Access method and apparatus

Abstract

Embodiments of the present application provide an access method and apparatus. The method comprises: a first device receives first information from a second device, wherein the first information is carried by a first channel; and at least on the basis of the first information, the first device sends second information by backscattering a first waveform, wherein the second information is at least used for responding to the first information.

Description

Access method and device Technical Field

[0001] The embodiments of the present application relate to the field of communication technologies. Background Art

[0002] From the 2G era to the early days of 4G, cellular mobile communication systems primarily served mobile phones—mobile terminal devices held by people. With the rapid development of mobile internet and the Internet of Things (IoT), the technological evolution of cellular mobile communication systems, starting in the late 4G era and continuing to this day, has considered and supported an increasingly diverse range of IoT application scenarios. Consequently, a wider variety of IoT device types have been supported and implemented in actual network deployments and service applications, including eMTC, NB-IoT, and RedCap. With this increasing diversity of IoT terminal devices, cellular mobile systems have increasingly enhanced their capabilities for providing services tailored to vertical industries.

[0003] It should be noted that the above introduction to the technical background is merely intended to provide a clear and complete description of the technical solutions of this application and facilitate understanding by those skilled in the art. Simply because these solutions are described in the background technology section of this application, it should not be assumed that the above technical solutions are well known to those skilled in the art.

[0004] Summary of the Invention

[0005] Among the vast number of IoT devices, cellular mobile communication systems still lack the capacity to support a large number of lower-cost IoT terminals. To provide more robust, reliable, and complete IoT application solutions, supporting these lower-cost IoT terminals within 3GPP cellular mobile systems has become a pressing issue.

[0006] RFID systems are a solution for the massive and cost-effective deployment of IoT devices. They are widely used. Their advantages include low tag costs and affordability. RFID tags are small, limiting the size and material of the items they can be used on, making them suitable for various scenarios such as item management and tracking. Despite their low tag costs, the deployment and operating costs of RFID systems are higher than those of wide-area commercial networks. Deployment is typically localized, using dedicated networks, making it difficult to effectively distribute deployment costs. Regarding usage, if manual handheld tag readers are used, labor costs can become a major expense and are difficult to reduce. Deployment costs can be significantly increased if dedicated RFID ports or gateways are used for reading and management. Furthermore, RFID systems have a simple logical architecture and loose radio resource management, making it difficult to effectively manage interference from radio wave transmissions. Consequently, RFID systems generally have low system capacity and spectrum efficiency.

[0007] Compared to existing RFID systems, leveraging existing commercial mobile communication cellular networks (such as LTE and 5G NR systems) to support industry applications requiring tag-based IoT devices can effectively reduce deployment costs and, in turn, lower the barrier to entry for deploying these IoT devices. Furthermore, existing commercial mobile communication cellular networks (such as LTE and 5G NR systems) offer far superior network security and wireless resource management effectiveness than existing RFID systems.

[0008] Taking 5G systems as an example, they provide reliable authentication, network coordination, and accurate and stable terminal device management mechanisms. These systems can safely and effectively reduce labor costs, thereby lowering the cost of using this type of IoT. They can also optimize the network to increase system capacity and spectrum efficiency. These reductions in deployment and operating costs will effectively promote the application of these IoT devices in business management and industrial manufacturing, accelerating the digitalization of these industries, improving production efficiency, and ultimately promoting social development.

[0009] As a new type of IoT terminal in the 5G system, tag-type terminal devices (Ambient IoT devices, referred to as AIoT devices) are severely cost-constrained. The hardware capabilities of the devices are significantly weaker than those of ordinary smartphones and other IoT-type devices supported by existing cellular mobile communication systems. For example, tag-type terminal devices may not have a stable power supply (for example, using ambient energy harvesting instead of conventional batteries), have a narrow bandwidth, and the accuracy of the internal crystal oscillator is limited due to cost constraints, and the signal processing capability is limited.

[0010] The inventors discovered that in the existing 5G system, the initial access between a terminal device and a base station (network device) requires the terminal device to actively initiate the initial access. This requires the terminal device to support the device-originated autonomous (DO-DTT) service type. However, in reality, many tag-type terminal devices cannot support this service type. Therefore, the initial access mechanism between the terminal device and the base station (network device) in the existing 5G system cannot be reused, that is, the existing initial access process cannot be used to complete the initial access of the tag-type terminal device. How to solve the initial access problem between the tag-type terminal device and the base station (network device) has become an urgent problem to be solved.

[0011] To address at least one of the above problems, embodiments of the present application provide an access method and apparatus.

[0012] According to a first aspect of an embodiment of the present application, an access method is provided, comprising: a first device receiving first information from a second device, the first information being carried through a first channel; the first device sending second information based at least on the first information and by backscattering a first waveform, the second information being used at least to respond to the first information.

[0013] According to a second aspect of an embodiment of the present application, an access method is provided, the method comprising: a second device sending first information, the first information being carried or sent through a first channel; the second device receiving second information from the first device, the second information being at least used to respond to the first information.

[0014] According to a third aspect of an embodiment of the present application, an access device is provided, which is arranged in a first device and includes: a first receiving unit, which receives first information from a second device, and the first information is carried through a first channel; a first sending unit, which sends second information based on at least the first information and by backscattering a first waveform, and the second information is at least used to respond to the first information.

[0015] According to the fourth aspect of an embodiment of the present application, an access device is provided, which is arranged in a second device, and the device includes: a second sending unit, which sends first information, and the first information is carried or sent through a first channel; a second receiving unit, which receives second information from the first device, and the second information is at least used to respond to the first information.

[0016] According to a fifth aspect of an embodiment of the present application, a terminal device is provided, wherein the terminal device includes the apparatus according to the third aspect of an embodiment of the present application.

[0017] According to a sixth aspect of an embodiment of the present application, a network device is provided, comprising the apparatus according to the fourth aspect of an embodiment of the present application.

[0018] According to the seventh aspect of the embodiment of the present application, a communication system is provided, which includes the terminal device according to the fifth aspect of the embodiment of the present application and / or the network device according to the sixth aspect of the embodiment of the present application.

[0019] According to the eighth aspect of the embodiment of the present application, a computer-readable program is provided, wherein when the program is executed in an access device or a terminal device, the program causes the access device or the terminal device to execute the access method described in the first aspect of the embodiment of the present application.

[0020] According to the ninth aspect of the embodiment of the present application, a computer-readable program is provided, wherein when the program is executed in an access device or a network device, the program causes the access device or the network device to execute the access method described in the second aspect of the embodiment of the present application.

[0021] According to the tenth aspect of the embodiment of the present application, a storage medium storing a computer-readable program is provided, wherein the computer-readable program enables an access device or a terminal device to execute the access method described in the first aspect of the embodiment of the present application.

[0022] According to the eleventh aspect of the embodiment of the present application, a storage medium storing a computer-readable program is provided, wherein the computer-readable program enables an access device or a network device to execute the access method described in the second aspect of the embodiment of the present application.

[0023] One of the beneficial effects of the embodiments of the present application is that initial access can be completed without requiring the first device to support the device-initiated (DO-DTT) service type, thereby reducing device costs.

[0024] With reference to the following description and accompanying drawings, specific embodiments of the present application are disclosed in detail, indicating the manner in which the principles of the present application can be employed. It should be understood that the embodiments of the present application are not limited in scope. Within the spirit and scope of the appended claims, the embodiments of the present application include many variations, modifications and equivalents.

[0025] Features described and / or illustrated with respect to one embodiment may be used in the same or similar manner in one or more other embodiments, combined with features in other embodiments, or substituted for features in other embodiments.

[0026] It should be emphasized that the term "include / comprising" when used herein refers to the presence of features, integers, steps or components, but does not exclude the presence or addition of one or more other features, integers, steps or components. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The elements and features described in one figure or one embodiment of the present application can be combined with the elements and features shown in one or more other figures or embodiments. In addition, in the accompanying drawings, similar reference numerals represent corresponding parts in several figures and can be used to indicate corresponding parts used in more than one embodiment.

[0028] FIG1 is a schematic diagram of a communication system according to an embodiment of the present application;

[0029] FIG2 is a schematic diagram of a topology of a communication system according to an embodiment of the present application;

[0030] FIG3 is a schematic diagram of an access method according to an embodiment of the present application;

[0031] FIG4 is an interaction diagram of an implementation of an access method according to an embodiment of the present application;

[0032] FIG5 is another schematic diagram of the access method according to an embodiment of the present application;

[0033] FIG6 is another schematic diagram of the access method according to an embodiment of the present application;

[0034] FIG7 is an interaction diagram of another implementation of the access method according to an embodiment of the present application;

[0035] FIG8 is another schematic diagram of the access method according to an embodiment of the present application;

[0036] FIG9 is an interaction diagram of another implementation of the access method according to an embodiment of the present application;

[0037] FIG10 is a schematic diagram of an access method according to an embodiment of the present application;

[0038] FIG11 is a schematic diagram of an access device according to an embodiment of the present application;

[0039] FIG12 is another schematic diagram of an access device according to an embodiment of the present application;

[0040] FIG13 is a schematic block diagram of a system structure of a first device according to an embodiment of the present invention;

[0041] FIG14 is a schematic block diagram of the system structure of the second device according to an embodiment of the present application. DETAILED DESCRIPTION

[0042] The above and other features of the present application will become apparent through the following description with reference to the accompanying drawings. In the description and the accompanying drawings, specific embodiments of the present application are disclosed in detail, which illustrate some embodiments in which the principles of the present application can be adopted. It should be understood that the present application is not limited to the described embodiments. On the contrary, the present application includes all modifications, variations and equivalents that fall within the scope of the appended claims.

[0043] In the embodiments of the present application, the terms "first", "second", etc. are used to distinguish different elements from the name, but do not indicate the spatial arrangement or temporal order of these elements, and these elements should not be limited by these terms. The term "and / or" includes any one and all combinations of one or more of the associated listed terms. The terms "comprising", "including", "having", etc. refer to the presence of the stated features, elements, components or components, but do not exclude the presence or addition of one or more other features, elements, components or components.

[0044] In the embodiments of this application, the singular forms "a," "the," etc. include plural forms and should be broadly understood to mean "a" or "a type" rather than being limited to "one." Furthermore, the term "said" should be understood to include both singular and plural forms, unless the context clearly indicates otherwise. Furthermore, the term "according to" should be understood to mean "at least in part based on...", and the term "based on" should be understood to mean "at least in part based on...", unless the context clearly indicates otherwise.

[0045] In the embodiments of the present application, the term "communication network" or "wireless communication network" may refer to a network that complies with any of the following communication standards, such as Long Term Evolution (LTE), enhanced Long Term Evolution (LTE-A, LTE-Advanced), Wideband Code Division Multiple Access (WCDMA), High-Speed ​​Packet Access (HSPA), etc.

[0046] Furthermore, communication between devices in the communication system may be carried out according to communication protocols of any stage, for example, including but not limited to the following communication protocols: 1G (generation), 2G, 2.5G, 2.75G, 3G, 4G, 4.5G and 5G, New Radio (NR), future 6G, etc., and / or other communication protocols currently known or to be developed in the future.

[0047] FIG1 is a schematic diagram of a communication system according to an embodiment of the present application. As shown in FIG1 , the communication system 100 includes a first device 101 , a second device 102 , a third device 103 , and a fourth device 104 .

[0048] The first device 101, the third device 103, and the fourth device 104 are different terminal devices, and the terminal devices include, for example, AIoT devices, tags, tag-type terminals, etc.;

[0049] The second device 102 is a network device (e.g., a gNB), or a reader, or an intermediate node;

[0050] In the embodiments of the present application, the term "network device" refers to, for example, a device in a communication system that connects a terminal device to the communication network and provides services to the terminal device. Network devices may include, but are not limited to, the following devices: base station (BS), access point (AP), transmission reception point (TRP), broadcast transmitter, mobile management entity (MME), gateway, server, radio network controller (RNC), base station controller (BSC), etc.

[0051] Among them, base stations may include but are not limited to: NodeB (NodeB or NB), evolved NodeB (eNodeB or eNB) and 5G base station (gNB), IAB host, etc., and may also include remote radio head (RRH, Remote Radio Head), remote radio unit (RRU, Remote Radio Unit), relay (relay) or low-power node (such as femeto, pico, etc.). The term "base station" can include some or all of their functions. Each base station can provide communication coverage for a specific geographical area. The term "cell" can refer to a base station and / or its coverage area, depending on the context in which the term is used.

[0052] In the embodiment of the present application, the "intermediate node" can be a relay device (relay), IAB node (IAB node), terminal device (UE), repeater (repeater), etc. with AIoT capabilities.

[0053] In the embodiments of the present application, the term "user equipment" (UE) or "terminal equipment" (TE) refers to, for example, a device that accesses a communication network through a network device and receives network services. A terminal device can be fixed or mobile and may also be referred to as a mobile station (MS), a terminal, a subscriber station (SS), an access terminal (AT), a station, and so on.

[0054] In the embodiments of the present application, the terminal device may include, but is not limited to: Ambient IoT devices (abbreviated as AIoT devices), tags, tag-type terminals, etc.

[0055] In addition, the term "network side" or "network device side" refers to one side of the network, which can be a base station or one or more network devices as described above. The term "user side" or "terminal side" or "terminal device side" refers to the user or terminal side, which can be a UE or one or more terminal devices as described above. Unless otherwise specified herein, "device" can refer to either network equipment or terminal equipment.

[0056] The following describes the scenarios of the embodiments of the present application through more specific examples, but the present application is not limited thereto.

[0057] FIG2 is a schematic diagram of a topology of a communication system according to an embodiment of the present application, wherein (a) and (b) in FIG2 are two different topologies.

[0058] As shown in Figure 2(a), a network device (base station) can communicate directly with an AIoT device, sending signals directly to the AIoT device or receiving signals directly from the AIoT device. The communication between the network device and the AIoT device includes AIoT data and / or signaling. In addition, in this topology, the network device that sends signals to the AIoT device may be a different network device than the network device that receives signals from the AIoT device.

[0059] As shown in (b) of Figure 2, the network device (base station) can also pass through an intermediate node and use the intermediate node to send signals to the AIoT device or use the intermediate node to receive signals from the AIoT device, that is, the AIoT device communicates bidirectionally with an intermediate node between a network device and the AIoT device.

[0060] In the embodiment of the present application, the intermediate node can be a relay device (relay), IAB node (IAB node), terminal device (UE), repeater (repeater), etc. with AIoT capabilities. The intermediate node transmits AIoT data and / or signaling between the AIoT device and the network device (base station).

[0061] In the embodiments of the present application, a network device may send signals / information / configurations to an AIoT device, or an AIoT device may receive signals / information / configurations from a network device. This may be done directly by the network device and received by the AIoT device, or by the network device via an intermediate node and received by the AIoT device, or by the network device using other methods and received by the AIoT device. Unless otherwise specified, this application is not limited to this.

[0062] In the embodiments of the present application, when an AIoT device sends a signal / information to a network device, or when a network device receives a signal / information from an AIoT device, the AIoT device may send the signal and the network device may receive it directly, or the AIoT device may send the signal and the network device may receive it via an intermediate node, or the AIoT device may send the signal and the network device may receive it via other methods. Unless otherwise specified, the present application is not limited to this.

[0063] Embodiments of the first aspect

[0064] An embodiment of the present application provides an access method, which is applied to a first device, such as the first device 101 in Figure 1 or the AIoT device in Figure 2.

[0065] FIG3 is a schematic diagram of an access method according to an embodiment of the present application. As shown in FIG3 , the method includes:

[0066] 301: A first device receives first information from a second device, where the first information is carried via a first channel.

[0067] 302: The first device sends second information based on at least the first information by backscattering the first waveform, where the second information is at least used to respond to the first information.

[0068] It is worth noting that the above is merely an illustrative description of the embodiments of the present application, and the present application is not limited thereto. For example, the execution order of the various operations may be appropriately adjusted, and other operations may be added or some operations may be reduced. Those skilled in the art may make appropriate modifications based on the above content, and are not limited to the description in FIG3 above.

[0069] In some embodiments, "access" may also be replaced by one of "registration", "authentication", "interaction" and "inventory".

[0070] In some embodiments, the first device is a terminal device, for example, a tag or tag-type terminal device, an ambient IoT device (Ambient IoT device, referred to as AIoT device), or a passive IoT device;

[0071] In some embodiments, the second device is a network device (e.g., a gNB), or a reader, or an intermediate node; the intermediate node can be a relay device with AIoT capabilities, an IAB node, a terminal device (UE), a repeater, etc.

[0072] In operation 301, a first device receives first information from a second device. For example, the first information includes at least one of frequency information, grouping information, counting information, and timing information.

[0073] In some embodiments, the first device receives first information from the second device at a first frequency.

[0074] In some embodiments, the first information is sent by the second device via broadcast or multicast, or the first information is sent to a group of devices or all devices.

[0075] In some embodiments, the first information is carried or sent via a first channel, for example, the first channel is one of a PDSCH, a PDCCH, and an IoT-specific channel.

[0076] In some embodiments, the first device has a first layer and a second layer; for example, the first layer is a low layer and the second layer is a high layer. For example, the first layer is a physical layer, and / or the second layer is an AIoT adaptation layer.

[0077] In some embodiments, a first layer of the first device receives the first information.

[0078] In operation 302 , the first device sends second information based on at least the first information by backscattering a first waveform, where the second information is at least used to respond to the first information.

[0079] In some embodiments, when the information stored by the first device matches the first information or a portion of the first information, the first device sends the second information by backscattering the first waveform.

[0080] For example, when at least one of the frequency information and grouping information stored in the first device matches or partially matches the content of at least one of the frequency information and grouping information in the first information, the first device sends the second information by backscattering the first waveform.

[0081] In some embodiments, the first layer of the first device delivers the received first information or the payload of the first information to the second layer of the first device; the second layer determines to send the second information based on the first information or the payload of the first information.

[0082] In some embodiments, the second information includes at least one of a second waveform obtained by backscattering the first waveform, frequency information, grouping information, an N-bit random number, a first identifier (ID), and a second identifier (ID).

[0083] That is, the second information may be other information sent using the second waveform, or the second waveform itself. That is, the second information may include other information carried, or may not include the carried information but only the second waveform itself.

[0084] For example, the first layer of the first device backscatters the first waveform to generate a second waveform; the second layer of the first device generates other information in the second information other than the second waveform and delivers the other information to the first layer of the first device. The first layer of the first device sends the second information by backscattering the first waveform.

[0085] In some embodiments, the first waveform may be a continuous waveform (CW), a carrier waveform (CW), a backscattered / backscattering wave, an uplink waveform, etc., but the present application is not limited thereto.

[0086] In some embodiments, a first device sends second information by backscattering a first waveform. The first waveform is a waveform sent by a second device or another device. The first device modulates the information to be sent to the second device onto the first waveform by adjusting its backscatter circuit, and then backscatters the modulated first waveform. In the embodiments of the present application, the waveform obtained by backscattering the first waveform is referred to as the second waveform.

[0087] For example, the first device receives the first waveform at a first frequency and backscatters the modulated first waveform at the first frequency. For another example, the first device receives the first waveform at a first frequency and backscatters the modulated first waveform at a second frequency.

[0088] In some embodiments, the second information is carried or sent via the second channel, that is, other information carried is sent via the second channel.

[0089] In some embodiments, the second channel is one of a PUSCH and an IoT-specific channel.

[0090] In some embodiments, the first information is sent in segments or in multiple times, and / or the second information is sent in segments or in multiple times. That is, the first information is sent in multiple segments or multiple times, and / or the second information is sent in multiple segments or multiple times.

[0091] In some embodiments, the first information is sent repeatedly, and / or the second information is sent repeatedly, that is, the same first information is sent multiple times, and / or the same second information is sent multiple times.

[0092] In the above embodiment, the information stored in the first device matches the first information or part of the first information, and the first device sends the second information by backscattering the first waveform.

[0093] In some other embodiments, a third device receives the first information from the second device, and the third device determines not to send the second information based on the first information. For example, the third device is the third device 103 in FIG1 .

[0094] For example, if the information stored by the third device does not match the first information received from the second device, the third device does not send the second information.

[0095] For example, the first layer of the third device receives the first information from the second device; the first layer of the third device delivers the received first information to the second layer of the third device; the second layer determines not to send the second information based on the first information.

[0096] For example, the third device is another terminal device, such as another AIoT device.

[0097] In some other embodiments, the fourth device receives the first information from the second device but does not receive the first waveform of the first frequency, and the fourth device determines not to send the second information. For example, the fourth device is the fourth device 104 in FIG1 .

[0098] For example, the first layer of the fourth device receives the first information from the second device; the first layer of the fourth device delivers the received first information to the second layer of the fourth device; and the second layer determines not to send the second information.

[0099] For example, the fourth device is another terminal device, for example, another AIoT device.

[0100] Figure 4 is an interaction diagram of an implementation method of an access method of an embodiment of the present application. As shown in Figure 4, the second device sends a first waveform, and the first device and the third device receive the first information from the second device. The first device sends at least the second information used to respond to the first information to the second device by backscattering the first waveform (second waveform), and the third device does not send the second information. For example, the first layer of the first device delivers the received first information or the payload of the first information to the second layer of the first device; the second layer determines to send the second information based on the first information or the payload of the first information; the first layer of the first device backscatters the first waveform to generate a second waveform; the second layer of the first device generates other information in the second information other than the second waveform, and delivers the other information to the first layer of the first device. The first layer of the first device sends the second information by backscattering the first waveform.

[0101] For example, the first information is carried through a first channel, and / or the second information is carried or sent through a second channel;

[0102] For example, the first channel is one of PDSCH, PDCCH and an IoT-specific channel, and / or the second channel is one of PUSCH and an IoT-specific channel.

[0103] In some embodiments, the method further includes: the first device receiving third information from the second device, the third information being at least used by the first device to perform an operation according to the third information.

[0104] FIG5 is another schematic diagram of an access method according to an embodiment of the present application. As shown in FIG5 , the method includes:

[0105] 501: A first device receives first information from a second device, where the first information is carried via a first channel.

[0106] 502: The first device sends second information at least according to the first information by backscattering the first waveform, where the second information is at least used to respond to the first information;

[0107] 503: The first device receives third information from the second device, where the third information is at least used for the first device to perform an operation according to the third information. For example, the second layer of the first device determines that the first device performs an operation according to the third information.

[0108] For example, the second information is carried or sent via a second channel;

[0109] For example, the third information is carried via the first channel;

[0110] For example, the first channel is one of PDSCH, PDCCH and an IoT-specific channel, and / or the second channel is one of PUSCH and an IoT-specific channel.

[0111] In some embodiments, the third information includes a first resource, and the method further includes: the first device sending fourth information on the first resource.

[0112] For example, the first resource is an uplink resource, such as a UL grant resource. In another example, the first resource is a resource allocated to the first device.

[0113] For example, the fourth information includes at least one of the first identifier, the second identifier, and an N-bit random number. For example, when the second information does not include the first identifier and / or the second identifier, the first identifier and / or the second identifier are carried in the fourth information.

[0114] FIG6 is another schematic diagram of an access method according to an embodiment of the present application. As shown in FIG6 , the method includes:

[0115] 601: A first device receives first information from a second device, where the first information is carried via a first channel.

[0116] 602: The first device sends second information at least according to the first information and by backscattering the first waveform, where the second information is at least used to respond to the first information;

[0117] 603: The first device receives third information from the second device, where the third information includes the first resource.

[0118] 604: The first device sends fourth information on the first resource.

[0119] For example, the first layer of the first device receives the third information; the first layer of the first device delivers the received third information or the payload of the third information to the second layer of the first device; the second layer of the first device generates fourth information; the second layer of the first device delivers the generated fourth information to the first layer of the first device, and the first layer of the first device sends the fourth information on the first resource.

[0120] In addition, in some embodiments, the first device may send a fourth message on a resource related to the first resource.

[0121] In addition, in some embodiments, the first device may repeatedly send the fourth information, that is, send the fourth information multiple times on the first resource or resources related to the first resource.

[0122] For example, the second information and / or the fourth information is carried or sent via the second channel;

[0123] For example, the third information is carried via the first channel;

[0124] For example, the first channel is one of PDSCH, PDCCH and an IoT-specific channel, and / or the second channel is one of PUSCH and an IoT-specific channel.

[0125] Figure 7 is an interaction diagram of another implementation of the access method of an embodiment of the present application. As shown in Figure 7, the second device sends a first waveform, and the first device and the third device receive the first information from the second device. The first device sends at least the second information for responding to the first information by backscattering the first waveform (second waveform), and the third device does not send the second information; and after receiving the second information, the second device sends a first resource to the first device, and the first device sends the fourth information on the first resource. For example, the first layer of the first device delivers the received first information or the payload of the first information to the second layer of the first device; the second layer determines to send the second information based on the first information or the payload of the first information; the first layer of the first device backscatters the first waveform to generate a second waveform; the second layer of the first device generates other information in the second information other than the second waveform, and delivers the other information to the first layer of the first device. The first layer of the first device sends the second information by backscattering the first waveform; the first layer of the first device receives the third information; the first layer of the first device delivers the received third information or the payload of the third information to the second layer of the first device; the second layer of the first device generates the fourth information; the second layer of the first device delivers the generated fourth information to the first layer of the first device, and the first layer of the first device sends the fourth information on the first resource.

[0126] For example, the first information and / or the third information is carried through a first channel, and / or the second information and / or the fourth information is carried or sent through a second channel;

[0127] For example, the first channel is one of PDSCH, PDCCH and an IoT-specific channel, and / or the second channel is one of PUSCH and an IoT-specific channel.

[0128] In some embodiments, the third information includes a second resource, and the method further includes: the first device receiving fifth information on the second resource.

[0129] For example, the second resource is a downlink resource, such as a DL assignment resource. In another example, the second resource is a resource used for transmission by the second device.

[0130] For example, the fifth information includes a first command, and the first command is at least used for the first device to perform an operation according to the first command, such as at least one of state transition, start timing, start counting, and the like.

[0131] FIG8 is another schematic diagram of an access method according to an embodiment of the present application. As shown in FIG8 , the method includes:

[0132] 801: A first device receives first information from a second device, where the first information is carried via a first channel.

[0133] 802: The first device sends second information at least based on the first information and by backscattering the first waveform, where the second information is at least used to respond to the first information.

[0134] 803: The first device receives third information from the second device, where the third information includes a second resource.

[0135] 804: The first device receives fifth information on the second resource, where the fifth information includes a first command.

[0136] 805: The first device performs an operation according to the first command.

[0137] Operation 805 is an optional operation and is indicated by a dotted box in FIG8 .

[0138] For example, the first layer of the first device receives third information including a second resource; the first layer of the first device receives fifth information including a first command on the second resource, and delivers the first command to the second layer of the first device, and the second layer determines to perform the above operation;

[0139] For example, the first information and / or the third information and / or the fifth information is carried through a first channel, and / or the second information and / or the fourth information is carried or sent through a second channel;

[0140] For example, the first channel is one of PDSCH, PDCCH and an IoT-specific channel, and / or the second channel is one of PUSCH and an IoT-specific channel.

[0141] Figure 9 is an interaction diagram of another embodiment of the access method of the embodiment of the present application. As shown in Figure 9, the second device sends a first waveform, and the first device and the third device receive the first information from the second device. The first device sends at least the second information for responding to the first information by backscattering the first waveform (second waveform), and the third device does not send the second information; and after receiving the second information, the second device sends a second resource to the first device, and the first device receives the first command on the second resource. For example, the first layer of the first device delivers the received first information or the payload of the first information to the second layer of the first device; the second layer determines to send the second information based on the first information or the payload of the first information; the first layer of the first device backscatters the first waveform to generate a second waveform; the second layer of the first device generates other information in the second information other than the second waveform, and delivers the other information to the first layer of the first device. The first layer of the first device sends second information by backscattering the first waveform; the first layer of the first device receives third information including a second resource; the first layer of the first device receives fifth information including a first command on the second resource, and submits the first command to the second layer of the first device, and the second layer determines to perform the above operations.

[0142] For example, the first information and / or the third information and / or the fifth information is carried through a first channel, and / or the second information and / or the fourth information is carried or sent through a second channel;

[0143] For example, the first channel is one of PDSCH, PDCCH and an IoT-specific channel, and / or the second channel is one of PUSCH and an IoT-specific channel.

[0144] In some embodiments, under certain circumstances, the first device considers the first process to be completed or uncompleted. The first process is completed, including successful completion and unsuccessful completion.

[0145] For example, when the information stored in the first device does not match the first information, the first device does not send the second information. When the first device receives the first information, the first device considers that the first process is completed, ie, it is not successfully completed.

[0146] For example, if the first device sends the second information by backscattering the first waveform one or more times, the first process is considered to be completed, for example, unsuccessfully completed.

[0147] For example, when the first device sends the second information one or more times by backscattering the first waveform and a certain time (eg, T) has passed, it is considered that the first process is completed, eg, unsuccessfully completed.

[0148] For example, if the third information received by the first device includes the first identifier included in the second information, it is considered that the first process is completed, for example, successfully completed.

[0149] For example, if the first device performs the above operation according to the third information, it is considered that the first process is completed, for example, successfully completed.

[0150] In some embodiments, the first procedure is an initial access procedure.

[0151] In some embodiments, the "initial access process" may also be referred to as one of an initial registration process, an initial authentication process, an initial interaction process, and an inventory process.

[0152] In some embodiments, after the first process is completed, the method further includes: the first device generating a T-bit random number and starting timing and / or counting.

[0153] In some embodiments, the first information and / or the third information is used for at least one of the following:

[0154] selecting one or more first devices;

[0155] used to indicate access and / or interaction of one or more first devices;

[0156] for indicating registration and / or authentication and / or identification of one or more first devices;

[0157] taking inventory of the one or more first devices;

[0158] In some embodiments, the second information and / or the fourth information is used for at least one of the following:

[0159] Indication is the first device selected;

[0160] Accessing and / or interacting with a first device;

[0161] Performing registration and / or authentication and / or identification of the first device;

[0162] Conduct an inventory.

[0163] In some embodiments, the first information and / or the third information is borne or carried via the first channel;

[0164] The second information and / or the fourth information is borne or carried through the second channel.

[0165] In some embodiments, the first channel is one of a PDSCH, a PDCCH, and an IoT-specific channel, and / or the second channel is one of a PUSCH and an IoT-specific channel.

[0166] In some embodiments, the first identifier includes at least one of the following:

[0167] M-bit random number;

[0168] The M-bit random number after the N-bit random number is operated;

[0169] M bits of information generated based on the first resource;

[0170] M bits of information generated based on one of the first information, the second information, and the third information;

[0171] The third information includes M bits of information allocated by the second device.

[0172] In some embodiments, M is one of 8, 16, 24, and N is one of 8, 16, 24.

[0173] In addition, M and N may be the same or different.

[0174] In some embodiments, the second identifier includes at least one of identity information, attribute information, and classification information stored in the first device.

[0175] The above embodiments are merely exemplary of the present invention, but the present invention is not limited thereto. Appropriate modifications may be made based on the above embodiments. For example, the above embodiments may be used alone, or one or more of the above embodiments may be combined.

[0176] As can be seen from the above embodiments, the initial access can be completed without requiring the first device to support the device-initiated (DO-DTT) service type, thereby reducing device costs.

[0177] Embodiments of the second aspect

[0178] The present application provides an access method, which is applied to a second device, such as the second device 102 in Figure 1, the network device in Figure 2 (a), or the intermediate node in Figure 2 (b). The second aspect of the embodiment can be combined with the first aspect of the embodiment, and the content that is the same as the first aspect of the embodiment is not repeated here.

[0179] FIG10 is a schematic diagram of an access method according to an embodiment of the present application. As shown in FIG10 , the method includes:

[0180] 1001: A second device sends first information, where the first information is carried or sent through a first channel;

[0181] 1002: The second device receives second information from the first device, where the second information is at least used to respond to the first information.

[0182] It is worth noting that FIG10 above is merely a schematic illustration of an embodiment of the present application, and the present application is not limited thereto. For example, the execution order of the various operations may be appropriately adjusted, and other operations may be added or some operations may be reduced. Those skilled in the art may make appropriate modifications based on the above description, and are not limited to the description of FIG10 above.

[0183] In some embodiments, the first information includes at least one of frequency information, grouping information, counting information, and timing information, and / or,

[0184] The second information includes at least one of a second waveform obtained by backscattering the first waveform, frequency information, grouping information, an N-bit random number, a first identifier (ID), and a second identifier (ID).

[0185] In some embodiments, the second device sends downlink information through the first channel; and / or the second device receives uplink information through the second channel.

[0186] In some embodiments, the first channel is one of a PDSCH, a PDCCH, and an IoT-specific channel.

[0187] In some embodiments, the second information includes at least one of frequency information, grouping information, an N-bit random number, a first identifier (ID), and a second identifier (ID), and the second information is carried or received via the second channel. In other words, the carried information is received via the second channel.

[0188] In some embodiments, the second channel is one of a PUSCH and an IoT-specific channel.

[0189] In some embodiments, the first information is sent in segments or in batches, and / or the second information is sent in segments or in batches.

[0190] In some embodiments, the first information is sent repeatedly, and / or the second information is sent repeatedly.

[0191] In some embodiments, the method further includes: the second device sending third information to the first device, where the third information is at least used for the first device to perform an operation according to the third information.

[0192] In some embodiments, the third information includes a first resource, and the method further includes: the second device receiving fourth information from the first device, where the fourth information is sent on the first resource.

[0193] In some embodiments, the fourth information includes at least one of a first identifier, a second identifier, and an N-bit random number.

[0194] In some embodiments, the third information includes a second resource, and the method further includes: the second device sending fifth information to the first device, and the second resource is used by the second device to send the fifth information.

[0195] In some embodiments, the fifth information includes a first command, and the first command is at least used for the first device to perform an operation according to the first command.

[0196] In some embodiments, the third information includes a first identifier, and the first identifier is used by the first device to consider that the first process is completed.

[0197] In some embodiments, the first procedure is an initial access procedure.

[0198] In some embodiments, the first identifier includes at least one of the following:

[0199] M-bit random number;

[0200] The M-bit random number after the N-bit random number is operated;

[0201] M bits of information generated based on the first resource;

[0202] M bits of information generated based on one of the first information, the second information, and the third information;

[0203] The third information includes M bits of information allocated by the second device.

[0204] In some embodiments, the second identifier includes at least one of identity information, attribute information, and classification information stored in the first device.

[0205] The above embodiments are merely exemplary of the present invention, but the present invention is not limited thereto. Appropriate modifications may be made based on the above embodiments. For example, the above embodiments may be used alone, or one or more of the above embodiments may be combined.

[0206] As can be seen from the above embodiments, the initial access can be completed without requiring the first device to support the device-initiated (DO-DTT) service type, thereby reducing device costs.

[0207] Embodiments of the third aspect

[0208] The present application provides an access device, which corresponds to the method described in the embodiment of the first aspect. The device can be, for example, a first device, or one or more components or assemblies configured on the first device. The same contents as those in the embodiment of the first aspect are not repeated here.

[0209] FIG11 is a schematic diagram of an access device according to an embodiment of the present application. As shown in FIG11 , the access device 1100 according to an embodiment of the present application includes:

[0210] A first receiving unit 1101 receives first information from a second device, where the first information is carried via a first channel;

[0211] The first sending unit 1102 sends second information at least according to the first information and by backscattering the first waveform, where the second information is at least used to respond to the first information.

[0212] In some embodiments, the first information includes at least one of frequency information, grouping information, counting information, and timing information, and / or,

[0213] The second information includes at least one of a second waveform obtained by backscattering the first waveform, frequency information, grouping information, an N-bit random number, a first identifier (ID), and a second identifier (ID).

[0214] In some embodiments, the first information is sent in segments or in batches, and / or the second information is sent in segments or in batches.

[0215] In some embodiments, the first information is sent repeatedly, and / or the second information is sent repeatedly.

[0216] In some embodiments, when the information stored in the first device matches the first information or a portion of the first information, the first sending unit 1102 sends the second information by backscattering the first waveform.

[0217] In some embodiments, the first receiving unit 1101 further receives third information from the second device.

[0218] The third information is at least used by the first device to perform an operation according to the third information.

[0219] In some embodiments, the third information includes the first resource,

[0220] The first sending unit 1102 further sends fourth information on the first resource.

[0221] In some embodiments, the fourth information includes at least one of a first identifier, a second identifier, and an N-bit random number.

[0222] In some embodiments, the third information includes a second resource,

[0223] The first receiving unit 1101 further receives fifth information on the second resource.

[0224] In some embodiments, the fifth information includes a first command,

[0225] The first command is at least used for the first device to perform an operation according to the first command.

[0226] In some embodiments, the third information includes a first identifier,

[0227] The first device considers the first process complete.

[0228] In some embodiments, the first procedure is an initial access procedure.

[0229] In some embodiments, the apparatus 1100 further includes:

[0230] The timing and / or counting unit 1103 generates a T-bit random number and starts timing and / or counting.

[0231] The timing and / or counting unit 1103 is an optional component and is represented by a dotted box in FIG11 .

[0232] In some embodiments, the first identifier includes at least one of the following:

[0233] M-bit random number;

[0234] The M-bit random number after the N-bit random number is operated;

[0235] M bits of information generated based on the first resource;

[0236] M bits of information generated based on one of the first information, the second information, and the third information;

[0237] The third information includes M bits of information allocated by the second device.

[0238] In some embodiments, the second identifier includes at least one of identity information, attribute information, and classification information stored in the first device.

[0239] It is worth noting that the above only describes the components or modules related to the present application, but the present application is not limited thereto. The access device 1100 may also include other components or modules. For the specific contents of these components or modules, reference may be made to the relevant art.

[0240] In addition, for the sake of simplicity, FIG11 only illustrates the connection relationship or signal direction between various components or modules. However, it should be clear to those skilled in the art that various related technologies such as bus connection can be used. The above-mentioned components or modules can be implemented by hardware facilities such as processors, memories, transmitters, and receivers; the implementation of this application is not limited to this.

[0241] As can be seen from the above embodiments, the initial access can be completed without requiring the first device to support the device-initiated (DO-DTT) service type, thereby reducing device costs.

[0242] Embodiments of the fourth aspect

[0243] The embodiment of the present application provides an access device, which may be, for example, a second device, or one or more components or assemblies configured on the second device, and the contents identical to those in the first to third aspects of the embodiment will not be repeated.

[0244] FIG12 is another schematic diagram of an access device according to an embodiment of the present application. As shown in FIG12 , the access device 1200 includes:

[0245] A second sending unit 1201 is configured to send first information, where the first information is carried or sent via a first channel;

[0246] The second receiving unit 1202 receives second information from the first device, where the second information is at least used to respond to the first information.

[0247] In some embodiments, the first information includes at least one of frequency information, grouping information, counting information, and timing information, and / or,

[0248] The second information includes at least one of a second waveform obtained by backscattering the first waveform, frequency information, grouping information, an N-bit random number, a first identifier (ID), and a second identifier (ID).

[0249] In some embodiments, the first channel is one of a PDSCH, a PDCCH, and an IoT-specific channel.

[0250] In some embodiments, the second sending unit 1201 further sends third information to the first device.

[0251] The third information is at least used by the first device to perform an operation according to the third information.

[0252] In some embodiments, the third information includes the first resource,

[0253] The second receiving unit 1202 further receives fourth information from the first device, where the fourth information is sent on the first resource.

[0254] In some embodiments, the third information includes a second resource,

[0255] The second sending unit 1201 further sends fifth information to the first device, and the second resource is used by the second device to send the fifth information.

[0256] The above embodiments are merely exemplary of the present invention, but the present invention is not limited thereto. Appropriate modifications may be made based on the above embodiments. For example, the above embodiments may be used alone, or one or more of the above embodiments may be combined.

[0257] It is worth noting that the above only describes the components or modules related to the present application, but the present application is not limited thereto. The access device 1200 may also include other components or modules. For the specific contents of these components or modules, reference may be made to the relevant art.

[0258] In addition, for the sake of simplicity, FIG12 only illustrates the connection relationship or signal direction between various components or modules. However, it should be clear to those skilled in the art that various related technologies such as bus connection can be used. The above-mentioned components or modules can be implemented by hardware facilities such as processors, memories, transmitters, and receivers; the implementation of this application is not limited to this.

[0259] As can be seen from the above embodiments, the initial access can be completed without requiring the first device to support the device-initiated (DO-DTT) service type, thereby reducing device costs.

[0260] Embodiments of the fifth aspect

[0261] An embodiment of the present application provides a first device, which includes the access device according to the embodiment of the third aspect. The first device is, for example, the first device 101 in Figure 1 or the AIoT device in Figure 2.

[0262] Figure 13 is a schematic block diagram of the system architecture of a first device according to an embodiment of the present invention. As shown in Figure 13 , first device 1300 may include a processor 1310 and a memory 1320; memory 1320 is coupled to processor 1310. It should be noted that this diagram is exemplary; other types of structures may be used to supplement or replace this structure to implement telecommunication or other functions.

[0263] In one embodiment, the functionality of the access device may be integrated into the processor 1310 .

[0264] The processor 1310 is configured as follows: the first device receives first information from the second device, and the first information is carried through a first channel; the first device sends second information based on at least the first information and by backscattering a first waveform, and the second information is at least used to respond to the first information.

[0265] In another embodiment, the access device may be configured separately from the processor 1310 . For example, the access device may be configured as a chip connected to the processor 1310 , and the functions of the access device may be implemented under the control of the processor 1310 .

[0266] As shown in Figure 13 , the first device 1300 may further include a communication module 1330. It should be noted that the first device 1300 does not necessarily include all the components shown in Figure 13 ; in addition, the first device 1300 may also include components not shown in Figure 13 , and reference may be made to related art for details.

[0267] As shown in FIG. 13 , the processor 1310 is sometimes also referred to as a controller or an operation control, and may include a microprocessor or other processor device and / or logic device. The processor 1310 receives inputs and controls the operations of various components of the first device 1300 .

[0268] In some embodiments, processor 1310 may include a random number generator and a comparator.

[0269] The memory 1320 may be, for example, one or more of a cache, a flash memory, a hard drive, a removable medium, a volatile memory, a non-volatile memory, or other suitable devices. It may store various data and may also store programs for executing related information. The processor 1310 may execute the programs stored in the memory 1320 to implement information storage or processing, etc. The functions of other components are similar to those of the prior art and will not be described in detail here. The various components of the first device 1300 may be implemented using dedicated hardware, firmware, software, or a combination thereof without departing from the scope of the present invention.

[0270] As can be seen from the above embodiments, the initial access can be completed without requiring the first device to support the device-initiated (DO-DTT) service type, thereby reducing device costs.

[0271] Embodiments of the sixth aspect

[0272] The embodiment of the present application provides a second device, which includes the access apparatus according to the embodiment of the fourth aspect. The second device is, for example, the second device 102 in Figure 1, the network device in Figure (a), or the intermediate node in Figure 2 (b).

[0273] Figure 14 is a schematic block diagram of the system configuration of a second device according to an embodiment of the present application. As shown in Figure 14, second device 1400 may include a processor 1410 and a memory 1420; memory 1420 is coupled to processor 1410. Memory 1420 can store various data and also stores an information processing program 1430. This program 1430 is executed under the control of processor 1410 to receive various information sent by the first device and to send various information to the first device.

[0274] In one embodiment, the functionality of the access device may be integrated into the processor 1410 .

[0275] The processor 1410 may be configured as follows: the second device sends first information, where the first information is carried or sent through a first channel; and the second device receives second information from the first device, where the second information is at least used to respond to the first information.

[0276] In another embodiment, the access device may be configured separately from the processor 1410 . For example, the access device may be configured as a chip connected to the processor 1410 , and the functions of the access device may be implemented under the control of the processor 1410 .

[0277] Furthermore, as shown in FIG14 , the second device 1400 may further include a transceiver 1440 and an antenna 1450, among others. The functions of these components are similar to those in the prior art and are not further described here. It is worth noting that the second device 1400 does not necessarily include all of the components shown in FIG14 . Furthermore, the second device 1400 may also include components not shown in FIG14 , for which reference may be made to the prior art.

[0278] As can be seen from the above embodiments, the initial access can be completed without requiring the first device to support the device-initiated (DO-DTT) service type, thereby reducing device costs.

[0279] Embodiments of the seventh aspect

[0280] The embodiment of the present application provides a communication system, including the first device according to the embodiment of the fifth aspect and / or the second device according to the embodiment of the sixth aspect. For specific details, please refer to the description of the embodiment of the fifth aspect and the embodiment of the sixth aspect.

[0281] For example, the structure of the communication system can be referred to FIG1 and FIG2 ,

[0282] As shown in Figure 1, the communication system 100 includes a first device 101 and a second device 102. The first device 101 can be the same as the first device 101 described in the embodiment of the fifth aspect, and / or the second device 102 can be the same as the second device described in the embodiment of the sixth aspect. The repeated content will not be repeated.

[0283] As shown in (a) in Figure 2, the communication system includes a network device and an AIoT device. The AIoT device may be the same as the first device described in the embodiment of the fifth aspect, and / or the network device may be the same as the second device described in the embodiment of the sixth aspect. The repeated content will not be repeated.

[0284] As shown in (b) in Figure 2, the communication system includes a network device, an intermediate node and an AIoT device. The AIoT device can be the same as the first device described in the embodiment of the fifth aspect, and / or the intermediate node can be the same as the second device described in the embodiment of the sixth aspect. The repeated content will not be repeated.

[0285] The above devices and methods of the present application can be implemented by hardware or by a combination of hardware and software. The present application relates to such a computer-readable program that, when executed by a logic component, enables the logic component to implement the devices or components described above, or enables the logic component to implement the various methods or steps described above. The present application also relates to a storage medium for storing the above program, such as a hard disk, a magnetic disk, an optical disk, a DVD, a flash memory, etc.

[0286] The method / device described in conjunction with the embodiments of the present application can be directly embodied as hardware, a software module executed by a processor, or a combination of the two. For example, one or more of the functional block diagrams shown in Figure 11 and / or one or more combinations of functional block diagrams can correspond to various software modules of a computer program flow or to various hardware modules. These software modules can correspond to the various steps shown in Figure 3, respectively. These hardware modules can be implemented by solidifying these software modules, for example, using a field programmable gate array (FPGA).

[0287] The software module may be located in RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, a hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art. A storage medium may be coupled to a processor so that the processor can read information from the storage medium and write information to the storage medium; or the storage medium may be an integral part of the processor. The processor and the storage medium may be located in an ASIC. The software module may be stored in the memory of the mobile terminal or in a memory card that can be inserted into the mobile terminal. For example, if the device (such as a mobile terminal) uses a large-capacity MEGA-SIM card or a large-capacity flash memory device, the software module may be stored in the MEGA-SIM card or the large-capacity flash memory device.

[0288] One or more of the functional blocks and / or one or more combinations of functional blocks described in FIG11 may be implemented as a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA) or other programmable logic device, a discrete gate or transistor logic device, a discrete hardware component, or any suitable combination thereof for performing the functions described in this application. One or more of the functional blocks and / or one or more combinations of functional blocks described in FIG11 may also be implemented as a combination of computing devices, such as a combination of a DSP and a microprocessor, multiple microprocessors, one or more microprocessors in communication with a DSP, or any other such configuration.

[0289] The present application has been described above in conjunction with specific embodiments. However, those skilled in the art should understand that these descriptions are merely illustrative and are not intended to limit the scope of protection of the present application. Those skilled in the art may make various modifications and variations to the present application based on the spirit and principles of the present application, and such modifications and variations are also within the scope of the present application.

[0290] Regarding the implementation methods including the above embodiments, the following additional notes are also disclosed:

[0291] 1. An access method, comprising:

[0292] The first device receives first information from the second device, where the first information is carried through a first channel;

[0293] The first device sends second information based on at least the first information by backscattering the first waveform, where the second information is at least used to respond to the first information.

[0294] 2. The method according to Supplement 1, wherein the method further comprises:

[0295] The first layer of the first device delivers the received first information or the payload of the first information to the second layer of the first device;

[0296] The second layer determines to send the second information according to the first information or a payload of the first information.

[0297] 3. The method according to Supplementary Note 2, wherein the method further comprises:

[0298] The first layer of the first device backscatters the first waveform to generate a second waveform;

[0299] The second layer of the first device generates other information in the second information except the second waveform, and delivers the other information to the first layer of the first device.

[0300] 4. The method according to Note 1, wherein the method further comprises: the first device receiving third information from the second device, the third information being at least used by the first device to perform an operation according to the third information,

[0301] The first device receiving third information from the second device includes: the first layer of the first device receiving the third information;

[0302] The method further includes: the first layer of the first device delivering the received third information or the payload of the third information to the second layer of the first device.

[0303] 5. The method according to claim 4, wherein

[0304] The third information includes the first resource,

[0305] The method further includes: the first device sending fourth information on the first resource,

[0306] The method further comprises:

[0307] The second layer of the first device generates the fourth information;

[0308] The second layer of the first device delivers the generated fourth information to the first layer of the first device.

[0309] 6. The method according to Note 4 or 5, wherein the method further comprises:

[0310] The second layer of the first device determines that the first device performs the operation according to the third information.

[0311] 7. The method according to Supplementary Note 1, wherein the method further comprises:

[0312] The first layer of the third device receives the first information from the second device;

[0313] The first layer of the third device delivers the received first information to the second layer of the third device;

[0314] The second layer determines not to send the second information based on the first information.

[0315] 8. The method according to any one of Notes 1 to 7, wherein:

[0316] The first layer is a physical layer, and / or the second layer is an AIoT adaptation layer.

[0317] 9. An access method, comprising:

[0318] The second device sends downlink information through the first channel, where the downlink information includes the first information;

[0319] The second device receives uplink information through a second channel, where the uplink information includes second information, and the second information is at least used to respond to the first information.

[0320] 10. The method according to Supplementary Note 9, wherein:

[0321] The first channel is one of PDSCH, PDCCH and IoT-specific channel, and / or,

[0322] The second information includes at least one of frequency information, grouping information, an N-bit random number, a first identifier (ID), and a second identifier (ID), and the second channel is one of a PUSCH and an IoT-specific channel.

Claims

1. An access device, the device being provided in a first device, the device comprising: a first receiving unit, configured to receive first information from a second device, wherein the first information is carried via a first channel; The first sending unit sends second information at least according to the first information and by backscattering a first waveform, where the second information is at least used to respond to the first information.

2. The device according to claim 1, wherein The first information includes at least one of frequency information, grouping information, counting information and timing information, and / or, The second information includes at least one of a second waveform obtained by backscattering the first waveform, frequency information, grouping information, an N-bit random number, a first identifier (ID), and a second identifier (ID).

3. The device according to claim 1 or 2, wherein: The first information is sent in segments or in batches, and / or the second information is sent in segments or in batches.

4. The device according to claim 1 or 2, wherein: The first information is sent repeatedly, and / or the second information is sent repeatedly.

5. The device according to claim 1, wherein When the information stored in the first device matches the first information or part of the first information, the first sending unit sends the second information by backscattering the first waveform.

6. The device according to claim 1, wherein The first receiving unit further receives third information from the second device, The third information is at least used by the first device to perform an operation according to the third information.

7. The device according to claim 6, wherein The third information includes the first resource, The first sending unit further sends fourth information on the first resource.

8. The device according to claim 7, wherein The fourth information includes at least one of a first identifier, a second identifier (ID), and an N-bit random number.

9. The device according to claim 6, wherein The third information includes a second resource, The first receiving unit further receives fifth information on the second resource.

10. The device according to claim 9, wherein The fifth information includes a first command, The first command is at least used for the first device to perform an operation according to the first command.

11. The device according to claim 6, wherein The third information includes a first identifier, The first device considers the first process completed.

12. The device according to claim 11, wherein The first process is an initial access process.

13. The device according to claim 11 or 12, wherein: The device further comprises: A timing and / or counting unit generates a T-bit random number and starts timing and / or counting.

14. The device according to any one of claims 2, 6-8, and 11, wherein: The first identifier includes at least one of the following: M-bit random number; The M-bit random number after the N-bit random number is operated; M bits of information generated based on the first resource; M bits of information generated based on one of the first information, the second information, and the third information; The third information includes M bits of information allocated by the second device, And / or, the second identifier includes at least one of identity information, attribute information, and classification information stored in the first device.

15. The device according to claim 1, wherein The first device has a first layer and a second layer, and the first layer of the first device receives the first information.

16. An access device, the device being provided in a second device, the device comprising: a second sending unit configured to send first information, wherein the first information is carried or sent via a first channel; The second receiving unit receives second information from the first device, where the second information is at least used to respond to the first information.

17. The device according to claim 16, wherein The first information includes at least one of frequency information, grouping information, counting information and timing information, and / or, The second information includes at least one of a second waveform obtained by backscattering the first waveform, frequency information, grouping information, an N-bit random number, a first identifier (ID), and a second identifier (ID).

18. The device according to claim 16 or 17, wherein The first channel is one of PDSCH, PDCCH and IoT-specific channel.

19. The device according to claim 16, wherein The second sending unit further sends third information to the first device. The third information is at least used by the first device to perform an operation according to the third information.

20. The device according to claim 19, wherein The third information includes the first resource, The second receiving unit further receives fourth information from the first device, where the fourth information is sent on the first resource, or, The third information includes a second resource, The second sending unit further sends fifth information to the first device, and the second resource is used by the second device to send the fifth information.

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