Wireless communication method and communication equipment

Abstract

The invention provides a wireless communication method and communication equipment. The method comprises: a first device monitoring a first reader-to-device R2D transmission, the first R2D transmission being used to determine a first transmission resource, the first transmission resource being used to transmit a random access message. Based on the first R2D transmission, the first device can determine the transmission resource of the random access message, so that the first device can actively send the random access message, and the communication efficiency can be improved.

Description

Technical Field

[0001] This application relates to the field of communication technology, and more specifically, to a method and device for wireless communication. Background Technology

[0002] In some scenarios, the first device (e.g., an ambient internet of things (A-IoT) device) needs to actively initiate random access. However, how to actively send random access messages is a problem that urgently needs to be solved. Summary of the Invention

[0003] This application provides a method and apparatus for wireless communication. The various aspects covered in this application are described below.

[0004] In a first aspect, a wireless communication method is provided, comprising: a first device listening to a first reader-to-device R2D transmission, the first R2D transmission being used to determine a first transmission resource, the first transmission resource being used to transmit a random access message.

[0005] In a second aspect, a wireless communication method is provided, comprising: a second device sending a first reader-to-device R2D transmission, the first R2D transmission being used to determine a first transmission resource, the first transmission resource being used to transmit a random access message.

[0006] Thirdly, a communication device is provided, the communication device being a first device, the communication device comprising: a listening unit for listening to a first reader-to-device R2D transmission, the first R2D transmission being used to determine a first transmission resource, the first transmission resource being used to transmit a random access message.

[0007] The fourth unit provides a communication device, which is a second device. The communication device includes: a sending unit, used to send a first reader to device R2D transmission, the first R2D transmission being used to determine a first transmission resource, the first transmission resource being used to transmit random access messages.

[0008] Fifthly, a communication device is provided, including a processor, a memory, and a transceiver, wherein the memory is used to store one or more computer programs, and the processor is used to invoke the computer programs in the memory to cause the communication device to perform some or all of the steps in the method of the first aspect.

[0009] In a sixth aspect, a communication device is provided, including a processor, a memory, and a transceiver, wherein the memory is used to store one or more computer programs, and the processor is used to invoke the computer programs in the memory to cause the communication device to perform some or all of the steps in the method of the second aspect.

[0010] Seventhly, embodiments of this application provide a communication system including the aforementioned communication device. In another possible design, the system may further include other devices that interact with the communication device as described in the embodiments of this application.

[0011] Eighthly, embodiments of this application provide a computer-readable storage medium storing a computer program that causes a communication device to perform some or all of the steps in the methods described above.

[0012] Ninthly, embodiments of this application provide a computer program product, wherein the computer program product includes a non-transitory computer-readable storage medium storing a computer program operable to cause a communication device to perform some or all of the steps of the methods described in the foregoing aspects. In some implementations, the computer program product may be a software installation package.

[0013] In a tenth aspect, embodiments of this application provide a chip including a memory and a processor, the processor being able to call and run a computer program from the memory to implement some or all of the steps described in the methods of the foregoing aspects.

[0014] In this application, a first device receives a first R2D transmission for determining a first transmission resource used to transmit a random access message. Based on the first R2D transmission, the first device can determine the transmission resource for the random access message, enabling the first device to actively send the random access message and thus improving communication efficiency. Attached Figure Description

[0015] Figure 1 This is the wireless communication system 100 used in the embodiments of this application.

[0016] Figure 2 This is a schematic diagram of a network architecture applicable to embodiments of this application.

[0017] Figure 3A and Figure 3B This is a schematic diagram of a wireless protocol stack structure applicable to embodiments of this application.

[0018] Figure 4 This is a schematic diagram of a neuron in a neural network to which embodiments of this application can be applied.

[0019] Figure 5 This is a schematic diagram of a neural network that can be applied to embodiments of this application.

[0020] Figure 6 This is a schematic diagram of a convolutional neural network that can be applied to embodiments of this application.

[0021] Figure 7 This is a schematic diagram of the wireless protocol stack structure of the A-IoT communication system provided in the embodiments of this application.

[0022] Figure 8 This is an example diagram of the topology 1 of the A-IoT communication system provided in the embodiments of this application.

[0023] Figure 9 This is an example diagram of topology 2 of the A-IoT communication system provided in the embodiments of this application.

[0024] Figure 10A and Figure 10B This is an example diagram of topology 3 of the A-IoT communication system provided in the embodiments of this application.

[0025] Figure 11 This is an example diagram of topology 4 of the A-IoT communication system provided in the embodiments of this application.

[0026] Figure 12 This is a schematic flowchart of a wireless communication method provided in an embodiment of this application.

[0027] Figure 13 This is a schematic diagram of the structure of the communication device provided in the embodiments of this application.

[0028] Figure 14 This is a schematic diagram of the structure of a communication device provided in another embodiment of this application.

[0029] Figure 15 This is a schematic diagram of an apparatus according to an embodiment of this application. Detailed Implementation

[0030] The technical solutions in this application will now be described with reference to the accompanying drawings.

[0031] Communication system architecture

[0032] Figure 1 This is a system architecture example diagram of a wireless communication system 100 applicable to embodiments of this application. The wireless communication system 100 may include a network device 110 and a terminal device 120. The network device 110 may be a device that communicates with the terminal device 120. The network device 110 may provide communication coverage for a specific geographical area and may communicate with the terminal device 120 located within that coverage area.

[0033] Figure 1 An example is shown of a network device and multiple terminal devices, such as... Figure 1Terminal devices 120a to 120j are included. Optionally, the wireless communication system 100 may include multiple network devices, and each network device may include other numbers of terminal devices within its coverage area; this embodiment does not limit this.

[0034] Optionally, the wireless communication system 100 may also include other network entities such as a network controller and a mobility management entity, which is not limited in this embodiment.

[0035] It should be understood that the technical solutions of the embodiments of this application can be applied to various communication systems, such as: 5th-generation (5G) systems or new radio (NR) systems, long-term evolution (LTE) systems, LTE frequency division duplex (FDD) systems, LTE time division duplex (TDD) systems, advanced long-term evolution (LTE-A) systems, enhanced 5G (5G advanced) systems, etc. The technical solutions provided in this application can also be applied to future communication systems, such as 6th-generation (6G) mobile communication systems, satellite communication systems, etc.

[0036] The terminal device in this application embodiment can also be referred to as user equipment (UE), access terminal, user unit, user station, mobile station, mobile station (MS), mobile terminal (MT), remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent, or user device. The terminal device in this application embodiment can be a device that provides voice and / or data connectivity to a user, and can be used to connect people, objects, and machines, such as a handheld device with wireless connectivity, vehicle-mounted device, etc. The terminal device in the embodiments of this application may be a mobile phone, tablet computer, laptop computer, handheld computer, camera equipment, mobile internet device (MID), wearable device, virtual reality (VR) device, augmented reality (AR) device, wireless terminal in industrial control, wireless terminal in self-driving, wireless terminal in remote medical surgery, wireless terminal in smart grid, wireless terminal in transportation safety, wireless terminal in smart city, wireless terminal in smart home, etc. Optionally, the terminal device may be used to act as a base station. For example, the terminal device may act as a scheduling entity, providing sidelink signals between UEs in vehicle-to-everything (V2X) or device-to-device (D2D) connections. For example, cellular phones and cars communicate with each other using sidelink signals. Cellular phones and smart home devices can communicate without relaying communication signals through base stations.

[0037] The network device in this application embodiment can be a device for communicating with terminal devices. This network device can also be called an access network device or a radio access network device, such as a base station (BS). In this application embodiment, the network device can refer to a radio access network (RAN) node or a next-generation RAN (NG-RAN) node (or device) that connects user equipment to a wireless network. A base station can broadly encompass, or be replaced by, various names including: NodeB, evolved NodeB (eNB), next-generation NodeB (gNB), relay station, transmitting and receiving point (TRP), transmitting point (TP), master station (MeNB), secondary station (SeNB), multi-mode radio (MSR) node, home base station, network controller, access node, wireless node, access point (AP), transmission node, transceiver node, baseband unit (BBU), remote radio unit (RRU), active antenna unit (AAU), remote radio head (RRH), central unit (CU), distributed unit (DU), positioning node, etc. A base station can be a macro base station, micro base station, relay node, donor node, or a combination thereof. A base station can also refer to a communication module, modem, or chip installed within the aforementioned equipment or apparatus. Base stations can also be mobile switching centers, devices that perform base station functions in D2D, V2X, and machine-to-machine (M2M) communications, network-side devices in 6G networks, and devices that perform base station functions in future communication systems. Base stations can support networks using the same or different access technologies. The embodiments of this application do not limit the specific technologies or device forms used in the network equipment.

[0038] Base stations can be fixed or mobile. For example, a helicopter or drone can be configured to act as a mobile base station, and one or more cells can move depending on the location of the mobile base station. In other examples, a helicopter or drone can be configured as a device to communicate with another base station.

[0039] In some deployments, the network device in this application embodiment may refer to a CU or a DU, or the network device may include both a CU and a DU. The gNB may also include an AAU.

[0040] Network devices and terminal devices can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; they can also be deployed on water; and they can also be deployed in the air on airplanes, balloons, and satellites. This application does not limit the scenario in which the network devices and terminal devices are located.

[0041] It should be understood that all or part of the functions of the communication device in this application can also be implemented by software functions running on hardware, or by virtualization functions instantiated on a platform (e.g., a cloud platform).

[0042] Figure 2 A schematic diagram of a network architecture 200 according to an embodiment of this application is illustrated. This network architecture 200 describes the network architecture of a 5G NR / LTE / LTE-A system, which can also be referred to as a 5G system (5GS) / evolved packet system (EPS) network architecture. The network architecture 200 includes at least one of the following: network device 110, terminal device 120, 5G core network (5GC) / evolved packet core (EPC) 210, home subscriber server (HSS) / unified data management (UDM) 220, and Internet service 230. Figure 2 The network devices and terminal devices in the diagram are illustrated using RAN and UE as examples, respectively.

[0043] like Figure 2As shown, network device 110 provides user plane and control plane protocol termination to terminal device 120. Network device 110 is connected to 5GC / EPC 210 via an S1 / NG interface. 5GC / EPC 210 includes a mobility management entity (MME) / authentication management field (AMF) / session management function (SMF) 211, other MMEs / AMFs / SMFs 214, a service gateway (S-GW) / user plane function (UPF) 212, and a packet data network gateway (P-GW) / UPF 213. MME / AMF / SMF 211 is the control node that handles signaling between terminal device 120 and 5GC / EPC 210. Generally, MME / AMF / SMF 211 provides bearer and connection management. All user Internet Protocol (IP) packets are transmitted through the S-GW / UPF212, which is itself connected to the P-GW / UPF213. The P-GW provides UE IP address allocation and other functions. The P-GW / UPF213 is connected to Internet service 230. Internet service 230 includes operator-compliant Internet Protocol services, specifically including the Internet, intranet, IP multimedia subsystem (IMS), and packet-switched streaming services. It is evident that network architecture 200 provides packet-switched services; however, those skilled in the art will readily understand that the various concepts presented herein can be extended to networks providing circuit-switched services or other cellular networks.

[0044] Figure 3A and Figure 3B The following are schematic diagrams of the wireless protocol stack structure of one embodiment of this application. Figure 3A and Figure 3B This introduction uses the 5G wireless protocol stack as an example. The 5G wireless protocol stack is divided into two planes: the user plane (UP) protocol stack and the control plane (CP) protocol stack. The user plane protocol stack contains the protocol suite used for user data transmission, while the control plane protocol stack contains the protocol suite used for control signaling transmission in the 5G system. The specific names of each protocol stack layer are as follows:

[0045] like Figure 3AAs shown, the user plane protocol stack, from top to bottom, includes: the Service Data Adaptation Protocol (SDAP) layer, the Packet Data Convergence Protocol (PDCP) layer, the Radio Link Control (RLC) layer, the Medium Access Control (MAC) layer, and the Physical (PHY) layer.

[0046] like Figure 3B As shown, the control plane protocol stack, from top to bottom, includes: non-access stratum (NAS); radio resource control (RRC) layer, PDCP layer, RLC layer, MAC layer, and PHY layer.

[0047] It should be understood that the different layers in the above protocol stack have different functions, and they work together through inter-layer interaction to achieve communication between terminal devices and network devices. With the development of artificial intelligence technology, AI-assisted computing has permeated the processing implementation methods of the above protocol stack. For example, the scheduling algorithm of the MAC layer and the encoding / decoding algorithm of the PHY layer can apply artificial intelligence algorithms to improve the performance of communication algorithms.

[0048] As an example, Figure 3A and Figure 3B The wireless protocol architecture described herein is applicable to the terminal device described in this application.

[0049] As an example, Figure 3A and Figure 3B The wireless protocol architecture described herein is applicable to the network devices described in this application.

[0050] It should be understood that the interpretation of the terminology in the embodiments of this application may refer to the TS36, TS37 and TS38 series of specifications of the 3rd generation partnership project (3GPP), but may also refer to the specifications of the Institute of Electrical and Electronics Engineers (IEEE).

[0051] Neural Networks

[0052] AI research, exemplified by neural networks, has achieved significant results in many fields and will continue to impact people's lives and work for a long time to come. A neural network can be understood as a computational model composed of multiple interconnected neurons. In a neural network, the connection strength between nodes can be represented as the weighted values ​​corresponding to the input signals, also known as parameters. Each neuron performs a weighted summation of different input signals and outputs the result through a specific activation function. Neurons can achieve nonlinear mappings depending on the activation function.

[0053] by Figure 4 Taking the neuron shown as an example, the input of the neuron can be denoted as A, and each dimension of the input can be denoted as a. j The corresponding weighted value is denoted as w. j Where j takes values ​​of 1, 2, ..., n. The neuron's input can also be configured with a bias term to adjust the output, such as... Figure 4 The constant 1 in the input (corresponding to the weighting value denoted as b) is used. The weighting value, along with the summation units (SUs), enhances or weakens the input. The output of the SU can be input into the activation function f to obtain the output t.

[0054] Common neural networks include convolutional neural networks (CNN), recurrent neural networks (RNN), and deep neural networks (DNN).

[0055] The following text combines Figure 5 This application describes the neural network to which the embodiments are applicable. Figure 5 The neural network shown can be divided into three categories according to the position of different layers: input layer 510, hidden layer 520, and output layer 530. Generally speaking, the first layer is the input layer 510, the last layer is the output layer 530, and the intermediate layers between the first and last layers are hidden layers 520.

[0056] The input layer 510 is used to input data, which may be, for example, a received signal received by a receiver. The hidden layer 520 is used to process the input data, for example, to decompress the received signal. The hidden layer may also be called an intermediate layer. The output layer 530 is used to output the processed output data, for example, to output the decompressed signal.

[0057] See Figure 5A neural network consists of multiple layers, each containing multiple neurons. Neurons between layers can be fully connected or partially connected. For connected neurons, the output of a neuron in one layer can serve as the input to a neuron in the next layer.

[0058] To facilitate understanding, we will use CNN as an example below, combined with... Figure 6 Examples of multiple layers in a neural network are provided. A CNN is a deep neural network with convolutional structures. For example... Figure 6 As shown, the structure of a CNN may include an input layer 610, a convolutional layer 620, a pooling layer 630, a fully connected layer 640, and an output layer 650. The convolutional layer 620, pooling layer 630, and fully connected layer 640 are the intermediate layers of this CNN.

[0059] Each convolutional layer (620) can contain multiple convolution operators, also known as kernels. These operators can be viewed as filters that extract specific information from the input signal. Essentially, a convolution operator is a parameter matrix, which is usually predefined. The parameter values ​​in these matrices need to be obtained through extensive training in practical applications to help the CNN make correct predictions. When a CNN has multiple convolutional layers, the initial convolutional layers tend to extract more general features, which can also be called low-level features. As the CNN depth increases, the features extracted by later convolutional layers become increasingly complex.

[0060] Pooling layers (630) are often introduced periodically after convolutional layers to reduce the number of training parameters and the space required for information extraction. Pooling layers can be introduced in various ways; for example, they can be... Figure 6 The convolutional layer shown is followed by a pooling layer, or it can be followed by one or more pooling layers after multiple convolutional layers.

[0061] A fully connected layer 640 is used to generate the final output information. Since the convolutional layer 620 and pooling layer 630 are only responsible for extracting features and reducing parameters introduced by the input data, their processing is insufficient to generate the required output information; therefore, a fully connected layer 640 is introduced. Typically, the fully connected layer 640 may also include multiple hidden layers, the parameters of which can be pre-trained using training data relevant to the specific task type. For example, this task type may include decoding data signals received by a receiver. Another example is channel estimation based on pilot signals received by the receiver.

[0062] Following the multiple hidden layers in the fully connected layer 640, the final layer of the entire CNN, the output layer 650, is used to output the result. Typically, the output layer 650 is equipped with a loss function (e.g., a loss function similar to classification cross-entropy) to calculate the prediction error, or to evaluate the degree of difference between the output of the CNN model (also known as the predicted value) and the ideal result (also known as the true value).

[0063] It should be noted that, as Figure 6 The CNN shown is only an example of a convolutional neural network. In specific applications, convolutional neural networks can also exist in the form of other network models, and this application does not limit them.

[0064] The above text combined Figures 4 to 6 This section introduces the layers of a neural network and their importance within the network. As can be seen, a neural network model includes an input layer, an output layer, and intermediate layers. Each layer of a neural network has its specific responsibilities and functions. The input layer is responsible for receiving and preprocessing data; the intermediate layers are responsible for feature extraction and processing; and the output layer is responsible for transforming the processed data into the desired output. Through the interaction of multiple layers, neural networks can process and analyze complex data and extract useful information from it.

[0065] Optionally, the input or output of any intermediate layer in a neural network model can be called an intermediate feature of the model. That is, the intermediate feature of the model can be the output of the input layer or any intermediate layer, or it can be the input of any intermediate layer or output layer.

[0066] A-IoT

[0067] In recent years, the Internet of Things (IoT) has garnered significant attention in the field of wireless communication. To improve productivity and enhance quality of life, more and more "things" are expected to be interconnected. Further reducing the size, complexity, and power consumption of IoT devices could enable the deployment of hundreds of billions or even trillions of IoT devices across various applications, providing added value throughout the value chain. Currently, most IoT devices require manual battery replacement or charging, leading to high maintenance costs, serious environmental problems, and even security risks in certain scenarios (such as wireless sensors in the power and oil industries).

[0068] Automation and digitalization across various industries have opened up many new markets, requiring new IoT technologies to support battery-free devices without energy storage capabilities or energy storage devices that do not require manual replacement or charging—i.e., A-IoT devices. These devices are extremely small in size and have no batteries or very limited energy storage capacity (compared to existing IoT devices such as Narrowband Internet of Things (NB-IoT), Low-Power Wide-Area Network (LPWA), and Reduced Capability (RedCap)). These devices can harvest other forms of energy from the environment, such as energy from radio signals, kinetic energy, heat, and light.

[0069] A-IoT devices have extremely limited capabilities and complexity due to their tiny size and lack of batteries or the need for charging, and they also have low transmission power.

[0070] Figure 7 The protocol stack of the A-IoT wireless interface between the A-IoT reader and the device is shown. The user plane protocol stack, from top to bottom, includes the A-IoT MAC layer and the A-IoT PHY. The control plane protocol stack is the same as the user plane protocol stack.

[0071] As an example, Figure 7 The wireless protocol architecture described herein is applicable to the first device in this application.

[0072] As an example, Figure 7 The wireless protocol architecture described herein is applicable to the second device in this application.

[0073] Currently, the primary devices used in scenarios such as inventory management are radio frequency identification (RFID). However, RFID cannot access networks in unlicensed frequency bands. Related communication systems (e.g., NR) have begun researching A-IoT devices in relevant protocols (e.g., Release 19), enabling more efficient device management, improved network efficiency, and enhanced security.

[0074] The following text combines Figures 8 to 11 This article details four topologies for A-IoT communication systems.

[0075] See Figure 8In Topology 1, A-IoT devices are directly connected to network devices (e.g., base stations) (i.e., readers). The reader is a network device with A-IoT capabilities. The signaling transmission method from the reader to the A-IoT device is different from the signaling transmission method from the A-IoT device to the reader. For details, please refer to the relevant protocol (e.g., TS38.291).

[0076] See Figure 9 In Topology 2, A-IoT devices and network devices are connected through intermediate nodes. These intermediate nodes include A-IoT-capable terminal devices, integrated access and backhaul (IAB) devices, repeaters, etc. In research on related communication systems (e.g., NR), the focus is primarily on intermediate nodes being A-IoT-capable terminal devices. Figure 9 In the topology 2 shown, the reader is the intermediate node. The interface between the intermediate node and the A-IoT device is... Figure 8 The topology shown is the same as in Topology 1, except that the signaling transmission method from the reader to the A-IoT device and the signaling transmission method from the A-IoT device to the reader are different. Communication between the intermediate node and the network device side is transmitted via Uu receiver.

[0077] See Figure 10A and Figure 10B In topology 3, during the uplink process, the A-IoT device receives signaling from the network device and sends signaling to the assisting node, or during the downlink process, the A-IoT device receives signaling from the assisting node and sends signaling to the network device. The assisting node can be a terminal device with A-IoT capabilities, an IAB (Internet Access Module), a repeater, or other similar device.

[0078] See Figure 11 In Topology 4, the A-IoT device is directly connected to the terminal device (e.g., UE), where the terminal device has A-IoT capabilities and the reader is the terminal device.

[0079] In some implementations, the embodiments of this application are applicable to topologies 1 and 2 described above. Of course, the embodiments of this application can also be applied to other topologies, and this application does not impose any limitations on this.

[0080] In some scenarios, the first device (e.g., an A-IoT device) needs to actively initiate random access. However, how to actively send random access messages is a problem that urgently needs to be solved.

[0081] Taking the first device as an A-IoT device as an example, research on related protocols (e.g., Rel-19) mainly focuses on device 1 type A-IoT devices. Device 1 type A-IoT devices lack batteries and energy storage capabilities, have extremely simple structures, and can achieve clock synchronization accuracy of 10. 5 Due to the extremely low synchronization capability of A-IoT devices, they require reader-to-device (R2D) signals to provide a synchronization clock and trigger corresponding device-to-reader (D2R) transmissions when transmitting signals. This includes device-originated-by-device-terminated trigger (DO-DTT) and device-terminated (DT) services. Before sending a D2R transmission, an A-IoT device receives corresponding R2D information and obtains synchronization information, making it impossible for A-IoT devices to spontaneously send signals. In certain scenarios, such as workshop accident alarms, disaster alarms, and sensor information reporting, A-IoT devices need to actively send D2R transmissions for reporting, i.e., device-originated autonomous (DO-A) services. It should be noted that R2D transmission is from reader to device, while D2R transmission is from device to reader.

[0082] In the research on relevant protocols (e.g., Rel-20), the main A-IoT device types studied also include device2b and device C. Compared with device1 A-IoT devices, device2b and deviceC type A-IoT devices have battery storage capabilities (which are much lower than those of general terminal devices) and can support more accurate clocks, thus supporting DO-A service requirements.

[0083] When an A-IoT device initially connects, it needs to receive an A-IoT paging message from the reader and determine the transmission resources and synchronization information for the random access message. When the reader needs to reconnect to the network after a long period of inactivity, or after a power outage and recharging, the A-IoT device needs to re-enter the network via random access. However, current A-IoT systems do not support random access for DO-A services. For device 2b and device C type A-IoT devices, a random access message needs to be actively sent even without receiving an A-IoT paging message. While this saves energy from listening to A-IoT paging messages and reduces R2D signaling overhead, the relevant protocols do not specify the transmission resources for actively sent random access messages.

[0084] To address the aforementioned issues, this application provides a wireless communication method in which a first device receives a first R2D transmission for determining a first transmission resource, which is used to transmit a random access message. Based on the first R2D transmission, the first device can determine the transmission resource for the random access message, enabling the first device to actively send the random access message and thus improving communication efficiency.

[0085] The following text combines Figure 12 This application describes a wireless communication method according to an embodiment. Figure 12 This is a schematic flowchart of a wireless communication method according to an embodiment of this application. Figure 12 The method shown includes step S1210.

[0086] In step S1210, the first device listens to the first R2D transmission.

[0087] In some implementations, the first device can be an A-IoT device.

[0088] In some implementations, the first device can be an active A-IoT device, which can be understood as an A-IoT device capable of generating its own uplink signal carrier. For example, the first device can be one or more of the following types of A-IoT devices: device 2a, device 2b, or device C. Alternatively, the first device can be another new type of A-IoT device with higher complexity and precision.

[0089] In some implementations, the first device can be a passive A-IoT device. This can be understood as an A-IoT device that cannot generate its own uplink carrier but can transmit uplink signals by backscattering carriers from other devices. For example, the first device is a device 1 type A-IoT device.

[0090] In some implementations, the first R2D transmission is sent by the second device.

[0091] In some implementations, the second device can be a reader with A-IoT capabilities.

[0092] In some implementations, the second device can be a terminal device and / or a network device. For example, the second device can be a base station with A-IoT capabilities as mentioned above. Another example is that the second device can be an intermediate node as mentioned above, which can be one or more of the following devices: terminal devices, IABs, repeaters, and relays, where IABs, repeaters, and relays can be terminal devices or network devices.

[0093] In some implementations, the first R2D transmission is used to determine a first transmission resource, which is used to transmit random access messages.

[0094] In some implementations, the first R2D transmission may also be referred to as the "first R2D message" or the "first R2D signal".

[0095] In some implementations, the first transmission resource is used to transmit random access messages; that is, the first transmission resource is the transmission resource for random access messages.

[0096] In this application embodiment, the transmission resources are not limited. In some implementations, the transmission resources may include one or more of the following: time-domain resources, frequency-domain resources, and code-domain resources. Taking time-domain resources as an example, the time-domain resources may include symbols, slots, subframes, frames, chips, etc. Of course, in this application embodiment, the transmission resources may also include other time-domain resources introduced in future communication systems. Taking frequency-domain resources as an example, the frequency-domain resources may include subcarriers, frequency bands, bandwidth, etc. Of course, in this application embodiment, the frequency-domain resources may also include other frequency-domain resources introduced in future communication systems. Taking code-domain resources as an example, the code-domain resources may include codebooks, codewords, etc. Of course, in this application embodiment, the code-domain resources may also include other code-domain resources introduced in future communication systems.

[0097] In some implementations, the random access message can be a random access message for the DO-A service, or in other words, a random access message actively sent by the first device. Of course, in the embodiments of this application, the random access message can be a random access message for the DO-DTT service or the DT service.

[0098] In some implementations, the random access message for DO-A service may differ from the random access message for DO-DTT service or DT service.

[0099] In some other implementations, the random access message for DO-A service can be the same as the random access message for DO-DTT service or DT service.

[0100] In some implementations, the random access message can be a random access message for the DO-A service, that is, the first transmission resource is used for the transmission of random access messages for the DO-A service.

[0101] In some implementations, the random access message can be a random access message for DO-A service, or a random access message for DO-DTT service or DT service. That is to say, the first transmission resource can be used for the transmission of random access messages for DO-A service, or for the transmission of random access messages for DO-DTT service or DT service.

[0102] In some implementations, the random access message actively sent by the first device can be understood as a random access message actively sent by the first device when it has not received a paging message.

[0103] In some implementations, the random access message can be a message sent by the first device during the initial access process for the first device to access the network. For example, the random access message can be one or more of the following types of messages: message 1 (message 1, Msg 1) and message A (message A, Msg A).

[0104] In some implementations, the random access message includes at least one of the following: random access identification information; service type information; device type information; and priority information.

[0105] In some implementations, random access identification information includes a random identity (randomID) and / or a device identity (device ID).

[0106] In some implementations, the random access identification information includes a 16-bit random ID, which is a 16-bit random number generated by the first device.

[0107] In some implementations, the random access message includes a random identifier, and the random access message is also called a "random ID message".

[0108] In some implementations, the random access identification information includes the device identifier. For example, in message A, the random access message includes the device ID.

[0109] In some implementations, service type information can be used to indicate the specific service requirement for the first device to initiate random access. For example, service type information could be an emergency alarm. Another example is event-triggered reporting. Yet another example is DO-A service, DO-DTT service, or DT service.

[0110] In some implementations, device type information is used to indicate the type of the first device. For example, device type information may be used to indicate that the first device is of one or more of the following types: device 1, device a, device 2b, device C.

[0111] In some implementations, priority information can be used to indicate the priority of the service that the first device initiates for random access. For example, the service that the first device initiates for random access can be one or more of the following: emergency alarm, time-triggered reporting, and periodic data reporting. Emergency alarm has a high priority, event-triggered reporting has a medium priority, and periodic data reporting has a low priority. The priority information indicates the priority corresponding to the service that initiates random access.

[0112] In some implementations, priority information can be used to indicate the access priority of the first device. For example, different first devices may have different access priorities, such as a passive A-IoT device having a higher access priority than an active A-IoT device. The priority information indicates the corresponding access priority of the first device.

[0113] In some implementations, the smaller the value of the priority information, the higher the priority. For example, there are four priorities {0, 1, 2, 3}, where priority 0 represents the highest priority, priority 1 represents the second highest priority, and so on.

[0114] In some implementations, a higher priority value indicates a higher priority. For example, in a scenario with four priorities {0, 1, 2, 3}, priority 3 represents the highest priority, followed by priority 2, and so on.

[0115] In some implementations, the first R2D transmission is one or more of the following message types: paging message; message 2 (Msg 2); message 4 (Msg 4); random access trigger message.

[0116] In some implementations, paging messages, message 2, message 4, and random access trigger messages can be the messages defined in Rel-19.

[0117] In some other implementations, the paging message, message 2, message 4, and random access trigger message may be different from the paging message, message 2, message 4, and random access trigger message defined in Rel-19. That is to say, the paging message, message 2, message 4, and random access trigger message are newly defined messages for DO-A services.

[0118] In some implementations, the paging message can be an A-IoT paging message.

[0119] In some implementations, the first R2D transmission is an A-IoT paging message, which can be understood as an A-IoT paging message that paging the first device before sending a random access message.

[0120] In some implementations, the first R2D transmission is the most recent A-IoT paging message for the first device before the random access message was sent.

[0121] In some implementations, the first R2D transmission is message 2, which can be understood as message 2 in the random access process before sending the random access message.

[0122] In some implementations, the first R2D transmission is message 2 from the most recent random access process before the random access message was sent. For example, the first R2D transmission is message 2 from the previous round of random access.

[0123] In some implementations, message 2 includes a random ID response message. For example, during the previous round of random access, the first device sends a random access message to the second device, which is a random ID message. In response to the random ID message, the second device sends a random ID response message to the first device. This random ID response message serves as the first R2D transmission and is used to determine the transmission resources for subsequent random access messages.

[0124] In some implementations, the first R2D transmission is message 4, which can be understood as message 4 in the random access process before sending the random access message.

[0125] In some implementations, the first R2D transmission is message 4 from the most recent random access process before the random access message was sent. For example, the first R2D transmission is message 4 from the previous round of random access process.

[0126] In some implementations, the first R2D transmission is a random access trigger message, which can be understood as a random access trigger message that triggers random access before sending a random access message.

[0127] In some implementations, the first R2D transmission is the random access trigger message that most recently triggered random access before sending the random access message. For example, the first R2D transmission is the random access trigger message that triggered the previous round of random access procedures.

[0128] In some implementations, the random access trigger message includes an access occasion trigger message.

[0129] In some implementations, the first R2D transfer is an R2D upper layer data transfer message.

[0130] In some implementations, the first R2D transmission satisfies one or more of the following: the first R2D transmission is a specific sequence; the first R2D transmission includes all or part of a timing acquisition signal (TAS); or the first R2D transmission includes at least two unidirectional transition edges.

[0131] In some implementations, the first R2D transmission is a specific sequence, which can be understood as a sequence dedicated to determining the first transmission resource. For example, the first R2D transmission is a sequence dedicated to determining the first time-domain resource of Msg 1 for DO-A service.

[0132] In some implementations, the protocol predefines the sequence of the first R2D transmission as a single sequence.

[0133] In other implementations, the protocol predefines the sequence of the first R2D transmission as one of a set of sequences.

[0134] In some implementations, when the sequence transmitted by the first R2D supports multiple sequences or a set of sequences, the sequence transmitted by the first R2D is configured by pre-configuration information.

[0135] In some implementations, when the sequence of the first R2D transmission supports multiple sequences or a set of sequences, the sequence of the first R2D transmission is determined according to a method predefined by the protocol. For example, the protocol predefines that different first R2D transmission sequences are used for different device types, different transmission rates, different bandwidths, and different modulation schemes.

[0136] In some implementations, the sequence transmitted in the first R2D transmission can be an m-sequence, a Golay sequence, or a Walsh sequence, etc.

[0137] In some implementations, the first R2D transfer supports sequences of different lengths.

[0138] In some implementations, the first R2D transmission is the same sequence as the long and / or short sequence of the D2R preamble.

[0139] In some implementations, timing capture signals are used by the device to identify the start position of R2D transmission and obtain synchronization information. R2D timing capture signals are required before transmission on the physical R2D channel (PRDCH).

[0140] In some implementations, the timing acquisition signal mainly consists of two parts: the first part is the start indicator part (SIP), which indicates the start of R2D transmission; the second part is the clock acquisition part (CAP), which provides the device with the R2D clock synchronization message.

[0141] In some implementations, SIP contains 8 bits, represented as "11001000".

[0142] In some implementations, the clock capture portion contains 4 bits represented as "1010".

[0143] In some implementations, the timing acquisition signal occupies two NR orthogonal frequency division multiplexing (OFDM) symbols, and the subcarrier spacing (SCS) is 15 kHz.

[0144] In some implementations, the first R2D transmission includes the entire timing capture signal; that is, the first R2D transmission is a timing capture signal. For example, the first R2D transmission is a TAS followed by an R2D postamble sequence.

[0145] In some implementations, the R2D postamble contains 4 bits represented as "1111".

[0146] In other implementations, the first R2D transmission includes a portion of the timing capture signal; that is, the first R2D transmission includes a part of the timing capture signal. For example, the first R2D transmission includes SIP or CAP in TAS.

[0147] In some implementations, the first R2D transmission is a SIP in the TAS, followed immediately by an R2D postamble sequence. Since the R2D postamble sequence is used to indicate the end position of the R2D transmission, the first R2D transmission following the R2D postamble sequence helps avoid the energy consumption caused by the first device continuing to receive R2D transmissions after detecting the SIP, and also distinguishes it from other R2D transmissions, helping the first device to identify the first R2D transmission.

[0148] In some implementations, the first R2D transmission is the CAP in TAS, followed by an R2D postamble sequence.

[0149] In some implementations, the first R2D transmission includes all or part of the timing capture signal. The first R2D transmission can be used to determine the first transmission resource, provide clock synchronization for A-IoT devices with poor clocking capabilities, and calibrate the clock, which helps to improve the accuracy of the transmission.

[0150] In some implementations, the first R2D transmission includes at least two unidirectional transition edges.

[0151] In some implementations, the transition edge can be a transition edge from low level to high level, or in other words, the transition edge can be a transition edge from "OFF" to "ON".

[0152] In some other implementations, the transition edge can be a transition edge from high level to low level, or in other words, the transition edge can be a transition edge from "ON" to "OFF".

[0153] In some implementations, the time between two adjacent transition edges can be used for clock synchronization.

[0154] In some implementations, the time between two adjacent transition edges can be used to determine the chip duration of the random access message.

[0155] In some implementations, the first R2D transmission includes at least two unidirectional transition edges, and the first R2D transmission is a transmission of a fixed bit value / sequence. For example, the first R2D transmission is a 6-bit transmission of "101010", or an 8-bit transmission of "11001010", etc.

[0156] In some implementations, the first R2D transmission includes at least two unidirectional transition edges, and the duration of the first R2D transmission is fixed. For example, the duration of the first R2D transmission is one OFDM symbol with an SCS of 15 kHz.

[0157] In other implementations, the first R2D transmission includes at least two unidirectional transition edges. The pattern of the first R2D transmission is fixed, and the duration of the first R2D transmission varies depending on the modulation coefficient. For example, the first R2D transmission pattern is a fixed sequence, such as "11001010" in 8 bits, and the duration of this sequence varies for different modulation parameter M values.

[0158] In some implementations, the first R2D transmission is of a type that can be distinguished from existing R2D messages. For example, the bit sequence of the first R2D transmission is different from the SIP and / or CAP in TAS.

[0159] In the embodiments of this application, the first R2D transmission may also be other types of R2D transmission, and this application does not limit it.

[0160] In some implementations, the transmission method of the first R2D transmission includes one or more of the following: periodic transmission; non-periodic transmission; semi-persistent transmission.

[0161] In some implementations, the first R2D transmission is used for clock synchronization; that is, the first R2D transmission can serve as a synchronization signal. For example, the first R2D transmission may be a periodic, semi-persistent, or aperiodic transmission for clock synchronization of the first device.

[0162] In the embodiments of this application, there are multiple ways to implement the first R2D transmission. The first R2D transmission in the embodiments of this application will be described below with reference to Embodiment 1 and Embodiment 2.

[0163] Example 1: The transmission resources of the first R2D transmission are used as reference information for determining the first transmission resources.

[0164] In some implementations, since the transmission resources of the first R2D transmission can serve as reference information for determining the first transmission resources, the first R2D transmission is also referred to as a "reference signal". As a reference signal, the first R2D transmission can reduce signaling overhead for resource configuration and save transmission resources, thus helping to improve resource utilization.

[0165] In some implementations, the transmission resources of the first R2D transmission serve as reference information for determining the first transmission resources. This can be understood as the first transmission resources being determined based on the transmission resources of the first R2D transmission.

[0166] In some implementations, the first transmission resource includes a first time-domain resource and / or a first frequency-domain resource.

[0167] In some implementations, the first transmission resource can be determined based on the transmission resources of the first R2D transmission. This can be understood as the first time-domain resource being determined based on the time-domain resources of the first R2D transmission, and / or the first frequency-domain resource being determined based on the frequency-domain resources of the first R2D transmission. For example, if the first R2D transmission is an A-IoT paging message, Msg2, Msg4, or a random access trigger message, the first time-domain resource can be determined based on the time-domain resources of the A-IoT paging message, Msg2, Msg4, or the random access trigger message, and / or the first frequency-domain resource can be determined based on the frequency-domain resources of the A-IoT paging message, Msg2, Msg4, or the random access trigger message. Therefore, the first time-domain resource differs from the time-domain resource configured in the A-IoT paging message, Msg2, Msg4, or the random access trigger message, and the first frequency-domain resource may be the same as or different from the frequency-domain resource configured in the A-IoT paging message, Msg2, Msg4, or the random access trigger message.

[0168] In some implementations, the first transmission resource can be determined based on the transmission resources of the first R2D transmission. This can be understood as the first transmission resource being determined based on information related to the first transmission resource and the transmission resources of the first R2D transmission.

[0169] In some implementations, the first transmission resource includes a first time-domain resource and / or a first frequency-domain resource, and the information related to the first transmission resource includes information related to the first time-domain resource and / or information related to the first frequency-domain resource.

[0170] In some implementations, the first transmission resource includes a first time-domain resource, and the information related to the first transmission resource includes at least one of the following: the start or start offset of the first time-domain resource; the end or end offset of the first time-domain resource; the duration of the first time-domain resource; the start reference point of the first time-domain resource; the end reference point of the first time-domain resource; the periodicity of the first time-domain resource; and the number of time-division multiplexed first time-domain resources. Alternatively, the information related to the first transmission resource includes information related to the first time-domain resource, which includes at least one of the following: the start or start offset of the first time-domain resource; the end or end offset of the first time-domain resource; the duration of the first time-domain resource; the start reference point of the first time-domain resource; the end reference point of the first time-domain resource; the periodicity of the first time-division multiplexed first time-domain resources.

[0171] In some implementations, the number of first time-domain resources for time-division multiplexing can be understood as the number of time-domain resources that can be used for time-division multiplexing within the first time-domain resources.

[0172] In some implementations, the starting offset of the first time-domain resource is used to indicate the time-domain interval between the start of the first time-domain resource and the starting reference point of the first time-domain resource.

[0173] In some implementations, the end offset of the first time-domain resource is used to indicate the time-domain interval between the end of the first time-domain resource and the end reference point of the first time-domain resource.

[0174] In some implementations, the starting reference point and / or the ending reference point of the first time-domain resource are used to indicate the specific time-domain location.

[0175] In other implementations, the start reference point and / or end reference point of the first time-domain resource are used to indicate information related to the reference point. For example, the start reference point of the first time-domain resource is used to indicate the message type that serves as the reference point.

[0176] In some implementations, the four pieces of information of the first time domain resource mentioned above—start or start offset, end or end offset, period, and duration—are used as units in one or more of the following: NR time unit; physical time; chip duration.

[0177] In some implementations, the time unit of NR can be one or more of the following: symbol, time slot, subframe, frame.

[0178] In some implementations, physical time can be one or more of the following: seconds, milliseconds, microseconds, etc.

[0179] In some implementations, the chip duration is the duration of a high or low level after the information bits have been encoded and modulated.

[0180] In some implementations, chip duration can be understood as the chip duration in an A-IoT system. For example, chip duration can be the chip duration for R2D transmission or the chip duration for D2R transmission.

[0181] In some implementations, the information associated with the first transport resource may include a starting offset of a first time-domain resource.

[0182] In some implementations, the information related to the first transmission resource may include the starting offsets of multiple first time-domain resources. That is, the information related to the first transmission resource may include a set of starting offsets of multiple first time-domain resources, or a list of starting offsets of first time-domain resources. For example, if the starting offsets of multiple first time-domain resources are start offset1, start offset2, and start offset3, the information related to the first transmission resource may include a set of starting offsets of multiple first time-domain resources, namely {start offset1, start offset2, start offset3}.

[0183] In some implementations, the information associated with the first transport resource may include an end offset of a first time-domain resource.

[0184] In some implementations, the information related to the first transmission resource may include the end offsets of multiple first time-domain resources. That is, the information related to the first transmission resource may include a set of end offsets of multiple first time-domain resources, or a list of end offsets of first time-domain resources. For example, if the end offsets of multiple first time-domain resources are end offset1, end offset2, and end offset3, the information related to the first transmission resource may include a set of end offsets of multiple first time-domain resources, namely {end offset1, end offset2, end offset3}.

[0185] In some implementations, the information associated with the first transmission resource may include the duration of a first time-domain resource.

[0186] In some implementations, the information related to the first transmission resource may include the durations of multiple first time-domain resources. That is, the information related to the first transmission resource may include a set of the durations of multiple first time-domain resources, or a list of the durations of the first time-domain resources. For example, if the durations of the multiple first time-domain resources are D1, D2, and D3, the information related to the first transmission resource may include a set of the durations of the multiple first time-domain resources, namely {D1, D2, D3}.

[0187] In some implementations, the information related to the first transmission resource may include the period of a first time-domain resource.

[0188] In some implementations, the information related to the first transmission resource may include the periods of multiple first time-domain resources. That is, the information related to the first transmission resource may include a set of periods of multiple first time-domain resources, or a list of periods of first time-domain resources. For example, if the periods of multiple first time-domain resources are P1, P2, and P3, the information related to the first transmission resource may include a set of periods of multiple first time-domain resources, namely {P1, P2, P3}.

[0189] In some implementations, the information associated with the first transport resource may include a starting reference point for the first time-domain resource.

[0190] In some implementations, the information related to the first transmission resource may include the starting reference points of multiple first time-domain resources. For example, the first transmission resource includes multiple first time-domain resources and two starting reference points, where the first starting reference point serves as the starting reference point of the first first time-domain resource, and the second starting reference point serves as the starting reference point of the other first time-domain resources. The other first time-domain origins are the first time-domain resources other than the first first time-domain resource among the multiple first time-domain resources.

[0191] In some implementations, the information associated with the first transport resource may include an end reference point for the first time-domain resource.

[0192] In some implementations, the information related to the first transmission resource may include the end reference points of multiple first time domain resources. For example, the first transmission resource includes multiple first time domain resources and two end reference points, where the first end reference point serves as the end reference point of the first first time domain resource, and the second end reference point serves as the end reference point of the other first time domain resources, wherein the other first time domain resources are the first time domain resources other than the first first time domain resource among the multiple first time domain resources.

[0193] In some implementations, the information related to the first transmission resource includes the start offset and end offset of the first time domain resource.

[0194] For example, the information related to the first transmission resource includes a start offset and an end offset of the first time domain resource. The start offset of the first time domain resource is called start offset, and the end offset of the first time domain resource is called end offset. The information related to the first transmission resource includes {start offset, end offset}.

[0195] For example, the information related to the first transmission resource includes the start offset of a first time domain resource and the end offsets of multiple first time domain resources. The start offset of the first time domain resource is called start offset, and the end offsets of the multiple first time domain resources are end offset1, end offset2 and end offset3 respectively. The information related to the first transmission resource includes {start offset, {end offset1, end offset2, end offset3}}.

[0196] For example, the information related to the first transmission resource includes the start offset of multiple first time domain resources and the end offset of a first time domain resource. The start offsets of the multiple first time domain resources are start offset1, start offset2 and start offset3 respectively, and the end offsets of the first time domain resources are end offset respectively. The information related to the first transmission resource includes {{start offset1, start offset2, start offset3}, end offset}.

[0197] For example, the information related to the first transmission resource includes the start offset of one or more first time domain resources and the end offset of multiple first time domain resources. The start offset of the first time domain resources is called start offset, and the end offset of the first time domain resources is called end offset. The information related to the first transmission resource includes a list of {start offset, end offset}.

[0198] In some implementations, the information related to the first transmission resource includes the start offset of the first time domain resource and the duration of the first time domain resource.

[0199] For example, the information related to the first transmission resource includes a start offset of a first time-domain resource and a duration of a first time-domain resource, wherein the start offset of the first time-domain resource is called start offset and the duration of the first time-domain resource is called D. The information related to the first transmission resource includes {start offset, D}.

[0200] For example, the information related to the first transmission resource includes the start offset of a first time domain resource and the duration of multiple first time domain resources. The start offset of the first time domain resource is called start offset, and the duration of the multiple first time domain resources is called D1, D2 and D3. The information related to the first transmission resource includes {start offset, {D1, D2, D3}}.

[0201] For example, the information related to the first transmission resource includes the start offsets of multiple first time-domain resources and the duration of a first time-domain resource. The start offsets of the multiple first time-domain resources are start offset1, start offset2 and start offset3, respectively, and the duration of the first time-domain resource is D. The information related to the first transmission resource includes {{start offset1, start offset2, start offset3}, D}.

[0202] For example, the information related to the first transmission resource includes the start offset of one or more first time domain resources and the duration of multiple first time domain resources. The start offset of the first time domain resource is called start offset, and the duration of the first time domain resource is called D. The information related to the first transmission resource includes a list of {start offset, D}.

[0203] For example, the information related to the first transmission resource includes the start offset of one or more first time-domain resources and the duration of multiple first time-domain resources. The start offsets of the first time-domain resources are start offset1, start offset2, and start offset3, and the durations of the multiple first time-domain resources are D1, D2, and D3. The information related to the first transmission resource includes {start offset1, D1, start offset2, D2, start offset3, D3}.

[0204] In some implementations, the information related to the first transmission resource includes the end offset of the first time-domain resource and the duration of the first time-domain resource.

[0205] For example, the information related to the first transmission resource includes an end offset of a first time-domain resource and a duration of the first time-domain resource, wherein the end offset of the first time-domain resource is called end offset and the duration of the first time-domain resource is called D. The information related to the first transmission resource includes {end offset, D}.

[0206] For example, the information related to the first transmission resource includes the end offset of a first time domain resource and the duration of multiple first time domain resources. The end offset of the first time domain resource is called end offset, and the duration of the multiple first time domain resources is D1, D2, and D3. The information related to the first transmission resource includes {end offset, {D1, D2, D3}}.

[0207] For example, the information related to the first transmission resource includes the end offsets of multiple first time-domain resources and the duration of a first time-domain resource. The end offsets of the multiple first time-domain resources are end offset1, end offset2 and end offset3, respectively, and the duration of the first time-domain resource is D. The information related to the first transmission resource includes {{endoffset1, end offset2, end offset3}, D}.

[0208] In some implementations, the information related to the first transmission resource includes the period of the first time domain resource, the start offset of the first time domain resource, and the end offset of the first time domain resource.

[0209] For example, the information related to the first transmission resource includes the period of a first time domain resource, the end offset of a first time domain resource, and the end offset of a first time domain resource. The period of the first time domain resource is P, the start offset of the first time domain resource is start offset, and the end offset of the first time domain resource is end offset. The information related to the first transmission resource includes {P, start offset, end offset}.

[0210] For example, the information related to the first transmission resource includes the period of a first time domain resource, the end offsets of multiple first time domain resources, and the end offset of a first time domain resource. The period of the first time domain resource is P, the start offsets of the multiple first time domain resources are start offset1, start offset2, and start offset3, respectively, and the end offset of the first time domain resource is end offset. The information related to the first transmission resource includes {P, {start offset1, start offset2, start offset3}, end offset}.

[0211] For example, the information related to the first transmission resource includes the period of a first time domain resource, the end offset of a first time domain resource, and the end offsets of multiple first time domain resources. The period of the first time domain resource is P, the start offsets of the first time domain resources are start offset, and the end offsets of the multiple first time domain resources are end offset1, end offset2, and end offset3. The information related to the first transmission resource includes {P, start offset, {end offset1, end offset2, end offset3}}.

[0212] In some implementations, the information related to the first transmission resource includes the period of the first time domain resource, the start offset of the first time domain resource, and the duration of the first time domain resource.

[0213] For example, information related to the first transmission resource includes the period of a first time-domain resource, the end offset of a first time-domain resource, and the duration of a first time-domain resource. The period of the first time-domain resource is P, the start offset of the first time-domain resource is start offset, and the duration of the first time-domain resource is D. The information related to the first transmission resource includes {P, start offset, D}.

[0214] For example, the information related to the first transmission resource includes the period of a first time domain resource, the end offset of a first time domain resource, and the duration of multiple first time domain resources. The period of the first time domain resource is P, the start offset of the first time domain resource is start offset, and the duration of multiple first time domain resources is D1, D2, and D3. The information related to the first transmission resource includes {P, start offset, {D1, D2, D3}}.

[0215] For example, the information related to the first transmission resource includes the period of a first time domain resource, the end offsets of multiple first time domain resources, and the duration of a first time domain resource. The period of the first time domain resource is P, the start offsets of the multiple first time domain resources are start offset1, start offset2, and start offset3, respectively, and the duration of the first time domain resource is D. The information related to the first transmission resource includes {P, {start offset1, start offset2, start offset3}, D}.

[0216] In some implementations, the maximum number of each type of information or each set included in the information related to the first transmission resource is predefined by the protocol or configured by the second device. For example, the information related to the first transmission resource includes the start offset of the first time-domain resource, and the maximum number of start offsets predefined by the protocol is N1. As another example, the information related to the first transmission resource includes a list of {start offset, D}, and the maximum number of this list configured by the second device is N2.

[0217] In some implementations, the maximum number of different information or sets can be the same or different. For example, information related to the first transmission resource includes the start offset and end offset of the first time domain resource. The start offset of the first time domain resource is called start offset, and the end offset is called end offset. The maximum number of start offsets is N1, and the maximum number of end offsets is N2. The values ​​of N1 and N2 can be the same or different.

[0218] In some implementations, the maximum number of each type of information or each set is greater than or equal to 1.

[0219] In some implementations, the first transmission resource includes a first frequency domain resource, and the information related to the first transmission resource includes at least one of the following: the number of frequency-division multiplexed first frequency domain resources; the small frequency shift (SFS) parameter of the first frequency domain resource; the frequency shift amount of the first frequency domain resource; the reference point of the first frequency domain resource; the frequency band location of the first frequency domain resource; and the bandwidth of the first frequency domain resource. Alternatively, the information related to the first transmission resource includes information related to the first time domain resource, and the information related to the first time domain resource includes at least one of the following: the number of frequency-division multiplexed first frequency domain resources; the SFS parameter of the first frequency domain resource; the frequency shift amount of the first frequency domain resource; the reference point of the first frequency domain resource; the frequency band location of the first frequency domain resource; and the bandwidth of the first frequency domain resource.

[0220] In some implementations, the number of first frequency domain resources for frequency division multiplexing can be understood as the number of frequency domain resources in the first frequency domain that can be used for frequency division multiplexing.

[0221] In some implementations, the SFS parameter of the first frequency domain resource is used to indicate the distance of the frequency shift of the first frequency domain resource relative to the carrier wave.

[0222] In some implementations, the frequency shift of the first frequency domain resource is used to indicate the frequency domain spacing between the first frequency domain resource and its reference point.

[0223] In some implementations, the frequency band position of the first frequency domain resource is used to indicate the specific location of the first frequency domain resource in the frequency domain.

[0224] In some implementations, the information related to the first transmission resource can be predefined by the protocol, or in other words, the information related to the first transmission resource can be pre-defined by the protocol.

[0225] In some implementations, the information related to the first transmission resource can be predefined by the protocol. This can be understood as all the information related to the first transmission resource being predefined by the protocol.

[0226] In some implementations, the information related to the first transmission resource can be predefined by the protocol. This can be understood as a portion of the information related to the first transmission resource being predefined by the protocol. For example, the information related to the first transmission resource includes information related to the first time-domain resource and information related to the first frequency-domain resource; the protocol specifies the information related to the first time-domain resource. As another example, the first transmission resource includes a first time-domain resource, and the information related to the first transmission resource includes the start offset of the first time-domain resource, the duration of the first time-domain resource, and the period of the first time-domain resource; the protocol specifies the duration and period of the first time-domain resource.

[0227] In some implementations, before the first device listens to the first R2D transmission, the first device receives a second R2D transmission. The second R2D transmission is used to configure information related to the first transmission resource, or in other words, the second R2D transmission is used to indicate information related to the first transmission resource.

[0228] In some implementations, the second R2D transmission is sent by the second device.

[0229] In some implementations, the second R2D transmission is used to configure information related to the first transmission resource. This can be understood as the second R2D transmission being used to configure all the information related to the first transmission resource.

[0230] In some implementations, the second R2D transmission is used to configure information related to the first transmission resource. This can be understood as the part of the second R2D transmission used to configure information related to the first transmission resource.

[0231] In some implementations, a portion of the information related to the first transport resource may be configured by the second R2D transport, while another portion of the information related to the first transport resource is predefined by the protocol. For example, the first transport resource includes a first time-domain resource, and the information related to the first transport resource includes the period, duration, and start offset of the first time-domain resource. The period and duration of the first time-domain resource are configured by the second R2D transport, while the start offset is predefined by the protocol. Alternatively, the period of the first time-domain resource may be configured by the second R2D transport, while the duration and start offset are predefined by the protocol.

[0232] In some implementations, a portion of the information related to the first transmission resource may be configured by the second R2D transmission, while another portion of the information related to the first transmission resource is predefined by the protocol. This can be understood as the protocol predefining a calculation formula for the first transmission resource, and the second R2D transmission configuring or indicating information related to the calculation formula. For example, the first transmission resource includes a first time-domain resource, and the information related to the first transmission resource includes the period, duration, starting reference point, and starting offset of the first time-domain resource. The protocol predefines the period, duration, and starting offset of the first time-domain resource, and the starting reference point is configured by the second R2D transmission.

[0233] In some implementations, the information related to the first transmission resource is configured in the second R2D transmission, and this information is related to the type of the first device. For example, the second R2D transmission includes device type configuration information for which the first transmission resource is available. Alternatively, the configuration of the first transmission resource in the second R2D transmission may be specific to a particular device type.

[0234] In some implementations, the second R2D transmission includes device type configuration information indicating the availability of the first transmission resource. For example, the second R2D transmission includes a signaling indicating a device type, specifically one or more of {device 1, device 2, device C}. This signaling indicates that one or more device types represent the first device of that device type that can send message 1 using the first transmission resource configured in the second R2D transmission.

[0235] In some implementations, the configuration of the first transmission resource in the second R2D transmission is specific to a particular device type. For example, the configuration of the first transmission resource in the second R2D transmission is indicated by a first parameter, and the configuration indicated by the first parameter applies only to the first device of the first type. Alternatively, the configuration of the first transmission resource in the second R2D transmission is indicated by a second parameter, and the configuration indicated by the second parameter applies only to the first device of the second type. The first parameter and the second parameter are different, and the first type and the second type are different.

[0236] In some implementations, the information related to the first transmission resource is predefined by the protocol, is related to the type of the first device, or is related to the modulation parameters of Msg1.

[0237] In some implementations, the information related to the first transmission resource is predefined by the protocol and is related to the type of the first device. For example, the first transmission resource includes the start offset, duration, end offset, and periodicity of the first time-domain resource. The protocol predefines different values ​​for start offset, duration, end offset, and periodicity for different device types. Specifically, device 2 uses the value of start offset 1, device C uses the value of start offset 2, and the values ​​of start offset 1 and start offset 2 may be the same or different.

[0238] In some implementations, the information related to the first transmission resource is predefined by the protocol and is related to the modulation parameters of Msg1. For example, the first transmission resource includes the start offset, duration, end offset, and periodicity of the first time-domain resource. The protocol predefines that the start offset, duration, end offset, and periodicity have different values ​​for different modulation coefficients M. Specifically, if the modulation method of the first device is OOK-4 with modulation coefficient M = 2, the end offset of the first time-domain resource is end offset 1; if the type of the first device is OOK-4 with modulation coefficient M = 4, the end offset of the first time-domain resource is end offset 2, and the values ​​of start offset 1 and start offset 1 are the same.

[0239] In some implementations, the second R2D transmission is also used to indicate one or more of the following: the message type of the first R2D transmission; the transmission resources of the first R2D transmission; and the service type for which the first transmission resources are used for transmission.

[0240] In some implementations, the second R2D transmission is used to indicate the transmission resources of the first R2D transmission. This can be understood as the second R2D transmission being used to indicate information related to the time-domain resources and / or the frequency-domain resources of the first R2D transmission.

[0241] In some implementations, the service type that the first transmission resource is used to transmit can be understood as the service type of the random access message that the first transmission resource is used to transmit.

[0242] In some implementations, the first transmission resource can be used to transmit one or more of the following service types: DO-A service; DO-DTT service; DT service.

[0243] In some implementations, the second R2D transmission includes 1 bit of information indicating the service type for which the first transmission resource is used. For example, a bit value of "0" indicates that the first transmission resource configured in the second R2D transmission is used for Msg1 transmission of DO-DTT / DT service, and a bit value of "1" indicates that the first transmission resource configured in the second R2D transmission is used for Msg1 transmission of DO-A service. As another example, a bit value of "1" indicates that the first transmission resource configured in the second R2D transmission is used for Msg1 transmission of DO-DTT / DT service, and a bit value of "0" indicates that the first transmission resource configured in the second R2D transmission is used for Msg1 transmission of DO-A service.

[0244] In some implementations, the second R2D transmission includes a specific code indicating the type of service that the first transmission resource is used for. For example, a code with a default value indicates that the first transmission resource configured in the second R2D transmission is used for Msg1 transmission of DO-DTT / DT services, while a code with a specific value indicates that the first transmission resource configured in the second R2D transmission is used for Msg1 transmission of DO-A services.

[0245] In some implementations, the second R2D transmission is one or more of the following message types: paging message; message 2; message 4; random access trigger message.

[0246] In some implementations, paging messages, message 2, message 4, and random access trigger messages can be the messages defined in Rel-19.

[0247] In some other implementations, the paging message, message 2, message 4, and random access trigger message may be different from the paging message, message 2, message 4, and random access trigger message defined in Rel-19. That is to say, the paging message, message 2, message 4, and random access trigger message are newly defined messages.

[0248] In some implementations, the paging message can be an A-IoT paging message.

[0249] In some implementations, the second R2D transmission is an A-IoT paging message, which can be understood as an A-IoT paging message that paging the first device before the first R2D transmission is detected.

[0250] In some implementations, the second R2D transmission is the A-IoT paging message that was most recently paging the first device before the first R2D transmission.

[0251] In some implementations, the second R2D transmission is message 2, which can be understood as message 2 in the random access process before the first R2D transmission is detected.

[0252] In some implementations, the second R2D transmission is message 2 from the most recent random access process prior to the first R2D transmission.

[0253] In some implementations, the second R2D transmission is message 4, which can be understood as message 4 in the random access process before the first R2D transmission is detected.

[0254] In some implementations, the second R2D transmission is message 4 from the most recent random access process prior to the first R2D transmission.

[0255] In some implementations, the second R2D transmission is a random access trigger message, which can be understood as a random access trigger message that triggers the random access process before the first R2D transmission is detected.

[0256] In some implementations, the second R2D transmission is the random access trigger message that was most recently triggered before the first R2D transmission.

[0257] In some implementations, the second R2D transmission is a newly defined R2D transmission used to configure the first transmission resource. For example, the second R2D can be a reference signal or a synchronization signal.

[0258] In some implementations, the transmission method of the second R2D transmission includes one or more of the following: periodic transmission; non-periodic transmission; semi-persistent transmission.

[0259] In some implementations, the transmission interval of the second R2D transmission is greater than the transmission interval of the paging message and the random access trigger message in Rel-19.

[0260] In some implementations, the reference information includes one or more of the following: time-domain reference points; frequency-domain reference points.

[0261] In some implementations, the time-domain reference point can be the starting reference point and / or the ending reference point of the first time-domain resource mentioned above.

[0262] In some implementations, the frequency domain reference point can be the reference point of the first frequency domain resource mentioned above.

[0263] In some implementations, the transmission resources of the first R2D transmission are used as reference information for determining the first transmission resources. This can be understood as the time-domain resources of the first R2D transmission serving as a time-domain reference point for determining the first transmission resources, and / or the frequency-domain resources of the first R2D transmission serving as a frequency-domain reference point for determining the first transmission resources.

[0264] In some implementations, the time-domain resources of the first R2D transmission are used as the time-domain reference point for determining the first transmission resources. This can be understood as the start or end of the time-domain resources of the first R2D transmission being used as the start reference point of the first time-domain resources.

[0265] For example, if the starting offset of the first time-domain resource is T1, and the starting point of the time-domain resource of the first R2D transmission is taken as the starting reference point of the first time-domain resource, then the starting point of the first time-domain resource is T1 after the starting point of the time-domain resource of the first R2D transmission, or in other words, the starting point of the first time-domain resource is the position T1 after the starting point of the time-domain resource of the first R2D transmission.

[0266] For example, if the starting offset of the first time-domain resource is T1, and the end of the first R2D transmission of the time-domain resource is taken as the starting reference point of the first time-domain resource, then the starting point of the first time-domain resource is T1 after the end of the first R2D transmission of the time-domain resource, or in other words, the starting point of the first time-domain resource is the position offset T1 after the end of the first R2D transmission of the time-domain resource.

[0267] In some implementations, the time-domain resources of the first R2D transmission are used as the time-domain reference point for determining the first transmission resources. This can be understood as the start or end of the time-domain resources of the first R2D transmission being used as the end reference point of the first time-domain resources.

[0268] For example, if the end offset of the first time-domain resource is T2, and the start of the time-domain resource of the first R2D transmission is taken as the end reference point of the first time-domain resource, then the end of the first time-domain resource is T2 after the start of the time-domain resource of the first R2D transmission, or in other words, the end of the first time-domain resource is the position offset T2 after the start of the time-domain resource of the first R2D transmission.

[0269] For example, if the end offset of the first time-domain resource is T2, and the end of the time-domain resource of the first R2D transmission is taken as the end reference point of the first time-domain resource, then the end of the first time-domain resource is T2 after the end of the time-domain resource of the first R2D transmission, or in other words, the end of the first time-domain resource is the position offset T2 after the end of the time-domain resource of the first R2D transmission.

[0270] In some implementations, the time-domain resources of the first R2D transmission are used as the time-domain reference point for determining the first transmission resources. This can be understood as the start or end of the time-domain resources of the first R2D transmission being used as the starting reference point of the first time-domain resource.

[0271] For example, the first transmission resource includes n first time domain resources, the period of the first time domain resources is P, the starting offset of the first first time domain resource is T1, and the starting point of the first R2D transmission time domain resource is used as the starting reference point of the first first time domain resource. Then the starting point of the first first time domain resource is T1 after the starting point of the first R2D transmission time domain resource, or in other words, the starting point of the first first time domain resource is the position T1 after the starting point of the first R2D transmission time domain resource. The starting point of the nth first time domain resource is (n-1)*P+T1 after the starting point of the first R2D transmission time domain resource, or in other words, the starting point of the nth first time domain resource is (n-1)*P+T1 after the starting point of the first R2D transmission time domain resource.

[0272] For example, the first transmission resource includes n first time-domain resources, the period of the first time-domain resource is P, the starting offset of the first first time-domain resource is T1, and the end of the first R2D transmission time-domain resource is used as the starting reference point of the first time-domain resource. Then the starting point of the first first time-domain resource is T1 after the end of the first R2D transmission time-domain resource, or in other words, the starting point of the first first time-domain resource is the position offset T1 after the end of the first R2D transmission time-domain resource. The starting point of the nth first time-domain resource is (n-1)*P+T1 after the end of the first R2D transmission time-domain resource, or in other words, the starting point of the nth first time-domain resource is offset (n-1)*P+T1 after the end of the first R2D transmission time-domain resource.

[0273] In some implementations, the time-domain resources of the first R2D transmission are used as the time-domain reference point for determining the first transmission resources. This can be understood as the start or end of the time-domain resources of the first R2D transmission being used as the end reference point of the first time-domain resource.

[0274] For example, the first transmission resource includes n first time-domain resources. The end offset of the first first time-domain resource is T2, and the start offset of the other n-1 first time-domain resources is T3. The start of the time-domain resource of the first R2D transmission is used as the end reference point of the first first time-domain resource, and the start or end of the (n-1)th first time-domain resource is used as the start reference point of the nth first time-domain resource. Then, the end of the first first time-domain resource is T2 after the start of the first R2D transmission time-domain resource, or in other words, the end of the first first time-domain resource is the position offset T2 after the start of the first R2D transmission time-domain resource. The start of the nth first time-domain resource is T3 after the start or end of the (n-1)th first time-domain resource, or in other words, the start of the nth first time-domain resource is the position offset T3 after the start or end of the (n-1)th first time-domain resource.

[0275] For example, the first transmission resource includes n first time-domain resources. The end offset of the first first time-domain resource is T2, and the start offset of the other n-1 first time-domain resources is T3. The end of the first R2D transmission time-domain resource is used as the end reference point of the first time-domain resource, and the start or end of the (n-1)th first time-domain resource is used as the start reference point of the nth first time-domain resource. Then, the end of the first first time-domain resource is T2 after the end of the first R2D transmission time-domain resource, or in other words, the end of the first first time-domain resource is the position offset by T2 after the end of the first R2D transmission time-domain resource. The start of the nth first time-domain resource is T3 after the start or end of the (n-1)th first time-domain resource, or in other words, the start of the nth first time-domain resource is the position offset by T3 after the start or end of the (n-1)th first time-domain resource.

[0276] As mentioned above, the first R2D transmission can be one or more of the following four message types: paging message, message 2, message 4, and random access trigger message. In some implementations, when the first R2D transmission can serve as reference information for determining the first transmission resource, the first R2D transmission can be the R2D transmission defined in Rel-19, that is, the first R2D transmission is the paging message, message 2, message 4, and random access trigger message defined in Rel-19.

[0277] In some implementations, the information related to the first transmission resource is predefined by the protocol. The first device determines the first transmission resource based on the relevant information of the first transmission resource and the transmission resource of the first R2D transmission. For example, the protocol predefines all the information related to the first transmission resource, and the transmission resource of the first R2D transmission serves as the time-domain reference point for determining the first transmission resource. When the first device needs to access the network for the first time after powering on, it needs to listen to the first R2D transmission first, and then determine the first transmission resource of transmission message 1 based on the time-domain resource of the first R2D transmission and the information related to the first transmission resource predefined by the protocol.

[0278] In some implementations, the second R2D transmission is used to configure information related to the first transmission resource. The first device determines the first transmission resource based on the information configured by the second R2D transmission and the transmission resource of the first R2D transmission. For example, the second R2D transmission may be used to configure all the information related to the first transmission resource. After the first device accesses the network, it receives the second R2D transmission and saves the information configured by the second R2D transmission. If it does not communicate with the second device for a long time due to factors such as power failure, it needs to re-access randomly when it needs to communicate with the second device again. Before communicating again, it listens for the first R2D transmission and determines the first transmission resource for sending message 1 based on the transmission resource of the first R2D transmission and the saved information configured by the second R2D transmission. For example, the second R2D transmission is used to configure all the information related to the first transmission resource. If the first device has not communicated with the second device for a long time due to factors such as power failure, it needs to re-access randomly when it needs to communicate with the second device again. Before communicating again, it receives the new second R2D transmission and listens for the first R2D transmission. The first device can determine the first transmission resource for sending message 1 based on the transmission resources of the first R2D transmission and the information related to the first transmission resource configured in the new second R2D transmission.

[0279] The aforementioned scheme for configuring the first transmission resource-related information in the second R2D transmission configuration can be combined with the scheme for the first transmission resource-related information predefined in the protocol.

[0280] In some implementations, when the first R2D transmission serves as reference information for determining the first transmission resource, the first R2D transmission can also be used to obtain synchronization information.

[0281] Example 2: The first R2D transmission is used to configure information related to the first transmission resource.

[0282] In some implementations, the first R2D transmission is used to configure information related to the first transmission resource. This can be understood as the first R2D transmission being used to configure information related to the first time domain resource and / or information related to the first frequency domain resource.

[0283] In some implementations, the first device receiving the first R2D transmission can be understood as follows: if the first device detects the first R2D transmission and the first R2D transmission is used to configure information related to the first transmission resource, then the first device receives the first R2D transmission.

[0284] In some implementations, the first R2D transmission is used to configure information related to the first transmission resource. This can be understood as the first R2D transmission being used to configure all the information related to the first transmission resource. Accordingly, based on the first R2D transmission, the entire content of the information related to the first transmission resource can be determined, thereby determining the first transmission resource.

[0285] In some other implementations, the first R2D transmission is used to configure information related to the first transmission resource, which can be understood as the part of the first R2D transmission used to configure information related to the first transmission resource.

[0286] In some implementations, the first R2D transmission is used to configure information related to the first transmission resource, and the remaining part of the information related to the first transmission resource can be predefined by the protocol. Accordingly, based on the first R2D transmission and the predefined information of the protocol, the entire content of the information related to the first transmission resource can be determined, and thus the first transmission resource can be determined.

[0287] It should be noted that the description of the information related to the first transmission resource in Embodiment 1 is also applicable to this embodiment, and will not be repeated here.

[0288] As mentioned above, the first R2D transmission can be one or more of four message types: paging message, message 2, message 4, and random access trigger message. In some implementations, if the first R2D transmission is used to configure information related to the first transmission resource, then the first R2D transmission can be the R2D transmission defined in Rel-19, that is, the first R2D transmission is at least one of the paging message, message 2, message 4, and random access trigger message defined in Rel-19. For example, the first R2D transmission is an A-IoT paging message or a random access trigger message. The A-IoT paging message or random access trigger message is exactly the same as that in Rel-19, that is, it does not distinguish the service type used for transmission by the first transmission resource. The first transmission resource is the transmission resource for random access messages of DO-A service and other services, or in other words, the first transmission resource is a configuration shared by DO-A service and DO-DTT / DT service, or in other words, the first transmission resource can be used for random access message transmission of DO-A service or random access message transmission of DO-DTT / DT service.

[0289] In some implementations, the first R2D transmission is used to indicate the service type for which the first transmission resource is used for transmission. For example, the first R2D transmission is an A-IoT paging message or a random access trigger message, which provides a service type message to indicate that the A-IoT paging message or random access trigger message is a first transmission resource for configuring DO-A service, or a first transmission resource for DO-DTT / DT service.

[0290] The scheme described above for the second R2D transmission indicating the service type used by the first transmission resource for transmission also applies to the first R2D transmission, and will not be elaborated here.

[0291] In other implementations, the first R2D transmission is at least one of the newly defined paging message, message 2, message 4, and random access trigger message. For example, the first R2D transmission differs from the paging message / message 2 / random access trigger message signaling in Rel-19. As another example, the R2D preamble or postamble of the first R2D transmission differs from that defined in Rel-19.

[0292] In some implementations, the first R2D transmission is at least one of a newly defined paging message, message 2, message 4, and random access trigger message. The first R2D transmission is a message used to configure information related to the first transmission resources of the DO-A service. In other words, the first transmission resources configured by the first R2D transmission are dedicated to the transmission of random access messages for the DO-A service; that is, the configuration of the first transmission resources for random access messages of the DO-A service and the DO-DTT / DT service is separate, and the first transmission resources configured by the first R2D transmission cannot be used simultaneously for both the DO-A service and the DTT / DT service. For example, the first R2D transmission is a DO-A paging message and / or a DO-A random access trigger message used to configure information related to the first transmission resources of the DO-A service.

[0293] In some implementations, the first R2D transmission is used to configure information related to the first transmission resource. The first device determines the first transmission resource based on the information configured in the first R2D transmission. For example, after the first device accesses the network, it receives the first R2D transmission and saves the information configured in the first R2D transmission. If it then has not communicated with the second device for a long time due to factors such as power failure, it needs to re-access randomly when it needs to communicate with the second device again. The first device determines the first transmission resource for sending message 1 based on the saved information configured in the first R2D transmission. As another example, the first R2D transmission is used to configure information related to the first transmission resource. If the first device has not accessed the network for a long time, it will lose synchronization with the network. When it needs to communicate with the second device again, it needs to re-access randomly. The first device receives a new first R2D transmission and determines the first transmission resource based on the information configured in the new first R2D transmission.

[0294] In some implementations, the first transmission resource is predefined by the protocol and configured by the first R2D transmission. The first device determines the first transmission resource based on information related to the first transmission resource in the first R2D transmission configuration and information related to the first transmission resource predefined by the protocol.

[0295] In some implementations, the first transmission resource includes a first time-domain resource. The first R2D transmission is used to configure some information related to the first time-domain resource, while another part of the information related to the first time-domain resource is predefined by the protocol. The first device determines the first time-domain resource based on the information related to the first time-domain resource configured by the first R2D transmission and the information related to the first time-domain resource predefined by the protocol. For example, the first R2D transmission is used to configure the starting reference point of the first time-domain resource, which indicates a specific time-domain location. The protocol predefines the duration and starting offset of the first time-domain resource. The first device can determine the first time-domain resource based on the starting reference point, the duration, and the starting offset of the first time-domain resource.

[0296] In some implementations, the first transmission resource includes a first time-domain resource and a first frequency-domain resource. The first R2D transmission is used to configure information related to the first time-domain resource. The information related to the first frequency-domain resource is predefined by the protocol. The first device determines the first transmission resource based on the information related to the first time-domain resource configured by the first R2D transmission and the information related to the first frequency-domain resource predefined by the protocol. For example, the protocol predefines the information related to the first frequency-domain resource, and the first R2D transmission configures the information related to the first time-domain resource. The information related to the first time-domain resource includes the start and end points of the first time-domain resource. The first device can determine the first frequency-domain resource based on the information related to the first frequency-domain resource predefined by the protocol and determine the first time-domain resource based on the information related to the first time-domain resource configured by the first R2D transmission.

[0297] In some implementations, the first transmission resource includes a first time-domain resource and a first time-domain resource. The first R2D transmission is used to configure information related to the first frequency-domain resource. The information related to the first time-domain resource is predefined by the protocol. The first device determines the first transmission resource based on the information related to the first frequency-domain resource configured by the first R2D transmission and the information related to the first time-domain resource predefined by the protocol.

[0298] The above section, in conjunction with Embodiments 1 and 2, introduced two implementation schemes related to the first R2D transmission. In some scenarios, the schemes of Embodiments 1 and 2 can be used independently. In other scenarios, the schemes of Embodiments 1 and 2 can be used in combination. The following section describes a scheme combining Embodiments 1 and 2.

[0299] In some implementations, the transmission resources of the first R2D transmission serve as reference information for determining the first transmission resources, and the first R2D transmission is used to configure information related to the first transmission resources.

[0300] In some implementations, the start or end of the time-domain resource of the first R2D transmission is used as the start reference point of the first time-domain resource. The first R2D transmission is used to configure the start offset and duration of the first time-domain resource. The first device can determine the first time-domain resource based on the start or end of the time-domain resource of the first R2D transmission, as well as the start offset and duration of the first time-domain resource configured by the first R2D transmission.

[0301] For example, the start of the time-domain resource of the first R2D transmission is used as the starting reference point of the first time-domain resource. The duration of the first transmission resource configured in the first R2D transmission is D, and the start offset of the first time-domain resource is T1. The first device can determine the first time-domain resource based on the start of the time-domain resource of the first R2D transmission, T1, and D. The start of the first time-domain resource is T1 after the start of the time-domain resource of the first R2D transmission, and the end of the first time-domain resource is T1+D after the start of the time-domain resource of the first R2D transmission.

[0302] In some implementations, the start or end of the time-domain resource of the first R2D transmission is used as the starting reference point of the first time-domain resource. The first R2D transmission is used to configure the start offset, period, and duration of the first time-domain resource. The first device can determine the first time-domain resource based on the start or end of the time-domain resource of the first R2D transmission, as well as the start offset, period, and duration of the first time-domain resource configured in the first R2D transmission.

[0303] For example, the first transmission resource includes n first time-domain resources. The period of the first R2D transmission configuration of the first time-domain resources is P. The start offset of the first first time-domain resource is T1. The duration of the first time-domain resource is D. The start of the time-domain resource of the first R2D transmission is used as the start reference point of the first first time-domain resource. The first device can determine the first time-domain resource based on the start, T1, P and D of the time-domain resource of the first R2D transmission. The start of the first first time-domain resource is T1 after the start of the time-domain resource of the first R2D transmission. The start of the nth first time-domain resource is (n-1)*P+T1 after the start of the time-domain resource of the first R2D transmission. The end of the first first time-domain resource is T1+D after the start of the time-domain resource of the first R2D transmission. The start of the nth first time-domain resource is (n-1)*P+T1+D after the start of the time-domain resource of the first R2D transmission.

[0304] In some implementations, the start or end of the time-domain resource of the first R2D transmission is used as the end reference point of the first time-domain resource. The first R2D transmission is used to configure the end offset, start offset, start reference point, and duration of the first time-domain resource. The first device can determine the first time-domain resource based on the start or end of the time-domain resource of the first R2D transmission, and the end offset, start offset, start reference point, and duration of the first time-domain resource configured in the first R2D transmission.

[0305] For example, the first transmission resource includes n first time-domain resources. The first R2D transmission configuration sets the end offset of the first first time-domain resource to T2, the start offset of the other first time-domain resources (excluding the first first time-domain resource) to T3, the end of the previous first time-domain resource as the start reference point of the next first time-domain resource, the duration of the first time-domain resource to D, and the start of the time-domain resource of the first R2D transmission as the end reference point of the first first time-domain resource. The first device can determine the first time-domain resource based on the start, T2, T3, and D of the time-domain resource of the first R2D transmission. The end of the first first time-domain resource is T2 after the start of the time-domain resource of the first R2D transmission, the start of the first first time-domain resource is T2-D after the start of the time-domain resource of the first R2D transmission, the start of the nth first time-domain resource is T3 after the end of the (n-1)th first time-domain resource, and the end of the nth first time-domain resource is T3+D after the end of the (n-1)th first time-domain resource.

[0306] In some implementations, the information related to the first transmission resource is predefined by the protocol and configured by the first R2D transmission. The first R2D transmission serves as reference information for determining the first transmission resource. The first device determines the first transmission resource based on the information related to the first transmission resource configured by the first R2D transmission, the information related to the first transmission resource predefined by the protocol, and the transmission resource of the first R2D transmission.

[0307] For example, the first R2D transmission configures the start offset of the first time domain resource as T1, the protocol predefines the duration of the first time domain resource as D, the start of the time domain resource of the first R2D transmission is the start reference point of the first time domain resource, the first device can determine the first time domain resource based on the start of the time domain resource of the first R2D transmission, D and T1, the start of the first time domain resource is T1 after the start of the time domain resource of the first R2D transmission, and the end of the first time domain resource is T1+D after the start of the time domain resource of the first R2D transmission.

[0308] In some implementations, the first R2D transmission is used to configure information related to the first transmission resource, and the transmission resource of the first R2D transmission serves as reference information for determining the first transmission resource. If the first device loses synchronization with the network after not accessing the network for a long time, and if the first device retains the information related to the first transmission resource configured in the previously received first R2D transmission, the first device can choose the transmission resource of the newly detected first R2D transmission as the reference information for determining the first transmission resource, and determine the first transmission resource based on the newly detected first R2D transmission resource and the saved information related to the first transmission resource.

[0309] In some other implementations, the first R2D transmission is used to configure information related to the first transmission resource, and the transmission resource of the first R2D transmission serves as reference information for determining the first transmission resource. If the first device loses synchronization with the network after not accessing the network for a long time, the first device may choose to receive the transmission resource of the new first R2D transmission as reference information for determining the first transmission resource, and determine the first transmission resource based on the transmission resource of the new first R2D transmission and the information related to the first transmission resource configured in the new first R2D transmission.

[0310] The previous section introduced the implementation method of the first R2D transmission. The following section introduces the solution related to the timeliness of information related to the first transmission resources.

[0311] In some implementations, the first device begins to use the information related to the first transmission resource to determine the first transmission resource after a first time period following receiving the information related to the first transmission resource. For example, the time when the first device receives the information related to the first transmission resource is Tr, the first time period is T4, the first R2D transmission is used to configure the information related to the first transmission resource, the first device receives the first R2D transmission at time Tr, and begins to apply the information related to the first transmission resource to determine the first transmission resource at time Tr+T4.

[0312] In some implementations, the aforementioned first time period can be predefined by the protocol.

[0313] In some implementations, the protocol predefines the first time period as a fixed value.

[0314] In some implementations, the protocol predefines the method for determining the first time period. For example, the second R2D transmission is used to configure information related to the first transmission resource, and the transmission resource of the first R2D transmission serves as reference information for determining the first transmission resource. The protocol predefines that after receiving the second R2D transmission, the first device begins to use the information related to the first transmission resource to determine the first transmission resource, starting from the start / end position of the time-domain resource of the first first R2D transmission. It can be understood that the first time period is the time-domain interval between the reception time of the second R2D transmission and the start / end position of the time-domain resource of the first first R2D transmission.

[0315] In some implementations, the first time period can be configured by the second device.

[0316] In some implementations, the first device stops using information related to the first transmission resource to determine the first transmission resource after a second time period following the first time period.

[0317] In some implementations, the aforementioned second time period can be predefined by the protocol.

[0318] In some implementations, the protocol predefines the second time period as a fixed value.

[0319] In some implementations, the protocol predefines the method for determining the second time period. For example, the second R2D transmission is used to configure information related to the first transmission resource, and the transmission resource of the first R2D transmission serves as reference information for determining the first transmission resource. The protocol predefines that after receiving the second R2D transmission, the first device starts using the information related to the first transmission resource to determine the first transmission resource, starting from the start / end position of the time domain resource of the first first R2D transmission received; and after receiving the second R2D transmission, the first device stops using the information related to the first transmission resource to determine the first transmission resource after receiving the Nth first R2D transmission. It can be understood that the first time period is the time domain interval between the reception time of the second R2D transmission and the start / end position of the time domain resource of the first first R2D transmission, and the second time period is the time domain interval between the start / end position of the time domain resource of the first first R2D transmission and the reception time of the Nth first R2D transmission.

[0320] In some implementations, the second time period can be configured by a second device.

[0321] In some implementations, the first time period and / or the second time period are in one or more of the following units: NR time unit; physical time; chip duration.

[0322] In some implementations, the first device receives instruction information, which instructs the deactivation of information related to the first transmission resource in order to stop using the information related to the first transmission resource.

[0323] In some implementations, the instruction information is sent from the second device to the first device.

[0324] In some implementations, the indication information is used to instruct the deactivation of information related to the first transmission resource in order to stop using the information related to the first transmission resource; the indication information may also be referred to as a "deactivation indication".

[0325] In some implementations, after receiving the instruction information, the first device stops using information related to the first transmission resource to determine the first transmission resource.

[0326] In some implementations, in response to a first condition, the first device does not use information related to the first transmission resource to determine the first transmission resource, or in other words, in response to a first condition, the first device stops using information related to the first transmission resource to determine the first transmission resource.

[0327] In some implementations, the first condition is that a resource conflict occurs in the random access message sent by the first device.

[0328] In some implementations, the first condition includes one or more of the following: the first device determines that the first transmission resource has failed; after the first device sends a random access message on the first transmission resource, it does not receive a response message for the random access message within a third time period.

[0329] In some implementations, the response to the random access message can be either message 2 or message B. For example, if the random access message is message 1, and the third time period is Tg, after the first device determines the first transmission resource, it sends message 1 on the first transmission resource. If message 2 is not received within the Tg time period after sending message 1, a resource conflict is considered to have occurred. As another example, if the random access message is message A, the first device sends message A on the first transmission resource. If message B is not received within the Tg time period after sending message A, a resource conflict is considered to have occurred.

[0330] In some implementations, the failure of the first device to determine the first transmission resource can be understood as the first device not being able to select a suitable first transmission resource to send a random access message.

[0331] In some implementations, after the first device stops using information related to the first transmission resource to determine the first transmission resource, the first device re-receives information related to the first transmission resource to determine the first transmission resource.

[0332] In some implementations, the information related to the first transmission resource that is re-received is carried by either the first R2D transmission or the second R2D transmission.

[0333] As described above, the second device can be a terminal device and / or a network device. In some implementations, the second device is a terminal device. The second device receives first information sent by the network device. The first information is used to determine a second transmission resource, which is the transmission resource of the first R2D transmission. Accordingly, upon receiving the first information, the second device can determine the second transmission resource based on the first information, and then send the first R2D transmission to the first device on the second transmission resource.

[0334] In some implementations, the first information is used to configure information related to the second transmission resource.

[0335] In some implementations, the second transmission resource includes at least a second time-domain resource and / or a second frequency-domain resource.

[0336] In some implementations, the first information includes at least information related to the second time-domain resources and / or information related to the second frequency-domain resources.

[0337] In some implementations, the second transmission resource includes a second time-domain resource, and the information related to the second transmission resource includes one or more of the following: the start or start offset of the second time-domain resource; the end or end offset of the second time-domain resource; the start reference point of the second time-domain resource; the end reference point of the second time-domain resource; the duration of the second time-domain resource; and the period of the second time-domain resource.

[0338] In some implementations, the starting offset of the second time-domain resource is used to indicate the time-domain interval between the start of the second time-domain resource and the starting reference point of the second time-domain resource.

[0339] In some implementations, the end offset of the second time-domain resource is used to indicate the time-domain interval between the end of the second time-domain resource and the end reference point of the second time-domain resource.

[0340] In some implementations, the first information is carried in one or more of the following: RRC message; media access control element (MAC CE); physical layer message.

[0341] In some implementations, the second transmission resource is determined based on the first information using one or more of the following methods: static configuration; semi-static configuration; dynamic configuration.

[0342] In some implementations, the second transmission resource is determined using static configuration based on the first information, in which case the first information can be carried in an RRC message.

[0343] In some implementations, the second transport resource is determined using a semi-static configuration based on the first information. In this case, the first information can be carried in an RRC message and activated or deactivated by a MAC CE and / or physical layer message.

[0344] In some implementations, the second transmission resource is determined by dynamic configuration based on the first information. In this case, the first information can be carried in an RRC message and the physical layer message indicates that the first information is used to send the first R2D transmission.

[0345] In some other implementations, the second transmission resource is determined by dynamic configuration based on the first information, in which case the first information can be carried in a physical layer message.

[0346] In some implementations, the second device is a terminal device, which receives second information sent by the network device. The second information is used to determine the first transmission resource and / or the transmission resource of the first R2D transmission.

[0347] In some implementations, the second information is used to indicate the resource pool to which the first transmission resource and / or the transmission resource of the first R2D transmission belong, and accordingly, the second device can determine the first transmission resource and / or the transmission resource of the first R2D transmission based on the resource pool.

[0348] In some implementations, the second information includes one or more of the following: the frequency domain start position of the resource pool; the frequency domain end position of the resource pool; the frequency domain size of the resource pool; the bandwidth of the resource pool; the frequency domain unit size of the resource pool; and time domain resource-related information of the resource pool.

[0349] In some implementations, the frequency domain size of the resource pool can be understood as the total amount of resources that the resource pool can allocate in the frequency domain, or the range of resources that the resource pool can allocate in the frequency domain.

[0350] In some implementations, the bandwidth of a resource pool can be understood as the total available spectrum bandwidth of the resource pool.

[0351] In some implementations, the frequency domain unit size of the resource pool can be understood as the smallest granularity or basic unit size of the frequency domain resource allocation in the resource pool.

[0352] In some implementations, the frequency domain units of a resource pool can be subcarriers and / or resource blocks.

[0353] In some implementations, the time-domain resource-related information of the resource pool may include one or more of the following: the time-domain start position of the resource pool; the time-domain end position of the resource pool; the time-domain size of the resource pool; and the time-domain unit size of the resource pool.

[0354] In some implementations, the temporal size of the resource pool can be understood as the total amount of resources that the resource pool can allocate in the temporal domain, or the range of resources that the resource pool can allocate in the temporal domain.

[0355] In some implementations, the temporal unit size of the resource pool can be understood as the smallest granularity or basic unit size of the temporal resource allocation in the resource pool.

[0356] In some implementations, the temporal unit of the resource pool can be one or more of the following: symbol, time slot, subframe, frame, chip.

[0357] In the embodiments of this application, any of the information mentioned above (e.g., the first information or the second information) or R2D transmission can be carried by one or more of the following message types: NR Positioning Protocol A (NRPPa) message, Long Term Evolution Positioning Protocol (LPP) message, Non-Access Stratum (NAS) message, Radio Resource Control (RRC) message, MAC CE, Downlink Control Information (DCI), Uplink Control Information (UCI), Physical Uplink Control Channel (PUCCH), Physical Uplink Shared Channel (PUSCH), Inter-node message, Xn interface message, F1 interface message, E1 interface message, NG interface message, core network service-based architecture message, or AI-specific message.

[0358] In the embodiments of this application, any of the information mentioned above can be carried by one or more of unicast messages, multicast messages, and broadcast messages.

[0359] The aforementioned unicast message can be understood as a one-to-one transmission of information, that is, a message sent from one sender to one receiver. In this case, the source transmits the unicast message through a unicast channel, and only terminal devices or network devices allocated the corresponding unicast resources can attempt to receive the unicast message. Unicast messages can also be referred to as dedicated signaling.

[0360] The multicast message mentioned above can be understood as a one-to-many transmission of information, that is, a message sent by one sender to multiple receivers. In this case, the source transmits the multicast message through the multicast channel. Terminal devices or network devices within the coverage area of ​​the multicast signal and that are members of the group can attempt to receive the multicast message. When a terminal device or network device joins a group, it will acquire the relevant resources of the multicast channel.

[0361] The aforementioned broadcast message can be understood as a pair of messages transmitted arbitrarily, that is, a message sent from one sender to any receiver. In this case, the source transmits the broadcast message through a broadcast channel, and any terminal device or network device within the coverage area of ​​the broadcast signal can attempt to receive the broadcast message.

[0362] In the embodiments of this application, the first device and / or the second device are not limited. For example, the first device is a terminal device and the second device is a network device. Another example is that the first device is a network device and the second device is a terminal device. Yet another example is that the first device is a first terminal device and the second device is a second terminal device. Yet another example is that the first device is a first network device and the second device is a second network device.

[0363] The aforementioned network equipment can be access network equipment, core network equipment, AI / ML model-related information management equipment, or operation administration and maintenance (OAM) equipment. For example, the access network equipment can be any of the following: gNB, centralized unit (CU), distributed unit (DU), centralized unit-control plane (CU-CP), or centralized unit-user plane (CU-UP).

[0364] For example, the core network equipment can be any of the following: location management function (LMF) network element, network slice selection function (NSSF) network element, authentication server function (AUSF) network element, unified data management (UDM) network element, access and mobility management function (AMF) network element, session management function (SMF) network element, policy control function (PCF) network element, user plane function (UPF) network element, sensing function (SF) network element, and network data analytics function (NWDAF) network element.

[0365] The above text combined Figures 1 to 12 The method embodiments of this application are described in detail below, in conjunction with... Figures 13 to 15 The present application provides a detailed description of the apparatus embodiments. It should be understood that the descriptions of the method embodiments correspond to the descriptions of the apparatus embodiments; therefore, any parts not described in detail can be found in the foregoing method embodiments.

[0366] Figure 13 This is a schematic diagram of a communication device according to an embodiment of this application, wherein the communication device is a first device. Figure 13 The communication device 1300 shown includes: a listening unit 1310.

[0367] The listening unit 1310 is used to listen to the first reader-to-device R2D transmission, the first R2D transmission is used to determine the first transmission resource, and the first transmission resource is used to transmit random access messages.

[0368] In some implementations, the transmission resources of the first R2D transmission are used as reference information for determining the first transmission resources.

[0369] In some implementations, before the first device listens to the first R2D transmission, the communication device further includes a receiving unit for receiving a second R2D transmission, the second R2D transmission being used to configure information related to the first transmission resource.

[0370] In some implementations, the second R2D transmission is also used to indicate one or more of the following: the message type of the first R2D transmission; the transmission resources of the first R2D transmission; and the service type for which the first transmission resources are used for transmission.

[0371] In some implementations, the communication device further includes a receiving unit for receiving the first R2D transmission, wherein the first R2D transmission is used to configure information related to the first transmission resource.

[0372] In some implementations, the information related to the first transmission resource is predefined by the protocol.

[0373] In some implementations, the first transmission resource includes a first time-domain resource, and the information related to the first transmission resource includes at least one of the following: the start or start offset of the first time-domain resource; the end or end offset of the first time-domain resource; the duration of the first time-domain resource; the start reference point of the first time-domain resource; the end reference point of the first time-domain resource; the period of the first time-domain resource; and the number of time-division multiplexed first time-domain resources.

[0374] In some implementations, the first transmission resource includes a first frequency domain resource, and the information related to the first transmission resource includes at least one of the following: the number of frequency-division multiplexed first frequency domain resources; the small frequency offset (SFS) parameter of the first frequency domain resource; the frequency shift of the first frequency domain resource; the reference point of the first frequency domain resource; the frequency band location of the first frequency domain resource; and the bandwidth of the first frequency domain resource.

[0375] In some implementations, the information related to the first transmission resource is associated with one or more of the following: the type of the first device; the bandwidth of the first device; and the modulation scheme of the first device.

[0376] In some implementations, the communication device further includes: a using unit, configured to, after a first time period following the receipt of the information related to the first transmission resource, begin using the information related to the first transmission resource to determine the first transmission resource.

[0377] In some implementations, the communication device further includes: the using unit is further configured to stop using information related to the first transmission resource to determine the first transmission resource after a second time period following the first time period.

[0378] In some implementations, the communication device further includes: a receiving unit, configured to re-receive information related to the first transmission resource to determine the first transmission resource after ceasing to use the information related to the first transmission resource to determine the first transmission resource; wherein the re-received information related to the first transmission resource is carried by the first R2D transmission or the second R2D transmission.

[0379] In some implementations, the communication device further includes a receiving unit for receiving indication information, the indication information being used to instruct the deactivation of the information related to the first transmission resource in order to stop using the information related to the first transmission resource.

[0380] In some implementations, the communication device further includes: a using unit, configured to, in response to a first condition, determine the first transmission resource without using information related to the first transmission resource; the first device re-receives information related to the first transmission resource; wherein the first condition includes one or more of the following: the first device determines that the first transmission resource has failed; the first device, after sending the random access message on the first transmission resource, does not receive a response message for the random access message within a third time period.

[0381] In some implementations, the first R2D transmission is one or more of the following message types: paging message; message 2; message 4; random access trigger message.

[0382] In some implementations, the first R2D transmission satisfies one or more of the following: the first R2D transmission is a specific sequence; the first R2D transmission includes all or part of a timing capture signal; the first R2D transmission includes at least two unidirectional transition edges.

[0383] In some implementations, the transmission method of the first R2D transmission includes one or more of the following: periodic transmission; non-periodic transmission; semi-persistent transmission.

[0384] In some implementations, the first R2D transmission is used for clock synchronization.

[0385] In some implementations, the second R2D transmission is one or more of the following message types: paging message; message 2; message 4; random access trigger message.

[0386] In some implementations, the random access message includes at least one of the following: random access identification information; service type information; device type information; and priority information.

[0387] In some implementations, the first R2D transmission is sent by a second device, where the first device is an A-IoT device and the second device is one or more of the following: a terminal device; a network device.

[0388] Figure 14 This is a schematic diagram of a communication device according to an embodiment of this application, wherein the communication device is a second device. Figure 14 The communication device 1400 shown includes: a transmitting unit 1410.

[0389] The sending unit 1410 is used to send a first reader-to-device R2D transmission to the first device, wherein the first R2D transmission is used to determine a first transmission resource, and the first transmission resource is used to transmit a random access message.

[0390] In some implementations, the transmission resources of the first R2D transmission are used as reference information for determining the first transmission resources.

[0391] In some implementations, before the second device sends the first R2D transmission, the communication device further includes: the sending unit 1410 is also configured to send a second R2D transmission to the first device, the second R2D transmission being used to configure information related to the first transmission resource.

[0392] In some implementations, the second R2D transmission is also used to indicate one or more of the following: the message type of the first R2D transmission; the transmission resources of the first R2D transmission; and the service type for which the first transmission resources are used for transmission.

[0393] In some implementations, the first R2D transmission is used to configure information related to the first transmission resource.

[0394] In some implementations, the information related to the first transmission resource is predefined by the protocol.

[0395] In some implementations, the first transmission resource includes a first time-domain resource, and the information related to the first transmission resource includes at least one of the following: the start or start offset of the first time-domain resource; the end or end offset of the first time-domain resource; the duration of the first time-domain resource; the start reference point of the first time-domain resource; the end reference point of the first time-domain resource; the period of the first time-domain resource; and the number of time-division multiplexed first time-domain resources.

[0396] In some implementations, the first transmission resource includes a first frequency domain resource, and the information related to the first transmission resource includes at least one of the following: the number of frequency-division multiplexed first frequency domain resources; the small frequency offset (SFS) parameter of the first frequency domain resource; the frequency shift of the first frequency domain resource; the reference point of the first frequency domain resource; the frequency band location of the first frequency domain resource; and the bandwidth of the first frequency domain resource.

[0397] In some implementations, the first R2D transmission is sent from the second device to the first device, and the information related to the first transmission resource is associated with one or more of the following: the type of the first device; the bandwidth of the first device; and the modulation scheme of the first device.

[0398] In some implementations, the communication device further includes: the sending unit 1410 is further configured to send sending indication information, the indication information being used to instruct the deactivation of the information related to the first transmission resource to stop using the information related to the first transmission resource.

[0399] In some implementations, the first R2D transmission is one or more of the following message types: paging message; message 2; message 4; random access trigger message.

[0400] In some implementations, the first R2D transmission satisfies one or more of the following: the first R2D transmission is a specific sequence; the first R2D transmission includes all or part of a timing capture signal; the first R2D transmission includes at least two unidirectional transition edges.

[0401] In some implementations, the transmission method of the first R2D transmission includes one or more of the following: periodic transmission; non-periodic transmission; semi-persistent transmission.

[0402] In some implementations, the first R2D transmission is used for clock synchronization.

[0403] In some implementations, the second R2D transmission is one or more of the following message types: paging message; message 2; message 4; random access trigger message.

[0404] In some implementations, the random access message includes at least one of the following: random access identification information; service type information; device type information; and priority information.

[0405] In some implementations, the first R2D transmission is sent from the second device to the first device, where the first device is an A-IoT device and the second device is one or more of the following: a terminal device; a network device.

[0406] In some implementations, the second device is a terminal device, and the communication device further includes: a receiving unit, configured to receive first information sent by the network device, the first information being used to determine a second transmission resource, the second transmission resource being the transmission resource of the first R2D transmission.

[0407] In some implementations, the first information is used to configure information related to the second transmission resource.

[0408] In some implementations, the second transmission resource includes a second time-domain resource, and the information related to the second transmission resource includes one or more of the following: the start or start offset of the second time-domain resource; the end or end offset of the second time-domain resource; the start reference point of the second time-domain resource; the end reference point of the second time-domain resource; the duration of the second time-domain resource; and the period of the second time-domain resource.

[0409] In some implementations, the first information is carried in one or more of the following: Radio Resource Control (RRC) messages; Media Access Control (MAC) control elements (CE); physical layer messages.

[0410] In some implementations, the second transmission resource is determined based on the first information using one or more of the following methods: static configuration; semi-static configuration; dynamic configuration.

[0411] In some implementations, the second device is a terminal device, and the communication device further includes: a receiving unit, configured to receive second information sent by the network device, the second information being used to determine the first transmission resource and / or the transmission resource of the first R2D transmission.

[0412] In some implementations, the second information is used to indicate the resource pool to which the first transmission resource and / or the transmission resource of the first R2D transmission belongs.

[0413] In some implementations, the second information includes one or more of the following: the frequency domain start position of the resource pool; the frequency domain end position of the resource pool; the frequency domain size of the resource pool; the bandwidth of the resource pool; the frequency domain unit size of the resource pool; and time domain resource-related information of the resource pool.

[0414] In an optional embodiment, the listening unit 1310 may be a transceiver 1530. The communication device 1300 may also include a processor 1510 and a memory 1520, specifically as follows: Figure 15 As shown.

[0415] In an optional embodiment, the transmitting unit 1410 may be a transceiver 1530. The communication device 1400 may also include a processor 1510 and a memory 1520, specifically as follows: Figure 15 As shown.

[0416] Figure 15 This is a schematic structural diagram of a communication device according to an embodiment of this application. Figure 15 The dashed lines indicate that the unit or module is optional. The device 1500 can be used to implement the methods described in the above method embodiments. The device 1500 can be a chip, a terminal device, or a network device.

[0417] Apparatus 1500 may include one or more processors 1510. The processor 1510 may support apparatus 1500 in implementing the methods described in the preceding method embodiments. The processor 1510 may be a general-purpose processor or a special-purpose processor. For example, the processor may be a central processing unit (CPU). Alternatively, the processor may be other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor or any conventional processor.

[0418] The apparatus 1500 may further include one or more memories 1520. The memories 1520 store a program that can be executed by the processor 1510, causing the processor 1510 to perform the methods described in the preceding method embodiments. The memories 1520 may be independent of the processor 1510 or integrated into the processor 1510.

[0419] The device 1500 may also include a transceiver 1530. The processor 1510 can communicate with other devices or chips via the transceiver 1530. For example, the processor 1510 can send and receive data with other devices or chips via the transceiver 1530.

[0420] This application also provides a computer-readable storage medium for storing a program. This computer-readable storage medium can be applied to a terminal or network device provided in this application, and the program causes a computer to execute the methods performed by the terminal or network device in various embodiments of this application.

[0421] This application also provides a computer program product. The computer program product includes a program. The computer program product can be applied to a terminal or network device provided in this application embodiment, and the program causes a computer to execute the methods performed by the terminal or network device in various embodiments of this application.

[0422] This application also provides a computer program. This computer program can be applied to the terminal or network device provided in this application, and the computer program causes the computer to execute the methods performed by the terminal or network device in various embodiments of this application.

[0423] It should be understood that the terms "system" and "network" in this application can be used interchangeably. Furthermore, the terminology used in this application is only for explaining specific embodiments of the application and is not intended to limit the application. The terms "first," "second," "third," and "fourth," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish different objects, not to describe a specific order. In addition, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.

[0424] In the embodiments of this application, the term "instruction" can be a direct instruction, an indirect instruction, or an indication of a relationship. For example, A instructing B can mean that A directly instructs B, such as B being able to obtain information through A; it can also mean that A indirectly instructs B, such as A instructing C, so B can obtain information through C; or it can mean that there is a relationship between A and B.

[0425] In the embodiments of this application, "B corresponding to A" means that B is associated with A, and B can be determined based on A. However, it should also be understood that determining B based on A does not mean that B is determined solely based on A; B can also be determined based on A and / or other information.

[0426] In the embodiments of this application, the term "correspondence" can indicate a direct or indirect correspondence between two things, or an association between two things, or a relationship such as instruction and being instructed, configuration and being configured.

[0427] In this application embodiment, "predefined" or "preconfigured" can be implemented by pre-storing corresponding codes, tables, or other means that can be used to indicate relevant information in the device (e.g., including terminal devices and network devices). This application does not limit the specific implementation method. For example, predefined can refer to what is defined in the protocol.

[0428] In this application embodiment, the "protocol" may refer to a standard protocol in the field of communication, such as the LTE protocol, the NR protocol, and related protocols applied to future communication systems. This application does not limit this.

[0429] In the embodiments of this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0430] In the various embodiments of this application, the order of the above-mentioned processes does not imply the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this application.

[0431] In the several embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection between apparatuses or units may be electrical, mechanical, or other forms.

[0432] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0433] In addition, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit.

[0434] In the above embodiments, implementation can be achieved entirely or partially through software, hardware, firmware, or any combination thereof. When implemented using software, it can be implemented entirely or partially in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, all or part of the processes or functions described in the embodiments of this application are generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, the computer instructions can be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via wired (e.g., coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means. The computer-readable storage medium can be any available medium that a computer can read or a data storage device such as a server or data center that integrates one or more available media. The available media may be magnetic media (e.g., floppy disks, hard disks, magnetic tapes), optical media (e.g., digital video discs, DVDs) or semiconductor media (e.g., solid-state disks, SSDs), etc.

[0435] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A method for wireless communication, characterized in that, include: The first device listens to the first reader-to-device R2D transmission, the first R2D transmission is used to determine the first transmission resource, the first transmission resource is used to transmit random access messages.

2. The method as described in claim 1, characterized in that, The transmission resources of the first R2D transmission serve as reference information for determining the first transmission resources.

3. The method as described in claim 2, characterized in that, Before the first device listens to the first R2D transmission, the method further includes: The first device receives a second R2D transmission, which is used to configure information related to the first transmission resource.

4. The method as described in claim 3, characterized in that, The second R2D transmission is also used to indicate one or more of the following: The message type transmitted in the first R2D; The transmission resources of the first R2D transmission; The first transmission resource is used to transmit the type of service.

5. The method as described in claim 1 or 2, characterized in that, The method further includes: The first device receives the first R2D transmission, which is used to configure information related to the first transmission resource.

6. The method according to any one of claims 1-5, characterized in that, The information related to the first transmission resource is predefined by the protocol.

7. The method according to any one of claims 1-6, characterized in that, The first transmission resource includes a first time-domain resource, and the information related to the first transmission resource includes at least one of the following: The start or start offset of the first time-domain resource; The end or end offset of the first time-domain resource; The duration of the first time-domain resource; The starting reference point of the first time-domain resource; The end reference point of the first time-domain resource; The period of the first time-domain resource; The number of the first time-domain resources that are time-division multiplexed.

8. The method according to any one of claims 1-7, characterized in that, The first transmission resource includes a first frequency domain resource, and the information related to the first transmission resource includes at least one of the following: The number of first frequency domain resources in frequency division multiplexing; The small frequency offset (SFS) parameter of the first frequency domain resource; The frequency shift of the first frequency domain resource; The reference point for the first frequency domain resource; The frequency band location of the first frequency domain resource; The bandwidth of the first frequency domain resource.

9. The method according to any one of claims 1-8, characterized in that, The information related to the first transmission resource is associated with one or more of the following: The type of the first device; The bandwidth of the first device; The modulation method of the first device.

10. The method according to any one of claims 1-9, characterized in that, The method further includes: After receiving the information related to the first transmission resource, the first device begins to use the information related to the first transmission resource to determine the first transmission resource after a first time period.

11. The method as described in claim 10, characterized in that, The method further includes: After a second time period following the first time period, the first device stops using information related to the first transmission resource to determine the first transmission resource.

12. The method as described in claim 11, characterized in that, The method further includes: After the first device stops using the information related to the first transmission resource to determine the first transmission resource, the first device re-receives the information related to the first transmission resource to determine the first transmission resource. The information related to the first transmission resource that is re-received is carried by the first R2D transmission or the second R2D transmission.

13. The method according to any one of claims 1-12, characterized in that, The method further includes: The first device receives an instruction message, which is used to instruct the deactivation of information related to the first transmission resource in order to stop using the information related to the first transmission resource.

14. The method according to any one of claims 1-13, characterized in that, The method further includes: In response to the first condition, the first device does not use information related to the first transmission resource to determine the first transmission resource; The first device re-receives the information related to the first transmission resource; The first condition includes one or more of the following: The first device determines that the first transmission resource has failed; After the first device sends the random access message on the first transmission resource, it does not receive a response message for the random access message within the third time period.

15. The method according to any one of claims 1-14, characterized in that, The first R2D transmission is one or more of the following message types: paging message; message 2; message 4; random access trigger message.

16. The method according to any one of claims 1-15, characterized in that, The first R2D transmission satisfies one or more of the following: The first R2D transmission is a specific sequence; The first R2D transmission includes all or part of the timing capture signal; The first R2D transmission includes at least two unidirectional transition edges.

17. The method according to any one of claims 1-16, characterized in that, The first R2D transmission method includes one or more of the following: periodic transmission; non-periodic transmission; semi-persistent transmission.

18. The method according to any one of claims 1-17, characterized in that, The first R2D transmission is used for clock synchronization.

19. The method as described in claim 3 or 4, characterized in that, The second R2D transmission is one or more of the following message types: paging message; message 2; message 4; random access trigger message.

20. The method according to any one of claims 1-19, characterized in that, The random access message contains at least one of the following: Random access identification information; Business type information; Equipment type information; Priority information.

21. The method according to any one of claims 1-20, characterized in that, The first R2D transmission is sent by the second device, which is an A-IoT device, and the second device is one or more of the following: a terminal device; a network device.

22. A method for wireless communication, characterized in that, include: The second device sends a first reader to the device R2D transmission, the first R2D transmission being used to determine a first transmission resource, the first transmission resource being used to transmit random access messages.

23. The method as described in claim 22, characterized in that, The transmission resources of the first R2D transmission serve as reference information for determining the first transmission resources.

24. The method as described in claim 23, characterized in that, Before the second device sends the first R2D transmission, the method further includes: The second device sends a second R2D transmission, which is used to configure information related to the first transmission resource.

25. The method as described in claim 24, characterized in that, The second R2D transmission is also used to indicate one or more of the following: The message type transmitted in the first R2D; The transmission resources of the first R2D transmission; The first transmission resource is used to transmit the type of service.

26. The method as described in claim 22 or 23, characterized in that, The first R2D transmission is used to configure information related to the first transmission resource.

27. The method according to any one of claims 22-26, characterized in that, The information related to the first transmission resource is predefined by the protocol.

28. The method according to any one of claims 22-27, characterized in that, The first transmission resource includes a first time-domain resource, and the information related to the first transmission resource includes at least one of the following: The start or start offset of the first time-domain resource; The end or end offset of the first time-domain resource; The duration of the first time-domain resource; The starting reference point of the first time-domain resource; The end reference point of the first time-domain resource; The period of the first time-domain resource; The number of the first time-domain resources that are time-division multiplexed.

29. The method according to any one of claims 22-28, characterized in that, The first transmission resource includes a first frequency domain resource, and the information related to the first transmission resource includes at least one of the following: The number of first frequency domain resources in frequency division multiplexing; The small frequency offset (SFS) parameter of the first frequency domain resource; The frequency shift of the first frequency domain resource; The reference point for the first frequency domain resource; The frequency band location of the first frequency domain resource; The bandwidth of the first frequency domain resource.

30. The method according to any one of claims 22-29, characterized in that, The first R2D transmission is sent from the second device to the first device, and the information related to the first transmission resource is associated with one or more of the following: The type of the first device; The bandwidth of the first device; The modulation method of the first device.

31. The method according to any one of claims 22-30, characterized in that, The method further includes: The second device sends an instruction message, which is used to instruct the deactivation of the information related to the first transmission resource in order to stop using the information related to the first transmission resource.

32. The method according to any one of claims 22-31, characterized in that, The first R2D transmission is one or more of the following message types: paging message; message 2; message 4; random access trigger message.

33. The method according to any one of claims 22-32, characterized in that, The first R2D transmission satisfies one or more of the following: The first R2D transmission is a specific sequence; The first R2D transmission includes all or part of the timing capture signal; The first R2D transmission includes at least two unidirectional transition edges.

34. The method according to any one of claims 22-33, characterized in that, The first R2D transmission method includes one or more of the following: periodic transmission; non-periodic transmission; semi-persistent transmission.

35. The method according to any one of claims 22-34, characterized in that, The first R2D transmission is used for clock synchronization.

36. The method as described in claim 24 or 25, characterized in that, The second R2D transmission is one or more of the following message types: paging message; message 2; message 4; random access trigger message.

37. The method according to any one of claims 22-36, characterized in that, The random access message contains at least one of the following: Random access identification information; Business type information; Equipment type information; Priority information.

38. The method according to any one of claims 22-37, characterized in that, The first R2D transmission is sent from the second device to the first device. The first device is an A-IoT device, and the second device is one or more of the following: a terminal device; a network device.

39. The method according to any one of claims 22-38, characterized in that, The second device is a terminal device, and the method further includes: The second device receives first information sent by the network device, the first information being used to determine a second transmission resource, the second transmission resource being the transmission resource of the first R2D transmission.

40. The method as described in claim 39, characterized in that, The first information is used to configure information related to the second transmission resource.

41. The method as described in claim 40, characterized in that, The second transmission resource includes a second time-domain resource, and the information related to the second transmission resource includes one or more of the following: The start or start offset of the second time-domain resource; The end or end offset of the second time-domain resource; The starting reference point of the second time-domain resource; The end reference point of the second time-domain resource; The duration of the second time-domain resource; The period of the second time domain resource.

42. The method according to any one of claims 39-41, characterized in that, The first information is carried in one or more of the following: Radio Resource Control (RRC) messages; Media Access Control (MAC) control elements (CE); physical layer messages.

43. The method as described in claim 42, characterized in that, The second transmission resource is determined based on the first information using one or more of the following methods: static configuration; semi-static configuration; dynamic configuration.

44. The method according to any one of claims 22-38, characterized in that, The second device is a terminal device, and the method further includes: The second device receives second information sent by the network device, the second information being used to determine the first transmission resource and / or the transmission resource of the first R2D transmission.

45. The method as described in claim 44, characterized in that, The second information is used to indicate the resource pool to which the first transmission resource and / or the transmission resource of the first R2D transmission belong.

46. ​​The method as described in claim 45, characterized in that, The second information includes one or more of the following: The frequency domain starting position of the resource pool; The frequency domain end position of the resource pool; The frequency domain size of the resource pool; The bandwidth size of the resource pool; The frequency domain unit size of the resource pool; The time-domain resource-related information of the resource pool.

47. A communication device, characterized in that, The communication device is a first device, and the communication device includes: The listening unit is used to listen to the first reader-to-device R2D transmission, the first R2D transmission is used to determine the first transmission resource, and the first transmission resource is used to transmit random access messages.

48. The communication device as described in claim 47, characterized in that, The transmission resources of the first R2D transmission serve as reference information for determining the first transmission resources.

49. The communication device as described in claim 48, characterized in that, Before the first device listens to the first R2D transmission, the communication device further includes: The receiving unit is configured to receive a second R2D transmission, which is used to configure information related to the first transmission resource.

50. The communication device as described in claim 49, characterized in that, The second R2D transmission is also used to indicate one or more of the following: The message type transmitted in the first R2D; The transmission resources of the first R2D transmission; The first transmission resource is used to transmit the type of service.

51. The communication device as described in claim 47 or 48, characterized in that, The communication device also includes: The receiving unit is configured to receive the first R2D transmission, which is used to configure information related to the first transmission resource.

52. The communication device as described in any one of claims 47-51, characterized in that, The information related to the first transmission resource is predefined by the protocol.

53. The communication device as described in any one of claims 47-52, characterized in that, The first transmission resource includes a first time-domain resource, and the information related to the first transmission resource includes at least one of the following: The start or start offset of the first time-domain resource; The end or end offset of the first time-domain resource; The duration of the first time-domain resource; The starting reference point of the first time-domain resource; The end reference point of the first time-domain resource; The period of the first time-domain resource; The number of the first time-domain resources that are time-division multiplexed.

54. The communication device as described in any one of claims 47-53, characterized in that, The first transmission resource includes a first frequency domain resource, and the information related to the first transmission resource includes at least one of the following: The number of first frequency domain resources in frequency division multiplexing; The small frequency offset (SFS) parameter of the first frequency domain resource; The frequency shift of the first frequency domain resource; The reference point for the first frequency domain resource; The frequency band location of the first frequency domain resource; The bandwidth of the first frequency domain resource.

55. The communication device as described in any one of claims 47-54, characterized in that, The information related to the first transmission resource is associated with one or more of the following: The type of the first device; The bandwidth of the first device; The modulation method of the first device.

56. The communication device as described in any one of claims 47-55, characterized in that, The communication device also includes: The unit is configured to, after receiving the information related to the first transmission resource, begin using the information related to the first transmission resource to determine the first transmission resource after a first time period.

57. The communication device as described in claim 56, characterized in that, The communication device also includes: The unit is also configured to stop using information related to the first transmission resource to determine the first transmission resource after a second time period following the first time period.

58. The communication device as described in claim 57, characterized in that, The communication device also includes: The receiving unit is configured to receive the information related to the first transmission resource again to determine the first transmission resource after stopping the use of the information related to the first transmission resource to determine the first transmission resource; The information related to the first transmission resource that is re-received is carried by the first R2D transmission or the second R2D transmission.

59. The communication device as described in any one of claims 47-58, characterized in that, The communication device also includes: A receiving unit is configured to receive indication information, the indication information being used to instruct the deactivation of information related to the first transmission resource in order to stop using the information related to the first transmission resource.

60. The communication device as described in any one of claims 47-59, characterized in that, The communication device also includes: The unit is configured to determine the first transmission resource without using information related to the first transmission resource in response to a first condition. The first device re-receives the information related to the first transmission resource; The first condition includes one or more of the following: The first device determines that the first transmission resource has failed; After the first device sends the random access message on the first transmission resource, it does not receive a response message for the random access message within the third time period.

61. The communication device as described in any one of claims 47-60, characterized in that, The first R2D transmission is one or more of the following message types: paging message; message 2; message 4; random access trigger message.

62. The communication device according to any one of claims 47-61, characterized in that, The first R2D transmission satisfies one or more of the following: The first R2D transmission is a specific sequence; The first R2D transmission includes all or part of the timing capture signal; The first R2D transmission includes at least two unidirectional transition edges.

63. The communication device as described in any one of claims 47-62, characterized in that, The first R2D transmission method includes one or more of the following: periodic transmission; non-periodic transmission; semi-persistent transmission.

64. The communication device as described in any one of claims 47-63, characterized in that, The first R2D transmission is used for clock synchronization.

65. The communication device as described in claim 48 or 50, characterized in that, The second R2D transmission is one or more of the following message types: paging message; message 2; message 4; random access trigger message.

66. The communication device as described in any one of claims 47-65, characterized in that, The random access message contains at least one of the following: Random access identification information; Business type information; Equipment type information; Priority information.

67. The communication device as described in any one of claims 47-66, characterized in that, The first R2D transmission is sent by the second device, which is an A-IoT device, and the second device is one or more of the following: a terminal device; a network device.

68. A communication device, characterized in that, The communication device is a second device, and the communication device includes: The sending unit is used to send a first reader to a device R2D transmission, the first R2D transmission being used to determine a first transmission resource, the first transmission resource being used to transmit a random access message.

69. The communication device as described in claim 68, characterized in that, The transmission resources of the first R2D transmission serve as reference information for determining the first transmission resources.

70. The communication device as described in claim 69, characterized in that, Before the second device sends the first R2D transmission, the communication device further includes: The sending unit is also used to send a second R2D transmission, which is used to configure information related to the first transmission resource.

71. The communication device as described in claim 70, characterized in that, The second R2D transmission is also used to indicate one or more of the following: The message type transmitted in the first R2D; The transmission resources of the first R2D transmission; The first transmission resource is used to transmit the type of service.

72. The communication device as described in claim 68 or 69, characterized in that, The first R2D transmission is used to configure information related to the first transmission resource.

73. The communication device as described in any one of claims 68-72, characterized in that, The information related to the first transmission resource is predefined by the protocol.

74. The communication device as described in any one of claims 68-73, characterized in that, The first transmission resource includes a first time-domain resource, and the information related to the first transmission resource includes at least one of the following: The start or start offset of the first time-domain resource; The end or end offset of the first time-domain resource; The duration of the first time-domain resource; The starting reference point of the first time-domain resource; The end reference point of the first time-domain resource; The period of the first time-domain resource; The number of the first time-domain resources that are time-division multiplexed.

75. The communication device as described in any one of claims 68-74, characterized in that, The first transmission resource includes a first frequency domain resource, and the information related to the first transmission resource includes at least one of the following: The number of first frequency domain resources in frequency division multiplexing; The small frequency offset (SFS) parameter of the first frequency domain resource; The frequency shift of the first frequency domain resource; The reference point for the first frequency domain resource; The frequency band location of the first frequency domain resource; The bandwidth of the first frequency domain resource.

76. The communication device as described in any one of claims 68-75, characterized in that, The first R2D transmission is sent from the second device to the first device, and the information related to the first transmission resource is associated with one or more of the following: The type of the first device; The bandwidth of the first device; The modulation method of the first device.

77. The communication device as described in any one of claims 68-76, characterized in that, The communication device also includes: The sending unit is also configured to send indication information, which is used to instruct the deactivation of the information related to the first transmission resource in order to stop using the information related to the first transmission resource.

78. The communication device as described in any one of claims 68-77, characterized in that, The first R2D transmission is one or more of the following message types: paging message; message 2; message 4; random access trigger message.

79. The communication device as described in any one of claims 68-78, characterized in that, The first R2D transmission satisfies one or more of the following: The first R2D transmission is a specific sequence; The first R2D transmission includes all or part of the timing capture signal; The first R2D transmission includes at least two unidirectional transition edges.

80. The communication device as described in any one of claims 68-79, characterized in that, The first R2D transmission method includes one or more of the following: periodic transmission; non-periodic transmission; semi-persistent transmission.

81. The communication device as described in any one of claims 68-80, characterized in that, The first R2D transmission is used for clock synchronization.

82. The communication device as described in claim 70 or 71, characterized in that, The second R2D transmission is one or more of the following message types: paging message; message 2; message 4; random access trigger message.

83. The communication device as described in any one of claims 68-82, characterized in that, The random access message contains at least one of the following: Random access identification information; Business type information; Equipment type information; Priority information.

84. The communication device as described in any one of claims 68-83, characterized in that, The first R2D transmission is sent from the second device to the first device. The first device is an A-IoT device, and the second device is one or more of the following: a terminal device; a network device.

85. The communication device as described in any one of claims 68-84, characterized in that, The second device is a terminal device, and the communication device further includes: The receiving unit is configured to receive first information sent by the network device, the first information being used to determine a second transmission resource, the second transmission resource being the transmission resource of the first R2D transmission.

86. The communication device as described in claim 85, characterized in that, The first information is used to configure information related to the second transmission resource.

87. The communication device as described in claim 86, characterized in that, The second transmission resource includes a second time-domain resource, and the information related to the second transmission resource includes one or more of the following: The start or start offset of the second time-domain resource; The end or end offset of the second time-domain resource; The starting reference point of the second time-domain resource; The end reference point of the second time-domain resource; The duration of the second time-domain resource; The period of the second time domain resource.

88. The communication device as described in any one of claims 85-87, characterized in that, The first information is carried in one or more of the following: Radio Resource Control (RRC) messages; Media Access Control (MAC) control elements (CE); physical layer messages.

89. The communication device as described in claim 88, characterized in that, The second transmission resource is determined based on the first information using one or more of the following methods: static configuration; semi-static configuration; dynamic configuration.

90. The communication device as described in any one of claims 68-84, characterized in that, The second device is a terminal device, and the communication device further includes: A receiving unit is configured to receive second information sent by a network device, the second information being used to determine the first transmission resource and / or the transmission resource of the first R2D transmission.

91. The communication device as described in claim 90, characterized in that, The second information is used to indicate the resource pool to which the first transmission resource and / or the transmission resource of the first R2D transmission belong.

92. The communication device as described in claim 91, characterized in that, The second information includes one or more of the following: The frequency domain starting position of the resource pool; The frequency domain end position of the resource pool; The frequency domain size of the resource pool; The bandwidth size of the resource pool; The frequency domain unit size of the resource pool; The time-domain resource-related information of the resource pool.

93. A communication device, characterized in that, The device includes a transceiver, a memory, and a processor. The memory stores a program, and the processor invokes the program in the memory and controls the transceiver to receive or transmit signals so that the communication device performs the method as described in any one of claims 1-21.

94. A communication device, characterized in that, The device includes a transceiver, a memory, and a processor. The memory stores a program, and the processor invokes the program in the memory and controls the transceiver to receive or transmit signals so that the communication device performs the method as described in any one of claims 22-46.

95. An apparatus, characterized in that, Includes a processor for calling a program from memory to cause the device to perform the method as described in any one of claims 1-46.

96. A chip, characterized in that, Includes a processor for calling a program from memory, causing a device on which the chip is mounted to perform the method as described in any one of claims 1-46.

97. A computer-readable storage medium, characterized in that, It contains a program that causes a computer to perform the method as described in any one of claims 1-46.

98. A computer program product, characterized in that, Includes a program that causes a computer to perform the method as described in any one of claims 1-46.

99. A computer program, characterized in that, The computer program causes the computer to perform the method as described in any one of claims 1-46.

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