Method and apparatus for wireless communication

Abstract

A method and apparatus for wireless communication are provided. The method comprises the following steps: a first device enters a first state or a second state according to first information; wherein the first state supports the first device to collect energy, and the second state does not support the first device to collect energy.

Description

TECHNICAL FIELD

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

[0002] Some devices (for example, ambient internet of things (A-IoT) devices) have no battery or have very low battery storage energy. These devices can perform energy collection, but can also cause the battery to be depleted due to always listening, thereby affecting communication efficiency. Therefore, how to perform communication based on energy collection becomes a technical problem to be solved. SUMMARY

[0003] The present application provides a method and apparatus for wireless communication. The following introduces each aspect of the embodiments of the present application.

[0004] In a first aspect, a method for wireless communication is provided, comprising: a first device entering a first state or entering a second state according to first information; wherein the first state supports the first device to perform energy collection, and the second state does not support the first device to perform energy collection.

[0005] In a second aspect, a method for wireless communication is provided, comprising: a second device sending first information to a first device, or receiving the first information sent by the first device; wherein the first information is used for the first device to enter a first state or enter a second state, the first state supports the first device to perform energy collection, and the second state does not support the first device to perform energy collection.

[0006] In a third aspect, an apparatus for wireless communication is provided, the apparatus being a first device, and the apparatus comprising: a processing unit configured to enter a first state or enter a second state according to first information; wherein the first state supports the first device to perform energy collection, and the second state does not support the first device to perform energy collection.

[0007] In a fourth aspect, an apparatus for wireless communication is provided, the apparatus being a second device, and the apparatus comprising: a transceiver configured to send first information to a first device, or receive the first information sent by the first device; wherein the first information is used for the first device to enter a first state or enter a second state, the first state supports the first device to perform energy collection, and the second state does not support the first device to perform energy collection.

[0008] In a fifth aspect, a communication apparatus is provided, including a memory and a processor, the memory is configured to store a program, and the processor is configured to invoke the program in the memory to execute the method in the first aspect or the second aspect.

[0009] In a sixth aspect, an apparatus is provided, including a processor configured to invoke a program from a memory to execute the method in the first aspect or the second aspect.

[0010] In a seventh aspect, a chip is provided, including a processor configured to invoke a program from a memory, so that a device installed with the chip executes the method in the first aspect or the second aspect.

[0011] In an eighth aspect, a computer readable storage medium is provided, having a program stored thereon, the program causing a computer to execute the method in the first aspect or the second aspect.

[0012] In a ninth aspect, a computer program product is provided, including a program, the program causing a computer to execute the method in the first aspect or the second aspect.

[0013] In a tenth aspect, a computer program is provided, the computer program causing a computer to execute the method in the first aspect or the second aspect.

[0014] In the embodiments of the present application, the state of the first device (for example, an A-IoT device) includes a first state supporting energy collection and a second state not supporting energy collection. The first device can enter the first state or enter the second state according to the first information. Therefore, the first device can timely perform energy collection according to the first information, so as to ensure the power demand of normal communication through a more reasonable energy collection manner. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is an architecture example diagram of a wireless communication system to which the embodiments of the present application are applicable.

[0016] Figure 2 is a structure schematic diagram of an A-IoT system connection topology to which the embodiments of the present application are applicable.

[0017] Figure 3 is a structure schematic diagram of another A-IoT system connection topology to which the embodiments of the present application are applicable.

[0018] Figure 4A and Figure 4B is a structure schematic diagram of another A-IoT system connection topology to which the embodiments of the present application are applicable.

[0019] Figure 5 is a structure schematic diagram of another A-IoT system connection topology to which the embodiments of the present application are applicable.

[0020] Figure 6 is a flowchart of a method for wireless communication provided by an embodiment of the present application.

[0021] Figure 7 is Figure 6 is a flowchart of a possible implementation of the method shown in FIG. 1.

[0022] Figure 8 is Figure 6 is a flowchart of another possible implementation of the method shown in FIG. 1.

[0023] Figure 9 is a possible schematic diagram of a configuration state transition time being different from an actual transition time.

[0024] Figure 10 is another possible schematic diagram of a configuration state transition time being different from an actual transition time.

[0025] Figure 11 is a structural schematic diagram of an apparatus for wireless communication provided by an embodiment of the present application.

[0026] Figure 12 is a structural schematic diagram of another apparatus for wireless communication provided by an embodiment of the present application.

[0027] Figure 13 is a structural schematic diagram of a communication apparatus provided by an embodiment of the present application. DETAILED DESCRIPTION

[0028] Communication system architecture

[0029] Figure 1 is an example 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 communication coverage for a specific geographic area and can communicate with the terminal device 120 located in the coverage area.

[0030] Figure 1 One network device and multiple terminal devices are exemplarily shown, for example, the terminal device 120a to the terminal device 120j in the figure. Optionally, the wireless communication system 100 can include multiple network devices and each network device can include other numbers of terminal devices within its coverage, which are not limited by embodiments of the present application. Optionally, the wireless communication system 100 can further include a network controller, a mobile management entity and other network entities, which are not limited by embodiments of the present application.

[0031] It should be understood that the technical solutions of the embodiments of the present application can be applied to various communication systems, for example: a 5th-generation (5G) communication system or a new radio (NR) system, an evolved system of the NR system, a 5G advanced system, a long term evolution (LTE) system, an LTE frequency division duplex (FDD) system, an LTE time division duplex (TDD) system, an advanced long term evolution (LTE-A) system, a universal mobile telecommunication system (UMTS), a wireless local area networks (WLAN) system, a wireless fidelity (WiFi) system, and the like. The embodiments of the present application can also be applied to other communication systems, for example, a 6th-generation (6G) mobile communication system or a future communication system such as a satellite communication system.

[0032] The conventional communication system supports a limited number of connections, which is easy to implement. However, with the development of communication technology, the communication system can not only support traditional cellular communication, but also support one or more types of other types of communication. For example, the communication system can support one or more of the following communications: device to device (D2D) communication, machine to machine (M2M) communication, machine type communication (MTC), enhanced MTC (eMTC), vehicle to vehicle (V2V) communication, and vehicle to everything (V2X) communication, and the like. The embodiments of the present application can also be applied to a communication system supporting the above communication modes.

[0033] The terminal device in the embodiments of the present application can also be referred to as a user equipment (UE), an access terminal, a user unit, a user station, a mobile station, a mobile station (MS), 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 camera device, 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 UEs 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.

[0034] The network device in the embodiments of the present application can refer to a radio access network (RAN) node (or device) that accesses a terminal device or other communication device (for example, an A-IoT device) to a wireless network. The network device can also be referred to as an access network device, a radio access network device, a radio access network function or a radio access network unit. The network device can be a base station (BS), a WLAN access point or a WiFi node, etc. The network device can also cover various names in the following or replace the following names, such as: Node B (NodeB), evolved Node B (eNB), next generation Node B (gNB), relay station, access point (AP), base transceiver station (BTS), radio base station, radio transceiver, basic service set (BSS), extended service set (ESS), home NodeB, home evolved NodeB, 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, 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 or some other suitable term in the field. The network device is not limited to a specific technical vocabulary as long as the same technical effect is achieved. Exemplarily, the network device can be a macro base station, a micro base station, a relay node, a donor node or the like, or a combination thereof. The network device can also refer to a communication module, a modem or a chip provided in the foregoing devices or apparatuses. The network device can also be a mobile switching center and a device assuming a base station function in D2D, V2X, M2M communication, a network side device in a 6G network, a device assuming a base station function in a future communication system, etc. The network device can support networks of the same or different access technologies. The embodiments of the present application are not limited to the specific type of network device, the specific technology used and the specific device form.

[0035] In some deployments, the network device in the embodiments of the present application 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.

[0036] 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 surface; can also be deployed on aircraft, balloons and satellites in the air. The scenarios in which the network device and the terminal device are located are not limited in the embodiments of the present application.

[0037] It should be understood that the devices with communication functions in the network / system in the embodiments of the present application can be referred to as communication devices. For example, the network device 110 and the terminal device 120 shown in the communication system 100 can be referred to as communication devices. Figure 1 The communication system 100 shown as an example, the communication device can include network devices 110 and a plurality of terminal devices with communication functions, network devices 110 and a plurality of terminal devices can be the specific devices described above, and details are not repeated here.

[0038] 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).

[0039] Internet of things (IoT)

[0040] In recent years, the Internet of Things has attracted much attention in the field of wireless communication. In order to improve production efficiency and improve the comfort of life, more and more "things" are expected to be connected to each other. By further reducing the size, complexity and power consumption of Internet of Things devices, hundreds of billions or even trillions of Internet of Things devices can be deployed for various applications and provide additional value throughout the value chain. Most of the current Internet of Things devices need to be powered by manually replacing batteries or charging batteries, which will result in high maintenance costs and serious environmental problems, and even pose a safety hazard in some scenarios (such as wireless sensors in the power and oil industries).

[0041] As automation and digitization in various industries open up many new markets, new Internet of Things technologies are needed to support batteryless devices or energy storage devices that do not need to be manually replaced or charged, i.e. A-IoT devices. The form factor of such devices is very small, without battery devices or with very small energy storage capacity (compared to existing Internet of Things devices). Among them, existing Internet of Things devices are, for example, narrow band Internet of Things (NB-IoT) devices, low power wide area (LPWA) devices, reduced capability (RedCap) devices, etc.

[0042] As an example, due to the extremely small size of A-IoT devices, and without battery or without the need for charging, A-IoT devices have extremely limited capabilities and complexity, and have extremely small transmission power.

[0043] A-IoT devices can work by collecting other energy in the environment, such as obtaining energy from radio signals, kinetic energy, thermal energy, light energy, etc. For another example, A-IoT devices can perform energy harvesting through radio frequency signals transmitted by network devices.

[0044] In inventory and other scenarios, the main application of A-IoT devices is radio frequency identification (RFID). However, RFID cannot access the network in the unlicensed frequency band. NR has begun to study A-IoT devices in related discussions (e.g., Release 19) to be able to more effectively manage devices and improve network efficiency, and higher security.

[0045] In inventory and other scenarios, A-IoT devices can also be referred to as A-IoT tags or A-IoT terminals. The device that performs data reading or data collection to the A-IoT device is referred to as a reader or reader. The message sent by the reader to the A-IoT device can be referred to as a R2D (reader-to-device) message, and the transmission is a R2D transmission. The message sent by the A-IoT device to the reader can be referred to as a D2R (device-to-reader) message, and the transmission is a D2R transmission. Therefore, the transmission targeted by the A-IoT device includes R2D transmission and D2R transmission.

[0046] As an example, R2D transmission can be implemented through a R2D channel, and D2R transmission can be implemented through a D2R channel. Among them, the R2D channel can include a physical R2D channel (PRDCH); the D2R channel can include a physical D2R channel (PRDCH).

[0047] The following takes the NR A-IoT system as an example, combined with Figures 2 to 5 introduce various connectivity topologies of A-IoT system. In various topologies, A-IoT data / signaling transmission is performed between communication devices.

[0048] Figure 2Fig. 1 is a structural schematic diagram of a topology 1. The topology 1 includes a network device (for example, a base station) and an A-IoT device.

[0049] As shown in Fig. 2, the A-IoT device 220 is directly connected with the base station 210 (i.e., a reader). It can be seen that, in the topology 1, the reader is the A-IoT-capable base station 210. The signal transmission manner (active transmission) of the reader to the A-IoT device and the signal transmission manner (backscatter communication) of the A-IoT device to the reader are different (for example, refer to TS 38.291 and the like). Figure 2

[0050] Fig. 3 is a structural schematic diagram of a topology 2. Compared with the topology 1, the topology 2 further includes an intermediate node. The intermediate node is a terminal device with A-IoT capability, an IAB, a repeater and the like. For example, in the research of NR, it is mainly discussed that the intermediate node is a UE with A-IoT capability. Figure 3 As shown in Fig. 4, the A-IoT device 320 is connected with the base station 310 through the intermediate node 330. It can be seen that, in the topology 1, the reader is the intermediate node 330. The interface of the intermediate node 330 and the A-IoT device 320 is the same as that in the topology 1. That is, the signal transmission manner of the reader to the A-IoT device and the signal transmission manner of the A-IoT device to the reader are different. It can be seen that, the communication between the intermediate node 330 and the base station 310 is transmitted through the Uu interface.

[0051] Figure 3 Figure 3 It can be seen that, the communication between the intermediate node 330 and the base station 310 is transmitted through the Uu interface.

[0052] Figure 4A Fig. 5 is a structural schematic diagram of two topologies 3. Figure 4B Fig. 6 is an example of the topology 3 of downlink assistance, Figure 4A Fig. 7 is an example of the topology 3 of uplink assistance. Compared with the topology 1, the topology 3 has an assisting node. The assisting node is a terminal device with A-IoT capability, an IAB, a repeater and the like. Figure 4B

[0053] ​​​As shown in FIG. 4, the uplink procedure or downlink procedure between the A-IoT device 420 and the base station 410 is connected through the assistance node 430. As can be seen from FIG. 4, the communication between the assistance node 430 and the base station 410 side is transmitted through the Uu interface. In Figure 4A As shown in the downlink procedure, the A-IoT device 420 receives the signal from the assistance node 430 and transmits the signal to the base station 410. In Figure 4B As shown in the uplink procedure, the A-IoT device 420 receives the signal from the base station 410 and transmits the signal to the assistance node 430.

[0054] Figure 5 FIG. 4 is a structural schematic diagram of the topology 4. The topology 4 includes a terminal device (for example, a UE) and an A-IoT device. The reader is a terminal device with A-IoT capability. As Figure 5 As shown, the A-IoT device 520 is directly connected with the terminal device 510.

[0055] The above describes the scenarios of various topologies. Figures 2 to 5 For example, in the scenarios of the topology 1 and the topology 2, the A-IoT device is directly connected with the network device, or the A-IoT device is connected with the network device through the relay node. In these scenarios, the A-IoT device can transmit the device-originated autonomous (DO-A) transmission.

[0056] As can be seen from the above, the battery capacity of the A-IoT device is weak, or the A-IoT device has no battery or the battery has very low energy storage. Due to the limited power that can support the operation of the A-IoT device, the time that the A-IoT device can continuously receive or transmit is limited. If the A-IoT device still maintains the listening of the R2D signal when there is no transmission or reception, the A-IoT device is likely to run out of power quickly, and miss the real scheduling of its R2D transmission or fail to complete the transmission of the D2R transmission.

[0057] For example, in the inventory process, that is, the initial access process, the A-IoT device can not access the network for a long time. In this scenario, if the A-IoT device always listens, the power will be zero due to the power consumption of listening.

[0058] For another example, after the inventory, that is, after accessing the network, the A-IoT device needs to continue to listen to the message from the reader in the command and other scenarios to determine whether it is scheduled by the reader. In these scenarios, the A-IoT device will also run out of battery power due to the power consumption of listening (considering that the battery power of the A-IoT device is extremely limited).

[0059] Therefore, in order to avoid the battery being depleted or affecting normal transmission, the timing of energy harvesting for A-IoT devices is an issue that needs to be considered.

[0060] Based on this, embodiments of this application propose a method for wireless communication. In this method, the state of a first device (e.g., an A-IoT device) includes a first state supporting energy harvesting and a second state not supporting energy harvesting. In the second state, the first device cannot harvest energy because it is receiving and transmitting signals. Based on first information, the first device can promptly enter the first state when there are no signals being received or transmitted, in order to obtain energy from the environment through energy harvesting and achieve charging. The first device's ability to promptly enter a charging state based on the first information ensures sufficient power when receiving R2D or transmitting D2R signals, and avoids the probability of the first device starting charging only after a complete power outage, reducing the charging time of the first device and further reducing the system's transmission latency. Furthermore, the solution proposed in this application reduces the probability of the first device losing power, thereby increasing transmission reliability.

[0061] In this method, in order to ensure that the first device can complete the entire communication process using limited power, the first device will not remain in the first state or the second state indefinitely, but will switch states according to the first information to achieve flexible switching between communication and energy harvesting.

[0062] To facilitate understanding, the following will be combined with... Figure 6 The methods proposed in the embodiments of this application will be described in detail. Figure 6 The method shown includes step S610, which is performed by a first device. The first device can be a communication device in an A-IoT system.

[0063] In some implementations, the first device is the A-IoT device described above. The first device can receive R2D transmissions sent by the reader in the A-IoT system, and can also send D2R transmissions to the reader.

[0064] The communication device that interacts with the first device is the second device. The second device can be any type of reader in the A-IoT system. For example, the second device can be a network device, a terminal device, a relay node, or an auxiliary node.

[0065] As one implementation method, the second device can be any type of network device. For example, the second device is... Figure 2 Base station 210 in the middle.

[0066] As one implementation method, the second device can be any type of terminal device. For example, the second device is... Figure 5 Terminal device 510.

[0067] As an implementation, the second device can be a relay node. The relay node is also referred to as an intermediate node. The relay node is a communication device such as a terminal device with A-IoT capability, an IAB, a repeater, etc. For example, the second device is the relay node 330 in Figure 3

[0068] As an implementation, the second device can be an auxiliary node. The auxiliary node is a communication device such as a terminal device with A-IoT capability, an IAB, a repeater, etc. For example, the second device is the auxiliary node 430 in FIG. 4.

[0069] Referring to Figure 6 At step S610, the first device enters the first state or enters the second state according to the first information. As can be seen, the state of the first device includes at least two states. In some scenarios, the first state or the second state can be further divided into multiple states.

[0070] The first state supports the first device to perform energy collection. When the first device is in the first state, energy can be collected from the environment for the purpose of charging. For example, the first device in the first state can receive a charging signal sent by the second device to perform energy collection. For another example, the first device in the first state can perform energy collection and storage through a passive energy storage device or method such as a capacitor.

[0071] As an implementation, when the first device is in the first state, the first device can receive a charging signal sent by the second device. For the second device, when the first device is in the first state, the second device can send a charging signal to the first device. When the first device is not in the first state, the second device does not send a charging signal to the first device. For example, the second device can send a wireless signal for the first device to charge on the configured time-frequency resource in which the first device is in the first state.

[0072] In the above implementation, the charging signal can be any kind of signal for the first device to charge. For example, the charging signal for the first device to charge can be an orthogonal frequency division multiplexing (OFDM) waveform signal. For another example, the charging signal for the first device to charge can be a sine waveform.

[0073] ​The first state can include one or more states in which the first device performs energy harvesting. In some implementations, the first device in the first state can only perform energy harvesting. For example, when the first device is completely out of power, the first device cannot perform listening, receiving and transmitting of signals, and cannot maintain a clock to keep working to count time. The first state in this case can also be referred to as an OFF state. In other implementations, the first device in the first state can perform energy harvesting and other work. For example, the first device in the first state can maintain a clock to keep working and count time to maintain synchronization. In this case, the first device can also perform storage, but cannot perform listening, receiving and transmitting of signals, and thus the first state can also be referred to as a sleep state.

[0074] As an implementation, the first state can also support the first device to count time. That is, the first state can support the first device to perform energy harvesting and count time. In this case, the first state can be replaced by the sleep state. The first state also supports the first device to count time, which can be understood as that the first device will not enter a state of power zero or unable to work. In the embodiments of the present application, the first device enters the first state in time to charge according to the first information, which is to reduce or avoid the situation of unable to work due to power zero.

[0075] As an implementation, the first state only supports the first device to perform energy harvesting. The first state can be replaced by the OFF state.

[0076] The second state does not support the first device to perform energy harvesting. The second state is relative to the first state. When the first device is in the second state, it cannot perform energy harvesting or does not need to perform energy harvesting. In some implementations, the first device cannot perform energy harvesting because it is performing listening, receiving or transmitting of signals. Therefore, not supporting energy harvesting can also be replaced by supporting wireless communication.

[0077] As an implementation, the first state can be a charging state of the first device, and the second state can be a working state of the first device.

[0078] The second state can include one or more states in which the first device does not perform energy harvesting. In some implementations, the first device in the second state can perform normal communication with the second device, but cannot perform energy harvesting. For example, the first device can be able to monitor / receive R2D transmissions sent by the reader, can be able to send D2R transmissions, and can be able to perform normal timing and storage. The second state in this case can also be referred to as an ON state or a wake-up state. In other implementations, the first device in the second state can perform partial communication. For example, the second device can monitor R2D transmissions and maintain a clock to continue timing and storage, but the first device cannot receive R2D transmissions and cannot send D2R transmissions. The second state in this case can also be referred to as a monitor state.

[0079] As an implementation, the second state can be one of: the second state supports the first device to communicate with the second device; the second state does not support the first device to transmit and receive transmissions; and the second state supports the first device to only monitor and time transmissions. The communication between the first device and the second device can refer to normal wireless communication. Transmitting can refer to sending D2R transmissions. Receiving can refer to receiving R2D transmissions. Monitoring can refer to monitoring R2D transmissions.

[0080] As an implementation, the first device in the second state can perform D2R transmissions and R2D transmissions with the second device.

[0081] As an implementation, the first device in the second state cannot send D2R transmissions and cannot receive R2D transmissions.

[0082] As an implementation, the first device in the second state only monitors, times, and stores R2D transmissions.

[0083] In some implementations, the states of the first device can include an available state and an unavailable state. As an implementation, the available state can include the ON / wake-up state, the monitor state, and the sleep state described above, and the unavailable state can be the OFF state. As another implementation, the available state can include the ON / wake-up state and the monitor state described above, and the unavailable state can include the sleep state and the OFF state. In this implementation, the available state is the second state, and the unavailable state is the first state.

[0084] As an implementation, the available state can include three states, i.e., state one to state three. In state one (on / wake-up state, etc.), the first device is able to communicate normally with the second device, i.e., is able to listen / receive R2D transmission sent by the second device, and is also able to send D2R transmission; the first device is also able to time and store normally, but is unable to collect energy. In state two (listen / on / wake-up state), the first device can listen to R2D transmission, and maintain the clock to continue working and timing and storing; but the first device is unable to receive R2D transmission, unable to send D2R transmission, and unable to collect energy to store energy. In state three (sleep state), the first device is unable to listen to and receive R2D transmission, and is unable to send D2R transmission; however, the first device is able to maintain the clock to continue working and timing (maintain synchronization) and storing, and is also able to collect energy to store energy.

[0085] As an implementation, the unavailable state can include state one (off state). In this state, the first device is unable to listen to and receive R2D transmission, unable to send D2R transmission, and unable to maintain the clock to continue working, and thus is unable to time.

[0086] As an implementation, the remaining power of the first device can be used to determine whether the first device is in the available state or the unavailable state.

[0087] It should be understood that the above-mentioned sleep state, wake-up state, on or off state, listen state, available or unavailable state are only examples, and are not limiting. Without introducing intermediate variables, the above-mentioned states can also be replaced by other functionally similar states.

[0088] The first information can be used by the first device to determine whether to enter the first state or whether to enter the second state. That is, the first information can control the first device to enter the first state or the second state. Illustratively, when the first information indicates that the first device enters the first state, and the current state is not the first state, the first device can enter the first state from the current state according to the first information. Or, when the first information indicates that the first device enters the first state, and the current state is the first state, the first device can maintain the current state according to the first information. Illustratively, when the first information indicates that the first device enters the second state, and the current state is not the second state, the first device can enter the second state from the current state according to the first information. Or, when the first information indicates that the first device enters the second state, and the current state is the second state, the first device can maintain the current state according to the first information.

[0089] As an implementation, the first device can enter the second state from the first state, or enter the first state from the second state according to the first information. In this case, the first information can also be referred to as state transition information.

[0090] As an implementation, the first device can enter the first state or enter the second state according to the first information with a certain period. Correspondingly, the first device can end the first state or end the second state according to the first information with a certain period.

[0091] The first device can determine the first information according to various manners, thereby determining whether to enter the first state or enter the second state. In some implementations, the first information can come from the second device. That is, the second device controls the first device to enter the first state or enter the second state. In other implementations, the first information can be determined by the first device itself and reported to the second device, so that the second device can adjust the transmission in time according to the state information of the first device. In yet other implementations, the first information can include a pre-defined rule, so that the first device and the second device determine the state of the first device based on the same rule.

[0092] When the second device controls the state of the first device, the first device can receive the first information from the second device. The second device can send the first information in different manners. As an implementation, the first information includes first configuration information and / or first indication information. For example, the second device can send configuration information related to the state of the first device, and the first information can be referred to as the first configuration information. That is, the first device can determine to enter the first state or enter the second state according to the configured manner. For another example, the second device can indicate the state related information of the first device, and the first information can be referred to as the first indication information.

[0093] As an example, the first information sent by the second device can be the first configuration information. The first configuration information can also be pre-configured information. For example, the first device can enter the sleep state according to the first configuration information from the second device within a corresponding time. For another example, the first device can determine to enter the sleep state and / or determine to enter the on state according to the first configuration information.

[0094] As another example, the first information sent by the second device can be the first indication information. For example, the first device can enter the sleep state after receiving the sleep indication from the second device. For another example, the first device can enter the on state after receiving the on indication from the second device.

[0095] The first information can be transmitted in various ways. As an example, the first configuration information can be configured in various ways. For example, the first configuration information can be static configuration information, or semi-static configuration information, or dynamic configuration information. As an example, the first indication information can be indicated in various ways. For example, the first indication information can be static indication information, or semi-static indication information, or dynamic indication information. As another example, the first indication information can be transmitted periodically, or semi-persistently, or aperiodically.

[0096] The first information can be used for multiple first devices, or can be dedicated information for a certain first device. When the first information is shared information for multiple first devices, the multiple first devices can be all first devices within the coverage of the second device, or all first devices within the coverage of the second device that belong to the same device group. For example, the first configuration information can be a configuration (i.e., common configuration) valid for all first devices within the coverage of the second device, or a configuration valid for a group of first devices, or a configuration valid for a certain first device. As another example, the first indication information can be an indication valid for all first devices within the coverage of the second device, or an indication valid for a group of first devices, or an indication valid for a certain first device.

[0097] After the first device receives the first information, the application time of the first information can be the reception time of the first information, or can be a time specified in the first information, or can be determined according to the first time interval. For example, after the first device receives the first information, the first device can directly apply the first information to enter the first state or the second state. As another example, after the first device receives the first information, the first device can apply the first information according to the time specified in the first information to enter the first state or the second state. As another example, after the first device receives the first information, the first device can wait for a duration corresponding to the first time interval, and then apply the first information to enter the first state or the second state.

[0098] As an implementation, the reception time of the first information and the first time interval are used for the first device to enter the first state or the second state. The first time interval is the interval between the application of the first information and the reception of the first information, which can be represented by T gap . For example, the first device receives the first configuration information or the first indication information at a start / end time n, and can start to enter the first state or the second state after n+T gap .

[0099] As an implementation, the first time interval can be determined according to configuration information from the second device and / or a protocol. For example, the first time interval can be configured by the second device to the first device. Other transmissions handled by the second device can cause the first time interval to be long.

[0100] As an implementation, the first time interval is related to the plurality of information. For example, the first time interval can be related to the time for the first device to process the first information after the first device receives the first information. For another example, the first time interval can also be related to the data transmission delay of the first device and / or the processing delay of the second device. For another example, the second device is an intermediate node, and the first time interval is related to other transmissions of the second device. The other transmissions processed by the second device can cause the first time interval to be longer.

[0101] The first device can enter the first state or enter the second state according to the first configuration information. Through the configuration manner of the second device, the first device can periodically (static) or semi-persistently (semi-static) enter the second state to work, or enter the first state to charge to ensure the power required for the next round of work. The manner of determining the state based on the first configuration information can reduce the signaling overhead and ensure that the first device has a charging opportunity to have sufficient power for transmission.

[0102] In some implementations, the first configuration information can include one or more of the following: a first period for the first state and the second state to switch; a duration for maintaining the first state; a duration for maintaining the second state; a start time or a start offset for entering the first state; a start time or a start offset for entering the second state; a time or an offset for ending the first state; and a time or an offset for ending the second state. The first period is, for example, a period for switching between the on-state and the sleep state.

[0103] As an example, the start offset for entering the first state or entering the second state can be determined based on the configuration time or the application time of the first configuration information, or can be determined based on the time specified by the first configuration information.

[0104] As an example, the offset for ending the first state or ending the second state can be determined based on the configuration time or the application time of the first configuration information, or can be determined based on the start time of the first state or the second state, or can be determined based on the time specified by the first configuration information.

[0105] It should be noted that the first configuration information can include or not include the configuration information of the period. When the first configuration information includes the first period, the first device can determine the time for entering the first state or entering the second state according to the first period, the related duration, the offset, and the like. When the first configuration information does not include the first period, the first device can determine the time for entering the first state or entering the second state according to the transmission time, the duration, and the like of the first configuration information.

[0106] When the first configuration information includes a period, it can configure the first period for waking up the first device and the duration after wake-up. For example, the configuration of the first period is similar to the configuration of the period and the on-time duration in discontinuous reception (DRX). Furthermore, the first configuration information can configure the position and duration of the on-time window within the first period.

[0107] In one implementation, the second device can configure a period for a certain type of transmission for the first device using the first configuration information. The first device can wake up before the estimated transmission based on this period. For example, the second device can configure a period for a certain type of R2D transmission, and the first device can wake up before the estimated R2D transmission arrives based on this period.

[0108] In some implementations, the application time of the first configuration information may be the same as or different from the configuration time of the first configuration information. As mentioned above, the application time of the first configuration information can be determined based on the configuration time, the time specified in the first configuration information, and / or the first time interval.

[0109] The following explanation uses the example of a first device entering a first state based on first configuration information. The starting offset for entering the first state can be represented by T. start_offset The duration of the first state can be represented by T. duration This means that the first period can be represented by P, and the offset at the end of the first state can be represented by T. end_offset It indicates. T end_offset It can be determined based on the start time, and therefore is equivalent to the duration.

[0110] Example 1: The application time of the first configuration information is the configuration time of the first configuration information. After receiving the first configuration information at time point n, the first device can apply it at time n+T. start_offset The location enters the first state. After entering the first state, the first device is in T... duration Maintain the first state within time n+T, and in n+T start_offset +T duration The position ends the first state or enters the second state. Subsequently, the first device can proceed in n+T... start_offset +P returns to the first state, and so on.

[0111] Example 2: The application time of the first configuration information is based on the first time interval T. gap Confirmed. After the first device receives the first configuration information at time point n, the time for applying the first configuration information is n+T. gap Therefore, the first device is in n+T gap +T start_offset The location has entered the first state. The first device can be in T...duration maintains the first state for n+T gap +T start_offset +T duration position, or enters the second state. Subsequently, the first device can enter the first state again at n+T gap +T start_offset +P, and so on.

[0112] When the first configuration information does not contain a period, the first configuration information can be configuration information for a certain type of transmission. For example, the first configuration information can be configuration information for a certain type of R2D transmission or D2R transmission. For another example, the first configuration information can be used for an initial access procedure. For another example, the first configuration information can be configuration in an R2D transmission other than an A-IoT paging message / random access trigger message / access occasion trigger message / message 2 (Msg2) / random ID response message / R2D upper layer data transfer message, or configuration in an A-IoT paging message / random access trigger message / access occasion trigger message / message 2 / random ID response message / R2D upper layer data transfer message.

[0113] In some implementations, the first configuration information can be carried in the first transmission, and the first configuration information can indicate whether the first device is scheduled. If scheduled, the first device can enter the second state; if not scheduled, the first device can enter the first state.

[0114] As an implementation, the first transmission can be an R2D transmission received by the first device. For example, the first device receives an R2D transmission, and after parsing the R2D transmission and finding that it is not scheduled, the first device enters the first state.

[0115] In some implementations, the first configuration information can be carried in the first transmission, and the first configuration information can indicate configuration information of a second transmission, so that the first device enters the first state or enters the second state according to the configuration information of the second transmission. The configuration information of the second transmission can include an offset between the first transmission and the second transmission and / or a transmission resource (time resource) of the second transmission. The time resource can include a time interval between the first transmission and the second transmission. For example, the first R2D transmission sent by the second device can indicate the time of the second R2D transmission. The first device enters the second state before the second R2D transmission.

[0116] As one implementation, the second transmission is the next transmission adjacent in time domain to the first transmission. For example, the first R2D transmission and the second R2D transmission are the most adjacent R2D transmissions in time domain. As another example, the first transmission (transmitted by the second device) indicates a time interval to the next R2D transmission (second transmission) in time domain.

[0117] As one implementation, the second transmission is of the same type as the first transmission. For example, the first transmission and the second transmission are both paging messages. As another example, the first transmission and the second transmission are both message 2 in a random access procedure.

[0118] As one implementation, the second transmission is the next transmission adjacent in time domain to the first transmission, and the second transmission is of the same type as the first transmission. For example, the first R2D transmission and the second R2D transmission are the most adjacent in time domain, and of the same message type.

[0119] As one implementation, the second transmission can be of a different type than the first transmission. For other types of transmissions, after receiving the first configuration information, the first device needs to enter the second state and listen to the second transmission to determine whether the second transmission schedules the first device. For example, in a command scenario, the first device needs to listen to whether there is a scheduling message for itself or a corresponding R2D transmission. As another example, when the first device receives the first transmission at time n, and the first transmission carries the first configuration information which can indicate the configuration information of an R2D transmission (second transmission), the first device can enter the second state and listen / parse whether the R2D is a scheduling R2D for itself at time n+T gap or n+T gap before entering the second state and listening / analyzing whether the R2D is a scheduling R2D for itself.

[0120] As one implementation, the first transmission is further used to indicate the identity (ID) information of the first device, so as to facilitate the first device to listen. The ID information of the first device can be carried in physical layer signaling or high layer signaling.

[0121] In some implementations, the ID information of the first device includes a random ID message, and / or an AS layer identifier (AS ID), and / or an ID information that the first device is factory pre-installed with. For example, the random ID message is a 16-bit random number generated by the first device.

[0122] In some implementations, the first transmission can be one or more of the following messages: a paging message, a message in a random access procedure, a random access trigger message, a command message. The message in the random access procedure is, for example, message 2.

[0123] As an implementation, the first transmission is a paging message. For example, the first transmission as an A-IoT paging message can configure the time interval T for the second transmission (the next paging message) to be transmitted. paging When the first device receives the first transmission at time n, the first device can enter the second state at time n+T paging , or enter the second state before time n+T paging . For another example, the first device receives the first transmission as an A-IoT paging message at time n, and the first device does not have a suitable resource to transmit a message 1 (Msg1) or does not successfully complete a random access in the resource configured by the paging message, the first device enters the first state.

[0124] The one or more parameters included in the first configuration information can have the following configurations.

[0125] Configuration 1: The second device can directly configure the parameter value. For example, a time-related parameter can be directly configured as T milliseconds / microseconds, or T symbols / slots, or X D2R / R2D chip durations, or a chip duration related to a modulation method. The modulation method is, for example, on-off keying (OOK) modulation. The chip duration related to the modulation method is, for example, the chip duration corresponding to a certain value of M in OOK-4.

[0126] Configuration 2: Some or all of the parameters in the first configuration information can correspond to a certain table in a related protocol. For example, the table can define different periods, durations, starting positions, and the like. The second device can configure an index value or a serial number corresponding to the parameters in the table through the first configuration information, so that the first device can determine the first period, the duration of maintaining the first state or the second state, and the starting time of entering the first state or the second state according to the first configuration information.

[0127] Configuration 3: Some or all of the parameters in the first configuration information can be predetermined by the protocol in advance. For example, some parameters in the first configuration information are pre-defined by the protocol. Based on this configuration, the signaling overhead can be reduced, and the energy consumed by the first device for reading and writing the memory can be reduced, and the failure caused by the first device being unable to maintain the storage due to power failure and the like can be avoided.

[0128] Configuration 4: When some parameters in the first configuration information are not configured, a default value can be used. For example, when the second device does not configure a certain parameter in the first configuration information, the first device can use a default value pre-defined by the protocol.

[0129] In some implementations, the application time of the first configuration information can include an effective time and / or an invalid time of the first configuration information. For example, the first device can receive a plurality of first configuration information in sequence. When the first device receives new first configuration information, the first device can enter the first state or enter the second state according to the new first configuration information. For another example, when the first device receives the first configuration information at time Ta, the first configuration information is effective at time Ta+Ts (or the first device starts to apply the first configuration information at Ta+Ts), and is invalid at time Ta+Ts+Td (or the first device no longer applies the first configuration information at Ta+Ts+Td). Wherein, Ts and / or Td can be configured by the second device, or can be determined in a pre-defined manner by a protocol.

[0130] Irrespective of whether the first configuration information contains a period, the first configuration information can be a signal in a specific transmission procedure configured by the first device. For example, when the first configuration information contains a period, the first device can enter the on state according to the first configuration information period, listen to A-IoT paging, message 2 or random access trigger message, or listen to a command message. For another example, the first device can enter the on state periodically, transmit DO-A service transmission, or transmit message 1, or perform D2R data transmission, etc. For another example, when the first configuration information is carried in the first transmission, the first configuration information can include transmission information of a paging message, a message 2, a random access trigger message or a command message.

[0131] The first device can enter the first state or enter the second state according to the first indication information. When the second device dynamically controls the first device to enter the first state or the second state through the first indication information, the second device can face a burst of service transmission and more flexible control of the first device.

[0132] The first indication information can include an indication corresponding to different states. In some implementations, the first indication information includes a first indication and / or a second indication, the first indication is used to indicate the first device to enter the first state, and the second indication is used to indicate the first device to enter the second state. When the first state is a sleep state, the first indication is a sleep indication. When the first state is an on state, the second indication is an on indication or a wake-up indication. For example, the first device can enter the on state according to the on indication or the wake-up indication sent by the second device.

[0133] In some implementations, the first indication information can be indicated by different signals. The first indication can be a signal corresponding to the first state, such as a sleep signal. The second indication can be a signal corresponding to the second state, such as a wake-up signal or an on signal.

[0134] The first indication and / or the second indication are also used to indicate at least one of the following information: ID information of the first device; duration of the first device entering the first state; duration of the first device entering the second state. For example, the first indication or the second indication can include the first device ID related information. For another example, the first indication or the second indication can include the duration of the first device entering a certain state.

[0135] In some implementations, the first indication or the second indication can be a specific sequence information or a specific code value. For example, the first indication or the second indication is a specific m-sequence / Golay sequence / Walsh sequence, etc. For another example, the first indication or the second indication can be a specific code value, such as “111000” or the like.

[0136] In some implementations, the first indication and the second indication can be corresponding. As an implementation, when the first indication corresponds to a first sequence and the second indication corresponds to a second sequence, the first sequence and the second sequence are the same. For example, the sequences of the first indication and the second indication indicating the same first device are the same. As an implementation, when the first indication corresponds to a first code value and the second indication corresponds to a second code value, the first code value and the second code value can be the same or different.

[0137] In the above implementation, the first code value and the second code value being different includes that the first code value and the second code value are opposite. For example, when the first code value corresponding to the first indication is “11101110”, the second code value corresponding to the second indication is “00010001”.

[0138] As an implementation, the first indication and / or the second indication are carried in physical layer signaling or high layer signaling. When the first indication and / or the second indication are carried by the physical layer, the time delay can be reduced and the energy consumption of the first device receiving the first indication / second indication can be reduced. When the first indication and / or the second indication are carried by the high layer signaling, the physical layer signaling overhead can be reduced and the physical layer resources can be saved.

[0139] The following takes the inventory scenario as an example to exemplarily describe the process of the first device determining the state according to the first indication information.

[0140] Example one, after the random access, it means that the inventory is successful, and the first device does not need to use the sensor. When the random access is completed and the sleep indication (the first indication) of the second device is received, the first device can enter the sleep state (the first state) at time n.

[0141] Example 2: After random access, the first device still needs to perform D2R transmission according to the command message or report as required in the sensor scenario. Once random access is complete and a sleep instruction is received from the second device, the first device can enter sleep mode at time n.

[0142] In the examples above, the hibernation indicator may include the duration for which the first device enters hibernation, T. duration Alternatively, the first device can determine the duration of entering the hibernation state according to the protocol, T. duration Therefore, the first device can be in time n+T. duration Entering the on state (second state) or at time n+T duration Enter the active state.

[0143] The preceding text used first configuration information and first instruction information as examples to introduce several implementation methods for the second device to send first information to the first device. As mentioned above, the first device can also determine the first information itself and enter either the first state or the second state based on the first information.

[0144] Before entering the first state or the second state based on the first information, the first device can also send the first information to the second device. The first information reported by the first device to the second device can be used by the second device to determine the subsequent state or remaining power of the first device. By sending the first information, the second device can adjust the transmission in a timely manner based on the feedback from the first device. For example, the second device can determine whether the first device can continue to receive or send based on the power information of the first device, and further decide whether to continue sending R2D transmission or have the first device send D2R transmission. Therefore, this method can avoid the first device being unable to receive or send the corresponding D2R or feedback information due to power failure after the second device sends R2D. This method can also further avoid wasting resources and improve the transmission efficiency between the second device and the first device.

[0145] After the second device receives the first information sent by the first device, the second device can send a charging signal for charging the first device based on the time when the first device enters the first state. For example, if the second device receives the state information "sleep" or the power information "insufficient" from the first device at time n, the second device can send a signal for charging the first device at time n+T1.

[0146] As one implementation, T1 is the second time interval, which can be related to the processing delay or transmission delay of the first / second device. T1 can be configured by the second device or predefined by the protocol.

[0147] In some implementations, the first information sent by the first device to the second device may include battery-related information or status information of the first device. For example, the first information may include one or more of the following: status information of the first device after sending the first information; the current battery information of the first device; the estimated time for the first device to maintain the second state; and whether the remaining battery power of the first device supports subsequent transmission.

[0148] As one implementation, the status information of the first device after sending the first information can include whether the first device is about to enter a first state or remain in a second state, i.e., state transition information. In other words, the first device can directly report the state type after sending the first information. For example, before entering a sleep state, the first device can inform the second device that it is about to enter a sleep state through the first information.

[0149] As an example, when the first device is about to run out of power or has completed a D2R transmission, it can send state transition information to the second device. In other words, the first device can report to the second device that it will transition to the first state. For instance, if the first device has successfully stored the data after a random access and no longer needs to use the sensor, it can report the subsequent state as the first state.

[0150] As another example, when the first device still has transmissions to send, it will maintain the second state when reporting to the second device. For example, when the first device needs to perform D2R transmission according to command messages after random access, or when a sensor scenario requires reporting sensor data, it will maintain the second state.

[0151] As one implementation method, after the first device enters the second state, it can inform the second device of the current battery information, that is, battery-related information. The battery information can be the remaining battery value or the percentage of the remaining battery capacity.

[0152] As one implementation, after the first device enters the second state, it can inform the second device of the estimated time it can maintain the second state, which the second device uses to determine the duration of maintaining the second state. In other words, the first device can send the estimated duration of the second state. For example, the first device can estimate the duration based on the power consumption rate of continuously monitoring R2D after sending D2R transmissions to determine the time it can maintain the second state.

[0153] As an example, the D2R transmission sent by the first device can carry the time during which it can maintain the second state after sending the D2R. The time to maintain the second state can be the time from the first device's current battery level to complete power loss, or the time during which the battery level drops from the current level to X% of the battery level. The duration of the transmission by the first device is measured in the chip duration of the D2R, or in symbols / slots / subframes / frames in NR, or in physical units (seconds / milliseconds / microseconds), etc.

[0154] As one implementation, the first device can inform the second device whether its remaining battery power supports subsequent transmissions. Subsequent transmissions can be adjacent to the transmission of the first information, or they can be transmissions that re-enter the second state. For example, when the first device has sufficient battery power, it can inform the second device that multiple transmissions are supported. The second device can then schedule resources for multiple transmissions based on this information and inform the first device. During the intervals between adjacent transmissions, the first device can enter the first state to harvest energy.

[0155] In the above implementation, subsequent transmissions can be either continuing to receive R2D transmissions or resending D2R transmissions.

[0156] As one implementation, when the first information sent by the first device includes time information, this time information needs to take into account the effects of transmission delay and sampling frequency offset, which will be discussed later. Figure 9 and Figure 10 Please provide a detailed explanation.

[0157] In some implementations, when the first device sends first information to the second device, the first information can be carried in physical layer signaling or medium access control (MAC) layer signaling. As one implementation, the first information sent by the first device to the second device can be carried in a D2R transmission. This D2R transmission can carry status information through physical layer or MAC layer signaling. This D2R transmission can also carry power-related information through physical layer or MAC layer signaling.

[0158] In some implementations, the first information is indicated by one or more bits, or by a pilot (amble). This pilot can be a preamble sequence or a midamble sequence.

[0159] As one implementation, the status information in the first message can be indicated by one or more bits. For example, the first device can use 1 bit to indicate the status after sending a D2R transmission. A bit value of "1" represents the second status after the first device has sent a D2R transmission, and a bit value of "0" represents the first status after the first device has sent a D2R transmission. The reverse is also true.

[0160] As one implementation, the battery level information in the first piece of information can be indicated using multiple bits. For example, the percentage of remaining battery power relative to the total capacity can be indicated using two bits: a bit value of "00" indicates 0%–25% remaining battery power, a bit value of "01" indicates 25%–50% remaining battery power, a bit value of "10" indicates 50%–75% remaining battery power, and a bit value of "11" indicates 75%–100% remaining battery power.

[0161] As one implementation, whether the remaining battery power supports subsequent transmissions can be indicated using one or more bits. For example, 1 bit can be used to indicate whether the remaining battery power supports continuing to receive R2D transmissions. A bit value of "1" indicates that the remaining battery power can support the first device to continue receiving R2D transmissions, and a bit value of "0" indicates that the remaining battery power cannot support the first device to receive R2D transmissions. The reverse is also true.

[0162] As one implementation, when the first information is D2R transmission, the first device can use the D2R pilot to indicate its own status information. For example, the D2R preamble / introductory code can use a specific sequence to indicate whether the first device's status after completing the D2R transmission is a first state or a second state. For instance, different pilot sequence lengths indicate different states after D2R transmission, or different pilot sequence initialization parameters indicate different states after D2R transmission, or different pilot sequence types indicate different states after D2R transmission.

[0163] In some implementations, the first device can periodically / semi-persistently / non-periodically report power-related information / status information. In other words, the first device can periodically / semi-persistently / non-periodically report first information.

[0164] As one implementation, when the first device sends first information to the second device, the sending time and the first time interval of the first information are used for the first device to enter either the first state or the second state. As mentioned earlier, when the second device sends first information to the first device, the receiving time and the first time interval of the first information are used for the first device to enter either the first state or the second state. Therefore, it can be seen that the transmission time and the first time interval of the first information can be used for the first device to enter either the first state or the second state.

[0165] It should be noted that when the first information is carried in D2R transmission, the first time interval T gap It may also include the minimum time interval T between D2R transmission and R2D reception as specified in the protocol. D2R_min For example, T gap It can be T D2R_min It could be the data transmission delay and / or the second device processing delay, or the sum of the D2R transmission time and / or processing delay and / or the minimum time interval between D2R and R2D.

[0166] In the above implementation, the transmission time of the first information can be either the start time or the end time. For example, the first device may start transmitting D2R information carrying status information at time n, or the D2R transmission carrying status information may end at time n. Similarly, the first device may start transmitting D2R information carrying battery level information at time n, or the D2R transmission carrying battery level information may end at time n.

[0167] As an example, when the status information after the first device sends the first information is in the second state, the first device determines the relevant transmission time based on the sending time of the first information and the first time interval. For example, if the sending time of the first information is n, the first device determines the relevant transmission time in n+T. gap Start listening for R2D transmissions, or, the first device is in n+T. gap Then D2R transmissions begin.

[0168] As an example, when the status information after the first device sends the first information is in the first state, the first device enters the first state based on the sending time of the first information and the first time interval. For example, if the start time or end time of sending the first information is n, the first device enters the first state in n+T. gap The system begins entering the first state. Alternatively, the first device can also proceed in n+T based on pre-configured information / predefined rules. gap +T duration Then it enters the second state to receive R2D or send D2R.

[0169] As an example, when the first device's current battery information is "sufficient" or the remaining battery is higher than a certain threshold (e.g., a percentage threshold), the first device will... gap Start listening for R2D transfers, or in n+T gap Then D2R transmissions begin.

[0170] As an example, when the first device's current battery information is "insufficient" or the remaining battery is below a certain threshold (e.g., a percentage threshold), the first device will... gapThe system begins entering the first state. Alternatively, the first device can also proceed in n+T based on pre-configured information / predefined rules. gap +T duration Then it enters the second state to receive R2D or send D2R.

[0171] As mentioned above, the first device can also enter a first state or a second state according to predefined rules. In other words, the first information can include predefined rules. Both the first device and the second device can determine the state of the first device based on these predefined rules.

[0172] In some implementations, predefined rules include one or more of the following: the first device enters a first state when the received third transmission does not schedule the first device; the first device enters a first state when the received third transmission does not contain the ID information of the first device; the first device enters a first state or remains in a second state after sending a fourth transmission; the first device enters a first state or enters a second state according to a first time interval; the first device enters a second state after its battery level reaches a set threshold. The third transmission received by the first device may be either the first or second transmission mentioned above, or it may not be either the first or second transmission mentioned above.

[0173] As one implementation, the third transmission can be an R2D transmission received by the first device. When the third transmission does not schedule the first device or does not contain the ID information of the first device, the first device enters a first state (sleep state or off state). When the third transmission schedules the first device or contains the ID information of the first device, the first device enters a second state.

[0174] As one implementation, the first device enters the first state or remains in the second state after sending the fourth transmission. The fourth transmission is, for example, a D2R transmission; that is, the first device enters the first state or remains in the second state after sending a D2R transmission. For example, if the first device receives an R2D transmission at the beginning / end of time n, and the first device is not scheduled for that R2D transmission, the first device can enter the first state at time n+T. gap Entering the first state. For example, if the first device sends a D2R transmission at time n, or if the D2R transmission sent at time n ends, the first device enters the first state at time n+T. gap Alternatively, it may enter the first state after the D2R transmission is completed.

[0175] As one implementation method, the threshold can be a battery level or a percentage of the battery's total capacity. This threshold can be configured by the second device or predefined according to the protocol. For example, when the first device's battery level reaches a certain point, such as almost fully charged, fully charged, or exceeding the set threshold, the first device enters a second state.

[0176] The above text combined Figure 6 This paper introduces several implementation methods for controlling a first device to enter a first state or a second state using first information. There are three ways to determine the first information. In method one, the first information is determined based on the configuration information or instruction information of the second device. In method two, the first device determines the first information itself and sends it to the second device. In method three, the first information is determined according to predefined rules.

[0177] The following is combined with Figure 7 and Figure 8 The two embodiments shown illustrate Method 1 and Method 2 respectively. Figure 7 A flowchart illustrating the process of controlling the state of the first device by the second device is shown. Figure 8 This is a flowchart illustrating the process of a second device reporting status information.

[0178] See Figure 7 In step S710, the first device receives first information sent by the second device. The first information can be configuration information or indication information. The second device can use the first information to control the first device to enter a sleep state or an on state.

[0179] In step S720, the first device enters either the first state or the second state based on the first information.

[0180] See Figure 8 In step S810, the first device sends first information to the second device. The first information may directly include the subsequent status information of the first device, or it may include the battery information of the first device. The first information can be sent via D2R transmission.

[0181] In step S820, the first device enters either the first state or the second state based on the first information.

[0182] It should be noted that the first device is in the second state when it sends or receives the first information. The first information received by the first device can indicate when the first device will subsequently enter the first state or the second state. The first information sent by the first device can be used to report whether the first device has entered the first state or is maintaining the second state, or it can be related to the timing of re-entering the second state.

[0183] In some implementations, the methods for controlling the first device to enter the first state and the methods for controlling the first device to enter the second state in different methods can be combined. For example, the method for controlling the first device to enter the second state in method one can be combined with the method for controlling the first device to enter the first state in method three. Another example is the combination of the method for controlling the first device to enter the second state in method three with the method for controlling the first device to enter the first state in method two.

[0184] In some implementations, the methods for controlling the first device to enter the second state from different approaches can be combined. For example, the first device needs to meet the power requirements in approach three, and also needs to receive the configuration information in approach one, and then enter the second state according to the first configuration information. Alternatively, after entering the second state, the first device may first send power / status information to the second device using approach two, then receive the instruction information from the second device according to approach one, and then maintain the second state or enter the first state according to the first instruction information.

[0185] In some implementations, the methods for controlling the first device to enter the first state from different approaches can be combined. For example, the first device enters the first state when it meets the relevant requirements of approach two or three. Alternatively, approach one and approach three can be combined. When the first device receives an R2D transmission without information scheduling the first device and receives a first instruction, the first device enters the first state.

[0186] It should be noted that the above combination methods are just examples, and there are other combination methods, which will not be elaborated here.

[0187] Regardless of the method or combination thereof used, the first device will need to listen for messages or R2D transmissions after entering the second state. The first device can listen periodically or non-periodically. If the first device directly detects the corresponding R2D transmission, it can determine the subsequent state based on the information in the R2D transmission. However, the first device may not detect the corresponding R2D transmission as planned. In this case, how the first device determines the listening result and the subsequent state is a problem that needs to be considered.

[0188] The first device can determine the monitoring result and / or decide whether to enter the first state based on the required monitoring time period or the number of R2D transmissions to be monitored. For example, if the first device does not detect the corresponding R2D transmission within the required monitoring time period, it needs to determine whether to continue monitoring. If it continues monitoring, it maintains the current state; if it does not continue monitoring, it enters the first state. Similarly, if a certain number of R2D transmissions monitored by the first device are not its own scheduled R2D transmissions, it needs to determine whether to continue monitoring and determine the subsequent state.

[0189] The time period that the first device needs to monitor can be denoted as Td. Td can be a default value predefined by the protocol, or a value configured by the second device. As an example, Td can be determined primarily based on the configuration of the second device. When the second device does not configure a value for Td, the first device can determine Td based on the default value predefined by the protocol.

[0190] If the first device does not detect the corresponding R2D transmission during its listening time within Td, the first device can directly enter the first state, continue listening for R2D transmissions, or revert to the initial step of listening for configuration information. The listening time can be the time-domain resource for the first device to enter the second state. In other words, the listening time can be determined based on the time when the first device enters the second state.

[0191] As an implementation method, for periodic listening, if the first device does not detect the corresponding R2D transmission within the listening Td time period after waking up (entering the second state), the first device enters the first state and waits for the next listening opportunity to wake up again.

[0192] As another implementation, for periodic listening, if the first device does not detect the corresponding R2D transmission within the Td time period after waking up, the first device can maintain the second state to continue listening for R2D transmissions until the corresponding R2D transmission is detected.

[0193] As another implementation method, for periodic monitoring, if the first device does not detect the corresponding R2D transmission in N consecutive monitoring opportunities, the first device can re-monitor the configuration information.

[0194] As one implementation approach, for non-periodic monitoring, if the first device does not detect the corresponding R2D transmission within the Td time period after waking up, the first device will re-monitor for configuration information. The first device can enter either the first or second state based on the new configuration information, and can also receive and send data based on the new configuration information.

[0195] As another implementation, for non-periodic listening, if the first device does not detect the corresponding R2D transmission within the Td time period after waking up, the first device can maintain the second state to continue listening for R2D transmissions until the corresponding R2D transmission is detected.

[0196] The number of R2D transmissions that the first device needs to monitor can be represented by M. M can be a default value predefined by the protocol, or a value configured by the second device. As an example, M can be determined primarily based on the configuration of the second device. When the second device does not configure a value for M, the first device can determine M based on the default value predefined by the protocol.

[0197] The following example illustrates how the first device can revert to listening to configuration information again.

[0198] Example 1: The first device enters the second state at time n and begins listening for / receiving R2D transmissions. If the first device does not listen for / receive any R2D transmission scheduled for it within time n+Td, the first device can receive new state configuration information. The first device can then enter either the first or second state based on the new configuration information, and can also perform both receiving and sending based on the new configuration information.

[0199] Example 2: At time n, the first device enters the second state and begins listening to / receiving R2D transmissions. If the M R2D transmissions listened to / received by the first device are not its own scheduled R2D transmissions, the first device can receive new state configuration information. The first device can enter either the first state or the second state based on the new configuration information, and can also perform receiving and sending based on the new configuration information.

[0200] In addition to listening, the first device may also need to send D2R transmissions after entering the second state. The D2R transmissions sent by the first device need to avoid conflicts with existing / in-progress transmissions. How to avoid conflicts is also a consideration.

[0201] In some implementations, the first device can first detect whether there is an R2D transmission on the resource. If no R2D transmission is detected, the first device can send a D2R transmission after entering the second state.

[0202] As one implementation, after entering the second state at time point n, the first device can listen for R2D transmissions for the time period Td after n. If an R2D transmission is detected, the first device can enter the first state and wait for the next time to enter the second state.

[0203] As another implementation, after entering the second state at time point n, the first device can listen for R2D transmissions for a period of time Td after n. If an R2D transmission is detected, the first device can continue listening until the R2D transmission ends, based on T... R2D_min Or T gap Start sending D2R transmission.

[0204] In some implementations, if the second device does not receive a D2R transmission from the first device within a certain period of time, the second device may send a first indication message or a charging signal for charging the first device. For example, if the second device does not receive a D2R transmission from the first device within N D2R transmission opportunities, the second device may send a signal that can charge the first device.

[0205] As mentioned earlier, time information related to the state of the first device needs to take into account the SFO (Scheduled Forward Time). The SFO is related to the timing configuration. That is, the time when the first device enters the first state or the second state is determined based on the SFO corresponding to the first device. For example, when the first device reports the time information of entering the first state or the second state to the second device, this time information also needs to take into account the SFO corresponding to the first device. Taking into account the SFO can be understood as considering the time drift caused by the SFO, in order to avoid affecting normal transmission due to time drift.

[0206] In some implementations, if the first device enters the second state prematurely due to SFO and needs to listen for or transmit, it may collide with other transmissions in the time domain. By considering SFO, collisions with previous transmissions caused by the first device entering the second state prematurely due to SFO can be avoided. For example, the time when the first device enters the second state can be accounted for due to time drift caused by SFO. Another example is that after the first device enters the second state, if there is R2D transmission in the time domain, it should wait for the R2D transmission to complete before transmitting D2R or receiving R2D.

[0207] In some implementations, the first device may enter the first state prematurely due to SFO (Simultaneous Start-of-Flight), before any transmission is complete, thus affecting normal transmission. By considering SFO, the premature entry of the first device into the first state can prevent D2R (Data Transfer-to-Relation) transmission from being incomplete. For example, the time when the first device enters the first state can account for the time drift caused by SFO. Furthermore, if there is incomplete R2D reception or D2R transmission before the first device enters the first state, it needs to complete the current R2D reception or D2R transmission before entering the first state.

[0208] In some implementations, the time drift value caused by SFO can be configured by the second device, predefined by the protocol, or calculated by the first device according to the protocol.

[0209] As an example, the time drift caused by the SFO corresponding to the first device can be expressed as T. SFO .

[0210] As an example, the maximum time drift caused by the SFO corresponding to the first device can be expressed as T. SFO_max .

[0211] As one implementation method, the second device can be directly configured with T. SFO or T SFO_max The value of T. For example, T SFO or T SFO_maxThe value can have corresponding candidate values ​​based on different state duration ranges / state periods. The second device can be configured with one of these candidate values. For example, T... SFO or T SFO_max The value can have corresponding candidate values ​​depending on the different first device types.

[0212] In the above implementation, the range of state durations can be represented by a minimum duration and a maximum duration. Table 1, taking the duration of a sleep state as an example, indicates the T values ​​corresponding to different state durations / ranges. SFO value.

[0213] Table 1

[0214] Index Dormancy duration (microseconds / chip) T SFO (μsec / chip) 1 Duration 1 / [minimum duration 1, maximum duration 1] T1 2 Duration 2 / [minimum duration 2, maximum duration 2] T2 3 Duration 3 / [minimum duration 3, maximum duration 3] T3

[0215] As an implementation method, the protocol can predefine T SFO or T SFO_max The value of T. For example, the protocol can predefine the value of T. SFO or T SFO_max The value of T has corresponding candidate values ​​depending on different state duration ranges / state periods / first device types. The first device can determine T based on the state duration range / state period / first device type. SFO or T SFO_max The value of .

[0216] As an implementation method, the protocol can specify T SFO or T SFO_max The calculation method. For example, T SFO =Duration*σ, where Duration is the duration of the first state or the second state, and σ is the SFO accuracy level of the first device.

[0217] For example, the time when the first device receives the first configuration information is n, and the time when it starts applying the first configuration information is n+T. gap Without considering SFO, the first device, based on the first configuration information, at time n+T gap +T start_offset The location enters either the first state or the second state. Considering SFO, the time it takes for the first device to enter either the first or second state is n+T. gap +T start_offset +T SFO Or n+T gap +T start_offset +T SFO_max .

[0218] To facilitate understanding, the following will be combined with... Figure 9 and Figure 10The following example illustrates a scenario where the actual state transition time differs from the configured state transition time due to SFO. Figure 9 The first device in the process transitions from a first state (charging state) to a second state (working state). Figure 10 The first device in the process transitions from the second state to the first state.

[0219] See Figure 9 The first device enters the first state at time point n1. According to the configuration information of the second device, the first device enters the second state at time point n2. When the second state is a wake-up state, time point n2 can also be represented as n. wake-up .like Figure 9 As shown, the first device may actually transition to the second state within a certain time frame. This time frame needs to take into account the SFO corresponding to the first device, for example, n²+T. SFO Or n2+T SFO_max The location. This time range is, for example, [n² - T]. SFO ,n2+T SFO ].

[0220] Depend on Figure 9 It is known that after the first device enters the first state, the time point for entering the second state can be determined based on the duration of the first state configured for the second device. During the time the first device maintains the first state, other R2D transmissions may occur. If the first device enters the second state prematurely due to time drift caused by SFO and needs to perform a transmission, it may collide with an incomplete R2D transmission.

[0221] against Figure 9 In the scenario shown, the first device can wait for other R2D transmissions to complete before entering the second state.

[0222] See Figure 10 The first device enters the second state at time point n2. According to the configuration information of the second device, the first device enters the first state at time point n3. When the first state is a sleep state, time point n3 can also be represented as n... sleep .like Figure 10 As shown, the first device may actually change to the first state within a certain time range. This time range needs to take into account the SFO corresponding to the first device, for example, n2+T. SFO Or n2+T SFO_max The location. This time range is, for example, [n³-T]. SFO ,n3+T SFO ].

[0223] Depend on Figure 10It can be seen that after the first device enters the second state, the time point for entering the first state can be determined based on the duration of the second state configured for the second device. During the time the first device maintains the second state, it may receive R2D transmissions or send D2R transmissions. If the first device enters the first state prematurely due to time drift caused by SFO, the normal transmission of the R2D or D2R transmission may be affected if the R2D transmission is not completely received or the D2R transmission is not completely sent.

[0224] against Figure 10 In the scenario shown, the first device can wait for the R2D transmission to finish receiving or the D2R transmission to finish sending before entering the first state.

[0225] The preceding text described an embodiment of a method for the first device to enter a first state or a second state based on the SFO (Signal for First Default). The first device may enter the first state prematurely due to the SFO, thus failing to complete the D2R transmission. In actual communication, there may be other scenarios where the first device may fail to complete the D2R transmission. For example, the first device may fail to complete the D2R transmission due to a power outage. In similar situations, the first device needs to inform the second device that the current D2R transmission has not been completed. How to inform the second device is a problem that needs to be considered.

[0226] In some implementations, when the first device is unable to complete a fifth transmission sent to the second device, the fifth transmission includes an indication that the transmission was not completed. That is, the first device can use the fifth transmission to inform the second device that the fifth transmission could not be completed.

[0227] As one implementation, the fifth transmission is, for example, a D2R transmission sent by the first device. For instance, when the first device is in the second state but cannot complete the D2R transmission, it sends a "not completed" indication in the D2R transmission.

[0228] As one implementation, incomplete transmission information can be indicated by one or more bits in the fifth transmission, or by pilot signals. For example, if the first device cannot complete a D2R transmission, it can carry one bit in the D2R transmission to indicate whether the transmission is complete. A bit value of "1" indicates that the D2R transmission is complete, and a bit value of "0" indicates that the D2R transmission is incomplete, and vice versa. Alternatively, if the first device cannot complete a D2R transmission, it can indicate whether the transmission is complete using pilot information. The first device can indicate that the D2R transmission is complete by the absence of a pilot signal at the end of the PDRCH, and that the transmission is incomplete by the presence of a pilot signal, and vice versa. Furthermore, if the first device may be unable to complete a D2R transmission, it can indicate whether the transmission is complete using a specific pilot sequence.

[0229] As one implementation, the indication of incomplete transmission can be carried by physical layer signaling or MAC layer signaling.

[0230] The preceding text introduced various methods for the first device to determine the first information. In actual communication, the first device may transition to a new state without knowing the first information. For example, when the first device determines the state information based on the second device's first configuration information, the first device will not receive the first configuration information during its initial power-on and access process.

[0231] In some implementations, when the first device is uncertain about the first information, it enters the second state over a second cycle. The duration of the second cycle is determined according to a predefined protocol. In other words, the first device can enter the second state based on a predefined second cycle.

[0232] As one implementation, the duration of the second cycle is less than, equal to, or greater than the duration of the third cycle. The third cycle can be the first cycle for transitioning between the first and second states, or it can be the paging cycle. Therefore, the third cycle can be the first cycle for subsequent configuration of the second device, or it can be the paging cycle during the initial access process. For example, the value of the second cycle can be less than or equal to the value of the first cycle. Similarly, the value of the second cycle can be less than or equal to the value of the cycle in which the second device sends the A-IoT paging message.

[0233] As an example, in the absence of configuration information, the first device uses the second cycle (P1) during the transition state in the random access process and the first cycle (P2) during the command / sensor process. The value of P1 is less than, less than or equal to, or greater than the value of P2. As mentioned above, P1 and / or P2 are default values ​​predefined by the protocol or configured by the second device.

[0234] As one implementation, the duration of the first cycle includes a first time period in the first state and a second time period in the second state. The duration of the second cycle includes a third time period in the first state and a fourth time period in the second state. The duration of the second time period is less than, equal to, or greater than the duration of the fourth time period, and the duration of the first time period is less than, equal to, or greater than the duration of the third time period.

[0235] As an example, when the duration of the first time period is longer than that of the third time period, the first device can support a shorter sleep time during the random access process to quickly detect the resources initially accessed, ensuring that the first device can access the network more quickly; for data transmission or other scenarios, the first device can maintain a sleep state for a longer period of time to achieve the goal of saving energy.

[0236] The following explanation uses random access and command / sensor procedures as examples. During random access, the first device maintains its second state for a duration of Ta1 (fourth time period) and its first state for a duration of Tu1 (third time period). During command / sensor procedures, the first device maintains its second state for a duration of Ta2 (second time period) and its first state for a duration of Tu2 (first time period). The values ​​of Ta1, Tu1, Ta2, and Tu2 can be default values ​​predefined by the protocol or configured by the second device.

[0237] The durations of multiple time periods satisfy the following conditions: the value of Ta1+Tu1 is less than or less than or equal to or greater than the value of Ta2+Tu2, and / or the value of Ta1 is greater than or less than or less than or equal to the value of Ta2, and / or the value of Tu1 is less than or less than or equal to or greater than the value of Tu2.

[0238] As one implementation, when the first device powers on for the first time for initial access, or if it does not receive the first configuration information, the first device enters the second state in a second cycle and listens for A-IoT paging messages. After the first device starts listening for A-IoT paging messages, it maintains the second state for a duration of T. ON T ON It can also be the default value specified in the protocol.

[0239] The preceding text introduced various scenarios related to the status information of the first device. For ease of understanding, the following examples, using different processes, illustrate the behavior of the first device through multiple embodiments.

[0240] Example 1: The process of periodically listening to paging messages during the initial access process

[0241] In Embodiment 1, the first device is in the initial access process. This initial access process can be a contention-free random access (CFRA) process or a contention-based random access (CBRA) process. The first device can determine the period P3 of the A-IoT paging message according to the configuration information of the second device or a method pre-defined by the protocol. The first device enters the second state with period P3 and listens for A-IoT paging messages.

[0242] For example, after entering the second state at time n, the first device listens for A-IoT paging messages. If the first device does not detect the scheduling of its own resources during CFRA, or does not select a suitable Msg1 resource or send Msg1 during CBRA, the first device enters the first state, and then enters the second state at time n+P3 to listen for A-IoT paging messages again.

[0243] Example 2: Command Use Case Flow

[0244] In Embodiment 2, the first device receives a command related to itself. This command may include scheduling information and / or first indication information. The scheduling information can be used by the first device to determine the time-domain resources for transmitting D2R or receiving R2D.

[0245] For example, after receiving scheduling information and a sleep signal from the second device, the first device can first enter a sleep state (first state) and then enter a second state before / at the start of D2R time-domain resources. After entering the second state, the first device can monitor whether the D2R time-domain resources are occupied. If not, the first device sends a D2R transmission.

[0246] For example, after receiving a message from the second device, if the D2R data to be sent is too long, the first device can send a portion of it on the scheduled resources and then enter the first state. Subsequently, after receiving a wake-up signal from the second device, the first device can enter the second state to send the remaining data and / or receive scheduling information from the second device.

[0247] Example 3: Sensor Use Case Flow

[0248] In Example 3, the first device is in a sensor use case-related process, such as a DO-A service. In this process, after initial access, the first device enters a first state, and at time n when data needs to be sent, it enters a second state and begins listening for R2D transmissions. If the first device does not listen for R2D transmissions or does not have suitable resources within the time Td of entering the second state, it re-enters the first state. When the first cycle of transition between the first and second states is P, the first device re-enters the second state at time n + P * m and listens for R2D scheduling information, where m is an integer greater than or equal to 0.

[0249] As can be seen from the above embodiments, during the initial access process, if the first device is unable to access the network, it can first enter the first state to collect and store energy, and wait for the next opportunity to access the network. During the process after entering the network, if the first device is not scheduled, it can first enter the first state to collect and store energy, waiting for the next scheduling opportunity.

[0250] The above text combined Figures 1 to 10 The method embodiments of this application are described in detail below. Figures 11 to 13The present application provides a detailed description of the apparatus embodiments. It should be understood that the descriptions of the apparatus embodiments correspond to the descriptions of the method embodiments; therefore, any parts not described in detail can be found in the foregoing method embodiments.

[0251] Figure 11 This is a schematic block diagram of a device for wireless communication according to an embodiment of this application. The device 1100 can be any of the first devices described above. The first device is, for example, an A-IoT device. Figure 11 The device 1100 shown includes a processing unit 1110.

[0252] The processing unit 1110 can be used to enter a first state or a second state according to the first information; wherein the first state supports the first device to perform energy harvesting, and the second state does not support the first device to perform energy harvesting.

[0253] Optionally, the device 1100 further includes a first transceiver unit, which can be used to receive the first information sent by the second device; wherein the first information includes first configuration information and / or first indication information.

[0254] Optionally, the first configuration information includes one or more of the following: a first cycle for transitioning between the first state and the second state; the duration for maintaining the first state; the duration for maintaining the second state; the start time or start offset for entering the first state; the start time or start offset for entering the second state; the time or offset for ending the first state; and the time or offset for ending the second state.

[0255] Optionally, the first configuration information is carried in the first transmission; when the first configuration information is used to indicate the configuration information of the second transmission, the processing unit is further configured to enter the first state or enter the second state according to the configuration information of the second transmission; the second transmission is the next transmission adjacent to the first transmission in the time domain, and / or the second transmission is of the same type as the first transmission.

[0256] Optionally, the processing unit 1110 is further configured to determine whether the second transmission schedules the first device.

[0257] Optionally, the first transmission is further used to indicate the ID information of the first device, the ID information being carried in physical layer signaling or higher layer signaling.

[0258] Optionally, the first transmission is one or more of the following messages: paging message, message during random access procedure, random access trigger message, and command message.

[0259] Optionally, the first indication information includes a first indication and / or a second indication, wherein the first indication is used to indicate that the first device enters the first state, and the second indication is used to indicate that the first device enters the second state.

[0260] Optionally, the first indication and / or the second indication are further used to indicate at least one of the following: the ID information of the first device; the duration of the first device entering the first state; and the duration of the first device entering the second state.

[0261] Optionally, the first indication corresponds to a first sequence or a first code value, and the second indication corresponds to a second sequence or a second code value. The first indication and the second indication satisfy one of the following: the first sequence and the second sequence are the same; the first code value and the second code value are the same; or the first code value and the second code value are different.

[0262] Optionally, the first indication and / or the second indication may be carried in physical layer signaling or higher layer signaling.

[0263] Optionally, the first information may also be used for all first devices within the coverage area of ​​the second device, or for all first devices belonging to the same device group within the coverage area of ​​the second device, or the first information may be dedicated information for the first device.

[0264] Optionally, the first configuration information is static configuration information, semi-static configuration information, or dynamic configuration information; and / or, the first indication information is static indication information, semi-static indication information, or dynamic indication information.

[0265] Optionally, the device 1100 further includes a second transceiver unit, which can be used to send the first information to the second device before the first device enters the first state or the second state based on the first information.

[0266] Optionally, the first information includes one or more of the following: status information of the first device after sending the first information; current battery information of the first device; estimated time for the first device to maintain the second state; and whether the remaining battery power of the first device supports subsequent transmission.

[0267] Optionally, the first information may be indicated by one or more bits, or the first information may be indicated by a pilot signal.

[0268] Optionally, the first information is carried in physical layer signaling or MAC layer signaling.

[0269] Optionally, the transmission time of the first information and the first time interval are used for the first device to enter the first state or the second state, and the first time interval is determined according to the configuration information and / or protocol predefined from the second device.

[0270] Optionally, the first information includes predefined rules.

[0271] Optionally, the predefined rules include one or more of the following: the first device enters the first state when the received third transmission does not schedule the first device; the first device enters the first state when the received third transmission does not contain the ID information of the first device; the first device enters the first state or remains in the second state after sending the fourth transmission; the first device enters the first state or enters the second state according to a first time interval; the first device enters the second state after its battery level reaches a set threshold.

[0272] Optionally, the time when the first device enters the first state or the second state is determined according to the SFO corresponding to the first device.

[0273] Optionally, when the first device is unable to complete the fifth transmission to the second device, the fifth transmission includes an indication that the transmission was not completed.

[0274] Optionally, when the first device is uncertain about the first information, the processing unit 1110 is further configured to enter the second state in a second cycle; the duration of the second cycle is determined according to a predefined protocol.

[0275] Optionally, the duration of the second cycle is less than, equal to, or greater than the duration of the third cycle, wherein the third cycle is the first cycle in which the first state and the second state are switched, or the paging cycle.

[0276] Optionally, the first information includes a first cycle for transitioning between the first state and the second state. The duration of the first cycle includes a first time period in the first state and a second time period in the second state. The duration of the second cycle includes a third time period in the first state and a fourth time period in the second state. The duration of the second time period is less than, equal to, or greater than the duration of the fourth time period. The duration of the first time period is less than, equal to, or greater than the duration of the third time period.

[0277] Optionally, the device 1100 further includes a third transceiver unit, which can be used to receive a charging signal sent by the second device when the first device is in the first state.

[0278] Optionally, the first state also supports the first device to perform timing.

[0279] Optionally, the second state is one of the following: the second state supports communication between the first device and the second device; the second state does not support the first device to transmit and receive data; the second state only supports the first device to listen for and time data transmission.

[0280] Optionally, the first device is an A-IoT device, and the second device communicating with the first device is a network device, a terminal device, a relay node, or an auxiliary node.

[0281] Optionally, the processing unit 1110 in device 1100 may be a processor 1310, and device 1100 may further include a memory 1320 and a transceiver 1330, specifically as follows: Figure 13 As shown.

[0282] Figure 12 This is a schematic block diagram of another device for wireless communication according to an embodiment of this application. The device 1200 can be any of the network devices described above. Figure 12 The device 1200 shown includes a transceiver unit 1210.

[0283] The transceiver unit 1210 can be used to send first information to the first device or receive first information sent by the first device; wherein the first information is used for the first device to enter a first state or a second state, the first state supports the first device to perform energy harvesting, and the second state does not support the first device to perform energy harvesting.

[0284] Optionally, when the second device sends the first information to the first device, the first information includes first configuration information and / or first indication information.

[0285] Optionally, the first configuration information includes one or more of the following: a first cycle for transitioning between the first state and the second state; the duration for maintaining the first state; the duration for maintaining the second state; the start time or start offset for entering the first state; the start time or start offset for entering the second state; the time or offset for ending the first state; and the time or offset for ending the second state.

[0286] Optionally, the first configuration information is carried in the first transmission. When the first configuration information is used to indicate the configuration information of the second transmission, the configuration information of the second transmission is used for the first device to enter the first state or enter the second state. The second transmission is the next transmission adjacent to the first transmission in the time domain, and / or the second transmission is of the same type as the first transmission.

[0287] Optionally, the second transmission may schedule the first device to determine whether to enter the first state or the second state.

[0288] Optionally, the first transmission is further used to indicate the ID information of the first device, the ID information being carried in physical layer signaling or higher layer signaling.

[0289] Optionally, the first transmission is one or more of the following messages: paging message, message during random access procedure, random access trigger message, and command message.

[0290] Optionally, the first indication information includes a first indication and / or a second indication, wherein the first indication is used to indicate that the first device enters the first state, and the second indication is used to indicate that the first device enters the second state.

[0291] Optionally, the first indication and / or the second indication are further used to indicate at least one of the following: the ID information of the first device; the duration of the first device entering the first state; and the duration of the first device entering the second state.

[0292] Optionally, the first indication corresponds to a first sequence or a first code value, and the second indication corresponds to a second sequence or a second code value. The first indication and the second indication satisfy one of the following: the first sequence and the second sequence are the same; the first code value and the second code value are the same; or the first code value and the second code value are different.

[0293] Optionally, the first indication and / or the second indication may be carried in physical layer signaling or higher layer signaling.

[0294] Optionally, the first information may also be used for all first devices within the coverage area of ​​the second device, or for all first devices belonging to the same device group within the coverage area of ​​the second device, or the first information may be dedicated information for the first device.

[0295] Optionally, the first configuration information is static configuration information, semi-static configuration information, or dynamic configuration information; and / or, the first indication information is static indication information, semi-static indication information, or dynamic indication information.

[0296] Optionally, when the second device receives the first information sent by the first device, the first information includes one or more of the following: status information after the first device sent the first information; the current battery level of the first device; the estimated time for the first device to maintain the second status; and whether the remaining battery level of the first device supports subsequent transmission.

[0297] Optionally, the first information may be indicated by one or more bits, or the first information may be indicated by a pilot signal.

[0298] Optionally, the first information is carried in physical layer signaling or MAC layer signaling.

[0299] Optionally, the transmission time of the first information and the first time interval are used for the first device to enter the first state or the second state, and the first time interval is determined according to the configuration information and / or protocol predefined of the second device.

[0300] Optionally, the first information includes predefined rules.

[0301] Optionally, the predefined rules include one or more of the following: the first device enters the first state when the received third transmission does not schedule the first device; the first device enters the first state when the received third transmission does not contain the ID information of the first device; the first device enters the first state or remains in the second state after sending the fourth transmission; the first device enters the first state or enters the second state according to a first time interval; the first device enters the second state after its battery level reaches a set threshold.

[0302] Optionally, the time when the first device enters the first state or the second state is determined according to the SFO corresponding to the first device.

[0303] Optionally, when the first device is unable to complete the fifth transmission to the second device, the fifth transmission includes an indication that the transmission was not completed.

[0304] Optionally, when the first device is uncertain about the first information, the second cycle is used for the first device to enter the second state, and the duration of the second cycle is determined according to a predefined protocol.

[0305] Optionally, the duration of the second cycle is less than, equal to, or greater than the duration of the third cycle, wherein the third cycle is the first cycle in which the first state and the second state are switched, or the paging cycle.

[0306] Optionally, the first information includes a first cycle for transitioning between the first state and the second state. The duration of the first cycle includes a first time period in the first state and a second time period in the second state. The duration of the second cycle includes a third time period in the first state and a fourth time period in the second state. The duration of the second time period is less than, equal to, or greater than the duration of the fourth time period. The duration of the first time period is less than, equal to, or greater than the duration of the third time period.

[0307] Optionally, when the first device is in the first state, the transceiver unit is further configured to send a charging signal to the first device.

[0308] Optionally, the first state also supports the first device to perform timing.

[0309] Optionally, the second state is one of the following: the second state supports communication between the first device and the second device; the second state does not support the first device to transmit and receive data; the second state only supports the first device to listen for and time data transmission.

[0310] Optionally, the first device is an A-IoT device, and the second device is a network device, a terminal device, a relay node, or an auxiliary node.

[0311] Optionally, the transceiver unit 1210 in device 1200 can be a transceiver 1330, and device 1200 may further include a processor 1310 and a memory 1320, specifically as follows: Figure 13 As shown.

[0312] Figure 13 The diagram shown is a structural schematic of a communication device according to an embodiment of this application. Figure 13 The dashed lines indicate that the unit or module is optional. The device 1300 can be used to implement the methods described in the above method embodiments. The device 1300 can be a chip, a terminal device, or a network device.

[0313] Apparatus 1300 may include one or more processors 1310. The processor 1310 may support apparatus 1300 in implementing the methods described in the preceding method embodiments. The processor 1310 may be a general-purpose processor or a special-purpose processor. For example, the processor may be a central processing unit (CPU). Alternatively, the processor may 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 gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor or any conventional processor.

[0314] The apparatus 1300 may further include one or more memories 1320. The memories 1320 store a program that can be executed by the processor 1310, causing the processor 1310 to perform the methods described in the preceding method embodiments. The memories 1320 may be independent of the processor 1310 or integrated into the processor 1310.

[0315] The device 1300 may also include a transceiver 1330. The processor 1310 can communicate with other devices or chips via the transceiver 1330. For example, the processor 1310 can send and receive data with other devices or chips via the transceiver 1330.

[0316] This application also provides a computer-readable storage medium for storing a program. This computer-readable storage medium can be applied to a terminal device or network device provided in this application embodiment, and the program causes a computer to execute the methods performed by the A-IoT device, terminal device, or network device in various embodiments of this application.

[0317] The computer-readable storage medium can be any available medium that a computer can read, or a data storage device such as a server or data center that integrates one or more available media. The available medium can be magnetic media (e.g., floppy disks, hard disks, magnetic tapes), optical media (e.g., digital video discs, DVDs), or semiconductor media (e.g., solid-state disks, SSDs), etc.

[0318] This application also provides a computer program product. The computer program product includes a program. This computer program product can be applied to the A-IoT device, terminal device, or network device provided in the embodiments of this application, and the program causes a computer to execute the methods performed by the A-IoT device, terminal device, or network device in the various embodiments of this application.

[0319] In the above embodiments, implementation can be achieved, in whole or in part, through software, hardware, firmware, or any combination thereof. When implemented using software, it can be implemented, in whole or in part, as 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 this application are generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, the computer instructions can be transmitted from one website, computer, server, or data center to another via wired (e.g., coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means.

[0320] This application also provides a computer program. This computer program can be applied to the A-IoT device, terminal device, or network device provided in this application embodiment, and the computer program causes the computer to execute the methods performed by the A-IoT device, terminal device, or network device in the various embodiments of this application.

[0321] In this application, the terms "system" and "network" are used interchangeably. Furthermore, the terminology used in this application is only for explaining specific embodiments of the application and is not intended to limit the application. The terms "first," "second," "third," and "fourth," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish different objects, not to describe a specific order. In addition, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.

[0322] In the embodiments of this application, the term "instruction" can be a direct instruction, an indirect instruction, or an indication of a relationship. For example, A instructing B can mean that A directly instructs B, such as B being able to obtain information through A; it can also mean that A indirectly instructs B, such as A instructing C, so B can obtain information through C; or it can mean that there is a relationship between A and B.

[0323] In the embodiments of this application, the term "correspondence" may indicate a direct or indirect correspondence between two things, or an association between two things, or a relationship such as instruction and being instructed, configuration and being configured.

[0324] In the embodiments of this application, "predefined" or "preconfigured" can be implemented by pre-storing corresponding codes, tables, or other means that can be used to indicate relevant information in the device (e.g., including terminal devices and network devices). This application does not limit the specific implementation method. For example, predefined can refer to what is defined in the protocol.

[0325] In the embodiments of this application, the term "protocol" may refer to standard protocols in the field of communications, such as LTE protocols, NR protocols, and related protocols applied in future communication systems. This application does not limit the scope of these protocols.

[0326] In the embodiments of this application, determining B based on A does not mean determining B solely based on A; B can also be determined based on A and / or other information.

[0327] In the embodiments of this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0328] In the embodiments of this application, the order of the above-mentioned process numbers does not imply the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this application.

[0329] In the several embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection between apparatuses or units may be electrical, mechanical, or other forms.

[0330] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0331] In addition, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit.

[0332] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A method for wireless communication, characterized in that, include: The first device enters either the first state or the second state based on the first information; In this state, the first state supports the first device in energy harvesting, while the second state does not support the first device in energy harvesting.

2. The method according to claim 1, characterized in that, The method further includes: The first device receives the first information sent by the second device; The first information includes first configuration information and / or first indication information.

3. The method according to claim 2, characterized in that, The first configuration information includes one or more of the following: The first cycle in which the first state and the second state transition; The duration of maintaining the first state; The duration of maintaining the second state; The start time or start offset for entering the first state; The start time or start offset for entering the second state; The time or offset at which the first state ends; The time or offset at which the second state ends.

4. The method according to claim 2 or 3, characterized in that, The first configuration information is carried in the first transmission; The first device enters a first state or a second state based on the first information, including: When the first configuration information is used to indicate the configuration information of the second transmission, the first device enters the first state or the second state according to the configuration information of the second transmission. Wherein, the second transmission is the next transmission in the time domain adjacent to the first transmission, and / or the second transmission is of the same type as the first transmission.

5. The method according to claim 4, characterized in that, The method further includes: The first device determines whether the second transmission should be scheduled by the first device.

6. The method according to claim 4 or 5, characterized in that, The first transmission is also used to indicate the identification ID information of the first device, which is carried in physical layer signaling or higher layer signaling.

7. The method according to any one of claims 4 to 6, characterized in that, The first transmission is one or more of the following messages: paging message, message during random access procedure, random access trigger message, and command message.

8. The method according to claim 2, characterized in that, The first indication information includes a first indication and / or a second indication, wherein the first indication is used to indicate that the first device enters the first state, and the second indication is used to indicate that the first device enters the second state.

9. The method according to claim 8, characterized in that, The first indication and / or the second indication are also used to indicate at least one of the following information: The ID information of the first device; The duration for which the first device enters the first state; The duration during which the first device enters the second state.

10. The method according to claim 8 or 9, characterized in that, The first indication corresponds to a first sequence or a first code value, and the second indication corresponds to a second sequence or a second code value, wherein the first indication and the second indication satisfy one of the following: The first sequence and the second sequence are the same; The first code value and the second code value are the same; The first code value and the second code value are different.

11. The method according to any one of claims 8 to 10, characterized in that, The first indication and / or the second indication are carried in physical layer signaling or higher layer signaling.

12. The method according to any one of claims 2 to 11, characterized in that, The first information may also be used for all first devices within the coverage area of ​​the second device, or for all first devices belonging to the same device group within the coverage area of ​​the second device, or for the first information to be specific information of the first device.

13. The method according to any one of claims 2 to 12, characterized in that, The first configuration information is static configuration information, or semi-static configuration information, or dynamic configuration information; and / or, The first indication information is static indication information, semi-static indication information, or dynamic indication information.

14. The method according to any one of claims 1 to 13, characterized in that, Before the first device enters the first state or the second state based on the first information, the method further includes: The first device sends the first information to the second device.

15. The method according to claim 14, characterized in that, The first information includes one or more of the following: Status information of the first device after sending the first information; The current battery level of the first device; The estimated time for the first device to maintain the second state; Whether the remaining power of the first device can support subsequent transmission.

16. The method according to claim 14 or 15, characterized in that, The first information is indicated by one or more bits, or the first information is indicated by a pilot signal.

17. The method according to any one of claims 14 to 16, characterized in that, The first information is carried in physical layer signaling or media access control (MAC) layer signaling.

18. The method according to any one of claims 1 to 17, characterized in that, The transmission time of the first information and the first time interval are used for the first device to enter the first state or the second state, and the first time interval is determined according to the configuration information and / or protocol predefined from the second device.

19. The method according to any one of claims 1 to 18, characterized in that, The first piece of information includes predefined rules.

20. The method according to claim 19, characterized in that, The predefined rules include one or more of the following: The first device enters the first state when the third transmission it receives does not schedule the first device; The device enters the first state when the third transmission received by the first device does not contain the ID information of the first device. The first device enters the first state or remains in the second state after sending the fourth transmission; The first device enters the first state or the second state according to the first time interval; The first device enters the second state after its battery level reaches a set threshold.

21. The method according to any one of claims 1 to 20, characterized in that, The time when the first device enters the first state or the second state is determined according to the sampling frequency offset (SFO) corresponding to the first device.

22. The method according to any one of claims 1 to 22, characterized in that, When the first device is unable to complete the fifth transmission to the second device, the fifth transmission includes an indication that the transmission was not completed.

23. The method according to any one of claims 1 to 22, characterized in that, The method further includes: When the first device is uncertain about the first information, the first device enters the second state in a second cycle; The duration of the second cycle is determined according to a predefined protocol.

24. The method according to claim 23, characterized in that, The duration of the second cycle is less than, equal to or greater than the duration of the third cycle, wherein the third cycle is the first cycle in which the first state and the second state are switched, or the paging cycle.

25. The method according to claim 23 or 24, characterized in that, The first information includes a first cycle of transition between the first state and the second state. The duration of the first cycle includes a first time period in the first state and a second time period in the second state. The duration of the second cycle includes a third time period in the first state and a fourth time period in the second state. The duration of the second time period is less than, equal to, or greater than the duration of the fourth time period. The duration of the first time period is less than, equal to, or greater than the duration of the third time period.

26. The method according to any one of claims 1 to 25, characterized in that, The method further includes: When the first device is in the first state, the first device receives a charging signal sent by the second device.

27. The method according to any one of claims 1 to 26, characterized in that, The first state also supports the first device in performing timing.

28. The method according to any one of claims 1 to 27, characterized in that, The second state is one of the following: The second state supports communication between the first device and the second device; The second state does not support the first device in transmitting or receiving data. The second state only supports the first device to perform transmission monitoring and timing.

29. The method according to any one of claims 1 to 28, characterized in that, The first device is an environmental Internet of Things (A-IoT) device, and the second device communicating with the first device is a network device, a terminal device, a relay node, or an auxiliary node.

30. A method for wireless communication, characterized in that, include: The second device sends the first information to the first device; or, The second device receives the first information sent by the first device; The first information is used for the first device to enter a first state or a second state. The first state supports the first device to perform energy harvesting, while the second state does not support the first device to perform energy harvesting.

31. The method according to claim 30, characterized in that, When the second device sends the first information to the first device, the first information includes first configuration information and / or first indication information.

32. The method according to claim 31, characterized in that, The first configuration information includes one or more of the following: The first cycle in which the first state and the second state transition; The duration of maintaining the first state; The duration of maintaining the second state; The start time or start offset for entering the first state; The start time or start offset for entering the second state; The time or offset at which the first state ends; The time or offset at which the second state ends.

33. The method according to claim 31 or 32, characterized in that, The first configuration information is carried in the first transmission. When the first configuration information is used to indicate the configuration information of the second transmission, the configuration information of the second transmission is used for the first device to enter the first state or enter the second state. The second transmission is the next transmission adjacent to the first transmission in the time domain, and / or the second transmission is of the same type as the first transmission.

34. The method according to claim 33, characterized in that, Whether the second transmission schedules the first device is used by the first device to determine whether to enter the first state or the second state.

35. The method according to claim 33 or 34, characterized in that, The first transmission is also used to indicate the identification ID information of the first device, which is carried in physical layer signaling or higher layer signaling.

36. The method according to any one of claims 31 to 35, characterized in that, The first transmission is one or more of the following messages: paging message, message during random access procedure, random access trigger message, and command message.

37. The method according to claim 31, characterized in that, The first indication information includes a first indication and / or a second indication, wherein the first indication is used to indicate that the first device enters the first state, and the second indication is used to indicate that the first device enters the second state.

38. The method according to claim 37, characterized in that, The first indication and / or the second indication are also used to indicate at least one of the following information: The ID information of the first device; The duration for which the first device enters the first state; The duration during which the first device enters the second state.

39. The method according to claim 37 or 38, characterized in that, The first indication corresponds to a first sequence or a first code value, and the second indication corresponds to a second sequence or a second code value, wherein the first indication and the second indication satisfy one of the following: The first sequence and the second sequence are the same; The first code value and the second code value are the same; The first code value and the second code value are different.

40. The method according to any one of claims 37 to 39, characterized in that, The first indication and / or the second indication are carried in physical layer signaling or higher layer signaling.

41. The method according to any one of claims 31 to 40, characterized in that, The first information may also be used for all first devices within the coverage area of ​​the second device, or for all first devices belonging to the same device group within the coverage area of ​​the second device, or for the first information to be specific information of the first device.

42. The method according to any one of claims 31 to 41, characterized in that, The first configuration information is static configuration information, or semi-static configuration information, or dynamic configuration information; and / or, The first indication information is static indication information, semi-static indication information, or dynamic indication information.

43. The method according to any one of claims 30 to 42, characterized in that, When the second device receives the first information sent by the first device, the first information includes one or more of the following: Status information of the first device after sending the first information; The current battery level of the first device; The estimated time for the first device to maintain the second state; Whether the remaining power of the first device can support subsequent transmission.

44. The method according to claim 43, characterized in that, The first information is indicated by one or more bits, or the first information is indicated by a pilot signal.

45. The method according to claim 43 or 44, characterized in that, The first information is carried in physical layer signaling or media access control (MAC) layer signaling.

46. ​​The method according to any one of claims 30 to 45, characterized in that, The transmission time of the first information and the first time interval are used for the first device to enter the first state or the second state, and the first time interval is determined according to the configuration information and / or protocol predefined of the second device.

47. The method according to any one of claims 30 to 46, characterized in that, The first piece of information includes predefined rules.

48. The method according to claim 47, characterized in that, The predefined rules include one or more of the following: The first device enters the first state when the third transmission it receives does not schedule the first device; The device enters the first state when the third transmission received by the first device does not contain the ID information of the first device. The first device enters the first state or remains in the second state after sending the fourth transmission; The first device enters the first state or the second state according to the first time interval; The first device enters the second state after its battery level reaches a set threshold.

49. The method according to any one of claims 30 to 48, characterized in that, The time when the first device enters the first state or the second state is determined according to the sampling frequency offset (SFO) corresponding to the first device.

50. The method according to any one of claims 30 to 49, characterized in that, When the first device is unable to complete the fifth transmission to the second device, the fifth transmission includes an indication that the transmission was not completed.

51. The method according to any one of claims 30 to 50, characterized in that, When the first device is uncertain about the first information, the second cycle is used for the first device to enter the second state, and the duration of the second cycle is determined according to the protocol predefined.

52. The method according to claim 51, characterized in that, The duration of the second cycle is less than, equal to or greater than the duration of the third cycle, wherein the third cycle is the first cycle in which the first state and the second state are switched, or the paging cycle.

53. The method according to claim 51 or 52, characterized in that, The first information includes a first cycle of transition between the first state and the second state. The duration of the first cycle includes a first time period in the first state and a second time period in the second state. The duration of the second cycle includes a third time period in the first state and a fourth time period in the second state. The duration of the second time period is less than, equal to, or greater than the duration of the fourth time period. The duration of the first time period is less than, equal to, or greater than the duration of the third time period.

54. The method according to any one of claims 30 to 53, characterized in that, The method further includes: When the first device is in the first state, the second device sends a charging signal to the first device.

55. The method according to any one of claims 30 to 54, characterized in that, The first state also supports the first device in performing timing.

56. The method according to any one of claims 30 to 55, characterized in that, The second state is one of the following: The second state supports communication between the first device and the second device; The second state does not support the first device in transmitting or receiving data. The second state only supports the first device to perform transmission monitoring and timing.

57. The method according to any one of claims 30 to 56, characterized in that, The first device is an environmental Internet of Things (A-IoT) device, and the second device is a network device, a terminal device, a relay node, or an auxiliary node.

58. A device for wireless communication, characterized in that, The device is a first device, the device comprising: The processing unit is used to enter a first state or a second state based on the first information; In this state, the first state supports the first device in energy harvesting, while the second state does not support the first device in energy harvesting.

59. The apparatus according to claim 58, characterized in that, The device further includes: The first transceiver unit is used to receive the first information sent by the second device; The first information includes first configuration information and / or first indication information.

60. The apparatus according to claim 59, characterized in that, The first configuration information includes one or more of the following: The first cycle in which the first state and the second state transition; The duration of maintaining the first state; The duration of maintaining the second state; The start time or start offset for entering the first state; The start time or start offset for entering the second state; The time or offset at which the first state ends; The time or offset at which the second state ends.

61. The apparatus according to claim 59 or 60, characterized in that, The first configuration information is carried in the first transmission; when the first configuration information is used to indicate the configuration information of the second transmission, the processing unit is further used to enter the first state or enter the second state according to the configuration information of the second transmission; the second transmission is the next transmission adjacent to the first transmission in the time domain, and / or the second transmission is of the same type as the first transmission.

62. The apparatus according to claim 61, characterized in that, The processing unit is also configured to determine whether the second transmission schedules the first device.

63. The apparatus according to claim 61 or 62, characterized in that, The first transmission is also used to indicate the identification ID information of the first device, which is carried in physical layer signaling or higher layer signaling.

64. The apparatus according to any one of claims 61 to 63, characterized in that, The first transmission is one or more of the following messages: paging message, message during random access procedure, random access trigger message, and command message.

65. The apparatus according to claim 59, characterized in that, The first indication information includes a first indication and / or a second indication, wherein the first indication is used to indicate that the first device enters the first state, and the second indication is used to indicate that the first device enters the second state.

66. The apparatus according to claim 65, characterized in that, The first indication and / or the second indication are also used to indicate at least one of the following information: The ID information of the first device; The duration for which the first device enters the first state; The duration during which the first device enters the second state.

67. The apparatus according to claim 65 or 66, characterized in that, The first indication corresponds to a first sequence or a first code value, and the second indication corresponds to a second sequence or a second code value, wherein the first indication and the second indication satisfy one of the following: The first sequence and the second sequence are the same; The first code value and the second code value are the same; The first code value and the second code value are different.

68. The apparatus according to any one of claims 65 to 67, characterized in that, The first indication and / or the second indication are carried in physical layer signaling or higher layer signaling.

69. The apparatus according to any one of claims 59 to 68, characterized in that, The first information may also be used for all first devices within the coverage area of ​​the second device, or for all first devices belonging to the same device group within the coverage area of ​​the second device, or for the first information to be specific information of the first device.

70. The apparatus according to any one of claims 59 to 69, characterized in that, The first configuration information is static configuration information, or semi-static configuration information, or dynamic configuration information; and / or, The first indication information is static indication information, semi-static indication information, or dynamic indication information.

71. The apparatus according to any one of claims 58 to 70, characterized in that, The device further includes: The second transceiver unit is used to send the first information to the second device before the first device enters the first state or the second state based on the first information.

72. The apparatus according to claim 71, characterized in that, The first information includes one or more of the following: Status information of the first device after sending the first information; The current battery level of the first device; The estimated time for the first device to maintain the second state; Whether the remaining power of the first device can support subsequent transmission.

73. The apparatus according to claim 71 or 72, characterized in that, The first information is indicated by one or more bits, or the first information is indicated by a pilot signal.

74. The apparatus according to any one of claims 71 to 73, characterized in that, The first information is carried in physical layer signaling or media access control (MAC) layer signaling.

75. The apparatus according to any one of claims 58 to 74, characterized in that, The transmission time of the first information and the first time interval are used for the first device to enter the first state or the second state, and the first time interval is determined according to the configuration information and / or protocol predefined from the second device.

76. The apparatus according to any one of claims 58 to 75, characterized in that, The first piece of information includes predefined rules.

77. The apparatus according to claim 76, characterized in that, The predefined rules include one or more of the following: The first device enters the first state when the third transmission it receives does not schedule the first device; The device enters the first state when the third transmission received by the first device does not contain the ID information of the first device. The first device enters the first state or remains in the second state after sending the fourth transmission; The first device enters the first state or the second state according to the first time interval; The first device enters the second state after its battery level reaches a set threshold.

78. The apparatus according to any one of claims 58 to 77, characterized in that, The time when the first device enters the first state or the second state is determined according to the sampling frequency offset (SFO) corresponding to the first device.

79. The apparatus according to any one of claims 58 to 78, characterized in that, When the first device is unable to complete the fifth transmission to the second device, the fifth transmission includes an indication that the transmission was not completed.

80. The apparatus according to any one of claims 58 to 79, characterized in that, When the first device is uncertain about the first information, the processing unit is further configured to enter the second state in a second cycle; the duration of the second cycle is determined according to a predefined protocol.

81. The apparatus according to claim 80, characterized in that, The duration of the second cycle is less than, equal to or greater than the duration of the third cycle, wherein the third cycle is the first cycle in which the first state and the second state are switched, or the paging cycle.

82. The apparatus according to claim 80 or 81, characterized in that, The first information includes a first cycle of transition between the first state and the second state. The duration of the first cycle includes a first time period in the first state and a second time period in the second state. The duration of the second cycle includes a third time period in the first state and a fourth time period in the second state. The duration of the second time period is less than, equal to, or greater than the duration of the fourth time period. The duration of the first time period is less than, equal to, or greater than the duration of the third time period.

83. The apparatus according to any one of claims 58 to 82, characterized in that, The device further includes: The third transceiver unit is used to receive a charging signal sent by the second device when the first device is in the first state.

84. The apparatus according to any one of claims 58 to 83, characterized in that, The first state also supports the first device in performing timing.

85. The apparatus according to any one of claims 58 to 84, characterized in that, The second state is one of the following: The second state supports communication between the first device and the second device; The second state does not support the first device in transmitting or receiving data. The second state only supports the first device to perform transmission monitoring and timing.

86. The apparatus according to any one of claims 58 to 85, characterized in that, The first device is an environmental Internet of Things (A-IoT) device, and the second device communicating with the first device is a network device, a terminal device, a relay node, or an auxiliary node.

87. An apparatus for wireless communication, characterized in that, The device is a second device, and the device includes: The transceiver unit is used to send first information to the first device, or to receive first information sent by the first device; The first information is used for the first device to enter a first state or a second state. The first state supports the first device to perform energy harvesting, while the second state does not support the first device to perform energy harvesting.

88. The apparatus according to claim 87, characterized in that, When the second device sends the first information to the first device, the first information includes first configuration information and / or first indication information.

89. The apparatus according to claim 88, characterized in that, The first configuration information includes one or more of the following: The first cycle in which the first state and the second state transition; The duration of maintaining the first state; The duration of maintaining the second state; The start time or start offset for entering the first state; The start time or start offset for entering the second state; The time or offset at which the first state ends; The time or offset at which the second state ends.

90. The apparatus according to claim 88 or 89, characterized in that, The first configuration information is carried in the first transmission. When the first configuration information is used to indicate the configuration information of the second transmission, the configuration information of the second transmission is used for the first device to enter the first state or enter the second state. The second transmission is the next transmission adjacent to the first transmission in the time domain, and / or the second transmission is of the same type as the first transmission.

91. The apparatus according to claim 90, characterized in that, Whether the second transmission schedules the first device is used by the first device to determine whether to enter the first state or the second state.

92. The apparatus according to claim 90 or 91, characterized in that, The first transmission is also used to indicate the identification ID information of the first device, which is carried in physical layer signaling or higher layer signaling.

93. The apparatus according to any one of claims 88 to 92, characterized in that, The first transmission is one or more of the following messages: paging message, message during random access procedure, random access trigger message, and command message.

94. The apparatus according to claim 88, characterized in that, The first indication information includes a first indication and / or a second indication, wherein the first indication is used to indicate that the first device enters the first state, and the second indication is used to indicate that the first device enters the second state.

95. The apparatus according to claim 94, characterized in that, The first indication and / or the second indication are also used to indicate at least one of the following information: The ID information of the first device; The duration for which the first device enters the first state; The duration during which the first device enters the second state.

96. The apparatus according to claim 94 or 95, characterized in that, The first indication corresponds to a first sequence or a first code value, and the second indication corresponds to a second sequence or a second code value, wherein the first indication and the second indication satisfy one of the following: The first sequence and the second sequence are the same; The first code value and the second code value are the same; The first code value and the second code value are different.

97. The apparatus according to any one of claims 94 to 96, characterized in that, The first indication and / or the second indication are carried in physical layer signaling or higher layer signaling.

98. The apparatus according to any one of claims 88 to 97, characterized in that, The first information may also be used for all first devices within the coverage area of ​​the second device, or for all first devices belonging to the same device group within the coverage area of ​​the second device, or for the first information to be specific information of the first device.

99. The apparatus according to any one of claims 88 to 98, characterized in that, The first configuration information is static configuration information, or semi-static configuration information, or dynamic configuration information; and / or, The first indication information is static indication information, semi-static indication information, or dynamic indication information.

100. The apparatus according to any one of claims 87 to 99, characterized in that, When the second device receives the first information sent by the first device, the first information includes one or more of the following: Status information of the first device after sending the first information; The current battery level of the first device; The estimated time for the first device to maintain the second state; Whether the remaining power of the first device can support subsequent transmission.

101. The apparatus according to claim 100, characterized in that, The first information is indicated by one or more bits, or the first information is indicated by a pilot signal.

102. The apparatus according to claim 100 or 101, characterized in that, The first information is carried in physical layer signaling or media access control (MAC) layer signaling.

103. The apparatus according to any one of claims 87 to 102, characterized in that, The transmission time of the first information and the first time interval are used for the first device to enter the first state or the second state, and the first time interval is determined according to the configuration information and / or protocol predefined of the second device.

104. The apparatus according to any one of claims 87 to 103, characterized in that, The first piece of information includes predefined rules.

105. The apparatus according to claim 104, characterized in that, The predefined rules include one or more of the following: The first device enters the first state when the third transmission it receives does not schedule the first device; The device enters the first state when the third transmission received by the first device does not contain the ID information of the first device. The first device enters the first state or remains in the second state after sending the fourth transmission; The first device enters the first state or the second state according to the first time interval; The first device enters the second state after its battery level reaches a set threshold.

106. The apparatus according to any one of claims 87 to 105, characterized in that, The time when the first device enters the first state or the second state is determined according to the sampling frequency offset (SFO) corresponding to the first device.

107. The apparatus according to any one of claims 87 to 106, characterized in that, When the first device is unable to complete the fifth transmission to the second device, the fifth transmission includes an indication that the transmission was not completed.

108. The apparatus according to any one of claims 87 to 107, characterized in that, When the first device is uncertain about the first information, the second cycle is used for the first device to enter the second state, and the duration of the second cycle is determined according to the protocol predefined.

109. The apparatus according to claim 108, characterized in that, The duration of the second cycle is less than, equal to or greater than the duration of the third cycle, wherein the third cycle is the first cycle in which the first state and the second state are switched, or the paging cycle.

110. The apparatus according to claim 108 or 109, characterized in that, The first information includes a first cycle of transition between the first state and the second state. The duration of the first cycle includes a first time period in the first state and a second time period in the second state. The duration of the second cycle includes a third time period in the first state and a fourth time period in the second state. The duration of the second time period is less than, equal to, or greater than the duration of the fourth time period. The duration of the first time period is less than, equal to, or greater than the duration of the third time period.

111. The apparatus according to any one of claims 87 to 110, characterized in that, When the first device is in the first state, the transceiver unit is also used to send a charging signal to the first device.

112. The apparatus according to any one of claims 87 to 111, characterized in that, The first state also supports the first device in performing timing.

113. The apparatus according to any one of claims 87 to 114, characterized in that, The second state is one of the following: The second state supports communication between the first device and the second device; The second state does not support the first device in transmitting or receiving data. The second state only supports the first device to perform transmission monitoring and timing.

114. The apparatus according to any one of claims 87 to 113, characterized in that, The first device is an environmental Internet of Things (A-IoT) device, and the second device is a network device, a terminal device, a relay node, or an auxiliary node.

115. A communication device, characterized in that, It includes a memory and a processor, the memory being used to store a program, and the processor being used to invoke the program in the memory to perform the method as described in any one of claims 1-29 or 30-57.

116. An apparatus, characterized in that, Includes a processor for calling a program from memory to perform the method as described in any one of claims 1-29 or 30-57.

117. A chip, characterized in that, Includes a processor for calling a program from memory, causing a device on which the chip is mounted to perform the method as described in any one of claims 1-29 or 30-57.

118. A computer-readable storage medium, characterized in that, It contains a program that causes a computer to perform the method as described in any one of claims 1-29 or 30-57.

119. A computer program product, characterized in that, Includes a program that causes a computer to perform the method as described in any one of claims 1-29 or 30-57.

120. A computer program, characterized in that, The computer program causes the computer to perform the method as described in any one of claims 1-29 or 30-57.

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