step S5103, it is determined whether the first AIoT device is nearby based on the monitoring.

[0236] In embodiment 5, the condition that the first AIoT device is determined to be nearby comprises that the response of the first wireless signal is successfully received; at least one condition in the first set of conditions depends on downlink quality of the first node; the response of the first wireless signal is sent by the first AIoT device.

[0237] As an embodiment, the response that any condition in the first set of conditions is met comprises determining that the any condition in the first set of conditions is met.

[0238] As an embodiment, the condition that the first AIoT device is determined to be nearby further comprises that reception quality of a signal from the first AIoT device exceeds a first threshold.

[0239] As an embodiment, for the first node N1, in step S5104, first signaling is sent, an indication of the first signaling depends on whether the response of the first wireless signal is successfully received; in step S5105, second signaling is received, the second signaling comprises configuration information of AIoT.

[0240] As an embodiment, for the second node N2, in step S5201, first signaling is received, an indication of the first signaling depends on whether the response of the first wireless signal is successfully received by the first node N1; in step S5202, second signaling is sent, the second signaling comprises configuration information of AIoT.

[0241] As an embodiment, the second signaling is triggered by the first signaling.

[0242] As an embodiment, the first node N1 and the second node N2 are a user equipment and an access network device (e.g. RAN device in embodiment 2) respectively.

[0243] As an embodiment, the first signaling and the second signaling are RRC messages.

[0244] As an embodiment, the first node N1 and the second node N2 are two user equipments (e.g. UEs in embodiment 2) respectively.

[0245] As an embodiment, the first signaling and the second signaling are PC5 messages.

[0246] As an embodiment, the first signaling and the second signaling are V2X messages.

[0247] As an embodiment, the first node N1 and the second node N2 are a user equipment and a core network device (e.g. core network device in embodiment 2) respectively.

[0248] As an embodiment, the first signaling and the second signaling are NAS messages.

[0249] As an embodiment, the first signaling and the second signaling are interface messages between the first node and an AIoT function controller.

[0250] As an embodiment, the first node N1 and the second node N2 are an access network device and a user equipment respectively.

[0251] As an embodiment, the first signaling and the second signaling are RRC messages.

[0252] As an embodiment, the first node N1 and the second node N2 are two access network devices respectively.

[0253] As an embodiment, the first signaling and the second signaling are XnAP messages.

[0254] As an embodiment, the first node N1 and the second node N2 are an access network device and a core network device respectively.

[0255] As an embodiment, the first signaling and the second signaling are NGAP messages.

[0256] As an embodiment, the user equipment is a terminal.

[0257] As an embodiment, the first signaling indicates that there is at least one AIoT device in the vicinity.

[0258] As an embodiment, the first signaling indicates that there is at least one AIoT device in the vicinity and the number of AIoT devices in the vicinity.

[0259] As an embodiment, the first signaling is used to request to migrate all or part of the AIoT devices in the vicinity.

[0260] As an embodiment, the migration refers to replacing a Reader that provides AIoT services for the AIoT devices in the vicinity.

[0261] As an embodiment, the first signaling includes context information of N AIoT devices in the vicinity; wherein N is a positive integer.

[0262] As an embodiment, the first signaling indicates that there is no AIoT device in the vicinity.

[0263] As an embodiment, the first signaling is used to request to obtain resource information used.

[0264] As an embodiment, the first signaling is used for requesting updating a state of working as a Reader.

[0265] As an embodiment, the context information of the AIoT device comprises at least one of the following: identification information of the AIoT device; location information of the AIoT device; identification information of the Reader; identification information of the AIoT function controller; AIoT service information that the AIoT device is in progress; resource information used by the AIoT device.

[0266] As an embodiment, the configuration information of the AIoT is used for confirming whether to allow migrating all or part of the AIoT devices in the vicinity of the first node.

[0267] As an embodiment, the configuration information of the AIoT comprises at least one of the following: identification information of M AIoT devices; identification information of P AIoT devices; identification information of the Reader allowing the migration of the M AIoT devices; wherein M and P are both positive integers.

[0268] As an embodiment, the M AIoT devices are AIoT devices allowed to migrate among the N AIoT devices in the vicinity of the first node.

[0269] As an embodiment, the P AIoT devices are AIoT devices not allowed to migrate among the N AIoT devices in the vicinity of the first node.

[0270] As an embodiment, the configuration information of the AIoT is used for indicating whether the first node continues to work as a Reader.

[0271] As an embodiment, the configuration information of the AIoT comprises resource information used by the first node.

[0272] As an embodiment, the resource information used by the first node comprises resource information used when working as a Reader.

[0273] Typically but not limitedly, refer to Embodiment 1 for examples of the resource.

[0274] As an embodiment, a first timer is started as a response of determining that the first AIoT device is in the vicinity based on the monitoring; the first timer is used for indicating a duration of maintaining connection with the first AIoT device.

[0275] As an embodiment, the first timer is determined by the first node N1.

[0276] As an embodiment, the first timer is determined by a management node of the first node N1.

[0277] As an embodiment, in response to the expiration of the first timer, releasing the connection for the first AIoT device.

[0278] As an embodiment, maintaining the connection with the first AIoT device means maintaining a wireless interface between the first AIoT device.

[0279] As an embodiment, maintaining the connection with the first AIoT device means maintaining or saving context information of the first AIoT device.

[0280] As an embodiment, the identification information of the AIoT device includes at least one of the following: an EPC (Electronic Product Code); a type of AIoT device; an AIoT device identifier; an AIoT device group identifier.

[0281] As an embodiment, the type of AIoT device is one of the following: Device 1; Device 2a; Device 2b.

[0282] As an embodiment, the AIoT device group includes at least one AIoT device.

[0283] As an embodiment, the location information of the AIoT device includes at least one of the following: a cell identifier of a cell where the AIoT device is located; a region identifier of a cell where the AIoT device is located; GNSS (Global Navigation Satellite System) information of the AIoT device; a cell identifier of a cell where a Reader of the AIoT device is located; a region identifier of a cell where the Reader of the AIoT device is located; GNSS information of the Reader of the AIoT device.

[0284] As an embodiment, the cell identifier includes at least one of the following: a PCI (Physical Cell Identity) of the cell; an NCGI (NR Cell Global Identifier) of the cell; a gNB ID managing the cell.

[0285] As an embodiment, the area identity comprises at least one of: a PLMN (Public Land Mobile Network) identity of the cell; a PNI-NPN (Public Network Integrated Non-Public Network) identity of the cell; a SNPN (Stand-alone Non-Public Network) identity of the cell; a CAG (Closed Access Group) identity of the cell; a TAI (Tracking Area Identity) of the cell; a TAC (Tracking Area Code) of the cell; a RANAC (RAN Area Code) of the cell; a TRP (Transmit / Receive Point) ID of the cell signal.

[0286] As an embodiment, the identification information of the Reader comprises at least one of: a Reader identity; a UE identity of the first node; a transport layer address of the Reader; a transport layer address of the first node.

[0287] As an embodiment, the identification information of the AIoT function controller comprises at least one of: an AIoT function controller identity; a core network identity controlling the AIoT function; a transport layer address of the AIoT function controller.

[0288] As an embodiment, the UE identity comprises at least one of: a C-RNTI (Cell Radio Network Temporary Identifier); a 5G-GUTI (5G Globally Unique Temporary Identifier); a SUPI (Subscription Permanent Identifier); a SUCI (Subscription Concealed Identifier); a GPSI (Generic Public Subscription Identifier); a PEI (Permanent Equipment Identifier).

[0289] As an embodiment, the transport layer address comprises at least one of: an IP address; a GTP-TEID (General Packet Radio Service Tunneling Protocol-Tunnel Endpoint Identifier).

[0290] As an embodiment, the core network identity is a GUAMI (Globally Unique Access and Mobility Management Function Identifier).

[0291] As an embodiment, the ongoing AIoT service information of the AIoT device comprises at least one of: an ongoing AIoT service type; a number of a last received data packet; a number of a last sent data packet.

[0292] As an embodiment, the ongoing AIoT service type is one of: Inventory; Command; Read; Write.

[0293] As an embodiment, the data packet comprises one of: a PDCP (Packet Data Convergence Protocol) based data packet; an IP based data packet; a data packet based on a protocol dedicated for transmission of AIoT data.

[0294] As an embodiment, in response to determining that the first AIoT device is not nearby based on the monitoring, releasing the connection for the first AIoT device.

[0295] As a sub-embodiment of the above embodiment, before the first node N1 performs step S5101, a connection between the first AIoT device and the first node N1 has been established.

[0296] As a sub-embodiment of the above embodiment, before the first node N1 performs step S5101, the first AIoT device and the first node N1 have interacted AIoT signaling or AIoT data.

[0297] As an embodiment, releasing the connection for the first AIoT device means removing a wireless interface with the first AIoT device.

[0298] As an embodiment, releasing the connection for the first AIoT device means removing the context information of the first AIoT device.

[0299] As an embodiment, releasing the connection for the first AIoT device means that the first node no longer provides proxy service for the first AIoT device.

[0300] As an embodiment, releasing the connection for the first AIoT device means that the first node no longer maintains the authorization of the proxy service of the first AIoT device.

[0301] Embodiment 6

[0302] Embodiment 6 illustrates a flowchart of the first signaling for requesting to migrate all or part of AIoT devices in the vicinity in the case that the second node is capable of working as a Reader according to an embodiment of the present application, as shown in FIG. 6, the step in block F1 is optional.

[0303] For the first node N1, in response to any condition in the first set of conditions being met in step S6101, a first wireless signal is sent; in response to monitoring the first wireless signal in step S6102, it is determined that the third node N3 is in the vicinity in step S6103.

[0304] For the third node N3, in step S6301, a first wireless signal is received; in response to sending the first wireless signal in step S6302.

[0305] For the first node N1, in step S6104, a first signaling is sent, the first signaling including context information of N AIoT devices in the vicinity; in step S6105, a second signaling is received, the second signaling including identification information of M AIoT devices.

[0306] For the second node N2, in step S6201, a first signaling is received, the first signaling including context information of N AIoT devices in the vicinity of the first node; in step S6202, a second signaling is sent, the second signaling including identification information of M AIoT devices.

[0307] As an embodiment, for the second node N2, in response to receiving the first signaling, in step S62011, a second wireless signal is sent; in response to monitoring the second wireless signal in step S62012, it is determined whether a second AIoT device is in the vicinity in step S62013.

[0308] As an embodiment, the first node N1 and the second node N2 are a user equipment and an access network device (e.g., RAN device in embodiment 2), respectively.

[0309] As an embodiment, the first node N1 and the second node N2 are two user equipments (e.g., UEs in embodiment 2), respectively.

[0310] As an embodiment, the first node N1 and the second node N2 are an access network device and a user equipment, respectively.

[0311] As an embodiment, the first node N1 and the second node N2 are two access network devices, respectively.

[0312] As an embodiment, the third node N3 is an AIoT device (e.g., AIoT device in embodiment 2).

[0313] As an embodiment, the user equipment is a terminal.

[0314] As an embodiment, the third node N3 is the first AIoT device.

[0315] As an embodiment, the response that any condition in the first set of conditions is met comprises determining that the any condition in the first set of conditions is met.

[0316] As an embodiment, the first signaling is used to request to migrate N nearby AIoT devices to other nodes capable of working as a Reader.

[0317] As an embodiment, the N nearby AIoT devices include the third node N3.

[0318] As an embodiment, the second signaling indicates whether to allow to migrate all or part of the N AIoT devices in the vicinity of the first node.

[0319] As an embodiment, the M AIoT devices are AIoT devices allowed to be migrated among the N AIoT devices in the vicinity of the first node.

[0320] As an embodiment, the second signaling further includes resource information used by the M AIoT devices.

[0321] As an embodiment, the second signaling further includes identification information of P AIoT devices.

[0322] As an embodiment, the P AIoT devices are AIoT devices not allowed to be migrated among the N AIoT devices in the vicinity of the first node.

[0323] As an embodiment, the first node N1 determines the condition of migrating the third node N3 as that the receiving quality of the signal from the third node N3 exceeds a threshold #5.

[0324] The above embodiment is advantageous to realize the load balancing of the first node N1 for AIoT devices and improve the efficiency of the first node N1 working as a Reader.

[0325] As an embodiment, the first node N1 determines the condition of migrating the third node N3 as that the receiving quality of the signal from the third node N3 does not exceed a threshold #5.

[0326] In the above embodiment, the third node N3 can be located at the edge of the signal coverage range of the first node N1, and migrating it to other Readers is advantageous to improve the transmission efficiency of the third node N3.

[0327] As an embodiment, the second node N2 is determined by the first node N1.

[0328] As an embodiment, the first node N1 determines that the second node N2 can work as a Reader based on the indication of the second node N2.

[0329] As an embodiment, the first node N1 and the second node N2 are respectively a user equipment and an access network equipment, or the first node N1 and the second node N2 are respectively an access network equipment and a user equipment, and the second node N2 indicates to the first node N1 that it can work as a Reader through an RRC message.

[0330] As a sub-embodiment of the above embodiment, the first node N1 and the second node N2 are respectively a user equipment and an access network equipment, and the second node N2 indicates to the first node N1 that it can work as a Reader through a broadcast message.

[0331] As a sub-embodiment of the above embodiment, the first node N1 and the second node N2 are respectively a user equipment and an access network equipment, and the second node N2 indicates to the first node N1 that it can work as a Reader through an RRC reconfiguration message.

[0332] As a sub-embodiment of the above-mentioned embodiment, the first node N1 and the second node N2 are respectively an access network device and a user equipment, and the second node N2 indicates to the first node N1 that it is capable of working as a Reader through a RRC Setup Request message or a UE Capability Information message.

[0333] As an embodiment, the first node N1 and the second node N2 are both access network devices, and the second node N2 indicates to the first node N1 that it is capable of working as a Reader through an XnAP message.

[0334] As a sub-embodiment of the above-mentioned embodiment, the second node N2 indicates to the first node N1 that it is capable of working as a Reader through an Xn Setup Request message or an Xn Setup Response message.

[0335] As a sub-embodiment of the above-mentioned embodiment, the second node N2 indicates to the first node N1 that it is capable of working as a Reader through an NG-RAN Node Configuration Update message or an NG-RAN Node Configuration Update Acknowledge message.

[0336] As an embodiment, the first node N1 and the second node N2 are both user equipments, and the second node N2 indicates to the first node N1 that it is capable of working as a Reader through a PC5 message or a V2X message.

[0337] As an embodiment, the second node N2 is determined by a management node of the first node N1.

[0338] As an embodiment, how the second node N2 determines whether the second AIoT device is nearby can refer to the method how the first node N1 determines whether the first AIoT device is nearby in Embodiment 1, and will not be described here.

[0339] The above-mentioned embodiments are beneficial for the second node N2 to determine whether to allow the requested AIoT device to migrate according to the load situation of the AIoT service of the second node N2, and to determine the AIoT device allowed to migrate in.

[0340] As an embodiment, the indication of the second signaling depends on whether the response of the second wireless signal is successfully received; in this embodiment, how the second node N2 determines whether the response of the second wireless signal is successfully received can refer to the method of how the first node N1 determines whether the response of the first wireless signal is successfully received in Embodiment 1, and will not be described here.

[0341] As an embodiment, the second AIoT device is the third node N3.

[0342] In the above embodiment, the second node N2 can further determine whether to allow the third node N3 to migrate in according to whether the third node N3 is nearby, thereby improving the accuracy of the second node N2 in providing AIoT services.

[0343] As an embodiment, as a response to receiving the second signaling, the first node N1 sends ongoing AIoT service information of the M AIoT devices to the second node N2.

[0344] The above embodiment is advantageous for the second node N2 to obtain instant service information of AIoT devices allowed to migrate, and is advantageous for guaranteeing service continuity of AIoT devices in the migration process.

[0345] As an embodiment, as a response to the second node N2 determining to allow the third node N3 to migrate, the third node N3 is included in the M AIoT devices.

[0346] As an embodiment, as a response to the second node N2 determining not to allow the third node N3 to migrate, the third node N3 is not included in the M AIoT devices.

[0347] As an embodiment, as a response to the second node N2 determining not to allow the third node N3 to migrate, the third node N3 is included in the P AIoT devices.

[0348] As an embodiment, the second node N2 performs an inventory process on the M AIoT devices.

[0349] As an embodiment, as a response to receiving the second signaling, the first node N1 releases connections for the M AIoT devices.

[0350] As an embodiment, as a response to receiving the second signaling from the second node N2 indicating to release the connections of the M AIoT devices, the first node N1 releases the connections for the M AIoT devices.

[0351] As an embodiment, the first node N1 indicates to the AIoT function controller that the M AIoT devices are migrated to the second node N2.

[0352] As an embodiment, the second node N2 indicates to the AIoT function controller that the M AIoT devices are migrated from the first node N1.

[0353] The above two embodiments are beneficial to align the understanding between the AIoT function controller and the Reader, AIoT device, so that the AIoT function controller can obtain the association between the Reader and the AIoT device in time, and improve the accuracy and flexibility of the AIoT service.

[0354] In embodiment 6, the first node can directly send a migration request of the AIoT device to the node capable of working as a Reader nearby, which is not only beneficial to load balancing of the first node and improving the service quality of the first node for the AIoT service, but also guarantees the service continuity of the AIoT device nearby the first node.

[0355] Embodiment 7

[0356] Embodiment 7 illustrates a flowchart of the first signaling for requesting migration of all or part of the AIoT devices nearby in the case that the second node is the management node of the first node according to an embodiment of the present application, as shown in FIG. 7, the step in block F2 is optional.

[0357] For the first node N1, in response to any condition in the first condition set being met in step S7101, a first wireless signal is sent; in response to monitoring the first wireless signal in step S7102, it is determined that the first AIoT device is nearby in step S7103; a first signaling is sent in step S7104, the first signaling is used for requesting migration of N AIoT devices nearby to other nodes capable of working as a Reader; and in step S7105, a second signaling is received, the second signaling indicates whether to allow migration of all or part of the N AIoT devices nearby the first node.

[0358] For the second node N2, in step S7201, a first signaling is received, the first signaling is used for requesting migration of N AIoT devices nearby the first node to other nodes capable of working as a Reader; and in step S7202, a second signaling is sent, the second signaling indicates whether to allow migration of all or part of the N AIoT devices nearby the first node.

[0359] As an embodiment, the first node N1 and the second node N2 are a user equipment and an access network device (e.g. the RAN device in Embodiment 2) respectively.

[0360] As an embodiment, the first node N1 and the second node N2 are a user equipment and a core network device (e.g. the core network device in Embodiment 2) respectively.

[0361] As an embodiment, the first node N1 and the second node N2 are an access network device and a core network device respectively.

[0362] As an embodiment, the user equipment is a terminal.

[0363] As an embodiment, the response that any condition in the first set of conditions is met comprises determining that the any condition in the first set of conditions is met.

[0364] As an embodiment, the first signaling comprises context information of N AIoT devices in the vicinity of the first node.

[0365] As an embodiment, the second signaling comprises identification information of a fourth node (i.e. the identification information of the Reader in Embodiment 5); wherein the fourth node is capable of working as a Reader.

[0366] As an embodiment, the second node N2 determines the fourth node.

[0367] As an embodiment, the second node N2 determines that the fourth node is capable of working as a Reader based on an indication of the fourth node.

[0368] As an embodiment, the second node N2 and the fourth node are an access network device and a user equipment respectively, and the fourth node indicates to the second node N2 that it is capable of working as a Reader through an RRC message; in this embodiment, the indication manner of the fourth node please refer to the example in Embodiment 6 that how the second node N2 indicates to the first node N1 that it is capable of working as a Reader through an RRC message when the first node N1 and the second node N2 are an access network device and a user equipment respectively, and no longer be elaborated.

[0369] As an embodiment, the second node N2 and the fourth node are both access network devices, and the fourth node indicates to the second node N2 that it is capable of working as a Reader through an XnAP message; in this embodiment, the indication manner of the fourth node please refer to the example of how the second node N2 indicates to the first node N1 that it is capable of working as a Reader through an XnAP message in the case that the first node N1 and the second node N2 are both access network devices in Embodiment 6, which will not be repeated here.

[0370] As an embodiment, the second node N2 and the fourth node are a core network device and a user equipment respectively, and the fourth node indicates to the second node N2 that it is capable of working as a Reader through a NAS message.

[0371] As a sub-embodiment of the above embodiment, the fourth node indicates to the second node N2 that it is capable of working as a Reader through a Registration Request message or a UE Configuration Update Complete message.

[0372] As an embodiment, the second node N2 and the fourth node are a core network device and a user equipment respectively, and the fourth node indicates to the second node N2 that it is capable of working as a Reader through an interface message between the AIoT function controller.

[0373] As an embodiment, the second node N2 and the fourth node are a core network device and an access network device respectively, and the fourth node indicates to the second node N2 that it is capable of working as a Reader through an NGAP message.

[0374] As a sub-embodiment of the above embodiment, the fourth node indicates to the second node N2 that it is capable of working as a Reader through an NG Setup Request message or a RAN Configuration Update message.

[0375] As an embodiment, the second node N2 and the fourth node are a core network device and an access network device respectively, and the fourth node indicates to the second node N2 that it is capable of working as a Reader through an interface message between the AIoT function controller.

[0376] As an embodiment, the second node N2 determines the fourth node as a Reader that allows M AIoT devices to migrate.

[0377] As an embodiment, the second signaling comprises at least one of: identification information of the M AIoT devices; resource information used by the M AIoT devices; identification information of the P AIoT devices.

[0378] As an embodiment, the M AIoT devices are AIoT devices allowed to migrate among the N AIoT devices in the vicinity of the first node.

[0379] As an embodiment, the P AIoT devices are AIoT devices not allowed to migrate among the N AIoT devices in the vicinity of the first node.

[0380] As an embodiment, in response to receiving the identification information of the fourth node, the first node N1 sends, to the fourth node, context information of the N AIoT devices in the vicinity of the first node.

[0381] As an embodiment, in response to determining the response of the fourth node, the second node N2 sends, to the fourth node, context information of the Q AIoT devices in the vicinity of the first node in step S72011.

[0382] As an embodiment, the Q AIoT devices are included in the N AIoT devices in the vicinity of the first node.

[0383] In the above embodiment, the second node N2 can flexibly allocate AIoT devices that need to be migrated based on the perception of other Readers, which is conducive to reducing the processing complexity of Readers and improving the efficiency of AIoT services.

[0384] As an embodiment, in response to receiving the context information of the Q AIoT devices in the vicinity of the first node, the fourth node sends, to the second node N2, at least one of: identification information of the M AIoT devices; resource information used by the M AIoT devices; identification information of the P AIoT devices.

[0385] As a sub-embodiment of the above embodiment, the M AIoT devices are AIoT devices allowed to migrate among the Q AIoT devices in the vicinity of the first node.

[0386] As a sub-embodiment of the above embodiment, the P AIoT devices are AIoT devices not allowed to migrate among the Q AIoT devices in the vicinity of the first node.

[0387] As an embodiment, in response to receiving the context information of the N AIoT devices in the vicinity of the first node, the fourth node sends at least one of the following to the first node N1: identification information of the M AIoT devices; resource information used by the M AIoT devices; identification information of the P AIoT devices.

[0388] As an embodiment, in response to receiving the context information of the AIoT devices in the vicinity of the first node, the subsequent behavior of the fourth node refers to the relevant description of steps S62011 to S62013 of the second node N2 in Embodiment 6.

[0389] As an embodiment, the fourth node performs an Inventory procedure for the M AIoT devices.

[0390] As an embodiment, in response to receiving the identification information of the M AIoT devices or receiving information indicating release of the connection of the M AIoT devices, the first node N1 releases the connection for the M AIoT devices.

[0391] As an embodiment, the information indicating release of the connection of the M AIoT devices comes from the second node N2.

[0392] As an embodiment, the information indicating release of the connection of the M AIoT devices comes from the fourth node.

[0393] In Embodiment 7, the first node sends a migration request to the management node of the first node, which can reduce the processing complexity of the first node and achieve load balancing of the first node, and is conducive to improving the service quality of the first node for AIoT services and ensuring the service continuity of the AIoT devices in the vicinity of the first node.

[0394] Embodiment 8

[0395] Embodiment 8 illustrates a flowchart of the first node sending the first signaling in response to determining that there is no AIoT device in the vicinity according to an embodiment of the present application, as shown in FIG. 8.

[0396] For the first node N1, in step S8101, in response to any condition in the first condition set being met, a first wireless signal is sent; in step S8102, the first wireless signal is monitored in response; in step S8103, it is determined that there is no AIoT device in the vicinity; in step S8104, in response to the any condition not being the first condition, a first signaling is sent, the first signaling indicating that there is no AIoT device in the vicinity; in step S8105, a second signaling is received, the second signaling indicating de-authorization of AIoT functions.

[0397] For the second node N2, receiving a first signaling in step S8201, the first signaling indicating that there is no any AIoT device in the vicinity of the first node; sending a second signaling in step S8202, the second signaling indicating de-authorization of AIoT function.

[0398] As one embodiment, the second node N2 is a management node of the first node.

[0399] As one embodiment, the first node N1 and the second node N2 are respectively a user equipment and a core network device (e.g. the core network device in embodiment 2).

[0400] As one embodiment, the response that any condition in the first set of conditions is met includes: determining that the any condition in the first set of conditions is met.

[0401] As one embodiment, the first signaling or the second signaling is sent through a NAS message.

[0402] As one sub-embodiment of the above embodiment, the first signaling is a registration request message, and the second signaling is a registration accept (Registration Accept) message.

[0403] As one sub-embodiment of the above embodiment, the first signaling is an uplink NAS transport (UL NAS Transport) message, and the second signaling is a downlink NAS transport (DL NAS Trasnsport) message.

[0404] As one embodiment, the first signaling or the second signaling is sent through an interface message between an AIoT function controller.

[0405] As one embodiment, the first signaling or the second signaling is sent through an RRC message and an NGAP message.

[0406] As one sub-embodiment of the above embodiment, the first signaling includes an RRC setup complete (RRC Setup Complete) message and an initial UE message (Initial UE Message) message, and the second signaling includes an RRC reconfiguration message and an initial context setup request (Initial Context Setup Request) message.

[0407] As a sub-embodiment of the above-mentioned embodiment, the first signaling comprises an Uplink Information Transfer message and an Uplink NAS Transport message, and the second signaling comprises a Downlink Information Transfer message and a Downlink NAS Transport message.

[0408] As an embodiment, the first signaling or the second signaling is sent through RRC messages and interface messages between the access network device and the AIoT function controller.

[0409] As an embodiment, the first node N1 and the second node N2 are an access network device and a core network device respectively.

[0410] As an embodiment, the first signaling or the second signaling is sent through NGAP messages.

[0411] As a sub-embodiment of the above-mentioned embodiment, the first signaling is an NG Setup Request message, and the second signaling is an NG Setup Response message.

[0412] As a sub-embodiment of the above-mentioned embodiment, the first signaling is a RAN Configuration Update message, and the second signaling is a RAN Configuration Update Acknowledge message.

[0413] As an embodiment, the first signaling or the second signaling is sent through interface messages between the access network device and the AIoT function controller.

[0414] As an embodiment, the first node N1 and the second node N2 are a user equipment and an access network device respectively.

[0415] As an embodiment, the first signaling or the second signaling is sent through RRC messages.

[0416] As a sub-embodiment of the above-mentioned embodiment, the first signaling is an RRC Setup Complete message, and the second signaling is an RRC Reconfiguration message.

[0417] As a sub-embodiment of the above-mentioned embodiment, the first signaling is a Measurement Report message, and the second signaling is an RRC Reconfiguration message.

[0418] As a sub-embodiment of the above-mentioned embodiment, the first signaling is a UE Assistance Information message, and the second signaling is an RRC Reconfiguration message.

[0419] As an embodiment, the user equipment is a terminal.

[0420] As an embodiment, the first signaling is used to request to update a state of working as a Reader.

[0421] As an embodiment, the first signaling is used to determine to de-authorize an AIoT function.

[0422] As an embodiment, the first signaling is used to request to de-authorize an AIoT function.

[0423] As an embodiment, the first condition is that an AIoT function is indicated to be de-authorized.

[0424] As an embodiment, in response to sending the second signaling, the second node N2 releases a connection for the first node N1.

[0425] As an embodiment, the second node N2 releasing the connection for the first node N1 means that the second node N2 removes an interface between the second node N2 and the first node N1.

[0426] As an embodiment, the second node N2 releasing the connection for the first node N1 means that the second node N2 removes a tunnel between the second node N2 and the first node N1.

[0427] As an embodiment, the second node N2 releasing the connection for the first node N1 means that the second node N2 removes context information of the first node N1.

[0428] As an embodiment, the second node N2 releasing the connection for the first node N1 means that the second node N2 no longer provides a proxy service for the first node N1.

[0429] As an embodiment, the second node N2 releasing the connection for the first node N1 means that the second node N2 no longer maintains authorization of a proxy service of the first node N1.

[0430] In embodiment 8, the first node sends first signaling indicating that there is no any AIoT device nearby to a management node of the first node, which can assist the management device of the first node to manage a Reader authorization state of the first node according to the first signaling, and is conducive to reducing processing complexity and power consumption of the first node.

[0431] Embodiment 9

[0432] Embodiment 9 illustrates a flowchart of sending the first signaling under the condition that the first node is instructed to de-authorized AIoT function and there is at least one AIoT device in the vicinity of the first node according to one embodiment of the present application, as shown in FIG. 9.

[0433] For the first node, in response to the condition that the first node is de-authorized AIoT function being met, a first wireless signal is sent in step 901; the first wireless signal is monitored in step 902; it is determined that there is a first AIoT device in the vicinity in step 903; the first signaling is sent in step 904, the first signaling is used to request to migrate N AIoT devices in the vicinity to other nodes capable of working as a Reader; the second signaling is received in step 905, the second signaling indicates whether to allow to migrate all or part of the N AIoT devices in the vicinity of the first node.

[0434] As one embodiment, the first node is a user equipment (for example, UE in embodiment 2).

[0435] As one embodiment, the first node is an access network device (for example, RAN device in embodiment 2).

[0436] As one embodiment, the user equipment is a terminal.

[0437] As one embodiment, the response that the condition that the first node is de-authorized AIoT function is met includes: determining that the condition that the first node is de-authorized AIoT function is met.

[0438] As one embodiment, the first node determines that the condition that the first node is de-authorized AIoT function is met based on first indication information; wherein the first indication information indicates de-authorized AIoT function.

[0439] As one embodiment, the first indication information is from a management node of the first node.

[0440] As one embodiment, the first node and the management node of the first node are user equipment and core network device respectively.

[0441] As one embodiment, the first indication information is received through a NAS message.

[0442] As one sub-embodiment of the above-mentioned embodiment, the first indication information is received through a UE Configuration Update Command message.

[0443] As an embodiment, the first indication information is received through an interface message between the AIoT function controller.

[0444] As an embodiment, the first indication information is received through an RRC message and an NGAP message.

[0445] As a sub-embodiment of the above-mentioned embodiment, the first indication information is received through a downlink information forwarding message and a downlink NAS transport message.

[0446] As an embodiment, the first indication information is received through an RRC message and an interface message between the access network device and the AIoT function controller.

[0447] As an embodiment, the first node and the management node of the first node are an access network device and a core network device, respectively.

[0448] As an embodiment, the first indication information is received through an NGAP message.

[0449] As a sub-embodiment of the above-mentioned embodiment, the first indication information is received through an AMF Configuration Update message.

[0450] As an embodiment, the first indication information is received through an interface message between the access network device and the AIoT function controller.

[0451] As an embodiment, the first node and the management node of the first node are a user equipment and an access network device, respectively.

[0452] As an embodiment, the first indication information is received through an RRC message.

[0453] As a sub-embodiment of the above-mentioned embodiment, the first indication information is received through an RRC Reconfiguration message.

[0454] As an embodiment, the second node is a node capable of working as a Reader, and the step 904 and the step 905 refer to the related description of the step S6104 and the step S6105 in Embodiment 6; the behavior of the second node refers to the related description of the step S6201, the step S62011, the step S62012, the step S62013 and the step S6202 in Embodiment 6.

[0455] As an embodiment, the second node is a management node of the first node, and the steps 904 and 905 refer to the related descriptions of the steps S7104 and S7105 in Embodiment 7; the behavior of the second node refers to the related descriptions of the steps S7201, S72011 and S7202 in Embodiment 7.

[0456] As an embodiment, the first indication information includes identification information of the fourth node; the definition of the fourth node refers to

[0457] Embodiment 7.

[0458] As an embodiment, the N AIoT devices in the vicinity are all AIoT devices in the vicinity.

[0459] Embodiment 9 can avoid AIoT service interruption of AIoT devices in the vicinity of the first node due to the de-authorization of AIoT functions of the first node, and ensure the service continuity of the AIoT devices.

[0460] Embodiment 10

[0461] Embodiment 10 illustrates a flowchart of sending the first signaling under the condition that the first node requests to de-authorize AIoT functions and there are at least one AIoT device in the vicinity of the first node according to an embodiment of the present application, as shown in FIG. 10. In FIG. 10, the dashed box represents an optional step.

[0462] For the first node, in response to the condition of being de-authorized AIoT functions being met in step 1001, a first wireless signal is sent; in response to monitoring the first wireless signal in step 1002, it is determined that the first AIoT device is in the vicinity in step 1003; the first signaling is sent in step 1004, the first signaling is used to request to migrate N AIoT devices in the vicinity to other nodes capable of working as a Reader; the second signaling is received in step 1005, the second signaling indicates whether to allow migrating all or part of the N AIoT devices in the vicinity of the first node; and the second indication information is sent in step 1006, the second indication information is used to request to de-authorize AIoT functions.

[0463] As an embodiment, the first node is a user equipment (for example, UE in Embodiment 2).

[0464] As an embodiment, the first node is an access network device (for example, RAN device in Embodiment 2).

[0465] As an embodiment, the user equipment is a terminal.

[0466] As an embodiment, the response to the condition of being de-authorized AIoT function being met comprises determining the condition of being de-authorized AIoT function being met.

[0467] As an embodiment, the first node determines the condition of being de-authorized AIoT function being met based on third indication information; wherein the third indication information indicates requesting de-authorization of AIoT function.

[0468] As an embodiment, the first node receives the third indication information from a higher layer.

[0469] As an embodiment, a NAS sublayer of the first node provides the third indication information to an AS sublayer of the first node.

[0470] As an embodiment, an AIoT sublayer of the first node provides the third indication information to the AS sublayer of the first node.

[0471] As an embodiment, the second indication information is sent to a management node of the first node.

[0472] As an embodiment, in response to receiving the second indication information, the management node of the first node sends first indication information, the first indication information indicating de-authorization of AIoT function.

[0473] As an embodiment, the first node receives the first indication information in step 1007.

[0474] As an embodiment, the first node and the management node of the first node are user equipment and core network equipment respectively.

[0475] As an embodiment, the second indication information is sent through a NAS message.

[0476] As a sub-embodiment of the above embodiment, the second indication information is sent through an uplink NAS transmission message.

[0477] As an embodiment, the second indication information is sent through an interface message between an AIoT function controller.

[0478] As an embodiment, the second indication information is sent through an RRC message and an NGAP message.

[0479] As a sub-embodiment of the above embodiment, the second indication information is sent through an uplink information forwarding message and an uplink NAS transmission message.

[0480] As an embodiment, the second indication information is sent through an RRC message and an interface message between an access network device and an AIoT function controller.

[0481] As an embodiment, the first node and the management node of the first node are an access network device and a core network device respectively.

[0482] As an embodiment, the second indication information is sent through an NGAP message.

[0483] As a sub-embodiment of the above-mentioned embodiment, the second indication information is sent through a RAN configuration update message.

[0484] As an embodiment, the second indication information is sent through an interface message between an access network device and an AIoT function controller.

[0485] As an embodiment, the first node and the management node of the first node are a user equipment and an access network device respectively.

[0486] As an embodiment, the second indication information is sent through an RRC message.

[0487] As a sub-embodiment of the above-mentioned embodiment, the second indication information is sent through a measurement report message.

[0488] As a sub-embodiment of the above-mentioned embodiment, the second indication information is sent through a UE assistance information message.

[0489] As an embodiment, the second node is a node capable of working as a Reader, and the step 1004 and the step 1005 refer to the related description of the step S6104 and the step S6105 in Embodiment 6; the behavior of the second node refers to the related description of the step S6201, the step S62011, the step S62012, the step S62013 and the step S6202 in Embodiment 6.

[0490] As an embodiment, the second node is a management node of the first node, and the step 1004 and the step 1005 refer to the related description of the step S7104 and the step S7105 in Embodiment 7; the behavior of the second node refers to the related description of the step S7201, S72011 and the step S7202 in Embodiment 7.

[0491] As a sub-embodiment of the above-mentioned embodiment, the first signaling includes the second indication information.

[0492] As a sub-embodiment of the above-mentioned embodiment, as a response to the first signaling including the second indication information, the second signaling includes the first indication information.

[0493] As an embodiment, the N nearby AIoT devices are all nearby AIoT devices.

[0494] As an embodiment, the second indication information is sent as a response to releasing the connection for the AIoT device allowed to migrate.

[0495] Embodiment 10 can avoid AIoT service interruption of AIoT devices in the vicinity of the first node due to the first node requesting to de- authorize AIoT functions, and ensure service continuity of the AIoT devices.

[0496] Embodiment 11

[0497] Embodiment 11 illustrates a flowchart of sending the first signaling in the source cell under the condition that the first node is a user equipment according to an embodiment of the present application, as shown in FIG. 11. In FIG. 11, the dashed box represents an optional step.

[0498] For the first node, in step S1101, the first wireless signal is sent as a response to the second condition being met; in step S1102, the first wireless signal is monitored in response; in step S1103, it is determined whether there is at least one AIoT device in the vicinity, and if there is, step S11041 is executed, and if not, step S11042 is executed; in step S11041, the first signaling is sent, indicating that there is at least one AIoT device in the vicinity; in step S11042, the first signaling is sent, indicating that there is no AIoT device in the vicinity.

[0499] As an embodiment, the user equipment is a terminal.

[0500] As an embodiment, the second condition is any of the following conditions: the serving cell is worse than a second threshold; the neighboring cell is better than a first offset value of the special cell; the neighboring cell is better than a third threshold; the special cell is worse than a fourth threshold and the neighboring cell or the secondary cell is better than a fifth threshold; the neighboring cell is better than a second offset value of the secondary cell; at least one conditional handover (CHO) candidate cell meets the corresponding CHO execution condition; a handover procedure is triggered.

[0501] As an embodiment, the response that the second condition is met includes: determining that the second condition is met.

[0502] As an embodiment, in response to determining that there is at least one AIoT device in the vicinity, the first node starts a first timer in step S11031, the first timer being used to indicate the duration of maintaining the connection with the AIoT device in the vicinity.

[0503] As an embodiment, in response to determining that there is at least one AIoT device in the vicinity that is currently performing an AIoT service, the first node starts the first timer in step S11031.

[0504] As an embodiment, the first timer is pre-configured.

[0505] As an embodiment, the first timer is determined by the first node.

[0506] As an embodiment, the information of the first timer is received from a management node of the first node.

[0507] As an embodiment, for the step S11041, the first signaling comprises a sub-signaling for indicating at least one of the following: selecting a cell supporting Reader work as a target cell (sub-signaling #1); requesting to obtain resource information used (sub-signaling #2); requesting to migrate all or part of AIoT devices nearby (sub-signaling #3).

[0508] As an embodiment, the support of Reader work refers to the support of allocating resources for Readers.

[0509] As an embodiment, the sub-signaling #2 comprises context information of at least one AIoT device nearby the first node.

[0510] The above embodiments are beneficial for assisting the network to update resource information allocated for the first node.

[0511] As an embodiment, the sub-signaling #2 indicates to maintain or save the context information of the first node.

[0512] As an embodiment, the first node saves the context information of the first node in the source cell.

[0513] The above two embodiments are beneficial for the first node to quickly obtain resources for AIoT services in the case of moving back to the source cell again, and ensure the quality of service for AIoT services.

[0514] As an embodiment, the context information of the first node comprises at least one of the following: context information of at least one AIoT device nearby the first node; Reader authorization status of the first node; resource information used by the first node in the source cell.

[0515] As an embodiment, the sub-signaling #2 is sent in response to starting the first timer.

[0516] As an embodiment, the sub-signaling #2 comprises a time length for maintaining or saving the context information of the first node.

[0517] As an embodiment, the first node receives a second signaling from a second node.

[0518] As one embodiment, the second node comprises an access network device managing the source cell.

[0519] As one sub-embodiment of the above embodiment, the second node is an access network device managing the source cell.

[0520] As one sub-embodiment of the above embodiment, the first node sends the sub-signaling #1 to the second node, the second signaling comprising information of target cells supporting Reader operation.

[0521] As one sub-embodiment of the above embodiment, the target cell indicates to the second node that it supports Reader operation via an XnAP message.

[0522] As one sub-embodiment of the above embodiment, the target cell indicates to the second node that it supports Reader operation via an Xn setup request message or an Xn setup response message.

[0523] As one sub-embodiment of the above embodiment, the core network device indicates to the second node the information of the target cells supporting Reader operation.

[0524] As one sub-embodiment of the above embodiment, the core network device indicates to the second node the information of the target cells supporting Reader operation via an AMF configuration update message.

[0525] As one sub-embodiment of the above embodiment, the information of the target cells supporting Reader operation comprises resource information used by the first node in the target cells.

[0526] As one sub-embodiment of the above embodiment, in response to receiving the sub-signaling #1, the second node sends the context information of the first node to the target cells; typically but not limited to, the second node sends the context information of the first node to the target cells via a Handover Request message.

[0527] The above sub-embodiment is beneficial for the target cells to determine the resource information allocated for the first node.

[0528] As one sub-embodiment of the above embodiment, the first node sends the sub-signaling #2 to the second node, the second signaling comprising resource information used by the first node.

[0529] As a sub-embodiment of the above-mentioned embodiment, the first node sends the sub-signaling #2 to the second node, and the second signaling is used to confirm that the context information of the first node is maintained or saved for the first node.

[0530] As a sub-embodiment of the above-mentioned embodiment, the first node sends the sub-signaling #1 and the sub-signaling #2 to the second node.

[0531] As an embodiment, the second node comprises a node capable of working as a Reader.

[0532] As a sub-embodiment of the above-mentioned embodiment, the second node is a node capable of working as a Reader.

[0533] As a sub-embodiment of the above-mentioned embodiment, the first node sends the sub-signaling #3 to the second node; wherein, the sub-signaling #3 can refer to the related description of the first signaling in Embodiment 6, and the second signaling and the behavior of the second node can refer to Embodiment 6.

[0534] As an embodiment, the second node comprises a core network device of the first node.

[0535] As a sub-embodiment of the above-mentioned embodiment, the second node is a core network device of the first node.

[0536] As a sub-embodiment of the above-mentioned embodiment, the first node sends the sub-signaling #3 to the second node; wherein, the sub-signaling #3 can refer to the related description of the first signaling in Embodiment 7, and the second signaling and the behavior of the second node can refer to Embodiment 7.

[0537] As an embodiment, the first node performs step S11042, that is, the first node sends the first signaling to the second node; wherein, the first signaling and the second signaling can refer to Embodiment 8.

[0538] In the above-mentioned embodiment, the second node can release the resources allocated for the first node working as a Reader based on the first signaling, which is beneficial to improve the resource utilization of the second node.

[0539] As an embodiment, the access network device of the source cell is capable of working as a Reader.

[0540] As an embodiment, the source cell is capable of working as a Reader.

[0541] As an embodiment, the order between the step S11031 and the step S11041 can be adjusted, for example, S11041 can occur before S11031, or there is overlap in the time of occurrence of the two.

[0542] As an embodiment, in response to receiving the information of the target cell supporting Reader operation, the first timer stops timing.

[0543] As an embodiment, in response to the expiration of the first timer, the connection to the at least one AIoT device in the vicinity is released.

[0544] As an embodiment, in response to releasing the connection to the at least one AIoT device in the vicinity, the first node performs the step S11042.

[0545] As an embodiment, in response to the expiration of the first timer, the first node repeats the step S1102 and step S1103, thereby determining to perform step S11041 or step S11042.

[0546] In embodiment 11, the first node can respond in time when the handover is about to occur, which is conducive to avoiding the interruption of AIoT services caused by the handover process of the first node, thereby improving the business continuity of AIoT services.

[0547] Embodiment 12

[0548] Embodiment 12 illustrates a flowchart of sending the first signaling in the target cell under the condition that the first node is a user equipment according to an embodiment of the present application, as shown in FIG. 12.

[0549] For the first node, in response to the third condition being met in step S1201, a first wireless signal is sent; in response to monitoring the first wireless signal in step S1202; in step S1203, it is determined whether there is at least one AIoT device in the vicinity, if there is, step S12041 is performed, if not, step S12042 is performed; in step S12041, the first signaling is sent, the first signaling indicates that there is at least one AIoT device in the vicinity; in step S12042, the first signaling is sent, the first signaling indicates that there is no AIoT device in the vicinity.

[0550] As an embodiment, the user equipment is a terminal.

[0551] As an embodiment, the response to the third condition being met includes: determining that the third condition is met.

[0552] As one embodiment, the third condition is any one of the following: handover procedure is completed; RRC connection re-establishment occurs.

[0553] As one embodiment, for the step S12041, the first signaling comprises a sub-signaling for indicating at least one of the following: requesting to acquire resource information used (sub-signaling #2); requesting to migrate all or part of AIoT devices in the vicinity (sub-signaling #3).

[0554] As one embodiment, the sub-signaling #2 comprises context information of the first node.

[0555] As one embodiment, the context information of the first node comprises at least one of the following: context information of at least one AIoT device in the vicinity of the first node; Reader authorization status of the first node; resource information recently used by the first node (in the source cell or in the last serving cell).

[0556] As one embodiment, the sub-signaling #2 is used to request to allocate resources for the first node.

[0557] As one embodiment, the second node comprises an access network device managing the target cell.

[0558] As one sub-embodiment of the above embodiment, the second node is an access network device managing the target cell.

[0559] As one sub-embodiment of the above embodiment, the first node sends the sub-signaling #2 to the second node, and the second signaling comprises resource information used by the first node.

[0560] As one sub-embodiment of the above embodiment, the resource information used by the first node depends on the context information of the first node.

[0561] As one sub-embodiment of the above embodiment, the second node receives the context information of the first node from the source cell; typically but not limited to, the second node receives the context information of the first node from the source cell through a handover request message.

[0562] As one sub-embodiment of the above embodiment, the second node receives the context information of the first node from the last serving base station (Last serving gNB); typically but not limited to, the target cell receives the context information of the first node from the last serving base station through a Retrieve UE Context Response message.

[0563] As a sub-implementation of the above embodiment, in response to receiving the sub-signaling #2, the second node sends a fourth indication information to the core network device of the first node; wherein, the fourth indication information includes at least one of the following: the cell identifier of the target cell; and the context information of at least one AIoT device near the first node.

[0564] The above sub-implementation is beneficial for assisting the management node of the first node in completing the handover process at the first node and scheduling the first node and the AIoT devices near the first node in real time.

[0565] As a sub-example of the above embodiment, the second node sends the fourth indication information via NGAP message.

[0566] As a sub-example of the above embodiment, the second node sends the fourth indication information through a Path Switch Request message.

[0567] As a sub-implementation of the above embodiment, the second node sends the fourth indication information through an interface message with the AIoT function controller.

[0568] As a sub-implementation of the above embodiments, the fourth indication information is used to update the Reader authorization status of the first node.

[0569] As a sub-implementation of the above embodiments, the fourth indication information is used to update the information of the access network device connected to the first node.

[0570] As one embodiment, the second node includes a node capable of functioning as a Reader.

[0571] As a sub-implementation of the above embodiment, the second node is a node that can function as a Reader.

[0572] As a sub-implementation of the above embodiment, the first node sends the sub-signaling #3 to the second node; wherein, for an example of the sub-signaling #3, please refer to the relevant description of the first signaling in Embodiment 6, and for an example of the second signaling and the behavior of the second node, please refer to Embodiment 6.

[0573] As an example, the target cell is the cell that the first node accesses after switching from the source cell.

[0574] As an example, the target cell is the cell in which the first node initiates the RRC re-establishment procedure.

[0575] As an example, the target cell supports Reader operation.

[0576] As an embodiment, the supporting the Reader operation refers to supporting allocating resources for the Reader.

[0577] As an embodiment, the second node comprises a core network device of the first node.

[0578] As a sub-embodiment of the above embodiment, the second node is a core network device of the first node.

[0579] As a sub-embodiment of the above embodiment, the first node sends the sub-signaling #3 to the second node; wherein, examples of the sub-signaling #3 refer to the related description of the first signaling in Embodiment 7, and examples of the second signaling and the behavior of the second node refer to Embodiment 7.

[0580] As an embodiment, the first node performs step S12042, that is, the first node sends the first signaling to the second node; wherein, examples of the first signaling and the second signaling refer to Embodiment 8.

[0581] In the above embodiment, in the case that the second node is an access network device managing the target cell, the target cell will not allocate resources used when working as a Reader to the first node even if it determines that the first node supports the Reader function based on the first signaling, avoiding unnecessary waste of resources.

[0582] As an embodiment, the access network device of the target cell can work as a Reader.

[0583] As an embodiment, the target cell can work as a Reader.

[0584] As an embodiment, the first signaling comprises an RRC reestablishment completion message, and the second signaling comprises an RRC reconfiguration message.

[0585] As an embodiment, the first signaling is an RRC reestablishment completion message, and the second signaling is an RRC reconfiguration message.

[0586] In Embodiment 12, the first node can respond in time when the handover process occurs or the RRC connection is reestablished, which is conducive to improving the business continuity of AIoT services and realizing the load balancing of the first node working as a Reader.

[0587] Embodiment 13

[0588] Embodiment 13 illustrates a flowchart of the subsequent behavior of the first node under the condition that the first node is a user equipment and the RRC connection failure occurs according to an embodiment of the present application, as shown in FIG. 13. In FIG. 13, the dashed box represents an optional step.

[0589] For the first node, in step S1301, a first wireless signal is sent in response to the RRC connection failure; in step S1302, a response to the first wireless signal is monitored; in step S1303, it is determined whether there is at least one AIoT device in the vicinity, and if so, step S1304 is performed; in step S1304, a RRC reestablishment request message is sent to a cell supporting Reader operation.

[0590] As an embodiment, the user equipment is a terminal.

[0591] As an embodiment, the response to the RRC connection failure includes determining that the RRC connection failure occurs.

[0592] As an embodiment, in response to determining that there is at least one AIoT device in the vicinity, the first node starts a first timer in step S13031, the first timer being used to indicate the duration of maintaining connection with the AIoT device in the vicinity.

[0593] As an embodiment, in response to determining that there is at least one AIoT device in the vicinity that is currently providing AIoT service, the first node starts the first timer in step S13031.

[0594] As an embodiment, the first timer is pre-configured.

[0595] As an embodiment, the first timer is determined by the first node.

[0596] As an embodiment, the information of the first timer is received from a management node of the first node.

[0597] As an embodiment, the information of the first timer is received from a recently served base station.

[0598] As an embodiment, the sequence between step S13031 and step S1304 can be adjusted, for example, S1304 can occur before S13031, or there is overlap between the two.

[0599] As an embodiment, in response to the completion of the RRC connection reestablishment, the first timer stops timing.

[0600] As one embodiment, in response to the expiration of the first timer, releasing the connection to the at least one AIoT device in the vicinity.

[0601] As one embodiment, the sending of the RRC reestablishment request message to the cell supporting Reader operation comprises determining the cell supporting Reader operation.

[0602] As one embodiment, the first node determines the cell supporting Reader operation according to the broadcast message.

[0603] As one embodiment, the first signaling comprises an RRC reestablishment request message, and the second signaling comprises an RRC reestablishment message.

[0604] As one embodiment, the first signaling is an RRC reestablishment request message, and the second signaling is an RRC reestablishment message.

[0605] As one embodiment, the first signaling indicates the content as described in step S12041 of Embodiment 12; correspondingly, the behavior of the node receiving the first signaling is as described in the behavior of the second node in Embodiment 12.

[0606] As one embodiment, in response to the determination in step S1303 that there is no AIoT device in the vicinity, the first node sends an RRC reestablishment request message to a suitable cell.

[0607] Embodiment 13 can assist the first node to initiate the RRC connection reestablishment procedure, and to select a cell supporting Reader operation in priority according to the presence of AIoT devices in the vicinity, which is conducive to improving the continuity and accuracy of the AIoT service provided by the first node.

[0608] Embodiment 14

[0609] Embodiment 14 illustrates a structural block diagram of a processing apparatus in a first node according to one embodiment of the present application; as shown in FIG. 14. In FIG. 14, the processing apparatus 1400 in the first node comprises a first processor 1401.

[0610] The first processor 1401, in response to any condition in the first condition set being met, sends a first wireless signal and monitors a response to the first wireless signal; determines whether a first AIoT device is in the vicinity based on the monitoring; wherein the condition that the first AIoT device is determined to be in the vicinity comprises that the response to the first wireless signal is successfully received; at least one condition in the first condition set depends on the downlink quality of the first node; the response to the first wireless signal is sent by the first AIoT device.

[0611] As an embodiment, the condition that the first AIoT device is determined to be nearby further comprises: a reception quality of a signal from the first AIoT device exceeds a first threshold.

[0612] As an embodiment, the first processor 1401 sends a first signaling, and an indication of the first signaling depends on whether the response to the first wireless signal is successfully received.

[0613] As an embodiment, the first processor 1401 receives a second signaling, and the second signaling comprises configuration information of AIoT; wherein the second signaling is triggered by the first signaling.

[0614] As an embodiment, as a response of determining that the first AIoT device is nearby based on the monitoring, the first processor 1401 starts a first timer; wherein the first timer is used to indicate a time length of maintaining a connection with the first AIoT device.

[0615] As an embodiment, as a response of determining that the first AIoT device is not nearby based on the monitoring, the first processor 1401 releases the connection for the first AIoT device.

[0616] As an embodiment, the first condition set comprises at least one of the following conditions: resource overload; de-authorized AIoT function.

[0617] As an embodiment, the at least one condition in the first condition set comprises at least one of the following conditions: a serving cell is worse than a second threshold; a neighbor cell is better than a first offset value of a special cell; the neighbor cell is better than a third threshold; the special cell is worse than a fourth threshold and the neighbor cell or a secondary cell is better than a fifth threshold; the neighbor cell is better than a second offset value of the secondary cell; at least one condition handover CHO candidate cell satisfies a corresponding CHO execution condition; radio resource control RRC connection failure occurs.

[0618] As an embodiment, the first condition set comprises at least one of the following conditions: handover occurs; RRC connection re-establishment occurs.

[0619] As an embodiment, the first node is a user equipment.

[0620] As an embodiment, the user equipment is a terminal.

[0621] As an embodiment, the first node is a relay node device.

[0622] As one example, the first processing machine 1401 includes {antenna 452, receiver 454, receive processor 456, multi-antenna receive processor 458, controller / processor 459, memory 460, data source 467} of embodiment 4.

[0623] As one example, the first processing machine 1401 includes {antenna 452, receiver 454, receive processor 456, multi-antenna receive processor 458, controller / processor 459, memory 460, data source 467} of embodiment 4.

[0624] Those skilled in the art can understand that all or part of the steps in the above method can be instructed by a program to relevant hardware, and the program can be stored in a computer readable storage medium, such as a read only memory, a hard disk or an optical disk. Alternatively, all or part of the steps of the above embodiment can also be implemented using one or more integrated circuits. Correspondingly, each module unit in the above embodiment can be implemented in the form of hardware or in the form of a software function module, and the present application is not limited to any specific form of combination of software and hardware. The user equipment, terminal and UE in the present application include but are not limited to unmanned aerial vehicles, communication modules on unmanned aerial vehicles, remote control aircrafts, aircrafts, small aircrafts, mobile phones, tablet computers, notebooks, vehicle-mounted communication devices, vehicles, RSUs, wireless sensors, network cards, Internet of Things terminals, RFID terminals, NB-IOT terminals, MTC (Machine Type Communication) terminals, eMTC (enhanced MTC) terminals, data cards, network cards, vehicle-mounted communication devices, low-cost mobile phones, low-cost tablet computers and other wireless communication devices. The base station or system device in the present application includes but is not limited to macro cellular base stations, micro cellular base stations, small cellular base stations, home base stations, relay base stations, eNBs, gNBs, TRPs (Transmitter Receiver Points), GNSSs, relay satellites, satellite base stations, aerial base stations, RSUs (Road Side Units), unmanned aerial vehicles, test equipment such as wireless communication devices that simulate part of the functions of base stations or signaling testers, and the like.

[0625] Those skilled in the art will understand that the application can be implemented by other specified forms without departing from the core or essential characteristics thereof. Therefore, the presently disclosed embodiments should not be considered as descriptive but rather as limiting. The scope of the application is determined by the appended claims and not by the foregoing description, and all modifications within the equivalent meaning and range of the claims are considered to be included therein.

Claims

1. A method for a first node used for wireless communication, the method comprising: Comprising: in response to any condition in the first set of conditions being met, transmitting a first wireless signal and monitoring for a response to the first wireless signal; determining whether a first AIoT device is nearby based on the monitoring; wherein the condition that the first AIoT device is determined to be nearby comprises the response to the first wireless signal being successfully received; at least one condition in the first set of conditions depends on a downlink quality of the first node; the response to the first wireless signal being transmitted by the first AIoT device.

2. The method of claim 1, wherein, the condition that the first AIoT device is determined to be nearby further comprises: a reception quality of a signal from the first AIoT device exceeds a first threshold.

3. The method according to claim 1 or 2, characterized in that, Comprising: transmitting first signaling, an indication of the first signaling depending on whether the response to the first wireless signal is successfully received.

4. The method of claim 3, wherein, Comprising: receiving second signaling, the second signaling comprising configuration information for AIoT; wherein the second signaling is triggered by the first signaling.

5. The method according to any one of claims 1 to 4, characterized in that, Comprising: in response to determining that the first AIoT device is nearby based on the monitoring, starting a first timer; wherein the first timer is used to indicate a length of time to maintain a connection with the first AIoT device.

6. The method according to any one of claims 1 to 4, characterized in that, Comprising: in response to determining that the first AIoT device is not nearby based on the monitoring, releasing a connection for the first AIoT device.

7. The method according to any one of claims 1 to 6, characterized in that, the first set of conditions comprises at least one of the following conditions: resource overload; being de-authorized AIoT functionality.

8. The method according to any one of claims 1 to 7, characterized in that, the at least one condition in the first set of conditions comprises at least one of the following conditions: a serving cell is worse than a second threshold; a neighbor cell is better than a special cell first offset value; a neighbor cell is better than a third threshold; a special cell is worse than a fourth threshold and a neighbor cell or a secondary cell is better than a fifth threshold; a neighbor cell is better than a secondary cell second offset value; at least one condition handover CHO candidate cell satisfies a corresponding CHO execution condition; a radio resource control, RRC, connection failure occurs.

9. The method according to any one of claims 1 to 8, characterized in that, the first set of conditions comprises at least one of the following conditions: a handover occurs; an RRC connection reestablishment occurs.

10. A terminal for wireless communication, the terminal comprising: Comprising: the terminal comprises one or more processors and a memory; the memory is coupled to the one or more processors, the memory is configured to store computer program codes, the computer program codes comprise computer instructions, and the one or more processors invoke the computer instructions to cause the terminal to perform the method according to any one of claims 1-9.

11. A base station for wireless communication, the base station comprising: Comprising: the base station comprises one or more processors and a memory; the memory is coupled to the one or more processors, the memory is configured to store computer program codes, the computer program codes comprise computer instructions, and the one or more processors invoke the computer instructions to cause the base station to perform the method according to any one of claims 1-7.

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