Wireless communication method and communication device

Abstract

Provided are a wireless communication method and communication device. Said method comprises: a first device receives authorization information sent by a second device, the authorization information indicating the resource used for A-IoT communication between the first device and a third device. Thus, the first device receives the authorization information sent by the second device, and the authorization information indicates the resource used for A-IoT communication between the first device and the third device, achieving the A-IoT communication with the third device using the resource indicated by the authorization information.

Description

Method and communication device for wireless communication TECHNICAL FIELD

[0001] The present application relates to the technical field of communication, and more particularly, to a method and a communication device for wireless communication. BACKGROUND

[0002] An ambient IoT (A-IoT) generally includes a base station and A-IoT devices, and can further include other nodes, such as intermediate nodes and carrier nodes. How these nodes communicate with the A-IoT devices becomes a problem to be solved.

[0003] SUMMARY

[0004] The present application provides a method and a communication device for wireless communication. The following introduces various aspects of the present application.

[0005] In a first aspect, a method for wireless communication is provided, comprising: receiving, by a first device, grant information sent by a second device, wherein the grant information indicates resources for A-IoT communication between the first device and a third device.

[0006] In a second aspect, a method for wireless communication is provided, comprising: sending, by a second device, grant information to a first device, wherein the grant information indicates resources for A-IoT communication between the first device and a third device.

[0007] In a third aspect, a communication device is provided, which is a first device, comprising: a transceiver configured to receive grant information sent by a second device, wherein the grant information indicates resources for A-IoT communication between the first device and a third device.

[0008] In a fourth aspect, a communication device is provided, which is a second device, comprising: a transceiver configured to send grant information to a first device, wherein the grant information indicates resources for A-IoT communication between the first device and a third device.

[0009] In a fifth aspect, a communication device is provided, comprising a transceiver, a memory and a processor, wherein the memory is configured to store a program, the processor is configured to invoke the program in the memory and control the transceiver to receive or send signals, so that the communication device performs the method of the first aspect.

[0010] In a sixth aspect, a communication device is provided, comprising a transceiver, a memory and a processor, the memory is configured to store a program, the processor is configured to invoke the program in the memory and control the transceiver to receive or send a signal, so that the communication device performs the method in the second aspect.

[0011] In a seventh aspect, an apparatus is provided, comprising a processor configured to invoke a program from a memory, so that the apparatus performs the method in any one of the first aspect or the second aspect.

[0012] In an eighth aspect, a chip is provided, comprising a processor configured to invoke a program from a memory, so that a device installed with the chip performs the method in the first aspect or the second aspect.

[0013] In a ninth aspect, a computer readable storage medium is provided, which stores a program, the program causes a computer to perform the method in the first aspect or the second aspect.

[0014] In a tenth aspect, a computer program product is provided, comprising a program, the program causes a computer to perform the method in the first aspect or the second aspect.

[0015] In an eleventh aspect, a computer program is provided, the computer program causes a computer to perform the method in the first aspect or the second aspect.

[0016] In the embodiments of the present application, the first device receives the authorization information of the second device, the authorization information indicates the resource used for the A-IoT communication between the first device and the third device, so as to realize the A-IoT communication with the third device by using the resource indicated by the authorization information. BRIEF DESCRIPTION OF DRAWINGS

[0017] FIG. 1 is an example of a system architecture of a wireless communication system suitable for the embodiments of the present application.

[0018] FIG. 2 is a structural schematic diagram of an A-IoT device suitable for the embodiments of the present application.

[0019] FIG. 3 is a schematic diagram of the working principle of a radio frequency acquisition module of an A-IoT device suitable for the embodiments of the present application.

[0020] FIG. 4 is a schematic diagram of backscattering suitable for the embodiments of the present application.

[0021] FIG. 5 is a schematic diagram of load modulation suitable for the embodiments of the present application.

[0022] FIG. 6 is a schematic diagram of the communication between a base station and an A-IoT device suitable for the embodiments of the present application.

[0023] FIG. 7 is a schematic diagram of communication between a base station, an intermediate node, and an A-IoT device, which can be applied to the embodiments of the present application.

[0024] FIG. 8 is a schematic flowchart of a method of wireless communication according to an embodiment of the present application.

[0025] FIG. 9 is a schematic diagram of message transmission in a determination process of an A-IoT device.

[0026] FIG. 10 is a schematic diagram of relative positions between resources of different grant configuration indications.

[0027] FIG. 11 is a schematic diagram of a structure of a communication device according to an embodiment of the present application.

[0028] FIG. 12 is a schematic diagram of a structure of a communication device according to another embodiment of the present application.

[0029] FIG. 13 is a schematic diagram of an apparatus for communication according to an embodiment of the present application. DETAILED DESCRIPTION

[0030] The technical solutions of the present application will be described below with reference to the accompanying drawings.

[0031] Wireless communication system

[0032] FIG. 1 is an example diagram of a system architecture of a wireless communication system 100 to which embodiments of the present application can be applied. The wireless communication system 100 can include a network device 110 and a terminal device 120. The network device 110 can be a device that communicates with the terminal device 120. The network device 110 can provide network coverage for a specific geographic area and can communicate with the terminal device 120 located within the coverage area. The terminal device 120 can access a network, such as a wireless network, through the network device 110. Optionally, the wireless communication system 100 can further include a network controller, a mobility management entity, and other network entities, which are not limited by embodiments of the present application.

[0033] It should be understood that the technical solutions of the embodiments of the present application can be applied to various communication systems, such as a fifth generation (5G) system or new radio (NR), a long term evolution (LTE) system, an LTE frequency division duplex (FDD) system, an LTE time division duplex (TDD), and the like. The technical solutions provided by the present application can also be applied to future communication systems, such as a sixth generation mobile communication system, a satellite communication system, and the like.

[0034] In the embodiments of the present application, the terminal device can also be referred to as a user equipment (UE), an access terminal, a user unit, a user station, a mobile station, a mobile terminal (MT), a remote station, a remote terminal, a mobile device, a user terminal, a terminal, a wireless communication device, a user agent or a user apparatus. The terminal device in the embodiments of the present application can refer to a device providing voice and / or data connectivity for a user, and can be used to connect people, things and machines, such as handheld devices with wireless connection function, vehicle-mounted devices, etc. The terminal device in the embodiments of the present application can be a mobile phone, a tablet computer (Pad), a notebook computer, a palm computer, a mobile internet device (MID), a wearable device, a virtual reality (VR) device, an augmented reality (AR) device, a wireless terminal in industrial control, a wireless terminal in self driving, a wireless terminal in remote medical surgery, a wireless terminal in smart grid, a wireless terminal in transportation safety, a wireless terminal in smart city, a wireless terminal in smart home, etc. Optionally, the terminal device can be used to act as a base station. For example, the terminal device can act as a scheduling entity, which provides sidelink signals between terminal devices in vehicle to everything (V2X) or device to device (D2D), etc. For example, a cellular phone and a car communicate with each other using sidelink signals. The cellular phone and the smart home device communicate with each other without relaying the communication signals through the base station.

[0035] In embodiments of the present application, the network device can be a device for communicating with a terminal device. The network device can be, for example, an access network device or a radio access network device. For example, the network device can be a base station. The base station can broadly cover various names in the following or can be replaced by the following names, for example: Node B (Node B), evolved Node B (eNB), next generation Node B (gNB), relay station, access point, transmitting and receiving point (TRP), transmitting point (TP), master station (MeNB), secondary station (SeNB), multi-standard radio (MSR) node, home base station, network controller, access node, wireless node, access point (AP), transmission node, transceiver node, baseband unit (BBU), remote radio unit (RRU), active antenna unit (AAU), remote radio head (RRH), central unit (CU), distributed unit (DU), positioning node, etc. The base station can be a macro base station, a micro base station, a relay node, a donor node, or the like, or a combination thereof. The base station can also refer to a communication module, modem, or chip for being disposed in the aforementioned device or apparatus. The base station can also be a mobile switching center and a device that assumes a base station function in device-to-device (D2D), vehicle-to-everything (V2X), machine-to-machine (M2M) communication, a network side device in a 6G network, a device that assumes a base station function in a future communication system, etc. The base station can support networks of the same or different access technologies. Embodiments of the present application do not limit the specific technology and specific device form adopted by the network device.

[0036] The base station can be fixed or mobile. For example, a helicopter or a drone can be configured to act as a mobile base station, and one or more cells can move according to the location of the mobile base station. In other examples, a helicopter or a drone can be configured to act as a device that communicates with another base station.

[0037] In some deployments, the network device can refer to a CU or a DU; or the network device includes a CU and a DU. The gNB can also include an AAU.

[0038] The network device and the terminal device can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; can also be deployed on water; and can also be deployed on airplanes, balloons and satellites in the air. The scene in which the network device and the terminal device are located is not limited in the embodiments of the present application.

[0039] It should be understood that all or part of the functions of the communication device in the present application can also be implemented by software functions running on hardware, or by virtualized functions instantiated on a platform, such as a cloud platform.

[0040] A-IoT

[0041] The communication adopts energy harvesting and backscattering communication technology. The A-IoT device refers to an IoT device that is driven by various environmental energies, such as wireless radio frequency energy, light energy, solar energy, thermal energy, mechanical energy and the like. Such a device can have no energy storage capability, or can have very limited energy storage capability (for example, using a capacitor with a capacity of tens of uF). Compared with a traditional IoT device, the A-IoT device has many advantages such as no conventional battery, no maintenance, small size, low complexity, low cost and long service life.

[0042] The environmental IoT generally includes network devices and A-IoT devices. For example, as shown in FIG. 2, the network device is used to send wireless energy supply signals and downlink communication signals to the A-IoT device, and receive backscattering signals of the A-IoT device. A basic A-IoT device generally includes an energy harvesting module, a backscattering communication module and a low-power computing module. In addition, the A-IoT device can also include a memory or a sensor, which is used to store basic information (such as article identification, etc.) or obtain environmental temperature, environmental humidity and other sensor data.

[0043] The key technologies of the environmental IoT mainly include radio frequency energy harvesting and backscattering communication.

[0044] As shown in FIG. 3, the radio frequency energy harvesting module realizes the collection of spatial electromagnetic wave energy based on the principle of electromagnetic induction, and then obtains the energy required to drive the A-IoT device to work, such as to drive low-power demodulation, modulation modules, sensors and memory reading and the like. Therefore, the A-IoT device does not need a traditional battery.

[0045] As shown in FIG. 4, the A-IoT device receives the wireless signal sent by the network, modulates the wireless signal, loads the information to be sent, and radiates the modulated signal from the antenna. This information transmission process is called backscatter communication. Backscatter and load modulation are inseparable. Load modulation adjusts and controls the circuit parameters of the oscillation loop of the A-IoT device according to the beat of the data stream, so that the size of the electronic tag impedance and other parameters change, thereby completing the modulation process. Load modulation technology mainly includes resistance load modulation and capacitance load modulation. In resistance load modulation, a resistance is connected in parallel with the load, and the resistance is controlled to be turned on or off based on the binary data stream, for example, as shown in FIG. 5. The on-off of the resistance will cause the change of the circuit voltage, so as to realize amplitude shift keying (ASK), that is, the modulation and transmission of the signal are realized by adjusting the amplitude of the backscatter signal of the A-IoT device. Similarly, in capacitance load modulation, the on-off of the capacitance can realize the change of the circuit resonance frequency, realize frequency shift keying (FSK), that is, the modulation and transmission of the signal are realized by adjusting the working frequency of the backscatter signal of the A-IoT device.

[0046] It can be seen that the A-IoT device modulates the incoming signal by means of load modulation to realize the backscatter communication process. Therefore, the A-IoT device has the following advantages:

[0047] 1) The A-IoT device does not actively emit signals, so it does not need a complex radio frequency link, such as a power amplifier (PA), a radio frequency filter, etc.

[0048] 2) The A-IoT device does not need to actively generate high-frequency signals, so it does not need a high-frequency crystal oscillator;

[0049] 3) With backscatter communication, signal transmission does not consume the energy of the A-IoT device itself.

[0050] Based on the energy source and usage of the A-IoT device, the A-IoT device can be divided into the following types:

[0051] 1) Passive A-IoT device

[0052] A-IoT device does not need to be built-in battery, A-IoT device close to network device (for example, RFID system reader), A-IoT device is in the near field range formed by the antenna radiation of network device. Therefore, A-IoT device antenna generates induced current through electromagnetic induction, and the induced current drives the low-power chip circuit of A-IoT device to realize the demodulation of forward link signal (or called downlink or link from network device to A-IoT device) and signal modulation of backward link (or called uplink or link from A-IoT device to network device) and other work. For backscatter link, A-IoT device uses backscatter implementation to transmit signals.

[0053] As can be seen, passive A-IoT device does not need to be built-in battery to drive, which is a truly A-IoT device.

[0054] Passive A-IoT device does not need battery, and radio frequency circuit and baseband circuit are very simple, for example, it does not need low noise amplifier (LNA), PA, crystal oscillator, analog to digital converter (ADC) and other devices, so it has the advantages of small size, light weight, low price, long service life and so on.

[0055] 2) Semi-passive A-IoT device

[0056] Semi-passive A-IoT device itself does not install a conventional battery, but can use radio frequency (RF) energy harvesting module to collect radio wave energy, or use solar energy, light energy, thermal energy, kinetic energy harvesting module to collect energy, and store the collected energy in an energy storage unit (for example, capacitor). After the energy storage unit obtains energy, it can drive the low-power chip circuit of A-IoT device to realize the demodulation of forward link signal and the signal modulation of backward link and other work. For backscatter link, A-IoT device uses backscatter implementation to transmit signals.

[0057] As can be seen, semi-passive A-IoT device does not need to be built-in battery to drive, although it uses the energy stored in the capacitor in the work, but the energy comes from the radio energy collected by the energy harvesting module, so it is also a truly A-IoT device.

[0058] Semi-passive A-IoT device inherits many advantages of passive A-IoT device, so it has the advantages of small size, light weight, low price, long service life and so on.

[0059] 3) Active A-IoT device

[0060] Some A-IoT devices used in some scenarios can also be active A-IoT devices, which can be built-in with a battery (e.g., a regular battery, a dry battery, a rechargeable lithium battery, etc.). The battery is used to drive the low-power chip circuit of the A-IoT device to realize the demodulation of the forward link signal and the modulation of the backward link signal, etc. For the backscatter link, the A-IoT device uses the backscatter mode to transmit signals. Therefore, the zero power consumption of such A-IoT devices mainly reflects that the signal transmission of the backward link does not require the power of the terminal itself, but uses the backscatter mode. Although the active A-IoT device uses a battery, due to the use of ultra-low power communication technology, the power consumption is very low, so the working life of the battery can be greatly improved compared with the prior art.

[0061] The built-in battery of the active A-IoT device supplies power to the radio frequency identification device (RFID) chip to increase the read-write distance of the tag and improve the reliability of communication. Therefore, it can be applied in some scenarios with relatively high requirements on communication distance, reading delay, etc.

[0062] As known, the business type of the environmental Internet of Things will also be dominated by the industry business. Therefore, the A-IoT device based on the transmitter type includes the following types:

[0063] 1) A-IoT device based on backscatter

[0064] Such A-IoT devices use the backscatter mode to transmit uplink data as described above. Such devices do not have an active transmitter for active transmission, but only have a backscatter transmitter. Therefore, when such A-IoT devices transmit data, the network device needs to provide a carrier and perform backscatter based on the carrier to realize data transmission.

[0065] 2) A-IoT device based on active transmitter

[0066] Such A-IoT devices use an active transmitter with active transmission capability to transmit uplink data, so such A-IoT devices can transmit data using their own active transmitter when transmitting data, without the need for the network device to provide a carrier. The active transmitter suitable for A-IoT devices can be, for example, an ultra-low-power ASK, an ultra-low-power FSK transmitter, etc. Based on the current implementation, the overall power consumption of such a transmitter can be reduced to 400-600 uw when transmitting a 100 uw signal.

[0067] 3) A-IoT device with both backscatter and active transmitter

[0068] Such A-IoT devices can support both backscattering and active transmitters. A-IoT devices can determine which uplink signal transmission mode to use, e.g., backscattering or active transmitter, based on different situations (e.g., power situation, available ambient energy), or based on network device’s scheduling.

[0069] Low power internet of things based on cellular network

[0070] With the booming development of cellular internet of things, 3GPP has standardized internet of things technologies such as NB-IoT, machine-type communication (MTC), reduced capability (RedCap), etc., but there are still many scenarios of internet of things communication needs that cannot be met using existing technologies, such as harsh communication environments (e.g., high temperature, extremely low temperature, high humidity, high pressure, high radiation, high-speed motion, etc.), extremely small size terminal form requirements, extremely low cost, etc.

[0071] Therefore, in order to cover these unmet internet of things communication needs, ultra-low cost, extremely small size, battery-free / maintenance-free internet of things are also needed in cellular networks, and environmental internet of things can exactly meet this demand.

[0072] Based on the discussion of the application scenarios of A-IoT devices by 3GPP SA1, A-IoT devices can be used in at least the following four scenarios:

[0073] 1) Object identification, such as logistics, production line product management, supply chain management;

[0074] 2) Environmental monitoring, such as temperature, humidity, and harmful gas monitoring of working environment and natural environment;

[0075] 3) Positioning, such as indoor positioning, intelligent lost-and-found, production line article positioning, etc.; and,

[0076] 4) Intelligent control, such as intelligent control of various appliances in smart home (e.g., turning on / off air conditioner, adjusting temperature), intelligent control of various facilities in agricultural greenhouse (e.g., automatic irrigation, fertilization).

[0077] In a low-power Internet of Things based on a cellular network, an A-IoT device (also referred to simply as a device) can receive A-IoT control / data / signal from a reader, which can be a base station or an intermediate node used to forward data or signals between the A-IoT device and the base station, as shown in FIGS. 6 and 7. If the A-IoT device transmits A-IoT control / data / signal to the reader in a backscattering manner, a carrier needs to be provided to the A-IoT device, which can be provided by a carrier node, which can be the reader or another node. In addition, the A-IoT device can also transmit A-IoT control / data / signal to the reader in an active transmission manner.

[0078] In a low-power Internet of Things based on a cellular network, A-IoT communication includes reader-to-device (R2D) transmission and device-to-reader (D2R) transmission, for example, a dedicated frequency band, an uplink frequency band, a downlink frequency band, or a guard frequency band between the uplink frequency band and the downlink frequency band can be used for A-IoT communication in embodiments of the present application.

[0079] In addition to the base station and the A-IoT device, the intermediate node and the carrier node can also be included in the environmental Internet of Things, as shown in FIGS. 6 and 7. In embodiments of the present application, the intermediate node and the carrier node are also collectively referred to as the first device. Currently, there is no clear solution for how the first device performs A-IoT communication.

[0080] To this end, embodiments of the present application provide a method of wireless communication, in which a first device receives authorization information of a second device, the authorization information indicating resources used for A-IoT communication between the first device and a third device, so as to implement A-IoT communication with the third device using the resources indicated by the authorization information. The second device can be a network device, such as a base station, and the third device can be an A-IoT device.

[0081] The A-IoT communication between the first device and the third device, for example, can refer to a transmission of an A-IoT signal from the first device to the third device, hereinafter also referred to as A-IoT transmission. Wherein, in a case that the first device is an intermediate node, the A-IoT transmission refers to a transmission of a R2D message, or a R2D transmission, wherein the R2D message can be transmitted by a second device to the intermediate node, and the intermediate node transmits the R2D message to the third device; in a case that the first device is a carrier node, the A-IoT transmission refers to a carrier transmission, for example, a continuous wave (CW) transmission, which can be used for backscattering by the first device. That is, the A-IoT transmission can include a carrier transmission, or include a transmission of a R2D message or a R2D transmission. Similarly, the A-IoT reception can include a reception of a carrier, or include a reception of a D2R message or a D2R transmission.

[0082] Optionally, the intermediate node and the carrier node can be the same device (for example, the same terminal device) or different devices (for example, different terminal devices). In a case that the intermediate node and the carrier node are different devices, the intermediate node can be controlled by a network device such as a base station, or can be controlled by the intermediate node.

[0083] Hereinafter, the embodiments of the present application will be described in detail in combination with FIG. 8.

[0084] FIG. 8 is a flow diagram of a wireless communication method provided by an embodiment of the present application. The method 800 shown in FIG. 8 can be performed by a first device and a second device, wherein the first device is for example an intermediate node and / or a carrier node, and the second device is for example a base station.

[0085] Referring to FIG. 8, in step 810, the second device transmits authorization information to the first device.

[0086] Correspondingly, in step 820, the first device receives the authorization information transmitted by the second device.

[0087] Wherein, the authorization information is used to indicate a resource for A-IoT communication between the first device and a third device. The third device is for example an A-IoT device.

[0088] The authorization information, for example, includes a configured grant or a dynamic grant, wherein the configured grant is static or semi-static. For example, the static configured grant includes an authorization configured completely by high layer signaling, and the semi-static configured grant includes an authorization configured by high layer signaling and activated via physical layer signaling.

[0089] The resource indicated by the authorization information includes, for example, a frequency domain resource, which can be located in one or more of the following frequency bands: a dedicated frequency band for A-IoT communication, an uplink frequency band, a downlink frequency band, and a guard frequency band between the uplink frequency band and the downlink frequency band.

[0090] In the embodiments of the present application, the A-IoT communication between the first device and the A-IoT device is solved from four aspects, i.e., the way of indicating the resource for A-IoT communication by the authorization information, the use of the resource by the first device in a special state, the power control of the first device, and the timing problem of the first device in the A-IoT communication process. The following will be described in detail in combination with Embodiment 1, Embodiment 2, Embodiment 3 and Embodiment 4, respectively.

[0091] Embodiment 1

[0092] In the following, the configuration method of the authorization information will be described in detail taking the scenario of the inventory device as an example.

[0093] The A-IoT communication can be used for inventory devices, for example, as shown in FIG. 9, the inventory process can sequentially include an A-IoT paging message from the reader to the device, a trigger message of A-IoT Msg 1 from the reader to the device, A-IoT Msg 1 from the device to the reader, Msg 2 from the reader to the device, and Msg 3 from the device to the reader. The trigger message of A-IoT Msg 1 is used to indicate the transmission of A-IoT Msg 1, and the trigger message of A-IoT Msg 1 can also be absent, in which case the A-IoT paging message will indicate the time for the A-IoT device to transmit A-IoT Msg 1.

[0094] In some implementations, the resource of the A-IoT paging message in the A-IoT communication is indicated by the first authorization information, and the resources of the multiple messages after the A-IoT paging message are simultaneously indicated by the second authorization information. The multiple messages after the A-IoT paging message include, for example, one or more of the following: the trigger message of A-IoT Msg 1, A-IoT Msg 1, Msg 2 and Msg 3.

[0095] As an example, as shown in FIG. 10, the resource of the A-IoT paging message is indicated by the first authorization information, and the resources of the multiple messages are simultaneously indicated by the second authorization information, wherein the resource indicated by the second configuration authorization is located between two consecutive resources indicated by the first configuration authorization.

[0096] In some implementations, the resource of the A-IoT paging message is indicated by the first grant information, and the resources of the plurality of messages are indicated by the second grant information. In the case that the plurality of messages after the A-IoT paging message comprise the triggering message of the A-IoT Msg 1, the time interval between the resource indicated by the first grant information and the resource indicated by the second grant information should be greater than the minimum time interval between two consecutive R2D transmissions. In the case that the plurality of messages do not comprise the triggering message of the A-IoT Msg 1, the time interval between the resource indicated by the first grant information and the resource indicated by the second grant information should be greater than the minimum time interval between the R2D transmission and its associated D2R transmission.

[0097] For example, assuming that the grant information is a configured grant, in order to reduce the complexity of the configuration and the overhead of the configuration signaling, the required A-IoT communication resources for the intermediate node can be provided by a first configured grant and a second configured grant. The first configured grant is used to indicate the resource of the A-IoT paging message, and the second configured grant is used to indicate the resources of the triggering message of the A-IoT Msg 1 (if any), the A-IoT Msg 1, the Msg 2 and the Msg 3. Referring to FIG. 10, the resource indicated by the second configured grant can be located between two consecutive resources indicated by the first configured grant. Further, referring to FIG. 9, the interval between the resources indicated by the first configured grant and the second configured grant should be greater than T R2D_R2D_min , where T R2D_R2D_min represents the minimum interval between two consecutive R2D transmissions for the same device. Otherwise, the interval between the resources indicated by the first configured grant and the second configured grant should be greater than T R2D_min , where T R2D_min represents the minimum interval between the R2D transmission and the corresponding D2R transmission.

[0098] In some implementations, the resource of the A-IoT paging message in the A-IoT communication is indicated by the first grant information, and the resources of at least part of the plurality of messages after the A-IoT paging message are indicated by different grant information. For example, the plurality of messages are respectively indicated by different grant information. For another example, the resources of part of the plurality of messages are indicated by different grant information.

[0099] For example, assuming the grant information is a configured grant, the intermediate node can be provided with resources for A-IoT communication by a first configured grant and another plurality of configured grants, wherein the first configured grant is used for sending an A-IoT paging message, and the other plurality of configured grants respectively indicate resources for transmitting a trigger message (if any), A-IoT Msg1, Msg2 and Msg3. Wherein, there is a clear association between each configured grant and the message it is used for sending, and the interval between the resources indicated by adjacent configured grants should also meet similar requirements as described above.

[0100] For example, assuming the grant information is a dynamic grant, in order to reduce the number of bits carried in the dynamic grant, the dynamic grant can simultaneously indicate resources for sending a trigger message (if any), A-IoT Msg1, Msg2 and Msg3. Or, the dynamic grant only indicates the sending resources of one or more of the trigger message (if any), A-IoT Msg1, Msg2 and Msg3, for example, a dynamic grant indicating the resources of the trigger message of the A-IoT Msg1 is different from a dynamic grant simultaneously indicating the resources of A-IoT Msg1, Msg2 and Msg3.

[0101] Embodiment 2

[0102] The first device can be in a special state, for example, a radio link failure (RLF) state or a handover (HO) state, at this time, the first device needs to judge the use of the resources indicated by the grant information, such as continuing to use, switching or releasing the resources, etc.

[0103] As an example, in the case where the first device is in an RLF state, if the A-IoT transmission is in a protection band or a dedicated band, the first device can continue to use the resources indicated by the existing configured grant or dynamic grant; if the A-IoT transmission is in an uplink band or a downlink band, the first device releases the resources indicated by the existing configured grant or dynamic grant, or continues to use the resources when the A-IoT transmission is in progress until the resources are released after the A-IoT transmission ends.

[0104] For example, in the case where the first device is in an HO state, the source base station can forward the A-IoT resources required by the first device to the target base station, and carry the resources authorized by the target base station for the first device in the handover command. After receiving the handover command, the first device can start using the resources authorized by the target node, or start using the resources authorized by the target node after completing the A-IoT transmission currently in progress.

[0105] The following describes the case where the first device is an intermediate node and a carrier node for A-IoT communication, respectively.

[0106] Intermediate node

[0107] In some implementations, in the case where the first device is an intermediate node, in the case where the frequency domain resource indicated by the authorization information is located in a dedicated frequency band or a guard frequency band, the intermediate node performs a first operation for the dedicated frequency band and the guard frequency band; and / or, in the case where the frequency domain resource indicated by the authorization information is located in an uplink frequency band or a downlink frequency band, the intermediate node performs a second operation for the uplink frequency band and the downlink frequency band.

[0108] First, the case where the intermediate node is in an RLF state is described.

[0109] In the case where the frequency domain resource indicated by the authorization information is located in a dedicated frequency band or a guard frequency band:

[0110] 1) For configured grant, the first operation may, for example, include: continuing to use the frequency domain resource for R2D transmission until completion of radio resource control (RRC) reestablishment; or, continuing to use the frequency domain resource for R2D transmission and releasing the frequency domain resource after RRC reestablishment fails.

[0111] 2) For dynamic grant, the first operation may, for example, include: continuing to use the frequency domain resource for R2D transmission until completion of RRC reestablishment; or, continuing to use the frequency domain resource for R2D transmission and releasing the frequency domain resource after RRC reestablishment fails; or, releasing the frequency domain resource after completion of ongoing R2D transmission on the frequency domain resource; or, releasing the frequency domain resource that has not yet been used for R2D transmission; or, releasing the frequency domain resource after completion of transmission of an R2D message being transmitted or to be transmitted on the frequency domain resource.

[0112] In the case where the frequency domain resource indicated by the authorization information is located in an uplink frequency band or a downlink frequency band, the second operation may, for example, include: immediately releasing the frequency domain resource; or, releasing the frequency domain resource after completion of transmission of an R2D message being transmitted or to be transmitted on the frequency domain resource.

[0113] Wherein, the R2D message may, for example, include a Msg 2 being transmitted, or include a Msg 2 to be transmitted and an A-IoT Msg 1 corresponding to the Msg 2 has been transmitted.

[0114] The following is described in detail in conjunction with examples.

[0115] If a link failure occurs at the intermediate node, in the case that the intermediate node uses a protection frequency band or a dedicated frequency band for R2D transmission, since there is no uplink transmission or downlink transmission of a legacy terminal on the protection frequency band and the dedicated frequency band, the intermediate node can perform the following operations.

[0116] For example, the intermediate node can continue to use the resource indicated by the existing configured grant or dynamic grant to communicate with the A-IoT device until the RRC connection reestablishment between the intermediate node and the base station is completed. At this time, since the RRC connection has been reestablished, the intermediate node can determine the resource for communication with the A-IoT device based on the new grant information sent by the base station, for example. If the RRC connection reestablishment fails, the intermediate node should release the resource indicated by the configured grant or dynamic grant.

[0117] For another example, since the configured grant is usually semi-statically configured, the base station does not frequently change the resource indicated therein, and therefore the intermediate node in the RLF state can continue to use the existing configured grant until the RRC connection reestablishment is completed. If the RRC connection reestablishment fails, the intermediate node should release the resource indicated by the configured grant. For the dynamic grant, the base station can allocate part or all of the resource indicated therein to other intermediate nodes or carrier nodes. In order to reduce the interference of the R2D message sent by the intermediate node to the A-IoT reception of other intermediate nodes or carrier nodes: 1) if the intermediate node has started to use the resource indicated by the grant information for R2D transmission (which does not include the A-IoT paging message), the intermediate node can continue to use the resource indicated by the dynamic grant to complete the current R2D transmission, and then release the resource indicated by the dynamic grant, so as to avoid the interruption of the current R2D transmission; 2) if the intermediate node has not started to use the resource indicated by the dynamic grant for R2D transmission, the intermediate node should release the resource indicated by the dynamic grant. That is, as long as it is not for sending the A-IoT paging message, the intermediate node can continue to use the resource indicated by the dynamic grant to complete the current R2D transmission. Alternatively, for the dynamic grant, in order to avoid the interruption of the inventory process, the resource indicated by the dynamic grant is being used to send Msg 2, or the resource indicated by the dynamic grant will be used to send Msg 2, and the A-IoT Msg 1 corresponding to Msg 2 has been sent, then the intermediate node can continue to use the dynamic grant to complete the sending of Msg 2, and then release the resource indicated by the dynamic grant. That is, as long as it is for sending Msg 2, the resource indicated by the dynamic grant can be continued to be used until the message is sent.

[0118] If a link failure occurs at the intermediate node, in the case where the intermediate node uses the uplink frequency band or the downlink frequency band for R2D transmission, since the intermediate node cannot be accurately synchronized with the base station at this time, the uplink is in an out-of-sync state, in order to avoid interference on the uplink and downlink reception, the intermediate node can perform the following operations.

[0119] For example, the intermediate node immediately releases the resources indicated by the existing dynamic grant and the configured grant, and stops the R2D transmission being performed using the resources of the dynamic grant or the configured grant.

[0120] For another example, in order to avoid interruption of the inventory process, if the resources in the dynamic grant or the configured grant are being used to send Msg2, or will be used to send Msg2, and the A-IoT Msg1 corresponding to the Msg2 has been sent, the intermediate node can continue to use the dynamic grant or the configured grant to complete the message sending, and then release the resources indicated by the dynamic grant or the configured grant.

[0121] Secondly, the case where the intermediate node is in the HO state is described.

[0122] 1) For the configured grant, the first operation and / or the second operation may, for example, include: continuing to use the frequency domain resource for R2D transmission until receiving the authorization information sent by the target base station; or, continuing to use the frequency domain resource for R2D transmission and releasing the frequency domain resource after the handover fails; or, in the case where the HO handover is a dual active protocol stack (DAPS) handover, continuing to use the frequency domain resource for R2D transmission until receiving the authorization information sent by the source base station or the target base station; or, releasing the frequency domain resource after completing the ongoing R2D transmission on the frequency domain resource; or, immediately releasing the frequency domain resource; or, releasing the frequency domain resource after completing the inventory for the third device. Optionally, in the case where the intermediate node releases the frequency domain resource, the intermediate node can use the resources authorized by the target base station for the intermediate node for R2D transmission.

[0123] 2) For dynamic grant, the first operation and / or the second operation may, for example, comprise: continuing to use the frequency domain resource for R2D transmission until receiving the grant information sent by the target base station; or, continuing to use the frequency domain resource for R2D transmission and releasing the frequency domain resource after the handover fails; or, in the case of DAPS handover, continuing to use the frequency domain resource for R2D transmission until receiving the grant information sent by the source base station or the target base station; or, releasing the frequency domain resource after completing the ongoing R2D transmission on the frequency domain resource; or, immediately releasing the frequency domain resource; or, releasing the frequency domain resource that has not been used for R2D transmission; or, releasing the frequency domain resource after the R2D message being sent or to be sent on the frequency domain resource is completed; or, releasing the frequency domain resource after completing the inventory for the third device. Optionally, in the case of releasing the frequency domain resource, the intermediate node may use the resource granted by the target base station for the intermediate node for R2D transmission.

[0124] wherein the R2D message may, for example, comprise a Msg 2 being sent, or comprise a Msg 2 to be sent and an A-IoT Msg 1 corresponding to the Msg 2 has been sent.

[0125] The following will be described in detail in conjunction with examples.

[0126] If the intermediate node is in the HO state, i.e., the intermediate node is in the process from receiving the handover command to completing the handover, in the case that the intermediate node uses the protection frequency band or the dedicated frequency band for R2D transmission, since there is no uplink transmission or downlink transmission of the conventional terminal on the protection frequency band and the dedicated frequency band, the intermediate node may perform the following operations.

[0127] For example, the intermediate node may continue to use the resource indicated by the existing configured grant or dynamic grant until receiving the new grant message (e.g., configured grant or dynamic grant) sent by the target base station and taking effect; or, if the handover fails, the intermediate node should release the resource indicated by the configured grant or dynamic grant.

[0128] For example, since the configured grant is usually semi-statically configured, the base station does not frequently change the resources indicated therein, thus the intermediate node in the HO state can continue to use the existing configured grant until it receives and takes effect of the new grant message (e.g., configured grant or dynamic grant) sent by the target base station. For the dynamic grant, the base station can allocate part or all of the resources therein to other intermediate nodes or carrier nodes, in order to reduce the interference caused by the R2D message sent by the intermediate node to the A-IoT reception of other intermediate nodes or carrier nodes: 1) if the intermediate node has started to use the resources indicated by the dynamic grant for R2D transmission (which does not include A-IoT paging message), the intermediate node can continue to use the resources indicated by the dynamic grant to complete the current R2D transmission, and then release the resources indicated by the dynamic grant, so as to avoid the interruption of the current R2D transmission; 2) if the intermediate node has not started to use the resources indicated by the dynamic grant for R2D transmission, the intermediate node should release the resources indicated by the dynamic grant. That is, as long as it is not sending A-IoT paging message, the intermediate node can continue to use the resources indicated by the dynamic grant to complete the current ongoing R2D transmission. Alternatively, for the dynamic grant, in order to avoid the interruption of the inventory process, the resources indicated by the dynamic grant are being used to send Msg 2, or the resources indicated by the dynamic grant will be used to send Msg 2, and the A-IoT Msg 1 corresponding to Msg 2 has been sent, then the intermediate node can continue to use the dynamic grant to complete the sending of Msg 2, and then release the resources indicated by the dynamic grant. That is, only when sending Msg 2, the resources indicated by the dynamic grant can be continued to be used until the message is sent.

[0129] For example, if DAPS handover, since the intermediate node maintains the connection with the source base station and the target base station at the same time, the intermediate node can continue to use the existing configured grant or the resources indicated by the dynamic grant until it receives and takes effect of the new grant information (e.g., configured grant or dynamic grant) sent by the source base station or the target base station.

[0130] For example, the source base station can forward to the target base station information of resources (e.g., resources indicated by the existing configured grant) of the A-IoT communication required by the intermediate node, ongoing A-IoT traffic, A-IoT traffic characteristics, etc. The intermediate node can receive the handover command carrying new grant information allocated by the target base station for the intermediate node. After the intermediate node receives the handover command, the intermediate node can: 1) release the resources indicated by the existing grant information after completing the ongoing R2D transmission, and use the resources indicated by the new grant information allocated by the target base station; 2) immediately release the resources indicated by the existing grant information, and start using the resources indicated by the new grant information allocated by the target base station; 3) to avoid interruption of the inventory process, the intermediate node releases the resources indicated by the existing grant information after completing the current inventory, and uses the resources indicated by the new grant information allocated by the target base station.

[0131] If the intermediate node experiences a link failure, in the case where the intermediate node uses the uplink frequency band or the downlink frequency band for R2D transmission, since the intermediate node can still maintain uplink and downlink synchronization with the source base station at this time, and the distance between the intermediate node that needs to be handed over and the source base station is usually far, the interference on uplink reception is small, and the same manner as described above for the protection frequency band and the dedicated frequency band can be used.

[0132] Carrier node

[0133] In some implementations, in the case where the first device is a carrier node, in the case where the frequency domain resource indicated by the grant information is located in the dedicated frequency band or the protection frequency band, the carrier node performs a third operation for the dedicated frequency band and the protection frequency band; and / or, in the case where the frequency domain resource indicated by the grant information is located in the uplink frequency band or the downlink frequency band, the carrier node performs a fourth operation for the uplink frequency band and the downlink frequency band.

[0134] First, the case where the carrier node is in an RLF state is described.

[0135] In the case where the frequency domain resource indicated by the grant information is located in the dedicated frequency band or the protection frequency band:

[0136] 1) For a configured grant, the third operation may, for example, include: continuing to use the frequency domain resource for carrier transmission until RRC reestablishment is completed; or, continuing to use the frequency domain resource for carrier transmission, and releasing the frequency domain resource after RRC reestablishment fails.

[0137] 2) For dynamic grant, the third operation may include, for example: continuing to use the frequency domain resource for carrier transmission until the RRC reestablishment is completed; or, continuing to use the frequency domain resource for carrier transmission, and releasing the frequency domain resource after the RRC reestablishment fails; releasing the frequency domain resource after assisting (or supporting) the third device to complete the ongoing D2R transmission; or, releasing the frequency domain resource that has not been used for carrier transmission; or, releasing the frequency domain resource after assisting (or supporting) the third device to transmit the D2R message that is being transmitted or will be transmitted.

[0138] In the case where the frequency domain resource indicated by the grant information is located in the uplink frequency band or the downlink frequency band, the fourth operation may include, for example: immediately releasing the frequency domain resource; or, releasing the frequency domain resource after assisting the third device to transmit the D2R message that is being transmitted or will be transmitted.

[0139] Wherein, the D2R message mentioned above may include, for example, the A-IoT Msg 1 being transmitted, or the Msg 3 to be transmitted and the A-IoT Msg 1 corresponding to the Msg 3 has been transmitted.

[0140] The following will be described in detail in conjunction with examples.

[0141] If the carrier node experiences a link failure, in the case where the carrier node transmits a carrier using a guard frequency band or a dedicated frequency band, since there is no uplink transmission or downlink transmission of a legacy terminal on the guard frequency band and the dedicated frequency band, the carrier node may perform the following operations.

[0142] For example, the carrier node may continue to use the resource indicated by the existing configured grant or dynamic grant to transmit a carrier to the A-IoT device until the RRC connection reestablishment between the carrier node and the base station is completed. At this time, since the RRC connection has been reestablished, the intermediate node may determine the resource for communication with the A-IoT device based on the new grant information transmitted by the base station. If the RRC connection reestablishment fails, the carrier node should release the resource indicated by the configured grant or dynamic grant.

[0143] For example, since the configured grant is usually semi-statically configured, the base station does not frequently change the resources indicated therein, and thus the carrier node in the RLF state can continue to use the existing configured grant until the RRC connection reestablishment is completed; if the RRC connection reestablishment fails, the carrier node should release the resources indicated by the configured grant. For the dynamic grant, the base station can allocate part or all of the resources indicated therein to other carrier nodes or intermediate nodes, in order to reduce the interference caused by the carrier node transmitting the carrier to the A-IoT reception of other carrier nodes or intermediate nodes: 1) if the carrier node has started to transmit the carrier using the resources indicated by the grant information, the carrier node can continue to use the resources indicated by the grant information to support the A-IoT device based on the carrier for backscattering to complete the current D2R transmission, and then release the resources indicated by the dynamic grant, so as to avoid the interruption of the current D2R transmission; 2) if the carrier node has not started to transmit the carrier using the resources indicated by the dynamic grant, the carrier node should release the resources indicated by the dynamic grant. That is, as long as it is not transmitting an A-IoT paging message, the carrier node can continue to use the resources indicated by the dynamic grant to transmit the carrier to support the A-IoT device to complete the current ongoing D2R transmission. Alternatively, for the dynamic grant, in order to avoid the interruption of the inventory process, the resources indicated by the dynamic grant are being used to transmit the carrier to support the A-IoT device based on the carrier for backscattering to transmit A-IoT Msg1 or Msg3, or the resources indicated by the dynamic grant are to be used to transmit the carrier to support the A-IoT device to transmit Msg3, and A-IoT Msg1 corresponding to Msg3 has been transmitted, the carrier node can continue to use the resources indicated by the dynamic grant to transmit the carrier to support the A-IoT device to complete the transmission of Msg3, and then release the resources indicated by the dynamic grant. That is, only when transmitting A-IoT Msg1 or Msg3, the resources indicated by the dynamic grant can be used for carrier transmission until the A-IoT device transmits the message.

[0144] If the carrier node experiences link failure, in the case where the carrier node transmits the carrier using the uplink frequency band or the downlink frequency band, since the carrier node cannot be accurately synchronized with the base station at this time, the uplink is in an out-of-sync state, in order to avoid interference to the uplink and downlink reception, the carrier node can perform the following operations.

[0145] For example, the carrier node immediately releases the resources indicated by the existing dynamic grant and configured grant, and stops the carrier transmission using the resources indicated by the dynamic grant or the configured grant.

[0146] For example, in order to avoid interruption of the inventory process, if the resource in the dynamic grant or the configured grant is being used to transmit a carrier to support an A-IoT device transmitting an A-IoT Msg 1 or Msg 3 based on the carrier for backscattering, or the resource is going to be used to transmit a carrier to support the A-IoT device transmitting a Msg 3, and an A-IoT Msg 1 corresponding to the Msg 3 has been transmitted, the carrier node can continue to use the dynamic grant or the configured grant to transmit the carrier to support the A-IoT device to complete the transmission of the Msg 3, and then release the dynamic grant.

[0147] Secondly, a case where the carrier node is in an HO state is described.

[0148] 1) For the configured grant, the third operation and / or the fourth operation may, for example, include: continuing to use the frequency domain resource for carrier transmission until receiving authorization information transmitted by the target base station; or, continuing to use the frequency domain resource for carrier transmission and releasing the frequency domain resource after the handover fails; or, in the case of DAPS handover, continuing to use the frequency domain resource for carrier transmission until receiving authorization information transmitted by the source base station or the target base station; or, releasing the frequency domain resource after assisting the third device to complete the ongoing D2R transmission; or, immediately releasing the frequency domain resource; or, releasing the frequency domain resource after completing the inventory for the third device. Optionally, in the case where the carrier node releases the frequency domain resource, the carrier node can use the resource authorized by the target base station for the intermediate node for carrier transmission.

[0149] 2) For the dynamic grant, the third operation and / or the fourth operation may, for example, include: continuing to use the frequency domain resource for carrier transmission until receiving authorization information transmitted by the target base station; or, continuing to use the frequency domain resource for carrier transmission and releasing the frequency domain resource after the handover fails; or, in the case of DAPS handover, continuing to use the frequency domain resource for carrier transmission until receiving authorization information transmitted by the source base station or the target base station; or, releasing the frequency domain resource after assisting the third device to complete the ongoing D2R transmission; or, immediately releasing the frequency domain resource; or, releasing the frequency domain resource after completing the inventory for the third device; releasing the frequency domain resource that has not been used for carrier transmission; or, releasing the frequency domain resource after assisting the third device to transmit a D2R message that is being transmitted or is going to be transmitted. Optionally, in the case where the carrier node releases the frequency domain resource, the carrier node can use the resource authorized by the target base station for the intermediate node for carrier transmission.

[0150] wherein the D2R message described above includes, for example, an A-IoT Msg 1 or Msg 3 that is being transmitted, or a Msg 3 that is going to be transmitted, and an A-IoT Msg 1 corresponding to the Msg 3 has been transmitted.

[0151] The following is described in detail in conjunction with examples.

[0152] If the carrier node is in the HO state, i.e., the carrier node is in the process from receiving the handover command to completing the handover, in the case where the carrier node transmits the carrier using the guard band or the dedicated band, since there is no uplink transmission or downlink transmission of the legacy terminal on the guard band and the dedicated band, the carrier node can perform the following operations.

[0153] For example, the resource indicated by the existing configured grant or dynamic grant is continued to be used until a new grant message (e.g., configured grant or dynamic grant) sent by the target base station is received and takes effect; or if the handover fails, the carrier node should release the resource indicated by the configured grant or dynamic grant.

[0154] For another example, since the configured grant is usually semi-statically configured, the base station does not frequently change the resource indicated therein, therefore, the carrier node in the HO state can continue to use the existing configured grant until a new grant message (e.g., configured grant or dynamic grant) sent by the target base station is received and takes effect. For the dynamic grant, the base station can allocate part or all of the resources therein to other intermediate nodes or carrier nodes, in order to reduce the interference caused by the carrier transmitted by the carrier node to the A-IoT reception of other intermediate nodes or carrier nodes: 1) if the carrier node has started to transmit the carrier using the resource indicated by the dynamic grant (which does not include the A-IoT paging message), the carrier node can continue to use the resource indicated by the dynamic grant to complete the current carrier transmission, and then release the resource indicated by the dynamic grant, so as to avoid the interruption of the current D2R transmission; 2) if the carrier node has not started to transmit the carrier using the resource indicated by the dynamic grant, the carrier node should release the resource indicated by the dynamic grant. That is, as long as it is not in the process of transmitting the A-IoT paging message, the carrier node can continue to use the resource indicated by the dynamic grant to transmit the carrier, so as to support the A-IoT device to complete the current ongoing D2R transmission. Or, for the dynamic grant, in order to avoid the interruption of the inventory process, the resource indicated by the dynamic grant is being used to transmit the A-IoT Msg1 or Msg3, or the resource indicated by the dynamic grant will be used to transmit the Msg3, and the A-IoT Msg1 corresponding to the Msg3 has been transmitted, the carrier node can continue to use the dynamic grant to transmit the carrier, so as to support the A-IoT device to complete the transmission of the A-IoT Msg1 or Msg3, and then release the resource indicated by the dynamic grant. That is, only when the A-IoT Msg1 or Msg3 is being transmitted, the resource indicated by the dynamic grant can be used to transmit the carrier until the A-IoT device finishes transmitting the message.

[0155] For example, if a DAPS handover, since the carrier node maintains the connection with the source base station and the target base station at the same time, the carrier node can continue to use the existing configured grant or dynamic grant indicated resource until receiving the new grant information (e.g., configured grant or dynamic grant) sent by the source base station or the target base station and taking effect.

[0156] For example, the source base station can forward the information of the resource (e.g., the existing configured grant indicated resource of the carrier node) required for A-IoT communication of the carrier node, the ongoing A-IoT service, the characteristics of the A-IoT service, etc. to the target base station. The carrier node can carry the new grant information allocated by the target base station for the carrier node in the received handover command. After the carrier node receives the handover command: 1) the carrier node can continue to send the carrier on the resource of the original grant information to support the A-IoT device based on the carrier to complete the current ongoing D2R transmission, and then release the resource indicated by the original grant information and use the resource indicated by the new grant information allocated by the target base station; 2) the carrier node immediately releases the resource indicated by the original grant information and starts to use the resource indicated by the new grant information allocated by the target base station; 3) in order to avoid the interruption of the inventory process, the carrier node releases the resource indicated by the original grant information after completing the current inventory and uses the resource indicated by the new grant information allocated by the target base station to send the carrier.

[0157] In some implementations, for the case that the carrier node or the intermediate node is in the HO state, the association relationship between the carrier node and the intermediate node can be released by the carrier node and the intermediate node after completing the handover. Here, the carrier node and the intermediate node are different devices.

[0158] It can be understood that the above-mentioned D2R message can include, for example, A-IoT Msg 1 or Msg 3, and the signal transmission process carrying the D2R message (e.g., A-IoT Msg 1 or Msg 3) can be referred to as D2R transmission. Similarly, the above-mentioned R2D message can include, for example, Msg 2, and the signal transmission process carrying the R2D message (e.g., Msg 2) can be referred to as D2R transmission. In addition, after sending A-IoT Msg 1, Msg 2 and Msg 3, it can be referred to as completing a round of inventory. That is, a round of inventory needs to complete the transmission of at least one R2D message and at least one D2R message, or in other words, a round of inventory needs to go through at least one R2D transmission and at least one D2R transmission.

[0159] Embodiment 3

[0160] In some implementations, the first device continues the ongoing A-IoT transmission based on the current transmit power; and / or, the first device determines the transmit power used by the next A-IoT transmission of the A-IoT transmission based on a predetermined power control parameter.

[0161] For the first device in the RLF state or the HO state, in order to avoid affecting the receiving end, the first device can continue to perform the ongoing A-IoT transmission based on the current transmit power. For example, the intermediate node in the RLF state or the HO state continues to use the current transmit power to complete the ongoing R2D transmission; the carrier node in the RLF state or the HO state continues to use the current transmit power to transmit the carrier to assist the A-IoT device based on the carrier to complete the ongoing D2R transmission.

[0162] The predetermined power control parameter can be configured or pre-configured by the serving cell, or by the source cell or the target cell (in the handover state). The first device can determine the power used by the new A-IoT transmission according to the power control parameter. For example, the intermediate node can use the current transmit power to complete the ongoing R2D transmission, and then determine the transmit power to be used by the next R2D transmission based on the power control parameter; the carrier node can continue to use the current transmit power to transmit the carrier to assist the A-IoT device based on the carrier to complete the ongoing D2R transmission, and then determine the transmit power to be used by the next carrier transmission based on the power control parameter.

[0163] Embodiment 4

[0164] According to the frequency band adopted, the A-IoT transmission can adopt the downlink timing or the uplink timing of the serving cell.

[0165] In some implementations, the A-IoT transmission of the first device in the uplink frequency band is based on the uplink timing with timing advance (TA); the A-IoT transmission of the first device in the downlink frequency band, the guard frequency band between the uplink frequency band and the downlink frequency band, or the dedicated frequency band is based on the downlink timing. If the first device is an intermediate node, the A-IoT transmission refers to the transmission of R2D message or R2D transmission; if the first device is a carrier node, the A-IoT transmission refers to the carrier transmission.

[0166] For the uplink frequency band, the first device needs to perform uplink timing. For example, for the intermediate node, in order to reduce the interference caused by A-IoT transmission to uplink or downlink reception, if the intermediate node transmits the R2D message in the uplink frequency band, the intermediate node should use uplink timing with TA when transmitting the R2D message. For another example, for the carrier node, in order to reduce the interference caused by A-IoT transmission to uplink or downlink reception, if the carrier node transmits the carrier in the uplink frequency band, wherein in the case that the carrier node is controlled by the base station, the carrier node should transmit the carrier using uplink timing with TA, which is the TA indicated to the carrier node by the base station; in the case that the carrier node is controlled by the intermediate node: 1) if the carrier node has downlink reception capability, the carrier node should determine the time of transmitting the carrier according to the downlink timing and the TA of the intermediate node, that is, the intermediate control node should indicate its own TA value when indicating the carrier node to transmit the carrier; 2) if the control information of the intermediate node controlling the carrier node ends at time T, the carrier node starts to transmit the carrier at time T+D, wherein the unit of D may be, for example, OFDM symbol, time slot, or absolute time unit (for example, millisecond), and the value of D may be, for example, indicated by the control information, or a specific value pre-agreed or configured by the network. The value of D may be, for example, related to the processing time of the control information after the carrier node receives the control information.

[0167] For the downlink frequency band, the guard frequency band, and the dedicated frequency band, since there is downlink transmission, the first device needs to perform downlink timing. For example, for the intermediate node, if the intermediate node performs R2D transmission in the downlink frequency band, the downlink timing should be determined according to the synchronization signal transmitted by the base station, and if the intermediate node performs R2D transmission in the guard frequency band or the dedicated frequency band, the downlink timing should be determined according to the synchronization signal transmitted by the base station controlling the intermediate node in other frequency bands other than the guard frequency band or the dedicated frequency band. For another example, for the carrier node, if the carrier node performs carrier transmission in the downlink frequency band, the downlink timing should be determined according to the synchronization signal transmitted by the base station, and if the carrier node performs carrier transmission in the guard frequency band or the dedicated frequency band, the downlink timing should be determined according to the synchronization signal transmitted by the base station controlling the carrier node in other frequency bands other than the guard frequency band or the dedicated frequency band.

[0168] The second device can send the first device a time advance TA, and the first device determines the uplink timing corresponding to the uplink frequency band based on the TA.

[0169] The second device can send a synchronization signal, for example, a synchronization signal block (SS / PBCH block, SSB), to the first device, and the first device determines the downlink timing corresponding to the downlink frequency band, the guard frequency band or the dedicated frequency band by receiving and detecting the SSB.

[0170] It should be noted that the above-mentioned embodiment 1, embodiment 2, embodiment 3 and embodiment 4 can be implemented independently or can be combined with each other. For example, the resource maintained, released or switched by the first device in the special state (for example, the RLF state or the HO state) in embodiment 2 can be indicated by the authorization information, which can be indicated by the manner of embodiment 1 or can not be indicated by the manner of embodiment 1. For another example, the power control manner in embodiment 3 can be the power control manner in the special state (for example, the RLF state or the HO state) described in embodiment 2. For another example, the determination manner of the uplink timing and the downlink timing in embodiment 4 can be independently implemented or can be combined with embodiment 1 and / or embodiment 2.

[0171] In the embodiments of the present application, the first device can determine the corresponding downlink timing and uplink timing based on the frequency band used for A-IoT transmission, and / or indicate the resource used for A-IoT transmission to the first device by using the authorization information and through a suitable manner, and / or reasonably use the resource indicated by the authorization information in the special state, and / or determine a suitable transmission power, and the like. The above operations not only realize the A-IoT communication between the first device (for example, the intermediate node or the carrier node) and the third device (for example, the A-IoT device), but also reduce the interference of A-IoT transmission on uplink and downlink reception or the interference of A-IoT transmission on A-IoT reception, and reduce the interruption of A-IoT transmission.

[0172] The method embodiments of the present application are described in detail above in combination with FIG. 1 to FIG. 10, and the device embodiments of the present application are described in detail below in combination with FIG. 11 to FIG. 13. It should be understood that the description of the method embodiments corresponds to the description of the device embodiments, and therefore, the parts not described in detail can be referred to the method embodiments.

[0173] Fig. 11 is a structural schematic diagram of a communication device provided by an embodiment of the present application. The communication device shown in Fig. 11 is a first device. As shown in Fig. 11, the communication device 1100 can include a transceiver unit 1110. The transceiver unit 1110 is configured to perform D2R transmission with a second device based on first information, wherein the first information includes one or more of the following: information of a carrier frequency; information of a chip length; information of an SFS; information of a modulation mode.

[0174] In some embodiments, the first device receives authorization information sent by the second device, wherein the authorization information indicates resources for A-IoT communication between the first device and a third device.

[0175] In some embodiments, the authorization information includes a configured grant or a dynamic grant, and the configured grant is static or semi-static.

[0176] In some embodiments, resources of an A-IoT paging message in the A-IoT communication are indicated by first authorization information, and resources of a plurality of messages after the A-IoT paging message are indicated by the following manners: the resources of the plurality of messages are indicated by second authorization information; or resources of at least part of the plurality of messages are indicated by different authorization information, wherein the plurality of messages include one or more of the following: a triggering message of A-IoT Msg 1, A-IoT Msg 1, Msg 2 and Msg 3.

[0177] In some embodiments, resources of the A-IoT paging message are indicated by first authorization information, and resources of the plurality of messages are indicated by second authorization information, wherein the resources indicated by the second configured grant are located between two consecutive resources indicated by the first configured grant.

[0178] In some embodiments, resources of the A-IoT paging message are indicated by first authorization information, and resources of the plurality of messages are indicated by second authorization information, wherein the plurality of messages include a triggering message of A-IoT Msg 1, and a time interval between the resources indicated by the first authorization information and the resources indicated by the second authorization information is greater than a minimum time interval between two consecutive R2D transmissions; or the plurality of messages do not include a triggering message of A-IoT Msg 1, and a time interval between the resources indicated by the first authorization information and the resources indicated by the second authorization information is greater than a minimum time interval between R2D transmission and its associated D2R transmission.

[0179] In some embodiments, the resource of at least part of the plurality of messages is indicated by different authorization information, including: the authorization message is a configured grant, and the resource of the plurality of messages is respectively indicated by different authorization information; or, the authorization message is a dynamic grant, and the resource of part of the plurality of messages is indicated by different authorization information.

[0180] In some embodiments,

[0181] The authorization message is a configured grant, and the resource of the plurality of messages is respectively indicated by different authorization information; or,

[0182] The authorization message is a dynamic grant, and the dynamic grant is used to indicate the resource of at least one message in the plurality of messages.

[0183] In some embodiments, the first device is an intermediate node of the A-IoT communication, and the communication device further includes a processing unit 1120 configured to: in a case where the frequency domain resource is located in the dedicated frequency band or the guard frequency band, determine to perform a first operation for the dedicated frequency band and the guard frequency band; and in a case where the frequency domain resource is located in the uplink frequency band or the downlink frequency band, determine to perform a second operation for the uplink frequency band and the downlink frequency band.

[0184] In some embodiments, in a case where the intermediate node is in a radio link failure (RLF) state, if the authorization information is a configured grant, the first operation includes: continuing to use the frequency domain resource for R2D transmission until a radio resource control (RRC) reestablishment is completed; or, continuing to use the frequency domain resource for R2D transmission and releasing the frequency domain resource after the RRC reestablishment fails.

[0185] In some embodiments, in a case where the intermediate node is in a radio link failure (RLF) state, if the authorization information is a dynamic grant, the first operation includes: continuing to use the frequency domain resource for R2D transmission until a radio resource control (RRC) reestablishment is completed; or, continuing to use the frequency domain resource for R2D transmission and releasing the frequency domain resource after the RRC reestablishment fails; or, releasing the frequency domain resource after a current R2D transmission on the frequency domain resource is completed; or, releasing the frequency domain resource that has not been used for R2D transmission; or, releasing the frequency domain resource after a current R2D message on the frequency domain resource is transmitted.

[0186] In some embodiments, in a case where the intermediate node is in an RLF state, the second operation includes: immediately releasing the frequency domain resource; or, releasing the frequency domain resource after a current R2D message on the frequency domain resource is transmitted.

[0187] In some implementations, in a case that the intermediate node is in a handover (HO) state, if the authorization information is a configured grant, the first operation and / or the second operation comprises: continuing to use the frequency domain resource for R2D transmission until receiving authorization information sent by a target base station; or, continuing to use the frequency domain resource for R2D transmission and releasing the frequency domain resource after a handover failure; or, in a case that the HO is a dual active stack (DAPS) handover, continuing to use the frequency domain resource for R2D transmission until receiving authorization information sent by a source base station or the target base station; or, releasing the frequency domain resource after completing ongoing R2D transmission on the frequency domain resource and using a resource authorized by the target base station for the intermediate node for R2D transmission; or, immediately releasing the frequency domain resource and using a resource authorized by the target base station for the intermediate node for R2D transmission; or, releasing the frequency domain resource after completing inventorying for the third device.

[0188] In some implementations, in a case that the intermediate node is in a handover (HO) state, if the authorization information is a dynamic grant, the first operation and / or the second operation comprises: continuing to use the frequency domain resource for R2D transmission until receiving authorization information sent by a target base station; or, continuing to use the frequency domain resource for R2D transmission and releasing the frequency domain resource after a handover failure; or, in a case that the HO is a DAPS handover, continuing to use the frequency domain resource for R2D transmission until receiving authorization information sent by a source base station or the target base station; or, releasing the frequency domain resource after completing ongoing R2D transmission on the frequency domain resource and using a resource authorized by the target base station for the intermediate node for R2D transmission; or, immediately releasing the frequency domain resource and using a resource authorized by the target base station for the intermediate node for R2D transmission; releasing the frequency domain resource that has not been used for R2D transmission; or, releasing the frequency domain resource after sending of an R2D message being sent or to be sent on the frequency domain resource is completed; or, releasing the frequency domain resource after completing inventorying for the third device.

[0189] In some implementations, the R2D message comprises a Msg 2 being sent; or, the R2D message comprises a Msg 2 to be sent, and an A-IoT Msg 1 corresponding to the Msg 2 has been sent.

[0190] In some embodiments, the first device is a carrier node of the A-IoT communication, and the communication device further comprises a processing unit configured to: determine to perform a third operation for the dedicated frequency band or the guard frequency band if the frequency domain resource is located in the dedicated frequency band or the guard frequency band; and determine to perform a fourth operation for the uplink frequency band or the downlink frequency band if the frequency domain resource is located in the uplink frequency band or the downlink frequency band.

[0191] In some embodiments, the third operation comprises: continuing to use the frequency domain resource for carrier transmission until RRC reestablishment is completed if the carrier node is in an RLF state and the grant information is a configured grant; or continuing to use the frequency domain resource for carrier transmission and releasing the frequency domain resource after RRC reestablishment fails.

[0192] In some embodiments, the third operation comprises: continuing to use the frequency domain resource for carrier transmission until RRC reestablishment is completed if the carrier node is in an RLF state and the grant information is a dynamic grant; or continuing to use the frequency domain resource for carrier transmission and releasing the frequency domain resource after RRC reestablishment fails; releasing the frequency domain resource after assisting the third device to complete an ongoing D2R transmission; or releasing the frequency domain resource that has not been used for carrier transmission; or releasing the frequency domain resource after assisting the third device to transmit a D2R message that is being transmitted or to be transmitted.

[0193] In some embodiments, the fourth operation comprises: immediately releasing the frequency domain resource if the carrier node is in an RLF state; or releasing the frequency domain resource after assisting the third device to transmit a D2R message that is being transmitted or to be transmitted.

[0194] In some implementations, in the case that the carrier node is in the HO state, if the authorization information is a configured grant, the third operation and / or the fourth operation comprises: continuing to use the frequency domain resource for carrier transmission until receiving the authorization information sent by the target base station; or, continuing to use the frequency domain resource for carrier transmission and releasing the frequency domain resource after the handover fails; or, in the case that the HO is a DAPS handover, continuing to use the frequency domain resource for carrier transmission until receiving the authorization information sent by the source base station or the target base station; or, releasing the frequency domain resource after assisting the third device to complete the ongoing D2R transmission and using the resource authorized by the target base station for the carrier node for carrier transmission; or, immediately releasing the frequency domain resource and using the resource authorized by the target base station for the carrier node for carrier transmission; or, releasing the frequency domain resource after completing the inventory for the third device and using the resource authorized by the target base station for the carrier node for carrier transmission.

[0195] In some implementations, in the case that the carrier node is in the HO state, if the authorization information is a dynamic grant, the third operation and / or the fourth operation comprises: continuing to use the frequency domain resource for carrier transmission until receiving the authorization information sent by the target base station; or, continuing to use the frequency domain resource for carrier transmission and releasing the frequency domain resource after the handover fails; or, in the case that the HO is a DAPS handover, continuing to use the frequency domain resource for carrier transmission until receiving the authorization information sent by the source base station or the target base station; or, releasing the frequency domain resource after assisting the third device to complete the ongoing D2R transmission and using the resource authorized by the target base station for the carrier node for carrier transmission; or, immediately releasing the frequency domain resource and using the resource authorized by the target base station for the carrier node for carrier transmission; or, releasing the frequency domain resource after completing the inventory for the third device and using the resource authorized by the target base station for the carrier node for carrier transmission; or, releasing the frequency domain resource that has not been used for carrier transmission; or, releasing the frequency domain resource after assisting the third device to send the D2R message that is being sent or will be sent.

[0196] In some implementations, in the case that the carrier node is in the HO state, the association relationship between the carrier node and the intermediate node is released by the carrier node and the intermediate node after the handover is completed.

[0197] In some implementations, the D2R message comprises an A-IoT Msg 1 or Msg 3 that is being sent; or, the D2R message comprises a Msg 3 that will be sent, and an A-IoT Msg 1 corresponding to the Msg 3 has been sent.

[0198] In some embodiments, the first device performs the A-IoT transmission in the uplink frequency band based on uplink timing with a time advance (TA); and the first device performs the A-IoT transmission in the downlink frequency band, the guard frequency band between the downlink frequency band and the uplink frequency band, or the dedicated frequency band based on downlink timing.

[0199] In some embodiments, the first device continues to perform the ongoing A-IoT transmission based on the current transmit power; and / or the first device determines, based on a predetermined power control parameter, a transmit power used by a next A-IoT transmission of the A-IoT transmission.

[0200] In some embodiments, the first device is an intermediate node or a carrier node in the A-IoT communication, the second device is a network device, and the third device is an A-IoT device.

[0201] In some embodiments, the intermediate node and the carrier node are the same device or different devices; and / or the carrier node is controlled by the network device or controlled by the intermediate node.

[0202] It can be understood that the transceiver unit 1110 can be the transceiver 1330, and the processing unit 1120 can be the processor 1310, for example. In addition, the communication device 1100 can further include the memory 1320, as an option, as shown in FIG. 13.

[0203] FIG. 12 is a structural diagram of a communication device provided by an embodiment of the present application. The communication device shown in FIG. 12 is a second device. As shown in FIG. 12, the communication device 1200 can include a transceiver unit 1210. The transceiver unit 1210 is configured to send, to a first device, authorization information, where the authorization information indicates resources used for an ambient Internet of Things (A-IoT) communication between the first device and a third device.

[0204] In some embodiments, the authorization information includes a configured grant or a dynamic grant, and the configured grant is static or semi-static.

[0205] In some embodiments, resources of an A-IoT paging message in the A-IoT communication are indicated by first authorization information, and resources of a plurality of messages after the A-IoT paging message are indicated in the following manners: the resources of the plurality of messages are indicated by second authorization information simultaneously; or resources of at least part of the plurality of messages are indicated by different authorization information; and the plurality of messages include one or more of the following: a triggering message of A-IoT Msg 1, A-IoT Msg 1, Msg 2, and Msg 3.

[0206] In some embodiments, the resource of the A-IoT paging message is indicated by first grant information, and the resources of the plurality of messages are indicated by second grant information simultaneously, wherein the resource indicated by the second configured grant indication is located between two continuous resources indicated by the first configured grant indication.

[0207] In some embodiments, the resource of the A-IoT paging message is indicated by first grant information, and the resources of the plurality of messages are indicated by second grant information simultaneously, wherein the plurality of messages include a triggering message of A-IoT Msg 1, and a time interval between the resource indicated by the first grant information and the resource indicated by the second grant information is greater than a minimum time interval between two consecutive R2D transmissions; or the plurality of messages do not include a triggering message of A-IoT Msg 1, and a time interval between the resource indicated by the first grant information and the resource indicated by the second grant information is greater than a minimum time interval between R2D transmission and its associated D2R transmission.

[0208] In some embodiments, the resources of at least part of the plurality of messages are indicated by different grant information, including: the grant message is a configured grant, and the resources of the plurality of messages are indicated by different grant information respectively; or the grant message is a dynamic grant, and the resources of part of the plurality of messages are indicated by different grant information.

[0209] In some embodiments, the resource indicated by the grant information includes a frequency domain resource, and the frequency domain resource is located in one or more of the following frequency bands: a dedicated frequency band for the A-IoT communication, an uplink frequency band, a downlink frequency band, and a guard frequency band between the uplink frequency band and the downlink frequency band.

[0210] In some embodiments, the communication device further includes: the second device sends a time advance TA to the first device; and wherein the A-IoT transmission of the first device in the uplink frequency band is based on uplink timing with the time advance TA.

[0211] In some embodiments, the transceiver 1210 is further configured to: send a synchronization signal to the first device; and wherein the A-IoT transmission of the first device in the downlink frequency band, the guard frequency band between the uplink frequency band and the downlink frequency band, or the dedicated frequency band is based on downlink timing determined based on the synchronization signal.

[0212] In some embodiments, the first device is an intermediate node or a carrier node in the A-IoT communication, the second device is a network device, and the third device is an A-IoT device.

[0213] In some implementations, the intermediate node and the carrier node are the same device or different devices; and / or, the carrier node is controlled by the network device or controlled by the intermediate node.

[0214] It can be understood that the transceiver unit 1210 can be, for example, the transceiver 1330. In addition, the communication device 1200 can also optionally include the processor 1310 and the memory 1320, as shown in FIG. 13.

[0215] FIG. 13 is a schematic structural diagram of an apparatus for communication according to an embodiment of the present application. The dashed line shown in FIG. 13 indicates that the unit or module is optional. The apparatus 1300 can be used to implement the method described in the above method embodiments. The apparatus 1300 can be, for example, a chip, a first device or a second device.

[0216] The apparatus 1300 can include one or more processors 1310. The processor 1310 can support the apparatus 1300 to implement the method described in the above method embodiments. The processor 1310 can be a general purpose processor or a dedicated processor. For example, the processor 1310 can be a central processing unit (CPU). Alternatively, the processor 1310 can also be other general purpose processors, digital signal processors (DSPs), application specific integrated circuits (ASICs), field programmable gate arrays (FPGAs) or other programmable logic devices, discrete gates or transistor logic components, discrete hardware components, etc. The general purpose processor can be a microprocessor or can be any conventional processor.

[0217] The apparatus 1300 can also include one or more memories 1320. The memory 1320 stores programs, which can be executed by the processor 1310, so that the processor 1310 performs the method described in the above method embodiments. The memory 1320 can be independent of the processor 1310, or can also be integrated in the processor 1310.

[0218] The apparatus 1300 can also include a transceiver 1330. The processor 1310 can communicate with other devices or chips through the transceiver 1330. For example, the processor 1310 can perform data transceiving with other devices or chips through the transceiver 1330.

[0219] The embodiments of the present application further provide a communication system. The communication system comprises the first device and the second device. In some implementations, the system further comprises other devices interacting with the first device and the second device.

[0220] The embodiments of the present application further provide a computer readable storage medium for storing a program. The computer readable storage medium can be applied to the first device or the second device provided by the embodiments of the present application, and the program causes the computer to execute the method performed by the first device or the second device in the embodiments of the present application.

[0221] The embodiments of the present application further provide a computer program product. The computer program product comprises a program. The computer program product can be applied to the first device or the second device provided by the embodiments of the present application, and the program causes the computer to execute the method performed by the first device or the second device in the embodiments of the present application.

[0222] The embodiments of the present application further provide a computer program. The computer program can be applied to the first device or the second device provided by the embodiments of the present application, and the computer program causes the computer to execute the method performed by the first device or the second device in the embodiments of the present application.

[0223] It should be understood that the terms "system" and "network" can be used interchangeably in the embodiments of the present application. In addition, the terms used in the present application are only used to explain the specific embodiments of the present application, and are not intended to limit the present application. The terms "first", "second", "third", and "fourth" and the like in the specification and claims of the present application and the drawings are used to distinguish different objects, and are not used to describe a particular order. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion.

[0224] In the embodiments of the present application, the "indication" mentioned can be direct indication, or indirect indication, or can be a representation of having a correlation relationship. For example, A indicates B, which can mean that B can be obtained by A, for example, B can be obtained by A; or it can mean that A indirectly indicates B, for example, A indicates C, and B can be obtained by C; or it can mean that A and B have a correlation relationship.

[0225] In the embodiments of the present application, "B corresponding to A" means that B is associated with A, and B can be determined according to A. However, it should also be understood that determining B according to A does not mean that B is determined only according to A, but B can also be determined according to A and / or other information.

[0226] In the embodiments of the present application, the term "corresponding" can mean that there is a direct or indirect corresponding relationship between the two, or can mean that there is a correlation relationship between the two, or can mean the relationship of indication and being indicated, configuration and being configured, etc.

[0227] In embodiments of the present application, "predefined" or "preconfigured" can be implemented by pre-storing corresponding codes, tables or other means for indicating relevant information in devices (e.g., including the first device and the second device), and the present application does not limit the specific implementation manner thereof. For example, the predefinition can refer to definition in a protocol.

[0228] In embodiments of the present application, the "protocol" can refer to a standard protocol in the communication field, which can include the LTE protocol, the NR protocol and relevant protocols applied in future communication systems, and the present application does not limit the same.

[0229] In embodiments of the present application, the term "and / or" merely describes an association relationship of associated objects, which can represent three relationships, for example, A and / or B can represent the following three cases: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in the present application generally represents an "or" relationship between the front and rear associated objects.

[0230] In various embodiments of the present application, the size of the serial number of the above processes does not mean the order of execution, and the execution order of the processes should be determined according to its function and inherent logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0231] In several embodiments provided by the present application, it should be understood that the disclosed system, device and method can be implemented by other manners. For example, the device embodiments described above are merely illustrative, for example, the division of the units is merely a logical function division, and actual implementation can have another division manner, for example, a plurality of units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the coupling or direct coupling or communication connection between the displayed or discussed objects can be indirect coupling or communication connection through some interfaces, devices or units, which can be electrical, mechanical or other forms.

[0232] The units described as separate components can or can not be physically separate, and the components displayed as units can or can not be physical units, i.e., they can be located in one place or distributed on a plurality of network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the embodiments of the present application.

[0233] In addition, each functional unit in each embodiment of the present application can be integrated in one processing unit, or each unit can exist physically, or two or more units can be integrated in one unit.

[0234] In the above embodiments, all or part of the embodiments can be implemented by software, hardware, firmware or any combination thereof. When implemented by software, all or part of the embodiments can be implemented in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, all or part of the processes or functions described in the embodiments of the present application are generated. The computer can be a general purpose computer, a special purpose computer, a computer network, or other programmable devices. The computer instructions can be stored in a computer readable storage medium or transmitted from one computer readable storage medium to another computer readable storage medium, for example, the computer instructions can be transmitted from one website, computer, server or data center to another website, computer, server or data center through wired (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.) mode. The computer readable storage medium can be any available medium that can be read by a computer or a data storage device such as a server, data center and the like integrated with one or more available media sets. The available media can be magnetic media (such as floppy disk, hard disk, magnetic tape), optical media (such as digital video disc (DVD)) or semiconductor media (such as solid state disk (SSD)) and the like.

[0235] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art can easily think of changes or replacements within the technical range disclosed in the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A method of wireless communication, comprising: Comprise: A first device receives authorization information sent by a second device, wherein the authorization information indicates resources for an ambient Internet of Things (A-IoT) communication between the first device and a third device.

2. The method of claim 1, wherein, The authorization information comprises a configured grant or a dynamic grant, and the configured grant is static or semi-static.

3. The method according to claim 1 or 2, characterized in that, The resources of an A-IoT paging message in the A-IoT communication are indicated by first authorization information, and the resources of a plurality of messages after the A-IoT paging message are indicated by the following manners: The resources of the plurality of messages are indicated by second authorization information at the same time; or The resources of at least part of the plurality of messages are indicated by different authorization information; Wherein, the plurality of messages comprise one or more of the following: a trigger message of A-IoT Msg 1, A-IoT Msg 1, Msg 2 and Msg 3.

4. The method of claim 3, wherein, The resources of the A-IoT paging message are indicated by first authorization information, and the resources of the plurality of messages are indicated by second authorization information at the same time, wherein the resources indicated by the second configured grant are located between two consecutive resources indicated by the first configured grant.

5. The method according to claim 3 or 4, characterized in that, The resources of the A-IoT paging message are indicated by first authorization information, and the resources of the plurality of messages are indicated by second authorization information at the same time, Wherein, the plurality of messages comprise a trigger message of A-IoT Msg 1, and a time interval between the resources indicated by the first authorization information and the resources indicated by the second authorization information is greater than a minimum time interval between two consecutive Reader-to-Device (R2D) transmissions; or The plurality of messages do not comprise a trigger message of A-IoT Msg 1, and a time interval between the resources indicated by the first authorization information and the resources indicated by the second authorization information is greater than a minimum time interval between a R2D transmission and a Device-to-Reader (D2R) transmission associated with the R2D transmission.

6. The method according to any one of claims 3 to 5, characterized in that, The resources of at least part of the plurality of messages are indicated by different authorization information, comprising: The authorization message is a configured grant, and the resources of the plurality of messages are respectively indicated by different authorization information; or The authorization message is a dynamic grant, and the dynamic grant is used to indicate the resources of at least one message in the plurality of messages.

7. The method according to any one of claims 1 to 6, characterized in that, The resources indicated by the authorization information comprise frequency domain resources, and the frequency domain resources are located in one or more of the following frequency bands: a dedicated frequency band for the A-IoT communication, an uplink frequency band, a downlink frequency band, and a guard frequency band between the uplink frequency band and the downlink frequency band.

8. The method of claim 7, wherein, The first device is an intermediate node of the A-IoT communication, and the method further comprises: In a case where the frequency domain resources are located in the dedicated frequency band or the guard frequency band, the intermediate node performs a first operation for the dedicated frequency band and the guard frequency band; In a case where the frequency domain resources are located in the uplink frequency band or the downlink frequency band, the intermediate node performs a second operation for the uplink frequency band and the downlink frequency band.

9. The method of claim 8, wherein, In a case where the intermediate node is in a Radio Link Failure (RLF) state, if the authorization information is a configured grant, the first operation comprises: continuing the R2D transmission using the frequency domain resource until a radio resource control (RRC) reestablishment is completed; or continuing the R2D transmission using the frequency domain resource and releasing the frequency domain resource after the RRC reestablishment fails.

10. The method according to claim 8 or 9, characterized in that, In a case where the intermediate node is in a radio link failure (RLF) state, the first operation includes: continuing the R2D transmission using the frequency domain resource until an RRC reestablishment is completed; or continuing the R2D transmission using the frequency domain resource and releasing the frequency domain resource after the RRC reestablishment fails; or releasing the frequency domain resource after the R2D transmission in progress on the frequency domain resource is completed; or releasing the frequency domain resource that has not been used for the R2D transmission; or releasing the frequency domain resource after a R2D message being transmitted or to be transmitted on the frequency domain resource is transmitted.

11. The method according to any one of claims 8 to 10, characterized in that, In a case where the intermediate node is in an RLF state, the second operation includes: immediately releasing the frequency domain resource; or releasing the frequency domain resource after a R2D message being transmitted or to be transmitted on the frequency domain resource is transmitted.

12. The method according to any one of claims 8 to 11, characterized in that, In a case where the intermediate node is in a handover (HO) state, if the grant information is a configured grant, the first operation and / or the second operation includes: continuing the R2D transmission using the frequency domain resource until receiving grant information sent by a target base station; or continuing the R2D transmission using the frequency domain resource and releasing the frequency domain resource after the handover fails; or in a case where the HO is a dual active stack (DAPS) handover, continuing the R2D transmission using the frequency domain resource until receiving grant information sent by a source base station or the target base station; or releasing the frequency domain resource after the R2D transmission in progress on the frequency domain resource is completed, and performing the R2D transmission using a resource granted by the target base station for the intermediate node; or immediately releasing the frequency domain resource, and performing the R2D transmission using a resource granted by the target base station for the intermediate node; or releasing the frequency domain resource after an inventory for the third device is completed.

13. The method according to any one of claims 8 to 12, characterized in that, In a case where the intermediate node is in an HO state, if the grant information is a dynamic grant, the first operation and / or the second operation includes: continuing the R2D transmission using the frequency domain resource until receiving grant information sent by a target base station; or continuing the R2D transmission using the frequency domain resource and releasing the frequency domain resource after the handover fails; or in a case where the HO is a DAPS handover, continuing the R2D transmission using the frequency domain resource until receiving grant information sent by a source base station or the target base station; or releasing the frequency domain resource after the R2D transmission in progress on the frequency domain resource is completed, and performing the R2D transmission using a resource granted by the target base station for the intermediate node; or immediately releasing the frequency domain resource, and performing the R2D transmission using a resource granted by the target base station for the intermediate node; or releasing the frequency domain resource which is not used for R2D transmission; or releasing the frequency domain resource after sending a D2R message which is being sent or to be sent by the third device; or releasing the frequency domain resource after completing inventory for the third device.

14. The method of any one of claims 10, 11 and 13, wherein the R2D message comprises a Msg 2 being sent; or the R2D message comprises a Msg 2 to be sent, and an A-IoT Msg 1 corresponding to the Msg 2 has been sent. The first device is a carrier node of the A-IoT communication, and the method further comprises: in a case where the frequency domain resource is located in the dedicated frequency band or the guard frequency band, the carrier node performing a third operation for the dedicated frequency band or the guard frequency band; 15. The method of claim 14, wherein, in a case where the frequency domain resource is located in the uplink frequency band or the downlink frequency band, the carrier node performing a fourth operation for the uplink frequency band or the downlink frequency band. in a case where the carrier node is in an RLF state, if the authorization information is a configured grant, the third operation comprises: continuing to use the frequency domain resource for carrier transmission until RRC reestablishment is completed; or 16. The method of claim 15, wherein, continuing to use the frequency domain resource for carrier transmission, and releasing the frequency domain resource after RRC reestablishment fails. in a case where the carrier node is in an RLF state, if the authorization information is a dynamic grant, the third operation comprises: continuing to use the frequency domain resource for carrier transmission until RRC reestablishment is completed; or 17. The method according to claim 15 or 16, characterized in that, continuing to use the frequency domain resource for carrier transmission, and releasing the frequency domain resource after RRC reestablishment fails. releasing the frequency domain resource after assisting the third device to complete an ongoing D2R transmission; or releasing the frequency domain resource which is not used for carrier transmission; or releasing the frequency domain resource after assisting the third device to send a D2R message which is being sent or to be sent. in a case where the carrier node is in an RLF state, the fourth operation comprises: immediately releasing the frequency domain resource; or 18. The method of any one of claims 15-17, wherein, releasing the frequency domain resource after assisting the third device to send a D2R message which is being sent or to be sent. in a case where the carrier node is in an HO state, if the authorization information is a configured grant, the third operation and / or the fourth operation comprises: continuing to use the frequency domain resource for carrier transmission until authorization information sent by a target base station is received; or 19. The method according to any one of claims 15 to 18, characterized in that, continuing to use the frequency domain resource for carrier transmission, and releasing the frequency domain resource after handover fails; or in a case where the HO handover is a DAPS handover, continuing to use the frequency domain resource for carrier transmission until authorization information sent by a source base station or a target base station is received; or releasing the frequency domain resource after assisting the third device to complete an ongoing D2R transmission, and using a resource authorized by the target base station for the carrier node for carrier transmission; or ​ ​ release the frequency domain resource immediately and perform carrier transmission using the resource authorized by the target base station for the carrier node; or release the frequency domain resource after completing the inventory for the third device.

20. The method of any one of claims 15-19, wherein, In the case that the carrier node is in the HO state, if the authorization information is dynamic authorization, the third operation and / or the fourth operation comprises: continue to perform carrier transmission using the frequency domain resource until receiving the authorization information sent by the target base station; or continue to perform carrier transmission using the frequency domain resource and release the frequency domain resource after the HO fails; or In the case that the HO is DAPS HO, continue to perform carrier transmission using the frequency domain resource until receiving the authorization information sent by the source base station or the target base station; or release the frequency domain resource after assisting the third device to complete the ongoing D2R transmission and perform carrier transmission using the resource authorized by the target base station for the carrier node; or release the frequency domain resource immediately and perform carrier transmission using the resource authorized by the target base station for the carrier node; or release the frequency domain resource after completing the inventory for the third device. release the frequency domain resource that has not been used for carrier transmission; or release the frequency domain resource after assisting the third device to send the D2R message that is being sent or will be sent.

21. The method of claim 20, wherein, In the case that the carrier node is in the HO state, the association relationship between the carrier node and the intermediate node is released by the carrier node and the intermediate node after completing the HO.

22. The method of any one of claims 17, 18 and 20, wherein the D2R message comprises an A-IoT Msg 1 or Msg 3 that is being sent; or the D2R message comprises a Msg 3 that will be sent, and an A-IoT Msg 1 corresponding to the Msg 3 has been sent.

23. The method of any one of claims 1 to 22, wherein the A-IoT transmission of the first device at the uplink frequency band is based on uplink timing with a time advance (TA); and the A-IoT transmission of the first device at the downlink frequency band, the guard frequency band between the downlink frequency band and the uplink frequency band, or the dedicated frequency band is based on downlink timing.

24. The method of any one of claims 1 to 23, wherein the first device continues to perform the ongoing A-IoT transmission based on a current transmit power; and / or the first device determines a transmit power used by the next A-IoT transmission of the A-IoT transmission based on a predetermined power control parameter.

25. The method of any one of claims 1 to 24, wherein, the first device is an intermediate node or a carrier node in the A-IoT communication, and the second device is a network device, and the third device is an A-IoT device.

26. The method of claim 25, wherein the intermediate node and the carrier node are the same device or different devices; and / or the carrier node is controlled by the network device or controlled by the intermediate node.

27. A method of wireless communication, the method comprising: comprises: The second device sends authorization information to the first device, where the authorization information indicates resources for A-IoT communication between the first device and a third device.

28. The method of claim 27, wherein, The authorization information includes a configured grant or a dynamic grant, and the configured grant is static or semi-static.

29. The method of claim 27 or 28, wherein, Resources of an A-IoT paging message in the A-IoT communication are indicated by first authorization information, and resources of a plurality of messages after the A-IoT paging message are indicated by the following manners: The resources of the plurality of messages are indicated by second authorization information simultaneously; or Resources of at least part of the plurality of messages are indicated by different authorization information. The plurality of messages include one or more of the following: a trigger message of A-IoT Msg 1, A-IoT Msg 1, Msg 2, and Msg 3.

30. The method of claim 29, wherein, The resources of the A-IoT paging message are indicated by first authorization information, and the resources of the plurality of messages are indicated by second authorization information simultaneously, where the resources indicated by the second configured grant are located between two consecutive resources indicated by the first configured grant.

31. The method of claim 29 or 30, wherein, The resources of the A-IoT paging message are indicated by first authorization information, and the resources of the plurality of messages are indicated by second authorization information simultaneously, The plurality of messages include a trigger message of A-IoT Msg 1, and a time interval between the resources indicated by the first authorization information and the resources indicated by the second authorization information is greater than a minimum time interval between two consecutive reader-to-device (R2D) transmissions; or The plurality of messages do not include a trigger message of A-IoT Msg 1, and a time interval between the resources indicated by the first authorization information and the resources indicated by the second authorization information is greater than a minimum time interval between a R2D transmission and a device-to-reader (D2R) transmission associated with the R2D transmission.

32. The method of any one of claims 29-31, wherein, The resources of at least part of the plurality of messages are indicated by different authorization information, including: The authorization information is a configured grant, and the resources of the plurality of messages are indicated by different authorization information respectively; or The authorization information is a dynamic grant, and the dynamic grant is used to indicate resources of at least one message in the plurality of messages.

33. The method of any one of claims 27-32, wherein, The resources indicated by the authorization information include frequency domain resources, and the frequency domain resources are located in one or more of the following frequency bands: a dedicated frequency band for the A-IoT communication, an uplink frequency band, a downlink frequency band, and a guard frequency band between the uplink frequency band and the downlink frequency band.

34. The method of any one of claims 27-33, wherein, The method further includes: The second device sends time advance (TA) to the first device. The A-IoT transmission of the first device on the uplink frequency band is based on uplink timing with time advance (TA).

35. The method of any one of claims 27-34, wherein, The method further includes: The second device sends a synchronization signal to the first device. The A-IoT transmission of the first device on the downlink frequency band, the guard frequency band between the uplink frequency band and the downlink frequency band, or the dedicated frequency band is based on downlink timing determined based on the synchronization signal.

36. The method of any one of claims 27-35, wherein, The first device is an intermediate node or a carrier node in the A-IoT communication, the second device is a network device, and the third device is an A-IoT device.

37. The method of claim 36, wherein, the intermediate node and the carrier node are the same device or different devices; and / or, the carrier node is controlled by the network device or by the intermediate node.

38. A communications device, characterized by The communication device is a first device, comprising: a transceiver configured to receive grant information transmitted by a second device, wherein the grant information indicates resources for an ambient Internet of Things (A-IoT) communication between the first device and a third device.

39. The communication device of claim 38, wherein, The grant information comprises a configured grant or a dynamic grant, and the configured grant is static or semi-static.

40. The communication device of claim 38 or 39, wherein, Resources of an A-IoT paging message in the A-IoT communication are indicated by first grant information, and resources of a plurality of messages after the A-IoT paging message are indicated by the following manners: The resources of the plurality of messages are indicated by second grant information simultaneously; or The resources of at least part of the plurality of messages are indicated by different grant information. The plurality of messages comprise one or more of the following: a trigger message of A-IoT Msg 1, A-IoT Msg 1, Msg 2, and Msg 3.

41. The communication device of claim 40, wherein, The resources of the A-IoT paging message are indicated by first grant information, and the resources of the plurality of messages are indicated by second grant information simultaneously, wherein the resources indicated by the second configured grant are located between two consecutive resources indicated by the first configured grant.

42. The communication device of claim 40 or 41, wherein, The resources of the A-IoT paging message are indicated by first grant information, and the resources of the plurality of messages are indicated by second grant information simultaneously, The plurality of messages comprise a trigger message of A-IoT Msg 1, and a time interval between the resources indicated by the first grant information and the resources indicated by the second grant information is greater than a minimum time interval between two consecutive reader-to-device (R2D) transmissions; or The plurality of messages do not comprise a trigger message of A-IoT Msg 1, and a time interval between the resources indicated by the first grant information and the resources indicated by the second grant information is greater than a minimum time interval between a R2D transmission and a device-to-reader (D2R) transmission associated with the R2D transmission.

43. The communication device of claim 42, wherein, The resources of at least part of the plurality of messages are indicated by different grant information, comprising: The grant information is a configured grant, and the resources of the plurality of messages are indicated by different grant information respectively; or The grant information is a dynamic grant, and the dynamic grant is used to indicate the resources of at least one message in the plurality of messages.

44. The communication device of any one of claims 38 to 43, wherein, The resources indicated by the grant information comprise frequency domain resources, and the frequency domain resources are located in one or more of the following frequency bands: a dedicated frequency band for the A-IoT communication, an uplink frequency band, a downlink frequency band, and a guard frequency band between the uplink frequency band and the downlink frequency band.

45. The communication device of claim 44, wherein, The first device is an intermediate node in the A-IoT communication, and the communication device further comprises a processing unit configured to: In a case where the frequency domain resource is located in the dedicated frequency band or the guard frequency band, it is determined to perform a first operation for the dedicated frequency band and the guard frequency band. In a case where the frequency domain resource is located in the uplink frequency band or the downlink frequency band, it is determined to perform a second operation for the uplink frequency band and the downlink frequency band.

46. The communication device of claim 45, wherein, In a case where the intermediate node is in a radio link failure (RLF) state, if the authorization information is a configured grant, the first operation includes: continuing to use the frequency domain resource for R2D transmission until a radio resource control (RRC) reestablishment is completed; or continuing to use the frequency domain resource for R2D transmission and releasing the frequency domain resource after the RRC reestablishment fails.

47. The communication device of claim 45 or 46, wherein, In a case where the intermediate node is in an RLF state, the second operation includes: immediately releasing the frequency domain resource; or releasing the frequency domain resource after a R2D message being transmitted or to be transmitted on the frequency domain resource is transmitted. In a case where the intermediate node is in a handover (HO) state, if the authorization information is a configured grant, the first operation and / or the second operation includes: continuing to use the frequency domain resource for R2D transmission until authorization information sent by a target base station is received; or continuing to use the frequency domain resource for R2D transmission and releasing the frequency domain resource after the handover fails; or 48. The communication device of any one of claims 45 to 47, wherein, in a case where the HO is a dual active stack (DAPS) handover, continuing to use the frequency domain resource for R2D transmission until authorization information sent by a source base station or the target base station is received; or releasing the frequency domain resource after R2D transmission being performed on the frequency domain resource is completed, and using a resource authorized by the target base station for the intermediate node for R2D transmission; or immediately releasing the frequency domain resource, and using a resource authorized by the target base station for the intermediate node for R2D transmission; or 49. The communication device of any one of claims 45 to 48, wherein, releasing the frequency domain resource after an inventory for the third device is completed. In a case where the intermediate node is in an HO state, if the authorization information is a dynamic grant, the first operation and / or the second operation includes: continuing to use the frequency domain resource for R2D transmission until authorization information sent by a target base station is received; or continuing to use the frequency domain resource for R2D transmission and releasing the frequency domain resource after the handover fails; or ​ ​ ​ 50. The communication device of any one of claims 45 to 49, wherein, ​ ​ ​ In the case that the HO switching is a DAPS switching, the R2D transmission using the frequency domain resource is continued until authorization information sent by the source base station or the target base station is received; or, After the ongoing R2D transmission on the frequency domain resource is completed, the frequency domain resource is released, and the R2D transmission is performed using the resource authorized by the target base station for the intermediate node; or, The frequency domain resource is immediately released, and the R2D transmission is performed using the resource authorized by the target base station for the intermediate node; The frequency domain resource that has not been used for the R2D transmission is released; or After the R2D message being sent or to be sent on the frequency domain resource is sent, the frequency domain resource is released; or After the inventory for the third device is completed, the frequency domain resource is released.

51. The communication device according to any one of claims 46, 47 and 50, wherein, the R2D message comprises a Msg 2 being sent; or the R2D message comprises a Msg 2 to be sent, and an A-IoT Msg 1 corresponding to the Msg 2 has been sent.

52. The communications device of claim 44, wherein The first device is a carrier node of the A-IoT communication, and the communication device further comprises a processing unit configured to: in the case that the frequency domain resource is located in the dedicated frequency band or the guard frequency band, determine to perform a third operation for the dedicated frequency band or the guard frequency band; in the case that the frequency domain resource is located in the uplink frequency band or the downlink frequency band, determine to perform a fourth operation for the uplink frequency band or the downlink frequency band.

53. The communication device of claim 52, wherein, in the case that the carrier node is in an RLF state, if the authorization information is a configured grant, the third operation comprises: continuing to use the frequency domain resource for carrier transmission until RRC reestablishment is completed; or continuing to use the frequency domain resource for carrier transmission, and releasing the frequency domain resource after the RRC reestablishment fails.

54. The communication device of claim 52 or 53, wherein, in the case that the carrier node is in an RLF state, if the authorization information is a dynamic grant, the third operation comprises: continuing to use the frequency domain resource for carrier transmission until RRC reestablishment is completed; or continuing to use the frequency domain resource for carrier transmission, and releasing the frequency domain resource after the RRC reestablishment fails. after assisting the third device to complete the ongoing D2R transmission, releasing the frequency domain resource; or releasing the frequency domain resource that has not been used for carrier transmission; or after assisting the third device to send a D2R message being sent or to be sent, releasing the frequency domain resource.

55. The communication device of any one of claims 52 to 54, wherein, in the case that the carrier node is in an RLF state, the fourth operation comprises: immediately releasing the frequency domain resource; or after assisting the third device to send a D2R message being sent or to be sent, releasing the frequency domain resource.

56. The communication device of any one of claims 52 to 55, wherein, in the case that the carrier node is in an HO state, if the authorization information is a configured grant, the third operation and / or the fourth operation comprises: continuing to use the frequency domain resource for carrier transmission until authorization information sent by the target base station is received; or continue to use the frequency domain resource for carrier transmission, and release the frequency domain resource after the handover fails; or continue to use the frequency domain resource for carrier transmission until receiving the authorization information sent by the source base station or the target base station in the case of DAPS handover; or release the frequency domain resource after assisting the third device to complete the ongoing D2R transmission, and use the resource authorized by the target base station for the carrier node to perform carrier transmission; or immediately release the frequency domain resource, and use the resource authorized by the target base station for the carrier node to perform carrier transmission; or release the frequency domain resource after completing the inventory for the third device, and use the resource authorized by the target base station for the carrier node to perform carrier transmission.

57. The communication device of any one of claims 52 to 56, wherein, In the case that the carrier node is in the HO state, if the authorization information is dynamic authorization, the third operation and / or the fourth operation include: continue to use the frequency domain resource for carrier transmission until receiving the authorization information sent by the target base station; or continue to use the frequency domain resource for carrier transmission, and release the frequency domain resource after the handover fails; or continue to use the frequency domain resource for carrier transmission until receiving the authorization information sent by the source base station or the target base station in the case of DAPS handover; or release the frequency domain resource after assisting the third device to complete the ongoing D2R transmission, and use the resource authorized by the target base station for the carrier node to perform carrier transmission; or immediately release the frequency domain resource, and use the resource authorized by the target base station for the carrier node to perform carrier transmission; or release the frequency domain resource after completing the inventory for the third device, and use the resource authorized by the target base station for the carrier node to perform carrier transmission; or release the frequency domain resource that has not been used for carrier transmission; or release the frequency domain resource after assisting the third device to send the D2R message that is being sent or will be sent.

58. The communication device of claim 57, wherein, In the case that the carrier node is in the HO state, the association relationship between the carrier node and the intermediate node is released by the carrier node and the intermediate node after completing the handover.

59. The communication device of any one of claims 54, 55 and 57, wherein the D2R message includes an A-IoT Msg 1 or Msg 3 being sent; or the D2R message includes a Msg 3 to be sent, and an A-IoT Msg 1 corresponding to the Msg 3 has been sent.

60. The communication device of any one of claims 38 to 59, wherein the A-IoT transmission of the first device at the uplink frequency band is based on uplink timing with time advance (TA); the A-IoT transmission of the first device at the downlink frequency band, the guard frequency band between the uplink frequency band and the downlink frequency band, or the dedicated frequency band is based on downlink timing.

61. The communication device of any one of claims 38 to 60, wherein The first device continues to perform the ongoing A-IoT transmission based on the current transmit power; and / or The first device determines, based on predetermined power control parameters, a transmit power for a next A-IoT transmission of the A-IoT transmission.

62. The communication device of any one of claims 38 to 61, wherein, The first device is an intermediate node or a carrier node in the A-IoT communication, the second device is a network device, and the third device is an A-IoT device.

63. The communication device of claim 62, wherein The intermediate node and the carrier node are the same device or different devices; and / or The carrier node is controlled by the network device or by the intermediate node.

64. A communications device, characterized by The communication device is a second device, comprising: a transceiver configured to send, to a first device, grant information, wherein the grant information indicates resources for an ambient Internet of Things (A-IoT) communication between the first device and a third device.

65. The communication device of claim 64, wherein, The grant information comprises a configured grant or a dynamic grant, and the configured grant is static or semi-static.

66. The communication device of claim 64 or 65, wherein, Resources of an A-IoT paging message in the A-IoT communication are indicated by first grant information, and resources of a plurality of messages after the A-IoT paging message are indicated by: the resources of the plurality of messages are indicated by second grant information simultaneously; or resources of at least part of the plurality of messages are indicated by different grant information. The plurality of messages comprise one or more of: a trigger message of A-IoT Msg 1, A-IoT Msg 1, Msg 2, and Msg 3.

67. The communication device of claim 66, wherein, The resources of the A-IoT paging message are indicated by first grant information, and the resources of the plurality of messages are indicated by second grant information simultaneously, wherein the resources indicated by the second configured grant are located between two consecutive resources indicated by the first configured grant.

68. The communication device of claim 66 or 67, wherein, The resources of the A-IoT paging message are indicated by first grant information, and the resources of the plurality of messages are indicated by second grant information simultaneously, The plurality of messages comprise a trigger message of A-IoT Msg 1, and a time interval between the resources indicated by the first grant information and the resources indicated by the second grant information is greater than a minimum time interval between two consecutive reader-to-device (R2D) transmissions; or The plurality of messages do not comprise a trigger message of A-IoT Msg 1, and a time interval between the resources indicated by the first grant information and the resources indicated by the second grant information is greater than a minimum time interval between a R2D transmission and a device-to-reader (D2R) transmission associated with the R2D transmission.

69. The communication device of claim 68, wherein, The resources of at least part of the plurality of messages are indicated by different grant information, comprising: The grant information is a configured grant, and the resources of the plurality of messages are indicated by different grant information respectively; or The grant information is a dynamic grant, and the dynamic grant is used to indicate resources of at least one message of the plurality of messages.

70. The communication device of any one of claims 64 to 69, wherein, The resource indicated by the authorization information includes a frequency domain resource, and the frequency domain resource is located in one or more of the following frequency bands: a dedicated frequency band for the A-IoT communication, an uplink frequency band, a downlink frequency band, and a guard frequency band between the uplink frequency band and the downlink frequency band.

71. The communication device of any one of claims 64 to 70, wherein, The communication device further includes: The second device sends a time advance TA to the first device. The A-IoT transmission of the first device in the uplink frequency band is based on uplink timing with the time advance TA.

72. The communication device of any one of claims 64 to 71, wherein, The transceiver is further configured to: Send a synchronization signal to the first device. The A-IoT transmission of the first device in the downlink frequency band, the guard frequency band between the uplink frequency band and the downlink frequency band, or the dedicated frequency band is based on downlink timing determined based on the synchronization signal.

73. The communication device of any one of claims 64-72, wherein, The first device is an intermediate node or a carrier node in the A-IoT communication, the second device is a network device, and the third device is an A-IoT device.

74. The communication device of claim 73, wherein: The intermediate node and the carrier node are the same device or different devices; and / or The carrier node is controlled by the network device or controlled by the intermediate node.

75. A communications device, characterized by A terminal device includes a transceiver, a memory, and a processor. The memory is configured to store a program. The processor is configured to invoke the program in the memory and control the transceiver to receive or send a signal, so that the terminal device performs the method according to any one of claims 1-22.

76. A communications device, characterized by A network device includes a transceiver, a memory, and a processor. The memory is configured to store a program. The processor is configured to invoke the program in the memory and control the transceiver to receive or send a signal, so that the network device performs the method according to any one of claims 23-37.

77. An apparatus comprising: An apparatus includes a processor configured to invoke a program from a memory, so that the apparatus performs the method according to any one of claims 1-37.

78. A chip, comprising: A chip includes a processor configured to invoke a program from a memory, so that a device installed with the chip performs the method according to any one of claims 1-37.

79. A computer-readable storage medium, characterized in that, A computer program product has a program stored thereon, which causes a computer to perform the method according to any one of claims 1-37.

80. A computer program product, characterised in that, A computer program product has a program stored thereon, which causes a computer to perform the method according to any one of claims 1-37.

81. A computer program, characterized in that, A computer program product has a program stored thereon, which causes a computer to perform the method according to any one of claims 1-37.

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