Configuration of trigger conditions for activator and reader reconfiguration or selection

Abstract

An example method may include receiving, by a reader in an environmental Internet of Things (AIoT) wireless system including an AIoT device, the reader, and an activator, a configuration including a time-frequency resource for reading a reply signal transmitted by the AIoT device in response to an activation signal transmitted by the activator, and a trigger condition for causing the reader to send a reconfiguration trigger signal to the session control unit; evaluating, by the reader, the trigger conditions to determine that at least one of the trigger conditions has been satisfied or implemented; and transmitting, by the reader, a reconfiguration trigger signal to the session control unit to cause the AIoT to activate and read a reconfiguration of the session, in which the reconfiguration trigger signal includes a trigger cause based on at least one of the trigger conditions that has been satisfied or implemented.

Description

[0001] Related Applications This application claims priority to and the benefit of U.S. Provisional Application No. 63 / 505,668, filed June 1, 2023, the entire contents of which are incorporated herein by reference. TECHNICAL FIELD

[0002] The present specification relates to wireless communication. BACKGROUND

[0003] A communication system can be a facility that enables communication between two or more nodes or devices such as fixed or mobile communication devices. Signals can be carried on wired or wireless carriers.

[0004] An example of a cellular communication system is the architecture standardized by the Third Generation Partnership Project (3GPP). A recent development in the field is commonly known as Long-Term Evolution (LTE) of the Universal Mobile Telecommunication System (UMTS) radio access technology. EUTRA (Evolved UMTS Terrestrial Radio Access) is the air interface defined by 3GPP for fourth-generation long-term evolution (LTE) upgrades to mobile networks. In LTE, base stations or access points, referred to as enhanced Node B's (eNBs), provide wireless access to user equipments (UEs) within a coverage area or cell. In LTE, mobile devices or mobile stations are referred to as UEs. LTE has included many improvements or developments. Aspects of LTE are continuing to improve 5G New Radio (NR) development is part of a continuing mobile broadband evolution promulgated by 5G requirements. It is similar to earlier evolution of 3G and 4G wireless networks. In addition, 5G is targeted at new and emerging use cases including machine type communication (MTC) and the Internet of Things (IoT). The goal of 5G is to provide significant improvement in wireless performance including new levels of data rate, latency, reliability, and security. 5G NR can also expand to efficiently connect a very large number of IoT devices. New types of devices and services can require, for example, high-reliability and low-latency. 6G and beyond networks are also in development. SUMMARY

[0005] According to an example embodiment, a method may include: receiving configuration via a reader in an Ambient Internet of Things (AIoT) wireless system, the AIoT wireless system including an AIoT device, a reader, and an activator, the configuration including time-frequency resources for reading a response signal sent by the AIoT device in response to an activation signal sent by the activator, and triggering conditions for causing the reader to send a reconfiguration trigger signal to a session control unit; evaluating the triggering conditions via the reader to determine that at least one of the triggering conditions has been met or achieved; and sending the reconfiguration trigger signal to the session control unit via the reader to cause AIoT activation and read session reconfiguration, wherein the reconfiguration trigger signal includes a triggering reason based on at least one of the triggering conditions being met or achieved.

[0006] According to another example embodiment, a method may include: receiving configuration via an activator in an Ambient Internet of Things (AIoT) wireless system, the AIoT wireless system including an AIoT device, a reader, and an activator, the configuration including time-frequency resources for transmitting an activation signal, and triggering conditions for causing the activator to send a reconfiguration trigger signal to a session control unit; evaluating the triggering conditions via the activator to determine that at least one of the triggering conditions has been met or achieved; and sending the reconfiguration trigger signal to the session control unit via the activator to cause reconfiguration of the AIoT activation and reading session, wherein the reconfiguration trigger signal includes a triggering reason based on at least one of the triggering conditions being met or achieved.

[0007] According to another example embodiment, a method may include: transmitting configuration via a session control unit in an Ambient Internet of Things (AIoT) wireless system, the AIoT wireless system including AIoT devices, readers, and activators, the configuration including time-frequency resources for transmitting at least one of activation signals and response signals, and triggering conditions that cause at least one of the activators and readers to transmit a reconfiguration trigger signal if at least one of the triggering conditions is met or achieved; receiving the reconfiguration trigger signal from at least one of the activators and readers via the session control unit, the reconfiguration trigger signal including a triggering reason based on at least one of the triggering conditions being met or achieved; and performing reconfiguration of an AIoT activation and reading session via the session control unit based on the reconfiguration trigger signal.

[0008] Other example embodiments are provided or described for each example method in the example methods, including: components for performing any example method; a non-transitory computer-readable storage medium including instructions stored thereon, which, when executed by at least one processor, are configured to cause a computing system to perform any example method; and means including at least one processor; and at least one memory storing instructions that, when executed by at least one processor, cause the means to perform at least any example method.

[0009] Details of one or more examples of embodiments are set forth in the accompanying drawings and the following description. Other features will be apparent from the specification, drawings, and claims. Attached Figure Description

[0010] Figure 1 This is a block diagram of a wireless network according to an example embodiment.

[0011] Figure 2 This is a diagram illustrating an AIoT wireless system according to an example embodiment.

[0012] Figure 3 This is a diagram illustrating an AIoT wireless system according to another example embodiment.

[0013] Figure 4 This is a diagram illustrating an AIoT wireless system according to yet another example embodiment.

[0014] Figure 5 This is a diagram illustrating the operation of a reader in an AIoT wireless system according to an example embodiment.

[0015] Figure 6 This is a flowchart illustrating the operation of an activator in an AIoT wireless system according to an example embodiment.

[0016] Figure 7 This is a flowchart illustrating the operation of a session control unit (SCU) in an AIoT wireless system according to an example embodiment.

[0017] Figure 8 This is a diagram of an AIoT wireless system or network according to an example embodiment, in which a reader sends a reconfiguration trigger signal to the SCU.

[0018] Figure 9 This is a diagram of an AIoT wireless system or network according to an example embodiment, wherein the activator sends a reconfiguration trigger signal to the SCU.

[0019] Figure 10 It is a block diagram of a wireless station or node (e.g., AP, BS, RAN node, UE, or user equipment or network node). Detailed Implementation

[0020] Figure 1 This is a block diagram of a wireless network 130 according to an example embodiment. Figure 1 In the wireless network 130, user equipment 131, 132, 133, and 135, also referred to as mobile stations (MS) or user equipment (UE), can connect to (and communicate with) a base station (BS) 134, which can also be referred to as an access point (AP), an enhanced node B (eNB), a gNB, or a network node. The terms user equipment and user equipment (UE) are used interchangeably. The BS may also include or be referred to as a RAN (Radio Access Network) node, and in the case of splitting the BS or splitting the gNB, may include a portion of the BS or a portion of the RAN node, such as, for example, a centralized unit (CU) and / or a distributed unit (DU). At least a portion of the functionality of the BS (e.g., an access point (AP), a base station (BS), or an (e) Node B (eNB), gNB, RAN node) can also be performed by any node, server, or host operatively coupled to a transceiver (such as a remote radio head). BS (or AP) 134 provides wireless coverage within cell 136, including coverage to user equipment (or UE) 131, 132, 133, and 135. Although only four user equipment (or UE) are shown connected to or attached to BS 134, any number of user equipment can be provided. BS 134 is also connected to core network 150 via NG interface 151. This is just a simplified example of a wireless network, and other networks can be used.

[0021] A base station (e.g., such as BS 134) is an example of a radio access network (RAN) node within a wireless network. A BS (or RAN node) can be or may include (or alternatively referred to as) such as an access point (AP), gNB, eNB, or a portion thereof (such as a centralized unit (CU) and / or distributed unit (DU) in the case of a separate BS or separate gNB) or other network node.

[0022] According to illustrative examples, a BS node (e.g., BS, eNB, gNB, CU / DU, etc.) or a radio access network (RAN) can be part of a mobile telecommunications system. The RAN (Radio Access Network) may include one or more BS or RAN nodes implementing radio access technologies, for example, to allow one or more UEs to access the network or core network. Thus, for example, the RAN (RAN node, such as BS or gNB) may reside between one or more user equipments or UEs and the core network. According to example embodiments, each RAN node (e.g., BS, eNB, gNB, CU / DU, etc.) or BS may provide one or more wireless communication services for one or more UEs or user equipments, for example, to allow UEs to wirelessly access the network via the RAN node. Each RAN node or BS may perform or provide wireless communication services, such as allowing a UE or user equipment to establish a wireless connection to the RAN node, and sending data to one or more UEs and / or receiving data from one or more UEs. For example, after establishing a connection to a UE, the RAN node or network node (e.g., BS, eNB, gNB, CU / DU, etc.) may forward data received from the network or core network to the UE, and / or forward data received from the UE to the network or core network. RAN nodes or network nodes (e.g., BS, eNB, gNB, CU / DU, etc.) can perform a variety of other radio functions or services, such as broadcasting control information to the UE (e.g., system information or on-demand system information), paging the UE when data to be delivered to the UE is available, assisting the UE in handover between cells, scheduling uplink data transmission from the UE and downlink data transmission to the UE, sending control information to configure one or more UEs, etc. These are just a few examples of one or more functions that a RAN node or BS can perform.

[0023] User equipment (user terminal, user equipment (UE), mobile terminal, handheld wireless device, etc.) can refer to portable computing devices that operate with or without a subscriber identification module (SIM) for wireless mobile communication, including but not limited to the following types of devices: mobile station (MS), mobile phone, cellular phone, smartphone, personal digital assistant (PDA), handheld device, device using a wireless modem (alarm or measuring device, etc.), laptop and / or touchscreen computer, tablet computer, tablet phone, game console, laptop, vehicle, sensor and multimedia device, as an example, or any other wireless device. It should be understood that user equipment can also be (or may include) a virtually exclusive uplink-only device, an example of which is a camera or video camera that loads image or video clips onto the network.

[0024] In LTE (as an illustrative example), the core network 150 may be referred to as the Evolved Packet Core (EPC), which may include a Mobility Management Entity (MME) that can handle or assist user equipment in mobility / handover between BSs, one or more gateways that can forward data and control signals between the BS and a packet data network or the Internet, and other control functions or blocks. Other types of wireless networks, such as 5G (which may be referred to as New Radio (NR)), may also include a core network.

[0025] Furthermore, the technologies described in this paper can be applied to various types of user equipment or data service types, or to user equipment that can have multiple applications running on it, which can be different data service types. New 5G (NR) development can support several different applications or several different data service types, such as, for example: Machine Type Communication (MTC), Enhanced Machine Type Communication (eMTC), Internet of Things (IoT), and / or Narrowband IoT user equipment, Enhanced Mobile Broadband (eMBB), and Ultra-Reliable and Low Latency Communication (URLLC). Many of these new 5G (NR) related applications often require higher performance than previous wireless networks.

[0026] The Internet of Things (IoT) can refer to a growing group of objects that possess internet or network connectivity, enabling them to send and receive information from other network devices. For example, many sensor-type applications or devices can monitor physical conditions or states and, for instance, send reports to servers or other network devices when events occur. Machine-to-machine communication (MTC) can be characterized, for example, as the fully automated generation, exchange, processing, and driving of data between intelligent machines, with or without human intervention. Enhanced Mobile Broadband (eMBB) can support data rates significantly higher than those currently available in LTE.

[0027] Ultra-Reliable and Low-Latency Communication (URLLC) represents a new type of data service or use case that new radio (5G) systems can support. This enables emerging new applications and services, such as industrial automation, autonomous driving, vehicle safety, and eHealth services. As an illustrative example, 3GPP aims to provide corresponding 10... -5 The reliability of a connection requires a low block error rate (BLER) and a maximum U-plane (user / data plane) latency of 1 millisecond. Therefore, for example, a URLLC user equipment / UE may require a significantly lower block error rate and lower latency than other types of user equipment / UEs (regardless of whether high reliability is required simultaneously). Thus, for example, a URLLC UE (or a URLLC application on a UE) may require shorter latency compared to an eMBB UE (or an eMBB application running on the UE).

[0028] The techniques described herein can be applied to a variety of wireless technologies or wireless networks, such as LTE, LTE-A, 5G (New Radio (NR)), centimeter wave and / or millimeter wave band networks, IoT, MTC, eMTC, eMBB, URLLC, 6G, etc., or any other wireless network or wireless technology. These example networks, technologies, or data service types are provided as illustrative examples only.

[0029] Due to the increasing number of wirelessly connected devices or gadgets (e.g., due to the Internet of Things (IoT) paradigm), new energy-efficient communication technologies and devices are being developed. According to example implementations, environmental networks or systems can use low-power communication technologies where an environmental IoT (AIoT) device or backscattering device can receive ambient (or surrounding) wireless signals (e.g., signals that may have been transmitted to another wireless device) and then reflect the received ambient signals, for example, via backscattering communication. For example, AIoT devices or backscattering communication can utilize existing or surrounding wireless signals by reflecting them to communicate between devices using extremely low power. Thus, for example, ambient (or surrounding) wireless signals can be reused as an energy source (e.g., to power one or more electronic devices on a wireless sensor node or wireless AIoT device) and a communication medium. According to example embodiments, environmental communication (or environmental backscattering communication) can allow an AIoT device (or backscattering device) to modulate and reflect received ambient signals. For example, reflected backscattered signals can be modulated using active (or switched) load modulation, where the load on the antenna (of the transmitting backscattering device or AIoT device) is changed or altered, allowing the reflected signal to carry different data values ​​(e.g., different phases), such as same-pole or opposite-pole or signals (in the simple case of bipolar signals), depending on the load applied to the antenna. This can, for example, allow an AIoT device (or backscattering device) to modulate data onto the reflected or backscattered signal, indicating the AIoT device's location, providing monitoring data from sensors, or other data.

[0030] The number of IoT connections has grown rapidly in recent years, and is projected to reach hundreds of billions by 2030. As more and more "things" are expected to interconnect to improve productivity and enhance quality of life, there are further demands for reductions in the size, cost, and power consumption of IoT devices. In particular, regularly replacing the batteries of all IoT devices is impractical due to the enormous consumption of materials and manpower. Utilizing energy harvested from the environment to power IoT devices for self-sustaining communication has become a trend, especially in applications with a large number of devices such as ID tags and sensors.

[0031] According to an example embodiment, an Ambient Internet of Things (AIoT) wireless system or backscatter communication system may include: an activator that provides a radio frequency (RF) (or wireless signal) source as an activation signal; an AIoT device (e.g., a backscatter device) that acts as a backscatter transceiver and transmits a response signal based on the activation signal; and a reader that receives the response signal transmitted by the AIoT device. The activator may transmit or send RF (or wireless signal) signals to activate the AIoT device, which can be used as a backscatter transmitter. Furthermore, for at least some types of AIoT devices, the backscatter transmitter of the AIoT device may modulate and reflect the incoming RF signal. Therefore, according to an example embodiment, an AIoT wireless system (or backscatter communication system) may include: an activator for transmitting an activation signal, an AIoT device for receiving the activation signal and generating a response signal (based on the activation signal) that is transmitted or reflected (e.g., may include data modulated thereon), and a reader for receiving the response signal.

[0032] For example, backscatter communication systems can have two main configurations: monolithic and dilithic. In a monolithic configuration, the RF (or ambient wireless signal) source (also called the activator) and the backscatter receiver (also called the reader) are (or may be) co-located (e.g., attached or connected, or provided at the same location or site). The backscatter transmitter (provided at the AIoT device) is (or may be) physically separate. This is the most common configuration in RFID backscatter systems. In a dilithic configuration, the RF source (activator), the backscatter transmitter (AIoT device), and the backscatter receiver (reader, which receives the response signal sent or reflected by the AIoT device based on the activation signal from the activator) are in different physical locations. This configuration can employ either a dedicated RF source for active transmission or an existing ambient source (such as a cellular base station, TV tower, WiFi, or other wireless signal source).

[0033] Example backscatter transmitters (e.g., AIoT devices) can be configured to reflect incoming signals from an RF (or wireless signal) source via impedance mismatch. This is achieved by alternately changing the antenna impedance to switch between an absorption state and a reflection state via load modulation, resulting in the envelope of the reflected signal having different amplitude levels. This allows the backscatter transmitter to modulate information bits onto the reflected signal. A backscatter receiver, for example, provided at a reader, interprets the absorption and reflection states as modulations of different information bits. In some cases, during reflection operation, the backscatter transmitter (or AIoT device) can alter the amplitude and phase of the incoming signal to generate a response signal (e.g., a reflected backscatter signal).

[0034] An AIoT wireless system may include one or more devices, nodes, or functions, such as: Activator: A device that sends an activation (wake-up) signal to wake up or activate AIoT devices via a passive radio. The activation signal may include the ID of the AIoT device or the passive device. The activation signal can be used to activate one or a group of AIoT devices.

[0035] Ambient IoT (AIoT) devices: Detect the activation signal from the activator, then modulate and reflect the received activation signal as a response signal, for example, as a backscattered signal. The data modulated onto this response signal may include the AIoT device's ID (identifier or identifier), the AIoT device's location, measurement or sensor data, etc.

[0036] In some cases, AIoT devices may include passive radios that harvest energy within a certain frequency range and listen for activation signals. Once such a signal is detected, the passive radio transmits / reflects a signal specific to that radio ID (e.g., a reply signal). For example, a passive radio is a device that harvests energy from wireless signals transmitted on a specific carrier and / or bandwidth to charge a simple circuit that, once activated, transmits / reflects a signal that at least encodes the passive radio's ID and / or other information.

[0037] Reader: A device that listens for and detects passive radio signals or echo signals (or reflected backscattered signals) from AIoT devices. The reader and activator can be co-located or non-co-located. For example, the reader and activator can each be a function or entity provided at the UE, BS, gNB, network node, relay node, or other node or entity.

[0038] AIoT devices can exist in different types or categories of environments: Device A: A passive device that does not have energy storage (e.g., only backscattering); Device B: A passive device with energy storage, such as a battery, that can amplify the backscattered signal; and / or Device C: An active device with energy storage that can amplify the transmitted signal.

[0039] Therefore, AIoT devices can be passive devices (e.g., Class A AIoT devices or Class B AIoT devices) or active devices (e.g., Class C AIoT devices).

[0040] Different topologies of environmental IoT wireless systems or environmental wireless networks can exist, such as Figures 2-4 As shown in the example.

[0041] Figure 2 This is a diagram illustrating an AIoT wireless system according to an example embodiment. Figure 2The illustrated AIoT wireless system includes a reader 204A provided on a BS (or gNB or other network node) 210, an activator 202A provided on an auxiliary node 212, and an environmental IoT device 206. The auxiliary node 212 can be a BS, gNB, relay node, UE (or user equipment), or other node or device. The activator 202A on the auxiliary node 212 can transmit an activation signal 230 received by the AIoT device 206. The AIoT device 206 can receive and / or detect the activation signal 230 from the activator 202A (which activates the AIoT device 206) and transmit a response signal 232 (e.g., backscatter reflection) received by the reader 204A of the BS 210. For example, the AIoT device 206 may include a backscatter transmitter, and the reader (e.g., reader 204A, 204B) may include a backscatter receiver. The backscatter transmitter can be configured to reflect incoming signals from an RF (or wireless signal) source through impedance mismatch. For example, this can be achieved by alternately changing the antenna impedance to switch between an absorption state and a reflection state via load modulation, which results in the envelope of the reflected signal having different amplitude levels. This allows the backscatter transmitter to modulate information bits onto the reflected signal. A backscatter receiver (e.g., which can be provided at reader 204A) can interpret the absorption state and the reflection state as modulation of different information bits. During reflection operation, the backscatter transmitter can change the amplitude and / or phase of the incoming signal, for example, to modulate information onto the reflected backscatter signal.

[0042] Figure 3 This is a diagram illustrating an AIoT wireless system according to another example embodiment. Figure 3 The AIoT wireless system is similar to Figure 2 However, Figure 3 In this configuration, activator 202B is provided on BS 210, and reader 204B is provided on auxiliary node 212. Therefore, Figure 3 The AIoT wireless system shown includes a reader 204B provided on (or operating thereon) an auxiliary node 212, an activator 202B provided on (or operating thereon) a BS 210, and an environmental IoT device 206. The auxiliary node 212 can be a BS, gNB, relay node, UE (or user equipment), or other node or device. The activator 202B on the BS 210 can send an activation signal 240 received by the AIoT device 206. The AIoT device 206 can receive and / or detect the activation signal from the activator 202B and send a response signal 242 (e.g., backscatter reflection) received by the reader 204B of the auxiliary node 212.

[0043] Figure 4This is a diagram illustrating an AIoT wireless system according to yet another example embodiment. (See diagram for example.) Figure 4 As shown, UE 410 may include an activator and a reader. Therefore, in Figure 4 In this configuration, the activator of UE 410 can send an activation signal 240 to the AIoT device 412. The AIoT device 412 can receive the activation signal and send a response signal 242 received by the reader of UE 410.

[0044] As illustrative examples, various example embodiments can be applied to a wide variety of different network environments or AIoT wireless systems or networks, including... Figures 2 to 4 Those shown.

[0045] Furthermore, according to example embodiments, a Session Control Unit (SCU) can be provided to manage and / or control (e.g., including configuration and / or reconfiguration) AIoT activation and reading sessions. The SCU can be provided on a BS, gNB, core network entity or node, a node in the cloud, a UE or user equipment, or other nodes or entities within the network. Additionally, for example, the SCU can co-located with a reader or activator. Activating and reading sessions can include one or more instances of: transmitting an activation signal via an activator, transmitting a response signal via an AIoT device based on the received activation signal, and receiving the response signal via a reader. The SCU can configure or pair the activator and reader for activating the session by configuring a time-frequency resource group (used for transmitting the activation signal (via the activator) and receiving the response signal (via the reader)). In the case of passive AIoT devices, the SCU can configure a set of time-frequency resources for transmitting the activation signal and (e.g., reflected backscattered signals) the response signal. In the case of active AIoT devices, the SCU can configure a first set of time-frequency resources for the activator to send an activation signal, and a second set of time-frequency resources for receiving a response signal (via the reader). This is because active devices can actively amplify the response signal and send it on time-frequency resources other than those used to receive the activation signal, or use those other time-frequency resources to send the response signal. The SCU can configure or reconfigure the activator and / or reader, and / or configure and / or reconfigure the activation and reading sessions by, for example, changing the activator and / or reader used for the activation session, and / or changing the time-frequency resources used for the activation and reading sessions, or making other changes.

[0046] For example, an AIoT system can include AIoT activators, AIoT readers, and AIoT devices. In a topology called a single-station topology, the AIoT activator and reader are the same network element (or device). This means that for Class A and Class B AIoT devices (whose responses are backscattered transmissions), the network element (or device) acting as the AIoT activator and reader can operate in full-duplex mode, capable of sending activation signals while simultaneously receiving responses from the AIoT devices. Conversely, in a topology called a two-station (or multi-station) topology, the AIoT activator and AIoT reader are two different network elements (or devices), and therefore full-duplex operation is no longer required in the AIoT activator and reader devices.

[0047] However, a challenge associated with a two-station topology is that the activator and reader may need to coordinate (e.g., agree on at least the time and frequency resources for sending activation signals to AIoT devices, and the associated reception of response signals at the reader), and frequently monitor whether this coordination remains up-to-date. Furthermore, monitoring the status of activation and reading sessions in AIoT systems can be challenging because it cannot be expected that the AIoT devices themselves monitor any link parameters and provide that information.

[0048] Therefore, establishing (e.g., periodic or non-periodic) activation and read sessions can be challenging because the session control unit (SCU) or entity (e.g., which may be provided at the network or UE) ideally needs to determine or anticipate whether the activator and reader pair will still be (or remain) effective from one read to the next (e.g., whether these devices are still close enough to the AIoT device, or whether their propagation conditions to the AIoT device still allow for proper activation / reading). If not, this triggers or causes a reconfiguration of subsequent read attempts (e.g., changing the activation and read session to another reader and / or activator) to ensure seamless reading. For example, various changes can occur over time: environmental conditions altering propagation conditions, movement of the activator and / or reader, conflicts at the UE (which may include a reader or activator) that could prevent the UE from sending activation signals and / or receiving response signals, or other changes. Therefore, reconfiguring the AIoT activation and read session can be useful, for example, when some conditions change.

[0049] Therefore, according to the example embodiment, the SCU can provide configuration to the reader and / or activator, such as configuration of time-frequency resources for sending activation signals and / or receiving response signals from AIoT devices. Additionally, the configuration provided by the SCU to the reader and / or activator may include or indicate one or more trigger conditions that, if satisfied or realized, will cause the reader or activator to send a reconfiguration trigger signal to the SCU, causing the SCU to perform a reconfiguration of the AIoT activation and reading session (e.g., changing the reader or activator, and / or changing the time-frequency resources of the activation and reading session). Furthermore, the reconfiguration trigger signal sent by the reader or activator to the SCU (e.g., when one of the trigger conditions monitored by the activator or reader is satisfied or realized) may also include a trigger reason (e.g., providing information about the reconfiguration reason, such as an indication of the trigger condition that has been satisfied or realized).

[0050] Therefore, some operations or functions that can be performed at various entities in an AIoT network or wireless system may include, for example: At the Session Control Unit (SCU): 1) Determine and send (to the reader and activator) the configuration of time-frequency resources for activation (i.e., for sending activation signals) and reading (i.e., for sending AIoT response signals), including determining and sending the configuration of AIoT reconfiguration trigger conditions, which, when the AIoT reconfiguration trigger conditions are met or realized, will cause the reader or activator to send a reconfiguration trigger signal to the SCU; 2) Receive reconfiguration trigger signals from the reader or activator via the SCU, for example, if the performance of the activator / reader pair is insufficient to cause the trigger conditions to be met; 3) Reconfigure one or more aspects of the activation and reading session (e.g., the SCU sends configuration or reconfiguration to the reader and activator), such as changes to the reader (e.g., from reader 1 to reader 2), changes to the activator (e.g., from the current activator 1 to a new activator 2), and / or indicate new or adjusted time-frequency resources for sending activation signals and / or for receiving response signals.

[0051] At the reader: 1) Receive configuration from the SCU, including configuration of time-frequency resources for sending activation signals and / or receiving response signals, and configuration of AIoT reconfiguration trigger conditions, which, when the AIoT reconfiguration trigger conditions are met or realized, will cause the reader or activator to send a reconfiguration trigger signal to the SCU to reconfigure the AIoT activation and reading session; 2) Receive response signals (e.g., which may be reflected backscattered signals) sent by the AIoT device in response to the activation signal; 3) Evaluate different AIoT trigger conditions to determine whether one or more of these trigger conditions have been met or realized; 4) If one or more trigger conditions have been met, send a reconfiguration trigger signal and (optionally) a trigger reason to the SCU; 5) Furthermore, in the case that multiple trigger conditions are met, determine which trigger reason to indicate.

[0052] At the activator: 1) Send an activation signal; 2) Receive configuration from the SCU, including the configuration of time-frequency resources for sending the activation signal and / or for receiving response signals, and the configuration of AIoT reconfiguration trigger conditions, which, when the AIoT reconfiguration trigger conditions are met or realized, will cause the reader or activator to send a reconfiguration trigger signal to the SCU to reconfigure the AIoT activation and reading session; 3) Evaluate different AIoT trigger conditions to determine whether one or more of these trigger conditions have been met or realized; 4) If one or more trigger conditions have been met, send a reconfiguration trigger signal and (optionally) a trigger reason to the SCU; 5) In addition, if multiple trigger conditions are met, determine which trigger reason to indicate.

[0053] Figure 5 This is a diagram illustrating the operation of a reader in an AIoT wireless system according to an example embodiment. Operation 510 includes: receiving configuration via the reader in an Ambient Internet of Things (AIoT) wireless system, the AIoT wireless system including an AIoT device, a reader, and an activator, the configuration including time-frequency resources for reading a response signal sent by the AIoT device in response to an activation signal sent by the activator, and trigger conditions for causing the reader to send a reconfiguration trigger signal to a session control unit. Operation 520 includes: evaluating the trigger conditions via the reader to determine that at least one of the trigger conditions has been met or achieved. And, operation 530 includes: sending a reconfiguration trigger signal via the reader to the session control unit to cause AIoT activation and reconfiguration of the reading session, wherein the reconfiguration trigger signal includes a trigger reason based on at least one of the trigger conditions being met or achieved.

[0054] Figure 5The method may further include: receiving a response signal in response to an activation signal from an AIoT device via a reader, wherein the response signal is at least one of the following: an ambient backscattered signal based on the activation signal, or an active transmission signal received from the AIoT device in response to the activation signal.

[0055] about Figure 5 The triggering reason may include information indicating that at least one triggering condition has been met or achieved.

[0056] about Figure 5 The method, wherein the triggering conditions for the reader to send a reconfiguration trigger signal to the session control unit include at least one of the following: the power or amplitude of the activation signal of the AIoT activation and reading session is less than a threshold; the power or amplitude of the response signal received by the reader from the AIoT device is less than a threshold; the reader detects that no response signal has been received from the AIoT device or detects a missing response signal from the AIoT device; the reader detects that no activation signal has been received from the activator or detects a missing activation signal from the activator; the power or amplitude difference between two time-continuous activation signals is greater than a threshold; the power or amplitude difference between two time-continuous AIoT device response signals is greater than a threshold; the received response signal... The following trigger conditions are considered: loss or absence of backscatter modulation of the response signal with power or amplitude exceeding a threshold; detection of Doppler shift or change in Doppler shift in the activation signal, indicating relative motion between the reader and the activator; detection of changes in the arrival time and / or direction of the response signal relative to the activation signal, respectively, exceeding a threshold; the number of trigger events or instances of the implemented trigger condition exceeding a threshold; the number of trigger events or instances of the same type of trigger condition exceeding a threshold; the number of trigger events or instances of the implemented trigger condition exceeding a threshold while the timer is still running and has not expired; or the number of trigger events or instances of the same type of trigger condition exceeding a threshold while the timer is still running and has not expired.

[0057] about Figure 5 The method, in which the reader evaluates the triggering conditions, may include: determining the priority of each of a plurality of triggering conditions that have been met or realized; and selecting the triggering condition with the highest priority; wherein sending a reconfiguration trigger signal to the session control unit via the reader includes: sending a reconfiguration trigger signal that includes a triggering reason based on or indicating the selected triggering condition.

[0058] Figure 6This is a flowchart illustrating the operation of an activator in an AIoT wireless system according to an example embodiment. Operation 610 includes receiving configuration via the activator in an Ambient Internet of Things (AIoT) wireless system, the AIoT wireless system including an AIoT device, a reader, and the activator, the configuration including time-frequency resources for transmitting an activation signal, and trigger conditions for causing the activator to send a reconfiguration trigger signal to a session control unit. Operation 620 includes evaluating the trigger conditions via the activator to determine that at least one of the trigger conditions has been met or achieved. Furthermore, operation 630 includes sending a reconfiguration trigger signal via the activator to the session control unit to cause reconfiguration of the AIoT activation and reading session, wherein the reconfiguration trigger signal includes a trigger reason based on at least one of the trigger conditions being met or achieved.

[0059] about Figure 6 The triggering conditions that cause the reader to send a reconfiguration trigger signal to the session control unit include at least one of the following: the activator is unable to send an activation signal at the minimum power level required to activate the AIoT device; the activator is unable to send an activation signal at the minimum power level required to activate the AIoT device due to an intra-device coexistence problem; the activator is unable to send an activation signal on the time-frequency resource indicated in the configuration; the activator is unable to send an activation signal on the time-frequency resource indicated in the configuration due to an intra-device coexistence problem; or the activator is outside the range of the session control unit.

[0060] Figure 7 This is a flowchart illustrating the operation of a session control unit (SCU) in an AIoT wireless system according to an example embodiment. Operation 710 includes: transmitting configuration via the session control unit in the AIoT wireless system, which includes AIoT devices, readers, and activators. The configuration includes time-frequency resources for transmitting at least one of an activation signal and a response signal, and trigger conditions that cause at least one of the activators and readers to transmit a reconfiguration trigger signal if at least one of the trigger conditions is met or achieved. Operation 720 includes: receiving a reconfiguration trigger signal from at least one of the activators and readers via the session control unit. The reconfiguration trigger signal includes a trigger reason based on at least one of the trigger conditions being met or achieved. Furthermore, operation 730 includes: performing a reconfiguration of the AIoT activation and reading session via the session control unit based on the reconfiguration trigger signal.

[0061] about Figure 7The method of sending configuration may include: sending configuration through a session control unit for an Ambient Internet of Things (AIoT) wireless system, the AIoT wireless system including AIoT devices, readers, and activators, the configuration including time-frequency resources for at least one of the following: the activator sending an activation signal, and the reader reading a response signal sent by the AIoT device in response to the activation signal.

[0062] about Figure 7 The triggering reason may include information indicating that at least one triggering condition has been met or achieved.

[0063] about Figure 7 The method, in which the session control unit performs reconfiguration of the AIoT activation and reading session based on the reconfiguration trigger signal, includes at least one of the following: changing the time-frequency resources used to send activation signals and / or send response signals; changing one or more frequencies of the time-frequency resources used to send activation signals and / or send response signals; increasing the time of the time-frequency resources used to send activation signals and / or send response signals; changing the activator used for the AIoT activation and reading session to a different activator; or changing the reader used for the AIoT activation and reading session to a different reader.

[0064] Figure 8 This is a diagram of an AIoT wireless system or network according to an example embodiment, in which a reader sends a reconfiguration trigger signal to the SCU.

[0065] Step 0: The Session Control Unit (SCU) is triggered (e.g., from an AIoT-related application) to configure the AIoT activation and read session, where the session consists of multiple activation and read rounds. As part of this step, the Session Control Unit determines: a) Which resources are used for activating and reading the session. In the case of a Class A or Class B (passive) AIoT device, the expected response from the AIoT device is a backscatter transmission; therefore, the activation and reading resources can be the same resources, can overlap, or can roughly coincide in time and frequency. For example, for passive (Class A or Class B) AIoT devices, at the time slot level, the same time-frequency resources can be used for transmitting activation and response signals. However, at the symbol or sub-symbol level, the resources used for the received activation signal and the backscatter signal may differ. For example, there may be processing time associated with receiving the activation signal and then initiating the backscatter transmission (therefore, for example, the transmission of the response signal may be delayed compared to the reception of the activation signal). In the case of a Class C AIoT device, the activation resource may precede the reading resource in time; and b) Resource reconfiguration triggering conditions for the reader (may include one or more of the following): These conditions may vary at least based on the AIoT device type: The triggering condition that causes the reader to send a reconfiguration trigger signal to the session control unit may include at least one of the following: The power or amplitude of the activation signal of the AIoT activation and reading session is less than a threshold; The power or amplitude of the response signal received by the reader from the AIoT device is less than a threshold; The reader detects that no response signal has been received from the AIoT device or detects a missing response signal from the AIoT device; The reader detects that no activation signal has been received from the activator or detects a missing activation signal from the activator; The power or amplitude difference between two time-continuous activation signals is greater than a threshold; Two time-continuous AIo The power or amplitude difference between the response signals from device T is greater than a threshold; the backscatter modulation of the received response signal with a power or amplitude greater than the threshold is lost or missing; a Doppler shift or change in the Doppler shift is detected in the activation signal, indicating relative motion between the reader and the activator; a change in the arrival time and / or direction of the response signal relative to the time and / or direction of the activation signal is detected to exceed a threshold; the number of trigger events or instances of the implemented trigger condition is greater than a threshold; the number of trigger events or instances of the same type of trigger condition is greater than a threshold; the number of trigger events or instances of the implemented trigger condition is greater than a threshold while the timer is still running and has not expired; or the number of trigger events or instances of the same type of trigger condition is greater than a threshold while the timer is still running and has not expired.

[0066] Step 1 (SCU -> Activator): The configuration of resources for activating the AIoT device is provided to the activator. Note that the reader can also receive this information after it has been sent to the activator node; that is, both the activator and the reader are intended receivers of the information sent by the SCU.

[0067] Step 2 (SCU -> Reader) is used to read the resource configuration returned by the AIoT device. Note that for Class A and Class B AIoT devices (passive AIoT devices), activating and reading resources are consistent in time and frequency, while for Class C AIoT devices (active AIoT devices), activating and reading resources can differ in frequency and time.

[0068] Step 3 (Activator -> AIoT Device) sends an activation signal in the resource configured for sending the activation signal.

[0069] Step 4 (AIoT Device -> Reader): After receiving the activation signal, the AIoT device sends its response signal. In the case of Class A or Class B AIoT devices, the transmission is via a backscattered signal and occurs in the same time and frequency resources as the activation signal. In the case of Class C AIoT devices, the transmission is via an active signal (i.e., non-backscattered), and therefore it can occur in resources configured for this purpose.

[0070] Step 5 (Reader) The reader checks whether any reconfiguration trigger conditions described in Step 0 are met.

[0071] Step 6 (Activator -> AIoT Device) sends an activation signal in the resource configured for sending the activation signal.

[0072] Step 7 (AIoT Device -> Reader): After receiving the activation signal, the AIoT device performs its transmission (sends a response signal). In the case of Class A or Class B AIoT devices, the transmission (response signal) is via a backscattered signal and occurs in the same time and frequency resources as the transmission of the activation signal. In the case of Class C AIoT devices, the transmission (response signal) is via an active signal (i.e., non-backscattered), and therefore it can occur in resources configured for this purpose.

[0073] Step 8 (Reader) The reader checks whether any reconfiguration trigger conditions described in Step 0 are met. In this example, the AIoT device response was not received, therefore a reconfiguration trigger will be initiated, and the reason for the trigger can be determined based on prioritization. In this case, the reason is the missing AIoT device response.

[0074] Step 9 (Reader -> SCU): The reader sends a reconfiguration trigger signal and may include the determined trigger reason.

[0075] (SCU): Upon receiving a reconfiguration trigger signal, the SCU initiates a reconfiguration of the AIoT activation and read session (i.e., performs step 0 again) and may consider another activator and reader pair (e.g., may change one or both of the activator or reader), and / or may optionally change the time-frequency resources used for transmitting activation and response signals depending on the reason for the reconfiguration trigger.

[0076] Figure 9 This is a diagram of an AIoT wireless system or network according to an example embodiment, wherein the activator sends a reconfiguration trigger signal to the SCU.

[0077] Step 0) (SCU) The Session Control Unit (SCU) (e.g., from an AIoT-related application) is triggered to configure the AIoT activation and read session, where the session may consist of multiple activation and read cycles. As part of this step, the Session Control Unit determines: a) Which resources are used for activating and reading sessions. When the AIoT device is a Class A or Class B AIoT device, the expected response from the AIoT device is a backscatter transmission, therefore activation and reading resources are synchronized in time and frequency. However, when the AIoT device is a Class C AIoT device, activation resources can precede reading resources in time.

[0078] b) Resource reconfiguration triggering conditions for the activator: The triggering conditions that cause the reader to send a reconfiguration trigger signal to the session control unit include at least one of the following: the activator is unable to send an activation signal at the minimum power level required to activate the AIoT device; the activator is unable to send an activation signal at the minimum power level required to activate the AIoT device due to an intra-device coexistence problem; the activator is unable to send an activation signal on the time-frequency resource specified in the configuration; the activator is unable to send an activation signal on the time-frequency resource specified in the configuration due to an intra-device coexistence problem; or the activator is outside the range of the session control unit.

[0079] Step 1 (SCU -> Activator): The configuration of resources for activating the AIoT device, along with the associated reconfiguration trigger conditions, is provided to the activator. Note that the reader can also receive this information after it has been sent to the activator; that is, both the activator and the reader are intended receivers of the information sent by the SCU.

[0080] Step 2 (SCU -> Reader) is used to read the resource configuration returned by the AIoT device. Note that for Class A and Class B AIoT devices, activating and reading resources are consistent in time and frequency, while for Class C AIoT devices, the activation and reading of resources can differ in both frequency and time.

[0081] Step 3 (Activator -> IoT Device) sends an activation signal in the resource configured for sending the activation signal.

[0082] Step 4 (AIoT Device -> Reader): After receiving the activation signal, the AIoT device performs its transmission (sends a response signal). In the case of Class A or Class B AIoT devices, the transmission (response signal) is via a backscattered signal and occurs in the same time and frequency resources as the transmission of the activation signal. In the case of Class C AIoT devices, the transmission (response signal) is via an active signal (i.e., non-backscattered), and therefore it can occur in resources configured for this purpose.

[0083] Step 5 (Activator) The reader checks whether any of the reconfiguration trigger conditions described in Step 0 are met; and in this example, at least one reconfiguration trigger condition is met.

[0084] Step 6 (Activator -> SCU) The activator sends a reconfiguration trigger signal, which may include the determined trigger reason.

[0085] Step 7 (SCU): After receiving the reconfiguration trigger signal, the SCU initiates the reconfiguration of the AIoT activation and read session (i.e., executes step 0 again), and may consider another activator and reader pair, and / or changes to the resources of the activation and read session.

[0086] In another embodiment, it can be combined Figure 8 and 9 The process described herein, and the SCU configuration reader and activator to check the reconfiguration trigger conditions. Specifically, the message can be defined through the following illustrative example: (SCU -> Reader) is used to read the resource configuration replied by the AIoT device - this corresponds to Figure 8 Step 2.

[0087] (SCU->Activator) The resource configuration for activating AIoT devices is provided to the activator node and the associated reconfiguration trigger conditions - this corresponds to Figure 9 Step 1.

[0088] Once configured, the activator and reader will perform their respective monitoring; once a condition is detected, they will reply to the SCU indicating the reason.

[0089] In another embodiment, execution Figure 9 The activator of the process described herein will send a reconfiguration trigger signal to the SCU after executing step 5, and will also send: (Activator -> Reader): A monitoring deactivation flag is sent to the reader via UE-to-UE SL communication (if SL communication is enabled between devices) or via other communication. This flag temporarily disables the reader's read / receive function. Therefore, in response to receiving this monitoring deactivation flag, the reader temporarily suspends or stops receiving response signals from the AIoT device.

[0090] In another embodiment, the SCU requests the activator and / or reader to measure and report the measurement results. The SCU then performs a reconfiguration evaluation based on a local trigger condition threshold and executes the reconfiguration based on the evaluation results. The activator or reader measures the backscattered (or reflected) signals and reports these backscattered / reflected or reflected signal measurement results, and the SCU makes a decision.

[0091] Here are some examples: Example 1. An apparatus comprising: at least one processor; and at least one memory storing instructions that, when executed by the at least one processor, cause the apparatus to at least: receive configuration via a reader in an Ambient Internet of Things (AIoT) wireless system, the AIoT wireless system including an AIoT device, a reader, and an activator, the configuration including time-frequency resources for reading a response signal sent by the AIoT device in response to an activation signal sent by the activator, and trigger conditions for causing the reader to send a reconfiguration trigger signal to a session control unit; evaluate the trigger conditions via the reader to determine that at least one of the trigger conditions has been satisfied or achieved; and send the reconfiguration trigger signal via the reader to the session control unit to cause AIoT activation and read session reconfiguration, wherein the reconfiguration trigger signal includes a trigger reason based on at least one of the trigger conditions being satisfied or achieved.

[0092] Example 2. According to the apparatus of Example 1, the apparatus is further configured to: receive a response signal in response to an activation signal from an AIoT device via a reader, wherein the response signal is at least one of the following: an ambient backscattered signal based on the activation signal, or an active transmission signal received from the AIoT device in response to the activation signal.

[0093] Example 3. An apparatus according to any one of Examples 1 to 2, wherein the triggering cause includes information indicating that at least one triggering condition has been met or realized.

[0094] Example 4. The apparatus according to any one of Examples 1 to 3, wherein the triggering condition causing the reader to send a reconfiguration trigger signal to the session control unit includes at least one of the following: the power or amplitude of the activation signal for AIoT activation and reading the session is less than a threshold; the power or amplitude of the response signal received by the reader from the AIoT device relative to the carrier of the activation signal is less than a threshold; the reader detects that no response signal has been received from the AIoT device or detects a missing response signal from the AIoT device; the reader detects that no activation signal has been received from the activator or detects a missing activation signal from the activator; the power or amplitude difference between two time-continuous activation signals is greater than a threshold; the power or amplitude difference between two time-continuous AIoT device response signals is greater than a threshold. The following conditions are considered trigger conditions: amplitude difference greater than a threshold; loss or absence of backscatter modulation of the received power or amplitude of the response signal greater than a threshold; detection of Doppler shift or change in Doppler shift in the activation signal, indicating relative motion between the reader and the activator; detection of changes in the arrival time and / or direction of the response signal relative to the time and / or direction of the activation signal exceeding a threshold; the number of trigger events or instances of the implemented trigger condition greater than a threshold; the number of trigger events or instances of the same type of trigger condition greater than a threshold; the number of trigger events or instances of the implemented trigger condition greater than a threshold while the timer is still running and has not expired; or the number of trigger events or instances of the same type of trigger condition greater than a threshold while the timer is still running and has not expired.

[0095] Example 5. An apparatus according to any one of Examples 1 to 4, wherein causing the apparatus to evaluate trigger conditions via a reader includes causing the apparatus to: determine the priority of each of a plurality of trigger conditions that have been satisfied or realized; and select the trigger condition with the highest priority; wherein causing the apparatus to send a reconfiguration trigger signal to the session control unit via the reader includes: causing the apparatus to send a reconfiguration trigger signal that includes a triggering reason based on or indicating the selected trigger condition.

[0096] Example 6. A method comprising: receiving configuration via a reader in an Ambient Internet of Things (AIoT) wireless system, the AIoT wireless system including an AIoT device, a reader, and an activator, the configuration including time-frequency resources for reading a response signal sent by the AIoT device in response to an activation signal sent by the activator, and triggering conditions for causing the reader to send a reconfiguration trigger signal to a session control unit; evaluating the triggering conditions via the reader to determine that at least one of the triggering conditions has been satisfied or achieved; and sending the reconfiguration trigger signal to the session control unit via the reader to cause AIoT activation and reconfiguration of a reading session, wherein the reconfiguration trigger signal includes a triggering reason based on at least one of the triggering conditions being satisfied or achieved.

[0097] Example 7. The method according to Example 6 further includes: receiving a response signal in response to an activation signal from an AIoT device via a reader, wherein the response signal is at least one of the following: an ambient backscattered signal based on the activation signal, or an active transmission signal received from the AIoT device in response to the activation signal.

[0098] Example 8. The method according to any one of Examples 6 to 7, wherein the triggering cause includes information indicating at least one triggering condition that has been met or achieved.

[0099] Example 9. The method according to any one of Examples 6 to 8, wherein the triggering condition causing the reader to send a reconfiguration trigger signal to the session control unit includes at least one of the following: the power or amplitude of the activation signal of the AIoT activation and reading session is less than a threshold; the power or amplitude of the reply signal received by the reader from the AIoT device relative to the carrier of the activation signal is less than a threshold; the reader detects that no reply signal has been received from the AIoT device or detects a missing reply signal from the AIoT device; the reader detects that no activation signal has been received from the activator or detects a missing activation signal from the activator; the power or amplitude difference between two time-continuous activation signals is greater than a threshold; the power difference between two time-continuous AIoT device reply signals is greater than a threshold. The following events may occur: The amplitude difference is greater than a threshold; the received power or amplitude of the response signal is greater than a threshold; backscatter modulation is lost or missing; Doppler shift or a change in Doppler shift is detected in the activation signal, indicating relative motion between the reader and the activator; the arrival time and / or direction of the response signal are detected to change more than a threshold relative to the time and / or direction of the activation signal, respectively; the number of trigger events or instances of the implemented trigger condition is greater than a threshold; the number of trigger events or instances of the same type of trigger condition is greater than a threshold; the number of trigger events or instances of the implemented trigger condition is greater than a threshold while the timer is still running and has not expired; or the number of trigger events or instances of the same type of trigger condition is greater than a threshold while the timer is still running and has not expired.

[0100] Example 10. The method according to any one of Examples 6 to 9, wherein evaluating the triggering condition via the reader includes: determining the priority of each of a plurality of triggering conditions that are met or realized; and selecting the triggering condition with the highest priority; wherein sending a reconfiguration trigger signal to the session control unit via the reader includes: sending a reconfiguration trigger signal that includes a triggering reason based on or indicating the selected triggering condition.

[0101] Example 11. An apparatus comprising: components for receiving configuration via a reader in an Ambient Internet of Things (AIoT) wireless system, the AIoT wireless system including an AIoT device, a reader, and an activator, the configuration including time-frequency resources for reading a response signal sent by the AIoT device in response to an activation signal sent by the activator, and trigger conditions for causing the reader to send a reconfiguration trigger signal to a session control unit; components for evaluating the trigger conditions via the reader to determine that at least one of the trigger conditions has been met or achieved; and components for sending the reconfiguration trigger signal via the reader to the session control unit to cause AIoT activation and read session reconfiguration, wherein the reconfiguration trigger signal includes a trigger reason based on at least one of the trigger conditions being met or achieved.

[0102] Example 12. An apparatus comprising: at least one processor; and at least one memory storing instructions that, when executed by the at least one processor, cause the apparatus to at least: receive configuration via an activator in an Ambient Internet of Things (AIoT) wireless system, the AIoT wireless system including an AIoT device, a reader, and an activator, the configuration including time-frequency resources for transmitting an activation signal, and trigger conditions for causing the activator to transmit a reconfiguration trigger signal to a session control unit; evaluate the trigger conditions via the activator to determine that at least one of the trigger conditions has been satisfied or achieved; and transmit the reconfiguration trigger signal via the activator to the session control unit to cause reconfiguration of the AIoT activation and reading session, wherein the reconfiguration trigger signal includes a trigger cause based on at least one of the trigger conditions being satisfied or achieved.

[0103] Example 13. The apparatus according to Example 12, wherein the triggering condition that causes the reader to send a reconfiguration trigger signal to the session control unit includes at least one of the following: the activator is unable to send an activation signal at the minimum power level required to activate the AIoT device; the activator is unable to send an activation signal at the minimum power level required to activate the AIoT device due to an intra-device coexistence problem; the activator is unable to send an activation signal on the time-frequency resource indicated in the configuration; the activator is unable to send an activation signal on the time-frequency resource indicated in the configuration due to an intra-device coexistence problem; or the activator is outside the range of the session control unit.

[0104] Example 14. A method comprising: receiving configuration via an activator in an Ambient Internet of Things (AIoT) wireless system, the AIoT wireless system including an AIoT device, a reader, and an activator, the configuration including time-frequency resources for transmitting an activation signal, and triggering conditions for causing the activator to transmit a reconfiguration trigger signal to a session control unit; evaluating the triggering conditions via the activator to determine that at least one of the triggering conditions has been satisfied or achieved; and transmitting the reconfiguration trigger signal via the activator to the session control unit to cause reconfiguration of an AIoT activation and reading session, wherein the reconfiguration trigger signal includes a triggering reason based on at least one of the triggering conditions being satisfied or achieved.

[0105] Example 15. The method according to Example 14, wherein the triggering condition that causes the reader to send a reconfiguration trigger signal to the session control unit includes at least one of the following: the activator is unable to send an activation signal at the minimum required power level to activate the AIoT device; the activator is unable to send an activation signal at the minimum required power level to activate the AIoT device due to an intra-device coexistence problem; the activator is unable to send an activation signal on the time-frequency resource indicated in the configuration; the activator is unable to send an activation signal on the time-frequency resource indicated in the configuration due to an intra-device coexistence problem; or the activator is outside the range of the session control unit.

[0106] Example 16. An apparatus comprising: components for receiving configuration via an activator in an Ambient Internet of Things (AIoT) wireless system, the AIoT wireless system including an AIoT device, a reader, and an activator, the configuration including time-frequency resources for transmitting an activation signal, and trigger conditions for causing the activator to transmit a reconfiguration trigger signal to a session control unit; components for evaluating the trigger conditions via the activator to determine that at least one of the trigger conditions has been met or achieved; and components for transmitting the reconfiguration trigger signal via the activator to the session control unit to cause reconfiguration of an AIoT activation and reading session, wherein the reconfiguration trigger signal includes a trigger reason based on at least one of the trigger conditions being met or achieved.

[0107] Example 17. An apparatus comprising: at least one processor; and at least one memory storing instructions that, when executed by the at least one processor, cause the apparatus to at least: transmit configuration via a session control unit in an Ambient Internet of Things (AIoT) wireless system, the AIoT wireless system including AIoT devices, readers, and activators, the configuration including time-frequency resources for transmitting at least one of activation signals and response signals, and trigger conditions that cause at least one of the activators and readers to transmit a reconfiguration trigger signal if at least one of the trigger conditions is met or achieved; receive the reconfiguration trigger signal from at least one of the activators and readers via the session control unit, the reconfiguration trigger signal including a trigger cause based on at least one of the trigger conditions that has been met or achieved; and perform reconfiguration of an AIoT activation and reading session via the session control unit based on the reconfiguration trigger signal.

[0108] Example 18. The apparatus according to Example 17, wherein causing the apparatus to send includes causing the apparatus to: send configuration via a session control unit for an Ambient Internet of Things (AIoT) wireless system, the AIoT wireless system including an AIoT device, a reader, and an activator, the configuration including time-frequency resources for at least one of: the activator sending an activation signal, and the reader reading a response signal sent by the AIoT device in response to the activation signal.

[0109] Example 19. An apparatus according to any one of Examples 17 to 18, wherein the triggering cause includes information indicating that at least one triggering condition has been met or realized.

[0110] Example 20. The apparatus according to any one of Examples 17 to 19, wherein causing the apparatus to perform reconfiguration of an AIoT activation and read session based on a reconfiguration trigger signal via a session control unit includes causing the apparatus to perform at least one of the following: changing the time-frequency resources used for transmitting activation signals and / or transmitting response signals; changing one or more frequencies of the time-frequency resources used for transmitting activation signals and / or transmitting response signals; Increase the time of time-frequency resources used to send activation signals and / or send response signals; change the activator used for AIoT activation and reading sessions to a different activator; or change the reader used for AIoT activation and reading sessions to a different reader.

[0111] Example 21. A method comprising: transmitting configuration via a session control unit in an Ambient Internet of Things (AIoT) wireless system, the AIoT wireless system including an AIoT device, a reader, and an activator, the configuration including time-frequency resources for transmitting at least one of an activation signal and a response signal, and triggering conditions that cause at least one of the activator and the reader to transmit a reconfiguration trigger signal if at least one of the triggering conditions is met or achieved; receiving the reconfiguration trigger signal from at least one of the activator and the reader via the session control unit, the reconfiguration trigger signal including a triggering reason based on at least one of the triggering conditions being met or achieved; and performing a reconfiguration of an AIoT activation and reading session via the session control unit based on the reconfiguration trigger signal.

[0112] Example 22. The method according to Example 21, wherein sending includes: sending the configuration through the session control unit for an Ambient Internet of Things (AIoT) wireless system, the AIoT wireless system including the AIoT device, the reader, and the activator, the configuration including time-frequency resources for at least one of: the activator sending the activation signal, and the reader reading the response signal sent by the AIoT device in response to the activation signal.

[0113] Example 23. The method according to any one of Examples 21-22, wherein the triggering cause includes information indicating at least one triggering condition that has been met or achieved.

[0114] Example 24. The method according to any one of Examples 21-23, wherein the session control unit performs reconfiguration of the AIoT activation and reading session based on the reconfiguration trigger signal, comprising at least one of the following: changing the time-frequency resources used to send activation signals and / or send response signals; changing one or more frequencies of the time-frequency resources used to send activation signals and / or send response signals; increasing the time of the time-frequency resources used to send activation signals and / or send response signals; changing the activator used for the AIoT activation and reading session to a different activator; or changing the reader used for the AIoT activation and reading session to a different reader.

[0115] Example 25. A computer-readable storage medium including instructions stored thereon, the instructions being configured, when executed by at least one processor, to cause a computing system to: receive configuration via a reader in an Ambient Internet of Things (AIoT) wireless system, the AIoT wireless system including an AIoT device, a reader, and an activator, the configuration including time-frequency resources for reading a response signal sent by the AIoT device in response to an activation signal sent by the activator, and trigger conditions for causing the reader to send a reconfiguration trigger signal to a session control unit; evaluate the trigger conditions via the reader to determine that at least one of the trigger conditions has been satisfied or achieved; and send the reconfiguration trigger signal via the reader to the session control unit to cause AIoT activation and reconfiguration of a reading session, wherein the reconfiguration trigger signal includes a trigger reason based on at least one of the trigger conditions being satisfied or achieved.

[0116] Example 26. A computer-readable storage medium including instructions stored thereon, the instructions being configured, when executed by at least one processor, to cause a computing system to: receive configuration via an activator in an Ambient Internet of Things (AIoT) wireless system, the AIoT wireless system including an AIoT device, a reader, and an activator, the configuration including time-frequency resources for transmitting an activation signal, and trigger conditions for causing the activator to transmit a reconfiguration trigger signal to a session control unit; evaluate the trigger conditions via the activator to determine that at least one of the trigger conditions has been satisfied or achieved; and transmit the reconfiguration trigger signal via the activator to the session control unit to cause a reconfiguration of the AIoT activation and reading session, wherein the reconfiguration trigger signal includes a trigger reason based on at least one of the trigger conditions being satisfied or achieved.

[0117] Example 27. A computer-readable storage medium including instructions stored thereon, the instructions being configured, when executed by at least one processor, to cause a computing system to: transmit a configuration via a session control unit in an Ambient Internet of Things (AIoT) wireless system, the AIoT wireless system including an AIoT device, a reader, and an activator, the configuration including time-frequency resources for transmitting at least one of an activation signal and a response signal, and triggering conditions that cause at least one of the activator and the reader to transmit a reconfiguration trigger signal if at least one of the triggering conditions is met or achieved; receive the reconfiguration trigger signal from at least one of the activator and the reader via the session control unit, the reconfiguration trigger signal including a triggering cause based on at least one of the triggering conditions being met or achieved; and perform a reconfiguration of an AIoT activation and reading session via the session control unit based on the reconfiguration trigger signal.

[0118] Figure 10This is a block diagram of a wireless station (e.g., an AP, BS, or user equipment / UE or other network node) 1500 according to an example embodiment. The wireless station 1500 may include, for example, one or more (e.g., such as...) Figure 10 The two RF (radio frequency) or wireless transceivers 1502A and 1502B shown include a transmitter for transmitting signals and a receiver for receiving signals. The wireless station also includes a processor or control unit / entity (controller) 1504 for executing instructions or software and controlling the transmission and reception of signals, and a memory 1506 for storing data and / or instructions.

[0119] Processor 1504 may also make decisions or determinations, generate frames, packets, or messages for transmission, decode received frames or messages for further processing, and perform other tasks or functions described herein. For example, processor 1504, which may be a baseband processor, may generate messages, packets, frames, or other signals for transmission via wireless transceiver 1502 (1502A or 1502B). Processor 1504 may control the transmission of signals or messages on a wireless network and may control the reception of signals or messages via a wireless network (e.g., after down-conversion by wireless transceiver 1502). Processor 1504 may be programmable and capable of executing software or other instructions stored in memory or other computer media to perform the various tasks and functions described above, such as one or more of the tasks or methods described above. Processor 1504 may be (or may include) hardware, programmable logic, a programmable processor executing software or firmware, and / or any combination of these. For example, using other terms, processor 1504 and transceiver 1502 together may be considered a wireless transmitter / receiver system.

[0120] In addition, refer to Figure 10 The controller (or processor) 1508 can execute software and instructions, and can provide overall control for station 1500, and can provide... Figure 10 Other systems, not shown, provide control, such as controlling input / output devices (e.g., a display, a keyboard), and / or can execute software for one or more applications that may be available on the wireless station 1500, such as, for example, an email program, an audio / video application, a word processor, a VoIP application, or other applications or software.

[0121] In addition, a storage medium may be provided that includes stored instructions, which, when executed by a controller or processor, can cause processor 1504 or other controllers or processors to perform one or more of the functions or tasks described above.

[0122] According to another example embodiment, the RF or wireless transceiver 1502A / 1502B can receive signals or data, and / or transmit or send signals or data. The processor 1504 (and possibly the transceiver 1502A / 1502B) can control the RF or wireless transceiver 1502A or 1502B to receive, transmit, broadcast, or transmit signals or data.

[0123] However, the embodiments are not limited to the system given as an example, but those skilled in the art can apply the solution to other communication systems. Another example of a suitable communication system is the 5G concept. It is assumed that the network architecture in 5G will be very similar to the network architecture of advanced LTE. 5G may use multiple-input multiple-output (MIMO) antennas. It will have far more base stations or nodes than LTE (the so-called small cell concept), including macro sites that cooperate with smaller stations, and may also employ various radio technologies to achieve better coverage and enhanced data rates.

[0124] It should be understood that future networks will most likely utilize Network Functions Virtualization (NFV), a network architecture concept that proposes virtualizing network node functions as "building blocks" or entities that can be operatively connected or linked together to provide services. Virtualized network functions (VNFs) can include one or more virtual machines running computer program code using standard or general-purpose type servers instead of custom hardware. Cloud computing or data storage may also be utilized. In radio communications, this could mean that node operations can be performed, at least partially, in servers, hosts, or nodes operatively coupled to a remote radio head. Node operations can also be distributed across multiple servers, nodes, or hosts. It should also be understood that the workforce distribution between core network operations and base station operations may differ from, or even not exist, the workforce distribution in LTE.

[0125] Embodiments of the various technologies described herein can be implemented in digital electronic circuits or in computer hardware, firmware, software, or combinations thereof. Embodiments can be implemented as computer program products, i.e., computer programs tangibly embodied in an information carrier (e.g., in a machine-readable storage device or in a propagating signal) for execution by or control of a data processing apparatus (e.g., a programmable processor, a computer, or multiple computers). Embodiments can also be provided on a computer-readable medium or a computer-readable storage medium, which may be a non-transitory medium. Embodiments of the various technologies may also include embodiments provided via transient signals or media, and / or program and / or software embodiments downloadable via the Internet or other networks (wired and / or wireless networks). Additionally, embodiments can be provided via machine-type communication (MTC) and also via the Internet of Things (IoT).

[0126] Computer programs can be in the form of source code, object code, or some intermediate form, and they can be stored on some kind of carrier, distribution medium, or computer-readable medium, which can be any entity or device capable of carrying the program. Such carriers include, for example, recording media, computer memory, read-only memory, optoelectronic and / or electrical carrier signals, telecommunication signals, and software distribution packages. Depending on the required processing power, a computer program can be executed in a single electronic digital computer or can be distributed across multiple computers.

[0127] Furthermore, embodiments of the various technologies described herein can utilize network-physical systems (CPS) (systems that control collaborative computing elements of physical entities). CPS embodiments can be implemented and utilize a large number of interconnected ICT devices (sensors, actuators, processors, microcontrollers, etc.) embedded in physical objects at different locations. Mobile network-physical systems, which are inherently mobile physical systems, are a subcategory of network-physical systems. Examples of mobile physical systems include mobile robots and electronic devices transported by humans or animals. The growing popularity of smartphones has increased interest in the field of mobile network-physical systems. Therefore, various embodiments of the technologies described herein can be provided via one or more of these technologies.

[0128] Computer programs (such as those described above) can be written in any programming language (including compiled or interpreted languages) and can be deployed in any form, including as standalone programs or as modules, components, subroutines, or other units or parts thereof adapted to a computing environment. Computer programs can be deployed to execute on one or more computers at a single site, or distributed across multiple sites and interconnected via a communication network.

[0129] The method steps can be executed by one or more programmable processors that execute a computer program or a portion thereof to perform a function by manipulating input data and generating output. The method steps can also be executed by special-purpose logic circuitry, and the apparatus can be implemented as special-purpose logic circuitry, such as an FPGA (Field-Programmable Gate Array) or an ASIC (Application-Specific Integrated Circuit).

[0130] For example, processors suitable for executing computer programs include general-purpose and special-purpose microprocessors, as well as any type of digital computer, chip, or chipset and any one or more processors. Typically, a processor receives instructions and data from read-only memory or random access memory, or both. Computer components may include at least one processor for executing instructions and one or more memory devices for storing instructions and data. Typically, a computer may also include, or be operatively coupled to, receiving data from or transferring data to, or both to, one or more mass storage devices (e.g., magnetic disks, magneto-optical disks, or optical disks) for storing data. Information carriers suitable for embodying computer program instructions and data include all forms of non-volatile memory, including, for example, semiconductor memory devices such as EPROM, EEPROM, and flash memory devices; magnetic disks, such as internal hard disks or removable disks; magneto-optical disks; and CD-ROM and DVD-ROM disks. Processors and memory may be supplemented by or incorporated into special-purpose logic circuitry.

[0131] To provide interaction with the user, the embodiments can be implemented on a computer having a display device for displaying information to the user, such as a cathode ray tube (CRT) or liquid crystal display (LCD) monitor, and a user interface through which the user can provide input to the computer, such as a keyboard and a pointing device, such as a mouse or trackball. Other types of devices can also be used to provide interaction with the user; for example, the feedback provided to the user can be any form of sensory feedback, such as visual feedback, auditory feedback, or tactile feedback; and input from the user can be received in any form, including acoustic, voice, or tactile input.

[0132] The embodiments can be implemented in a computing system that includes backend components (e.g., as a data server), or middleware components (e.g., an application server), or frontend components (e.g., a client computer having a graphical user interface or web browser through which a user can interact with the embodiments), or any combination of such backend, middleware, or frontend components. The components can be interconnected via digital data communication (e.g., a communication network) of any form or medium. Examples of communication networks include local area networks (LANs) and wide area networks (WANs), such as the Internet.

[0133] While certain features of the embodiments have been shown as described herein, many modifications, substitutions, alterations, and equivalents will now occur to those skilled in the art. Therefore, it should be understood that the appended claims are intended to cover all such modifications and variations falling within the true spirit of the various embodiments.

Claims

1. An apparatus comprising: at least one processor; and at least one memory storing instructions that, when executed by the at least one processor, cause the apparatus at least to: receive, by a reader in an ambient Internet of Things (AIoT) wireless system comprising an AIoT device, the reader, and an activator, a configuration comprising time-frequency resources for reading a reply signal transmitted by the AIoT device in response to an activation signal transmitted by the activator, and a trigger condition for causing the reader to transmit a reconfiguration trigger signal to a session control unit; evaluate, by the reader, the trigger condition to determine that at least one of the trigger conditions has been met or fulfilled; and transmit, by the reader, the reconfiguration trigger signal to the session control unit to cause reconfiguration of an AIoT activation and reading session, wherein the reconfiguration trigger signal comprises a trigger cause based on the at least one of the trigger conditions that has been met or fulfilled.

2. The apparatus according to claim 1, wherein the apparatus is further caused to: receive, by the reader, the reply signal from the AIoT device in response to the activation signal, wherein the reply signal is at least one of: an ambient backscatter signal based on the activation signal, or an actively transmitted signal received from the AIoT device in response to the activation signal.

3. The apparatus according to any one of claims 1 to 2, wherein the trigger cause comprises information indicating the at least one trigger condition that has been met or fulfilled.

4. The apparatus according to any one of claims 1 to 3, wherein the trigger condition that causes the reader to transmit a reconfiguration trigger signal to the session control unit comprises at least one of: a power or amplitude of the activation signal of the AIoT activation and reading session being less than a threshold value; a power or amplitude of the reply signal received by the reader from the AIoT device relative to a carrier of the activation signal being less than a threshold value; a detection, by the reader, that the reply signal from the AIoT device is not received or is missing; a detection, by the reader, that the activation signal from the activator is not received or is missing; a difference in power or amplitude between two time-continuously activation signals being greater than a threshold value; a difference in power or amplitude between two time-continuously AIoT device reply signals being greater than a threshold value; a loss or a missing of a backscatter modulation of the received reply signal having a received power or amplitude greater than a threshold value; a detection of a Doppler shift or a change in Doppler shift in the activation signal indicating a relative motion between the reader and the activator; a detection that a change in a time of arrival and / or direction of the reply signal relative to the time and / or direction of the activation signal, respectively, exceeds a threshold value; a number of trigger events or instances of the trigger condition that are fulfilled being greater than a threshold value; a number of the trigger events or instances of the same type of the trigger condition is greater than a threshold value; a number of the trigger events or instances of the trigger condition implemented is greater than a threshold value while a timer is still running and not expired; or a number of the trigger events or instances of the same type of the trigger condition is greater than a threshold value while a timer is still running and not expired.

5. The apparatus of any one of claims 1 to 4, wherein causing the apparatus to evaluate the trigger conditions by the reader comprises causing the apparatus to: determine a priority of each of a plurality of trigger conditions that have been satisfied or implemented; select a trigger condition having a highest priority; wherein causing the apparatus to send the reconfiguration trigger signal by the reader to the session control unit comprises causing the apparatus to send the reconfiguration trigger signal comprising the trigger cause based on or indicative of the selected trigger condition.

6. A method comprising: receiving, by a reader in an ambient Internet of Things (AIoT) wireless system comprising an AIoT device, the reader, and an activator, a configuration comprising time-frequency resources for reading a reply signal transmitted by the AIoT device in response to an activation signal transmitted by the activator, and a trigger condition for causing the reader to send a reconfiguration trigger signal to a session control unit; evaluating, by the reader, the trigger condition to determine that at least one of the trigger conditions has been satisfied or implemented; and sending, by the reader, the reconfiguration trigger signal to the session control unit to cause a reconfiguration of an AIoT activation and reading session, wherein the reconfiguration trigger signal comprises a trigger cause based on the at least one of the trigger conditions that has been satisfied or implemented.

7. The method of claim 6, further comprising: receiving, by the reader, the reply signal from the AIoT device in response to the activation signal, wherein the reply signal is at least one of: an ambient backscatter signal based on the activation signal, or an actively transmitted signal received from the AIoT device in response to the activation signal.

8. The method of any one of claims 6 to 7, wherein the trigger cause comprises information indicative of the at least one trigger condition that has been satisfied or implemented.

9. The method of any one of claims 6 to 8, wherein the trigger condition for causing the reader to send a reconfiguration trigger signal to the session control unit comprises at least one of: a power or amplitude of the activation signal of the AIoT activation and reading session is less than a threshold value; a power or amplitude of the reply signal received by the reader from the AIoT device relative to a carrier of the activation signal is less than a threshold value; detecting, by the reader, that the reply signal from the AIoT device is not received or is missing; detecting, by the reader, that the activation signal from the activator is not received or is missing; a power or amplitude difference between two time-successive activation signals is larger than a threshold value; a power or amplitude difference between two time-successive AIoT device reply signals is larger than a threshold value; a loss or absence of backscatter modulation of the received reply signal received power or amplitude larger than a threshold value; a Doppler shift or change in Doppler shift in the activation signal is detected, indicating a relative motion between the reader and the activator; a change in the time of arrival and / or direction of the reply signal relative to the time and / or direction of the activation signal, respectively, is detected to exceed a threshold value; a number of trigger events or instances of the trigger condition implemented is larger than a threshold value; a number of trigger events or instances of the same type of the trigger condition is larger than a threshold value; a number of trigger events or instances of the trigger condition implemented while a timer is still running and not expired is larger than a threshold value; or a number of trigger events or instances of the same type of the trigger condition while a timer is still running and not expired is larger than a threshold value.

10. The method of any one of claims 6 to 9, wherein evaluating, by the reader, the trigger condition comprises: determining a priority of each of a plurality of trigger conditions that have been satisfied or implemented; selecting a trigger condition with a highest priority; wherein sending, by the reader, the reconfiguration trigger signal to the session control unit comprises sending the reconfiguration trigger signal comprising the trigger cause based on or indicative of the selected trigger condition.

11. An apparatus comprising: means for receiving, by a reader in an Ambient Internet of Things (AIoT) wireless system, a configuration, the AIoT wireless system comprising an AIoT device, the reader, and an activator, the configuration comprising time-frequency resources for reading a reply signal transmitted by the AIoT device in response to an activation signal transmitted by the activator, and a trigger condition for causing the reader to send a reconfiguration trigger signal to a session control unit; means for evaluating, by the reader, the trigger condition to determine that at least one of the trigger conditions has been satisfied or implemented; and means for sending, by the reader, the reconfiguration trigger signal to the session control unit to cause a reconfiguration of an AIoT activation and reading session, wherein the reconfiguration trigger signal comprises a trigger cause based on the at least one of the trigger conditions that has been satisfied or implemented.

12. An apparatus comprising: at least one processor; and at least one memory storing instructions that, when executed by the at least one processor, cause the apparatus at least to: receive, by an activator in an Ambient Internet of Things (AIoT) wireless system, a configuration, the AIoT wireless system comprising an AIoT device, a reader, and the activator, the configuration comprising time-frequency resources for transmitting an activation signal, and a trigger condition for causing the activator to send a reconfiguration trigger signal to a session control unit; evaluate, by the activator, the trigger condition to determine that at least one of the trigger conditions has been satisfied or implemented; and sending, by the activator, the reconfiguration trigger signal to the session control unit to cause reconfiguration of an AIoT activation and reading session, wherein the reconfiguration trigger signal comprises a trigger cause based on the at least one of the trigger conditions that has been met or fulfilled.

13. The apparatus of claim 12, wherein the trigger condition that causes the reader to send a reconfiguration trigger signal to the session control unit comprises at least one of: the activator is unable to send the activation signal at a minimum required power level to activate the AIoT device; the activator is unable to send the activation signal at a minimum required power level to activate the AIoT device due to an in-device coexistence issue; the activator is unable to send the activation signal on the time-frequency resources indicated by the configuration; the activator is unable to send the activation signal on the time-frequency resources indicated by the configuration due to an in-device coexistence issue; or the activator is out of range of the session control unit.

14. A method comprising: receiving, by an activator in an Ambient Internet of Things (AIoT) wireless system, a configuration, the AIoT wireless system comprising an AIoT device, a reader, and the activator, the configuration comprising time-frequency resources for sending an activation signal, and a trigger condition for causing the activator to send a reconfiguration trigger signal to a session control unit; evaluating, by the activator, the trigger condition to determine that at least one of the trigger conditions has been met or fulfilled; and sending, by the activator, the reconfiguration trigger signal to the session control unit to cause reconfiguration of an AIoT activation and reading session, wherein the reconfiguration trigger signal comprises a trigger cause based on the at least one of the trigger conditions that has been met or fulfilled.

15. The method of claim 14, wherein the trigger condition that causes the reader to send a reconfiguration trigger signal to the session control unit comprises at least one of: the activator is unable to send the activation signal at a minimum required power level to activate the AIoT device; the activator is unable to send the activation signal at a minimum required power level to activate the AIoT device due to an in-device coexistence issue; the activator is unable to send the activation signal on the time-frequency resources indicated by the configuration; the activator is unable to send the activation signal on the time-frequency resources indicated by the configuration due to an in-device coexistence issue; or the activator is out of range of the session control unit.

16. An apparatus comprising: means for receiving, by an activator in an Ambient Internet of Things (AIoT) wireless system, a configuration, the AIoT wireless system comprising an AIoT device, a reader, and the activator, the configuration comprising time-frequency resources for sending an activation signal, and a trigger condition for causing the activator to send a reconfiguration trigger signal to a session control unit; means for evaluating, by the activator, the trigger condition to determine that at least one of the trigger conditions has been met or fulfilled; and a component for sending, by the activator, the reconfiguration trigger signal to the session control unit to cause reconfiguration of an AIoT activation and reading session, wherein the reconfiguration trigger signal comprises a trigger cause based on the at least one trigger condition that has been met or fulfilled among the trigger conditions.

17. An apparatus comprising: at least one processor; and at least one memory storing instructions that, when executed by the at least one processor, cause the apparatus at least to: send, by a session control unit in an Ambient Internet of Things (AIoT) wireless system comprising an AIoT device, a reader, and an activator, a configuration comprising time-frequency resources for transmission of at least one of an activation signal and a reply signal, and a trigger condition that causes at least one of the activator and the reader to send a reconfiguration trigger signal in a case where at least one trigger condition among the trigger conditions is met or fulfilled; receive, by the session control unit from at least one of the activator and the reader, the reconfiguration trigger signal comprising a trigger cause based on the at least one trigger condition that has been met or fulfilled among the trigger conditions; and perform, by the session control unit based on the reconfiguration trigger signal, reconfiguration of an AIoT activation and reading session.

18. The apparatus of claim 17, wherein causing the apparatus to send comprises causing the apparatus to: send, by the session control unit for an Ambient Internet of Things (AIoT) wireless system comprising the AIoT device, the reader, and the activator, the configuration comprising time-frequency resources for at least one of the activator to transmit the activation signal and the reader to read the reply signal transmitted by the AIoT device in response to the activation signal.

19. The apparatus of any one of claims 17 to 18, wherein the trigger cause comprises information indicating the at least one trigger condition that has been met or fulfilled.

20. The apparatus of any one of claims 17 to 19, wherein causing the apparatus to perform, by the session control unit based on the reconfiguration trigger signal, reconfiguration of an AIoT activation and reading session comprises causing the apparatus to perform at least one of: changing the time-frequency resources for transmitting the activation signal and / or transmitting the reply signal; changing one or more frequencies of the time-frequency resources for transmitting the activation signal and / or transmitting the reply signal; increasing a time of the time-frequency resources for transmitting the activation signal and / or transmitting the reply signal; changing the activator for the AIoT activation and reading session to a different activator; or changing the reader for the AIoT activation and reading session to a different reader.

21. A method comprising: sending, by a session control unit in an Ambient Internet of Things (AIoT) wireless system, a configuration, the AIoT wireless system comprising an AIoT device, a reader, and an activator, the configuration comprising time-frequency resources for transmission of at least one of an activation signal and a reply signal, and a trigger condition that causes at least one of the activator and the reader to transmit a reconfiguration trigger signal if at least one of the trigger conditions is satisfied or fulfilled; receiving, by the session control unit from at least one of the activator and the reader, the reconfiguration trigger signal, the reconfiguration trigger signal comprising a trigger cause based on the at least one of the trigger conditions that has been satisfied or fulfilled; and performing, by the session control unit based on the reconfiguration trigger signal, a reconfiguration of an AIoT activation and reading session.

22. The method of claim 21, wherein the sending comprises: sending, by the session control unit for an Ambient Internet of Things (AIoT) wireless system, a configuration, the AIoT wireless system comprising the AIoT device, the reader, and the activator, the configuration comprising time-frequency resources for at least one of the activator transmitting the activation signal and the reader reading the reply signal transmitted by the AIoT device in response to the activation signal.

23. The method of any one of claims 21 to 22, wherein the trigger cause comprises information indicating the at least one trigger condition that has been satisfied or fulfilled.

24. The method of any one of claims 21 to 23, wherein the performing, by the session control unit based on the reconfiguration trigger signal, a reconfiguration of the AIoT activation and reading session comprises at least one of: changing the time-frequency resources for transmitting the activation signal and / or transmitting the reply signal; changing one or more frequencies of the time-frequency resources for transmitting the activation signal and / or transmitting the reply signal; increasing a time of the time-frequency resources for transmitting the activation signal and / or transmitting the reply signal; changing the activator for the AIoT activation and reading session to a different activator; or changing the reader for the AIoT activation and reading session to a different reader.

25. An apparatus comprising: means for sending, by a session control unit in an Ambient Internet of Things (AIoT) wireless system, a configuration, the AIoT wireless system comprising an AIoT device, a reader, and an activator, the configuration comprising time-frequency resources for transmission of at least one of an activation signal and a reply signal, and a trigger condition that causes at least one of the activator and the reader to transmit a reconfiguration trigger signal if at least one of the trigger conditions is satisfied or fulfilled; ​ means for receiving, by the session control unit, the reconfiguration trigger signal from at least one of the activator and the reader, the reconfiguration trigger signal comprising a trigger cause based on the at least one trigger condition of the trigger conditions that has been satisfied or fulfilled; and means for performing, by the session control unit, reconfiguration of an AIoT activation and reading session based on the reconfiguration trigger signal.

26. A computer-readable storage medium comprising instructions stored thereon that, when executed by at least one processor, are configured to cause a computing system to: receive, by a reader in an Ambient Internet of Things (AIoT) wireless system, a configuration, the AIoT wireless system comprising an AIoT device, the reader, and an activator, the configuration comprising time-frequency resources for reading a reply signal transmitted by the AIoT device in response to an activation signal transmitted by the activator, and trigger conditions for causing the reader to transmit a reconfiguration trigger signal to a session control unit; evaluate, by the reader, the trigger conditions to determine that at least one trigger condition of the trigger conditions has been satisfied or fulfilled; and transmit, by the reader, the reconfiguration trigger signal to the session control unit to cause reconfiguration of an AIoT activation and reading session, wherein the reconfiguration trigger signal comprises a trigger cause based on the at least one trigger condition of the trigger conditions that has been satisfied or fulfilled.

27. A computer-readable storage medium comprising instructions stored thereon that, when executed by at least one processor, are configured to cause a computing system to: receive, by an activator in an Ambient Internet of Things (AIoT) wireless system, a configuration, the AIoT wireless system comprising an AIoT device, a reader, and the activator, the configuration comprising time-frequency resources for transmitting an activation signal, and trigger conditions for causing the activator to transmit a reconfiguration trigger signal to a session control unit; evaluate, by the activator, the trigger conditions to determine that at least one trigger condition of the trigger conditions has been satisfied or fulfilled; and transmit, by the activator, the reconfiguration trigger signal to the session control unit to cause reconfiguration of an AIoT activation and reading session, wherein the reconfiguration trigger signal comprises a trigger cause based on the at least one trigger condition of the trigger conditions that has been satisfied or fulfilled.

28. A computer-readable storage medium comprising instructions stored thereon that, when executed by at least one processor, are configured to cause a computing system to: transmit, by a session control unit in an Ambient Internet of Things (AIoT) wireless system, a configuration, the AIoT wireless system comprising an AIoT device, a reader, and an activator, the configuration comprising time-frequency resources for transmission of at least one of an activation signal and a reply signal, and trigger conditions for causing at least one of the activator and the reader to transmit a reconfiguration trigger signal in the event that at least one trigger condition of the trigger conditions is satisfied or fulfilled; receiving, by the session control unit, the reconfiguration trigger signal from at least one of the activator and the reader, the reconfiguration trigger signal comprising a trigger cause based on the at least one trigger condition of the trigger conditions that has been satisfied or fulfilled; and performing, by the session control unit, reconfiguration of the AIoT activation and reading session based on the reconfiguration trigger signal.

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