Access resource determination method and apparatus, access resource indication method and apparatus, and device and storage medium

Abstract

An access resource determination method and apparatus, an access resource indication method and apparatus, and a device and a storage medium, which relate to the technical field of communications. An access resource determination method comprises: a second communication device sending first signaling to a first communication device, wherein the first signaling is used for indicating a resource corresponding to a first access mechanism and / or a resource corresponding to a second access mechanism (1110); and on the basis of the first signaling sent by the second communication device, the first communication device determining the resource corresponding to the first access mechanism and / or the resource corresponding to the second access mechanism (1120). The present application designs a solution in which a first communication device determines, on the basis of an indication from a second communication device, a resource corresponding to an access mechanism, thereby ensuring that an A-IOT device uses a corresponding access resource when using a certain access mechanism, and thus ensuring the reliability of random access transmission.

Description

Method and device for determining access resource, method and device for indicating access resource, and storage medium TECHNICAL FIELD

[0001] Embodiments of the present application relate to the field of communication technology, in particular to a method and device for determining access resource, a method and device for indicating access resource, and a storage medium. BACKGROUND

[0002] In recent years, zero-power devices are increasingly widely used. Zero-power Internet of Things can also be referred to as Ambient power enabled IoT, abbreviated as Ambient IoT. Ambient IoT device means an IOT device that is driven by various environmental energies (such as wireless radio frequency energy, light energy, solar energy, thermal energy, mechanical energy, and various environmental energies).

[0003] For A-IOT devices, how to access still needs further discussion and research.

[0004] SUMMARY

[0005] Embodiments of the present application provide a method and device for determining access resource, a method and device for indicating access resource, and a storage medium. The technical solutions provided by embodiments of the present application are as follows.

[0006] According to an aspect of embodiments of the present application, a method for determining access resource is provided, the method is executed by a first communication device, and the method comprises:

[0007] determining resources corresponding to a first access mechanism and / or a second access mechanism according to first signaling sent by a second communication device, wherein the first access mechanism and the second access mechanism are two different access mechanisms.

[0008] According to an aspect of embodiments of the present application, a method for indicating access resource is provided, the method is executed by a second communication device, and the method comprises:

[0009] sending first signaling to a first communication device, the first signaling being used to indicate resources corresponding to a first access mechanism and / or resources corresponding to a second access mechanism, wherein the first access mechanism and the second access mechanism are two different access mechanisms.

[0010] According to an aspect of embodiments of the present application, a device for determining access resource is provided, the device comprises:

[0011] a processing module configured to determine resources corresponding to a first access mechanism and / or a second access mechanism according to first signaling sent by a second communication device, wherein the first access mechanism and the second access mechanism are two different access mechanisms.

[0012] According to an aspect of the embodiments of the present application, an indication device of access resource is provided, the device comprises:

[0013] The sending module is configured to send first signaling to the first communication device, the first signaling is used to indicate the resource corresponding to the first access mechanism and / or the resource corresponding to the second access mechanism, wherein the first access mechanism and the second access mechanism are two different access mechanisms.

[0014] According to an aspect of the embodiments of the present application, a communication device is provided, the communication device comprises a processor and a memory, the memory stores a computer program, and the processor executes the computer program to implement the determination method of access resource executed by the first communication device or the indication method of access resource executed by the second communication device.

[0015] According to an aspect of the embodiments of the present application, a computer readable storage medium is provided, the storage medium stores a computer program, and the computer program is used to be executed by a processor to implement the determination method of access resource executed by the first communication device or the indication method of access resource executed by the second communication device.

[0016] According to an aspect of the embodiments of the present application, a chip is provided, the chip comprises a programmable logic circuit and / or program instructions, and when the chip is running, the chip is used to implement the determination method of access resource executed by the first communication device or the indication method of access resource executed by the second communication device.

[0017] According to an aspect of the embodiments of the present application, a computer program product is provided, the computer program product comprises computer instructions, the computer instructions are stored in a computer readable storage medium, and a processor reads and executes the computer instructions from the computer readable storage medium to implement the determination method of access resource executed by the first communication device or the indication method of access resource executed by the second communication device.

[0018] The technical scheme provided by the embodiments of the present application can include the following beneficial effects:

[0019] The technical scheme provided by the embodiments of the present application designs the scheme that the first communication device determines the resource corresponding to the access mechanism according to the indication of the second communication device, guarantees that the A-IOT device uses the corresponding access resource when using a certain access mechanism, and guarantees the reliability of random access transmission. BRIEF DESCRIPTION OF DRAWINGS

[0020] Fig. 1 is a schematic diagram of a network architecture provided by an embodiment of the present application;

[0021] FIG. 2 is a schematic diagram of a basic structure of a zero-power communication system according to an embodiment of the present application;

[0022] FIG. 3 is a schematic diagram of a principle of RF energy harvesting according to an embodiment of the present application;

[0023] FIG. 4 is a schematic diagram of a principle of backscatter communication according to an embodiment of the present application;

[0024] FIG. 5 is a schematic diagram of a structure of a resistance load modulation circuit according to an embodiment of the present application;

[0025] FIG. 6 is a schematic diagram of two A-IOT deployment scenarios according to an embodiment of the present application;

[0026] FIG. 7 is a schematic diagram of a mechanism of inventory taking in an RFID system according to an embodiment of the present application;

[0027] FIG. 8 is a schematic diagram of four-step RACH and two-step RACH in NR Uu according to an embodiment of the present application;

[0028] FIG. 9 is a schematic diagram of four-step and two-step access mechanisms in an A-IOT system according to an embodiment of the present application;

[0029] FIG. 10 is a schematic diagram of frame structure design of R2D transmission and D2R transmission according to an embodiment of the present application;

[0030] FIG. 11 is a flowchart of a method for indicating and determining access resources according to an embodiment of the present application;

[0031] FIG. 12 is a schematic diagram of access of an A-IOT device according to an embodiment of the present application;

[0032] FIG. 13 is a schematic diagram of access of an A-IOT device according to another embodiment of the present application;

[0033] FIG. 14 is a schematic diagram of access of an A-IOT device according to another embodiment of the present application;

[0034] FIG. 15 is a block diagram of a device for determining access resources according to an embodiment of the present application;

[0035] FIG. 16 is a block diagram of a device for indicating access resources according to an embodiment of the present application;

[0036] FIG. 17 is a schematic diagram of a structure of a communication device according to an embodiment of the present application. DETAILED DESCRIPTION

[0037] To make the objectives, technical solutions and advantages of the present application clearer, the embodiments of the present application will be further described in detail below with reference to the drawings.

[0038] The network architecture and service scenarios described in the embodiments of the present application are used to more clearly illustrate the technical solutions of the embodiments of the present application, and do not constitute a limitation on the technical solutions provided by the embodiments of the present application. Those skilled in the art can know that, with the evolution of network architecture and the emergence of new service scenarios, the technical solutions provided by the embodiments of the present application are also applicable to similar technical problems.

[0039] The technical solutions of the embodiments of the present application can be applied to various communication systems, such as Global System of Mobile communication (GSM) system, Code Division Multiple Access (CDMA) system, Wideband Code Division Multiple Access (WCDMA) system, General Packet Radio Service (GPRS), Long Term Evolution (LTE) system, Advanced long term evolution (LTE-A) system, New Radio (NR) system, evolved system of NR system, LTE-based access to unlicensed spectrum (LTE-U) system, NR-based access to unlicensed spectrum (NR-U) system, Non-Terrestrial Networks (NTN) system, Universal Mobile Telecommunication System (UMTS), Wireless Local Area Networks (WLAN), Wireless Fidelity (WiFi), 5th-Generation (5G) system, B5G (Beyound 5G) system, 6th-Generation (6G) system or other communication systems, etc.

[0040] Generally, a conventional communication system supports a limited number of connections and is easy to implement. However, with the development of communication technology, a mobile communication system will not only support conventional communication, but also support, for example, Device to Device (D2D) communication, Machine to Machine (M2M) communication, Machine Type Communication (MTC), Vehicle to Vehicle (V2V) communication, or Vehicle to everything (V2X) communication, and the like. Embodiments of the present application can also be applied to these communication systems.

[0041] The communication system in the embodiments of the present application can be applied to a carrier aggregation (CA) scenario, a dual connectivity (DC) scenario, and a standalone (SA) network deployment scenario.

[0042] The communication system in the embodiments of the present application can be applied to unlicensed spectrum, which can also be considered as shared spectrum. Alternatively, the communication system in the embodiments of the present application can also be applied to licensed spectrum, which can also be considered as non-shared spectrum.

[0043] The embodiments of the present application can be applied to a non-terrestrial network (NTN) system and a terrestrial network (TN) system. The NTN generally adopts a satellite communication mode to provide communication services to ground users. The NTN system currently includes an NR-NTN and an IoT-NTN system, and other NTN systems can be included in the future.

[0044] Please refer to FIG. 1, which shows a schematic diagram of a network architecture 100 provided by an embodiment of the present application. The network architecture 100 can include a terminal device 10, an access network device 20, and a core network element 30.

[0045] The terminal device 10 can refer to a UE (User Equipment), an access terminal, a subscriber unit, a subscriber station, a mobile station, a mobile, a remote station, a remote terminal, a mobile device, a wireless communication device, a user agent, or a user equipment. In some embodiments, the terminal device 10 can also be a cellular phone, a cordless phone, a SIP (Session Initiation Protocol) phone, a WLL (Wireless Local Loop) station, a PDA (Personal Digital Assistant), a handheld device with wireless communication function, a computing device, or other processing device connected to a wireless modem, an in-vehicle device, a wearable device, a terminal device in a 5GS (5th Generation System), or a terminal device in a future evolved PLMN (Public Land Mobile Network), etc., and the embodiments of the present application are not limited thereto. For the convenience of description, the above-mentioned devices are collectively referred to as terminal devices. The number of terminal devices 10 is usually multiple, and one or more terminal devices 10 can be distributed in a cell managed by each access network device 20. The terminal device can also be simply referred to as a terminal or a UE, and those skilled in the art can understand its meaning.

[0046] The access network device 20 is a device deployed in an access network to provide wireless communication functions for the terminal device 10. The access network device 20 can include various forms of macro base stations, micro base stations, relay stations, access points, and the like. In systems using different wireless access technologies, the names of devices with access network device functions can be different, for example, in a 5G NR system, it is called gNodeB or gNB. As communication technology evolves, the name of the "access network device" may change. For ease of description, in the embodiments of the present application, the above-mentioned devices that provide wireless communication functions for the terminal device 10 are collectively referred to as access network devices. In some embodiments, through the access network device 20, a communication relationship can be established between the terminal device 10 and the core network element 30. Illustratively, in the LTE (Long Term Evolution) system, the access network device 20 can be an EUTRAN (Evolved Universal Terrestrial Radio Access Network) or one or more eNodeBs in the EUTRAN; in the 5G NR system, the access network device 20 can be a RAN (Radio Access Network) or one or more gNBs in the RAN. In the embodiments of the present application, the "network device" refers to the access network device 20, such as a base station, unless otherwise specified.

[0047] The core network element 30 is a network element deployed in the core network, and the main functions of the core network element 30 are to provide user connection, manage users, and complete bearer for services, and provide an interface to external networks as a bearer network. For example, the core network element in the 5G NR system can include AMF (Access and Mobility Management Function) entities, UPF (User Plane Function) entities, and SMF (Session Management Function) entities.

[0048] In some embodiments, the access network device 20 and the core network element 30 communicate with each other through some air interface technology, such as the NG interface in the 5G NR system. The access network device 20 and the terminal device 10 communicate with each other through some air interface technology, such as the Uu interface.

[0049] The "5G NR system" in the embodiments of the present application can also be referred to as a 5G system or an NR system, but those skilled in the art can understand its meaning. The technical solutions described in the embodiments of the present application can be applicable to the LTE system, and can also be applicable to the 5G NR system, and can also be applicable to the subsequent evolution system (such as the B5G (Beyound 5G) system, the 6G system (6th Generation System, the sixth generation mobile communication system)) of the 5G NR system, and can also be applicable to other communication systems such as the NB-IoT (Narrow Band Internet of Things, Narrow Band Internet of Things) system, and the like, and the present application does not limit this.

[0050] In the embodiments of the present application, the network device can provide services for a cell, and a terminal device communicates with the network device through a transmission resource (for example, a frequency domain resource, or a spectrum resource) on a carrier used by the cell. The cell can be a cell corresponding to the network device (for example, a base station), and the cell can belong to a macro base station or a base station corresponding to a small cell (Small cell). The small cell can include a metro cell, a micro cell, a pico cell, a femto cell, and the like. These small cells have the characteristics of small coverage and low transmit power, and are suitable for providing high-speed data transmission services.

[0051] Before introducing the technical solutions of the present application, the related technologies involved in the present application are introduced and explained. The following related technologies can be combined with the technical solutions of the embodiments of the present application in any way, and all belong to the protection scope of the embodiments of the present application. The embodiments of the present application include at least part of the following contents.

[0052] 1. Zero-power communication technology principle

[0053] In recent years, the application of zero-power devices has become more and more widespread. The zero-power Internet of Things can also be referred to as Ambient power enabled IoT, abbreviated as Ambient IoT (Ambient Internet of Things), and is also referred to as passive IoT (passive Internet of Things) in some technical documents. Ambient IoT device means an IoT device that uses various environmental energies (such as wireless radio frequency energy, light energy, solar energy, thermal energy, mechanical energy, and various environmental energies) to drive itself. Such a device can have no energy storage capability, or can have very limited energy storage capability (such as using a capacitor with a capacity of several tens of uF). Compared with existing IoT devices, Ambient IoT devices have many advantages such as no conventional battery, no maintenance, small size, low complexity and low cost, long service life, and the like.

[0054] Zero-power communication adopts energy harvesting and backscattering communication technology. A zero-power communication network is composed of network devices and zero-power devices, as shown in FIG. 2. The network devices are used to send wireless power signals, downlink communication signals to the zero-power devices, and receive backscattering signals of the zero-power devices. A basic zero-power device includes an energy harvesting module, a backscattering communication module, and a low-power computing module. In addition, the zero-power device can also have a memory or a sensor for storing some basic information (such as article identification) or obtaining environmental temperature, environmental humidity, and other sensor data.

[0055] The key technologies of zero-power communication mainly include radio frequency energy harvesting and backscattering communication.

[0056] 1.1. Radio frequency energy harvesting (RF Power Harvesting)

[0057] As shown in FIG. 3, the radio frequency energy harvesting module is based on the principle of electromagnetic induction to collect the energy of space electromagnetic waves, and then obtain the energy required to drive the zero-power device to work, such as driving low-power demodulation and modulation modules, sensors, and memory reading. Therefore, the zero-power device does not need a traditional battery.

[0058] 1.2. Backscattering communication (Back Scattering)

[0059] As shown in FIG. 4, the zero-power communication terminal receives the wireless signal sent by the network, modulates the wireless signal, loads the information to be sent, and radiates the modulated signal from the antenna. This information transmission process is called backscattering communication. Backscattering and load modulation are inseparable. Load modulation adjusts and controls the circuit parameters of the oscillation loop of the zero-power device according to the beat of the data stream, so that the size of the impedance of the electronic tag and other parameters change, thereby completing the modulation process. Load modulation technology mainly includes resistance load modulation and capacitance load modulation. In resistance load modulation, a resistance is connected in parallel with the load, and the resistance is turned on or off based on the control of the binary data stream, as shown in FIG. 5 below. The on-off of the resistance will cause the change of the circuit voltage, so as to realize amplitude shift keying (ASK) modulation, that is, the amplitude of the backscattering signal of the zero-power device is adjusted to realize the modulation and transmission of the signal. Similarly, in capacitance load modulation, the on-off of the capacitance can realize the change of the circuit resonance frequency, and realize frequency shift keying (FSK) modulation, that is, the working frequency of the backscattering signal of the zero-power device is adjusted to realize the modulation and transmission of the signal.

[0060] It can be seen that the zero-power device modulates the incoming signal by means of load modulation to realize the backscatter communication process. Therefore, the zero-power device has the following advantages:

[0061] (1) The terminal does not actively transmit signals, and therefore does not need a complex radio frequency link, such as a power amplifier (PA) and a radio frequency filter;

[0062] (2) The terminal does not need to actively generate high-frequency signals, and therefore does not need a high-frequency crystal oscillator;

[0063] (3) With backscatter communication, the terminal signal transmission does not consume the terminal's own energy.

[0064] 1.3. Application scenarios of zero-power communication

[0065] Due to the significant advantages of zero cost, zero power consumption, and small size, zero-power communication can be widely used in various industries, such as logistics, intelligent warehousing, smart agriculture, energy and power, industrial internet, and personal applications such as smart wearables and smart homes.

[0066] 1.4. Classification of zero-power devices

[0067] Based on the energy source and usage of the zero-power device, the zero-power device can be classified as follows:

[0068] (1) Passive zero-power device

[0069] The zero-power device does not need an internal battery. When the zero-power device is close to a network device (such as a reader of an RFID system), the zero-power device is within the near-field range formed by the antenna radiation of the network device. Therefore, the zero-power device antenna generates an induced current through electromagnetic induction, which drives the low-power chip circuit of the zero-power device. This realizes the demodulation of the forward link signal (downlink, from the network device to the zero-power device) and the signal modulation of the back link (uplink, from the zero-power device to the network device). For the backscatter link, the zero-power device uses a backscatter implementation to transmit signals.

[0070] It can be seen that the passive zero-power device does not need an internal battery to drive it, whether for the forward link or the back link, and is a truly zero-power device.

[0071] The passive zero-power device does not need a battery, and the radio frequency circuit and the baseband circuit are very simple, for example, without the need of LNA (Low Noise Amplifier), PA, crystal oscillator, ADC (Analog-to-Digital Converter) and other devices, thus having many advantages such as small size, light weight, very low price, long service life and the like.

[0072] (2) Semi-passive zero-power device

[0073] The semi-passive zero-power device itself does not install a conventional battery, but can use an RF (Radio Frequency) energy harvesting module to harvest radio wave energy, or use a solar energy, light energy, thermal energy, kinetic energy harvesting module to harvest energy, and at the same time store the harvested energy in an energy storage unit (such as a capacitor). After the energy storage unit obtains energy, it can drive the low-power chip circuit of the zero-power device to realize demodulation of the forward link signal and modulation of the backward link signal and other work. For the backscatter link, the zero-power device uses a backscatter implementation to transmit signals.

[0074] As can be seen, the semi-passive zero-power device does not need a built-in battery to drive, although it uses energy stored in a capacitor during work, but the energy comes from the radio energy harvested by the energy harvesting module, so it is also a truly zero-power device.

[0075] The semi-passive zero-power device inherits many advantages of the passive zero-power device, thus having many advantages such as small size, light weight, very low price, long service life and the like.

[0076] (3) Active zero-power device

[0077] Some zero-power devices used in some scenarios can also be active zero-power devices, which can have a built-in battery (conventional battery, such as dry battery, rechargeable lithium battery and the like). The battery is used to drive the low-power chip circuit of the zero-power device to realize demodulation of the forward link signal and modulation of the backward link signal and other work. But for the backscatter link, the zero-power device uses a backscatter implementation to transmit signals. Therefore, the zero-power of this type of terminal is mainly reflected in that the signal transmission of the backward link does not need the power of the terminal itself, but uses the backscatter method. Although the active zero-power device uses a battery, due to the use of ultra-low power communication technology, the power consumption is very low, thus greatly improving the working life of the battery compared with the prior art.

[0078] Active zero-power device, built-in battery to supply power to RFID chip to increase the read-write distance of the tag, improve the reliability of communication. Therefore in some on the communication distance, read latency and other aspects of the requirements of the scene can be applied.

[0079] Classification of zero-power devices based on transmitter type.

[0080] As is known, the business type of zero-power Internet of Things will also be dominated by industry business as other Internet of Things business types. Therefore, according to the way the zero-power terminal sends data, it can be divided into the following types:

[0081] (1) Zero-power device based on backscatter

[0082] This type of zero-power device uses the backscatter method described above to send uplink data. This type of device does not have an active transmitter that actively transmits, but only has a backscatter transmitter. Therefore, when this type of terminal transmits data, the network device needs to provide a carrier, and the terminal device performs backscatter based on the carrier to achieve data transmission.

[0083] (2) Zero-power device based on active transmitter

[0084] This type of zero-power device uses an active transmitter with active transmission capability to transmit uplink data, so this type of zero-power device can transmit data using its own active transmitter when transmitting data, without the need for the network device to provide a carrier. The active transmitter suitable for zero-power devices may be, for example, an ultra-low-power ASK, an ultra-low-power FSK transmitter, etc. Based on the current implementation, the overall power consumption of this type of transmitter can be reduced to 400-600uw when transmitting a 100uw signal.

[0085] (3) Zero-power device with both backscatter and active transmitter

[0086] This type of terminal can support both backscatter and active transmitter. The terminal can determine which type of uplink signal transmission method to use, backscatter or active transmitter, according to different situations (such as the amount of power, available environmental energy), or based on the scheduling of the network device.

[0087] 2. Cellular passive Internet of Things

[0088] The cellular Internet of Things is booming, and 3GPP (3rd Generation Partnership Project) has standardized NB-IoT (Narrow Band Internet of Things), MTC (Machine Type Communication), RedCap (Reduced Capability), and other Internet of Things technologies, but there are still many Internet of Things communication needs in various scenarios that cannot be met using existing technologies, for example:

[0089] (1) Strict communication environment

[0090] Some Internet of Things scenarios may face extreme environments such as high temperature, extremely low temperature, high humidity, high pressure, high radiation, or high-speed motion. For example, ultra-high voltage substations, high-speed train track monitoring, high-cold environment monitoring, industrial production lines, etc. In these scenarios, due to the working environment limitations of conventional power supplies, existing Internet of Things terminals will not be able to work. In addition, extreme working environments are also not conducive to the maintenance of the Internet of Things, such as replacing the battery.

[0091] (2) Extremely small terminal form factor requirements

[0092] Some Internet of Things communication scenarios, such as food traceability, commodity circulation, and smart wearables, require terminals to have extremely small sizes to facilitate their use in these scenarios. For example, Internet of Things terminals for commodity management in the circulation link are usually in the form of electronic tags, which are embedded in the commodity packaging in a very small form. For another example, lightweight wearable devices can improve user experience while meeting user needs.

[0093] (3) Extremely low-cost Internet of Things communication requirements

[0094] Many Internet of Things communication scenarios require Internet of Things terminals to be low-cost enough to enhance their competitiveness relative to other alternative technologies. For example, in logistics or warehousing scenarios, in order to facilitate the management of a large number of circulating goods, Internet of Things terminals can be attached to each item, thereby completing the precise management of the entire logistics process and cycle through communication between the terminal and the logistics network. These scenarios require Internet of Things terminals to be competitively priced.

[0095] Therefore, in order to cover these unmet Internet of Things communication needs, ultra-low-cost, extremely small-size, battery-free, or maintenance-free Internet of Things are needed in cellular networks, and zero-power Internet of Things can meet this demand.

[0096] Based on 3GPP's discussion of Ambient IoT application scenarios, Ambient IoT can be used in at least the following four scenarios:

[0097] (1) Object recognition, such as logistics, production line product management, supply chain management;

[0098] (2) Environmental monitoring, such as temperature, humidity, and harmful gas monitoring of working environment and natural environment;

[0099] (3) Positioning, such as indoor positioning, intelligent search, and production line article positioning;

[0100] (4) Intelligent control, such as intelligent control of various appliances in smart home (turning on / off air conditioner, adjusting temperature), and intelligent control of various facilities in agricultural greenhouse (automatic irrigation, fertilization).

[0101] 3GPP discussed and passed the research project of A-IOT, which contains at least two types of A-IOT devices:

[0102] The first type of A-IOT device: ~1 uW peak power consumption, which has energy storage, initial sampling frequency offset of 10X ppm, no uplink and downlink power amplifier, and transmits uplink transmission by backscattering external carrier. Exemplarily, the range of X is 4 to 5, i.e. [4, 5].

[0103] The second type of A-IOT device: peak power consumption less than several hundred uW, which has energy storage, initial sampling frequency offset of 10X ppm, and can be configured with uplink and / or downlink power amplifier, and can transmit uplink transmission by actively emitting from the inside of the A-IOT device or by backscattering external carrier. Exemplarily, the range of X is 4 to 5, i.e. [4, 5].

[0104] A-IOT mainly considers the following two deployment scenarios / topologies, which correspond to FIG. 6:

[0105] (1) BS Ambient IoT device, the base station and the A-IOT device directly perform bidirectional signaling and / or data communication. Among them, the base station sending to the A-IOT device and the base station receiving the A-IOT can be two different base stations.

[0106] (2) BS intermediate node Ambient IoT device, A-IOT device, communicates with an intermediate node in both directions, which can relay signaling and / or data between the BS and the A-IOT device. In the SID discussion phase, the intermediate node was finally determined as a UE (User Equipment) under network control, and the intermediate node is located indoors.

[0107] 3. Existing access mechanisms

[0108] Currently, two types of services are mainly considered in the A-IOT research project, one is DT (Device-terminated) and the other is DO-DTT (Device-originated-device-terminated triggered). DT mainly refers to making A-IOT terminals execute specific actions through downlink commands, for example, in the smart home scenario, the command "turn on the air conditioner" is issued to the A-IOT device, and the A-IOT device performs the corresponding operation. DO-DTT mainly refers to triggering A-IOT devices to report information through downlink commands, typical scenarios are warehouse inventory or sensor sensing, for example, triggering a number of zero-power tags to report ID or sensor data through trigger information.

[0109] Considering that the number of A-IOT devices in the above scenarios can be very large, especially in the DO-DTT service, the goods in the warehouse are all pasted with zero-power tags, how these large number of zero-power tags report information and avoid conflicts between each other is a problem to be solved, the slot-based aloha mechanism in RFID (Radio Frequency Identification) can be used as a baseline.

[0110] For example, FIG. 7 illustrates a slot-based aloha mechanism for inventory in a conventional RFID system. Although it is a slot-based mechanism, the length, the start position and the end position of each slot are not fixed due to the asynchronous nature of the RFID system. The start position and the end position of each slot in an inventory round are actually defined by the Query and QueryRep commands. For example, slot 0 in FIG. 7 is the end time of the Query command sent by the reader to the next end time of the QueryRep command. After that, the start and end of each slot are the end time of the QueryRep command of the previous slot and the current slot. In other words, the reader indicates the start of a new slot and the end of the current slot each time a QueryRep command is sent. It is noted that the end of the last slot of an inventory round can be indicated by the Query command of the next inventory round, i.e., the end time of the Query command, which also indicates the start of the first slot of the next inventory round.

[0111] Firstly, the reader sends a select instruction, which is used to determine the tag set for inventory, for example, there are a large number of tags in the warehouse, and the select instruction is needed to determine the tags for inventory, that is, the tag receives the select instruction and judges whether to participate in this inventory. After the select instruction, the reader sends a Query instruction, which includes a Q value. After the tag for inventory obtains the Q value, a random integer between 0 and 2^Q-1 is generated, for example, as a counter. Thereafter, each time a QueryRep instruction is received, that is, each time a new slot is started, the counter of each tag is reduced by 1, and when the counter of the tag is reduced to 0, access can be performed in the corresponding slot. For example, in FIG. 7, the counter generated by tag a is 0, so it can directly access slot 0. The counters generated by tags b and c are 2, so they need to receive two QueryRep instructions, that is, they will be reduced to 0 in slot 2, and therefore tags b and c access slot 2. It can be understood that the initial value of the counter also corresponds to the time slot index in an inventory round (if the time slot index starts from 0), that is, an inventory round includes 2^Q time slots, and the index is from 0 to 2^Q-1. In summary, different tags access different slots by randomly generating counter values.

[0112] When a tag accesses in a slot, for example, tag a accesses in slot 0 in Fig. 7, tag a first sends a random sequence RN16 with length of 16 as temporary identification to reader, and reader sends back a response to tag a after receiving RN16, the response includes the same RN16, if tag a receives the same RN16 as the one it sent before, tag a sends EPC (Electronic Product Code) to reader, and reader sends Queryrep after receiving EPC, the signaling is used to indicate to tag a that EPC has been received and the inventory of tag a is successful, and is also used to indicate to all tags to decrease the counter value by 1, i.e. to start a new slot, and other tags can access in the new slot. It should be noted that in the above access process of tag a, if there is signaling loss or transmission error, the inventory of tag a fails. For example, tag a sends RN16 to reader, and reader does not receive RN16, then the inventory of tag a fails, and tag a has to wait for the next inventory round to receive Query instruction to generate counter value according to Q value in the instruction and to report information again in the next inventory round.

[0113] Since the counter values generated by each tag between 0 and 2^Q-1 are random, some values will not be selected by any tag, and then no tag in the corresponding slot will report information, for example, slot 1 in Fig. 7. On the contrary, when multiple tags select the same counter value, they will report information in the same time slot, and in this case, collision occurs, and reader cannot identify the RN16 of any tag, because the waveform received by reader is the superposition of multiple random sequences, and there is no design of orthogonal characteristics between multiple RN16, so the tags that collide cannot access and fail to inventory, and have to wait for the next inventory round to inventory again, for example, tag b and tag c both report RN16 in slot 2 in Fig. 7, and collision occurs, and both have to wait for inventory round 2 to report information again.

[0114] Each query sent by the Reader signifies the end of the previous inventory round and the start of a new one. For example, in Figure 7, inventory round 2 will continue to inventory tags that were not successfully counted in inventory round 1. The Q value indicated in the query can be adjusted between inventory rounds. For instance, if the Reader finds many time slots without tags in the previous round, the Q value will be decreased in the next round. Conversely, if the Reader finds many collisions in the previous round, the Q value will be increased in the next round. For example, at the beginning of each inventory round, relative to the previous round, the Reader can add or subtract 1 to the Q value, keep it unchanged, or set it to any allowed value, and then indicate this to the tag via the query. For example, when Q = 0, the entire inventory process ends.

[0115] In addition, the Initial Access (RACH) mechanism in NR Uu can also serve as a reference mechanism for the above inventory, in which both two-step RACH and four-step RACH can be considered.

[0116] For example, Figure 8 shows a schematic diagram of the four-step RACH and two-step RACH in the existing NR Uu. The main purpose of the initial access is to enable the base station to know the existence of the terminal, assign it an identifier such as C-RNTI (Cell-Radio Network Temporary Identifier), and perform uplink synchronization between the base station and the terminal.

[0117] In subgraph 1 of FIG. 8, the base station first transmits a downlink synchronization signal, such as an SSB (Synchronization Signal / PBCH Block), the terminal performs downlink synchronization by searching for the downlink synchronization signal, and acquires some configuration information, such as acquiring a resource for transmitting a preamble. Subsequently, the terminal selects a preamble sequence to transmit to the base station, and thus the preamble sequence can also be referred to as message 1 (message 1). Generally, different terminals select different preamble sequences when performing initial access, but there is also a possibility that different UEs select the same preamble sequence, i.e., there is a collision, which needs to be solved through signaling interaction of messages 3 and 4. It is assumed that terminal 1 and terminal 2 select the same preamble_1 (indicated by diagonal shading in the figure). After receiving message 1, the base station feeds back a RAR (Random Access Response), i.e., message 2 (message 2), which contains a timing advance for subsequent uplink transmission by the terminal, allocates a TC-RNTI (Temporary Cell RNTI) to the terminal, and indicates a resource for message 3 (message 3) transmission by the UE. It should be noted that if terminal 1 and terminal 2 select the same preamble sequence (i.e., preamble_1), they will receive the same RAR message (RAR_1), and the same TC-RNTI. Subsequently, terminal 1 and terminal 2 will both transmit message 3 on the same resource (Msg3_1) based on the indication in the RAR, and carry their own ID information in the respective message 3. If the base station successfully receives only the message 3 of terminal 1 or terminal 2, for example, the message 3 of terminal 1, it truncates the message 3 of terminal 1 to 48 bits and then transmits the truncated message 3 as message 4 (message 4) (i.e., Msg4_1). After receiving message 4, terminal 1 confirms that the message 3 it transmitted matches the message 4 fed back by the base station by comparing the two, and then the TC-RNTI obtained by terminal 1 in the RAR message (i.e., RAR_1) is converted to a C-RNTI for subsequent scheduling of terminal 1. Terminal 1 completes the random access process, while terminal 2 finds that the message 4 fed back by the base station does not match its message 3, and thus needs to perform initial access again.If the base station successfully receives the message 3 of the terminal 1 and the terminal 2 at the same time, in order to ensure the uniqueness of the C-RNTI in the cell, the message 3 of only one of the terminal 1 and the terminal 2 will be truncated to 48 bits for feedback, for example, only the truncated information bits of the message 3 of the terminal 1 are fed back, and the terminal 2 needs to re-perform the random access. It can be understood that if there is no conflict, the terminal selects the preamble and obtains a unique C-RNTI after 4-step RACH.

[0118] In subgraph 2 of FIG. 8, the base station also first transmits a downlink synchronization signal, such as an SSB, and the terminal performs downlink synchronization by searching for the downlink synchronization signal and acquires some configuration information, such as acquiring a resource for transmitting a preamble. The difference from the 4-step RACH is that there is an association relationship between the preamble resource and the message 3 resource, and this association relationship is determined according to the configuration information carried by the downlink synchronization signal, so that when the terminal randomly selects a preamble, the terminal can directly acquire the transmission resource position of the message 3, and the terminal transmits a preamble sequence and a message 3, and the preamble sequence and the message 3 are collectively referred to as a message A. If terminal 1 and terminal 2 happen to select the same preamble_1 when randomly selecting a preamble sequence, terminal 1 and terminal 2 will respectively transmit a message 3 on the same resource Msg_3, and the message 3 contains the respective IDs of terminal 1 and terminal 2. If the base station successfully receives only the message A of terminal 1 or terminal 2, for example, the message A of terminal 1, the message 3 transmitted by terminal 1 is truncated to 48 bits and then transmitted as part of a message B (message B) (i.e., MsgB_1), and terminal 1 receives the message B and confirms that the message 3 transmitted by itself and the message B fed back by the base station match, and then terminal 1 completes the random access process, and the message B also carries the C-RNTI allocated to terminal 1 and the timing advance, and terminal 2 finds that the message B fed back by the base station does not match the message 3 of itself, and then needs to re-perform initial access. If the base station successfully receives the message A of terminal 1 and terminal 2 at the same time, in order to ensure the uniqueness of the C-RNTI in the cell, the base station will only truncate the message 3 of one of terminal 1 and terminal 2 to 48 bits as part of the message B and feed back, for example, only the truncated information bits of the message 3 of terminal 1, and terminal 2 needs to re-perform random access. It can be understood that if there is no conflict, the terminal selects a preamble and acquires a unique C-RNTI and timing advance after 2-step RACH.

[0119] 4. Access mechanism in A-IOT system

[0120] In the A-IOT system, it has also been agreed to study the four-step access mechanism and the two-step access mechanism, but the specific details have not been discussed.

[0121] The four-step access mechanism refers to a mechanism in which communication devices perform four-step interaction to realize access. For the four-step access mechanism, the process can include: step 1, an A-IOT device reports a random identifier, such as a random sequence RN16 with a length of 16; step 2, a reader feeds back based on the random identifier; step 3, the A-IOT device reports a device identifier, such as an EPC; and step 4, the reader feeds back based on the device identifier.

[0122] For the four-step access mechanism, a possible implementation manner is shown in FIG. 9, subgraph 1. The reader sends a Query instruction to trigger access or inventory. The device receives the Query instruction and sends a random sequence RN16 with a length of 16 to the reader as a temporary identifier. The reader receives the RN16 and feeds back to the device with a Response. The Response includes the same RN16. If the RN16 received by the device is consistent with the RN16 sent before, the device sends an EPC to the reader. The reader sends a QueryRep instruction after successfully receiving the EPC. The QueryRep instruction can be used to indicate that the EPC has been successfully received. It can be understood that, in the above process, if the device does not successfully receive the Response or the QueryRep instruction, or the ID carried in the Response or the QueryRep instruction does not match the ID of the device, the device considers that the access fails.

[0123] The last step in the four-step access mechanism, i.e., the feedback of the reader based on the device identifier, is optional. When the step is not included, the four-step access mechanism can also be referred to as a three-step access mechanism.

[0124] The two-step access mechanism refers to a mechanism in which communication devices perform two-step interaction to realize access.

[0125] For the two-step access mechanism, a possible implementation manner is shown in FIG. 9, subgraphs 2, 3 or 4.

[0126] For example, in subgraph 2, the reader sends a Query instruction to trigger access or inventory. The device receives the Query instruction and sends a random sequence RN16 with a length of 16 to the reader as a temporary identifier. The resource of the RN16 is associated with the resource of the EPC, so the device also sends the EPC associated with the RN16. The reader sends a QueryRep instruction after successfully receiving the RN16 and the EPC. The QueryRep instruction can be used to indicate that the EPC has been successfully received.

[0127] For example, in subfigure 2, reader sends Query command to trigger access or inventory. Device receives the Query command and sends its corresponding EPC. Reader receives the EPC successfully and sends QueryRep command. The QueryRep command can be used to indicate to the device that the EPC has been received successfully. The difference between subfigure 2 and 3 is whether the random sequence RN16 needs to be sent. It can also be understood that when the device does not receive the QueryRep command successfully or the identity carried in the QueryRep command does not match its own identity, the device considers the access to be unsuccessful.

[0128] For example, in subfigure 4, reader sends Query command to trigger access or inventory. Device receives the Query command and sends RN16 and EPC to the reader. Reader receives RN16 and EPC successfully and sends QueryRep command. The QueryRep command can be used to indicate to the device that the EPC has been received successfully. The difference between subfigure 2 and 4 is that in subfigure 2, RN16 and EPC are sent in two different messages, and in subfigure 4, RN16 and EPC are sent in the same message. Or in subfigure 2, RN16 and EPC are sent on two different resources, and in subfigure 4, RN16 and EPC are sent on the same resource.

[0129] Optionally, the above Query command or QueryRep command can also be called Paging message. Optionally, the Query command sent by the reader can also be QueryRep command, that is, using QueryRep command as the first instruction of two-step or four-step access.

[0130] 5. Frame structure of R2D and D2R transmission

[0131] R2D transmission is reader to device transmission, which can also be called A-IOT downlink transmission. It is base station to A-IOT device transmission in the above-mentioned A-IOT deployment scenario / topology 1 shown in figure 6, and it is intermediate node to A-IOT device transmission in the above-mentioned A-IOT deployment scenario / topology 2 shown in figure 6. D2R transmission is device to reader transmission, which can also be called A-IOT uplink transmission. It is A-IOT device to base station transmission in the above-mentioned A-IOT deployment scenario / topology 1 shown in figure 6, and it is A-IOT device to intermediate node transmission in the above-mentioned A-IOT deployment scenario / topology 2 shown in figure 6.

[0132] The frame structure design for R2D transmission and D2R transmission can be as shown in FIG. 10. Subfigure 1 is a frame structure, and subfigure 2 is another frame structure. Both the frame structures shown in subfigure 1 and subfigure 2 exist in the current standard discussion on A-IOT uplink and downlink frame structures.

[0133] The common point of the above two structures is that a preamble is designed before PRDCH (Physical Reader To Device Channel) and PDRCH (Physical Device To Reader Channel). The preamble can be used for timing calibration, can be used for indicating the starting position of transmission, and can also be used for indicating simple control information. The PRDCH can be used for carrying data from the reader to the device, or can be used for carrying control information from the reader to the device, for example, including physical layer control information (such as ACI (A-IOT Control Information)) and / or high layer control information (such as MAC CE (Media Access Control Control Element)). Similarly, the PDRCH can be used for carrying data from the device to the reader, or can be used for carrying control information from the device to the reader, for example, including physical layer control information (such as ACI) and / or high layer control information (such as MAC CE).

[0134] Please refer to FIG. 11, which shows a flow chart of the indication and determination method of access resource provided by an embodiment of the present application. The method can be applied to the network architecture shown in FIG. 1 and FIG. 6. The method can include at least one of the following steps 1110-1120.

[0135] Step 1110, the second communication device sends first signaling to the first communication device, and the first signaling is used for indicating the resource corresponding to the first access mechanism and / or the resource corresponding to the second access mechanism, wherein the first access mechanism and the second access mechanism are two different access mechanisms.

[0136] Correspondingly, the first communication device receives the first signaling sent by the second communication device. Exemplarily, the first signaling is a Query instruction or a QueryRep instruction or a Paging message.

[0137] In some embodiments, the first communication device is an A-IOT device, and the second communication device is a network device or an intermediate node. Exemplarily, the network device can be a base station. Exemplarily, the intermediate node is a terminal device, such as a UE.

[0138] In some embodiments, the first access mechanism and the second access mechanism are different, which can mean that the first access mechanism and the second access mechanism have different access procedures or include different steps. In some embodiments, the number of steps included in the first access mechanism and the number of steps included in the second access mechanism are different.

[0139] In some embodiments, the first access mechanism is a two-step access mechanism, and the second access mechanism is a four-step access mechanism or a three-step access mechanism. For a detailed description of the two-step access mechanism, the three-step access mechanism, and the four-step access mechanism, refer to the foregoing, and no further description is given here.

[0140] In some embodiments, the resource corresponding to the first access mechanism refers to the resource corresponding to at least one step included in the first access mechanism, such as the transmission resource occupied by the information transmitted and / or received by at least one step included in the first access mechanism. In some embodiments, the resource corresponding to the first access mechanism is the time domain and / or frequency domain resource corresponding to the first access mechanism.

[0141] In some embodiments, the resource corresponding to the second access mechanism refers to the resource corresponding to at least one step included in the second access mechanism, such as the transmission resource occupied by the information transmitted and / or received by at least one step included in the second access mechanism. In some embodiments, the resource corresponding to the second access mechanism is the time domain and / or frequency domain resource corresponding to the second access mechanism.

[0142] In some embodiments, the resource corresponding to the first access mechanism is orthogonal to the resource corresponding to the second access mechanism. That is, there is no overlap between the resource corresponding to the first access mechanism and the resource corresponding to the second access mechanism. For example, there is no overlap in the time domain, or there is no overlap in the frequency domain, or there is no overlap in the time domain and the frequency domain between the resource corresponding to the first access mechanism and the resource corresponding to the second access mechanism.

[0143] In step 1120, the first communication device determines the resource corresponding to the first access mechanism and / or the second access mechanism according to the first signaling transmitted by the second communication device.

[0144] The first communication device can determine the resource corresponding to the first access mechanism and / or the second access mechanism according to the first signaling. Then, the access mechanism and / or the resource used for access are selected accordingly. The access mechanism used for access can be the first access mechanism or the second access mechanism.

[0145] In some embodiments, the first communication device randomly determines the first resource, and the first resource is a resource used by the first communication device for access. If the first resource belongs to the resource corresponding to the first access mechanism, the first access mechanism is used for access; if the first resource belongs to the resource corresponding to the second access mechanism, the second access mechanism is used for access. In this way, the first communication device first determines the resource used for access, that is, the first resource, and then determines the access mechanism used for access according to which access mechanism the first resource belongs to. In the above case, the first communication device does not know which access mechanism to use, and further determines which access mechanism to use through the determined first resource.

[0146] In some embodiments, if the first communication device uses the first access mechanism, the first communication device accesses in the resource corresponding to the first access mechanism; if the first communication device uses the second access mechanism, the first communication device accesses in the resource corresponding to the second access mechanism. In some embodiments, whether the first communication device uses the first access mechanism or the second access mechanism can be configured or indicated by the second communication device, or can depend on the implementation of the first communication device, such as the first communication device has switched or fallen back from the first access mechanism to the second access mechanism, or the first communication device has switched or fallen back from the second access mechanism to the first access mechanism. In this way, the first communication device already knows which access mechanism to use, and then accesses using the resource corresponding to the access mechanism.

[0147] The technical scheme provided by the embodiments of the present application designs a scheme in which the first communication device determines the resource corresponding to the access mechanism according to the indication of the second communication device, so as to ensure that the A-IOT device uses the corresponding access resource when using a certain access mechanism, and ensure the reliability of random access transmission.

[0148] Next, different cases of the resource corresponding to the first access mechanism and / or the second access mechanism are introduced and described.

[0149] Case 1

[0150] In some embodiments, the resource corresponding to the first access mechanism includes a resource in which the first communication device reports the device identifier, and a resource in which the second communication device feeds back based on the device identifier.

[0151] In the case where the first access mechanism is a two-step access mechanism, if the two-step access mechanism adopts the access flow shown in FIG. 9, subgraph 3, the resource corresponding to the first access mechanism can include a resource in which the first communication device reports the device identifier, and a resource in which the second communication device feeds back based on the device identifier. Exemplarily, the device identifier is EPC, and the resource corresponding to the first access mechanism can include a resource in which the first communication device reports the EPC, and a resource in which the second communication device feeds back the QueryRep instruction based on the EPC.

[0152] In some embodiments, the resource corresponding to the first access mechanism comprises: a resource for the first communication device to report a random identifier and a device identifier, and a resource for the second communication device to feed back based on the random identifier and the device identifier.

[0153] In the case where the first access mechanism is a two-step access mechanism, if the two-step access mechanism adopts the access procedure shown in FIG. 9, subgraph 2 or subgraph 4, the resource corresponding to the first access mechanism comprises: a resource for the first communication device to report a random identifier and a device identifier, and a resource for the second communication device to feed back based on the random identifier and the device identifier.

[0154] Exemplarily, the random identifier is RN16, the device identifier is EPC, and the resource corresponding to the first access mechanism comprises: a resource for the first communication device to report RN16 and EPC, and a resource for the second communication device to feed back a QueryRep instruction based on RN16 and EPC.

[0155] Optionally, the resource for the first communication device to report the random identifier and the resource for the first communication device to report the device identifier are two independent resources. As shown in FIG. 9, subgraph 2, RN16 and EPC are sent in two different messages or on two different resources, and at this time, the resource for the first communication device to report RN16 and the resource for the first communication device to report EPC are two independent resources.

[0156] Optionally, the resource for the first communication device to report the random identifier and the resource for the first communication device to report the device identifier are the same resource. As shown in FIG. 9, subgraph 4, RN16 and EPC are sent in the same message or on the same resource, and at this time, the resource for the first communication device to report RN16 and the resource for the first communication device to report EPC are the same resource.

[0157] In some embodiments, the resource corresponding to the second access mechanism comprises: a resource for the first communication device to report a random identifier, a resource for the second communication device to feed back based on the random identifier, a resource for the first communication device to report a device identifier, and a resource for the second communication device to feed back based on the device identifier.

[0158] In the case where the second access mechanism is a four-step access mechanism, the resource corresponding to the second access mechanism comprises: a resource for the first communication device to report a random identifier, a resource for the second communication device to feed back based on the random identifier, a resource for the first communication device to report a device identifier, and a resource for the second communication device to feed back based on the device identifier. Exemplarily, the random identifier is RN16, the device identifier is EPC, and the resource corresponding to the second access mechanism can comprise: a resource for the first communication device to report RN16, a resource for the second communication device to feed back a Response based on RN16, a resource for the first communication device to report EPC, and a resource for the second communication device to feed back a QueryRep instruction based on EPC.

[0159] In some embodiments, the resource corresponding to the second access mechanism includes: a resource for the first communication device to report a random identity, a resource for the second communication device to feed back based on the random identity, and a resource for the first communication device to report a device identity.

[0160] In the case where the second access mechanism is a three-step access mechanism, the resource corresponding to the second access mechanism includes: a resource for the first communication device to report a random identity, a resource for the second communication device to feed back based on the random identity, and a resource for the first communication device to report a device identity. Illustratively, the random identity is RN16, the device identity is EPC, and the resource corresponding to the second access mechanism can include: a resource for the first communication device to report RN16, a resource for the second communication device to feed back Response based on RN16, and a resource for the first communication device to report EPC.

[0161] For this case 1, the resource corresponding to the first access mechanism contains all transmission resources required to complete the access procedure corresponding to the first access mechanism, and the resource corresponding to the second access mechanism contains all transmission resources required to complete the access procedure corresponding to the second access mechanism. The resource corresponding to the first access mechanism and the resource corresponding to the second access mechanism are orthogonal, i.e., all transmission resources required to complete the access procedure corresponding to the first access mechanism are orthogonal to all transmission resources required to complete the access procedure corresponding to the second access mechanism.

[0162] In some embodiments, the first signaling contains at least one of the following: a first time domain indication field, a first frequency domain indication field, a second time domain indication field, and a second frequency domain indication field. The first time domain indication field is used to indicate the time domain resource corresponding to the first access mechanism, the first frequency domain indication field is used to indicate the frequency domain resource corresponding to the first access mechanism, the second time domain indication field is used to indicate the time domain resource corresponding to the second access mechanism, and the second frequency domain indication field is used to indicate the frequency domain resource corresponding to the second access mechanism.

[0163] In some embodiments, the time domain resource refers to a transmission resource divided and managed in the time domain, which can be a time slot, an OFDM (Orthogonal Frequency Division Multiplexing) symbol, a frame, a subframe, or other time ranges. The frequency domain resource refers to a transmission resource divided and managed in the frequency domain, which can be a PRB (Physical Resource Block), a channel, a grid, or other frequency ranges.

[0164] In some embodiments, the first signaling contains a first time domain offset, and the first time domain offset is used to determine the resource corresponding to the first access mechanism and / or the resource corresponding to the second access mechanism.

[0165] In some embodiments, the resource before the first time domain position is the resource corresponding to the first access mechanism, and the resource after the first time domain position is the resource corresponding to the second access mechanism; or, the resource before the first time domain position is the resource corresponding to the second access mechanism, and the resource after the first time domain position is the resource corresponding to the first access mechanism; wherein the first time domain position is determined according to the time domain position corresponding to the first signaling and the first time domain offset.

[0166] Optionally, the resource corresponding to the first time domain position (or the resource at the first time domain position) can be the resource corresponding to the first access mechanism or the resource corresponding to the second access mechanism.

[0167] Optionally, the first time domain position is determined according to the time domain position corresponding to the first signaling plus the first time domain offset.

[0168] Optionally, the unit of the first time domain offset can be a time slot, an OFDM symbol, ms (millisecond), us (microsecond), etc., which is not limited in the present application.

[0169] Optionally, the first time domain position can be a time slot, an OFDM symbol, or a certain time point (unit: ms or us), etc., which is not limited in the present application.

[0170] In some embodiments, the first signaling contains a first frequency domain offset, and the first frequency domain offset is used to determine the resource corresponding to the first access mechanism and / or the resource corresponding to the second access mechanism.

[0171] In some embodiments, the resource below the first frequency domain position is the resource corresponding to the first access mechanism, and the resource above the first frequency domain position is the resource corresponding to the second access mechanism; or, the resource below the first frequency domain position is the resource corresponding to the second access mechanism, and the resource above the first frequency domain position is the resource corresponding to the first access mechanism; wherein the first frequency domain position is determined according to the first frequency domain offset and one of the following: the frequency domain position corresponding to the first signaling, the frequency domain position of a carrier, and the frequency domain position of a BWP (Bandwidth Part).

[0172] Optionally, the resource corresponding to the first frequency domain position (or the resource at the first frequency domain position) can be the resource corresponding to the first access mechanism or the resource corresponding to the second access mechanism.

[0173] Optionally, the first frequency domain position is determined according to a frequency domain position of a carrier or a frequency domain position of a BWP corresponding to the frequency domain position according to the first signaling, plus or minus the first frequency domain offset. Illustratively, the frequency domain position of the carrier is the frequency domain start position of the carrier, that is, the lowest frequency domain position in the frequency range corresponding to the carrier. Illustratively, the frequency domain position of the BWP is the frequency domain start position of the BWP, that is, the lowest frequency domain position in the frequency range corresponding to the BWP.

[0174] Optionally, the unit of the first frequency domain offset can be the number of grids, the number of channels, the number of PRBs, or Hz (Hertz), etc., which is not limited in the present application.

[0175] Optionally, the first frequency domain position can be a certain grid, a certain channel, a certain PRB, or a certain frequency point (unit Hz), etc., which is not limited in the present application.

[0176] In some embodiments, for example, as shown in FIG. 12, first, the reader sends a select instruction, which is used to determine the device set for inventory, for example, there are a large number of devices in the warehouse, and the select instruction needs to be used to determine the device for inventory, that is, the device receives the select instruction and judges whether to participate in this inventory. After the select instruction, the reader sends a Query instruction, which includes a Q value in the Query instruction. After the device for inventory obtains the Q value, it will generate a random integer between [0, 2^Q-1], for example, as a counter. Thereafter, each time a QueryRep instruction is received, that is, each time a new slot is started, the counter of each device will be reduced by 1, and when the counter of the device is reduced to 0, it can access in the corresponding slot.

[0177] Based on the indication of the Query instruction or the QueryRep instruction, the A-IOT device can use a two-step access mechanism or a four-step access mechanism in each time slot.

[0178] Exemplarily, the counter value generated by the A-IOT device is 0, and the random access is performed in the slot 0. Optionally, since the Query instruction contains the first time domain indication field and the first frequency domain indication field, the resources corresponding to the two-step access mechanism are indicated, that is, the resources identified by the horizontal line shadow. The resources corresponding to the two-step access mechanism include the resources for reporting the device identifier by the A-IOT device, the resources for feedback based on the device identifier by the reader, or the resources for reporting the random identifier and the device identifier by the A-IOT device, and the resources for feedback based on the random identifier and the device identifier by the reader. That is, the reader and / or the A-IOT device can complete all steps of the two-step access mechanism in the resources identified by the horizontal line shadow. Since the Query instruction also contains the second time domain indication field and the second frequency domain indication field, the resources corresponding to the four-step access mechanism are indicated, that is, the resources identified by the vertical line shadow. The resources corresponding to the four-step access mechanism include the resources for reporting the random identifier by the A-IOT device, the resources for feedback based on the random identifier by the reader, the resources for reporting the device identifier by the A-IOT device, and the resources for feedback based on the device identifier by the reader. That is, the reader and / or the A-IOT device can complete all steps of the four-step access mechanism in the resources identified by the vertical line shadow. Optionally, the A-IOT device randomly determines the access resources in the resources indicated by the Query instruction, if the determined access resources belong to the resources identified by the horizontal line shadow, the two-step access mechanism is used for access in the resources identified by the horizontal line shadow, if the determined access resources belong to the resources identified by the vertical line shadow, the four-step access mechanism is used for access in the resources identified by the vertical line shadow. Optionally, if the A-IOT device is configured or instructed by the reader to use the two-step access mechanism or has been switched from the four-step access mechanism to the two-step access mechanism, the two-step access mechanism is used for access in the resources identified by the horizontal line shadow. If the A-IOT device is configured or instructed by the reader to use the four-step access mechanism or has been switched from the two-step access mechanism to the four-step access mechanism, the four-step access mechanism is used for access in the resources identified by the vertical line shadow.

[0179] For example, the counter value generated by the A-IOT device is 2, and the A-IOT device performs random access in slot 2. Optionally, the first time domain position is determined according to the first time domain offset and the time domain position of the QueryRep instruction in slot 1. Optionally, the QueryRep instruction in slot 1 further indicates that some time-frequency resources in slot 2 are used for the A-IOT device to perform random access, for example, the resources identified by the left and right oblique line shadows in slot 2. Among these resources, the resources before the first time domain position are the resources corresponding to the two-step access mechanism (i.e., the resources identified by the right oblique line shadow). The resources corresponding to the two-step access mechanism include: the resources used by the A-IOT device to report the device identifier, and the resources used by the reader to perform feedback based on the device identifier. Alternatively, the resources corresponding to the two-step access mechanism include: the resources used by the A-IOT device to report the random identifier and the device identifier, and the resources used by the reader to perform feedback based on the random identifier and the device identifier. That is, the reader and / or the A-IOT device can complete all steps of the two-step access mechanism in the resources identified by the right oblique line shadow. Among these resources, the resources after the first time domain position are the resources corresponding to the four-step access mechanism (i.e., the resources identified by the left oblique line shadow). The resources corresponding to the four-step access mechanism include: the resources used by the A-IOT device to report the random identifier, the resources used by the reader to perform feedback based on the random identifier, the resources used by the A-IOT device to report the device identifier, and the resources used by the reader to perform feedback based on the device identifier. That is, the reader and / or the A-IOT device can complete all steps of the four-step access mechanism in the resources identified by the left oblique line shadow. Optionally, the A-IOT device randomly determines the access resources in slot 2, and if the determined access resources belong to the resources identified by the right oblique line shadow, the A-IOT device uses the two-step access mechanism to perform access in the resources identified by the right oblique line shadow, and if the determined access resources belong to the resources identified by the left oblique line shadow, the A-IOT device uses the four-step access mechanism to perform access in the resources identified by the left oblique line shadow. Optionally, if the A-IOT device is configured or instructed by the reader to use the two-step access mechanism or has switched from the four-step access mechanism to the two-step access mechanism, the A-IOT device uses the two-step access mechanism to perform access in the resources identified by the right oblique line shadow. If the A-IOT device is configured or instructed by the reader to use the four-step access mechanism or has switched from the two-step access mechanism to the four-step access mechanism, the A-IOT device uses the four-step access mechanism to perform access in the resources identified by the left oblique line shadow.

[0180] Alternatively, the counter value generated by the A-IOT device is 2^Q-1, and the random access is performed in slot 2^Q-1. Optionally, the first frequency domain position can be determined according to the first frequency domain offset and the starting position of the carrier, since the first frequency domain offset is contained in the QueryRep instruction of slot 2^Q-2. Optionally, the QueryRep instruction of slot 2^Q-2 also indicates that some time-frequency resources in slot 2^Q-1 are used for the A-IOT device to perform random access, for example, the resources identified by the left and right diagonal line shadows in slot 2^Q-1. Among these resources, the resources below the first frequency domain position are the resources corresponding to the two-step access mechanism (i.e., the resources identified by the right diagonal line shadow). The resources corresponding to the two-step access mechanism include: the resources used by the A-IOT device to report the device identifier, and the resources used by the reader to perform feedback based on the device identifier. Alternatively, the resources corresponding to the two-step access mechanism include: the resources used by the A-IOT device to report the random identifier and the device identifier, and the resources used by the reader to perform feedback based on the random identifier and the device identifier. That is, the reader and / or the A-IOT device can complete all steps of the two-step access mechanism in the resources identified by the right diagonal line shadow. Among these resources, the resources above the first frequency domain position are the resources corresponding to the four-step access mechanism (i.e., the resources identified by the left diagonal line shadow). The resources corresponding to the four-step access mechanism include: the resources used by the A-IOT device to report the random identifier, the resources used by the reader to perform feedback based on the random identifier, the resources used by the A-IOT device to report the device identifier, and the resources used by the reader to perform feedback based on the device identifier. That is, the reader and / or the A-IOT device can complete all steps of the four-step access mechanism in the resources identified by the left diagonal line shadow. Alternatively, the A-IOT device randomly determines the access resources in slot 2^Q-1, if the determined access resources belong to the resources identified by the right diagonal line shadow, then the two-step access mechanism is used in the resources identified by the right diagonal line shadow for access, if the determined access resources belong to the resources identified by the left diagonal line shadow, then the four-step access mechanism is used in the resources identified by the left diagonal line shadow for access. Alternatively, if the A-IOT device is configured or instructed by the reader to use the two-step access mechanism or has already switched from the four-step access mechanism to the two-step access mechanism, then the two-step access mechanism is used in the resources identified by the right diagonal line shadow for access. If the A-IOT device is configured or instructed by the reader to use the four-step access mechanism or has already switched from the two-step access mechanism to the four-step access mechanism, then the four-step access mechanism is used in the resources identified by the left diagonal line shadow for access.

[0181] It can be understood that in this embodiment, each slot can include both the resource corresponding to the two-step access mechanism and the resource corresponding to the four-step access mechanism, and the resource corresponding to the two-step access mechanism and the resource corresponding to the four-step access mechanism are completely orthogonal, or in other words, there is no overlap between the resource used in any step of the two-step access and the resource used in any step of the four-step access.

[0182] Case 2

[0183] In some embodiments, the resource corresponding to the first access mechanism includes: a resource on which the first communication device reports a random identifier.

[0184] In the case where the first access mechanism is a two-step access mechanism, if the two-step access mechanism adopts the access procedure shown in FIG. 9 subgraph 2 or subgraph 4, the resource corresponding to the first access mechanism includes: a resource on which the first communication device reports a random identifier.

[0185] Exemplarily, the random identifier is RN16, and the resource corresponding to the first access mechanism includes: a resource on which the first communication device reports RN16.

[0186] In some embodiments, the resource corresponding to the second access mechanism includes: a resource on which the first communication device reports a random identifier.

[0187] In the case where the second access mechanism is a four-step access mechanism or a three-step access mechanism, the resource corresponding to the second access mechanism includes: a resource on which the first communication device reports a random identifier.

[0188] Exemplarily, the random identifier is RN16, and the resource corresponding to the second access mechanism includes: a resource on which the first communication device reports RN16.

[0189] For this case 2, the resource on which the first communication device reports a random identifier in the resource corresponding to the first access mechanism is orthogonal to the resource on which the first communication device reports a random identifier in the resource corresponding to the second access mechanism. Or in other words, the resource on which the random identifier is reported in the first access mechanism is orthogonal to the resource on which the random identifier is reported in the second access mechanism.

[0190] In some embodiments, the first signaling comprises at least one of: a first time domain indication field, a first frequency domain indication field, a second time domain indication field, and a second frequency domain indication field. The first time domain indication field is used to indicate the time domain resource corresponding to the first access mechanism (i.e., the time domain resource for reporting the random identity in the first access mechanism), the first frequency domain indication field is used to indicate the frequency domain resource corresponding to the first access mechanism (i.e., the frequency domain resource for reporting the random identity in the first access mechanism), the second time domain indication field is used to indicate the time domain resource corresponding to the second access mechanism (i.e., the time domain resource for reporting the random identity in the second access mechanism), and the second frequency domain indication field is used to indicate the frequency domain resource corresponding to the second access mechanism (i.e., the frequency domain resource for reporting the random identity in the second access mechanism).

[0191] In some embodiments, the time domain resource refers to a transmission resource divided and managed in the time domain, which can be a time slot, an OFDM symbol, a frame, a subframe, or other time range. The frequency domain resource refers to a transmission resource divided and managed in the frequency domain, which can be a PRB, a channel, a grid, or other frequency range.

[0192] In some embodiments, the first signaling comprises a first time domain offset, which is used to determine the resource corresponding to the first access mechanism and / or the resource corresponding to the second access mechanism.

[0193] In some embodiments, the resource before the first time domain position is the resource corresponding to the first access mechanism (i.e., the resource for reporting the random identity in the first access mechanism), and the resource after the first time domain position is the resource corresponding to the second access mechanism (i.e., the resource for reporting the random identity in the second access mechanism); or, the resource before the first time domain position is the resource corresponding to the second access mechanism (i.e., the resource for reporting the random identity in the second access mechanism), and the resource after the first time domain position is the resource corresponding to the first access mechanism (i.e., the resource for reporting the random identity in the first access mechanism); wherein the first time domain position is determined according to the time domain position corresponding to the first signaling and the first time domain offset.

[0194] Optionally, the resource corresponding to the first time domain position (or the resource at the first time domain position) can be the resource corresponding to the first access mechanism, or the resource corresponding to the second access mechanism. Optionally, the resource corresponding to the first time domain position (or the resource at the first time domain position) can be the resource for reporting the random identity in the first access mechanism, or the resource for reporting the random identity in the second access mechanism.

[0195] Optionally, the first time domain position is determined according to the time domain position corresponding to the first signaling plus the first time domain offset.

[0196] Optionally, the unit of the first time domain offset can be a time slot, an OFDM symbol, ms (millisecond), us (microsecond), etc., which is not limited in the present application.

[0197] Optionally, the first time domain position can be a time slot, an OFDM symbol, or a time point (in ms or us), etc., which are not limited in the present application.

[0198] In some embodiments, the first signaling contains a first frequency domain offset, and the first frequency domain offset is used to determine the resource corresponding to the first access mechanism and / or the resource corresponding to the second access mechanism.

[0199] In some embodiments, the resource lower than the first frequency domain position is the resource corresponding to the first access mechanism (i.e., the resource for reporting the random identity in the first access mechanism), and the resource higher than the first frequency domain position is the resource corresponding to the second access mechanism (i.e., the resource for reporting the random identity in the second access mechanism); or, the resource lower than the first frequency domain position is the resource corresponding to the second access mechanism (i.e., the resource for reporting the random identity in the second access mechanism), and the resource higher than the first frequency domain position is the resource corresponding to the first access mechanism (i.e., the resource for reporting the random identity in the first access mechanism); wherein the first frequency domain position is determined according to the first frequency domain offset and one of the following: the frequency domain position corresponding to the first signaling, the frequency domain position of the carrier, and the frequency domain position of the BWP (Bandwidth Part).

[0200] Optionally, the resource corresponding to the first frequency domain position (or the resource at the first frequency domain position) can be the resource corresponding to the first access mechanism, or the resource corresponding to the second access mechanism. Optionally, the resource corresponding to the first frequency domain position (or the resource at the first frequency domain position) can be the resource for reporting the random identity in the first access mechanism, or the resource for reporting the random identity in the second access mechanism.

[0201] Optionally, the first frequency domain position is determined according to the frequency domain position corresponding to the first signaling or the frequency domain position of the carrier or the frequency domain position of the BWP, plus or minus the first frequency domain offset. Exemplarily, the frequency domain position of the carrier is the frequency domain start position of the carrier, i.e., the lowest frequency domain position in the frequency range corresponding to the carrier. Exemplarily, the frequency domain position of the BWP is the frequency domain start position of the BWP, i.e., the lowest frequency domain position in the frequency range corresponding to the BWP.

[0202] Optionally, the unit of the first frequency domain offset can be the number of grids, the number of channels, the number of PRBs, or Hz (Hertz), etc., which are not limited in the present application.

[0203] Optionally, the first frequency domain position can be a certain grid, a certain channel, a certain PRB, or a certain frequency point (unit Hz), etc., which are not limited in the present application.

[0204] In some embodiments, there is a corresponding relationship between the resource reporting a random identifier in the first access mechanism and the resource reporting a device identifier in the first access mechanism. That is, in the first access mechanism, the first communication device can determine the resource reporting a device identifier corresponding to the resource reporting a random identifier according to the corresponding relationship. The second communication device sends second signaling, and accordingly, the first communication device receives the second signaling sent by the second communication device, and the second signaling is used to indicate the resource reporting a device identifier in the second access mechanism. That is, in the second access mechanism, the first communication device determines the resource reporting a device identifier according to the indication of the second communication device.

[0205] In some embodiments, the resource reporting a device identifier in the second access mechanism is orthogonal to the resource reporting a device identifier in the first access mechanism.

[0206] In some embodiments, the resource reporting a device identifier in the second access mechanism includes the resource reporting a device identifier in the first access mechanism. For example, the resource reporting a device identifier in the second access mechanism includes the resource reporting a device identifier corresponding to the resource reporting a random identifier which is not received or not transmitted in the first access mechanism.

[0207] In some embodiments, for example, as shown in FIG. 13, first, the reader sends a select instruction, and the select instruction is used to determine a device set for inventory, for example, a large number of devices exist in the warehouse, and the select instruction is needed to determine the device for inventory, that is, the device receives the select instruction and judges whether to participate in this inventory. After the select instruction, the reader sends a Query instruction, and the Q value is included in the Query instruction. After the device for inventory obtains the Q value, a random integer between 0 and 2^Q-1 is generated, for example, as a counter. After that, each time the QueryRep instruction is received, that is, each time a new slot is started, the counter of each device is reduced by 1, and when the counter of the device is reduced to 0, the device can access in the corresponding slot.

[0208] Based on the indication of the Query instruction or the QueryRep instruction, the A-IOT device can use the two-step access mechanism or the four-step access mechanism in each time slot.

[0209] Exemplarily, the counter value generated by the A-IOT device is 0, and the random access is performed in the slot 0. Optionally, since the first time domain indication field and the first frequency domain indication field are included in the Query instruction, the resources for reporting the random identifier in the two-step access mechanism are indicated, that is, the resources identified by the vertical line shadow. Since the second time domain indication field and the second frequency domain indication field are also included in the Query, the resources for reporting the random identifier in the four-step access mechanism are indicated, that is, the resources identified by the horizontal line shadow. Optionally, the A-IOT device randomly determines the access resource in the resource indicated by the Query instruction, if the determined access resource belongs to the resource identified by the horizontal line shadow, the random identifier is reported in the resource identified by the horizontal line shadow, and the four-step access mechanism is used for access, if the determined access resource belongs to the resource identified by the vertical line shadow, the random identifier is reported in the resource identified by the vertical line shadow, and the two-step access mechanism is used for access. Optionally, if the A-IOT device is configured or instructed by the reader to use the two-step access mechanism or has been switched back from the four-step access mechanism to the two-step access mechanism, the random identifier is reported in the resource identified by the vertical line shadow, and the two-step access mechanism is used for access. If the A-IOT device is configured or instructed by the reader to use the four-step access mechanism or has been switched back from the two-step access mechanism to the four-step access mechanism, the random identifier is reported in the resource identified by the horizontal line shadow, and the four-step access mechanism is used for access. Since the resources for reporting the random identifier in the two-step access mechanism and the four-step access mechanism are orthogonal, the reader can know which resource on which the random identifier reported belongs to the four-step access mechanism, so that the feedback based on the random identifier needs to be sent, and also can know which resource on which the random identifier reported belongs to the two-step access mechanism, and can wait for the device identifier to be reported before feedback. Exemplarily, the reader feeds back based on the random identifier reported in the resource identified by the horizontal line shadow on the resource identified by the solid line without filling. When the reader feeds back based on the random identifier in the four-step access, the resource identified by the solid line without filling can be used to send the second signaling to schedule the resource for reporting the device identifier in the four-step access mechanism. Optionally, the scheduled resource for reporting the device identifier in the four-step access mechanism is the resource identified by the right oblique line shadow, and the resource for reporting the random identifier in the two-step access (the resource identified by the vertical line shadow) and the resource for reporting the device identifier in the two-step access (the resource identified by the left oblique line shadow) have a corresponding relationship, and the A-IOT device can directly determine the resource for reporting the device identifier according to the determined resource for reporting the random identifier. Therefore, when the reader schedules the resource for reporting the device identifier in the four-step access mechanism (the resource identified by the right oblique line shadow), the resource for reporting the device identifier in the four-step access mechanism (the resource identified by the right oblique line shadow) should be orthogonal to the resource for reporting the device identifier in the two-step access mechanism (the resource identified by the left oblique line shadow).Optionally, since the resources (resources marked with vertical line shading) on which the random identifier is reported in the two-step access do not necessarily all have device reported random identifier, it also means that the resources (resources marked with left diagonal line shading) on which the device identifier is reported in the two-step access mechanism do not necessarily all have device reported device identifier, therefore, when the reader sends the second signaling scheduling the resources on which the device identifier is reported in the four-step access mechanism using the resources marked with solid line without filling, it can include the resources on which the device identifier is reported in the two-step access mechanism without receiving the random identifier, that is, it includes part of the resources marked with left diagonal line shading. After the A-IOT device reports the device identifier in the two-step and / or four-step access on the resources marked with left diagonal line shading and reports the device identifier in the four-step access on the resources marked with right diagonal line shading, the reader can use the resources marked with dotted line without filling to uniformly feed back based on the reported device identifier.

[0210] Exemplarily, the counter value generated by the A-IOT device is 2, and the random access is performed in slot 2. Optionally, since the first time domain offset is contained in the QueryRep instruction of slot 1, the first time domain position can be determined according to the first time domain offset and the time domain position of the QueryRep instruction of slot 1. Optionally, in the QueryRep instruction of slot 1, some time-frequency resources in slot 2 are also indicated for the A-IOT device to report the random identifier, for example, the resources identified by the horizontal and vertical line shadows in slot 2. Among these resources, the resources located before the first time domain position are the resources for reporting the random identifier in the four-step access mechanism (i.e., the resources identified by the horizontal line shadow). Among these resources, the resources located after the first time domain position are the resources for reporting the random identifier in the two-step access mechanism (i.e., the resources identified by the vertical line shadow). Optionally, the A-IOT device randomly determines the access resource in the resources indicated by the QueryRep instruction of slot 1, if the determined access resource belongs to the resources identified by the horizontal line shadow, the four-step access mechanism is used for access in the resources identified by the horizontal line shadow for reporting the random identifier, if the determined access resource belongs to the resources identified by the vertical line shadow, the two-step access mechanism is used for access in the resources identified by the vertical line shadow for reporting the random identifier. Optionally, if the A-IOT device is configured or instructed by the reader to use the two-step access mechanism or has been switched back from the four-step access mechanism to the two-step access mechanism, the two-step access mechanism is used for access in the resources identified by the vertical line shadow for reporting the random identifier. If the A-IOT device is configured or instructed by the reader to use the four-step access mechanism or has been switched back from the two-step access mechanism to the four-step access mechanism, the four-step access mechanism is used for access in the resources identified by the horizontal line shadow for reporting the random identifier. Since the resources for reporting the random identifier in the two-step access mechanism and the four-step access mechanism are orthogonal, the reader can know which resources on which the random identifier reported belongs to the four-step access, so as to send the feedback based on the random identifier, and also can know which resources on which the random identifier reported belongs to the two-step access, and can wait for the device identifier to be reported before feeding back. Exemplarily, the reader feeds back based on the random identifier reported in the resources identified by the horizontal line shadow in the resources without filling in the solid line. When the reader feeds back based on the random identifier in the four-step access, the resources without filling in the solid line can be used to send the second signaling to schedule the resources for reporting the device identifier in the four-step access mechanism. Optionally, the scheduled resources for reporting the device identifier in the four-step access mechanism are the resources identified by the right oblique line shadow, and the resources for reporting the random identifier in the two-step access mechanism (the resources identified by the vertical line shadow) and the resources for reporting the device identifier (the resources identified by the left oblique line shadow) have a corresponding relationship, and the A-IOT device can directly determine the resources for reporting the device identifier according to the determined resources for reporting the random identifier.Therefore, the reader should ensure that the resources for reporting device identity in the four-step access mechanism (resources identified by right diagonal line shading) are orthogonal to the resources for reporting device identity in the two-step access mechanism (resources identified by left diagonal line shading) when scheduling the resources for reporting device identity in the four-step access (resources identified by right diagonal line shading). Alternatively, since the resources for reporting random identity in the two-step access mechanism (resources identified by vertical line shading) do not necessarily all have device reporting random identity, it means that the resources for reporting device identity in the two-step access mechanism (resources identified by left diagonal line shading) do not necessarily all have device reporting device identity. Therefore, when the reader transmits the second signaling using the resources with solid lines and no filling to schedule the resources for reporting device identity in the four-step access mechanism, it can include the resources for reporting device identity corresponding to the resources for which random identity is not received in the two-step access mechanism, that is, it includes part of the resources identified by left diagonal line shading. After the A-IOT device reports the device identity in the two-step and / or four-step access on the resources identified by left diagonal line shading and reports the device identity in the four-step access on the resources identified by right diagonal line shading, the reader can use the resources with dashed line identification and no filling to uniformly feedback based on the reported device identity.

[0211] Exemplarily, the counter value generated by the A-IOT device is 2^Q-1, and the random access is performed in slot 2^Q-1. Optionally, since the first frequency domain offset is contained in the QueryRep instruction of slot 2^Q-2, the first frequency domain position can be determined according to the first frequency domain offset and the starting position of the carrier. Optionally, the QueryRep instruction of slot 2^Q-2 also indicates that some time-frequency resources in slot 2^Q-1 are used for the A-IOT device to report the random identifier, for example, the resources identified by the horizontal and vertical line shadows in slot 2^Q-1. Among these resources, the resources below the first frequency domain position are the resources for reporting the random identifier in the two-step access mechanism (i.e., the resources identified by the vertical line shadow). Among these resources, the resources above the first frequency domain position are the resources for reporting the random identifier in the four-step access mechanism (i.e., the resources identified by the horizontal line shadow). Optionally, the A-IOT device randomly determines the access resource in the resource indicated by the QueryRep instruction of slot 2^Q-2, if the determined access resource belongs to the resources identified by the horizontal line shadow, the four-step access mechanism is used for access in the resources identified by the horizontal line shadow to report the random identifier, if the determined access resource belongs to the resources identified by the vertical line shadow, the two-step access mechanism is used for access in the resources identified by the vertical line shadow to report the random identifier. Optionally, if the A-IOT device is configured or instructed by the reader to use the two-step access mechanism or has been switched back from the four-step access mechanism to the two-step access mechanism, the two-step access mechanism is used for access in the resources identified by the vertical line shadow to report the random identifier. If the A-IOT device is configured or instructed by the reader to use the four-step access mechanism or has been switched back from the two-step access mechanism to the four-step access mechanism, the four-step access mechanism is used for access in the resources identified by the horizontal line shadow to report the random identifier. Since the resources for reporting the random identifier in the two-step access mechanism and the four-step access mechanism are orthogonal, the reader can know which resources on which the random identifier reported belong to the four-step access, so that the feedback based on the random identifier needs to be sent, and also can know which resources on which the random identifier reported belong to the two-step access, and can wait for the device identifier to be reported before feeding back. Exemplarily, the reader feeds back based on the random identifier reported by the resources identified by the horizontal line shadow in the resources without filling in the solid line. When the reader feeds back based on the random identifier of the four-step access, the resources without filling in the solid line can be used to send the second signaling to schedule the resources for reporting the device identifier in the four-step access mechanism. Optionally, the scheduled resources for reporting the device identifier in the four-step access mechanism are the resources identified by the right oblique line shadow, and the resources for reporting the random identifier in the two-step access mechanism (the resources identified by the vertical line shadow) and the resources for reporting the device identifier (the resources identified by the left oblique line shadow) have a corresponding relationship, and the A-IOT device can directly determine the resources for reporting the device identifier according to the determined resources for reporting the random identifier.Therefore, the reader should ensure that the resource for reporting the device identifier in the four-step access mechanism (the resource marked by the right diagonal line shadow) is orthogonal to the resource for reporting the device identifier in the two-step access mechanism (the resource marked by the left diagonal line shadow) when scheduling the resource for reporting the device identifier in the four-step access (the resource marked by the right diagonal line shadow). Alternatively, since the resource for reporting the random identifier (the resource marked by the vertical line shadow) in the two-step access mechanism does not necessarily have the device reporting the random identifier, it means that the resource for reporting the device identifier (the resource marked by the left diagonal line shadow) in the two-step access mechanism does not necessarily have the device reporting the device identifier. Therefore, when the reader transmits the second signaling using the resource marked by the solid line without filling to schedule the resource for reporting the device identifier in the four-step access mechanism, the resource for reporting the device identifier corresponding to the resource for reporting the random identifier which is not received in the two-step access mechanism can be included, that is, part of the resource marked by the left diagonal line shadow. When the A-IOT device reports the device identifier in the two-step and / or four-step access on the resource marked by the left diagonal line shadow and reports the device identifier in the four-step access on the resource marked by the right diagonal line shadow, the reader can use the resource marked by the dashed line without filling to uniformly feed back based on the reported device identifier.

[0212] It can be understood that in this embodiment, each slot can include the resource corresponding to the two-step access mechanism and the resource corresponding to the four-step access mechanism, and the resource corresponding to the two-step access mechanism and the resource corresponding to the four-step access mechanism are not completely orthogonal. For example, the resource used in some steps of the two-step access mechanism and the resource used in some steps of the four-step access mechanism do not overlap, for example, the resource for reporting the random identifier does not overlap, and the resource for reporting the device identifier can not overlap. At the same time, the resources of some steps can overlap, for example, the four-step access mechanism can use the resource for reporting the device identifier which is not used in the two-step access mechanism, and the reader can uniformly schedule the resource to feed back the device identifier reported in the two-step and four-step access mechanisms. This embodiment can improve the resource utilization rate.

[0213] Case 3

[0214] In some embodiments, the resource corresponding to the first access mechanism includes a resource for reporting a device identifier by the first communication device.

[0215] In the case where the first access mechanism is the two-step access mechanism, if the two-step access mechanism adopts the access procedure shown in FIG. 9, subgraph 3, the resource corresponding to the first access mechanism includes a resource for reporting a device identifier by the first communication device.

[0216] In the case that the first access mechanism is the two-step access mechanism, if the two-step access mechanism adopts the access procedure shown in FIG. 9, subgraph 4, the resource corresponding to the first access mechanism includes: a resource for the first communication device to report the random identifier and the device identifier. It can be understood that the random identifier and the device identifier are reported on the same message or the same resource at this time, and therefore the resource for reporting the device identifier in this embodiment can refer to the resource for reporting the random identifier and the device identifier in this case, that is, the method described in this embodiment is also applicable to the case where the resource corresponding to the first access mechanism includes the resource for reporting the random identifier and the device identifier, and the random identifier and the device identifier are transmitted on the same resource.

[0217] Exemplarily, the device identifier is EPC, and the resource corresponding to the first access mechanism includes: a resource for the first communication device to report the EPC.

[0218] Exemplarily, the device identifier is EPC, the random identifier is RN16, and the resource corresponding to the first access mechanism includes: a resource for the first communication device to report the EPC and the RN16.

[0219] In some embodiments, the resource corresponding to the second access mechanism includes: a resource for the first communication device to report the random identifier.

[0220] In the case that the second access mechanism is the four-step access mechanism or the three-step access mechanism, the resource corresponding to the second access mechanism includes: a resource for the first communication device to report the random identifier.

[0221] Exemplarily, the random identifier is RN16, and the resource corresponding to the second access mechanism includes: a resource for the first communication device to report the RN16.

[0222] For this case 3, the resource for the first communication device to report the device identifier, or the resource for reporting the random identifier and the device identifier, included in the resource corresponding to the first access mechanism is orthogonal to the resource for the first communication device to report the random identifier included in the resource corresponding to the second access mechanism. In other words, the resource for reporting the device identifier, or the resource for reporting the random identifier and the device identifier, in the first access mechanism is orthogonal to the resource for reporting the random identifier in the second access mechanism.

[0223] In some embodiments, the first signaling contains at least one of the following: a first time domain indication field, a first frequency domain indication field, a second time domain indication field, and a second frequency domain indication field. The first time domain indication field is used to indicate the time domain resource corresponding to the first access mechanism (i.e., the time domain resource for reporting the device identifier in the first access mechanism, or the time domain resource for reporting the random identifier and the device identifier), the first frequency domain indication field is used to indicate the frequency domain resource corresponding to the first access mechanism (i.e., the frequency domain resource for reporting the device identifier in the first access mechanism, or the frequency domain resource for reporting the random identifier and the device identifier), the second time domain indication field is used to indicate the time domain resource corresponding to the second access mechanism (i.e., the time domain resource for reporting the random identifier in the second access mechanism), and the second frequency domain indication field is used to indicate the frequency domain resource corresponding to the second access mechanism (i.e., the frequency domain resource for reporting the random identifier in the second access mechanism).

[0224] In some embodiments, the time domain resource refers to a transmission resource divided and managed in the time domain, which can be a time slot, an OFDM symbol, a frame, a subframe, or other time range. The frequency domain resource refers to a transmission resource divided and managed in the frequency domain, which can be a PRB, a channel, a grid, or other frequency range.

[0225] In some embodiments, the first signaling contains a first time domain offset, which is used to determine the resource corresponding to the first access mechanism and / or the resource corresponding to the second access mechanism.

[0226] In some embodiments, the resource before the first time domain position is the resource corresponding to the first access mechanism (i.e., the resource for reporting the device identifier in the first access mechanism, or the resource for reporting the random identifier and the device identifier), and the resource after the first time domain position is the resource corresponding to the second access mechanism (i.e., the resource for reporting the random identifier in the second access mechanism); or, the resource before the first time domain position is the resource corresponding to the second access mechanism (i.e., the resource for reporting the random identifier in the second access mechanism), and the resource after the first time domain position is the resource corresponding to the first access mechanism (i.e., the resource for reporting the device identifier in the first access mechanism, or the resource for reporting the random identifier and the device identifier); wherein the first time domain position is determined according to the time domain position corresponding to the first signaling and the first time domain offset.

[0227] Optionally, the resource corresponding to the first time domain position (or the resource at the first time domain position) can be the resource corresponding to the first access mechanism, or the resource corresponding to the second access mechanism. Optionally, the resource corresponding to the first time domain position (or the resource at the first time domain position) can be the resource for reporting the device identifier in the first access mechanism, or the resource for reporting the random identifier and the device identifier, or the resource for reporting the random identifier in the second access mechanism.

[0228] Optionally, the first time domain position is determined according to a time domain position corresponding to the first signaling plus a first time domain offset.

[0229] Optionally, the unit of the first time domain offset can be a time slot, an OFDM symbol, ms (millisecond), us (microsecond), etc., which are not limited in the application.

[0230] Optionally, the first time domain position can be a time slot, an OFDM symbol, or a time point (in ms or us), etc., which are not limited in the application.

[0231] In some embodiments, the first signaling contains a first frequency domain offset, and the first frequency domain offset is used to determine the resource corresponding to the first access mechanism and / or the resource corresponding to the second access mechanism.

[0232] In some embodiments, the resource lower than the first frequency domain position is the resource corresponding to the first access mechanism (i.e., the resource reporting the device identifier in the first access mechanism, or the resource reporting the random identifier and the device identifier), and the resource higher than the first frequency domain position is the resource corresponding to the second access mechanism (i.e., the resource reporting the random identifier in the second access mechanism); or, the resource lower than the first frequency domain position is the resource corresponding to the second access mechanism (i.e., the resource reporting the random identifier in the second access mechanism), and the resource higher than the first frequency domain position is the resource corresponding to the first access mechanism (i.e., the resource reporting the device identifier in the first access mechanism, or the resource reporting the random identifier and the device identifier); wherein the first frequency domain position is determined according to the first frequency domain offset and one of the following: the frequency domain position corresponding to the first signaling, the frequency domain position of the carrier, and the frequency domain position of the BWP (Bandwidth Part).

[0233] Optionally, the resource corresponding to the first frequency domain position (or the resource at the first frequency domain position) can be the resource corresponding to the first access mechanism, or the resource corresponding to the second access mechanism. Optionally, the resource corresponding to the first frequency domain position (or the resource at the first frequency domain position) can be the resource reporting the device identifier or the resource reporting the random identifier and the device identifier in the first access mechanism, or the resource reporting the random identifier in the second access mechanism.

[0234] Optionally, the first frequency domain position is determined according to the frequency domain position corresponding to the first signaling or the frequency domain position of the carrier or the frequency domain position of the BWP, plus or minus the first frequency domain offset. Exemplarily, the frequency domain position of the carrier is the frequency domain start position of the carrier, i.e., the lowest frequency domain position in the frequency range corresponding to the carrier. Exemplarily, the frequency domain position of the BWP is the frequency domain start position of the BWP, i.e., the lowest frequency domain position in the frequency range corresponding to the BWP.

[0235] Optionally, the unit of the first frequency domain offset can be a number of grids, a number of channels, a number of PRBs, or Hz, etc., which are not limited in the present application.

[0236] Optionally, the first frequency domain position can be a certain grid, a certain channel, a certain PRB, or a certain frequency point (unit Hz), etc., which are not limited in the present application.

[0237] In some embodiments, the second communication device sends second signaling, and accordingly, the first communication device receives the second signaling sent by the second communication device, and the second signaling is used to indicate the resource for reporting the device identifier in the second access mechanism.

[0238] In some embodiments, the resource for reporting the device identifier in the second access mechanism is orthogonal to the resource for reporting the device identifier in the first access mechanism, or the resource for reporting the device identifier in the second access mechanism is orthogonal to the resource for reporting the random identifier and the device identifier in the first access mechanism.

[0239] In some embodiments, as shown in FIG. 14, first, the reader sends a select instruction, and the select instruction is used to determine a device set for inventory, for example, a large number of devices exist in the warehouse, and the select instruction is needed to determine the device for inventory, that is, the device receives the select instruction and judges whether to participate in the inventory. After the select instruction, the reader sends a Query instruction, and the Q value is included in the Query instruction. After the device for inventory obtains the Q value, a random integer between 0 and 2^Q-1 is generated, for example, as a counter. After that, each time the QueryRep instruction is received, that is, each new slot is started, the counter of each device is reduced by 1, and when the counter of the device is reduced to 0, the device can access in the corresponding slot.

[0240] Based on the indication of the Query instruction or the QueryRep instruction, the A-IOT device can use the two-step access mechanism or the four-step access mechanism in each time slot.

[0241] Exemplarily, the counter value generated by the A-IOT device is 0, and the random access is performed in slot 0. Optionally, since the first time domain indication field and the first frequency domain indication field are included in the Query instruction, the resources for reporting the device identifier in the two-step access mechanism are indicated, that is, the resources indicated by the left diagonal line shadow. Since the second time domain indication field and the second frequency domain indication field are also included in the Query instruction, the resources for reporting the random identifier in the four-step access mechanism are indicated, that is, the resources indicated by the horizontal line shadow. Optionally, the A-IOT device randomly determines the access resource in the resource indicated by the Query instruction, if the determined access resource belongs to the resources indicated by the horizontal line shadow, the four-step access mechanism is used to access in the resources indicated by the horizontal line shadow to report the random identifier, if the determined access resource belongs to the resources indicated by the left diagonal line shadow, the two-step access mechanism is used to access in the resources indicated by the left diagonal line shadow to report the device identifier. Optionally, if the A-IOT device is configured or instructed by the reader to use the two-step access mechanism or has been switched back from the four-step access mechanism to the two-step access mechanism, the two-step access mechanism is used to access in the resources indicated by the left diagonal line shadow to report the device identifier. If the A-IOT device is configured or instructed by the reader to use the four-step access mechanism or has been switched back from the two-step access mechanism to the four-step access mechanism, the four-step access mechanism is used to access in the resources indicated by the horizontal line shadow to report the random identifier. Since the resources for reporting the device identifier in the two-step access mechanism and the resources for reporting the random identifier in the four-step access mechanism are orthogonal, the reader can know which resources report the random identifier belonging to the four-step access, so that the feedback based on the random identifier needs to be sent, and also can know which resources report the device identifier belonging to the two-step access, so that the feedback based on the device identifier needs to be sent. Exemplarily, the reader feeds back based on the random identifier reported by the resources indicated by the horizontal line shadow in the resources indicated by the solid line without filling. When the reader feeds back based on the random identifier of the four-step access, the resources indicated by the solid line without filling can be used to send the second signaling to schedule the resources for reporting the device identifier in the four-step access mechanism. Optionally, the scheduled resources for reporting the device identifier in the four-step access mechanism are the resources indicated by the right diagonal line shadow, and when the reader schedules the resources for reporting the device identifier in the four-step access mechanism (the resources indicated by the right diagonal line shadow), the resources for reporting the device identifier in the four-step access mechanism (the resources indicated by the right diagonal line shadow) should be ensured to be orthogonal to the resources for reporting the device identifier in the two-step access mechanism (the resources indicated by the left diagonal line shadow). When the A-IOT device reports the device identifier in the two-step access in the resources indicated by the left diagonal line shadow and reports the device identifier in the four-step access in the resources indicated by the right diagonal line shadow, the reader can use the resources indicated by the dashed line without filling to uniformly feed back based on the reported device identifier.

[0242] For example, the counter value generated by the A-IOT device is 2, and the random access is performed in slot 2. Optionally, the first time domain position is determined according to the first time domain offset and the time domain position of the QueryRep instruction in slot 1. Optionally, the QueryRep instruction in slot 1 also indicates that some time-frequency resources in slot 2 are used for the A-IOT device to report the random identifier and the device identifier, for example, the resources identified by the horizontal line and the left oblique line shadow in slot 2. Among these resources, the resources located before the first time domain position are the resources for reporting the random identifier in the four-step access mechanism (i.e., the resources identified by the horizontal line shadow). Among these resources, the resources located after the first time domain position are the resources for reporting the device identifier in the two-step access mechanism (i.e., the resources identified by the left oblique line shadow). Optionally, the A-IOT device randomly determines the access resource in the resources indicated by the QueryRep instruction in slot 1. If the determined access resource belongs to the resources identified by the horizontal line shadow, the A-IOT device performs the access using the four-step access mechanism in the resources identified by the horizontal line shadow to report the random identifier. If the determined access resource belongs to the resources identified by the left oblique line shadow, the A-IOT device performs the access using the two-step access mechanism in the resources identified by the left oblique line shadow to report the device identifier. Optionally, if the A-IOT device is configured or instructed by the reader to use the two-step access mechanism or has already switched back / switched from the four-step access mechanism to the two-step access mechanism, the A-IOT device performs the access using the two-step access mechanism in the resources identified by the left oblique line shadow to report the device identifier. If the A-IOT device is configured or instructed by the reader to use the four-step access mechanism or has already switched back / switched from the two-step access mechanism to the four-step access mechanism, the A-IOT device performs the access using the four-step access mechanism in the resources identified by the horizontal line shadow to report the random identifier. Since the resources for reporting the device identifier in the two-step access mechanism and the resources for reporting the random identifier in the four-step access mechanism are orthogonal, the reader can know which resources report the random identifier belonging to the four-step access, so that the feedback based on the random identifier needs to be sent, and also can know which resources report the device identifier belonging to the two-step access, so that the feedback based on the device identifier needs to be sent. For example, the reader feeds back based on the random identifier reported by the resources identified by the horizontal line shadow in the four-step access in the resources without filling of the solid line. When the reader feeds back based on the random identifier in the four-step access, the resources without filling of the solid line can be used to send the second signaling to schedule the resources for reporting the device identifier in the four-step access mechanism. Optionally, the scheduled resources for reporting the device identifier in the four-step access mechanism are the resources identified by the right oblique line shadow, and when the reader schedules the resources for reporting the device identifier in the four-step access mechanism (the resources identified by the right oblique line shadow), the resources for reporting the device identifier in the four-step access mechanism (the resources identified by the right oblique line shadow) should be orthogonal to the resources for reporting the device identifier in the two-step access mechanism (the resources identified by the left oblique line shadow).When the A-IOT device reports the device identifier in the two-step access and the device identifier in the four-step access on the resources identified by the left diagonal line shadow and the right diagonal line shadow respectively, the reader can use the resources identified by the dashed line without filling to uniformly feed back based on the reported device identifier.

[0243] Exemplarily, the counter value generated by the A-IOT device is 2^Q-1, and the random access is performed in slot 2^Q-1. Optionally, since the first frequency domain offset is contained in the QueryRep instruction of slot 2^Q-2, the first frequency domain position can be determined according to the first frequency domain offset and the starting position of the carrier. Optionally, the QueryRep instruction of slot 2^Q-2 also indicates that some time-frequency resources in slot 2^Q-1 are used for the A-IOT device to report the random identifier and the device identifier, for example, the resources identified by the horizontal line and the left oblique line shadow in slot 2^Q-1. Among these resources, the resources below the first frequency domain position are the resources for reporting the device identifier in the two-step access mechanism (i.e., the resources identified by the left oblique line shadow). Among these resources, the resources above the first frequency domain position are the resources for reporting the random identifier in the four-step access mechanism (i.e., the resources identified by the horizontal line shadow). Optionally, the A-IOT device randomly determines the access resource in the resources indicated by the QueryRep instruction of slot 2^Q-2, if the determined access resource belongs to the resources identified by the horizontal line shadow, the random identifier is reported in the resources identified by the horizontal line shadow, and the four-step access mechanism is used for access, if the determined access resource belongs to the resources identified by the left oblique line shadow, the device identifier is reported in the resources identified by the left oblique line shadow, and the two-step access mechanism is used for access. Optionally, if the A-IOT device is configured or instructed by the reader to use the two-step access mechanism or has been switched back from the four-step access mechanism to the two-step access mechanism, the device identifier is reported in the resources identified by the left oblique line shadow, and the two-step access mechanism is used for access. If the A-IOT device is configured or instructed by the reader to use the four-step access mechanism or has been switched back from the two-step access mechanism to the four-step access mechanism, the random identifier is reported in the resources identified by the horizontal line shadow, and the four-step access mechanism is used for access. Since the resources for reporting the device identifier in the two-step access mechanism and the resources for reporting the random identifier in the four-step access mechanism are orthogonal, the reader can know which resources report the random identifier belonging to the four-step access, so that the feedback based on the random identifier needs to be sent, and also can know which resources report the device identifier belonging to the two-step access, so that the feedback based on the device identifier needs to be sent. Exemplarily, the reader feeds back based on the random identifier reported by the four-step access in the resources identified by the horizontal line shadow. When the reader feeds back based on the random identifier of the four-step access, the resources without filling in the solid line can be used to send the second signaling to schedule the resources for reporting the device identifier in the four-step access mechanism.Optionally, the resource for reporting the device identifier in the scheduled four-step access mechanism is the resource marked by the right oblique line shadow. When the reader reports the resource for reporting the device identifier in the four-step access mechanism (the resource marked by the right oblique line shadow), the reader should ensure that the resource for reporting the device identifier in the four-step access mechanism (the resource marked by the right oblique line shadow) is orthogonal to the resource for reporting the device identifier in the two-step access mechanism (the resource marked by the left oblique line shadow). After the A-IOT device reports the device identifier in the two-step access mechanism on the resource marked by the left oblique line shadow and reports the device identifier in the four-step access mechanism on the resource marked by the right oblique line shadow, the reader can use the resource marked by the dashed line without filling to uniformly feed back based on the reported device identifier.

[0244] It can be understood that, in this embodiment, each slot can include both the resource corresponding to the two-step access mechanism and the resource corresponding to the four-step access mechanism, and the resource corresponding to the two-step access mechanism and the resource corresponding to the four-step access mechanism are not completely orthogonal. For example, the resource used in some steps of the two-step access mechanism does not overlap with the resource used in some steps of the four-step access mechanism, for example, the resource for reporting the device identifier in the two-step access mechanism and the resource for reporting the random identifier in the four-step access mechanism and the resource for reporting the device identifier do not overlap. At the same time, the resource of some steps can overlap, for example, the reader can uniformly schedule the resource to feed back the device identifier reported in the two-step and four-step access mechanisms. This embodiment can improve the resource utilization rate.

[0245] In some embodiments, the A-IOT device can report the device identifier and the random identifier together on the resource for reporting the device identifier in the two-step access mechanism.

[0246] The steps related to the first communication device described above can be implemented alone to become a determination method of the access resource on the side of the first communication device; and the steps related to the second communication device described above can be implemented alone to become an indication method of the access resource on the side of the second communication device.

[0247] The following is an apparatus embodiment of the present application. For details not described in the apparatus embodiment of the present application, reference can be made to the method embodiment of the present application.

[0248] Please refer to FIG. 15, which shows a block diagram of an access resource determination apparatus according to an embodiment of the present application. The apparatus has the function of implementing the method performed by the first communication device described above, which can be implemented by hardware or by executing corresponding software by hardware. The apparatus can be the first communication device described above or can be arranged in the first communication device. The apparatus 1500 can include a processing module 1510.

[0249] The processing module 1510 is configured to determine resources corresponding to the first access mechanism and / or the second access mechanism according to the first signaling sent by the second communication device, wherein the first access mechanism and the second access mechanism are two different access mechanisms.

[0250] In some embodiments, the first signaling is used to indicate the resources corresponding to the first access mechanism and / or the resources corresponding to the second access mechanism.

[0251] In some embodiments, the first signaling includes at least one of the following: a first time domain indication field used to indicate time domain resources corresponding to the first access mechanism; a first frequency domain indication field used to indicate frequency domain resources corresponding to the first access mechanism; a second time domain indication field used to indicate time domain resources corresponding to the second access mechanism; and a second frequency domain indication field used to indicate frequency domain resources corresponding to the second access mechanism.

[0252] In some embodiments, the first signaling includes a first time domain offset used to determine the resources corresponding to the first access mechanism and / or the resources corresponding to the second access mechanism.

[0253] In some embodiments, resources before a first time domain position are the resources corresponding to the first access mechanism, and resources after the first time domain position are the resources corresponding to the second access mechanism; or, resources before the first time domain position are the resources corresponding to the second access mechanism, and resources after the first time domain position are the resources corresponding to the first access mechanism; wherein the first time domain position is determined according to a time domain position corresponding to the first signaling and the first time domain offset.

[0254] In some embodiments, the first signaling includes a first frequency domain offset used to determine the resources corresponding to the first access mechanism and / or the resources corresponding to the second access mechanism.

[0255] In some embodiments, resources below a first frequency domain position are the resources corresponding to the first access mechanism, and resources above the first frequency domain position are the resources corresponding to the second access mechanism; or, resources below the first frequency domain position are the resources corresponding to the second access mechanism, and resources above the first frequency domain position are the resources corresponding to the first access mechanism; wherein the first frequency domain position is determined according to the first frequency domain offset and one of the following: a frequency domain position corresponding to the first signaling, a frequency domain position of a carrier, and a frequency domain position of a bandwidth part (BWP).

[0256] In some embodiments, the resources corresponding to the first access mechanism are orthogonal to the resources corresponding to the second access mechanism.

[0257] In some embodiments, the resource corresponding to the first access mechanism comprises: a resource on which the first communication device reports a device identifier, and a resource on which the second communication device feeds back based on the device identifier; or the resource corresponding to the first access mechanism comprises: a resource on which the first communication device reports a random identifier and a device identifier, and a resource on which the second communication device feeds back based on the random identifier and the device identifier; and / or the resource corresponding to the second access mechanism comprises: a resource on which the first communication device reports a random identifier, a resource on which the second communication device feeds back based on the random identifier, a resource on which the first communication device reports a device identifier, and a resource on which the second communication device feeds back based on the device identifier; or the resource corresponding to the second access mechanism comprises: a resource on which the first communication device reports a random identifier, a resource on which the second communication device feeds back based on the random identifier, and a resource on which the first communication device reports a device identifier.

[0258] In some embodiments, the resource corresponding to the first access mechanism comprises: a resource on which the first communication device reports a random identifier; and / or the resource corresponding to the second access mechanism comprises: a resource on which the first communication device reports a random identifier.

[0259] In some embodiments, the resource on which the first communication device reports a random identifier in the first access mechanism and the resource on which the first communication device reports a device identifier in the first access mechanism have a corresponding relationship.

[0260] In some embodiments, as shown in FIG. 15, the apparatus 1500 further comprises a receiving module 1520 configured to receive second signaling sent by the second communication device, the second signaling being used to indicate a resource on which a device identifier is reported in the second access mechanism; wherein the resource on which the device identifier is reported in the second access mechanism is orthogonal to the resource on which the device identifier is reported in the first access mechanism; or the resource on which the device identifier is reported in the second access mechanism comprises the resource on which the device identifier is reported in the first access mechanism.

[0261] In some embodiments, the resource corresponding to the first access mechanism comprises: a resource on which the first communication device reports a device identifier, or a resource on which the first communication device reports a random identifier and a device identifier; and / or the resource corresponding to the second access mechanism comprises: a resource on which the first communication device reports a random identifier.

[0262] In some embodiments, the apparatus 1500 further includes a receiving module 1520 configured to receive second signaling sent by the second communication device, the second signaling being used to indicate resources for reporting device identity in the second access mechanism; wherein the resources for reporting device identity in the second access mechanism are orthogonal to the resources for reporting device identity in the first access mechanism, or the resources for reporting device identity in the second access mechanism are orthogonal to the resources for reporting random identity and device identity in the first access mechanism.

[0263] In some embodiments, the processing module 1510 is further configured to randomly determine a first resource, the first resource being a resource used by the first communication device for access; if the first resource belongs to the resources corresponding to the first access mechanism, access is performed using the first access mechanism; if the first resource belongs to the resources corresponding to the second access mechanism, access is performed using the second access mechanism.

[0264] In some embodiments, the processing module 1510 is further configured to, if the first communication device uses the first access mechanism, access in the resources corresponding to the first access mechanism; if the first communication device uses the second access mechanism, access in the resources corresponding to the second access mechanism.

[0265] In some embodiments, the first access mechanism is a two-step access mechanism, and the second access mechanism is a four-step access mechanism or a three-step access mechanism.

[0266] In some embodiments, the first communication device is an A-IOT device, and the second communication device is a network device or an intermediate node.

[0267] Please refer to FIG. 16, which shows a block diagram of an apparatus for indicating access resources according to an embodiment of the present application. The apparatus has functions of implementing the method performed by the second communication device, which can be implemented by hardware, or by executing corresponding software by hardware. The apparatus can be the second communication device, or can be arranged in the second communication device. The apparatus 1600 can include a sending module 1610.

[0268] The sending module 1610 is configured to send first signaling to the first communication device, the first signaling being used to indicate resources corresponding to the first access mechanism and / or resources corresponding to the second access mechanism, wherein the first access mechanism and the second access mechanism are two different access mechanisms.

[0269] In some embodiments, the first signaling comprises at least one of: a first time domain indication field for indicating time domain resources corresponding to the first access mechanism; a first frequency domain indication field for indicating frequency domain resources corresponding to the first access mechanism; a second time domain indication field for indicating time domain resources corresponding to the second access mechanism; a second frequency domain indication field for indicating frequency domain resources corresponding to the second access mechanism.

[0270] In some embodiments, the first signaling comprises a first time domain offset for determining resources corresponding to the first access mechanism and / or resources corresponding to the second access mechanism.

[0271] In some embodiments, resources before a first time domain position are resources corresponding to the first access mechanism, and resources after the first time domain position are resources corresponding to the second access mechanism; or, resources before the first time domain position are resources corresponding to the second access mechanism, and resources after the first time domain position are resources corresponding to the first access mechanism; wherein the first time domain position is determined according to a time domain position corresponding to the first signaling and the first time domain offset.

[0272] In some embodiments, the first signaling comprises a first frequency domain offset for determining resources corresponding to the first access mechanism and / or resources corresponding to the second access mechanism.

[0273] In some embodiments, resources below a first frequency domain position are resources corresponding to the first access mechanism, and resources above the first frequency domain position are resources corresponding to the second access mechanism; or, resources below the first frequency domain position are resources corresponding to the second access mechanism, and resources above the first frequency domain position are resources corresponding to the first access mechanism; wherein the first frequency domain position is determined according to the first frequency domain offset and one of: a frequency domain position corresponding to the first signaling, a frequency domain position of a carrier, a frequency domain position of a bandwidth part (BWP).

[0274] In some embodiments, resources corresponding to the first access mechanism are orthogonal to resources corresponding to the second access mechanism.

[0275] In some embodiments, the resource corresponding to the first access mechanism comprises: a resource on which the first communication device reports a device identifier, and a resource on which the second communication device feeds back based on the device identifier; or the resource corresponding to the first access mechanism comprises: a resource on which the first communication device reports a random identifier and a device identifier, and a resource on which the second communication device feeds back based on the random identifier and the device identifier; and / or the resource corresponding to the second access mechanism comprises: a resource on which the first communication device reports a random identifier, a resource on which the second communication device feeds back based on the random identifier, a resource on which the first communication device reports a device identifier, and a resource on which the second communication device feeds back based on the device identifier; or the resource corresponding to the second access mechanism comprises: a resource on which the first communication device reports a random identifier, a resource on which the second communication device feeds back based on the random identifier, and a resource on which the first communication device reports a device identifier.

[0276] In some embodiments, the resource corresponding to the first access mechanism comprises: a resource on which the first communication device reports a random identifier; and / or the resource corresponding to the second access mechanism comprises: a resource on which the first communication device reports a random identifier.

[0277] In some embodiments, the resource on which the first communication device reports a random identifier in the first access mechanism and the resource on which the first communication device reports a device identifier in the first access mechanism have a corresponding relationship.

[0278] In some embodiments, the sending module 1610 is further configured to send, to the first communication device, second signaling used to indicate a resource on which a device identifier is reported in the second access mechanism; wherein the resource on which the device identifier is reported in the second access mechanism is orthogonal to the resource on which the device identifier is reported in the first access mechanism; or the resource on which the device identifier is reported in the second access mechanism comprises the resource on which the device identifier is reported in the first access mechanism.

[0279] In some embodiments, the resource corresponding to the first access mechanism comprises: a resource on which the first communication device reports a device identifier, or a resource on which the first communication device reports a random identifier and a device identifier; and / or the resource corresponding to the second access mechanism comprises: a resource on which the first communication device reports a random identifier.

[0280] In some embodiments, the sending module 1610 is further configured to send, to the first communication device, second signaling used to indicate a resource on which a device identifier is reported in the second access mechanism; wherein the resource on which the device identifier is reported in the second access mechanism is orthogonal to the resource on which the device identifier is reported in the first access mechanism, or the resource on which the device identifier is reported in the second access mechanism is orthogonal to the resource on which the random identifier and the device identifier are reported in the first access mechanism.

[0281] In some embodiments, if the first resource randomly determined by the first communication device belongs to the resource corresponding to the first access mechanism, the first communication device accesses using the first access mechanism; if the first resource randomly determined by the first communication device belongs to the resource corresponding to the second access mechanism, the first communication device accesses using the second access mechanism; wherein the first resource is the resource used by the first communication device for access.

[0282] In some embodiments, if the first communication device uses the first access mechanism, the first communication device accesses in the resource corresponding to the first access mechanism; if the first communication device uses the second access mechanism, the first communication device accesses in the resource corresponding to the second access mechanism.

[0283] In some embodiments, the first access mechanism is a two-step access mechanism, and the second access mechanism is a four-step access mechanism or a three-step access mechanism.

[0284] In some embodiments, the first communication device is an A-IOT device, and the second communication device is a network device or an intermediate node.

[0285] It should be noted that the apparatus provided by the above embodiments is used to implement its functions, and the above-mentioned various functional modules are only used as examples for division, and in actual application, the above functions can be completed by different functional modules according to actual needs, that is, the content structure of the device is divided into different functional modules to complete all or part of the functions described above.

[0286] As for the apparatus in the above embodiments, the specific manner in which each module performs operations has been described in detail in the embodiments of the method, and will not be described in detail here. For details not described in detail in the apparatus embodiments, refer to the above method embodiments.

[0287] Please refer to FIG. 17, which shows a structural schematic diagram of a communication device provided by an embodiment of the present application. The communication device 1700 can include a processor 1701, a transceiver 1702, and a memory 1703. The transceiver 1702 is used to implement the sending and / or receiving functions, such as the functions of the above-mentioned sending module and / or receiving module. The processor 1701 can be used to implement other processing functions or control the sending and / or receiving.

[0288] The processor 1701 includes one or more processing cores. The processor 1701 performs various functional applications and information processing by running software programs and modules.

[0289] The transceiver 1702 can include a receiver and a transmitter, which can be implemented as a same wireless communication component, and can include a wireless communication chip and a radio frequency antenna.

[0290] The memory 1703 can be connected with the processor 1701 and the transceiver 1702.

[0291] The memory 1703 can be used to store a computer program executed by the processor 1701.

[0292] In some embodiments, when the communication device is the first communication device, the processor 1701 is configured to determine, according to the first signaling sent by the second communication device, resources corresponding to the first access mechanism and / or the second access mechanism, wherein the first access mechanism and the second access mechanism are two different access mechanisms.

[0293] In some embodiments, when the communication device is the second communication device, the transceiver 1702 is configured to send, to the first communication device, first signaling used to indicate resources corresponding to the first access mechanism and / or resources corresponding to the second access mechanism, wherein the first access mechanism and the second access mechanism are two different access mechanisms.

[0294] For details not described in the present embodiment, refer to the above embodiments, which will not be repeated here.

[0295] In addition, the memory can be implemented by any type of volatile or non-volatile storage devices or a combination thereof, including but not limited to: magnetic or optical disks, electrically erasable programmable read-only memories, erasable programmable read-only memories, static random access memories, read-only memories, magnetic memories, flash memories, programmable read-only memories.

[0296] The embodiment of the present application further provides a computer readable storage medium, wherein the storage medium stores a computer program, and the computer program is used to be executed by a processor to implement the method for determining access resources on the side of the first communication device or the method for indicating access resources on the side of the second communication device. In some embodiments, the computer readable storage medium can include a ROM (Read-Only Memory), a RAM (Random-Access Memory), a SSD (Solid State Drives) or an optical disc, etc. The RAM can include a ReRAM (Resistance Random Access Memory) and a DRAM (Dynamic Random Access Memory).

[0297] The embodiment of the present application further provides a chip, which includes a programmable logic circuit and / or program instructions, and when the chip is running, is used to implement the method for determining access resources on the side of the first communication device or the method for indicating access resources on the side of the second communication device.

[0298] The embodiment of the present application further provides a computer program product, which includes computer instructions stored in a computer readable storage medium, and a processor reads and executes the computer instructions from the computer readable storage medium to implement the method for determining access resources on the side of the first communication device or the method for indicating access resources on the side of the second communication device.

[0299] It should be understood that the "indication" mentioned in the embodiments of the present application can be direct indication, indirect indication, or can be an indication having an associated relationship. For example, A indicates B, which can mean that A directly indicates B, for example, B can obtain through A; or can mean that A indirectly indicates B, for example, A indicates C, and B can obtain through C; or can mean that A and B have an associated relationship.

[0300] In the description of the embodiments of the present application, the term "corresponding" can mean that there is a direct or indirect corresponding relationship between the two, or can mean that there is an associated relationship between the two, or can mean an indication and being indicated, configuration and being configured, etc.

[0301] In some embodiments of the present application, "predefined" can be realized by pre-storing corresponding codes, tables or other means for indicating related information in devices (for example, including terminal devices and network devices), and the present application does not limit the specific implementation manner thereof. For example, predefined can mean defined in a protocol.

[0302] In some embodiments of the present application, the "protocol" can refer to a standard protocol in the communication field, which can include the LTE protocol, the NR protocol, and related protocols applied in future communication systems, and the present application is not limited thereto.

[0303] "Multiple" mentioned in the present application refers to two or more. "And / or" describes the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B can represent the following three cases: A exists alone, A and B exist together, and B exists alone. The character " / " generally represents that the associated objects before and after it are in an "or" relationship.

[0304] "Greater than or equal to" mentioned in the present application can mean greater than or equal to, and "less than or equal to" can mean less than or equal to.

[0305] In addition, the step numbers described in the present application only exemplarily show a possible execution order between the steps, and in some other embodiments, the above steps can also be executed in a sequence different from the number, such as two different numbered steps are executed simultaneously, or two different numbered steps are executed in an order opposite to the illustration, and the embodiments of the present application are not limited thereto.

[0306] Those skilled in the art should realize that in one or more of the above examples, the functions described in the embodiments of the present application can be realized by hardware, software, firmware or any combination thereof. When realized by software, these functions can be stored in a computer readable medium or transmitted as one or more instructions or codes on a computer readable medium. The computer readable medium includes computer storage medium and communication medium, wherein the communication medium includes any medium facilitating the transmission of computer programs from one place to another. The storage medium can be any available medium accessible by a general or special purpose computer.

[0307] The above only describes exemplary embodiments of the present application, and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A method for determining access to resources, characterized by, The method is performed by a first communication device, and the method comprises: determining resources corresponding to a first access mechanism and / or a second access mechanism according to first signaling sent by a second communication device, wherein the first access mechanism and the second access mechanism are two different access mechanisms.

2. The method of claim 1, wherein, The first signaling is used to indicate resources corresponding to the first access mechanism and / or resources corresponding to the second access mechanism.

3. The method according to claim 1 or 2, characterized in that, The first signaling comprises at least one of the following: a first time domain indication field, used to indicate time domain resources corresponding to the first access mechanism; a first frequency domain indication field, used to indicate frequency domain resources corresponding to the first access mechanism; a second time domain indication field, used to indicate time domain resources corresponding to the second access mechanism; a second frequency domain indication field, used to indicate frequency domain resources corresponding to the second access mechanism.

4. The method according to claim 1 or 2, characterized in that, The first signaling comprises a first time domain offset, which is used to determine resources corresponding to the first access mechanism and / or resources corresponding to the second access mechanism.

5. The method of claim 4, wherein: resources before a first time domain position are resources corresponding to the first access mechanism, and resources after the first time domain position are resources corresponding to the second access mechanism; or resources before the first time domain position are resources corresponding to the second access mechanism, and resources after the first time domain position are resources corresponding to the first access mechanism; wherein the first time domain position is determined according to a time domain position corresponding to the first signaling and the first time domain offset.

6. The method of claim 1 or 2, wherein, The first signaling comprises a first frequency domain offset, which is used to determine resources corresponding to the first access mechanism and / or resources corresponding to the second access mechanism.

7. The method of claim 6, wherein: resources below a first frequency domain position are resources corresponding to the first access mechanism, and resources above the first frequency domain position are resources corresponding to the second access mechanism; or resources below the first frequency domain position are resources corresponding to the second access mechanism, and resources above the first frequency domain position are resources corresponding to the first access mechanism; wherein the first frequency domain position is determined according to the first frequency domain offset and one of the following: a frequency domain position corresponding to the first signaling, a frequency domain position of a carrier, a frequency domain position of a bandwidth part (BWP).

8. The method according to any one of claims 1 to 7, characterized in that, The resources corresponding to the first access mechanism are orthogonal to the resources corresponding to the second access mechanism.

9. The method of any of claims 1-8, wherein: the resources corresponding to the first access mechanism comprise resources on which the first communication device reports a device identifier, and resources on which the second communication device feeds back based on the device identifier; or the resources corresponding to the first access mechanism comprise resources on which the first communication device reports a random identifier and a device identifier, and resources on which the second communication device feeds back based on the random identifier and the device identifier; and / or The resource corresponding to the second access mechanism comprises: a resource on which the first communication device reports a random identifier, a resource on which the second communication device feeds back based on the random identifier, a resource on which the first communication device reports a device identifier, and a resource on which the second communication device feeds back based on the device identifier; or the resource corresponding to the second access mechanism comprises: the resource on which the first communication device reports the random identifier, the resource on which the second communication device feeds back based on the random identifier, and the resource on which the first communication device reports the device identifier.

10. The method of any of claims 1-8, wherein, The resource corresponding to the first access mechanism comprises: a resource on which the first communication device reports a random identifier; and / or, The resource corresponding to the second access mechanism comprises: a resource on which the first communication device reports a random identifier.

11. The method of claim 10, wherein, The resource on which the first communication device reports a random identifier in the first access mechanism and the resource on which the first communication device reports a device identifier in the first access mechanism have a corresponding relationship.

12. The method according to claim 10 or 11, characterized in that, The method further comprises: receiving second signaling sent by the second communication device, the second signaling being used to indicate a resource on which a device identifier is reported in the second access mechanism; wherein the resource on which the device identifier is reported in the second access mechanism is orthogonal to the resource on which the device identifier is reported in the first access mechanism, or the resource on which the device identifier is reported in the second access mechanism comprises the resource on which the device identifier is reported in the first access mechanism.

13. The method of any of claims 1-8, wherein, The resource corresponding to the first access mechanism comprises: a resource on which the first communication device reports a device identifier, or a resource on which the first communication device reports a random identifier and a device identifier; and / or, The resource corresponding to the second access mechanism comprises: a resource on which the first communication device reports a random identifier.

14. The method of claim 13, wherein, The method further comprises: receiving second signaling sent by the second communication device, the second signaling being used to indicate a resource on which a device identifier is reported in the second access mechanism; wherein the resource on which the device identifier is reported in the second access mechanism is orthogonal to the resource on which the device identifier is reported in the first access mechanism, or the resource on which the device identifier is reported in the second access mechanism is orthogonal to the resource on which the random identifier and the device identifier are reported in the first access mechanism.

15. The method according to any one of claims 1 to 14, characterized in that, The method further comprises: randomly determining a first resource, the first resource being a resource used by the first communication device for access; if the first resource belongs to the resource corresponding to the first access mechanism, using the first access mechanism for access; if the first resource belongs to the resource corresponding to the second access mechanism, using the second access mechanism for access.

16. The method according to any one of claims 1 to 14, characterized in that, The method further comprises: if the first communication device uses the first access mechanism, accessing in the resource corresponding to the first access mechanism; if the first communication device uses the second access mechanism, accessing in the resource corresponding to the second access mechanism.

17. The method according to any one of claims 1 to 16, characterized in that, The first access mechanism is a two-step access mechanism, and the second access mechanism is a four-step access mechanism or a three-step access mechanism.

18. The method according to any one of claims 1 to 17, characterized in that, The first communication device is an environmental Internet of Things (A-IOT) device, and the second communication device is a network device or an intermediate node.

19. An indication method of access resources, characterized in that, The method is performed by the second communication device, and the method comprises: sending first signaling to the first communication device, the first signaling being used to indicate resources corresponding to a first access mechanism and / or resources corresponding to a second access mechanism, wherein the first access mechanism and the second access mechanism are two different access mechanisms.

20. The method of claim 19, wherein, The first signaling comprises at least one of the following: a first time domain indication field, used to indicate time domain resources corresponding to the first access mechanism; a first frequency domain indication field, used to indicate frequency domain resources corresponding to the first access mechanism; a second time domain indication field, used to indicate time domain resources corresponding to the second access mechanism; a second frequency domain indication field, used to indicate frequency domain resources corresponding to the second access mechanism.

21. The method of claim 19, wherein, The first signaling comprises a first time domain offset, which is used to determine the resources corresponding to the first access mechanism and / or the resources corresponding to the second access mechanism.

22. The method of claim 21, wherein: resources before a first time domain position are the resources corresponding to the first access mechanism, and resources after the first time domain position are the resources corresponding to the second access mechanism; or resources before the first time domain position are the resources corresponding to the second access mechanism, and resources after the first time domain position are the resources corresponding to the first access mechanism; wherein the first time domain position is determined according to a time domain position corresponding to the first signaling and the first time domain offset.

23. The method of claim 19, wherein, The first signaling comprises a first frequency domain offset, which is used to determine the resources corresponding to the first access mechanism and / or the resources corresponding to the second access mechanism.

24. The method of claim 23, wherein: resources below a first frequency domain position are the resources corresponding to the first access mechanism, and resources above the first frequency domain position are the resources corresponding to the second access mechanism; or resources below the first frequency domain position are the resources corresponding to the second access mechanism, and resources above the first frequency domain position are the resources corresponding to the first access mechanism; wherein the first frequency domain position is determined according to the first frequency domain offset and one of the following: a frequency domain position corresponding to the first signaling, a frequency domain position of a carrier, and a frequency domain position of a bandwidth part (BWP).

25. The method according to any one of claims 19 to 24, characterized in that, The resources corresponding to the first access mechanism are orthogonal to the resources corresponding to the second access mechanism.

26. The method of any one of claims 19 to 25, wherein: the resources corresponding to the first access mechanism comprise resources on which the first communication device reports a device identifier, and resources on which the second communication device feeds back based on the device identifier; or the resources corresponding to the first access mechanism comprise resources on which the first communication device reports a random identifier and a device identifier, and resources on which the second communication device feeds back based on the random identifier and the device identifier; and / or The resource corresponding to the second access mechanism comprises: a resource on which the first communication device reports a random identifier, a resource on which the second communication device feeds back based on the random identifier, a resource on which the first communication device reports a device identifier, and a resource on which the second communication device feeds back based on the device identifier; or the resource corresponding to the second access mechanism comprises: the resource on which the first communication device reports the random identifier, the resource on which the second communication device feeds back based on the random identifier, and the resource on which the first communication device reports the device identifier.

27. The method of any of claims 19-25, wherein The resource corresponding to the first access mechanism comprises: a resource on which the first communication device reports a random identifier; and / or The resource corresponding to the second access mechanism comprises: a resource on which the first communication device reports a random identifier.

28. The method of claim 27, wherein, The resource on which the first communication device reports a random identifier in the first access mechanism and the resource on which the first communication device reports a device identifier in the first access mechanism have a corresponding relationship.

29. The method of claim 27 or 28, wherein, The method further comprises: sending second signaling to the first communication device, the second signaling being used to indicate a resource on which a device identifier is reported in the second access mechanism; wherein the resource on which the device identifier is reported in the second access mechanism is orthogonal to the resource on which the device identifier is reported in the first access mechanism, or the resource on which the device identifier is reported in the second access mechanism comprises the resource on which the device identifier is reported in the first access mechanism.

30. The method of any of claims 19-25, wherein The resource corresponding to the first access mechanism comprises: a resource on which the first communication device reports a device identifier, or a resource on which the first communication device reports a random identifier and a device identifier; and / or The resource corresponding to the second access mechanism comprises: a resource on which the first communication device reports a random identifier.

31. The method of claim 30, wherein, The method further comprises: sending second signaling to the first communication device, the second signaling being used to indicate a resource on which a device identifier is reported in the second access mechanism; wherein the resource on which the device identifier is reported in the second access mechanism is orthogonal to the resource on which the device identifier is reported in the first access mechanism, or the resource on which the device identifier is reported in the second access mechanism is orthogonal to the resource on which the random identifier and the device identifier are reported in the first access mechanism.

32. The method of any of claims 19-31, wherein If the first resource randomly determined by the first communication device belongs to the resource corresponding to the first access mechanism, the first communication device accesses using the first access mechanism; If the first resource randomly determined by the first communication device belongs to the resource corresponding to the second access mechanism, the first communication device accesses using the second access mechanism; The first resource is a resource used by the first communication device to access.

33. The method of any of claims 19-31, wherein If the first communication device uses the first access mechanism, the first communication device accesses in the resource corresponding to the first access mechanism; If the first communication device uses the second access mechanism, the first communication device accesses in the resource corresponding to the second access mechanism.

34. The method of any one of claims 19 to 33, wherein, The first access mechanism is a two-step access mechanism, and the second access mechanism is a four-step access mechanism or a three-step access mechanism.

35. The method of any one of claims 19 to 34, wherein, The first communication device is an ambient Internet of Things (A-IOT) device, and the second communication device is a network device or an intermediate node.

36. An apparatus for determining access to resources, the apparatus comprising: The apparatus comprises: The processing module is configured to determine the resource corresponding to the first access mechanism and / or the resource corresponding to the second access mechanism according to the first signaling sent by the second communication device, wherein the first access mechanism and the second access mechanism are two different access mechanisms.

37. An indicator device for accessing resources, characterized in that, The apparatus comprises: The sending module is configured to send first signaling to the first communication device, the first signaling being used to indicate the resource corresponding to the first access mechanism and / or the resource corresponding to the second access mechanism, wherein the first access mechanism and the second access mechanism are two different access mechanisms.

38. A communications device, characterized by The communication device comprises a processor and a memory, and the memory stores a computer program, and the processor executes the computer program to implement the method in any one of claims 1 to 18 or the method in any one of claims 19 to 35.

39. A computer-readable storage medium, characterized in that, The storage medium stores a computer program, and the computer program is used to be executed by a processor to implement the method in any one of claims 1 to 18 or the method in any one of claims 19 to 35.

40. A chip, comprising: The chip comprises a programmable logic circuit and / or program instructions, and when the chip is running, the programmable logic circuit and / or program instructions are used to implement the method in any one of claims 1 to 18 or the method in any one of claims 19 to 35.

41. A computer program product, characterised in that, The computer program product comprises computer instructions stored in a computer readable storage medium, and a processor reads and executes the computer instructions from the computer readable storage medium to implement the method in any one of claims 1 to 18 or the method in any one of claims 19 to 35.

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