Information transmission method and apparatus, and communication device and storage medium

Abstract

Provided in the embodiments of the present disclosure are an information transmission method and apparatus, and a communication device and a storage medium. The method comprises: an access network device sending wake-up information to a user equipment (UE), wherein the wake-up information is used for instructing a UE associated with backscatter transmission to switch from a radio resource control (RRC) non-connected state to an RRC connected state, and the RRC non-connected state comprises an RRC idle state and / or an RRC inactive state.

Description

Information transmission method, device, communication equipment and storage medium Technical Field

[0001] The present disclosure relates to the field of wireless communication technology but is not limited to the field of wireless communication technology, and in particular to an information transmission method, apparatus, communication equipment, and storage medium. Background Art

[0002] Traditional IoT devices in Internet of Things (IoT) networks are typically battery-powered. The proliferation of these devices has pushed maintenance costs, including labor and battery costs, to a new level. A vast number of batteries are discarded each year, with only a small fraction effectively recycled, negatively impacting the Earth's ecosystem. Maintaining IoT network operations and replacing batteries can be challenging in extreme environmental conditions.

[0003] Summary of the Invention

[0004] Embodiments of the present disclosure provide an information transmission method, apparatus, communication device, and storage medium.

[0005] According to a first aspect of an embodiment of the present disclosure, there is provided an information transmission method, which is executed by an access network device, comprising:

[0006] Sending wake-up information to a user equipment (UE), wherein the wake-up information is used to instruct the UE associated with backscatter transmission to switch from a radio resource control (RRC) non-connected state to an RRC connected state; the RRC non-connected state includes: an RRC idle state and / or an RRC inactive state.

[0007] In one embodiment, the wake-up information is further used to indicate at least one of the following:

[0008] The UE associated with the Internet of Things IoT service switches from the RRC non-connected state to the RRC connected state.

[0009] In one embodiment, the wake-up information includes at least one of the following:

[0010] A bitmap, the bitmap having N wake-up indication units, different wake-up indication units corresponding to different IoT services, the wake-up indication units instructing the UE to switch from the RRC non-connected state to the RRC connected state;

[0011] An IoT service identifier, used to indicate the IoT service associated with the UE;

[0012] The identifier of the UE.

[0013] In one embodiment, the method further comprises:

[0014] Receive indication information associated with IoT services sent by core network devices.

[0015] In one embodiment, the indication information includes at least one of the following:

[0016] A service request for the IoT service;

[0017] A first paging message associated with the IoT service.

[0018] In one embodiment, the indication information is used to indicate at least one of the following:

[0019] The IoT service identifier of the IoT service;

[0020] The identifier of the UE.

[0021] In one embodiment, the IoT service includes: an IoT task.

[0022] In one embodiment, the wake-up information is included in at least one of the following:

[0023] Paging downlink control information DCI;

[0024] Second paging message;

[0025] System message.

[0026] In one embodiment, the method further comprises:

[0027] Receive handover reason information sent by the UE when switching to the RRC connected state, wherein the handover reason information is used to indicate at least one of the following:

[0028] The UE switches to the RRC connected state according to the wake-up information;

[0029] The UE switches to the RRC connected state with the purpose of becoming a reader of the backscatter transmission.

[0030] In one embodiment, the UE includes at least one of the following:

[0031] said UE being authorized to be a reader of said backscatter transmission;

[0032] the UE desiring or intending to become the reader;

[0033] The UE is supported to become the reader.

[0034] According to a second aspect of the present disclosure, an information transmission method is provided, which is performed by a core network device and includes:

[0035] Indication information associated with an Internet of Things (IoT) service is sent to an access network device, where the indication information is used to trigger the access network device to send a wake-up message, wherein the wake-up information is used to instruct a user equipment (UE) associated with backscatter transmission to switch from a radio resource control (RRC) non-connected state to an RRC connected state; the RRC non-connected state includes: an RRC idle state and / or an RRC inactive state.

[0036] In one embodiment, the wake-up information is used to indicate:

[0037] The UE associated with the IoT service switches from the RRC non-connected state to the RRC connected state.

[0038] In one embodiment, the wake-up information includes at least one of the following:

[0039] A bitmap, the bitmap having N wake-up indication units, different wake-up indication units corresponding to different IoT services, the wake-up indication units instructing the UE to switch from the RRC non-connected state to the RRC connected state;

[0040] An IoT service identifier, used to indicate the IoT service associated with the UE;

[0041] The identifier of the UE.

[0042] In one embodiment, the indication information includes at least one of the following:

[0043] a first service request for the IoT service;

[0044] A first paging message associated with the IoT service.

[0045] In one embodiment, the indication information is used to indicate at least one of the following:

[0046] The IoT service identifier of the IoT service;

[0047] The identifier of the UE.

[0048] In one embodiment, the IoT service includes: an IoT task.

[0049] In one embodiment, the wake-up information is included in at least one of the following:

[0050] Paging downlink control information DCI;

[0051] Second paging message;

[0052] System message.

[0053] In one embodiment, the UE includes at least one of the following:

[0054] the UE being authorized to be the backscatter transmission reader;

[0055] said UE desiring or intending said reader;

[0056] The UE is supported to become the reader.

[0057] In one embodiment, the indication information associated with the Internet of Things (IoT) service sent to the access network device includes:

[0058] Receive the second service request associated with the IoT service sent by the IoT service network element, and send the indication information associated with the IoT service to the access network device.

[0059] According to a third aspect of the present disclosure, an information transmission method is provided, which is performed by a user equipment (UE), and includes:

[0060] Receive wake-up information sent by an access network device, wherein the wake-up information is used to instruct a UE associated with backscatter transmission to switch from a radio resource control RRC non-connected state to an RRC connected state, wherein the RRC non-connected state includes: an RRC idle state and / or an RRC inactive state.

[0061] In one embodiment, the wake-up information is used to indicate:

[0062] The UE associated with the Internet of Things IoT service switches from the RRC non-connected state to the RRC connected state.

[0063] In one embodiment, the wake-up information includes at least one of the following:

[0064] A bitmap, the bitmap having N wake-up indication units, different wake-up indication units corresponding to different IoT services, the wake-up indication units instructing the UE to switch from the RRC non-connected state to the RRC connected state;

[0065] An IoT service identifier, used to indicate the IoT service associated with the UE;

[0066] UE identifier.

[0067] In one embodiment, the IoT service includes: an IoT task.

[0068] In one embodiment, the method further comprises:

[0069] Based on the wake-up information, it is determined whether to switch from the RRC non-connected state to the RRC connected state.

[0070] In one embodiment, the determining, based on the wake-up information, to switch from the RRC non-connected state to the RRC connected state includes:

[0071] Determine that the UE is associated with backscatter transmission, and / or determine that the UE is associated with the IoT service indicated by the wake-up information, and / or determine that the UE identifier is the same as the UE identifier indicated by the wake-up information, and switch from the RRC non-connected state to the RRC connected state.

[0072] In one embodiment, the method further comprises:

[0073] determining to switch from the RRC non-connected state to the RRC connected state, and sending switching reason information to the access network device, wherein the switching reason information is used to indicate at least one of the following:

[0074] The UE switches to the RRC connected state according to the wake-up information;

[0075] The UE switches to the RRC connected state with the purpose of becoming a reader of the backscatter transmission.

[0076] In one embodiment, the wake-up information is included in at least one of the following:

[0077] Paging downlink control information DCI;

[0078] Second paging message;

[0079] System message.

[0080] In one embodiment, the UE is associated with the backscatter transmission, including at least one of the following:

[0081] The UE is authorized to be a reader of the backscatter transmission;

[0082] The UE expects or intends to become the reader;

[0083] The UE supports becoming the reader;

[0084] The reader is used for at least one of the following: sending an excitation signal of the backscatter transmission; receiving a backscatter signal of the backscatter transmission and determining data information carried by the backscatter signal; and transmitting data information carried by the backscatter signal.

[0085] According to a fourth aspect of the present disclosure, an access network device is provided, including:

[0086] The transceiver module is configured to send a wake-up message to a user equipment UE, wherein the wake-up message is used to instruct the UE associated with backscatter transmission to switch from a radio resource control RRC non-connected state to an RRC connected state; the RRC non-connected state includes: an RRC idle state and / or an RRC inactive state.

[0087] In one embodiment, the wake-up information is used to indicate:

[0088] The UE associated with the Internet of Things IoT service switches from the RRC non-connected state to the RRC connected state.

[0089] In one embodiment, the wake-up information includes at least one of the following:

[0090] A bitmap, the bitmap having N wake-up indication units, different wake-up indication units corresponding to different IoT services, the wake-up indication units instructing the UE to switch from the RRC non-connected state to the RRC connected state;

[0091] An IoT service identifier, used to indicate the IoT service associated with the UE;

[0092] The identifier of the UE.

[0093] In one embodiment, the transceiver module is specifically configured as follows:

[0094] Receive indication information associated with the IoT service sent by the core network device, and send the wake-up information.

[0095] In one embodiment, the indication information includes at least one of the following:

[0096] A service request for the IoT service;

[0097] A first paging message associated with the IoT service.

[0098] In one embodiment, the indication information is used to indicate at least one of the following:

[0099] The IoT service identifier of the IoT service;

[0100] The identifier of the UE.

[0101] In one embodiment, the IoT service includes: an IoT task.

[0102] In one embodiment, the wake-up information is included in at least one of the following:

[0103] Paging downlink control information DCI;

[0104] Second paging message;

[0105] System message.

[0106] In one embodiment, the transceiver module is further configured to:

[0107] Receive handover reason information sent by the UE when switching to the RRC connected state, wherein the handover reason information is used to indicate at least one of the following:

[0108] The UE switches to the RRC connected state according to the wake-up information;

[0109] The UE switches to the RRC connected state with the purpose of becoming a reader of the backscatter transmission.

[0110] In one embodiment, the UE includes at least one of the following:

[0111] the UE being authorized to be the backscatter transmission reader;

[0112] the UE desiring or intending to become the reader;

[0113] The UE is supported to become the reader.

[0114] According to a fifth aspect of the present disclosure, a core network device is provided, including:

[0115] A transceiver module is configured to send indication information associated with an Internet of Things (IoT) service to an access network device, where the indication information is used to trigger the access network device to send a wake-up message to a user equipment (UE), wherein the wake-up information is used to instruct the user equipment (UE) associated with backscatter transmission to switch from a radio resource control (RRC) non-connected state to an RRC connected state; the RRC non-connected state includes: an RRC idle state and / or an RRC inactive state.

[0116] In one embodiment, the wake-up information is used to indicate:

[0117] The UE associated with the IoT service switches from the RRC non-connected state to the RRC connected state.

[0118] In one embodiment, the wake-up information includes at least one of the following:

[0119] A bitmap, the bitmap having N wake-up indication units, different wake-up indication units corresponding to different IoT services, the wake-up indication units instructing the UE to switch from the RRC non-connected state to the RRC connected state;

[0120] An IoT service identifier, used to indicate the IoT service associated with the UE;

[0121] The identifier of the UE.

[0122] In one embodiment, the indication information includes at least one of the following:

[0123] a first service request for the IoT service;

[0124] A first paging message associated with the IoT service.

[0125] In one embodiment, the indication information is used to indicate at least one of the following:

[0126] The IoT service identifier of the IoT service;

[0127] The identifier of the UE.

[0128] In one embodiment, the IoT service includes: an IoT task.

[0129] In one embodiment, the wake-up information is included in at least one of the following:

[0130] Paging downlink control information DCI;

[0131] Second paging message;

[0132] System message.

[0133] In one embodiment, the UE includes at least one of the following:

[0134] the UE being authorized to be the backscatter transmission reader;

[0135] the UE desiring or intending to become the reader;

[0136] The UE is supported to become the reader.

[0137] In one embodiment, the transceiver module is specifically configured as follows:

[0138] Receive the second service request associated with the IoT service sent by the IoT service network element, and send the indication information associated with the IoT service to the access network device.

[0139] According to a sixth aspect of the present disclosure, a user equipment (UE) is provided, including:

[0140] The transceiver module is configured to: receive wake-up information sent by the access network device, wherein the wake-up information is used to instruct the UE associated with the backscatter transmission to switch from the radio resource control RRC non-connected state to the RRC connected state, wherein the RRC non-connected state includes: RRC idle state and / or RRC inactive state.

[0141] In one embodiment, the wake-up information is used to indicate:

[0142] The UE associated with the Internet of Things IoT service switches from the RRC non-connected state to the RRC connected state.

[0143] In one embodiment, the wake-up information includes at least one of the following:

[0144] A bitmap, the bitmap having N wake-up indication units, different wake-up indication units corresponding to different IoT services, the wake-up indication units instructing the UE to switch from the RRC non-connected state to the RRC connected state;

[0145] An IoT service identifier, used to indicate the IoT service associated with the UE;

[0146] UE identifier.

[0147] In one embodiment, the IoT service includes: an IoT task.

[0148] In one embodiment, the apparatus further comprises:

[0149] The processing module is configured to determine, based on the wake-up information, to switch from the RRC non-connected state to the RRC connected state.

[0150] In one embodiment, the processing module is specifically configured to include:

[0151] Determine that the UE is associated with backscatter transmission, and / or determine that the UE is associated with the IoT service indicated by the wake-up information, and / or determine that the UE identifier is the same as the UE identifier indicated by the wake-up information, and switch from the RRC non-connected state to the RRC connected state.

[0152] In one embodiment, the transceiver module is further configured to determine to switch from the RRC non-connected state to the RRC connected state, and send switching reason information to the access network device, wherein the switching reason information is used to indicate at least one of the following:

[0153] The UE switches to the RRC connected state according to the wake-up information;

[0154] The UE switches to the RRC connected state with the purpose of becoming a reader of the backscatter transmission.

[0155] In one embodiment, the wake-up information is included in at least one of the following:

[0156] Paging downlink control information DCI;

[0157] Second paging message;

[0158] System message.

[0159] In one embodiment, the UE is associated with the backscatter transmission, including at least one of the following:

[0160] The UE is authorized to be a reader of the backscatter transmission;

[0161] The UE expects or intends to become the reader;

[0162] The UE supports becoming the reader;

[0163] The reader is used for at least one of the following: sending an excitation signal of the backscatter transmission; receiving a backscatter signal of the backscatter transmission and determining data information carried by the backscatter signal; and transmitting data information carried by the backscatter signal.

[0164] According to a seventh aspect of the present disclosure, a communication system is provided, including an access network device and a UE, wherein:

[0165] The access network device executes the information transmission method provided in the first aspect;

[0166] The core network device executes the information transmission method provided in the second aspect;

[0167] The user equipment UE executes the information transmission method provided in the third aspect.

[0168] In an eighth aspect of the embodiments of the present disclosure, a communication device is provided, comprising a processor, a transceiver, a memory, and an executable program stored in the memory and capable of being run by the processor, wherein when the processor runs the executable program, the information transmission method provided in the first aspect, the second aspect, or the third aspect is executed.

[0169] In a ninth aspect of the embodiments of the present disclosure, a computer storage medium is provided, wherein the computer storage medium stores an executable program; after the executable program is executed by a processor, the information transmission method provided in the first aspect, the second aspect, or the third aspect can be implemented.

[0170] The information transmission method, apparatus, communication device, and storage medium provided by the embodiments of the present disclosure. The access network device sends a wake-up message to the UE, wherein the wake-up message is used to instruct the UE associated with the backscatter transmission to switch from the RRC non-connected state to the RRC connected state; the RRC non-connected state includes: the RRC idle state and / or the RRC inactive state. In this way, by sending the wake-up message to the UE through the access network device, the UE associated with the backscatter transmission is awakened, and the UE can perform backscatter transmission operations such as sending an excitation signal and / or receiving backscatter, thereby realizing the rapid and low-cost deployment of a passive Internet of Things based on the UE.

[0171] The technical solutions provided by the embodiments of the present disclosure should be understood that the above general description and the following detailed description are merely exemplary and explanatory and cannot limit the embodiments of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0172] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present invention and, together with the description, serve to explain the principles of the embodiments of the present invention.

[0173] FIG1 is a schematic structural diagram of a wireless communication system according to an exemplary embodiment;

[0174] FIG2 is a schematic diagram of backscattering according to an exemplary embodiment;

[0175] FIG3a is a schematic diagram of a network topology architecture according to an exemplary embodiment;

[0176] FIG3 b is a schematic diagram of a network topology architecture according to an exemplary embodiment;

[0177] FIG3c is a schematic diagram of a network topology architecture according to an exemplary embodiment;

[0178] FIG3 d is a schematic diagram of a network topology architecture according to an exemplary embodiment;

[0179] FIG4 is a schematic diagram showing an environmental Internet of Things type according to an exemplary embodiment;

[0180] FIG5 is a schematic diagram showing a flow chart of information transmission according to an exemplary embodiment;

[0181] FIG6 is a schematic diagram showing a flow chart of information transmission according to an exemplary embodiment;

[0182] FIG7 is a schematic diagram showing a frequency domain sub-channel set according to an exemplary embodiment;

[0183] FIG8 is a schematic diagram showing a flow chart of information transmission according to an exemplary embodiment;

[0184] FIG9 is a schematic diagram showing a flow chart of information transmission according to an exemplary embodiment;

[0185] FIG10 is a schematic diagram showing a flow chart of information transmission according to an exemplary embodiment;

[0186] FIG11 is a schematic diagram showing a flow of information transmission according to an exemplary embodiment;

[0187] FIG12 is a schematic diagram showing a flow of information transmission according to an exemplary embodiment;

[0188] FIG13 is a schematic structural diagram of an information transmission device according to an exemplary embodiment;

[0189] FIG14 is a schematic structural diagram of an information transmission device according to an exemplary embodiment;

[0190] FIG15 is a schematic structural diagram of an information transmission device according to an exemplary embodiment;

[0191] FIG16 is a schematic structural diagram of a UE according to an exemplary embodiment;

[0192] Fig. 17 is a schematic structural diagram of a communication device according to an exemplary embodiment. DETAILED DESCRIPTION

[0193] Exemplary embodiments are described in detail herein, with examples illustrated in the accompanying drawings. In the following description, when referring to the drawings, identical numerals in different figures represent identical or similar elements, unless otherwise indicated. The embodiments described in the following exemplary embodiments are not intended to represent all possible implementations consistent with the present invention. Rather, they are merely examples of apparatuses and methods consistent with certain aspects of the present invention.

[0194] The terms used in the embodiments of the present disclosure are for the purpose of describing specific embodiments only and are not intended to limit the embodiments of the present disclosure. The singular forms "a," "the," and "the" used in the present disclosure are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more associated listed items.

[0195] It should be understood that although the terms first, second, third, etc. may be used to describe various information in the embodiments of the present disclosure, such information should not be limited to these terms. These terms are only used to distinguish information of the same type from each other. For example, without departing from the scope of the embodiments of the present disclosure, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Depending on the context, the word "if" as used herein may be interpreted as "at the time of" or "when" or "in response to determining".

[0196] Please refer to Figure 1, which shows a schematic diagram of the structure of a wireless communication system provided by an embodiment of the present disclosure. As shown in Figure 1, the wireless communication system is a communication system based on cellular mobile communication technology, and the wireless communication system may include: a plurality of UEs 11 and a plurality of network devices 12.

[0197] The wireless communication system may be a fourth generation mobile communication technology (4G) system, also known as a long term evolution (LTE) system; or, the wireless communication system may be a 5G system, also known as a new radio (NR) system or a 5G NR system. Alternatively, the wireless communication system may be a next generation system of the 5G system. The access network in the 5G system may be referred to as an NG-RAN (New Generation-Radio Access Network). Alternatively, an MTC system.

[0198] UE 11 may refer to a device that provides voice and / or data connectivity to a user. UE 11 may communicate with one or more core networks via a Radio Access Network (RAN). UE 11 may be an IoT UE, such as a sensor device, a mobile phone (or "cellular" phone), and a computer with an IoT UE. For example, it may be a fixed, portable, pocket-sized, handheld, computer-built-in, or vehicle-mounted device. For example, a station (STA), a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, an access point, a remote terminal, an access terminal, a user terminal, a user agent, a user device, or a user equipment (UE). Alternatively, UE 11 may be a device of an unmanned aerial vehicle. Alternatively, UE 11 may be a vehicle-mounted device, such as a driving computer with wireless communication capabilities, or a wireless communication device connected to an external driving computer. Alternatively, the UE 11 may also be a roadside device, for example, a street lamp, a traffic light, or other roadside device with a wireless communication function.

[0199] The network device 12 may include an access network device. Optionally, the network device 12 may also include a core network device. Among them, the access network device may be an evolved access device (eNB) adopted in a 4G system. Alternatively, it may be an access device (gNB) adopting a centralized distributed architecture in a 5G system. When the access network device adopts a centralized distributed architecture, it generally includes a centralized unit (CU) and at least two distributed units (DU). The centralized unit is provided with a protocol stack of a packet data convergence protocol (PDCP) layer, a radio link layer control protocol (RLC) layer, and a media access control (MAC) layer; the distributed unit is provided with a physical (PHY) layer protocol stack. The embodiment of the present disclosure does not limit the specific implementation method of the access network device.

[0200] A wireless connection can be established between the network device 12 and the UE 11 via a wireless air interface. In different implementations, the wireless air interface is a wireless air interface based on the fourth generation mobile communication network technology (4G) standard; or, the wireless air interface is a wireless air interface based on the fifth generation mobile communication network technology (5G) standard, for example, the wireless air interface is a new air interface; or, the wireless air interface can also be a wireless air interface based on the next generation mobile communication network technology standard of 5G.

[0201] Ambient-powered IoT is a technology that can address these unmet needs. An ambient-powered IoT device can be an IoT device powered by energy harvesting, either without a battery or with limited energy storage capabilities (e.g., using capacitors), by harvesting radio waves, light, motion, heat, or any other suitable power source.

[0202] Energy obtained from the environment can drive data transmission and wireless communication of sensing nodes. The current mainstream low-power IoT communication chips (such as BLE, LoRa, and NB-IoT) have a transmit and receive power consumption of tens or even hundreds of milliwatts, while the energy obtained by environmental energy harvesting is only at the microwatt level, which is unable to drive these types of nodes. Therefore, a new wireless communication technology is needed to reduce communication energy consumption to tens of microwatts or even below ten microwatts.

[0203] The methods that can be used include backscatter communications technology.

[0204] As shown in Figure 2, inverse backscatter transmission utilizes the principle of RF signal backscattering to design extremely low-power modulation and transmission technology. A reader sends an excitation signal to an ambient IoT device. When the excitation signal reaches the ambient IoT device, a portion of it is reflected. The ambient IoT device adjusts the matching between the receiving antenna and impedance according to the intended information, enhancing the reflection of the incident excitation signal. It then modulates its acquired sensory data onto the reflected signal to complete data transmission. This process is similar to a reflector. Compared to other communication technologies, inverse backscatter transmission does not require complex RF structures, reducing the use of components such as power amplifiers, high-precision crystal oscillators, duplexers, and high-precision filters. It also does not require complex baseband processing, thus simplifying UE design and significantly reducing UE node costs.

[0205] Here, the reader may be a network node of a wireless communication network, such as a base station.

[0206] The network topology for reverse backscatter transmission can include one of the following:

[0207] Topology 1: As shown in Figure 3a, uplink (UL) and downlink (DL) data transmission is carried out directly between the ambient IoT device and the base station.

[0208] Topology 2: As shown in Figure 3b, DL and UL data transmission occurs indirectly between ambient IoT devices and the base station. Intermediate nodes (also called auxiliary nodes) provide forwarding services. These intermediate nodes can include relays, integrated access backhaul (IAB), user equipment (UE), and repeaters (RP).

[0209] Topology 3: As shown in Figure 3c, ambient IoT devices and base stations directly transmit or receive data in the DL or UL. Auxiliary nodes are located on the UL or DL, responsible for receiving or sending UL or DL ​​data. Examples of auxiliary nodes include relays, IABs, UEs, and repeaters.

[0210] Topology 4: As shown in Figure 3d, ambient IoT devices and UEs directly receive and transmit data on the downlink and uplink. The UE collects data and forwards it to the network.

[0211] As shown in Figure 4, Ambient IoT devices can be divided into three types:

[0212] Device A: has no energy storage, cannot generate or amplify signals independently, and can only perform backscatter transmission.

[0213] Device B: Has energy storage, cannot generate signals independently, and can only perform backscatter transmission. The use of stored energy can include amplification of the backscattered signal.

[0214] Device C: has energy storage and can independently generate signals, that is, it has active radio frequency (RF) components for transmission.

[0215] Data collection from Ambient IoT devices using base stations as anchor points requires the deployment of base stations. However, in passive IoT, base station deployment is expensive and unsuitable for rapid deployment.

[0216] To rapidly and cost-effectively deploy passive IoT, a passive IoT data collection method based on UEs acting as anchor points for ambient IoT devices is proposed. UEs typically enter the RRC disconnected state when no data communication is required. However, waking up the UE when backscatter communication is required for IoT services presents a pressing challenge.

[0217] As shown in FIG5 , an embodiment of the present disclosure provides an information transmission method, which is executed by an access network device and includes:

[0218] Step 501: Send wake-up information to the UE, wherein the wake-up information is used to instruct the UE associated with backscatter transmission to switch from an RRC non-connected state to an RRC connected state, wherein the RRC non-connected state includes: an RRC idle state and / or an RRC inactive state.

[0219] In a possible implementation, the access network device may include, for example, a base station.

[0220] In a possible implementation, the access network device may send wake-up information to the UE.

[0221] In one embodiment, the UE includes at least one of the following:

[0222] the UE being authorized to be the backscatter transmission reader;

[0223] the UE desiring or intending to become the reader;

[0224] The UE is supported to become the reader.

[0225] The reader is used for at least one of the following: sending an excitation signal of the backscatter transmission; receiving a backscatter signal of the backscatter transmission and determining data information carried by the backscatter signal; and transmitting data information carried by the backscatter signal.

[0226] In one possible implementation, a UE associated with the backscatter transmission is used to receive a backscatter signal sent by an ambient IoT device (hereinafter referred to as IoT device) based on an excitation signal.

[0227] In one possible implementation, the UE associated with the backscatter transmission is used to send an excitation signal to the IoT device and receive a backscatter signal sent by a core network device based on the excitation signal.

[0228] In one possible implementation, the UE associated with the backscatter transmission is configured to parse data information from a received backscatter signal and send the data information to an access network device or a core network device.

[0229] In one possible implementation, the IoT device is configured to send a backscattered signal based on an excitation signal.

[0230] In a possible implementation, the frequency band of the excitation signal sent by the IoT device belongs to the frequency band of cellular mobile communications.

[0231] In one possible implementation, the excitation signal may provide energy for backscattering to the IoT device.

[0232] In one possible implementation, the excitation signal can provide energy for backscattering to multiple IoT devices.

[0233] In one possible implementation, the IoT device includes at least one of the following: a tag device and a sensor device.

[0234] In one embodiment, the wake-up information is included in at least one of the following:

[0235] Paging downlink control information DCI;

[0236] Second paging message;

[0237] System messages, such as System Information Block (SIB).

[0238] In a possible implementation, the wake-up information may occupy M bits, and be used to wake up the UE associated with the backscatter transmission, where M is a positive integer greater than or equal to 1.

[0239] In this way, the access network device sends a wake-up message to the UE to wake up the UE associated with the backscatter transmission. The UE can perform backscatter transmission work such as sending an excitation signal and / or receiving backscatter, thereby realizing a fast and low-cost deployment of a passive Internet of Things based on the UE.

[0240] In one embodiment, the wake-up information is used to indicate:

[0241] The UE associated with the Internet of Things IoT service switches from the RRC non-connected state to the RRC connected state.

[0242] In one possible implementation, the wake-up information may occupy M bits, and be used to wake up all UEs associated with the backscatter transmission, where M is a positive integer greater than or equal to 1.

[0243] After receiving the wake-up information, the UE in the RRC non-connected state may switch from the RRC non-connected state to the RRC connected state if it is determined that the UE is associated with the backscatter transmission.

[0244] An exemplary base station may carry wake-up information, such as a bit, in a paging DCI, a paging message, or an SIB. The wake-up information is used to wake up all UEs that support the reader function and / or authorize the UE that can become a reader to enter an RRC connected state, i.e., configure the UE as a reader.

[0245] After receiving the indication information, the UE supporting the reader function and / or the UE authorized to become a reader enters the RRC connected state.

[0246] In one possible implementation, the wake-up message is used to wake up a UE associated with a specific IoT service. The wake-up message may carry indication information associated with the IoT service.

[0247] After receiving the wake-up information and determining that the UE is associated with the IoT service, the UE may switch from the RRC non-connected state to the RRC connected state.

[0248] In a possible implementation, the UE associated with the IoT service may include, but is not limited to: a UE supporting the IoT service and a UE subscribed as a reader of the IoT service.

[0249] In one embodiment, the IoT service includes: an IoT task.

[0250] In a possible implementation, the IoT service may be delivered from the core network device to the access network device in the form of an IoT task.

[0251] The core network device may send an IoT task identifier of the IoT task to the access network device, and the access network device may wake up the UE based on the IoT task identifier of the IoT task.

[0252] In this embodiment, the IoT service identifier of the IoT service may be the IoT task identifier of the IoT task.

[0253] In this way, the access network device sends a wake-up message to the UE to wake up the UE associated with the backscatter transmission. The UE can perform backscatter transmission work such as sending an excitation signal and / or receiving backscatter, thereby realizing a fast and low-cost deployment of a passive Internet of Things based on the UE.

[0254] In one embodiment, the wake-up information includes at least one of the following:

[0255] A bitmap, the bitmap having N wake-up indication units, different wake-up indication units corresponding to different IoT services, the wake-up indication units instructing the UE to switch from the RRC non-connected state to the RRC connected state;

[0256] An IoT service identifier, used to indicate the IoT service associated with the UE;

[0257] The identifier of the UE.

[0258] N is a positive integer greater than or equal to 1.

[0259] In one possible implementation, a wake-up indication unit may occupy one or more bits. Each wake-up indication unit corresponds to an IoT service. Different wake-up indication units correspond to different IoT services.

[0260] The setting of the wake-up indication unit in the bitmap may be specified by the communication protocol or agreed upon by the access network device and the UE.

[0261] In a possible implementation, the arrangement order of the wake-up indication units corresponds to the arrangement order of the IoT services in the IoT service list.

[0262] In a possible implementation, the IoT service list may be sent to the UE by an access network device or a core network device.

[0263] In one possible approach, different encoding values ​​of the wake-up indication unit can indicate whether the IoT service associated with the wake-up indication unit requires the UE to wake up. For example, the wake-up indication unit can occupy one bit, with "1" indicating that the UE associated with the IoT service needs to wake up, and "0" indicating that the UE associated with the IoT service does not need to wake up.

[0264] After receiving the bitmap, the UE determines the code value of the wake-up indication element corresponding to the IoT service associated with it in the bitmap. If the code value indicates that wake-up is required, the UE can switch from the RRC non-connected state to the RRC connected state. Otherwise, the UE can remain in the RRC non-connected state.

[0265] For example, the base station can broadcast a list of supported IoT service IDs. The wake-up information sent by the base station is a bitmap for this list of IoT service IDs, with each bit corresponding to an IoT service. For example, the bitmap corresponds one-to-one with the index of each IoT service ID in the list, from low to high bits. A bit set to 1 indicates that the IoT service corresponding to the IoT service ID in the bitmap needs to wake up the UE to become a reader.

[0266] In one possible implementation, the wake-up information may directly indicate the IoT service corresponding to the UE that needs to be awakened. The wake-up information may indicate the IoT service by indicating an IoT service identifier.

[0267] Here, the IoT service identifier can uniquely indicate an IoT service.

[0268] After receiving the wake-up information, the UE can determine whether the IoT service associated with itself is consistent with the IoT service identifier indicated by the wake-up information. If they are consistent, the UE can switch from the RRC non-connected state to the RRC connected state. Otherwise, the UE can remain in the RRC non-connected state.

[0269] In a possible implementation, the access network device may determine the UE corresponding to the IoT service, and therefore, the access network device may directly indicate the identifier of the UE in the wake-up information.

[0270] In one possible implementation, the access network device may determine the UE corresponding to the IoT service based on the subscription information of the UE.

[0271] In one possible implementation, the core network device may determine the UE corresponding to the IoT service based on the subscription information of the UE, and indicate the identifier of the UE that needs to be awakened to the access network device.

[0272] After receiving the wake-up information, the UE can determine whether its own identity is consistent with the identity indicated by the wake-up information. If they are consistent, the UE can switch from the RRC non-connected state to the RRC connected state. Otherwise, the UE can maintain the RRC non-connected state.

[0273] As shown in FIG6 , an embodiment of the present disclosure provides an information transmission method, which is executed by an access network device and includes:

[0274] Step 601: Receive indication information associated with IoT services sent by a core network device.

[0275] In a possible implementation, the access network device receives indication information associated with the IoT service sent by the core network device, and sends the wake-up information.

[0276] In one possible implementation, the IoT service may be initiated by an IoT service network element, which may include an external server or the like.

[0277] The IoT service network element may send a second service request to the core network device to trigger the IoT service. The second service request is used to indicate at least one of the following: an IoT service identifier of the IoT service, an IoT task identifier of the IoT task, an IoT service association identifier, etc.

[0278] The core network device triggers the IoT service by sending indication information associated with the IoT service to the access network device, instructing the access network device to provide the IoT service.

[0279] After receiving the indication information associated with the IoT service, the access network device may send a wake-up message to wake up the UE associated with the IoT service, or wake up all UEs associated with backscatter transmission.

[0280] In one embodiment, the indication information is used to indicate at least one of the following:

[0281] The IoT service identifier of the IoT service;

[0282] The identifier of the UE.

[0283] The core network device can indicate the IoT service identifier through indication information associated with the IoT service, triggering the access network device to provide the IoT service corresponding to the IoT service identifier. The access network device can send a wake-up message based on the IoT service identifier to wake up at least the UE of the IoT service corresponding to the IoT service identifier.

[0284] The core network device can also determine the UE corresponding to the IoT service and indicate the UE's identity to the access network device through indication information associated with the IoT service. If the UE is in an RRC non-connected state, the access network device can send a wake-up message to wake up the UE.

[0285] In one embodiment, the indication information includes at least one of the following:

[0286] A service request for the IoT service;

[0287] A first paging message associated with the IoT service.

[0288] In one possible manner, the indication information associated with the IoT service may be a service request for the IoT service. The core network device sends the service request to the access network device, where the service request indicates the IoT service identifier of the IoT service and / or the identifier of the UE.

[0289] In one possible manner, the indication information associated with the IoT service may be a first paging message sent by the core network device to the access network device. The first paging message may trigger the access network device to send a wake-up message.

[0290] As shown in FIG7 , an embodiment of the present disclosure provides an information transmission method, which is performed by an access network device and includes:

[0291] Step 701: Receive handover reason information sent by the UE when switching to the RRC connected state, where the handover reason information is used to indicate at least one of the following:

[0292] The UE switches to the RRC connected state according to the wake-up information;

[0293] The UE switches to the RRC connected state with the purpose of becoming a reader of the backscatter transmission.

[0294] After receiving the wake-up information, the UE can determine whether to switch from the RRC non-connected state to the RRC connected state based on its own capabilities, and / or contract information, and / or authorization information, and / or whether the UE is associated with the corresponding IoT service.

[0295] For a UE that supports the reader function and / or is authorized to become a reader, after receiving the wake-up information, it is determined whether the IoT service identifier associated with or subscribed to the UE requires waking up the UE as a reader. If so, the UE enters the RRC connected state.

[0296] When the UE switches from the RRC non-connected state to the RRC connected state, it can send switching reason information to the access network device.

[0297] In one possible implementation, the handover reason information may be carried in at least one of the following:

[0298] RRC association establishment messages, such as RRC establishment request message, RRC establishment completion message, etc.

[0299] RRC recovery-related messages, such as RRC recovery request message, RRC recovery complete message, etc.

[0300] Exemplarily, the handover cause information (cause value) may be: MT-access (indicating access based on base station wake-up to enter the RRC connected state), or ToBeReader (indicating RRC access for the purpose of becoming a reader).

[0301] If the UE enters the RRC connected state from the RRC unconnected state based on the wakeup information, the wakeup cause value in the RRC association establishment message or the RRC association restoration message can be at least one of the following:

[0302] MT-access: indicates access based on base station wake-up to enter the RRC connection state;

[0303] To Be Reader: Indicates RRC access for the purpose of becoming a reader.

[0304] As shown in FIG8 , an embodiment of the present disclosure provides an information transmission method, which is executed by a UE and includes:

[0305] Step 801: Receive wake-up information sent by an access network device, wherein the wake-up information is used to instruct a UE associated with backscatter transmission to switch from an RRC non-connected state to an RRC connected state, wherein the RRC non-connected state includes: an RRC idle state and / or an RRC inactive state.

[0306] In a possible implementation, the access network device may include, for example, a base station.

[0307] In a possible implementation, the access network device may send wake-up information to the UE.

[0308] In one embodiment, the UE is associated with the backscatter transmission, including at least one of the following:

[0309] The UE is authorized to be a reader of the backscatter transmission;

[0310] The UE expects or intends to become the reader;

[0311] The UE supports becoming the reader;

[0312] The reader is used for at least one of the following: sending an excitation signal of the backscatter transmission; receiving a backscatter signal of the backscatter transmission and determining data information carried by the backscatter signal; and transmitting data information carried by the backscatter signal.

[0313] In one possible implementation, a UE associated with the backscatter transmission is used to receive a backscatter signal sent by an ambient IoT device (hereinafter referred to as IoT device) based on an excitation signal.

[0314] In one possible implementation, the UE associated with the backscatter transmission is used to send an excitation signal to the IoT device and receive a backscatter signal sent by a core network device based on the excitation signal.

[0315] In one possible implementation, the UE associated with the backscatter transmission is configured to parse data information from a received backscatter signal and send the data information to an access network device or a core network device.

[0316] In one possible implementation, the IoT device is configured to send a backscattered signal based on an excitation signal.

[0317] In a possible implementation, the frequency band of the excitation signal sent by the IoT device belongs to the frequency band of cellular mobile communications.

[0318] In one possible implementation, the excitation signal may provide energy for backscattering to the IoT device.

[0319] In one possible implementation, the excitation signal can provide energy for backscattering to multiple IoT devices.

[0320] In one possible implementation, the IoT device includes at least one of the following: a tag device and a sensor device.

[0321] In one embodiment, the wake-up information is included in at least one of the following:

[0322] Paging downlink control information DCI;

[0323] Second paging message;

[0324] System messages, such as System Information Block (SIB).

[0325] In a possible implementation, the wake-up information may occupy M bits, and be used to wake up the UE associated with the backscatter transmission, where M is a positive integer greater than or equal to 1.

[0326] In this way, the access network device sends a wake-up message to the UE to wake up the UE associated with the backscatter transmission. The UE can perform backscatter transmission work such as sending an excitation signal and / or receiving backscatter, thereby realizing a fast and low-cost deployment of a passive Internet of Things based on the UE.

[0327] In one embodiment, the wake-up information is used to indicate:

[0328] The UE associated with the Internet of Things IoT service switches from the RRC non-connected state to the RRC connected state.

[0329] In one possible implementation, the wake-up information may occupy M bits, and be used to wake up all UEs associated with the backscatter transmission, where M is a positive integer greater than or equal to 1.

[0330] After receiving the wake-up information, the UE in the RRC non-connected state may switch from the RRC non-connected state to the RRC connected state if it is determined that the UE is associated with the backscatter transmission.

[0331] An exemplary base station may carry wake-up information, such as a bit, in a paging DCI, a paging message, or an SIB. The wake-up information is used to wake up all UEs that support the reader function and / or authorize the UE that can become a reader to enter an RRC connected state, i.e., configure the UE as a reader.

[0332] After receiving the indication information, the UE supporting the reader function and / or the UE authorized to become a reader enters the RRC connected state.

[0333] In one possible implementation, the wake-up message is used to wake up a UE associated with a specific IoT service. The wake-up message may carry indication information associated with the IoT service.

[0334] After receiving the wake-up information and determining that the UE is associated with the IoT service, the UE may switch from the RRC non-connected state to the RRC connected state.

[0335] In a possible implementation, the UE associated with the IoT service may include, but is not limited to: a UE supporting the IoT service and a UE subscribed as a reader of the IoT service.

[0336] In one embodiment, the IoT service includes: an IoT task.

[0337] In a possible implementation, the IoT service may be delivered from the core network device to the access network device in the form of an IoT task.

[0338] The core network device may send an IoT task identifier of the IoT task to the access network device, and the access network device may wake up the UE based on the IoT task identifier of the IoT task.

[0339] In this embodiment, the IoT service identifier of the IoT service may be the IoT task identifier of the IoT task.

[0340] In this way, the access network device sends a wake-up message to the UE to wake up the UE associated with the backscatter transmission. The UE can perform backscatter transmission work such as sending an excitation signal and / or receiving backscatter, thereby realizing a fast and low-cost deployment of a passive Internet of Things based on the UE.

[0341] In one embodiment, the wake-up information includes at least one of the following:

[0342] A bitmap, the bitmap having N wake-up indication units, different wake-up indication units corresponding to different IoT services, the wake-up indication units instructing the UE to switch from the RRC non-connected state to the RRC connected state;

[0343] IoT service identifier, wherein the IoT service identifier is used to indicate the IoT service associated with the UE that switches from the RRC non-connected state to the RRC connected state;

[0344] The identifier of the UE.

[0345] N is a positive integer greater than or equal to 1.

[0346] In one possible implementation, a wake-up indication unit may occupy one or more bits. Each wake-up indication unit corresponds to an IoT service. Different wake-up indication units correspond to different IoT services.

[0347] The setting of the wake-up indication unit in the bitmap may be specified by the communication protocol or agreed upon by the access network device and the UE.

[0348] In a possible implementation, the arrangement order of the wake-up indication units corresponds to the arrangement order of the IoT services in the IoT service list.

[0349] In a possible implementation, the IoT service list may be sent to the UE by an access network device or a core network device.

[0350] In one possible approach, different encoding values ​​of the wake-up indication unit can indicate whether the IoT service associated with the wake-up indication unit requires the UE to wake up. For example, the wake-up indication unit can occupy one bit, with "1" indicating that the UE associated with the IoT service needs to wake up, and "0" indicating that the UE associated with the IoT service does not need to wake up.

[0351] After receiving the bitmap, the UE determines the code value of the wake-up indication element corresponding to the IoT service associated with it in the bitmap. If the code value indicates that wake-up is required, the UE can switch from the RRC non-connected state to the RRC connected state. Otherwise, the UE can remain in the RRC non-connected state.

[0352] For example, the base station can broadcast a list of supported IoT service IDs. The wake-up information sent by the base station is a bitmap for the IoT service ID list, with each bit corresponding to an IoT service. For example, the bitmap corresponds one-to-one with the index of each IoT service ID in the IoT service ID list, from low to high bits. A bit set to 1 indicates that the IoT service corresponding to the IoT service ID in the bit needs to wake up the UE to become a reader.

[0353] In one possible implementation, the wake-up information may directly indicate the IoT service corresponding to the UE that needs to be awakened. The wake-up information may indicate the IoT service by indicating an IoT service identifier.

[0354] Here, the IoT service identifier can uniquely indicate an IoT service.

[0355] After receiving the wake-up information, the UE can determine whether the IoT service associated with itself is consistent with the IoT service identifier indicated by the wake-up information. If they are consistent, the UE can switch from the RRC non-connected state to the RRC connected state. Otherwise, the UE can remain in the RRC non-connected state.

[0356] In a possible implementation, the access network device may determine the UE corresponding to the IoT service, and therefore, the access network device may directly indicate the identifier of the UE in the wake-up information.

[0357] In one possible implementation, the access network device may determine the UE corresponding to the IoT service based on the subscription information of the UE.

[0358] In one possible implementation, the core network device may determine the UE corresponding to the IoT service based on the subscription information of the UE, and indicate the identifier of the UE that needs to be awakened to the access network device.

[0359] After receiving the wake-up information, the UE can determine whether its own identity is consistent with the identity indicated by the wake-up information. If they are consistent, the UE can switch from the RRC non-connected state to the RRC connected state. Otherwise, the UE can maintain the RRC non-connected state.

[0360] In some embodiments, the access network device receives indication information associated with the IoT service sent by the core network device.

[0361] In one possible implementation, the IoT service may be initiated by an IoT service network element, which may include an external server or the like.

[0362] The IoT service network element may send a second service request to the core network device to trigger the IoT service. The second service request is used to indicate at least one of the following: an IoT service identifier of the IoT service, an IoT task identifier of the IoT task, an IoT service association identifier, etc.

[0363] The core network device triggers the IoT service by sending indication information associated with the IoT service to the access network device, instructing the access network device to provide the IoT service.

[0364] After receiving the indication information associated with the IoT service, the access network device may send a wake-up message to wake up the UE associated with the IoT service, or wake up all UEs associated with backscatter transmission.

[0365] In one embodiment, the indication information is used to indicate at least one of the following:

[0366] The IoT service identifier of the IoT service;

[0367] The identifier of the UE.

[0368] The core network device can indicate the IoT service identifier through indication information associated with the IoT service, triggering the access network device to provide the IoT service corresponding to the IoT service identifier. The access network device can send a wake-up message based on the IoT service identifier to wake up at least the UE of the IoT service corresponding to the IoT service identifier.

[0369] The core network device can also determine the UE corresponding to the IoT service and indicate the UE's identity to the access network device through indication information associated with the IoT service. If the UE is in an RRC non-connected state, the access network device can send a wake-up message to wake up the UE.

[0370] In one embodiment, the indication information includes at least one of the following:

[0371] A service request for the IoT service;

[0372] A first paging message associated with the IoT service.

[0373] In one possible manner, the indication information associated with the IoT service may be a service request for the IoT service. The core network device sends the service request to the access network device, where the service request indicates the IoT service identifier of the IoT service and / or the identifier of the UE.

[0374] In one possible manner, the indication information associated with the IoT service may be a first paging message sent by the core network device to the access network device. The first paging message may trigger the access network device to send a wake-up message.

[0375] As shown in FIG9 , an embodiment of the present disclosure provides an information transmission method, which is executed by a UE and includes:

[0376] Step 901: Based on the wake-up information, determine to switch from the RRC non-connected state to the RRC connected state.

[0377] In one embodiment, the determining, based on the wake-up information, to switch from the RRC non-connected state to the RRC connected state includes:

[0378] Determine that the UE is associated with backscatter transmission, and / or determine that the UE is associated with the IoT service indicated by the wake-up information, and / or determine that the UE identifier is the same as the UE identifier indicated by the wake-up information, and switch from the RRC non-connected state to the RRC connected state.

[0379] After receiving the wake-up information, the UE can determine whether to switch from the RRC non-connected state to the RRC connected state based on its own capabilities, and / or contract information, and / or authorization information, and / or whether the UE is associated with the corresponding IoT service, and / or whether the UE identifier is the same as the UE identifier indicated by the wake-up information.

[0380] Exemplarily, after receiving the wake-up information, a UE that supports the reader function and / or is authorized to become a reader determines whether the IoT service identifier associated with or subscribed to by the UE requires waking up the UE as a reader. If so, the UE enters the RRC connected state.

[0381] As shown in FIG10 , an embodiment of the present disclosure provides an information transmission method, which is executed by a UE and includes:

[0382] Step 1001: Determine to switch from the RRC non-connected state to the RRC connected state, and send switching reason information to the access network device, where the switching reason information is used to indicate at least one of the following:

[0383] The UE switches to the RRC connected state according to the wake-up information;

[0384] The UE switches to the RRC connected state with the purpose of becoming a reader of the backscatter transmission.

[0385] When the UE switches from the RRC non-connected state to the RRC connected state, it can send switching reason information to the access network device.

[0386] In one possible implementation, the handover reason information may be carried in at least one of the following:

[0387] RRC association establishment messages, such as RRC establishment request message, RRC establishment completion message, etc.

[0388] RRC recovery-related messages, such as RRC recovery request message, RRC recovery complete message, etc.

[0389] Exemplarily, the handover cause information (cause value) may be: MT-access (indicating access based on base station wake-up to enter the RRC connected state), or ToBeReader (indicating RRC access for the purpose of becoming a reader).

[0390] If the UE enters the RRC connected state from the RRC unconnected state based on the wakeup information, the wakeup cause value in the RRC association establishment message or the RRC association restoration message can be at least one of the following:

[0391] MT-access: indicates access based on base station wake-up to enter the RRC connection state;

[0392] To Be Reader: Indicates RRC access for the purpose of becoming a reader.

[0393] As shown in FIG11 , an embodiment of the present disclosure provides an information transmission method, which is executed by a core network device and includes:

[0394] Step 1101: Indication information associated with the IoT service is sent to the access network device, where the indication information is used to trigger the access network device to send wake-up information to the UE, wherein the wake-up information is used to instruct the UE associated with backscatter transmission to switch from the RRC non-connected state to the RRC connected state; the RRC non-connected state includes: RRC idle state and / or RRC inactive state.

[0395] In a possible implementation, the access network device may include, for example, a base station.

[0396] In a possible implementation, the access network device may send wake-up information to the UE.

[0397] In one embodiment, the UE includes at least one of the following:

[0398] the UE being authorized to be the backscatter transmission reader;

[0399] the UE desiring or intending to become the reader;

[0400] The UE is supported to become the reader.

[0401] The reader is used for at least one of the following: sending an excitation signal of the backscatter transmission; receiving a backscatter signal of the backscatter transmission and determining data information carried by the backscatter signal; and transmitting data information carried by the backscatter signal.

[0402] In one possible implementation, a UE associated with the backscatter transmission is used to receive a backscatter signal sent by an ambient IoT device (hereinafter referred to as IoT device) based on an excitation signal.

[0403] In one possible implementation, the UE associated with the backscatter transmission is used to send an excitation signal to the IoT device and receive a backscatter signal sent by a core network device based on the excitation signal.

[0404] In one possible implementation, the UE associated with the backscatter transmission is configured to parse data information from a received backscatter signal and send the data information to an access network device or a core network device.

[0405] In one possible implementation, the IoT device is configured to send a backscattered signal based on an excitation signal.

[0406] In a possible implementation, the frequency band of the excitation signal sent by the IoT device belongs to the frequency band of cellular mobile communications.

[0407] In one possible implementation, the excitation signal may provide energy for backscattering to the IoT device.

[0408] In one possible implementation, the excitation signal can provide energy for backscattering to multiple IoT devices.

[0409] In one possible implementation, the IoT device includes at least one of the following: a tag device and a sensor device.

[0410] In one embodiment, the wake-up information is included in at least one of the following:

[0411] Paging downlink control information DCI;

[0412] Second paging message;

[0413] System messages, such as System Information Block (SIB).

[0414] In a possible implementation, the wake-up information may occupy M bits, and be used to wake up the UE associated with the backscatter transmission, where M is a positive integer greater than or equal to 1.

[0415] In one embodiment, the indication information associated with the Internet of Things (IoT) service sent to the access network device includes:

[0416] Receive the second service request associated with the IoT service sent by the IoT service network element, and send the indication information associated with the IoT service to the access network device.

[0417] In one possible implementation, the IoT service may be initiated by an IoT service network element, which may include an external server or the like.

[0418] The IoT service network element may send a second service request to the core network device to trigger the IoT service. The second service request is used to indicate at least one of the following: an IoT service identifier of the IoT service, an IoT task identifier of the IoT task, an IoT service association identifier, etc.

[0419] The core network device triggers the IoT service by sending indication information associated with the IoT service to the access network device, instructing the access network device to provide the IoT service.

[0420] After receiving the indication information associated with the IoT service, the access network device may send a wake-up message to wake up the UE associated with the IoT service, or wake up all UEs associated with backscatter transmission.

[0421] In this way, the core network device sends indication information associated with the Internet of Things IoT service to the access network device, and then sends wake-up information to the UE through the access network device to wake up the UE associated with the backscatter transmission. The UE can perform backscatter transmission tasks such as sending excitation signals and / or receiving backscatter, thereby realizing the rapid and low-cost deployment of a passive Internet of Things based on the UE.

[0422] In one embodiment, the wake-up information is used to indicate:

[0423] The UE associated with the Internet of Things IoT service switches from the RRC non-connected state to the RRC connected state.

[0424] In one possible implementation, the wake-up information may occupy M bits, and be used to wake up all UEs associated with the backscatter transmission, where M is a positive integer greater than or equal to 1.

[0425] After receiving the wake-up information, the UE in the RRC non-connected state may switch from the RRC non-connected state to the RRC connected state if it is determined that the UE is associated with the backscatter transmission.

[0426] Exemplarily, the base station may carry wake-up information, such as a bit, in a paging DCI, a paging message, or an SIB. The wake-up information is used to wake up all UEs that support the reader function and / or authorize the UE that can become a reader to enter an RRC connected state, i.e., configure the UE as a reader.

[0427] After receiving the indication information, the UE supporting the reader function and / or the UE authorized to become a reader enters the RRC connected state.

[0428] In one possible implementation, the wake-up message is used to wake up a UE associated with a specific IoT service. The wake-up message may carry indication information associated with the IoT service.

[0429] After receiving the wake-up information and determining that the UE is associated with the IoT service, the UE may switch from the RRC non-connected state to the RRC connected state.

[0430] In a possible implementation, the UE associated with the IoT service may include, but is not limited to: a UE supporting the IoT service and a UE subscribed as a reader of the IoT service.

[0431] In one embodiment, the IoT service includes: an IoT task.

[0432] In a possible implementation, the IoT service may be delivered from the core network device to the access network device in the form of an IoT task.

[0433] The core network device may send an IoT task identifier of the IoT task to the access network device, and the access network device may wake up the UE based on the IoT task identifier of the IoT task.

[0434] In this embodiment, the IoT service identifier of the IoT service may be the IoT task identifier of the IoT task.

[0435] In this way, the access network device sends a wake-up message to the UE to wake up the UE associated with the backscatter transmission. The UE can perform backscatter transmission work such as sending an excitation signal and / or receiving backscatter, thereby realizing a fast and low-cost deployment of a passive Internet of Things based on the UE.

[0436] In one embodiment, the wake-up information includes at least one of the following:

[0437] A bitmap, the bitmap having N wake-up indication units, different wake-up indication units corresponding to different IoT services, the wake-up indication units instructing the UE to switch from the RRC non-connected state to the RRC connected state;

[0438] IoT service identifier, wherein the IoT service identifier is used to indicate the IoT service associated with the UE that switches from the RRC non-connected state to the RRC connected state;

[0439] The identifier of the UE.

[0440] N is a positive integer greater than or equal to 1.

[0441] In one possible implementation, a wake-up indication unit may occupy one or more bits. Each wake-up indication unit corresponds to an IoT service. Different wake-up indication units correspond to different IoT services.

[0442] The setting of the wake-up indication unit in the bitmap may be specified by the communication protocol or agreed upon by the access network device and the UE.

[0443] In a possible implementation, the arrangement order of the wake-up indication units corresponds to the arrangement order of the IoT services in the IoT service list.

[0444] In a possible implementation, the IoT service list may be sent to the UE by an access network device or a core network device.

[0445] In one possible approach, different encoding values ​​of the wake-up indication unit can indicate whether the IoT service associated with the wake-up indication unit requires the UE to wake up. For example, the wake-up indication unit can occupy one bit, with "1" indicating that the UE associated with the IoT service needs to wake up, and "0" indicating that the UE associated with the IoT service does not need to wake up.

[0446] After receiving the bitmap, the UE determines the code value of the wake-up indication element corresponding to the IoT service associated with it in the bitmap. If the code value indicates that wake-up is required, the UE can switch from the RRC non-connected state to the RRC connected state. Otherwise, the UE can remain in the RRC non-connected state.

[0447] For example, the base station can broadcast a list of supported IoT service IDs. The wake-up information sent by the base station is a bitmap for the IoT service ID list, with each bit corresponding to an IoT service. For example, the bitmap corresponds one-to-one with the index of each IoT service ID in the IoT service ID list, from low to high bits. A bit set to 1 indicates that the IoT service corresponding to the IoT service ID in the bit needs to wake up the UE to become a reader.

[0448] In one possible implementation, the wake-up information may directly indicate the IoT service corresponding to the UE that needs to be awakened. The wake-up information may indicate the IoT service by indicating an IoT service identifier.

[0449] Here, the IoT service identifier can uniquely indicate an IoT service.

[0450] After receiving the wake-up information, the UE can determine whether the IoT service associated with itself is consistent with the IoT service identifier indicated by the wake-up information. If they are consistent, the UE can switch from the RRC non-connected state to the RRC connected state. Otherwise, the UE can remain in the RRC non-connected state.

[0451] In a possible implementation, the access network device may determine the UE corresponding to the IoT service, and therefore, the access network device may directly indicate the identifier of the UE in the wake-up information.

[0452] In one possible implementation, the access network device may determine the UE corresponding to the IoT service based on the subscription information of the UE.

[0453] In one possible implementation, the core network device may determine the UE corresponding to the IoT service based on the subscription information of the UE, and indicate the identifier of the UE that needs to be awakened to the access network device.

[0454] After receiving the wake-up information, the UE can determine whether its own identity is consistent with the identity indicated by the wake-up information. If they are consistent, the UE can switch from the RRC non-connected state to the RRC connected state. Otherwise, the UE can maintain the RRC non-connected state.

[0455] In one embodiment, the indication information is used to indicate at least one of the following:

[0456] The IoT service identifier of the IoT service;

[0457] The identifier of the UE.

[0458] The core network device can indicate the IoT service identifier through indication information associated with the IoT service, triggering the access network device to provide the IoT service corresponding to the IoT service identifier. The access network device can send a wake-up message based on the IoT service identifier to wake up at least the UE of the IoT service corresponding to the IoT service identifier.

[0459] The core network device can also determine the UE corresponding to the IoT service and indicate the UE's identity to the access network device through indication information associated with the IoT service. If the UE is in an RRC non-connected state, the access network device can send a wake-up message to wake up the UE.

[0460] In one embodiment, the indication information includes at least one of the following:

[0461] A service request for the IoT service;

[0462] A first paging message associated with the IoT service.

[0463] In one possible manner, the indication information associated with the IoT service may be a service request for the IoT service. The core network device sends the service request to the access network device, where the service request indicates the IoT service identifier of the IoT service and / or the identifier of the UE.

[0464] In one possible manner, the indication information associated with the IoT service may be a first paging message sent by the core network device to the access network device. The first paging message may trigger the access network device to send a wake-up message.

[0465] In some embodiments, handover reason information sent by the UE when switching to the RRC connected state is received, wherein the handover reason information is used to indicate at least one of the following:

[0466] The UE switches to the RRC connected state according to the wake-up information;

[0467] The UE switches to the RRC connected state with the purpose of becoming a reader of the backscatter transmission.

[0468] After receiving the wake-up information, the UE can determine whether to switch from the RRC non-connected state to the RRC connected state based on its own capabilities, and / or contract information, and / or authorization information, and / or whether the UE is associated with the corresponding IoT service, and / or whether the UE identifier is the same as the UE identifier indicated by the wake-up information.

[0469] For a UE that supports the reader function and / or is authorized to become a reader, after receiving the wake-up information, it is determined whether the IoT service identifier associated with or subscribed to the UE requires waking up the UE as a reader. If so, the UE enters the RRC connected state.

[0470] When the UE switches from the RRC non-connected state to the RRC connected state, it can send switching reason information to the access network device.

[0471] In one possible implementation, the handover reason information may be carried in at least one of the following:

[0472] RRC association establishment messages, such as RRC establishment request message, RRC establishment completion message, etc.

[0473] RRC recovery-related messages, such as RRC recovery request message, RRC recovery complete message, etc.

[0474] Exemplarily, the handover cause information (cause value) may be: MT-access (indicating access based on base station wake-up to enter the RRC connected state), or ToBeReader (indicating RRC access for the purpose of becoming a reader).

[0475] If the UE enters the RRC connected state from the RRC unconnected state based on the wakeup information, the wakeup cause value in the RRC association establishment message or the RRC association restoration message can be at least one of the following:

[0476] MT-access: indicates access based on base station wake-up to enter the RRC connection state;

[0477] To Be Reader: Indicates RRC access for the purpose of becoming a reader.

[0478] The following provides a specific example in combination with any of the above embodiments:

[0479] As shown in Figure 12, the IoT service may be initiated by an IoT service network element. The IoT service network element may include an external server, etc.

[0480] The IoT service network element may trigger the IoT service by sending IoT task trigger information (i.e., a second service request) to the core network device. The IoT task trigger information is used to indicate at least one of the following: an IoT service identifier of the IoT service, an IoT task identifier of the IoT task, an identifier associated with the IoT service, etc.

[0481] The core network triggers the IoT service by sending indication information associated with the IoT service to the base station, instructing the access network device to provide the IoT service.

[0482] The instruction information includes at least one of the following:

[0483] IoT task establishment request (i.e., service request for IoT service);

[0484] Paging (i.e., the first paging message associated with the IoT service).

[0485] Method 1: Provide wake-up indication to all UEs with UE consent

[0486] The base station (e.g., gNB) sends an indication information (wake-up information), such as a bit, in the paging DCI, paging message (i.e., second paging message), or SIB (i.e., system message). The indication information is used to wake up all UEs that support the reader function and / or authorize the UE that can become a reader to enter the RRC connected state, i.e., to be configured as a reader.

[0487] For a UE that supports the reader function and / or is authorized to become a reader, upon receiving the indication information, it enters the RRC connected state, and the cause value (i.e., switching cause information) of RRC setup or RRC resume can be: MT-access (indicating access to the RRC connected state based on base station wake-up) or becoming a reader (indicating RRC access for the purpose of becoming a reader).

[0488] Solution 2: Wake-up indication for specific IoT services

[0489] The base station (e.g., gNB) sends an indication message (wake-up message) in the paging DCI, paging message (i.e., second paging message), or SIB (i.e., system message). The indication message is used to wake up all UEs that support the reader function and / or UEs that are authorized to become readers, and UEs that support or are associated with IoT services enter the RRC connected state, that is, to be configured as readers.

[0490] - Option 1: The base station broadcasts a list of supported IoT service IDs. The indication information sent by the base station is a bitmap for the list of IoT service IDs (i.e., IoT service identifiers), where each bit corresponds to an IoT service. For example, the bitmap corresponds one-to-one with the index of each IoT service ID in the IoT service ID list from low to high bits. If the corresponding bit is set to 1, it indicates that the IoT service corresponding to the corresponding IoT service ID needs to wake up the UE to become a reader.

[0491] - Option 2: The indication information sent by the base station includes at least one IoT service, and the IoT service ID needs to wake up the UE to become a reader;

[0492] After receiving the indication information, a UE that supports the reader function and / or is authorized to become a reader determines whether the IoT service ID associated with or subscribed to by the UE requires waking up the UE as a reader. If so, the UE enters the RRC connected state. The cause value of RRC setup or RRC resume (i.e., switching reason information) can be: MT-access (indicating access to the RRC connected state based on base station wake-up), or called Reader (To Be Reader) (indicating RRC access for the purpose of becoming a reader).

[0493] This example proposes waking up a UE in RRC idle state / RRC inactive state and putting it into RRC connected state, with the goal of becoming a reader. This enables fast and low-cost deployment of a passive IoT based on a UE reader.

[0494] As shown in FIG13 , an embodiment of the present disclosure provides an access network device 100, including:

[0495] The transceiver module 110 is configured to send a wake-up message to the UE, wherein the wake-up message is used to instruct the UE associated with the backscatter transmission to switch from the radio resource control RRC non-connected state to the RRC connected state; the RRC non-connected state includes: RRC idle state and / or RRC inactive state.

[0496] In one embodiment, the wake-up information is used to indicate:

[0497] The UE associated with the Internet of Things IoT service switches from the RRC non-connected state to the RRC connected state.

[0498] In one embodiment, the wake-up information includes at least one of the following:

[0499] A bitmap, the bitmap having N wake-up indication units, different wake-up indication units corresponding to different IoT services, the wake-up indication units instructing the UE to switch from the RRC non-connected state to the RRC connected state;

[0500] IoT service identifier, wherein the IoT service identifier is used to indicate the IoT service associated with the UE that switches from the RRC non-connected state to the RRC connected state;

[0501] The identifier of the UE.

[0502] In one embodiment, the transceiver module is specifically configured as follows:

[0503] Receive indication information associated with IoT services sent by core network devices.

[0504] In one embodiment, the indication information includes at least one of the following:

[0505] A service request for the IoT service;

[0506] A first paging message associated with the IoT service.

[0507] In one embodiment, the indication information is used to indicate at least one of the following:

[0508] The IoT service identifier of the IoT service;

[0509] The identifier of the UE.

[0510] In one embodiment, the IoT service includes: an IoT task.

[0511] In one embodiment, the wake-up information is included in at least one of the following:

[0512] Paging downlink control information DCI;

[0513] Second paging message;

[0514] System message.

[0515] In one embodiment, the transceiver module is further configured to:

[0516] Receive handover reason information sent by the UE when switching to the RRC connected state, wherein the handover reason information is used to indicate at least one of the following:

[0517] The UE switches to the RRC connected state according to the wake-up information;

[0518] The UE switches to the RRC connected state with the purpose of becoming a reader of the backscatter transmission.

[0519] In one embodiment, the UE includes at least one of the following:

[0520] the UE being authorized to be the backscatter transmission reader;

[0521] the UE desiring or intending to become the reader;

[0522] The UE is supported to become the reader.

[0523] The reader is used for at least one of the following: sending an excitation signal of the backscatter transmission; receiving a backscatter signal of the backscatter transmission and determining data information carried by the backscatter signal; and transmitting data information carried by the backscatter signal.

[0524] As shown in FIG14 , an embodiment of the present disclosure provides a core network device 200, including:

[0525] The transceiver module 210 is configured to send indication information associated with the Internet of Things (IoT) service to the access network device, where the indication information is used to trigger the access network device to send wake-up information to the user equipment UE, wherein the wake-up information is used to instruct the user equipment UE associated with backscatter transmission to switch from the radio resource control (RRC) non-connected state to the RRC connected state; the RRC non-connected state includes: RRC idle state and / or RRC inactive state.

[0526] In one embodiment, the wake-up information is used to indicate:

[0527] The UE associated with the IoT service switches from the RRC non-connected state to the RRC connected state.

[0528] In one embodiment, the wake-up information includes at least one of the following:

[0529] A bitmap, the bitmap having N wake-up indication units, different wake-up indication units corresponding to different IoT services, the wake-up indication units instructing the UE to switch from the RRC non-connected state to the RRC connected state;

[0530] IoT service identifier, wherein the IoT service identifier is used to indicate the IoT service associated with the UE that switches from the RRC non-connected state to the RRC connected state;

[0531] The identifier of the UE.

[0532] In one embodiment, the indication information includes at least one of the following:

[0533] a first service request for the IoT service;

[0534] A first paging message associated with the IoT service.

[0535] In one embodiment, the indication information is used to indicate at least one of the following:

[0536] The IoT service identifier of the IoT service;

[0537] The identifier of the UE.

[0538] In one embodiment, the IoT service includes: an IoT task.

[0539] In one embodiment, the wake-up information is included in at least one of the following:

[0540] Paging downlink control information DCI;

[0541] Second paging message;

[0542] System message.

[0543] In one embodiment, the UE includes at least one of the following:

[0544] the UE being authorized to be the backscatter transmission reader;

[0545] the UE desiring or intending to become the reader;

[0546] The UE is supported to become the reader.

[0547] In one embodiment, the transceiver module is specifically configured as follows:

[0548] Receive the second service request associated with the IoT service sent by the IoT service network element, and send the indication information associated with the IoT service to the access network device.

[0549] As shown in FIG15 , an embodiment of the present disclosure provides a user equipment UE300, including:

[0550] The transceiver module 310 is configured to: receive wake-up information sent by the access network device, wherein the wake-up information is used to instruct the UE associated with the backscatter transmission to switch from the radio resource control RRC non-connected state to the RRC connected state, wherein the RRC non-connected state includes: RRC idle state and / or RRC inactive state.

[0551] In one embodiment, the wake-up information is used to indicate:

[0552] The UE associated with the Internet of Things IoT service switches from the RRC non-connected state to the RRC connected state.

[0553] In one embodiment, the wake-up information includes at least one of the following:

[0554] A bitmap, the bitmap having N wake-up indication units, different wake-up indication units corresponding to different IoT services, the wake-up indication units instructing the UE to switch from the RRC non-connected state to the RRC connected state;

[0555] IoT service identifier, wherein the IoT service identifier is used to indicate the IoT service associated with the UE that switches from the RRC non-connected state to the RRC connected state;

[0556] UE identifier.

[0557] In one embodiment, the IoT service includes: an IoT task.

[0558] In one embodiment, the apparatus further comprises:

[0559] The processing module 320 is configured to determine, based on the wake-up information, to switch from the RRC non-connected state to the RRC connected state.

[0560] In one embodiment, the processing module is specifically configured to include:

[0561] Determine that the UE is associated with backscatter transmission, and / or determine that the UE is associated with the IoT service indicated by the wake-up information, and / or determine that the UE identifier is the same as the UE identifier indicated by the wake-up information, and switch from the RRC non-connected state to the RRC connected state.

[0562] In one embodiment, the transceiver module is further configured to determine to switch from the RRC non-connected state to the RRC connected state, and send switching reason information to the access network device, wherein the switching reason information is used to indicate at least one of the following:

[0563] The UE switches to the RRC connected state according to the wake-up information;

[0564] The UE switches to the RRC connected state with the purpose of becoming a reader of the backscatter transmission.

[0565] In one embodiment, the wake-up information is included in at least one of the following:

[0566] Paging downlink control information DCI;

[0567] Second paging message;

[0568] System message.

[0569] In one embodiment, the UE is associated with the backscatter transmission, including at least one of the following:

[0570] The UE is authorized to be a reader of the backscatter transmission;

[0571] The UE expects or intends to become the reader;

[0572] The UE supports becoming the reader;

[0573] The reader is used for at least one of the following: sending an excitation signal of the backscatter transmission; receiving a backscatter signal of the backscatter transmission and determining data information carried by the backscatter signal; and transmitting data information carried by the backscatter signal.

[0574] An embodiment of the present disclosure provides a communication device, including:

[0575] processor;

[0576] a memory for storing processor-executable instructions;

[0577] The processor is configured to implement the information transmission method of any embodiment of the present disclosure when running the executable instructions.

[0578] In one embodiment, the communication equipment may include, but is not limited to, at least one of: a network control relay and a network device. The network device may include a core network or access network device. The access network device may include an access network device; the core network may include an AMF and an SMF.

[0579] The processor may include various types of storage media, which are non-temporary computer storage media that can continue to store information after the user device loses power.

[0580] The processor may be connected to the memory via a bus or the like, and may be configured to read an executable program stored in the memory, for example, at least one of the methods shown in FIG. 5 to FIG. 12 .

[0581] The present disclosure also provides a computer storage medium storing a computer executable program, which, when executed by a processor, implements the information transmission method of any embodiment of the present disclosure, such as at least one of the methods shown in Figures 5 to 12.

[0582] Regarding the device or storage medium in the above embodiment, the specific manner in which each module performs operations has been described in detail in the embodiment of the method and will not be elaborated here.

[0583] Figure 16 is a block diagram of a UE 800 according to an exemplary embodiment. For example, the UE 800 may be a mobile phone, a computer, a digital broadcast user equipment, a messaging device, a game console, a tablet device, a medical device, a fitness device, a personal digital assistant, etc.

[0584] 16 , UE 800 may include one or more of the following components: a processing component 802 , a memory 804 , a power component 806 , a multimedia component 808 , an audio component 810 , an input / output (I / O) interface 812 , a sensor component 814 , and a communication component 816 .

[0585] The processing component 802 generally controls the overall operation of the UE 800, such as operations associated with display, phone calls, data communications, camera operation, and recording operations. The processing component 802 may include one or more processors 820 to execute instructions to perform all or part of the steps of the above-described method. In addition, the processing component 802 may include one or more modules to facilitate interaction between the processing component 802 and other components. For example, the processing component 802 may include a multimedia module to facilitate interaction between the multimedia component 808 and the processing component 802.

[0586] The memory 804 is configured to store various types of data to support operations on the UE 800. Examples of such data include instructions for any application or method operating on the UE 800, contact data, phone book data, messages, pictures, videos, etc. The memory 804 can be implemented by any type of volatile or non-volatile storage device, or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic disk, or optical disk.

[0587] The power component 806 provides power to various components of the UE 800. The power component 806 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power to the UE 800.

[0588] The multimedia component 808 includes a screen that provides an output interface between the UE 800 and the user. In some embodiments, the screen may include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive input signals from the user. The touch panel includes one or more touch sensors to sense touches, slides, and gestures on the touch panel. The touch sensor may not only sense the boundaries of a touch or slide action, but also detect the duration and pressure associated with the touch or slide operation. In some embodiments, the multimedia component 808 includes a front camera and / or a rear camera. When the UE 800 is in an operating mode, such as a shooting mode or a video mode, the front camera and / or the rear camera may receive external multimedia data. Each front camera and rear camera may be a fixed optical lens system or have focal length and optical zoom capabilities.

[0589] The audio component 810 is configured to output and / or input audio signals. For example, the audio component 810 includes a microphone (MIC) that is configured to receive external audio signals when the UE 800 is in an operating mode, such as a call mode, a recording mode, and a voice recognition mode. The received audio signals may be further stored in the memory 804 or transmitted via the communication component 816. In some embodiments, the audio component 810 further includes a speaker for outputting audio signals.

[0590] I / O interface 812 provides an interface between processing component 802 and peripheral interface modules, such as a keyboard, click wheel, buttons, etc. These buttons may include but are not limited to: a home button, volume buttons, a start button, and a lock button.

[0591] The sensor assembly 814 includes one or more sensors for providing various aspects of the status assessment of the UE 800. For example, the sensor assembly 814 can detect the open / closed state of the device 800, the relative positioning of components, such as the display and keypad of the UE 800. The sensor assembly 814 can also detect changes in the position of the UE 800 or a component of the UE 800, the presence or absence of user contact with the UE 800, the orientation or acceleration / deceleration of the UE 800, and changes in the temperature of the UE 800. The sensor assembly 814 may include a proximity sensor configured to detect the presence of nearby objects without any physical contact. The sensor assembly 814 may also include an optical sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor assembly 814 may also include an accelerometer, a gyroscope, a magnetic sensor, a pressure sensor, or a temperature sensor.

[0592] The communication component 816 is configured to facilitate wired or wireless communication between the UE 800 and other devices. The UE 800 can access a wireless network based on a communication standard, such as WiFi, 2G or 3G, or a combination thereof. In an exemplary embodiment, the communication component 816 receives a broadcast signal or broadcast-related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 816 also includes a near field communication (NFC) module to facilitate short-range communication. For example, the NFC module can be implemented based on radio frequency identification (RFID) technology, infrared data association (IrDA) technology, ultra-wideband (UWB) technology, Bluetooth (BT) technology and other technologies.

[0593] In an exemplary embodiment, UE800 may be implemented by one or more application-specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable gate arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic components to perform the above methods.

[0594] In an exemplary embodiment, a non-transitory computer-readable storage medium including instructions is also provided, such as a memory 804 including instructions, which can be executed by the processor 820 of the UE 800 to perform the above method. For example, the non-transitory computer-readable storage medium can be a ROM, a random access memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, etc.

[0595] As shown in Figure 17, an embodiment of the present disclosure shows the structure of an access device. For example, the communication device 900 can be provided as a network device. The communication device can be various network elements such as the aforementioned access network element and / or network function.

[0596] 17 , the communication device 900 includes a processing component 922, which further includes one or more processors, and memory resources represented by a memory 932 for storing instructions executable by the processing component 922, such as applications. The applications stored in the memory 932 may include one or more modules, each corresponding to a set of instructions. Furthermore, the processing component 922 is configured to execute instructions to perform any of the aforementioned methods applied to the access device, such as the methods shown in any of Figures 5 to 12 .

[0597] The communication device 900 may also include a power supply component 926 configured to perform power management of the communication device 900, a wired or wireless network interface 950 configured to connect the communication device 900 to a network, and an input / output (I / O) interface 958. The communication device 900 may operate based on an operating system stored in the memory 932, such as Windows Server™, Mac OS X™, Unix™, Linux™, FreeBSD™, or the like.

[0598] In the absence of contradiction, each step in the above-mentioned embodiment or example can be implemented as an independent embodiment, and the steps can be arbitrarily combined. For example, a solution after removing some steps in a certain embodiment or example can also be implemented as an independent embodiment, and the order of the steps in a certain embodiment or example can be arbitrarily exchanged. In addition, the optional methods or optional examples in a certain embodiment or example can be arbitrarily combined; in addition, the embodiments or examples can be arbitrarily combined. For example, some or all steps of different embodiments or examples can be arbitrarily combined, and a certain embodiment or example can be arbitrarily combined with the optional methods or optional examples of other embodiments or examples.

[0599] Other embodiments of the present invention will readily occur to those skilled in the art after considering the specification and practicing the invention disclosed herein. This disclosure is intended to cover any variations, uses, or adaptations of the invention that follow from the general principles of the invention and include common knowledge or customary techniques in the art not disclosed herein. The description and examples are to be considered as exemplary only, with the true scope and spirit of the invention being indicated by the following claims.

[0600] It should be understood that the present invention is not limited to the exact construction described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present invention is limited only by the appended claims.

Claims

1. A method for transmitting information, wherein: Executed by access network equipment, including: Sending wake-up information to a user equipment UE, wherein the wake-up information is used to instruct the UE associated with backscatter transmission to switch from a radio resource control RRC non-connected state to an RRC connected state; the RRC non-connected state includes: an RRC idle state and / or an RRC inactive state.

2. The method according to claim 1, wherein: The wake-up information is also used to instruct the UE associated with the Internet of Things IoT service to switch from the RRC non-connected state to the RRC connected state.

3. The method according to claim 2, wherein: The wake-up information includes at least one of the following: A bitmap, wherein the bitmap has N wake-up indication units, different IoT services correspond to different wake-up indication units, and the wake-up indication units instruct the UE to switch from the RRC non-connected state to the RRC connected state; An IoT service identifier, used to indicate the IoT service associated with the UE; The identifier of the UE.

4. The method according to any one of claims 1 to 3, wherein: The method further comprises: Receive indication information associated with IoT services sent by the core network device.

5. The method according to claim 4, wherein: The indication information includes at least one of the following: A service request for the IoT service; A first paging message associated with the IoT service.

6. The method according to claim 4 or 5, wherein: The indication information is used to indicate at least one of the following: IoT service identifier; The identifier of the UE.

7. The method according to any one of claims 1 to 6, wherein: The wake-up information is included in at least one of the following: Paging downlink control information DCI; A second paging message; System messages.

8. The method according to any one of claims 1 to 7, wherein: The method further comprises: Receiving switching reason information sent by the UE when switching to the RRC connected state, wherein the switching reason information is used to indicate at least one of the following: The UE switches to the RRC connected state according to the wake-up information; The UE switches to the RRC connected state with the purpose of becoming a reader of the backscatter transmission.

9. The method according to any one of claims 1 to 8, wherein: The UE is at least one of the following: said UE being authorized to be a reader of said backscatter transmission; the UE that desires or intends to become the reader; The UE is supported to become the reader.

10. A method for transmitting information, wherein: The method is executed by a user equipment UE and includes: Receive wake-up information sent by an access network device, wherein the wake-up information is used to instruct the UE associated with backscatter transmission to switch from a radio resource control RRC non-connected state to an RRC connected state, wherein the RRC non-connected state includes: an RRC idle state and / or an RRC inactive state.

11. The method according to claim 10, wherein: The wake-up information is used to indicate: The UE associated with the Internet of Things IoT service switches from the RRC non-connected state to the RRC connected state.

12. The method according to claim 11, wherein: The wake-up information includes at least one of the following: A bitmap, wherein the bitmap has N wake-up indication units, different wake-up indication units corresponding to different IoT services, and the wake-up indication units instruct the UE to switch from the RRC non-connected state to the RRC connected state; An IoT service identifier, used to indicate the IoT service associated with the UE; UE identifier.

13. The method according to any one of claims 11 to 12, wherein: The method further comprises: Based on the wake-up information, it is determined to switch from the RRC non-connected state to the RRC connected state.

14. The method according to claim 13, wherein: The determining, based on the wake-up information, to switch from the RRC non-connected state to the RRC connected state comprises: Determine that the UE is associated with backscatter transmission, and / or determine that the UE is associated with the IoT service indicated by the wake-up information, and / or determine that the UE identifier is the same as the UE identifier indicated by the wake-up information, and switch from the RRC non-connected state to the RRC connected state.

15. The method according to any one of claims 11 to 14, wherein: The method further comprises: determining to switch from the RRC non-connected state to the RRC connected state, and sending switching reason information to the access network device, wherein the switching reason information is used to indicate at least one of the following: The UE switches to the RRC connected state according to the wake-up information; The UE switches to the RRC connected state with the purpose of becoming a reader of the backscatter transmission.

16. The method according to any one of claims 11 to 15, wherein: The wake-up information is included in at least one of the following: Paging downlink control information DCI; A second paging message; System messages.

17. The method according to any one of claims 11 to 16, wherein: The UE is at least one of the following: The UE is authorized to be a reader; The UE expects or intends to become the reader; The UE supports being the reader.

18. An access network device, wherein: include: The transceiver module is configured to send a wake-up message to a user equipment UE, wherein the wake-up message is used to indicate a wake-up message associated with a reverse The UE of scatter transmission switches from a radio resource control RRC non-connected state to an RRC connected state; the RRC non-connected state includes: an RRC idle state and / or an RRC inactive state.

19. A user equipment, wherein: include: The transceiver module is configured to: receive wake-up information sent by an access network device, wherein the wake-up information is used to instruct a UE associated with backscatter transmission to switch from a radio resource control RRC non-connected state to an RRC connected state, wherein the RRC non-connected state includes: an RRC idle state and / or an RRC inactive state.

20. A communication system, comprising an access network device and a user equipment UE, wherein: The access network device executes the information transmission method provided by any one of claims 1 to 9; The UE executes the information transmission method provided in any one of claims 10 to 17.

21. A communication device comprising a processor, a transceiver, a memory, and an executable program stored in the memory and capable of being run by the processor, wherein: When the processor runs the executable program, the information transmission method provided in any one of claims 1 to 9 or 10 to 17 is executed.

22. A computer storage medium storing an executable program; after the executable program is executed by a processor, it can implement the information transmission method provided in any one of claims 1 to 9 or 10 to 17.

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