Method and apparatus used for wireless communication

Abstract

The present application discloses a method and apparatus used for wireless communication. The method comprises: a first node receives first signaling from a second node, the first signaling being used for indicating that a first AIoT device is associated with the first node and a third node; and, in response to any condition in a first condition set being satisfied, sends second signaling to the second node. The first AIoT device is near the first node. The first condition set comprises that an AIoT device near the first node changes. The second signaling indicates a change in a node associated with the first AIoT device. The present application is beneficial for ensuring the reliability of cooperatively providing an AIoT service between a first node and another node supporting a reader function, thereby improving the efficiency and flexibility of the first node providing the AIoT service.

Description

A method and apparatus for wireless communication

[0001] This application claims priority to Chinese Patent Application No. 202411614684.4, filed on November 12, 2024, entitled "A method and apparatus for wireless communication", the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to a method and apparatus in a wireless communication system, and more particularly to a scheme and apparatus related to changes in associated nodes of AIoT devices in a wireless communication system. Background Technology

[0003] In recent years, the Internet of Things (IoT) has garnered significant attention in the field of wireless communication. Hundreds of billions, even trillions, of IoT devices could improve productivity and enhance quality of life. However, most existing wireless communication devices require manual battery replacement or charging, leading to excessively high maintenance costs and even safety hazards in certain scenarios (such as wireless sensors in the power and oil industries). Today, automation and digitalization across various industries are opening up many new markets. For example, most industries use barcodes and RFID (Radio Frequency Identification) technologies for asset identification. However, RFID readers struggle to achieve seamless coverage in densely deployed environments. Therefore, new IoT technologies are needed to support battery-free devices without energy storage capabilities or energy-storage devices that do not require manual replacement or charging.

[0004] 3GPP (3rd Generation Partnership Project) Release 18 began researching AIoT (Ambient Internet of Things), a system targeting very low-end IoT applications that relies on ultra-low complexity devices and ultra-low power technologies. These ultra-low complexity devices are called AIoT devices. An AIoT device is an IoT device powered by energy harvesting, either without a battery or with limited energy storage capacity (e.g., using capacitors). In an AIoT system, the Reader function can be deployed in UE (User Equipment) or base stations, primarily responsible for discovering nearby AIoT devices and executing AIoT-related commands (e.g., reading / writing data). Building on the research progress in Release 19, the Reader can interact with nearby AIoT devices via a wireless connection, based on instructions from nodes controlling AIoT functions / services (e.g., core network elements supporting AIoT functions / services). Summary of the Invention

[0005] The applicant's research revealed that when AIoT functionality is introduced, nodes with Reader functionality deployed may receive association information from the network about AIoT devices in the vicinity of the node, as well as other nodes with Reader functionality deployed that can manage these AIoT devices. Therefore, how to enable the network to promptly obtain changes in the aforementioned association information is an urgent problem to be solved.

[0006] To address the aforementioned issues, this application discloses a solution. It should be noted that although the initial purpose of this application was for the N1 interface between the UE and the core network or the Uu interface between the UE and the base station, this application can also be used for the N1 interface between the MT (Mobile Termination) and the core network, or the Uu interface between the MT and the base station (e.g., donor-gNB) in NCR (Network Controlled Repeater) / IAB (Integrated Access and Backhaul) / WAB (Wireless Access and Backhaul), or the interface between the Reader and the node controlling AIoT functions / services, achieving similar technical effects to the N1 interface between the UE and the core network or the Uu interface between the UE and the base station. Furthermore, adopting a unified solution across different scenarios helps reduce hardware complexity and cost. Without conflict, embodiments and features in any node of this application can be applied to any other node. Without conflict, embodiments and features in any embodiment of this application can be arbitrarily combined with each other.

[0007] Where necessary, the interpretation of the terminology in this application shall refer to the definitions of the 3GPP TS38 series of specifications; or, refer to the definitions of the 3GPP TS22 series of specifications; or, refer to the definitions of the 3GPP TS23 series of specifications; or, refer to the definitions of the 3GPP TS24 series of specifications.

[0008] This application discloses a method used in a first node of wireless communication, characterized by comprising:

[0009] Receive a first signaling message from the second node, the first signaling message being used to indicate that the first AIoT device is associated with the first node and the third node;

[0010] In response to the fulfillment of any condition in the first set of conditions, a second signaling is sent to the second node;

[0011] Wherein, the first AIoT device is near the first node; the first condition set includes changes in the AIoT devices near the first node; and the second signaling indicates changes in the associated nodes of the first AIoT device.

[0012] In the above method, the first node can respond promptly to changes in the first AIoT device and its associated nodes, and inform the network of these changes. This helps the network manage the correspondence between the first AIoT device and its associated nodes, which is beneficial to ensuring the reliability of the first node's collaboration with other nodes that support the Reader function in providing AIoT services, and improves the efficiency and flexibility of the first node in providing AIoT services.

[0013] Specifically, according to one aspect of this application, the above method is characterized in that the first set of conditions includes the first AIoT device not being near the third node.

[0014] In the above aspects, the second signaling can be triggered by the first AIoT device not being near the third node, which is beneficial for the auxiliary network to know the change in the correspondence between the first AIoT device and the third node.

[0015] Specifically, according to one aspect of this application, the above method is characterized by comprising:

[0016] A third signaling is received from the third node, indicating that the first AIoT device is not near the third node.

[0017] In the above aspects, the third signaling can enable the first node to know that the first AIoT device is not near the third node, which helps to reduce the processing complexity of the first node sending the second signaling.

[0018] Specifically, according to one aspect of this application, the above method is characterized in that the first set of conditions includes the inability of the first node and the third node to communicate.

[0019] In the above aspects, the second signaling can be triggered by the inability of the first node and the third node to communicate, which is beneficial for the auxiliary network to know the changes in the correspondence between the associated nodes of the first AIoT device.

[0020] Specifically, according to one aspect of this application, the above method is characterized by comprising:

[0021] Send a fourth signaling message to the second node, the fourth signaling message including the identifier of the third node;

[0022] The first node receives a fifth signaling message from the second node, which indicates that the first node and the third node cannot communicate.

[0023] In the above aspects, the first node can obtain information about whether it can communicate with the third node by querying the network, which helps to reduce the processing complexity of the first node sending the second signaling.

[0024] Specifically, according to one aspect of this application, the above method is characterized in that the first signaling includes first area information; the first area information indicates the effective area where the first AIoT device is associated with the first node and the third node; the first condition set includes the camping cell not being in the effective area.

[0025] In the above aspects, the second signaling can be triggered when the cell where the first node is stationed is not within the effective area of ​​the first AIoT device and the associated node, which helps the auxiliary network to know the changes in the effectiveness between the first AIoT device and the associated node.

[0026] Specifically, according to one aspect of this application, the above method is characterized in that the first set of conditions includes at least one of the following conditions:

[0027] A handover has occurred;

[0028] Community re-election has occurred;

[0029] RRC connection restoration occurred;

[0030] RRC connection re-establishment occurred.

[0031] In the above aspects, the second signaling can be triggered by changes in the downlink quality of the first node, which is beneficial for the auxiliary network to manage the correspondence between the first AIoT device and associated nodes according to the aforementioned changes.

[0032] Specifically, according to one aspect of this application, the above method is characterized by comprising:

[0033] A sixth signaling message is sent to the second node, indicating support for AIoT devices near the first node to be associated with both the first and fourth nodes.

[0034] In the above aspects, the sixth signaling enables the network to know whether the first node supports cooperating with the fourth node to provide AIoT services, thereby assisting the network in generating the first signaling.

[0035] This application discloses a method used in a second node for wireless communication, characterized by comprising:

[0036] Send a first signaling message to the first node, the first signaling message being used to instruct the first AIoT device to be associated with the first node and the third node;

[0037] Receive the second signaling from the first node;

[0038] Wherein, the first AIoT device is near the first node; the first condition set includes changes in the AIoT devices near the first node; and the second signaling indicates changes in the associated nodes of the first AIoT device.

[0039] Specifically, according to one aspect of this application, the above method is characterized in that the first set of conditions includes the first AIoT device not being near the third node.

[0040] Specifically, according to one aspect of this application, the above method is characterized in that the first set of conditions includes the inability of the first node and the third node to communicate.

[0041] Specifically, according to one aspect of this application, the above method is characterized by comprising:

[0042] Receive a fourth signaling message from the first node, the fourth signaling message including the identifier of the third node;

[0043] A fifth signaling message is sent to the first node, indicating that the first node and the third node cannot communicate.

[0044] Specifically, according to one aspect of this application, the above method is characterized in that the first signaling includes first area information; the first area information indicates the effective area where the first AIoT device is associated with the first node and the third node; the first condition set includes the camping cell not being in the effective area.

[0045] Specifically, according to one aspect of this application, the above method is characterized in that the first set of conditions includes at least one of the following conditions:

[0046] A handover has occurred;

[0047] Community re-election has occurred;

[0048] RRC connection restoration occurred;

[0049] RRC connection re-establishment occurred.

[0050] Specifically, according to one aspect of this application, the above method is characterized by comprising:

[0051] A sixth signaling is received from the first node, the sixth signaling indicating support for AIoT devices near the first node to be associated with the first node and the fourth node.

[0052] This application discloses a first node used for wireless communication, characterized in that it comprises:

[0053] The first node includes: one or more processors and memory;

[0054] The memory is coupled to the one or more processors and is used to store computer program code, the computer program code including computer instructions, which the one or more processors invoke to cause the first node to perform a method used in a first node for wireless communication.

[0055] This application discloses a second node used for wireless communication, characterized in that it comprises:

[0056] The second node includes: one or more processors and memory;

[0057] The memory is coupled to the one or more processors and is used to store computer program code, the computer program code including computer instructions, which the one or more processors invoke to cause the second node to perform the method in a second node used for wireless communication. Attached Figure Description

[0058] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0059] Figure 1 shows a flowchart of communication of a first node according to an embodiment of this application;

[0060] Figure 2 shows a schematic diagram of a network architecture according to an embodiment of this application;

[0061] Figure 3 illustrates a schematic diagram of an embodiment of a wireless protocol architecture for the user plane and control plane according to an embodiment of this application;

[0062] Figure 4 shows a schematic diagram of a first communication device and a second communication device according to an embodiment of this application;

[0063] Figure 5 illustrates a transmission flowchart between a first node N1 and a second node N2 according to an embodiment of this application;

[0064] Figure 6 illustrates a transmission flowchart of a first condition set according to an embodiment of the present application, where the first node and the third node cannot communicate.

[0065] Figure 7 shows a flowchart of a first set of conditions according to an embodiment of the present application, including the determination that the stationed cell is not in the valid area;

[0066] Figure 8 shows a flowchart illustrating the determination of at least one of the following conditions according to an embodiment of the present application: handover occurs, cell reselection occurs, RRC connection recovery occurs, and RRC connection re-establishment occurs.

[0067] Figure 9 shows a transmission flowchart of a first node sending a sixth signaling according to an embodiment of this application;

[0068] Figure 10 shows a transmission flowchart of a first node receiving an eighth signaling according to an embodiment of this application;

[0069] Figure 11 shows a schematic diagram of the structure of an A-IoT device according to an embodiment of this application;

[0070] Figure 12 shows a structural block diagram of a processing apparatus for a first node according to an embodiment of the present application;

[0071] Figure 13 shows a structural block diagram of a processing apparatus for a second node according to an embodiment of the present application. Detailed Implementation

[0072] The technical solutions of this application will be further described in detail below with reference to the accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this application can be arbitrarily combined with each other. Considering performance, flexibility, complexity, overhead, and compatibility, those skilled in the art are motivated to flexibly combine the embodiments in different drawings without conflict, including but not limited to the embodiments in Figure 1 and the embodiments in Figures 5-10, the embodiments in Figure 5 and the embodiments in Figures 6-10, etc.

[0073] Example 1

[0074] Example 1 illustrates a flowchart of communication of a first node according to an embodiment of this application, as shown in Figure 1. In the first node 100 shown in Figure 1, each block represents a step.

[0075] In Embodiment 1, the first node 100 receives a first signaling from the second node in step 101, the first signaling being used to indicate that the first AIoT device is associated with the first node and the third node; in step 102, as a response to any condition in the first set of conditions being met, the first node 100 sends a second signaling to the second node; wherein the first AIoT device is near the first node; the first set of conditions includes changes in the AIoT devices near the first node; and the second signaling indicates a change in the associated node of the first AIoT device.

[0076] As an example, the first node is a Reader.

[0077] As one example, the first node is a user equipment.

[0078] As one example, the user equipment is a terminal.

[0079] As one example, the first node is an access network device.

[0080] As one example, the access network device is a base station.

[0081] As an example, the first node functions as a Reader.

[0082] As an example, the first node working as a Reader means that the first node supports the Reader function.

[0083] As an example, the first node working as a Reader means that the first node has Reader capabilities.

[0084] As an example, the first node working as a Reader means that the first node is authorized to act as a Reader.

[0085] As one embodiment, the Reader capability includes at least one of the following: discovering AIoT devices; performing a read operation on the AIoT device; and performing a write operation on the AIoT device.

[0086] As one embodiment, the Reader capability includes at least one of the following: support for an Inventory service; support for a Command service; wherein the Command service includes Read / Write services.

[0087] In one embodiment, the second node is the management node of the first node.

[0088] As one embodiment, the management node of the first node is the access network device connected to the first node.

[0089] In one embodiment, the second node is the serving base station of the first node.

[0090] As one embodiment, the management node of the first node is the core network device connected to the first node.

[0091] As an example, the core network device connected to the first node can control AIoT functions / services.

[0092] As one example, the core network devices connected to the first node include nodes that control AIoT functions / services.

[0093] As an example, the core network device connected to the first node can communicate with the node that controls AIoT functions / services.

[0094] As one example, the core network device connected to the first node is a proxy node between the first node and the node controlling AIoT functions / services.

[0095] As one embodiment, the second node is the service core network device of the first node.

[0096] As an example, the first signaling is an AS (Access Stratum) message.

[0097] As an example, the first signaling is an RRC (Radio Resource Control) message.

[0098] As an example, the first signaling is an RRC Setup message.

[0099] As an example, the first signaling is an RRC Resume message.

[0100] As an example, the first signaling is an RRC Reestablishment message.

[0101] As an example, the first signaling is an RRC Reconfiguration message.

[0102] As an example, the first signaling is an RRC Release message.

[0103] As an example, the first signaling is a NAS (Non-Access Stratum) message.

[0104] As an example, the first signaling is a Registration Accept message.

[0105] As an example, the first signaling is a configuration update command message.

[0106] As an example, the first signaling is a downlink NAS transport message.

[0107] As an example, the first signaling is an NGAP message.

[0108] As an example, the first signaling is an NG Setup Response message.

[0109] As an example, the first signaling is an AMF Configuration Update message.

[0110] As one example, the first signaling is an interface message between the Reader and the node controlling the AIoT function / service.

[0111] As an example, the first signaling is a newly defined downlink AS message, downlink NAS message, or downlink NGAP message related to AIoT.

[0112] As an example, the second signaling is an AS message.

[0113] As an example, the second signaling is an RRC message.

[0114] As an example, the second signaling is an RRC Setup Request message.

[0115] As an example, the second signaling is an RRC Resume Request message.

[0116] As an example, the second signaling is an RRC Reestablishment Request message.

[0117] As an example, the second signaling is a Measurement Report message.

[0118] As one example, the second signaling is a UE Assistance Information message.

[0119] As one example, the second signaling is a NAS message.

[0120] As an example, the second signaling is a Registration Request message.

[0121] As an example, the second signaling is an uplink NAS transport (UL NAS Transport) message.

[0122] As an example, the second signaling is an NGAP message.

[0123] As an example, the second signaling is a RAN Configuration Update message.

[0124] As an example, the second signaling is an AMF Configuration Update Acknowledge message.

[0125] As one example, the second signaling is an interface message between the Reader and the node controlling the AIoT function / service.

[0126] As one example, the second signaling is a newly defined AIoT-related uplink AS message, uplink NAS message, or uplink NGAP message.

[0127] As one embodiment, the third node is a collaborative node that provides AIoT services together with the first node; wherein the AIoT services include at least one of the following: Inventory; Read; Write.

[0128] As one example, the third node is a collaborative node between the first node and the first AIoT device.

[0129] As an example, please refer to the example of the first node for an example of the third node.

[0130] As one example, the first AIoT device includes an RFID device.

[0131] As an example, the first AIoT device is located near both the first node and the third node.

[0132] As one embodiment, the first AIoT device being near the first node includes: the first AIoT device being within the coverage area of ​​the first node's transmit and receive signals.

[0133] As one embodiment, the first AIoT device being located near the first node includes: the first node providing proxy services for the first AIoT device.

[0134] As one embodiment, the first AIoT device near the first node includes: the first node maintaining authorization for the proxy service of the first AIoT device.

[0135] As one embodiment, the first AIoT device near the first node includes: the first node and the first AIoT device being able to interact with AIoT signaling or AIoT data via a wireless interface.

[0136] As one embodiment, the first AIoT device being near the first node includes: the first node sending signal #1 to the first AIoT device and successfully receiving a response of signal #1.

[0137] As one embodiment, the first AIoT device being near the first node includes: the first node sending a signal #1 to the first AIoT device and successfully receiving the signal #1, and the reception quality of the signal from the first AIoT device exceeding a threshold #1.

[0138] As an example, the unit of the received quality is dBm (millidecibels).

[0139] As an example, the unit of the received quality is dB (decibels).

[0140] As an example, the unit of the received quality is W (watts).

[0141] As an example, the unit of the received quality is mW (milliwatts).

[0142] As an example, the unit of the received quality is μW (microwatt).

[0143] As an example, the reception quality is RSRP (Reference Signal Received Power).

[0144] As an example, the received quality is RSRQ (Reference Signal Received Quality).

[0145] As an example, the reception quality is RSSI (Received Signal Strength Indicator).

[0146] As an example, the reception quality is SNR (Signal to Noise Ratio) or SINR (Signal to Interference plus Noise Ratio).

[0147] As an example, the reception quality of the signal from the first AIoT device is the BLER (Block Error Rate) of the uplink physical channel between the first AIoT device and the first node.

[0148] As an example, the reception quality of the signal from the first AIoT device is the BLER of the PDRCH (Physical Device to Reader Channel) for receiving the signal from the first AIoT device.

[0149] As an example, the signal from the first AIoT device is the response to signal #1.

[0150] As an example, the successful reception of the signal #1 includes: the response of the signal #1 being correctly decoded by the first node.

[0151] As an example, the successful receipt of the signal #1 includes: the response of the signal #1 passing the CRC (Cyclic Redundancy Check) of the first node.

[0152] As an example, the successful reception of the signal #1 includes: the received energy of the response of the signal #1 exceeds a threshold #2.

[0153] As an example, the successful reception of the signal #1 includes: the coherent detection of the response of the signal #1 exceeds a first threshold value.

[0154] As an example, the successful reception of the signal #1 includes: the incoherent detection of the response of the signal #1 exceeds a second threshold value.

[0155] As an example, signal #1 is a baseband signal or a radio frequency signal.

[0156] As an example, signal #1 is a reference signal.

[0157] As an example, signal #1 is the physical channel.

[0158] As an example, signal #1 is an OOK (on / off keying) signal.

[0159] As an example, signal #1 is an OFDM (Orthogonal Frequency Division Multiplexing) symbol.

[0160] As an example, signal #1 is a characteristic sequence.

[0161] As an example, signal #1 is WUS (Wake Up Signal).

[0162] As an example, signal #1 is PDCCH (Physical Downlink Control Channel).

[0163] As an example, signal #1 is PDSCH (Physical Downlink Shared Channel).

[0164] As an example, signal #1 is PRDCH (Physical Reader to Device Channel).

[0165] As an example, signal #1 is downlink AIoT signaling or downlink AIoT data.

[0166] As an example, the response of signal #1 is excited by signal #1.

[0167] As an example, the response of signal #1 is triggered by signal #1.

[0168] As an example, the response of signal #1 is powered by signal #1.

[0169] As an example, the response of signal #1 is the backscattering signal of signal #1.

[0170] As an example, the response of signal #1 is a baseband signal or a radio frequency signal.

[0171] As an example, the response of signal #1 is a reference signal.

[0172] As an example, the response of signal #1 is a physical channel.

[0173] As an example, the response to signal #1 is an OOK signal.

[0174] As an example, the response of signal #1 is a BPSK (Binary Phase Shift Keying) signal.

[0175] As an example, the response of signal #1 is an MSK (Minimum Shift Keying) signal.

[0176] As an example, the response of signal #1 is an OFDM symbol.

[0177] As an example, the response of signal #1 is a characteristic sequence.

[0178] As an example, the response to signal #1 is WUS.

[0179] As an example, the response of signal #1 is PUCCH (Physical Uplink Control Channel).

[0180] As an example, the response to signal #1 is PUSCH (Physical Uplink Shared Channel).

[0181] As an example, the response to signal #1 is PDRCH.

[0182] As an example, the response to signal #1 is uplink AIoT signaling or uplink AIoT data.

[0183] As an example, the uplink AIoT signaling refers to D2R (Device to Reader) signaling, and the downlink AIoT signaling refers to R2D (Reader to Device) signaling.

[0184] As an example, the uplink AIoT data refers to D2R data, and the downlink AIoT data refers to R2D data.

[0185] As one embodiment, the phrase "the first AIoT device is associated with the first node and the third node" includes: the first AIoT device is near the first node and the first AIoT device is near the third node.

[0186] As an example, for an example of the first AIoT device being near the third node, please refer to the example of the first AIoT device being near the first node.

[0187] As one embodiment, the phrase "the first AIoT device is associated with the first node and the third node" includes: both the first node and the third node are capable of managing the first AIoT device.

[0188] As one embodiment, the phrase "the first AIoT device is associated with the first node and the third node" includes: both the first node and the third node are able to interact with the first AIoT device via a wireless interface to exchange AIoT signaling or AIoT data.

[0189] As one embodiment, the phrase "the first AIoT device is associated with the first node and the third node" includes: both the first node and the third node are able to transmit with the first AIoT device via PRDCH and PDRCH.

[0190] As one embodiment, the phrase "the first AIoT device is associated with the first node and the third node" includes: the first node and the first AIoT device interact with each other via a wireless interface to exchange uplink AIoT signaling or uplink AIoT data, and the third node and the first AIoT device interact with each other via a wireless interface to exchange downlink AIoT signaling or downlink AIoT data.

[0191] As one embodiment, the phrase "the first AIoT device is associated with the first node and the third node" includes: the third node and the first AIoT device communicate via PRDCH, and the first node and the first AIoT device communicate via PDRCH.

[0192] As one embodiment, the phrase "the first AIoT device is associated with the first node and the third node" includes: the first node and the first AIoT device interact with downlink AIoT signaling or downlink AIoT data through a wireless interface, and the third node and the first AIoT device interact with uplink AIoT signaling or uplink AIoT data through a wireless interface.

[0193] As one embodiment, the phrase "the first AIoT device is associated with the first node and the third node" includes: the first node and the first AIoT device transmit data via PRDCH, and the third node and the first AIoT device transmit data via PDRCH.

[0194] As one embodiment, the phrase "the first AIoT device is associated with the first node and the third node" includes: the identifier of the first AIoT device is associated with the identifier of the first node and the identifier of the third node.

[0195] As one embodiment, the phrase "the first AIoT device is associated with the first node and the third node" includes: the identifier of at least one AIoT device is associated with the identifier of the first node and the identifier of the third node; wherein, the at least one AIoT device includes the first AIoT device.

[0196] As an example, the first signaling is also used to indicate that the at least one AIoT device is associated with the first node and the third node.

[0197] As one embodiment, the phrase "the first AIoT device is associated with the first node and the third node" includes: the identifier of the first AIoT device is associated with the identifier of the first node and the identifier of at least one node; wherein the at least one node includes the third node.

[0198] As an example, the first signaling is also used to indicate that the first AIoT device is associated with the first node and the at least one node.

[0199] As one embodiment, the phrase "the first AIoT device is associated with the first node and the third node" includes: the identifier of at least one AIoT device is associated with the identifier of the first node and the identifier of at least one node; wherein, the at least one AIoT device includes the first AIoT device; and the at least one node includes the third node.

[0200] As an example, the first signaling is also used to indicate that the at least one AIoT device is associated with the first node and the at least one node.

[0201] As one embodiment, the first signaling includes: the identifier of the first AIoT device, the identifier of the first node, and the identifier of the third node.

[0202] As one embodiment, the first signaling includes: the identifier of the at least one AIoT device, the identifier of the first node, and the identifier of the third node.

[0203] As one embodiment, the first signaling includes: the identifier of the first AIoT device, the identifier of the first node, and the identifier of the at least one node.

[0204] As one embodiment, the first signaling includes: the identifier of the at least one AIoT device, the identifier of the first node, and the identifier of the at least one node.

[0205] The above four embodiments are an explicit indication method in which the first signaling indicates that the first AIoT device is associated with the first node and the third node.

[0206] As one embodiment, the first signaling includes: the identifier of the first AIoT device and the identifier of the third node.

[0207] As one embodiment, the first signaling includes: the identifier of the at least one AIoT device and the identifier of the third node.

[0208] As one embodiment, the first signaling includes: the identifier of the first AIoT device and the identifier of the at least one node.

[0209] As one embodiment, the first signaling includes: the identifier of the at least one AIoT device and the identifier of the at least one node.

[0210] Since the first signaling is a dedicated signaling sent from the second node to the first node, in the above four embodiments, the first signaling implicitly indicates that the first AIoT device is associated with both the first node and the third node.

[0211] As an example, for an example of the at least one AIoT device, please refer to the example of the first AIoT device.

[0212] As an example, please refer to the example of the third node for an example of the at least one node.

[0213] As an example, the identifier of the first AIoT device is pre-configured.

[0214] As one example, the identifier of the first AIoT device is indicated by the second node.

[0215] As one example, the identifier of the first AIoT device is assigned by the second node.

[0216] As one example, the identifier of the first AIoT device is assigned by the first node.

[0217] As an example, the identifier of the first AIoT device is a permanent identifier.

[0218] As an example, the identifier of the first AIoT device is a temporary identifier.

[0219] As an example, the identifier of the first AIoT device is only valid if the first AIoT device is near the first node.

[0220] As an example, the identifier of the first AIoT device is only valid within a certain area.

[0221] As an example, the identifier of the area includes at least one of the following: cell identifier; base station identifier; PLMN (Public Land Mobile Network) identifier; PNI-NPN (Public Network Integrated Non-Public Network) identifier; SNPN (Stand-alone Non-Public Network) identifier; CAG (Closed Access Group) identifier; TAI (Tracking Area Identity); TAC (Tracking Area Code); RANAC (RAN Area Code); TRP (Transmit / Receive Point) ID.

[0222] As an example, the cell identifier includes at least one of the following: PCI (Physical Cell Identity); NCGI (NR Cell Global Identifier).

[0223] As an example, the base station identifier includes at least one of the following: global gNB ID; gNB IP (Internet Protocol) address.

[0224] As one example, the identifier of the first AIoT device is an encrypted identifier.

[0225] As one example, the identifier of the first AIoT device is an unencrypted identifier.

[0226] As one embodiment, the identifier of the first AIoT device is the group identifier (AIoT Device Group ID) of the first AIoT device group; wherein, the first AIoT device group includes the first AIoT device.

[0227] As one embodiment, the identifier of the first AIoT device includes the identifier of the area where the first AIoT device is located.

[0228] As an example, the identifier of the first AIoT device is the identifier used by the first AIoT device during the process of accessing the first node.

[0229] As one example, the identifier of the first AIoT device is the identifier used by the first AIoT device during random access with the first node.

[0230] As one example, the identifier of the first AIoT device is a random ID generated by the first AIoT device.

[0231] As one embodiment, the identifier of the first AIoT device is an identifier assigned to the first AIoT device by the first node for resolving access conflicts (e.g., a random ID for contention resolution).

[0232] As an example, for an example of the identifier of the at least one AIoT device, please refer to an example of the identifier of the first AIoT device.

[0233] As an example, the first node is a user equipment, and the identifier of the first node includes at least one of the following: C-RNTI (Cell Radio Network Temporary Identifier); NCGI; PCI; 5G-GUTI (5G Globally Unique Temporary Identifier); SUPI (Subscription Permanent Identifier); SUCI (Subscription Concealed Identifier); GPSI (Generic Public Subscription Identifier); PEI (Permanent Equipment Identifier).

[0234] As one embodiment, the first node is an access network device, and the identifier of the first node includes the identifier of the area of ​​the first node.

[0235] As an example, for an example of the identifier of the third node, please refer to an example of the identifier of the first node.

[0236] As an example, for an example of the identifier of the at least one node, please refer to an example of the identifier of the first node.

[0237] As one embodiment, the "change in the AIoT device near the first node" includes: the first AIoT device changes from being near the first node to not being near the first node.

[0238] The above embodiments help the network understand the changes in the association between the first AIoT device and the first node, and assist the network in timely updating the configuration of the associated node for the first AIoT device that has been issued to the first node.

[0239] As one embodiment, the first AIoT device not being near the first node includes: the first AIoT device not being within the coverage area of ​​the first node's transmit / receive signals.

[0240] As one embodiment, the first AIoT device not being near the first node includes: the first node being unable to provide proxy services for the first AIoT device.

[0241] As one example, the first AIoT device not being near the first node includes: the first node being unable to maintain authorization for the proxy service of the first AIoT device.

[0242] As one embodiment, the first AIoT device not being near the first node includes: the first node and the first AIoT device being unable to exchange AIoT signaling or AIoT data via a wireless interface.

[0243] As one embodiment, the first AIoT device not being near the first node includes: the first node sending signal #1 to the first AIoT device, but the response to signal #1 is not successfully received by the first node.

[0244] As an example, the first AIoT device not being near the first node includes at least one of the following: the first node sends signal #1 to the first AIoT device, but the response to signal #1 is not successfully received by the first node; or the reception quality of the signal from the first AIoT device does not exceed threshold #1.

[0245] As one embodiment, the "change in the AIoT device near the first node" includes: the second AIoT device changes from being near the first node to not being near the first node.

[0246] As one embodiment, the first signaling indicates that the second AIoT device is associated with the first node and other associated nodes of the second AIoT device besides the first node.

[0247] As one embodiment, the first signaling indicates that the second AIoT device is associated with the first node and the third node.

[0248] As one example, the "change in the AIoT device near the first node" includes: the third AIoT device changes from not being near the first node to being near the first node.

[0249] As an example, the third AIoT device is also located near the third node.

[0250] The two embodiments described above help the network understand changes in AIoT devices near the first node, and assist the network in timely adjusting the AIoT devices associated with the first node and the corresponding associated cooperative nodes.

[0251] As an example, for an example of the second AIoT device or the third AIoT device, please refer to the example of the first AIoT device.

[0252] As an example, for an example of whether the second AIoT device or the third AIoT device is near the first node, please refer to the example of whether the first AIoT device is near the first node.

[0253] As one example, the "change in the associated node of the first AIoT device" includes: the first AIoT device is no longer associated with the first node.

[0254] As an example, the "change in the associated node of the first AIoT device" includes: the first AIoT device is no longer associated with the third node.

[0255] As an example, the "change in the associated node of the first AIoT device" includes: the first AIoT device is no longer associated with the first node and the third node.

[0256] As an example, in response to the first AIoT device no longer being associated with the first node or the first AIoT device no longer being associated with the third node, the first node considers that the first AIoT device is no longer associated with both the first node and the third node.

[0257] As an example, in response to the first AIoT device no longer being associated with the first node or the first AIoT device no longer being associated with the third node, the first node removes the association between the first AIoT device and the first node and the third node.

[0258] As an example, the "change in the associated node of the first AIoT device" includes: the associated node of the first AIoT device has not changed, that is, the first AIoT device is still associated with the first node and the third node.

[0259] As one embodiment, the "change in the associated node of the first AIoT device" includes: the first AIoT device being associated with a new node; typically, but not limitingly, this embodiment can be combined with any of the four embodiments described above.

[0260] As an example, please refer to the example of the third node for an example of the new node.

[0261] As an example, the first AIoT device being associated with the new node means that the first AIoT device is near the new node.

[0262] As an example, for an example of the first AIoT device being near the new node, please refer to the example of the first AIoT device being near the first node.

[0263] As one example, the first set of conditions includes the first AIoT device being near the new node.

[0264] As one example, the "change of associated nodes of the first AIoT device" includes: the first node moving out of the stationary cell.

[0265] As one embodiment, the "second signaling indicates a change in the associated node of the first AIoT device" includes: the second signaling indicates a request to update the first AIoT device and the associated node of the first AIoT device.

[0266] As one embodiment, the "second signaling indicates a change in the associated node of the first AIoT device" includes: the second signaling is used to initiate an update process for the first AIoT device and its associated nodes.

[0267] As one embodiment, the second signaling includes indication information indicating that the second AIoT device has changed from being near the first node to not being near the first node.

[0268] As one embodiment, the second signaling includes indication information that the third AIoT device has changed from being not near the first node to being near the first node.

[0269] As one embodiment, the "second signaling indicates a change in the associated node of the first AIoT device" includes: the second signaling indicates a request to update the AIoT devices near the first node and the associated nodes of the AIoT devices near the first node.

[0270] As one embodiment, the "second signaling indicates a change in the associated node of the first AIoT device" includes: the second signaling is used to initiate an update process for the AIoT device near the first node and the associated node of the AIoT device near the first node.

[0271] As an example, please refer to the example of the third node for an example of the associated node.

[0272] Example 2

[0273] Example 2 illustrates a schematic diagram of a network architecture according to an embodiment of this application, as shown in Figure 2.

[0274] Figure 2 illustrates the 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 a 5G+ network architecture, or a 6G network architecture, or a network architecture adopted in the future evolution of 3GPP; the network architecture 200 may be referred to as 5GS (5G System) / EPS (Evolved Packet System), or 6GS (6G System); the network architecture 200 includes at least one of UE (User Equipment) 201, RAN (Radio Access Network) 202, core network 210, HSS (Home Subscriber Server) / UDM (Unified Data Management) 220, and Internet service 230. The network architecture 200 can interconnect with other access networks, but these entities / interfaces are not shown for simplicity. As shown, the network architecture 200 provides packet-switched services; however, those skilled in the art will readily understand that the various concepts presented throughout this application can be extended to networks providing circuit-switched services or other cellular networks. The RAN includes node 203. The RAN may also include other nodes 204. Node 203 provides user and control plane protocol termination toward UE 201. Node 203 may be connected to other nodes 204 via an Xn interface (e.g., backhaul) / X2 interface. Node 203 may also be referred to as a base station, base transceiver station, radio base station, radio transceiver, transceiver function, basic service set (BSS), extended service set (ESS), TRP (transmitter-receiver node), or some other suitable term. AIoT device 205 and other AIoT devices 206 are IoT devices powered by energy harvesting, examples of which include RFID 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; node 203 provides UE 201 with an access point to the core network 210.Examples of UE201 include cellular phones, smartphones, Session Initiation Protocol (SIP) phones, laptops, 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, aircraft, narrowband IoT devices, machine-type communication devices, land vehicles, automobiles, wearable devices, mobile terminals (MTs) in relay equipment, or any other similar functional devices. Those skilled in the art may also refer to UE201 as a mobile station, subscriber station, mobile unit, subscriber unit, radio unit, remote unit, mobile device, radio communication device, remote device, mobile subscriber station, access terminal, mobile terminal, radio terminal, remote terminal, handheld device, user agent, mobile client, client, or any other suitable term. Node 203 is connected to the core network 210 via an S1 / NG interface. The core network 210 includes an MME (Mobility Management Entity) / AMF (Access and Mobility Management Function) / SMF (Session Management Function) 211, other MMEs / AMFs / SMFs 214, an S-GW (Service Gateway) / UPF (User Plane Function) 212, and a P-GW (Packet Data Network Gateway) / UPF 213, as well as other nodes not shown in Figure 2. The MME / AMF / SMF 211 is the control node that handles 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 transmitted through the S-GW / UPF 212, which is itself connected to the P-GW / UPF 213. The P-GW / UPF 213 provides UE IP address allocation and other functions. The P-GW / UPF213 connects to Internet service 230. Internet service 230 includes carrier-compliant Internet protocol services, specifically including Internet, intranet, IMS (IP Multimedia Subsystem), and packet switching services.

[0275] As one embodiment, the core network 210 includes a function for controlling AIoT, which is used to control IoT application services with AIoT devices.

[0276] As one embodiment, the core network 210 can communicate with application service nodes that have AIoT control functions / services.

[0277] As one embodiment, the Internet service 230 includes AIoT application services.

[0278] As an example, the first node includes the UE201.

[0279] As an example, the first node includes the node 203.

[0280] As one embodiment, the second node includes the node 203.

[0281] As one embodiment, the second node includes the core network 210.

[0282] As an example, the wireless link between the UE201 and the node203 includes a cellular link.

[0283] As an example, the wireless link between the UE201 and the node203 includes a link dedicated to exchanging AIoT signaling and AIoT data.

[0284] As an example, the wireless link between the UE201 and the AIoT device 205 includes a cellular link.

[0285] As one embodiment, the wireless link between the UE201 and the AIoT device 205 includes a link dedicated to exchanging AIoT signaling and AIoT data.

[0286] As one embodiment, the wireless link between the node 203 and the other AIoT device 206 includes a cellular link.

[0287] As one embodiment, the wireless link between the node 203 and the other AIoT device 206 includes a link dedicated to exchanging AIoT signaling and AIoT data.

[0288] Example 3

[0289] Example 3 illustrates a schematic diagram of an embodiment of a wireless protocol architecture for the user plane and control plane according to an embodiment of this application, as shown in Figure 3.

[0290] Example 3 illustrates a schematic diagram of an embodiment of a wireless protocol architecture for a user plane and control plane according to this application, as shown in Figure 3. Figure 3 is a schematic diagram illustrating an embodiment of a radio protocol architecture for a user plane 350 and a control plane 300. Figure 3 shows the radio protocol architecture for the control plane 300 between a first communication node device (any of the following: gNB, MME, AMF, UE, Reader, or RSU in V2X) and a second communication node device (any of the following: AIoT device, UE, gNB, or RSU in V2X) using four layers: Layer 1, Layer 2, Layer 3, and 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 herein as PHY 301. Layer 2 (L2 layer) 305 is above PHY 301 and is responsible for the link between the first and second communication node devices. Layer L2 305 includes a MAC (Medium Access Control) sublayer 302, an RLC (Radio Link Control) sublayer 303, and a PDCP (Packet Data Convergence Protocol) sublayer 304, which terminate at the second communication node device. The PDCP sublayer 304 provides multiplexing between different radio bearers and logical channels. It also provides security through encrypted data packets and supports cross-cell mobility between the second communication node devices and the first communication node device. The RLC sublayer 303 provides upper-layer packet segmentation and reassembly, retransmission of lost packets, and packet reordering to compensate for out-of-order reception due to HARQ. The MAC sublayer 302 provides multiplexing between logical and transport channels. It is also responsible for allocating various radio resources (e.g., resource blocks) within a cell among the first communication node devices. Furthermore, the MAC sublayer 302 handles HARQ operations. In the control plane 300, the RRC (Radio Resource Control) sublayer 306 of Layer 3 (L3 layer) is responsible for acquiring 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 transmission of non-access stratum signaling between the first and second communication node devices; this signaling transmission is transparent and invisible to the base station.The radio protocol architecture of user plane 350 includes Layer 1 (L1 layer) and Layer 2 (L2 layer). The radio protocol architecture for the first and second communication node devices in user plane 350 is largely the same as the corresponding layers and sublayers in control plane 300 for Physical Layer 351, PDCP sublayer 354 in L2 layer 355, RLC sublayer 353 in L2 layer 355, and MAC sublayer 352 in L2 layer 355. However, PDCP sublayer 354 also provides header compression for upper layer packets to reduce radio transmission overhead. L2 layer 355 in user plane 350 also includes SDAP (Service Data Adaptation Protocol) sublayer 356. SDAP sublayer 356 is responsible for mapping between QoS streams and Data Radio Bearers (DRBs) to support service diversity. Although not illustrated, the first communication node device may have several upper layers above the L2 layer 355, including a network layer (e.g., IP layer) terminating at the P-GW on the network side and an application layer terminating at the other end of the connection (e.g., remote UE, server, etc.).

[0291] As an example, the wireless protocol architecture in Figure 3 is applicable to the first node.

[0292] As an example, the wireless protocol architecture in Figure 3 is applicable to the second node.

[0293] As one embodiment, the first communication node device includes functions / services for controlling AIoT.

[0294] As one embodiment, the control plane 300 also includes an AIoT sublayer 308 for interacting with nodes that control AIoT functions. It should be noted that the AIoT sublayer 308 is not limited to having other names.

[0295] As one embodiment, the user plane 350 also includes an AIoT sublayer 357 for interacting with user data between the user plane and nodes controlling AIoT functions. It should be noted that the AIoT sublayer 357 is not limited to having other names.

[0296] As an example, the AIoT sublayer 308 is located above the RRC sublayer 306.

[0297] As an example, the AIoT sublayer 357 is located above the SDAP sublayer 356.

[0298] As an example, when the second communication node device is an AIoT device, the control plane 300 only includes the MAC sublayer 302 and the PHY sublayer 301.

[0299] As an example, when the second communication node device is an AIoT device, the control plane 300 only includes the AIoT sublayer 308, the MAC sublayer 302, and the PHY sublayer 301.

[0300] As an example, when the second communication node device is an AIoT device, the user plane 350 only includes the MAC sublayer 352 and the PHY sublayer 351.

[0301] As an example, when the second communication node device is an AIoT device, the user plane 350 only includes the AIoT sublayer 357, the MAC sublayer 352, and the PHY sublayer 351.

[0302] As an example, the first signaling is generated in at least one of the AIoT sublayer 308, the NAS sublayer 307, or the RRC sublayer 306.

[0303] As one embodiment, the second signaling is generated in at least one of the AIoT sublayer 308, the NAS sublayer 307, or the RRC sublayer 306.

[0304] As an example, the third signaling is generated in at least one of the AIoT sublayer 308, the NAS sublayer 307, or the RRC sublayer 306.

[0305] As an example, the fourth signaling is generated in at least one of the AIoT sublayer 308, the NAS sublayer 307, or the RRC sublayer 306.

[0306] As an example, the fifth signaling is generated in at least one of the AIoT sublayer 308, the NAS sublayer 307, or the RRC sublayer 306.

[0307] As an example, the sixth signaling is generated in at least one of the AIoT sublayer 308, the NAS sublayer 307, or the RRC sublayer 306.

[0308] Example 4

[0309] Example 4 illustrates a schematic diagram of a first communication device and a second communication device according to an embodiment of this application, as shown in Figure 4. Figure 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.

[0310] The first communication device 410 includes a controller / processor 475, a memory 476, a receiver processor 470, a transmitter processor 416, a multi-antenna receiver processor 472, a multi-antenna transmitter processor 471, a transmitter / receiver 418, and an antenna 420.

[0311] The second communication device 450 includes a controller / processor 459, a memory 460, a data source 467, a transmitting processor 468, a receiving processor 456, a multi-antenna transmitting processor 457, a multi-antenna receiving processor 458, a transmitter / receiver 454, and an antenna 452.

[0312] In the transmission from the first communication device 410 to the second communication device 450, at the first communication device 410, upper-layer data packets from the core network are provided to the controller / processor 475. The controller / processor 475 implements L2 layer functionality. In DL (Downlink), the controller / processor 475 provides header compression, encryption, packet segmentation and reordering, multiplexing between logical and transport channels, and radio resource allocation to the second communication device 450 based on various priority metrics. The controller / processor 475 is also responsible for HARQ operation, 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 L1 layer (i.e., physical layer). Transmit processor 416 performs encoding 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), and M-quadrature amplitude modulation (M-QAM). Multi-antenna transmit processor 471 performs digital spatial precoding on the encoded and modulated symbols, including codebook-based precoding and non-codebook-based precoding, and beamforming processing, generating one or more... Parallel streams. Transmit processor 416 then maps each parallel stream to a subcarrier, multiplexes the modulated symbols with a reference signal (e.g., a pilot) in the time and / or frequency domains, and then uses an inverse fast Fourier transform (IFFT) to generate a physical channel carrying the time-domain O-stream. Multi-antenna transmit processor 471 then performs transmit analog precoding / beamforming operations on the time-domain multicarrier symbol stream. Each transmitter 418 converts the baseband multicarrier symbol stream provided by multi-antenna transmit processor 471 into an RF stream, which is then provided to different antennas 420.

[0313] In the 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 corresponding antenna 452. Each receiver 454 recovers the information modulated onto the radio frequency carrier and converts the radio frequency stream into a baseband multicarrier symbol stream, which is then provided to the receiver processor 456. The receiver processor 456 and the multi-antenna receiver processor 458 implement various signal processing functions of the L1 layer. The multi-antenna receiver processor 458 performs receive analog precoding / beamforming operations on the baseband multicarrier symbol stream from the receiver 454. The receiver processor 456 uses a Fast Fourier Transform (FFT) to convert the baseband multicarrier symbol stream after the receive analog precoding / beamforming operations from the time domain to the frequency domain. In the frequency domain, the physical layer data signal and the reference signal are demultiplexed by the receiver processor 456, where the reference signal is used for channel estimation, and the data signal is recovered in the multi-antenna receiver processor 458 after multi-antenna detection to recover any parallel stream destined for the second communication device 450. Symbols on each parallel stream are demodulated and recovered in the receive processor 456, generating soft decisions. The receive processor 456 then decodes and deinterleaves the soft decisions to recover the upper-layer data and control signals transmitted over the physical channel by the first communication device 410. The upper-layer data and control signals are then provided to the controller / processor 459. The controller / processor 459 implements the functions of Layer 2 (L2). The controller / processor 459 may be associated with a memory 460 storing program code and data. The memory 460 may be referred to as computer-readable media. In the DL (Layered Logic), the controller / processor 459 provides multiplexing, packet reassembly, decryption, header decompression, and control signal processing between the transmission and logical channels to recover upper-layer packets from the core network. The upper-layer packets are then provided to all protocol layers above Layer 2. Various control signals may also be provided to Layer 3 (L3) for L3 processing. The controller / processor 459 is also responsible for error detection using ACK and / or NACK protocols to support HARQ operation.

[0314] 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 data packets to the controller / processor 459. The data source 467 represents all protocol layers above the L2 layer. Similar to the transmission functions at the first communication device 410 described in the DL, the controller / processor 459 implements header compression, encryption, packet segmentation and reordering, and multiplexing between logical and transport channels based on the radio resource allocation of the first communication device 410, implementing L2 layer functions 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. Transmit processor 468 performs modulation mapping and channel coding processing, while multi-antenna transmit processor 457 performs digital multi-antenna spatial precoding, including codebook-based and non-codebook-based precoding, and beamforming processing. Subsequently, transmit processor 468 modulates the generated parallel stream into a multi-carrier / single-carrier symbol stream. After analog precoding / beamforming operations in multi-antenna transmit processor 457, the stream is provided to different antennas 452 via transmitter 454. Each transmitter 454 first converts the baseband symbol stream provided by multi-antenna transmit processor 457 into a radio frequency symbol stream before providing it to antenna 452.

[0315] In the transmission from the second communication device 450 to the first communication device 410, the function at the first communication device 410 is similar to the receiving function at the second communication device 450 described in the transmission from the first communication device 410 to the second communication device 450. Each receiver 418 receives radio frequency signals through its corresponding antenna 420, converts the received radio frequency signals into baseband signals, and provides the baseband signals to the multi-antenna receiving processor 472 and the receiving processor 470. The receiving processor 470 and the multi-antenna receiving processor 472 jointly implement the L1 layer functions. The controller / processor 475 implements the L2 layer functions. The controller / processor 475 may be associated with a memory 476 that stores program code and data. The memory 476 may be referred to as computer-readable media. The controller / processor 475 provides multiplexing, packet reassembly, decryption, header decompression, and control signal processing between the transmission and logical channels to recover upper-layer data packets from the second communication device 450. The upper-layer data packets from the controller / processor 475 may be provided to the core network. The controller / processor 475 is also responsible for error detection using ACK and / or NACK protocols to support HARQ operation.

[0316] As one embodiment, the second communication device 450 includes: at least one processor and at least one memory, the at least one memory including computer program code; the at least one memory and the computer program code are configured to be used with the at least one processor. The second communication device 450 includes at least: receiving first signaling from a second node, the first signaling being used to indicate that a first AIoT device is associated with the first node and a third node; sending second signaling to the second node in response to any condition in a first set of conditions being met; wherein the first AIoT device is near the first node; the first set of conditions includes a change in the AIoT devices near the first node; and the second signaling indicating a change in the associated node of the first AIoT device.

[0317] As one embodiment, the second communication device 450 includes: a memory storing a computer-readable instruction program that, when executed by at least one processor, produces actions including: receiving a first signaling from a second node, the first signaling being used to indicate that a first AIoT device is associated with the first node and a third node; sending a second signaling to the second node in response to any condition in a first set of conditions being met; wherein the first AIoT device is near the first node; the first set of conditions includes a change in the AIoT devices near the first node; and the second signaling indicating a change in the associated node of the first AIoT device.

[0318] As one embodiment, the first communication device 410 includes: at least one processor and at least one memory, the at least one memory including computer program code; the at least one memory and the computer program code are configured to be used with the at least one processor. The first communication device 410 means at least: sending a first signaling to a first node, the first signaling being used to indicate that a first AIoT device is associated with the first node and a third node; receiving a second signaling from the first node; wherein the first AIoT device is near the first node; the first set of conditions includes a change in the AIoT device near the first node; the second signaling indicates a change in the associated node of the first AIoT device.

[0319] As one embodiment, the first communication device 410 includes: a memory storing a computer-readable instruction program that, when executed by at least one processor, produces actions including: sending a first signaling to a first node, the first signaling being used to indicate that a first AIoT device is associated with the first node and a third node; receiving a second signaling from the first node; wherein the first AIoT device is near the first node; the first set of conditions includes a change in the AIoT device near the first node; and the second signaling indicating a change in the associated node of the first AIoT device.

[0320] As an example, the first node in this application includes the second communication device 450.

[0321] As an example, the second node in this application includes the first communication device 410.

[0322] In 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).

[0323] As one embodiment, the second communication device 450 is a user equipment, and the first communication device 410 is a core network device (e.g., AMF, a node that controls AIoT functions / services).

[0324] 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 device that can function as a Reader).

[0325] As an example, when the second communication device 450 is an AIoT device, the second communication device 450 only includes some functions. For detailed schematic diagrams, please refer to the architecture diagram for AIoT devices in TR 38.769 or Example 11.

[0326] As one example, the user equipment is a terminal.

[0327] As one example, the access network device is a base station.

[0328] As an example, some or all of the following are used to transmit the first signaling: {the antenna 420, the transmitter 418, the transmission processor 416, the multi-antenna transmission processor 471, and the controller / processor 475}; and some or all of the following are used to receive the first signaling: {the antenna 452, the receiver 454, the receiving processor 456, the multi-antenna receiving processor 458, the controller / processor 459, and the memory 460}.

[0329] As an example, some or all of the following are used to transmit the second signaling: {the antenna 452, the transmitter 454, the transmission processor 468, the multi-antenna transmission processor 457, the controller / processor 459, and the data source 467}.

[0330] As an example, some or all of the following are used to receive the third signaling: {the antenna 452, the receiver 454, the receiving processor 456, the multi-antenna receiving processor 458, the controller / processor 459, and the memory 460}.

[0331] As an example, some or all of the following are used to transmit the fourth signaling: {the antenna 452, the transmitter 454, the transmission processor 468, the multi-antenna transmission processor 457, the controller / processor 459, and the data source 467}.

[0332] As an example, some or all of the following are used to transmit the fifth signaling: {the antenna 420, the transmitter 418, the transmission processor 416, the multi-antenna transmission processor 471, and the controller / processor 475}; and some or all of the following are used to receive the fifth signaling: {the antenna 452, the receiver 454, the receiving processor 456, the multi-antenna receiving processor 458, the controller / processor 459, and the memory 460}.

[0333] As an example, some or all of the following are used to transmit the sixth signaling: {the antenna 452, the transmitter 454, the transmission processor 468, the multi-antenna transmission processor 457, the controller / processor 459, and the data source 467}.

[0334] Example 5

[0335] Example 5 illustrates a transmission flowchart between a first node N1 and a second node N2 according to an embodiment of this application, as shown in Figure 5, where the step in block F0 is optional.

[0336] For the first node N1, in step S5101, a first signaling is received from the second node, which is used to indicate that the first AIoT device is associated with both the first node and the third node; in step S5102, as a response to the satisfaction of any condition in the first set of conditions, a second signaling is sent to the second node; wherein, the first AIoT device is near the first node; the first set of conditions includes changes in the AIoT devices near the first node; and the second signaling indicates a change in the associated node of the first AIoT device.

[0337] For the second node N2, in step S5201, a first signaling is sent to the second node, the first signaling being used to indicate that the first AIoT device is associated with the first node and the third node; in step S5202, a second signaling is received from the first node; wherein, the first AIoT device is near the first node; the first condition set includes changes in the AIoT devices near the first node; the second signaling indicates changes in the associated nodes of the first AIoT device.

[0338] As an example, please refer to the relevant descriptions of steps 101 and 102 in Example 1 for steps S5101 and S5102 respectively.

[0339] As one example, the second signaling is triggered by the first signaling.

[0340] As an example, for the third node N3, in step S5301, a third signaling is sent to the first node, the third signaling indicating that the first AIoT device is not near the third node; correspondingly, for the first node N1, in step S51011, a third signaling is received from the third node, the third signaling indicating that the first AIoT device is not near the third node.

[0341] As an example, the first set of conditions includes the first AIoT device not being near the third node.

[0342] As an example, the first set of conditions includes the inability of the first node and the third node to communicate.

[0343] As one embodiment, the first set of conditions includes the first AIoT device not being near the third node and the first node being unable to communicate with the third node.

[0344] As one embodiment, the "second signaling indicates a change in the associated node of the first AIoT device" includes: the second signaling indicates that the first AIoT device is not near the third node.

[0345] As one embodiment, the "second signaling indicates a change in the associated node of the first AIoT device" includes: the second signaling indicates that the first node and the third node cannot communicate.

[0346] As one embodiment, the "second signaling indicating a change in the associated node of the first AIoT device" includes: the second signaling indicating that the first AIoT device is not near the third node and that the first node and the third node cannot communicate.

[0347] As an example, step S5102 includes at least one of the following: determining whether an AIoT device near the first node has changed; determining whether the third signaling has been received; and determining whether communication with the third node is impossible.

[0348] As an example, for how to determine whether the AIoT device near the first node has changed, please refer to the example in Example 1 on how to determine whether the first AIoT device is nearby.

[0349] As one embodiment, step S5102 includes: in response to the fourth AIoT device being charged, the fourth AIoT device is considered to still be near the first node N1; wherein the fourth AIoT device was near the first node N1 before being charged.

[0350] As a sub-implementation of the above embodiment, step S5102 includes: receiving indication information #1 from the fourth AIoT device, the indication information #1 indicating that the fourth AIoT device is in a charging state.

[0351] As a sub-implementation of the above embodiment, step S5102 includes: receiving indication information #2 from the fourth AIoT device, the indication information #2 indicating that the fourth AIoT device is in a sleep state or an off state.

[0352] As a sub-implementation of the above embodiment, the indication information #1 or the indication information #2 is transmitted via PDRCH.

[0353] As a sub-implementation of the above embodiments, the indication information #1 or the indication information #2 is D2R signaling or D2R data.

[0354] In the above embodiments, the fourth AIoT device may be located away from the first node due to charging, but it is still physically located near the first node. Therefore, the content indicated by the first signaling may remain valid after the fourth AIoT device finishes charging. These embodiments help reduce the signaling overhead and power consumption of the first node, and lower the complexity of network maintenance.

[0355] As an example, please refer to the example of the first AIoT device in Example 1 for an example of the fourth AIoT device.

[0356] As one example, the fourth AIoT device is the first AIoT device.

[0357] As an example, the fourth AIoT device is the second AIoT device.

[0358] As an example, step S5201 includes: receiving the identifier of an AIoT device near the first node N1 and the identifier of an AIoT device near the third node N3.

[0359] The above embodiments facilitate the second node in determining the correspondence between the first node, the first AIoT device, and the third node, and generating the first signaling.

[0360] As an example, step S5301 includes: the third node N3 determining that the first AIoT device is not nearby.

[0361] As an example, for an example where the first AIoT device is not near the third node, please refer to the example in Example 1 where the first AIoT device is not near the first node.

[0362] As one embodiment, the first node N1 and the second node N2 are a user equipment (e.g., the UE in embodiment 2) and an access network device (e.g., the RAN device in embodiment 2), respectively.

[0363] Typically, but not limitingly, the first signaling is an RRC reconfiguration message, and the second signaling is a measurement report message.

[0364] Typically, but not limitingly, the first signaling is an RRC reconfiguration message, and the second signaling is a UE assistance information message.

[0365] As one embodiment, the first node N1 is a user equipment, and the second node N2 includes two access network devices.

[0366] As one embodiment, the second node N2 includes the last serving gNB of the first node N1 and the new base station accessed after the first node N1 restored the RRC connection.

[0367] As one embodiment, the second node N2 includes the last base station served by the first node N1 and the new base station accessed after the first node N1 underwent RRC connection re-establishment.

[0368] Typically, but not limitingly, the first signaling is an RRC release message, and the second signaling is an RRC recovery request message.

[0369] Typically, but not restrictively, the first signaling is an RRC release message, and the second signaling is an RRC re-establishment request message.

[0370] Typically, but not restrictively, the first node N1 transitions to the RRC Inactive state after receiving the first signaling.

[0371] As one 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.

[0372] Typically, but not limitingly, the first signaling is a registration acceptance message, and the second signaling is a registration request message.

[0373] Typically, but not limitingly, the first signaling is a registration acceptance message, and the second signaling is an uplink NAS transmission message.

[0374] Typically, but not restrictively, the first signaling is a configuration update command message, and the second signaling is a registration request message.

[0375] Typically, but not limitingly, the first signaling is a configuration update command message, and the second signaling is an uplink NAS transmission message.

[0376] As one embodiment, the first node N1 and the second node N2 are an access network device and a core network device, respectively.

[0377] Typically, but not limitingly, the first signaling is an NG establishment response message, and the second signaling is a RAN configuration update message.

[0378] Typically, but not restrictively, the first signaling is an AMF configuration update message, and the second signaling is an AMF configuration update acknowledgment message.

[0379] As an example, the third node N3 is a user equipment.

[0380] As a sub-implementation of the above embodiment, the first node N1 is a user equipment.

[0381] As a sub-implementation of the above embodiments, the third signaling is a V2X message or a PC5 message.

[0382] As a sub-implementation of the above embodiment, step S5102 includes: in response to detecting that there is no V2X / PC5 connection with the third node or that the V2X / PC5 connection with the third node has been released, determining that communication with the third node is impossible.

[0383] As a sub-implementation of the above embodiments, the first node N1 is a user equipment, the serving base station of the third node N3 is the same as the serving base station of the first node N1, and the third signaling includes RRC message #1 sent by the third node N3 to the serving base station and RRC message #2 sent by the serving base station to the first node N1; wherein, for an example of RRC message #1, please refer to the example of the second signaling regarding RRC message in Embodiment 1, and for an example of RRC message #2, please refer to the example of the first signaling regarding RRC message in Embodiment 1.

[0384] As a sub-implementation of the above embodiments, the first node N1 is a user equipment, and the serving base station of the third node N3 is different from the serving base station of the first node N1. The third signaling includes an RRC message #1 sent by the third node N3 to the serving base station of the third node N3, an XnAP message #1 sent by the serving base station of the third node N3 to the serving base station of the first node N1, and an RRC message #2 sent by the serving base station of the first node N1 to the first node N1. For an example of the RRC message #1, please refer to the example of the second signaling regarding RRC messages in Embodiment 1. For an example of the RRC message #2, please refer to the example of the first signaling regarding RRC messages in Embodiment 1.

[0385] As a sub-example of the above embodiment, the RRC message #1 includes the identifier of the first node N1.

[0386] As a sub-example of the above embodiment, the RRC message #1 includes indication information that the first AIoT device is not near the third node.

[0387] As a sub-example of the above embodiment, the RRC message #2 includes the identifier of the third node N3.

[0388] As a sub-example of the above embodiment, the RRC message #2 includes indication information that the first AIoT device is not near the third node.

[0389] As a sub-example of the above embodiment, the XnAP message #1 includes the identifier of the first node N1 and the identifier of the third node N3.

[0390] As a sub-example of the above embodiment, the XnAP message #1 includes indication information that the first AIoT device is not near the third node.

[0391] As a sub-implementation of the above embodiments, the XnAP message #1 is a message specifically for AIoT.

[0392] As a sub-example of the above embodiments, the XnAP message #1 is a non-UE-associated message.

[0393] As a sub-example of the above embodiments, the XnAP message #1 is an NG-RAN Node Configuration Update message.

[0394] As a sub-implementation of the above embodiment, the first node N1 is an access network device.

[0395] As a sub-implementation of the above embodiment, the first node N1 is the serving base station of the third node N3, and the third signaling is an RRC message; wherein, for an example of the third signaling, please refer to the example of the second signaling regarding the RRC message in Embodiment 1.

[0396] As a sub-implementation of the above embodiment, step S5102 includes: in response to detecting that there is no RRC connection with the third node or that the RRC connection with the third node has been released, determining that communication with the third node is impossible.

[0397] As a sub-example of the above embodiment, the first node N1 is a neighboring base station of the serving base station of the third node N3, and the third signaling includes the RRC message #1 sent by the third node N3 to the serving base station of the third node N3 and the XnAP message #1 sent by the serving base station of the third node N3 to the first node N1.

[0398] As a sub-implementation of the above embodiment, step S5102 includes: in response to detecting that there is no Xn connection between the third node and the serving base station or that the Xn connection between the third node and the serving base station is released, determining that communication with the third node is impossible.

[0399] As one example, the third node N3 is an access network device.

[0400] As a sub-implementation of the above embodiment, the first node N1 is a user equipment.

[0401] As a sub-implementation of the above embodiment, the third node N3 is the serving base station of the first node N1, and the third signaling is an RRC message; wherein, for an example of the third signaling, please refer to the example of the first signaling regarding the RRC message in Embodiment 1.

[0402] As a sub-implementation of the above embodiment, step S5102 includes: in response to detecting that there is no RRC connection with the third node or that the RRC connection with the third node has been released, determining that communication with the third node is impossible.

[0403] As a sub-implementation of the above embodiment, the third node N3 is a neighboring base station of the serving base station of the first node N1, and the third signaling includes an XnAP message #1 sent by the third node N3 to the serving base station of the first node N1 and an RRC message #2 sent by the serving base station of the first node N1 to the first node N1; wherein, for examples of the XnAP message #1 and the RRC message #2, please refer to the relevant examples in the previous embodiment.

[0404] As a sub-implementation of the above embodiment, the first node N1 is an access network device.

[0405] As a sub-implementation of the above embodiments, the third signaling is an XnAP message; for an example of the third signaling, please refer to the example of XnAP message #1 in the above embodiments.

[0406] As a sub-implementation of the above embodiment, step S5102 includes: in response to detecting that there is no Xn connection with the third node or that the Xn connection with the third node has been removed, determining that communication with the third node is impossible.

[0407] As one example, the user equipment is a terminal.

[0408] As one example, the access network device is a base station.

[0409] As an example, for a core network device example, please refer to the example of the core network device connected to the first node in Example 1.

[0410] Example 6

[0411] Example 6 illustrates a transmission flowchart of a first condition set according to an embodiment of the present application, where the first node and the third node cannot communicate, as shown in Figure 6.

[0412] For the first node N1, please refer to the relevant descriptions of steps S5101 and S5102 in Embodiment 5 for steps S6101 and S6102 respectively; in step S61011, a fourth signaling is sent, the fourth signaling including the identifier of the third node; in step S61012, a fifth signaling is received, the fifth signaling indicating that the first node and the third node cannot communicate.

[0413] For the second node N2, please refer to the relevant descriptions of steps S5201 and S5202 in Embodiment 5 for steps S6201 and S6202 respectively; in step S62011, a fourth signaling is received, the fourth signaling including the identifier of the third node; in step S62012, a fifth signaling is sent, the fifth signaling indicating that the first node and the third node cannot communicate.

[0414] As an example, Example 6 can be combined with Example 5.

[0415] As one embodiment, the second node N2 includes a first entity N21 and a second entity N22.

[0416] As an example, the first node N1 communicates with the third node through the second node N2.

[0417] As an example, the first node N1 and the third node communicate through the first entity N21.

[0418] As one embodiment, the second node N2 is a proxy node between the first node N1 and the third node.

[0419] As an example, the first entity N21 is a proxy node between the first node N1 and the third node.

[0420] As an example, the second node N2 transmits signaling or data between the first node N1 and the third node.

[0421] As an example, the first entity N21 transparently transmits signaling or data between the first node N1 and the third node.

[0422] As one embodiment, the first signaling is sent by the second entity N22; correspondingly, the second signaling is received by the second entity N22.

[0423] As one embodiment, the fourth signaling is received by the first entity N21; correspondingly, the fifth signaling is sent by the first entity N21.

[0424] As an example, please refer to the example of the second signaling in Example 1 or Example 5 for an example of the fourth signaling.

[0425] As an example, please refer to the example of the first signaling in Example 1 or Example 5 for an example of the fifth signaling.

[0426] As an example, the first signaling is used to trigger the fourth signaling.

[0427] As an example, the fourth signaling indicates whether communication with the third node is possible.

[0428] As one example, the second signaling indicates that the first node and the third node cannot communicate.

[0429] As an example, "the first node and the third node cannot communicate" means that the second node N2 and the third node cannot communicate.

[0430] As an example, "the first node and the third node cannot communicate" means that the first entity N21 and the third node cannot communicate.

[0431] As one embodiment, the fifth signaling includes the identifier of the third node.

[0432] As an example, step S61011 includes: the first node N1 sending the fourth signaling based on the first cycle.

[0433] The above embodiments are beneficial for the first node to know in a timely manner whether it can communicate with the third node.

[0434] As an example, step S62012 includes: in response to receiving the fourth signaling, determining whether communication with the third node is possible.

[0435] As an example, the fourth signaling indication is based on the second cycle detection to determine whether communication with the third node is possible.

[0436] As one embodiment, the fourth signaling instruction indicates that the fifth signaling is triggered in response to the absence of a connection with the third node or the connection being released.

[0437] In the two embodiments described above, the second node can trigger the fifth signaling based on a period or event, which helps to reduce the signaling overhead and power consumption of the first node and reduce the processing complexity of the second node.

[0438] As an example, step S61011 includes: sending the fourth signaling in response to receiving the first signaling.

[0439] As an example, how the fifth signaling indicates that the first node and the third node cannot communicate is usually determined by the equipment vendor. Some non-limiting implementations are given below.

[0440] Typically, but not limitingly, the fifth signaling includes bit information; for example, a bit value of "0" indicates that the first node and the third node cannot communicate, and a bit value of "1" indicates that the first node and the third node can communicate.

[0441] Typically, but not limitingly, the fifth signaling includes Boolean value information; for example, a Boolean value of "False" indicates that the first node and the third node cannot communicate, and a Boolean value of "True" indicates that the first node and the third node can communicate.

[0442] Typically, but not limitingly, the fifth signaling includes enumeration value information; for example, an enumeration value of "Out of connection" indicates that the first node and the third node cannot communicate; this enumeration value is only present when the first node and the third node cannot communicate.

[0443] As an example, the first node N1 is a user equipment (e.g., the UE in Example 2), the second node N2 or the first entity N21 is an access network device (e.g., the RAN device in Example 2), and the third node is a user equipment.

[0444] As a sub-implementation of the above embodiments, the second node N2 or the first entity N21 is the service access network device of the first node N1 and the third node.

[0445] As a sub-implementation of the above embodiment, step S62012 includes: in response to detecting that the RRC connection with the third node has been released, determining that communication with the third node is impossible.

[0446] As a sub-implementation of the above embodiments, the second node N2 or the first entity N21 is the serving access network device of the first node N1, and the serving access network device of the third node is the adjacent access network device of the second node N2 or the first entity N21.

[0447] As a sub-implementation of the above embodiment, step S62012 includes: in response to detecting that there is no Xn connection between the service access network device and the third node or that the Xn connection between the service access network device and the third node has been released, determining that communication with the third node is impossible.

[0448] As a sub-implementation of the above embodiment, step S62012 includes: in response to receiving indication information #3 indicating that the RRC connection between the serving access network device of the third node and the third node has been released, determining that communication with the third node is impossible.

[0449] As a sub-example of the above embodiment, the indication information #3 is an XnAP message.

[0450] As a sub-implementation of the above embodiment, the second entity N22 is the serving core network device of the first node N1.

[0451] As one embodiment, the first node N1 is a user equipment, the second node N2 or the first entity N21 is an access network device, and the third node is an access network device.

[0452] As a sub-implementation of the above embodiments, the second node N2 or the first entity N21 is the serving access network device of the first node N1, and the third node is the adjacent access network device of the second node N2 or the first entity N21.

[0453] As a sub-implementation of the above embodiment, step S62012 includes: in response to detecting that there is no Xn connection with the third node or that the Xn connection with the third node has been released, determining that communication with the third node is impossible.

[0454] As a sub-implementation of the above embodiment, the second entity N22 is the serving core network device of the first node N1.

[0455] As an example, the first node N1 is a user equipment, the second node N2 or the first entity N21 is a core network device (e.g., the core network device in Example 2), and the third node is a user equipment.

[0456] As a sub-implementation of the above embodiments, the second node N2 or the first entity N21 is the service core network device of the first node N1 and the third node.

[0457] As a sub-implementation of the above embodiment, step S62012 includes: in response to detecting that the NAS connection with the third node has been released, determining that communication with the third node is impossible.

[0458] As a sub-implementation of the above embodiment, the second entity N22 is the service access network device of the first node N1.

[0459] As one embodiment, the first node N1 is a user equipment, the second node N2 or the first entity N21 is a core network device, and the third node is an access network device.

[0460] As a sub-implementation of the above embodiments, the second node N2 or the first entity N21 is the serving core network device of the first node N1, and the third node has an NG connection with the second node N2 or the first entity N21, and the third node is not the serving access network device of the first node N1.

[0461] As a sub-implementation of the above embodiment, step S62012 includes: in response to detecting that the NG connection with the third node has been released, determining that communication with the third node is impossible.

[0462] As a sub-implementation of the above embodiment, the second entity N22 is the service access network device of the first node N1.

[0463] As one embodiment, the first node N1 is an access network device, the second node N2 or the first entity N21 is an access network device, and the third node is a user equipment.

[0464] As a sub-implementation of the above embodiments, the first node N1 is the adjacent access network device of the second node N2 or the first entity N21, and the second node N2 or the first entity N21 is the serving access network device of the third node.

[0465] As a sub-implementation of the above embodiment, step S62012 includes: in response to detecting that the RRC connection with the third node has been released, determining that communication with the third node is impossible.

[0466] As a sub-implementation of the above embodiment, the second entity N22 is the serving core network device of the first node N1.

[0467] As one embodiment, the first node N1 is an access network device, the second node N2 or the first entity N21 is a core network device, and the third node is a user equipment.

[0468] As a sub-implementation of the above embodiments, the second node N2 or the first entity N21 is the service core network device of the third node, there is an NG connection between the first node N1 and the second node N2 or the first entity N21, and the first node N1 is not the service access network device of the third node.

[0469] As a sub-implementation of the above embodiment, step S62012 includes: in response to detecting that the NAS connection with the third node has been released, determining that communication with the third node is impossible.

[0470] As a sub-implementation of the above embodiment, the second entity N22 is the service access network device of the first node N1.

[0471] As one embodiment, the first node N1 is an access network device, the second node N2 or the first entity N21 is a core network device, and the third node is an access network device.

[0472] As a sub-example of the above embodiment, both the first node N1 and the third node have NG connections with the second node N2 or the first entity N21.

[0473] As a sub-implementation of the above embodiment, step S62012 includes: in response to detecting that the NG connection with the third node has been released, determining that communication with the third node is impossible.

[0474] As a sub-implementation of the above embodiment, the second entity N22 is the service access network device of the first node N1.

[0475] As one example, the user equipment is a terminal.

[0476] As one example, the access network device is a base station.

[0477] As an example, for a core network device example, please refer to the example of the core network device connected to the first node in Example 1.

[0478] Example 7

[0479] Example 7 illustrates a flowchart of a determination process according to an embodiment of the present application, where the first condition set includes the determination that the hosted cell is not within the valid area, as shown in Figure 7. In Example 7, the first condition set includes the determination that the hosted cell is not within the valid area.

[0480] For the first node, please refer to the relevant descriptions of steps S5101 and S5102 in Embodiment 5 for steps S701 and S702 respectively; step S702 includes steps S7021 and S7022.

[0481] In response to receiving the first signaling, in step S7021, it is determined whether the first signaling includes the first area information. If it does, step S7022 is executed; otherwise, the process ends.

[0482] In step S7022, it is determined whether the camping cell is in the first area. If it is, the process ends; otherwise, step S702 is executed.

[0483] As one example, the first node is a user equipment.

[0484] As one example, the user equipment is a terminal.

[0485] As an example, Example 7 can be combined with at least one of Examples 5 and 6.

[0486] As one embodiment, the first signaling includes first area information; the first area information indicates the effective area where the first AIoT device is associated with the first node and the third node.

[0487] As an example, the effective area includes at least one region.

[0488] As an example, please refer to Example 1 for an example of the region.

[0489] As an example, the residing cell is a serving cell.

[0490] As one example, the fact that the residential cell is not within the effective area includes: the area of ​​the residential cell is not within the effective area.

[0491] As one embodiment, the "second signaling indicates a change in the associated node of the first AIoT device" includes: the second signaling indicates that the first AIoT device is associated with the first node and the third node is no longer valid.

[0492] As one embodiment, the "second signaling instructs the first AIoT device to change its associated node" includes: the second signaling instructs the first node to move out of the effective area.

[0493] As one embodiment, the "second signaling indicates a change in the associated node of the first AIoT device" includes: the second signaling indicates that the stationed cell is not in the effective area.

[0494] As one embodiment, the "second signaling indicating a change in the associated node of the first AIoT device" includes: the second signaling indicating a request to update the valid area where the first AIoT device is associated with the first node and the third node.

[0495] As one embodiment, the "second signaling indicates a change in the associated node of the first AIoT device" includes: the second signaling is used to initiate an update process for the first AIoT device to be associated with the first node and the effective area of ​​the third node.

[0496] Example 8

[0497] Example 8 illustrates a flowchart illustrating the determination of a first set of conditions according to an embodiment of this application, including at least one of handover occurrence, cell reselection occurrence, RRC connection recovery occurrence, and RRC connection re-establishment occurrence, as shown in Figure 8. In Example 8, the first set of conditions includes at least one of the following conditions: handover occurrence; cell reselection occurrence; RRC connection recovery occurrence; RRC connection re-establishment occurrence.

[0498] For the first node, please refer to the relevant descriptions of steps S5101 and S5102 in Embodiment 5 for steps S801 and S802 respectively; step S802 includes step S8021.

[0499] In response to receiving the first signaling, step S8021 determines at least one of the following: whether a handover has occurred; whether a cell reselection has occurred; whether an RRC connection has been restored; whether an RRC connection has been re-established; wherein the determination in step S8021 depends on the first set of conditions; if any condition in the first set of conditions is satisfied in step S8021, step S802 is executed; otherwise, the process ends.

[0500] As one example, the first node is a user equipment.

[0501] As one example, the user equipment is a terminal.

[0502] As an example, Example 8 can be combined with at least one of Examples 5 and 7.

[0503] As an example, the first set of conditions includes a switch occurrence, and step S8021 includes determining whether a switch has occurred. If a switch has occurred, step S802 is executed; otherwise, the process ends.

[0504] As an example, step S8021 includes: in response to receiving a message indicating a handover command, the first node determines that a handover has occurred.

[0505] As an example, step S8021 includes: in response to receiving an RRC reconfiguration message sent by the serving base station of the first node to trigger a handover procedure, the first node determines that a handover has occurred.

[0506] As an example, the first set of conditions includes cell reselection occurring, and step S8021 includes determining whether cell reselection has occurred. If it has occurred, step S802 is executed; otherwise, the process ends.

[0507] As an example, the first set of conditions includes the occurrence of RRC connection recovery. Step S8021 includes determining whether RRC connection recovery has occurred. If it has occurred, step S802 is executed. If not, the process ends.

[0508] As an example, step S8021 includes: in response to sending an RRC recovery request message, the first node determines that an RRC connection recovery has occurred.

[0509] As an example, step S8021 includes: in response to receiving an RRC Resume message sent by the serving base station of the first node, the first node determines that an RRC connection recovery has occurred.

[0510] As an example, the first condition set includes the occurrence of RRC connection re-establishment. Step S8021 includes determining whether RRC connection re-establishment has occurred. If it has occurred, step S802 is executed. If it is not satisfied, the process ends.

[0511] As an example, step S8021 includes: in response to sending an RRC re-establishment request message, the first node determines that an RRC connection re-establishment has occurred.

[0512] As an example, step S8021 includes: in response to receiving an RRC Reestablishment message sent by the serving base station of the first node, the first node determines that an RRC connection re-establishment has occurred.

[0513] As one embodiment, the second signaling indicates one of the following: handover occurs; cell reselection occurs; RRC connection recovery occurs; RRC connection re-establishment occurs.

[0514] In Example 8, the mobility of the first node may cause a change in the associated nodes of the first AIoT device. Therefore, the second signaling is triggered by the mobility of the first node, which is beneficial for the network to manage the relationship between the first AIoT device and its associated nodes in a timely manner after the first node moves.

[0515] Example 9

[0516] Example 9 illustrates a transmission flowchart of a first node sending a sixth signaling according to an embodiment of this application, as shown in Figure 9. The step in block F1 is optional. It should be noted that the order of the steps in Figure 9 is only one specific implementation method, and the order of the steps can be adjusted without conflict; for example, step S92011 may occur before step S9201, or the two may occur at overlapping times; correspondingly, step S91011 may occur before step S9101, or the two may occur at overlapping times.

[0517] For the first node N1, in step S9100, a sixth signaling is sent to the second node, the sixth signaling indicating that AIoT devices near the first node are supported to be associated with the first node and the fourth node; for steps S9101 and S9102, please refer to the relevant descriptions of steps S5101 and S5102 in Embodiment 5 respectively.

[0518] For the second node N2, in step S9200, a sixth signaling is received from the second node, the sixth signaling indicating support for AIoT devices near the first node to be associated with the first node and the fourth node; for steps S9201 and S9202, please refer to the relevant descriptions of steps S5201 and S5202 in Embodiment 5 respectively.

[0519] As an example, Example 9 may be combined with at least one of Examples 5 to 8.

[0520] As an example, please refer to the example of the second signaling for an example of the sixth signaling.

[0521] As an example, the sixth signaling is capability-related signaling.

[0522] As one embodiment, the sixth signaling includes a capability-related Information Element (IE).

[0523] As one embodiment, the first node N1 and the second node N2 are a user equipment (e.g., the UE in embodiment 2) and an access network device (e.g., the RAN device in embodiment 2), respectively.

[0524] As an example, the sixth signaling is a UE Capability Information message.

[0525] As one 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.

[0526] As an implementation, the sixth signaling includes 5GMM (5GS Mobility Management) capability IE.

[0527] As one embodiment, the first node N1 and the second node N2 are an access network device and a core network device, respectively.

[0528] As an example, the sixth signaling is an NG Setup Request message.

[0529] As an example, the first signaling is triggered by the sixth signaling.

[0530] As an example, for an example of the AIoT device near the first node, please refer to the example of the first AIoT device in Example 1.

[0531] As an example, please refer to the example of the third node in Example 1 for an example of the fourth node.

[0532] As an example, the support for AIoT devices near the first node to be associated with the first node and the fourth node means that the first node N1 supports other nodes that have deployed the Reader function to provide AIoT services in collaboration with at least one AIoT device near the first node N1.

[0533] As one embodiment, the sixth signaling includes an identifier that supports AIoT devices associated with the first node and the fourth node.

[0534] The above embodiments help the network understand which AIoT devices near the first node require cooperation from other nodes and generate the first signaling as needed.

[0535] As one example, the AIoT device near the first node includes the first AIoT device.

[0536] As an example, the fourth node includes the third node.

[0537] As an example, the first node N1 receives a seventh signaling in step S91011, the seventh signaling indicating a first condition set; correspondingly, the second node N2 sends a seventh signaling in step S92011, the seventh signaling indicating the first condition set.

[0538] The above embodiments are beneficial for strengthening the network's control over the first node and reducing the processing complexity of the first node.

[0539] As an example, please refer to the example of the first signaling for an example of the seventh signaling.

[0540] As an example, the seventh signaling is triggered by the first signaling.

[0541] As an example, the seventh signaling is the first signaling.

[0542] As one embodiment, the first signaling includes the first set of conditions.

[0543] As an example, step S91011 includes: in response to receiving the first set of conditions, the first node N1 evaluates whether any condition in the first set of conditions is satisfied.

[0544] As an example, the seventh signaling instruction indicates that the second signaling is sent in response to any condition in the first set of conditions being met.

[0545] As one embodiment, the first signaling instruction is sent as a response to any condition in the first set of conditions being met, in order to send the second signaling.

[0546] As one example, the user equipment is a terminal.

[0547] As one example, the access network device is a base station.

[0548] As an example, for a core network device example, please refer to the example of the core network device connected to the first node in Example 1.

[0549] Example 10

[0550] Example 10 illustrates a transmission flowchart of a first node receiving eighth signaling according to an embodiment of this application, as shown in Figure 10.

[0551] For the first node N1, please refer to the relevant descriptions of steps S5101 and S5102 in Embodiment 5 for steps S10101 and S10102 respectively; in step S10103, the eighth signaling is received, which is used to instruct the updating of the AIoT device and associated node near the first node;

[0552] For the second node N2, please refer to the relevant descriptions of steps S5201 and S5202 in Embodiment 5 for steps S10201 and S10202 respectively; in step S10203, an eighth signaling is sent, which is used to instruct the AIoT device and associated node near the first node to be updated.

[0553] As an example, Example 10 may be combined with at least one of Examples 5 to 9.

[0554] As one embodiment, the first node N1 and the second node N2 are a user equipment (e.g., the UE in embodiment 2) and an access network device (e.g., the RAN device in embodiment 2), respectively.

[0555] As one 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.

[0556] As one embodiment, the first node N1 and the second node N2 are an access network device and a core network device, respectively.

[0557] As one example, the user equipment is a terminal.

[0558] As one example, the access network device is a base station.

[0559] As an example, for a core network device example, please refer to the example of the core network device connected to the first node in Example 1.

[0560] As an example, please refer to the example of the first signaling for an example of the eighth signaling.

[0561] As an example, the eighth signaling is an update-related process.

[0562] As one example, the eighth signaling includes updating the associated IE.

[0563] As an example, the eighth signaling and the first signaling are signaling used for the same process; typically, but not limitingly, the eighth signaling and the first signaling are both RRC reconfiguration messages or both configuration update command messages, but the eighth signaling and the first signaling are not the same message.

[0564] As an example, the eighth signaling is triggered by the second signaling.

[0565] As an example, in response to the second signaling indicating that the first AIoT device is no longer associated with the first node or the third node, the eighth signaling indicates that the first AIoT device is no longer associated with the first node and the third node.

[0566] As one embodiment, the second signaling indicating that the first AIoT device is no longer associated with the first node or the third node includes: the second signaling indicating that the first AIoT device is not near the first node.

[0567] As one embodiment, the second signaling indicating that the first AIoT device is no longer associated with the first node or the third node includes: the second signaling indicating that the first AIoT device is not near the third node.

[0568] As one embodiment, the second signaling indicating that the first AIoT device is no longer associated with the first node or the third node includes: the second signaling indicating that the first node and the third node cannot communicate.

[0569] As one embodiment, the second signaling indicating that the first AIoT device is no longer associated with the first node or the third node includes: the second signaling indicating that the stationed cell is not in the effective area.

[0570] As an example, the "eighth signaling indicating that the first AIoT device is no longer associated with the first node and the third node" includes: the eighth signaling indicating that the association between the first AIoT device and the first node and the third node is no longer valid.

[0571] As one embodiment, the "eighth signaling instructs the first AIoT device to no longer be associated with the first node and the third node" includes: the eighth signaling instructs the removal of the association between the first AIoT device and the first node and the third node.

[0572] As one embodiment, in response to the second signaling indicating that the first AIoT device is associated with the new node, the eighth signaling indicates that the first AIoT device is associated with both the first node and the new node.

[0573] As an example, in response to the second signaling indicating that the second AIoT device changes from being near the first node to not being near the first node, the eighth signaling indicates that the second AIoT device is no longer associated with the first node and its associated nodes other than the first node.

[0574] As an example, in response to the second signaling indicating that the third AIoT device changes from being not near the first node to being near the first node, the eighth signaling indicates that the third AIoT device is associated with the first node and the associated nodes of the third AIoT device other than the first node.

[0575] As an example, step S10203 includes: the second node N2 sending indication information #4 to the third node, the indication information #4 instructing the third node to determine whether the first AIoT device is nearby.

[0576] The above embodiments enable the network to promptly know whether the first AIoT device is near the third node, thereby generating the eighth signaling.

[0577] As a sub-implementation of the above embodiment, in response to one of the following events: handover occurs, cell reselection occurs, RRC connection recovery occurs, or RRC connection re-establishment occurs, the second node N2 sends the indication information #4 to the third node.

[0578] As a sub-example of the above embodiment, in response to the first AIoT device being near the first node N1, the second node N2 sends the indication information #4 to the third node.

[0579] The above sub-implementation method helps to avoid unnecessary signaling overhead and power consumption for the third node.

[0580] As an example, step S10203 includes: in response to receiving indication information #5, the eighth signaling indicates that the first AIoT device is no longer associated with the first node and the third node; wherein, indication information #5 indicates that the first AIoT device is not near the third node.

[0581] As an example, for how the third node determines whether the first AIoT device is nearby, please refer to the example in Example 1 on how the first node determines whether the first AIoT device is nearby.

[0582] In Embodiment 10, the second signaling of the first node helps the auxiliary network to promptly indicate to the first node the update status of AIoT devices and their associated nodes near the first node, thereby ensuring the AIoT collaborative services provided by the first node.

[0583] Example 11

[0584] Example 11 illustrates a schematic diagram of the structure of an A-IoT device according to an embodiment of this application, as shown in Figure 11.

[0585] In Figure 11, the A-IoT device 1100 includes an antenna 1101, an energy-related module 1104, and a processing-related module 1108. The A-IoT device 1100 may also include a matching network 1102 for matching the impedance between the antenna 1101 and other components, including a radio frequency (RF) energy harvester 1103 and a receiver-related module 1109. The A-IoT device 1100 may also include an energy harvester, which can be either an RF energy harvester 1103 or a non-RF energy harvester 1107. The RF energy harvester 1103 may include a rectifier that performs RF signal (AC) to DC conversion. The RF energy harvester 1103 and the receiver / transmitter may share the antenna 1101, or they may use separate antennas. The energy-related module 1104 may include a power management unit (PMU) 1105; the PMU 1105 is responsible for storing energy from the energy harvester in energy storage 1106 and supplying power to active component blocks that require power. The energy-related module 1104 may also include energy storage 1106; the energy storage 1106 stores energy collected from the energy harvester, and the energy storage 1106 may be a capacitor. The processing module 1108 may include BB (Baseband) logic 1113, memory 1118, and clock generator 1119; the BB logic 1113 may include a decoder 1114, a controller 1115, and an encoder 1116; the memory 1118 may include two types: one is non-volatile memory (NVM), such as EEPROM, for permanent storage of the device ID; the other is a register for temporary storage, used only when energy in energy storage 1106 is available for temporarily needed information for operation; the clock generator 1119 provides the required clock signal. The processing module 1108 may also include reception-related blocks 1109 and transmission-related blocks 1117. For different A-IoT devices, reception-related blocks 1109 and transmission-related blocks 1117 may include different modules.

[0586] As an example, for an A-IoT device 1100 with a peak power consumption of approximately 1 μW, the receive correlation module 1109 may include an RF BPF 1110, an RF envelope detector (RF-ED), a BB LPF 1111, and a comparator 1112. The transmit correlation module 1117 may include a backscatter modulator.

[0587] As a non-limiting embodiment, the output of the matching network 1102 is processed sequentially by the RF BPF 1110, the RF envelope detector, the BB LPF 1111, and the comparator 1112 before being input to the BB logic 1113. The output of the BB logic 1113 is processed by the backscatter modulator and then transmitted by the antenna 1101.

[0588] As an example, for an A-IoT device 1100 with peak power consumption less than or equal to several hundred μW, if an external carrier wave is used, the receive-related module 1109 may include an RF BPF 1110, an LNA (Low-noise amplifier), an RF envelope detector, a BB amplifier, a BB LPF 1111, and a comparator / N-bit ADC 1112. The transmit-related module 1117 may include a large frequency shifter (e.g., tens of megahertz), a backscatter modulator, and a reflection amplifier. At least one of R2D (Reader to device) / CW2D (Carrier-wave, or carrier-wave node, to device) and D2R (Device to reader) can be amplified by the reflection amplifier or the LNA. The large frequency shifter shifts the backscattered signal from one frequency (e.g., an FDD-DL frequency) to another frequency (e.g., an FDD-UL frequency).

[0589] As a non-limiting embodiment, the output of the matching network 1102 is processed sequentially through an RF BPF 1110, an LNA, an RF envelope detector, a BB amplifier, a BB LPF 1111, and a comparator / N-bit ADC 1112 before being input to the BB logic 1113. The output of the BB logic 1113 is then processed by a large frequency shifter, a backscatter modulator, and a reflection amplifier before being transmitted by the antenna 1101.

[0590] As an example, for an A-IoT device 1100 with peak power consumption less than or equal to several hundred μW, if an internally generated carrier wave is used and an RF envelope detector receiver is employed, the receive-related module 1109 may include an RF BPF 1110, an LNA, an RF envelope detector, a BB amplifier, a BB LPF 1111, and a comparator / N-bit ADC 1112. The transmit-related module 1117 may include a transmit modulator (Tx modulator), a digital-to-analog converter (DAC), a low-pass filter, a mixer, a local oscillator (LO) / FLL ( / PLL), and a power amplifier (PA).

[0591] As a non-limiting embodiment, the output of the matching network 1102 is processed sequentially through an RF BPF 1110, an LNA, an RF envelope detector, a BB amplifier, a BB LPF 1111, and a comparator / N-bit ADC 1112 before being input to the BB logic 1113. The output of the BB logic 1113 is processed by a transmit modulator, a digital-to-analog converter, a low-pass filter, a mixer, a LO / FLL ( / PLL), and a power amplifier before being transmitted by the antenna 1101.

[0592] As an example, for an A-IoT device 1100 with peak power consumption less than or equal to several hundred μW, if an internally generated carrier wave is used and an intermediate frequency envelope detector (IF) receiver is employed, the receive-related module 1109 may include an RF BPF 1110, an LNA, a mixer, an IF amplifier, an IF filter, an IF envelope detector (IF-ED), a BB amplifier, a BB LPF 1111, and a comparator / N-bit ADC 1112. The transmit-related module 1117 may include a transmit modulator, a digital-to-analog converter, a low-pass filter, a mixer, a LO / FLL ( / PLL), and a power amplifier. The IF amplifier amplifies the IF signal. The IF filter filters unwanted RF and LO signals. The IF envelope detector detects the envelope from the IF signal. The mixer in the receive-related module 1109 down-converts the RF signal to the IF stage. Depending on the implementation, there can be one or two mixers for both the transmitter and receiver.

[0593] As a non-limiting embodiment, the output of the matching network 1102 is processed sequentially through an RF BPF 1110, an LNA, a mixer, an IF amplifier, an IF filter, an IF envelope detector, a BB amplifier, a BB LPF 1111, and a comparator / N-bit ADC 1112 before being input to the BB logic 1113. The output of the BB logic 1113 is processed by a transmit modulator, a digital-to-analog converter, a low-pass filter, a mixer, a LO / FLL ( / PLL), and a power amplifier before being transmitted by the antenna 1101.

[0594] As an example, for an A-IoT device 1100 with peak power consumption less than or equal to several hundred μW, if an internally generated carrier wave is used and a zero-IF (ZIF) receiver is employed, the receive-related module 1109 may include an RF BPF 1110, an LNA, a mixer, a BB amplifier, a BB LPF 1111, and a comparator / N-bit ADC 1112. The transmit-related module 1117 may include a transmit modulator, a digital-to-analog converter, a low-pass filter, a mixer, a LO / FLL ( / PLL), and a power amplifier. The mixer in the receive-related module 1109 down-converts the RF signal to the BB stage. Depending on the implementation, there may be one or two mixers for both the transmitter and receiver.

[0595] As a non-limiting embodiment, the output of the matching network 1102 is processed sequentially through an RF BPF 1110, an LNA, a mixer, a BB amplifier, a BB LPF 1111, and a comparator / N-bit ADC 1112 before being input to the BB logic 1113. The output of the BB logic 1113 is processed by a transmit modulator, a digital-to-analog converter, a low-pass filter, a mixer, a LO / FLL ( / PLL), and a power amplifier before being transmitted by the antenna 1101.

[0596] In the above embodiments, RF BPF 1110 is used to enhance selectivity; depending on the implementation, RF BPF 1110 may not be present. BB LPF 1111 is used to filter out harmonics and high-frequency components, improving the input signal quality of comparator / ADC 1112; depending on the implementation, BB LPF 1111 may not be present. Comparator 1112 is used to detect the high / low of the input signal. Backscatter modulator is used to convert impedance into a modulated backscatter signal carrying the transmit signal from BB logic 1113. LNA is used to improve signal strength and receiver sensitivity. RF envelope detector is used to detect the envelope from the RF signal. BB amplifier is used to amplify the signal to improve signal strength. Transmit modulator is used to modulate baseband bits according to the modulation scheme; the transmit modulator may be part of BB logic 1113. Digital-to-analog converter is used to convert digital signals to analog signals. Low-pass filter is used to filter out unwanted signals. The mixer in transmit correlation module 1117 is used to upconvert the baseband signal to the RF range. The LO (Local Optical Array) is used to generate the carrier frequency; the FLL ( / PLL) can be used for frequency synthesis, and depending on the implementation, the FLL ( / PLL) may not be present. The power amplifier is used to amplify the transmitted signal.

[0597] It should be noted that the structure of the A-IoT device in this example does not limit the specific implementation of A-IoT in this application. Specifically, depending on the different functions and actual application scenarios of the A-IoT device, the A-IoT device may adopt the structure of the A-IoT device in this example, or may include only some modules of the structure of the A-IoT device in this example, or may include other modules not shown in Figure 11.

[0598] Example 12

[0599] Example 12 illustrates a structural block diagram of a processing apparatus for a first node according to an embodiment of the present application; as shown in Figure 12. In Figure 12, the processing apparatus 1200 in the first node includes a first processor 1201.

[0600] The first processor 1201 receives a first signaling from the second node, the first signaling being used to indicate that the first AIoT device is associated with the first node and the third node; in response to any condition in the first set of conditions being met, it sends a second signaling to the second node; wherein the first AIoT device is near the first node; the first set of conditions includes changes in the AIoT devices near the first node; and the second signaling indicates a change in the associated node of the first AIoT device.

[0601] As an example, the first set of conditions includes the first AIoT device not being near the third node.

[0602] As an example, the first processor 1201 receives a third signaling from the third node, the third signaling indicating that the first AIoT device is not near the third node.

[0603] As an example, the first set of conditions includes the inability of the first node and the third node to communicate.

[0604] As one embodiment, the first processor 1201 sends a fourth signaling message to the second node, the fourth signaling message including the identifier of the third node; and receives a fifth signaling message from the second node, the fifth signaling message indicating that the first node and the third node cannot communicate.

[0605] As one embodiment, the first signaling includes first area information; the first area information indicates the effective area where the first AIoT device is associated with the first node and the third node; the first condition set includes the camping cell not being in the effective area.

[0606] As an example, the first set of conditions includes at least one of the following conditions: handover occurs; cell reselection occurs; RRC connection recovery occurs; RRC connection re-establishment occurs.

[0607] As one embodiment, the first processor 1201 sends a sixth signaling to the second node, the sixth signaling indicating support for AIoT devices near the first node to be associated with the first node and the fourth node.

[0608] As one example, the first node is a user equipment.

[0609] As one example, the first node is an access network device.

[0610] As one example, the user equipment is a terminal.

[0611] As one example, the access network device is a base station.

[0612] As an example, the first node is a relay node device.

[0613] As one embodiment, the first processor 1201 includes {antenna 420, transmitter 418, transmitter processor 416, multi-antenna transmitter processor 471, controller / processor 475, memory 476} as in embodiment 4.

[0614] As one embodiment, the first processor 1201 includes {antenna 420, receiver 418, receiver processor 470, multi-antenna receiver processor 472, controller / processor 475, memory 476} as in embodiment 4.

[0615] As one embodiment, the first processor 1201 includes {antenna 452, receiver 454, receiver processor 456, multi-antenna receiver processor 458, controller / processor 459, memory 460, data source 467} as in embodiment 4.

[0616] As an example, the first processor 1201 includes {antenna 452, transmitter 454, transmitter processor 468, multi-antenna transmitter processor 457, controller / processor 459, memory 460, data source 467} as in Example 4.

[0617] Example 13

[0618] Example 13 illustrates a structural block diagram of a processing apparatus for a second node according to an embodiment of the present application; as shown in Figure 13. In Figure 13, the processing apparatus 1300 in the second node includes a second processor 1301.

[0619] The second processor 1301 sends a first signaling to the first node, the first signaling being used to indicate that the first AIoT device is associated with the first node and the third node; receives a second signaling from the first node; wherein the first AIoT device is near the first node; the first condition set includes a change in the AIoT device near the first node; the second signaling indicates a change in the associated node of the first AIoT device.

[0620] As an example, the first set of conditions includes the first AIoT device not being near the third node.

[0621] As an example, the first set of conditions includes the inability of the first node and the third node to communicate.

[0622] As one embodiment, the second processor 1301 receives a fourth signaling from the first node, the fourth signaling including the identifier of the third node; and sends a fifth signaling to the first node, the fifth signaling indicating that the first node and the third node cannot communicate.

[0623] As one embodiment, the first signaling includes first area information; the first area information indicates the effective area where the first AIoT device is associated with the first node and the third node; the first condition set includes the camping cell not being in the effective area.

[0624] As an example, the first set of conditions includes at least one of the following conditions: handover occurs; cell reselection occurs; RRC connection recovery occurs; RRC connection re-establishment occurs.

[0625] As one embodiment, the second processor 1301 receives a sixth signaling from the first node, the sixth signaling indicating support for AIoT devices near the first node to be associated with the first node and the fourth node.

[0626] In one embodiment, the second node is an access network device.

[0627] As one example, the second node is a core network device.

[0628] As one example, the access network device is a base station.

[0629] As one embodiment, the second node is a relay node device.

[0630] As one embodiment, the second processor 1301 includes {antenna 420, transmitter 418, transmitter processor 416, multi-antenna transmitter processor 471, controller / processor 475, memory 476} as in embodiment 4.

[0631] As one embodiment, the second processor 1301 includes {antenna 420, receiver 418, receiver processor 470, multi-antenna receiver processor 472, controller / processor 475, memory 476} as in embodiment 4.

[0632] Those skilled in the art will understand that all or part of the steps in the above methods can be implemented by a program instructing related hardware, and the program can be stored in a computer-readable storage medium, such as a read-only memory, hard disk, or optical disk. Optionally, all or part of the steps in the above embodiments can also be implemented using one or more integrated circuits. Accordingly, each module unit in the above embodiments can be implemented in hardware or in the form of software functional modules. This application is not limited to any specific combination of software and hardware. The user equipment, terminal, and UE in this application include, but are not limited to, drones, communication modules on drones, remote-controlled aircraft, aircraft, small aircraft, mobile phones, tablets, laptops, vehicle-mounted communication equipment, vehicles, RSUs, wireless sensors, internet access cards, IoT terminals, RFID terminals, NB-IoT terminals, MTC (Machine Type Communication) terminals, eMTC (enhanced MTC) terminals, data cards, internet access cards, vehicle-mounted communication equipment, low-cost mobile phones, low-cost tablets, and other wireless communication devices. The base stations or system equipment in this application include, but are not limited to, macrocell base stations, microcell base stations, small cell base stations, home base stations, relay base stations, eNBs, gNBs, TRPs (Transmitter Receiver Points), GNSS, relay satellites, satellite base stations, airborne base stations, RSUs (Road Side Units), drones, and testing equipment, such as transceivers or signaling testers that simulate some functions of a base station, and other wireless communication equipment.

[0633] Those skilled in the art will understand that the present invention can be practiced in other specified forms without departing from its core or essential characteristics. Therefore, the embodiments disclosed herein should in any way be considered descriptive rather than restrictive. The scope of the invention is defined by the appended claims rather than the foregoing description, and all modifications within their equivalent meaning and scope are considered to be included therein.

Claims

1. A method for a first node used for wireless communication, the method comprising: Comprising: receiving, from a second node, first signaling, the first signaling being used to indicate that a first AIoT device is associated to the first node and a third node; in response to any condition in a first set of conditions being met, sending, to the second node, second signaling; wherein the first AIoT device is in proximity to the first node; the first set of conditions comprises a change of AIoT devices in proximity to the first node; the second signaling indicates a change of associated nodes of the first AIoT device.

2. The method of claim 1, wherein, the first set of conditions comprises that the first AIoT device is not in proximity to the third node.

3. The method of claim 2, wherein, Comprising: receiving, from the third node, third signaling, the third signaling indicating that the first AIoT device is not in proximity to the third node.

4. The method according to any one of claims 1 to 3, characterized in that, the first set of conditions comprises that the first node and the third node are unable to communicate.

5. The method of claim 4, wherein, Comprising: sending, to the second node, fourth signaling, the fourth signaling comprising an identification of the third node; receiving, from the second node, fifth signaling, the fifth signaling indicating that the first node and the third node are unable to communicate.

6. The method according to any one of claims 1 to 5, characterized in that, the first signaling comprises first area information; the first area information indicates a valid area in which the first AIoT device is associated to the first node and the third node; the first set of conditions comprises that a camping cell is not within the valid area.

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: a handover occurs; a cell reselection occurs; an RRC connection resume occurs; an RRC connection reestablishment occurs.

8. The method according to any one of claims 1 to 7, characterized in that, Comprising: sending, to the second node, sixth signaling, the sixth signaling indicating that an AIoT device in proximity to the first node is supported to be associated to the first node and a fourth node.

9. A terminal used for wireless communication, characterized in that, Comprising: the terminal comprises one or more processors and a memory; the memory is coupled to the one or more processors, and the memory is configured to store computer program codes, the computer program codes comprising computer instructions, and the one or more processors are configured to invoke the computer instructions to cause the terminal to perform the method according to any one of claims 1-8.

10. 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, and the memory is configured to store computer program codes, the computer program codes comprising computer instructions, and the one or more processors are configured to invoke the computer instructions to cause the base station to perform the method according to any one of claims 1-8.

11. A method for a second node used for wireless communication, the method comprising: Comprising: sending, to a first node, first signaling, the first signaling being used to indicate that a first AIoT device is associated to the first node and a third node; receiving, from the first node, second signaling; wherein the first AIoT device is in proximity to the first node; the first set of conditions comprises a change of AIoT devices in proximity to the first node; the second signaling indicates a change of associated nodes of the first AIoT device.

12. The method of claim 11, wherein, the first set of conditions comprises that the first AIoT device is not in proximity to the third node.

13. The method according to claim 11 or 12, characterized in that, the first set of conditions comprises that the first node and the third node are unable to communicate.

14. The method of claim 13, wherein, Comprising: receiving, from the first node, fourth signaling, the fourth signaling comprising an identity of the third node; sending, to the first node, fifth signaling, the fifth signaling indicating that the first node and the third node are unable to communicate.

15. The method according to any one of claims 11 to 14, characterized in that, The first signaling comprises first area information; the first area information indicates that the first AIoT device is associated to valid areas of the first node and the third node; the first condition set comprises that a camped cell is not within the valid areas.

16. The method according to any one of claims 11 to 15, characterized in that, The first condition set comprises at least one of the following conditions: handover occurs; cell reselection occurs; RRC connection recovery occurs; RRC connection reestablishment occurs.

17. The method of any one of claims 11 to 16, wherein, Comprising: receiving, from the first node, sixth signaling, the sixth signaling indicating that AIoT devices in proximity of the first node are associated to the first node and a fourth node.

18. A base station for wireless communication, comprising: Comprising: The base station comprises one or more processors and a memory; The memory is coupled to the one or more processors, and the memory is configured to store computer program codes, the computer program codes comprising computer instructions, and the one or more processors are configured to invoke the computer instructions to cause the base station to perform the method according to any one of claims 11-17.

19. A core network device for wireless communication, comprising: Comprising: The core network device comprises one or more processors and a memory; The memory is coupled to the one or more processors, and the memory is configured to store computer program codes, the computer program codes comprising computer instructions, and the one or more processors are configured to invoke the computer instructions to cause the core network device to perform the method according to any one of claims 11-17.

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