Device access method, first device, second device and communication system

Abstract

The present disclosure relates to the technical field of communications, and provides a device access method, a first device, a second device, a communication system and a computer program product. The method comprises: receiving physical reader-to-device channel (PRDCH) information, the PRDCH information carrying indication information, and the indication information being used for indicating an access mode of a first device. In the present disclosure, the first device can obtain, from the PRDCH information, an access mode indication provided by a second device, such that the first device can access a network by means of different access modes, thereby improving the utilization rate of network resources and the network capacity.

Description

Device access method, first device, second device and communication system

[0001] Cross-references to related applications

[0002] This application claims priority to Chinese Patent Application No. 202510387572.8, filed on March 28, 2025, entitled "Device Access Method, First Device, Second Device and Communication System", the entire contents of which are incorporated herein by reference. Technical Field

[0003] This disclosure relates to the field of communication technology, and more specifically, to a device access method, a first device, a second device, a communication system, and a computer program product. Background Technology

[0004] Passive Internet of Things (A-IoT) technology harnesses energy from the environment or radio frequency signals for waveform modulation and transmission without relying on batteries. Currently, because devices cannot enter a timed sleep state, the network cannot know their actual energy storage status, requiring continuous transmission of Physical R2D (Device to Reader) channel (PRDCH) information. Furthermore, the large number of devices, all accessing the network through some method, places a burden on the network, thus affecting network resource utilization and network capacity. Summary of the Invention

[0005] According to one aspect of this disclosure, a device access method is provided, comprising: receiving physical reader-to-device channel (PRDCH) information, wherein the PRDCH information carries indication information for indicating the access method of a first device.

[0006] According to one aspect of this disclosure, a device access method is provided, comprising: sending physical reader to device channel (PRDCH) information to a first device, wherein the PRDCH information carries indication information for indicating the access method of the first device.

[0007] According to one aspect of this disclosure, a first device is provided, comprising: a first transceiver module configured to receive physical reader-to-device channel (PRDCH) information, wherein the PRDCH information carries indication information for indicating the access method of the first device.

[0008] According to one aspect of this disclosure, a second device is provided, comprising: an access control module configured to send Physical Reader to Device Channel (PRDCH) information to a first device, the PRDCH information carrying indication information for indicating the access method of the first device.

[0009] According to one aspect of this disclosure, a communication system is provided, including the first device and the second device described above.

[0010] According to one aspect of this disclosure, a computer program product is provided, comprising a computer program that, when executed by a processor, implements any of the above methods.

[0011] According to one aspect of this disclosure, yet another first device is provided, comprising: a processor; and a memory for storing executable instructions of the processor; wherein the processor is configured to perform any of the exemplary methods described above applied to the first device by executing the executable instructions.

[0012] According to one aspect of this disclosure, a second device is provided, comprising: a processor; and a memory for storing executable instructions of the processor; wherein the processor is configured to perform any of the exemplary methods described above applied to the second device by executing the executable instructions. Attached Figure Description

[0013] Figure 1 shows an architecture diagram of a communication system according to an exemplary embodiment of the present disclosure.

[0014] Figure 2 shows a flowchart of a device access method according to an exemplary embodiment of the present disclosure.

[0015] Figure 3 shows a flowchart of yet another device access method according to an exemplary embodiment of the present disclosure.

[0016] Figure 4 shows a schematic diagram of the structure of a first device according to an exemplary embodiment of the present disclosure.

[0017] Figure 5 shows a schematic diagram of the structure of a second device according to an exemplary embodiment of the present disclosure.

[0018] Figure 6 shows a schematic diagram of the composition of a communication system according to an exemplary embodiment of the present disclosure.

[0019] Figure 7 shows a block diagram of a first device according to an exemplary embodiment of the present disclosure. Detailed Implementation

[0020] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, exemplary embodiments can be implemented in many forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be more comprehensive and complete, and will fully convey the concept of exemplary embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and therefore their detailed description will be omitted.

[0021] Furthermore, the described features, structures, or characteristics can be combined in any suitable manner in one or more embodiments. Numerous specific details are provided in the following description to give a thorough understanding of embodiments of this disclosure. However, those skilled in the art will recognize that the technical solutions of this disclosure can be practiced without one or more of the specific details described, or other methods, components, apparatuses, steps, etc., can be employed. In other instances, well-known structures, methods, apparatuses, implementations, or operations are not shown or described in detail to avoid obscuring various aspects of this disclosure.

[0022] The block diagrams shown in the accompanying drawings are merely functional entities and do not necessarily correspond to physically independent entities. That is, these functional entities can be implemented in software, or in one or more software-hardened modules, or in different network and / or processor devices and / or microcontroller devices.

[0023] First, the concepts or terms involved in the exemplary embodiments of this disclosure will be explained.

[0024] Passive Internet of Things (A-IoT), also known as environmental IoT, is an IoT technology that can operate without an external power source or battery. Its core lies in utilizing energy from the environment (such as light, heat, and radio frequency signals) to power devices, and using this energy for waveform modulation and data transmission.

[0025] The device, also known as an Internet of Things (IoT) device, passive IoT device, RFID tag, LoRa device, A-IoT device, user equipment (UE), relay device, auxiliary node device, or other device, receives PRDCH information, including receiving PRDCH information sent by network devices, base stations, relay nodes, relay terminals (UEs), terminals (UEs), readers, customer premises equipment (CPEs), or other devices with transmission capabilities. It should be noted that the exemplary embodiments of this disclosure use the first device as an example to illustrate the device.

[0026] The second device, also known as a network-side device, network, network node, network function, network configuration, or other network-side device capable of sending PRDCH information to the first device, is described using the second device as an example to illustrate the network-side device sending PRDCH information to the first device. R2D, Reader to Device link, represents the downlink transmission from the base station (network-side device) to the device.

[0027] D2R, Device to Reader link, represents the uplink from device to base station (network-side equipment).

[0028] PRDCH, Physical R2D Channel, Physical reader-to-device channel, Physical reader to device channel, is a transmission channel on an R2D link used to transmit downlink information. It is also known as the physical reader-to-device channel, physical R2D channel, etc.

[0029] The initialization PRDCH refers to the first downlink command that triggers the access process. It can be multiple PRDCH messages, such as those sent via repetition. It primarily carries resource information and other triggering or initialization information. The initialization PRDCH is also known as the initialization PRDCH message, initial PRDCH, MSG0, MSG0 PRDCH, MSG0 PRDCH message, message 0 PRDCH message, and the PRDCH that triggers access. The initialization PRDCH can also include PRDCH information for re-access.

[0030] PDRCH, Physical D2R Channel, is a transmission channel on a D2R link used to transmit uplink information; it is also known as a physical D2R channel.

[0031] Message 1, also known as MSG1, is a PDRCH message. After receiving the initial PDRCH, the device sends information to the network side, such as feeding back the device's random ID information to the network side.

[0032] Message 3, also known as MSG3, is a PDRCH message. After the Device receives the ACK from the second device and confirms its identity as the receiver, it sends information to the second device, such as its real ID information (e.g., EPC (Electronic Product Code) or other transaction codes, and other necessary information). The real ID can be a paging ID, transaction ID, device ID, or AS ID. The paging ID is the identification code of the second device for the first device during access or paging. When the first device recognizes that this identification code matches its own, that first device is selected. The AS ID is the access layer ID, used to select a specific first device for R2D transmission or D2R reception. The AS ID can be a simplified version of the device ID, and the AS ID can be equal to the random ID value.

[0033] Because the desired devices are low-cost, low-power, and low-complexity, cost constraints prevent them from being in a timed sleep state. They can only be in a state of being powered or de-powered. Furthermore, the network side cannot know when the devices will be fully charged, as this is a random state. Therefore, the network side needs to continuously send multiple PRDCH messages. Otherwise, if too few PRDCH messages are sent or the duration is too short, some devices will not be able to receive the PRDCH and thus cannot execute the corresponding network side commands or inventory operations, affecting the expected results of the corresponding operations on the network side. At the same time, due to the large number of connected devices, if each device connects to the network based on a certain access method (such as contention-based access or three-step access), it will place a significant burden on the network, thereby affecting the utilization rate of network resources and network capacity.

[0034] Based on this, the device access method provided by the exemplary embodiments of this disclosure enables the first device to obtain the second device's indication of the access method from the PRDCH information, thereby allowing the first device to know which access method it uses to access the network, and thus enabling the first device to access the network through different access methods.

[0035] Figure 1 shows an architecture diagram of a communication system according to an exemplary embodiment of the present disclosure. As shown in Figure 1, the architecture includes a terminal device 101, a network 102, and a network device 103; wherein, the terminal device 101 interacts with the network device 103 through the network 102.

[0036] In some alternative embodiments, the aforementioned wireless or wired networks use standard communication technologies and / or protocols. The network is typically the Internet, but can also be any network, including but not limited to Local Area Networks (LANs), Metropolitan Area Networks (MANs), Wide Area Networks (WANs), mobile, wired or wireless networks, private networks, or any combination of virtual private networks. In some embodiments, technologies and / or formats including Hyper Text Markup Language (HTML), Extensible Markup Language (XML), etc., are used to represent data exchanged over the network. Furthermore, conventional encryption technologies such as Secure Socket Layer (SSL), Transport Layer Security (TLS), Virtual Private Networks (VPNs), and Internet Protocol Security (IPSec) can be used to encrypt all or some links. In other embodiments, custom and / or dedicated data communication technologies can be used to replace or supplement the aforementioned data communication technologies.

[0037] In some alternative embodiments, terminal device 101 can be a device that provides voice / data to a user, such as a handheld device or in-vehicle device with wireless connectivity. For example, terminal device 101 can be a mobile phone, tablet computer, laptop computer, PDA, mobile internet device, virtual reality device, augmented reality device, wireless terminal in industrial control, wireless terminal in autonomous driving, wireless terminal in remote surgery, wireless terminal in smart grid, wireless terminal in transportation safety, wireless terminal in smart city, wireless terminal in smart home, cellular phone, etc., without specific limitation.

[0038] In the exemplary embodiments of this disclosure, the terminal device 101 can also be a device terminal in an Internet of Things (IoT) system. IoT can connect to a network through communication technology, thereby realizing a smart network that enables human-computer interaction and the interconnection of everything. For example, the terminal device 101 can be understood as a first device, or an IoT device terminal. Specifically, it can be understood as a passive IoT terminal, or a passive IoT (Passive IoT) device terminal. The terminal device 101 can also be called UE (User Equipment) or Device.

[0039] In some alternative embodiments, network device 103 may be a base station, user equipment (UE), repeater, network controlled repeater (NCR), customer premises equipment (CPE), radio frequency signal transmitter, reader, or access point, etc. The base station may be, but is not limited to, a 5G or later version base station (e.g., a gNB base station), or a base station in other communication systems (e.g., an eNB base station). The base station is responsible for signal transmission and reception, supporting large-area user communication. The UE is a device directly used by the user to send and receive data. An NCR is an active repeater based on the amplification and forwarding concept, with beamforming and time-division duplex operation capabilities. It is a network controlled repeater used to enhance signal coverage and link quality in wireless communication systems. A repeater is a network device used to enhance signal strength, ensuring that the signal can travel over greater distances. A CPE may include network devices in a home or enterprise, such as routers and switches, used to connect multiple devices to the network. The radio frequency signal transmitter is used for wireless signal transmission, ensuring that the signal can cover a wider area. The reader may be a device for reading radio frequency identification tags for data collection and identification. In the exemplary embodiments of this disclosure, no specific type of network device 103 is specifically limited.

[0040] It should be noted that the number of terminal devices, networks, and network devices in Figure 1 is merely illustrative. Any number of terminal devices, networks, and network devices can be included depending on actual needs. The exemplary embodiments of this disclosure are not limited in this respect.

[0041] The device access method of the exemplary embodiments of this disclosure will be described in detail below with reference to specific embodiments and accompanying drawings.

[0042] Figure 2 shows a flowchart of a device access method according to an exemplary embodiment of this disclosure. The device access method is applied to a first device, and the specific steps include:

[0043] In step S210, the physical reader to device channel PRDCH information is received. The PRDCH information carries indication information, which is used to indicate the access method of the first device.

[0044] In an exemplary embodiment of this disclosure, the PRDCH information is downlink control information sent by the second device, and the first device obtains indication information from the PRDCH information.

[0045] The access method, also known as random access, random access procedure, or random access method, refers to the specific process and mechanism by which the first device and the second device establish a connection. Different access methods define how the first device initiates an access request, how it synchronizes with the second device, how it allocates resources, and how it resolves conflicts. Different access methods are suitable for different scenarios and needs.

[0046] In one exemplary embodiment, message one is sent according to instruction information. Specifically, message one (MSG1) is sent according to the instruction information.

[0047] In an exemplary embodiment, the access method includes at least one of two-step access, three-step access, contention-based access, and non-contention-based access.

[0048] Two-step access is a simplified access process that combines the traditional four-step access process into two steps. Three-step access is an access method introduced in 5G NR (5th Generation New Radio), falling between the traditional four-step and two-step access methods. Contention-based access involves the first device randomly selecting a preamble and resources from shared resources for access. Non-contention-based access involves the second device allocating a dedicated preamble and resources to the first device, avoiding conflicts.

[0049] In an exemplary embodiment of this disclosure, after receiving PRDCH information, the first device determines its access method through the obtained indication information, that is, accesses the network through at least one of two-step access, three-step access, contention-based access, and non-contention-based access.

[0050] Since the indication information carried in the PRDCH information sent by the second device to different first devices can be used to indicate different access methods, each first device can access the network through different access methods, thereby improving the utilization rate of network resources and network capacity.

[0051] In an exemplary embodiment, the indication information is any one of PRDCH information, PRDCH control information domain information, resource information, reference signal, and power information.

[0052] Among them, resource information, configuration can also be an indication, and configuration resource information can also be called indication resource information.

[0053] The indication information is PRDCH information, which means that the indication information is carried in the PRDCH information sent by the second device and is contained in the data structure of the PRDCH information sent by the second device. For example, the indication information is a specific field in the PRDCH information.

[0054] In some optional embodiments, if the indication information is PRDCH information, then the PRDCH information includes any of the following:

[0055] 1) First indication information indicating the access method, wherein the first indication information is used to indicate that the first device accesses the network through at least one of two-step access, three-step access, contention-based access, and non-contention-based access. The first indication information directly indicates at least one of two-step access, three-step access, contention-based access, and non-contention-based access.

[0056] 2) Second indication information indicating the content of message one, the second indication information being used to indicate whether message one contains the ID of the first device or the ID of the first device group.

[0057] Optionally, the second indication information includes at least one bit, and a first number of bits from the at least one bit indicates whether the first device or the first device group contains a real ID, for indicating whether the first device accesses the network via a two-step or three-step access method.

[0058] For example, if a first number of bits from at least one bit indicates that message one contains the real ID of the first device or the real ID of the first device group, then the first device is instructed to access the network through three steps; if it does not contain the real ID, then the first device is instructed to access the network through two steps.

[0059] Alternatively, if a first number of bits from at least one bit indicates that message one contains the real ID of the first device or the real ID of the first device group, then the first device is instructed to access the network via two steps; if not, then the first device is instructed to access the network via three steps.

[0060] Optionally, the second indication information includes at least one bit, and a second number of bits from the at least one bit indicates whether the first device or the first device group contains a random ID, for indicating whether the first device accesses the network through contention-based access or through non-contention-based access.

[0061] For example, a second number of bits from at least one bit indicates that message one contains a random ID of the first device or a random ID of the first device group, indicating that the first device accesses the network via contention-based access; if not, it indicates that the first device accesses via non-contention-based access.

[0062] Alternatively, a second number of bits from at least one bit indicates that message one contains a random ID of the first device or a random ID of the first device group, indicating that the first device accesses the network via a non-contention-based access method; if not, it indicates that the first device accesses via a contention-based access method.

[0063] 3) The third indication information indicates whether the received PRDCH information contains message three.

[0064] The third indication information includes at least one bit, and a third number of bits from the at least one bit indicate whether the PRDCH information includes message three or not, used to indicate whether the first device accesses the network via a three-step access or two-step access method.

[0065] For example, if a third number of bits from at least one bit indicates that the PRDCH information includes message three, it indicates that the first device accesses the network via a three-step access method; if it does not include this message, it indicates that the first device accesses the network via a two-step access method. Alternatively, if a third number of bits from at least one bit indicates that the PRDCH information includes message three, it indicates that the first device accesses the network via a two-step access method; if it does not include this message, it indicates that the first device accesses the network via a three-step access method.

[0066] In some optional embodiments, if the indication information is PRDCH control information field information, then the PRDCH control information field information is in any of the following forms:

[0067] The first field indicating the access method;

[0068] The second field indicates the information content of message one;

[0069] The third field of the information content of message three.

[0070] In the above form, "domain" refers to a specific part of a data frame or message used to carry certain specific information. In an exemplary embodiment of this disclosure, the PRDCH control information domain information is a domain that indicates the access method.

[0071] Optionally, if the PRDCH control information field is a first field indicating the access method, the first field can be any of the following forms:

[0072] 1) The first domain includes a first subdomain and a second subdomain. The first subdomain indicates whether the first device accesses the network via a two-step or three-step access method, and the second subdomain indicates whether the first device accesses the network via a contention-based or non-contention-based access method. In other words, the access method is indicated by two domains.

[0073] Specifically, the first subfield includes M bits, and the second subfield includes N bits, where M and N are both positive integers. At least one of the M bits is used to indicate whether the first device accesses the network via a two-step or three-step access method, and at least one of the N bits is used to indicate whether the first device accesses the network via a contention-based or non-contention-based access method.

[0074] Optionally, the first subfield and the second subfield may contain the same number of bits.

[0075] Optionally, 1 bit from the M bits is used to indicate whether the first device accesses the network via a two-step or three-step access method, and 1 bit from the N bits is used to indicate whether the first device accesses the network via a contention-based or non-contention-based access method. Of course, the number of bits from M and N used to indicate the access method can be determined according to actual needs and scenarios, and there is no limitation on this.

[0076] 2) The first field includes bits for indicating two-step or three-step access and bits for indicating contention-based or non-contention-based access. This can be understood as using one field to indicate the access method, with different bit portions within that field used to indicate two-step (or three-step) access and contention-based (or non-contention-based) access, respectively.

[0077] Specifically, the first field includes X bits, at least one of which is used to indicate that the first device accesses the network via a two-step or three-step access method, and at least one of which is used to indicate that the first device accesses the network via a contention-based or non-contention-based access method, where X is a positive integer.

[0078] Optionally, one bit of the X bits is used to indicate whether the first device accesses the network via a two-step or three-step access method, and the other bit of the X bits is used to indicate whether the first device accesses the network via a contention-based or non-contention-based access method. Of course, the number of bits in X used to indicate two-step or three-step access can be the same as or different from the number of bits used to indicate contention-based or non-contention-based access. The specific number of bits can be determined according to actual needs and scenarios, and there are no restrictions on this.

[0079] 3) The first field includes bits for indicating two-step or three-step access and bits for indicating contention-based or non-contention-based access. This can be understood as indicating the access method through one field, and using the same bit portion within that field to simultaneously indicate two-step (or three-step) access and contention-based (or non-contention-based) access.

[0080] Specifically, the first field includes Y bits, at least one of which is used to indicate whether the first device accesses the network via a two-step or three-step access method, and to indicate whether the first device accesses the network via a contention-based or non-contention-based access method, where Y is a positive integer.

[0081] Optionally, the first field includes Y bits, where 1 bit in the Y bits is used to indicate whether the first device accesses the network via a two-step or three-step access method, and the 1 bit is used to indicate whether the first device accesses the network via a contention-based or non-contention-based access method. The specific number of bits can be determined according to actual needs and scenarios, and there is no limitation thereto.

[0082] 4) The first field includes bits used to indicate any one of the following access methods: two-step access, three-step access, contention-based access, and non-contention-based access. This can be understood as using one bit to indicate the access method, and using the same bit portion within this field to indicate any one of the following access methods: two-step access, three-step access, contention-based access, and non-contention-based access.

[0083] Specifically, the first field includes Z bits, at least one of which is used to indicate that the first device accesses the network through any one of two-step access, three-step access, contention-based access, and non-contention-based access, where Z is a positive integer.

[0084] Optionally, the first field includes Z bits, where 1 bit in the Z bits is used to indicate that the first device accesses the network through any one of the following access methods: two-step access, three-step access, contention-based access, and non-contention-based access. The specific number of bits can be determined according to actual needs and scenarios, and there is no limitation thereto.

[0085] It should be noted that the specific values ​​of the number of bits M, N, X, Y, and Z mentioned above can be determined according to actual needs and scenarios. The exemplary embodiments of this disclosure do not impose specific restrictions on the specific numerical values ​​(or quantities) involved, and will not be repeated hereafter.

[0086] Optionally, if the PRDCH control information field is a second field indicating the information content of message one, wherein the second field includes any of the following forms:

[0087] 1) The bit indication message in the second field contains the real ID of the first device or the real ID of the first device group, indicating whether the first device accesses the network through a two-step access or three-step access method.

[0088] This can be understood as using a single field to indicate the access method, where the bits in that field indicate whether message one contains the real ID of the first device or the real ID of the first device group.

[0089] Specifically, the second field includes at least one bit, and a fourth number of bits from the at least one bit indicate whether message one contains the real ID of the first device or the real ID of the first device group, for indicating whether the first device accesses the network via a two-step or three-step access method.

[0090] Optionally, the second field includes at least one bit, and one bit from the at least one bit indicates whether message one contains the real ID of the first device or the real ID of the first device group, for indicating whether the first device accesses the network via a two-step access or three-step access method.

[0091] For example, if the 1-bit indication message contains the real ID of the first device or the real ID of the first device group, it indicates that the first device accesses the network via a three-step access method; if it does not contain the real ID, it indicates that the first device accesses the network via a two-step access method. Alternatively, if the 1-bit indication message contains the real ID of the first device or the real ID of the first device group, it indicates that the first device accesses the network via a two-step access method; if it does not contain the real ID, it indicates that the first device accesses the network via a three-step access method.

[0092] 2) Whether the bit indication message one of the second field contains the random ID of the first device or the random ID of the first device group, it indicates whether the first device accesses the network through a contention-based access method or a non-contention-based access method.

[0093] Specifically, a fifth number of bits from at least one bit indicates whether message one contains a random ID of the first device or a random ID of the first device group, for indicating whether the first device accesses the network via contention-based access or via non-contention-based access.

[0094] Optionally, the second field includes at least one bit, and one bit from the at least one bit indicates whether message one contains a random ID of the first device or a random ID of the first device group, for indicating whether the first device accesses the network through a contention-based access method or a non-contention-based access method.

[0095] For example, if the 1-bit indication message contains the random ID of the first device or the random ID of the first device group, it indicates that the first device accesses the network via a contention-based access method; if it does not contain the random ID, it indicates that the first device accesses the network via a contention-free access method. Alternatively, if the 1-bit indication message contains the random ID of the first device or the random ID of the first device group, it indicates that the first device accesses the network via a contention-free access method; if it does not contain the random ID, it indicates that the first device accesses the network via a contention-based access method.

[0096] Optionally, the PRDCH control information field is a third field indicating the content of message three. The bits in the third field indicate whether the first device transmits message three, and indicate whether the first device accesses the network via a three-step or two-step access method.

[0097] Specifically, the third field includes at least one bit, and a sixth number of bits from the at least one bit indicate whether the first device transmits message three, for indicating whether the first device accesses the network via a three-step access or two-step access method.

[0098] Optionally, the third field includes at least one bit, and one bit from the at least one bit indicates whether the first device transmits message three, for indicating whether the first device accesses the network via a three-step access or two-step access method.

[0099] For example, the third field includes at least one bit, where one bit from at least one bit indicates that the first device transmits message three, which is used to indicate that the first device accesses the network via a three-step access method, and if one bit from at least one bit indicates that the first device does not transmit message three, it is used to indicate that the first device accesses the network via a two-step access method.

[0100] In some optional embodiments, if the indication information is resource information, the resource information is configured with multiple access resources, and different access resources have their own corresponding access methods.

[0101] The resource information includes time-domain resource information and / or frequency-domain resource information. The first device is configured with certain access resources, and then accesses the network through the access methods corresponding to those resources. This can be understood as indirectly instructing the first device to access the network using the access methods corresponding to those access resources, rather than directly indicating the access method.

[0102] This method includes any of the following instruction methods:

[0103] 1) Among the multiple access resources, y1 access resource is used for the first device to access the network through a two-step access method, y2 access resource is used for the first device to access the network through a three-step access method, and y3 access resource is a multi-functional resource used for the first device to access the network through a two-step or three-step access method, where y1, y2 and y3 ≥ 0.

[0104] The second device configures different access resource portions (y1, y2, and y3) from multiple access resources for the first device to access the network in different ways (two-step access or three-step access), and indirectly indicates the access method of the first device by indicating the access resources through indication information.

[0105] Based on this, the instruction information also includes any of the following instruction methods:

[0106] a. The indication information is used to indicate y1 access resources and / or y3 access resources to the first device or group of first devices in two-step access, and to indicate y2 access resources and / or y3 access resources to the first device or group of first devices in three-step access.

[0107] It is worth noting that when the indication information for the first device is 0 for y1, y2, or y3, it indicates that the access resource used to indicate the access method among the multiple access resources has not been indicated to the first device. For example, in this method a, if y2 and y3 are both 0, it means that the indication information is used to indicate y1 access resources to the first device or the group of first devices in the two-step access process.

[0108] b. The indication information is used to indicate multiple access resources to the first device or the first device group, and to indicate y1 access resources and / or y3 access resources as valid to the first device or the first device group with two-step access, and to indicate y2 access resources and / or y3 access resources as valid to the first device or the first device group with two-step access.

[0109] Compared to method a, in method b, multiple access resources can be indicated to the first device through indication information, but the validity of different access resources for different first devices must also be indicated. Only the access resource portion that is indicated as valid can be used to indirectly instruct the first device to access the network using the access method corresponding to that valid access resource portion.

[0110] In this method b, although the first device indicates multiple access resources, for the first device with two-step access, only y1 and / or y3 access resources are valid, and for the first device with three-step access, only y2 and / or y3 access resources are valid.

[0111] 2) Among the multiple access resources, x1 access resources are used by the first device to access the network through contention-based access, x2 access resources are used by the first device to access the network through non-contention-based access, and x3 access resources are multi-functional resources used by the first device to access the network through either contention-based or non-contention-based access, where x1, x2, and x3 ≥ 0.

[0112] For this method 2), similar to the indication method in 1) above, the second device configures different access resource portions (x1, x2 and x3) of multiple access resources for the first device to access the network in different ways (contention-based access or non-contention-based access), and indicates the access resources through indication information, thereby indirectly indicating the access method of the first device.

[0113] Based on this, the instruction information also includes any of the following instruction methods:

[0114] a. The indication information is used to indicate the x1 access resources and / or x3 access resources to the first device or the first device group with contention-based access, and to indicate x2 access resources and / or x3 access resources to the first device or the first device group with non-contention-based access.

[0115] It is also worth noting that when the indication information for the first device is 0 for x1, x2, or x3, it means that the access resource used to indicate the access method among the multiple access resources has not been indicated to the first device. For example, in this method a, if both x2 and x3 are 0, it means that the indication information is used to indicate x1 access resources to the first device or the group of first devices based on contention-based access.

[0116] b. The indication information is used to indicate multiple access resources to the first device or the first device group, and it is valid to indicate x2 and / or x3 access resources to the first device or the first device group based on contention-based access, and it is valid to indicate x2 and / or x3 access resources to the first device or the first device group based on non-contention-based access.

[0117] Similarly, in this method b, although the first device indicates multiple access resources, for the first device with contention-based access, only x1 and / or x3 access resources are valid, and for the first device with non-contention-based access, only x2 and / or x3 access resources are valid.

[0118] In one exemplary embodiment, if the indication information is a reference signal (also known as an amble), it refers to a specific signal used for functions such as synchronization, channel estimation, interference estimation, time-frequency offset estimation, and channel measurement. It is generally composed of levels, symbols, chips, or sequences, or combinations thereof. The reference signal is a synchronization signal or a pilot signal.

[0119] The indication information is configured with a variety of available preamble patterns, each with its own corresponding access method. A preamble pattern refers to a specific sequence or waveform design (such as structure and composition) of the preamble. Based on the preamble pattern, functions such as signal detection, time synchronization, frequency synchronization, and channel estimation can be achieved during communication.

[0120] Optionally, the exemplary embodiments of this disclosure can be preconfigured to predefine a variety of available preamble patterns. Among these available preamble patterns, K1 preamble patterns are used for the first device to access the network via a two-step access method, K2 preamble patterns are used for the first device to access the network via a three-step access method, and K3 preamble patterns are used for the first device to access the network via either a two-step or three-step access method, where K1, K2, and K3 ≥ 0.

[0121] If at least one of K1, K2, and K3 is 0, it indicates that the indication information does not indicate the access method to the first device using a certain access method. For example, if K2 and K3 are 0, then K1 preamble patterns out of multiple preamble patterns are used by the first device to access the network via a two-step access method.

[0122] Specifically, different preamble patterns include any of the following forms:

[0123] a. Different preamble patterns have different starting position indicators, but the same clock acquisition part.

[0124] b. Different preamble patterns have the same starting position indication part, but different clock acquisition parts.

[0125] c. Different preamble patterns have different starting position indication parts and different clock acquisition parts.

[0126] d. Different preamble patterns are extended preamble patterns, which are used to indicate the access method of the first device.

[0127] e. Different preamble patterns have different types or sequences, and different types of preamble patterns or different sequences of preamble patterns have their own corresponding access methods.

[0128] The preamble pattern's start indicator section, also known as the start position indicator, is a special part of the preamble pattern used to identify the start position of a data frame or signal. It helps the receiver accurately detect the start of the signal, thus achieving time synchronization and frame synchronization. The clock acquisition section, also known as the clock acquisition section, refers to the process by which the receiver obtains the transmitter's clock information by detecting the clock acquisition section of the preamble pattern, thereby achieving time synchronization.

[0129] If it is form a, the instruction information also includes any of the following instruction methods:

[0130] A. The starting position indicator of the preamble pattern uses a different level mode to indicate whether the first device accesses the network via a two-step or three-step access method.

[0131] Optionally, if the start position indication portion of the preamble pattern uses a high + low level mode, it indicates that the first device accesses the network via a two-step access method. Optionally, if the start position indication portion of the preamble pattern uses a low + high level mode or a high + low + high + low level mode, it indicates that the first device accesses the network via a three-step access method.

[0132] Of course, other level modes can also be used to indicate two-step or three-step access. For example, if the start position indicator of the preamble pattern uses a high + low + high + low level mode, it indicates that the first device accesses the network via a two-step access method. If the start position indicator of the preamble pattern uses a low + high level mode, it indicates that the first device accesses the network via a three-step access method. Exemplary embodiments of this disclosure include, but are not limited to, the level modes described above.

[0133] B. The start position indicator of the preamble pattern uses whether the duration of the low and high levels are the same to indicate whether the first device accesses the network via a two-step or three-step access method.

[0134] The duration of using low and high levels is also called the length of using low and high levels.

[0135] Optionally, if the start position indication portion of the preamble pattern uses low and high levels for the same duration, the first device is instructed to access the network via a two-step access method; otherwise, the first device is instructed to access the network via a three-step access method. Alternatively, if the start position indication portion of the preamble pattern uses low and high levels for different durations, the first device is instructed to access the network via a two-step access method; otherwise, the first device is instructed to access the network via a three-step access method.

[0136] C. Whether the length of each level in the first high-low level group of the preamble pattern's starting position indicator is the same as the length of the adjacent high-low-high level group is used to indicate whether the first device accesses the network via a two-step or three-step access method.

[0137] Optionally, if the length of each level in the first high-low level group of the starting position indication portion of the preamble pattern is the same as the length of the level in the adjacent next high-low-high level group, then the first device is indicated to access the network in a two-step access manner; otherwise, the first device is indicated to access the network in a three-step access manner.

[0138] Optionally, if the length of each level in the first high-low level group of the starting position indication portion of the preamble pattern is the same as the length of the level in the adjacent next high-low-high level group, then the first device is indicated to access the network via a three-step access method; otherwise, the first device is indicated to access the network via a two-step access method.

[0139] Of course, besides considering whether the length of each level in the first high-low level group is the same as the length of the adjacent high-low-high level group to determine the access method, the access method can also be determined by whether the length of each level in the first high-low level group satisfies a first relationship with the length of the adjacent high-low-high level group. If so, the first device is instructed to access the network via a three-step access method; otherwise, the first device is instructed to access the network via a two-step access method. The first relationship can be a numerical relationship, a multiple relationship, or other relationships.

[0140] As an example, if the length of each level in the first high-low level group satisfies a 2x constraint relationship with the length of the adjacent high-low-high level group, then the first device is instructed to access the network via a two-step access method; otherwise, the first device is instructed to access the network via a three-step access method.

[0141] If it is form b, the starting position indication part is the same for different preamble patterns, but the clock acquisition part is different.

[0142] Optionally, if the duration of the clock acquisition section is not fixed, the first device is instructed to access the network via a two-step access method; otherwise, the first device is instructed to access the network via a three-step access method.

[0143] Optionally, if the duration of the clock acquisition section is not fixed, the first device is instructed to access the network via a three-step access method; otherwise, the first device is instructed to access the network via a two-step access method.

[0144] If it is form c, that is, different preamble patterns have different starting position indication parts and different clock acquisition parts, then it can be determined by the combination of form a and form b above.

[0145] For example, if the start position indication part of the preamble pattern uses a high + low level mode (from form a), and the duration of the clock acquisition part is not fixed, then the first device is instructed to access the network in a two-step access manner. If the start position indication part of the preamble pattern uses a low + high level mode or a high + low + high + low level mode, and the duration of the clock acquisition part is fixed (from form b), then the first device is instructed to access the network in a three-step access manner.

[0146] For example, if the start position indication part of the preamble pattern uses low and high levels for the same duration (from form a), and the duration of the clock acquisition part is not fixed, then the first device is indicated to access the network in a two-step access manner; if the start position indication part of the preamble pattern uses low and high levels for different durations (from form a), and the duration of the clock acquisition part is fixed, then the first device is indicated to access the network in a three-step access manner.

[0147] In form c, by combining the implementation methods of form a and form b, a variety of indication methods for the first device to access the network can be created, which will not be listed one by one.

[0148] If it is form d, different preamble patterns are extended preamble patterns, which are used to indicate the access method of the first device.

[0149] The extended preamble pattern includes extended indication information, which indicates whether the first device accesses the network via a two-step or three-step access method. This can be understood as adding an extra portion of extended indication information within the preamble to indicate the access method. The extended indication information can be 1 bit or other numbers of bits, determined according to actual needs or scenarios.

[0150] The expanded instruction information includes any of the following forms:

[0151] In the first form, the content of the extended instruction information differs, instructing IoT network devices to access the network via a two-step or three-step access method.

[0152] Optionally, the extended indication information is 1 bit of indication information. If the 1 bit of indication information is 0, it indicates that the first device accesses the network through a two-step access method. If the 1 bit of indication information is 1, it indicates that the first device accesses the network through a three-step access method.

[0153] Optionally, the extended indication information is 1 bit of indication information. If the 1 bit of indication information is 0, it indicates that the first device accesses the network through a three-step access method. If the 1 bit of indication information is 1, it indicates that the first device accesses the network through a two-step access method.

[0154] The second form includes extended indication information, including high and low level information. Whether or not high and low levels are added to the extended preamble pattern indicates that the IoT network device can access the network through a two-step or three-step access method.

[0155] Optionally, if the extended indication information indicates the presence of high or low levels, it indicates that the IoT network device accesses the network via a three-step access method; otherwise, it indicates that the IoT network device accesses the network via a two-step access method.

[0156] Optionally, if the extended indication information indicates the addition of high and low levels, it indicates that the IoT network device accesses the network via a two-step access method; otherwise, it indicates that the IoT network device accesses the network via a three-step access method.

[0157] This can be understood as implicitly indicating the presence of a portion of high and low levels in the extended indication information. If the extended indication information indicates the existence of this implicit indication, then one access method is indicated; otherwise, another access method is indicated.

[0158] The third form includes extended indication information, which includes high and low level information. The arrangement of the high and low levels added in the extended preamble pattern is different, indicating that the IoT network device can access the network through a two-step or three-step access method.

[0159] The arrangement of high and low voltage levels is also known as the pattern structure or diagram. Different arrangements of high and low voltage levels indicate different access methods.

[0160] For example, if the arrangement of high and low voltage levels added to the extended preamble pattern is pattern 1, it indicates that the IoT network device accesses the network via a two-step access method; if the arrangement of high and low voltage levels added to the extended preamble pattern is pattern 2, it indicates that the IoT network device accesses the network via a three-step access method. Of course, the specific arrangement of high and low voltage levels can be determined according to actual needs or scenarios, and the exemplary embodiments of this disclosure do not limit this.

[0161] If it is form e, different preamble patterns have different types or sequences, and different types of preamble patterns or different sequences of preamble patterns have their own corresponding access methods.

[0162] Among them, the type or sequence of preamble patterns is also called preamble sequence or pattern type.

[0163] Different access methods can be indicated by determining the type or sequence of different preamble patterns.

[0164] For example, if the type or sequence of the preamble pattern is sequence L1, it indicates that the IoT network device accesses the network through a two-step access method; if the type or sequence of the preamble pattern is sequence L2, it indicates that the IoT network device accesses the network through a three-step access method. Of course, the specific type or sequence of the preamble pattern can be determined according to actual needs or scenarios, and the exemplary embodiments of this disclosure do not limit this.

[0165] Optionally, exemplary embodiments of this disclosure can be preconfigured to predefine a variety of available preamble patterns. Among these available preamble patterns, Q1 preamble patterns are used for the first device to access the network via a contention-based access method, Q2 preamble patterns are used for the first device to access the network via a non-contention-based access method, and Q3 preamble patterns are used for the first device to access the network via either a contention-based or non-contention-based access method, where Q1, Q2, and Q3 ≥ 0.

[0166] If at least one of Q1, Q2, and Q3 is 0, it indicates that the indication information does not indicate the access method to the first device using a certain access method. For example, if Q2 and Q3 are 0, then Q1 preamble patterns out of multiple preamble patterns are used by the first device to access the network through a contention-based access method.

[0167] Similarly, for contention-based or non-contention-based access, the processing method is similar to that of the two-step or three-step access described above, and the parts that are repeated above will not be repeated.

[0168] Specifically, different preamble patterns include any of the following forms:

[0169] a. Different preamble patterns have different starting position indicators, but the same clock acquisition part.

[0170] b. Different preamble patterns have the same starting position indication part, but different clock acquisition parts.

[0171] c. Different preamble patterns have different starting position indication parts and different clock acquisition parts.

[0172] d. Different preamble patterns are extended preamble patterns, which are used to indicate the access method of the first device.

[0173] e. Different preamble patterns have different types or sequences, and different types of preamble patterns or different sequences of preamble patterns have their own corresponding access methods.

[0174] If it is form a, the instruction information also includes any of the following instruction methods:

[0175] A. The starting position indication portion of the preamble pattern uses different level modes to indicate whether the first device accesses the network via a contention-based access method or a non-contention-based access method.

[0176] Optionally, if the start position indication portion of the preamble pattern uses a high + low level pattern, it indicates that the first device accesses the network via a contention-based access method. Optionally, if the start position indication portion of the preamble pattern uses a low + high level pattern or a high + low + high + low level pattern, it indicates that the first device accesses the network via a non-contention-based access method.

[0177] Of course, other level modes can also be used to indicate contention-based or non-contention-based access methods. For example, if the start position indication portion of the preamble pattern uses a high + low + high + low level mode, it indicates that the first device accesses the network through a contention-based access method. If the start position indication portion of the preamble pattern uses a low + high level mode, it indicates that the first device accesses the network through a non-contention-based access method. Exemplary embodiments of this disclosure include, but are not limited to, the level modes described above.

[0178] B. The start position indication portion of the preamble pattern uses whether the durations of the low and high levels are the same to indicate whether the first device accesses the network through a contention-based access method or a non-contention-based access method.

[0179] Optionally, if the start position indication portion of the preamble pattern uses low and high levels for the same duration, the first device is instructed to access the network via a contention-based access method; otherwise, the first device is instructed to access the network via a non-contention-based access method. Alternatively, if the start position indication portion of the preamble pattern uses low and high levels for different durations, the first device is instructed to access the network via a contention-based access method; otherwise, the first device is instructed to access the network via a non-contention-based access method.

[0180] C. Whether the length of each level in the first high-low level group of the preamble pattern's starting position indicator is the same as the length of the adjacent high-low-high level group is used to indicate whether the first device accesses the network through a contention-based access method or a non-contention-based access method.

[0181] Optionally, if the length of each level in the first high-low level group of the start position indication portion of the preamble pattern is the same as the length of the level in the adjacent next high-low-high level group, then the first device is indicated to access the network through contention-based access; otherwise, the first device is indicated to access the network through non-contention-based access.

[0182] Optionally, if the length of each level in the first high-low level group of the start position indication portion of the preamble pattern is the same as the length of the level in the adjacent next high-low-high level group, then the first device is instructed to access the network through a non-contention-based access method; otherwise, the first device is instructed to access the network through a contention-based access method.

[0183] Of course, besides considering whether the length of each level in the first high-low level group is the same as the length of the adjacent high-low-high level group to determine the access method, the access method can also be determined by whether the length of each level in the first high-low level group satisfies a second relationship with the length of the adjacent high-low-high level group. If so, the first device is instructed to access the network using a non-contention-based access method; otherwise, the first device is instructed to access the network using a contention-based access method. The second relationship can be a numerical relationship, a multiple relationship, or other relationships.

[0184] As an example, if the length of each level in the first high-low level group satisfies a 2x constraint relationship with the length of the level in the adjacent next high-low-high level group, then the first device is instructed to access the network via contention-based access; otherwise, the first device is instructed to access the network via contention-based access.

[0185] If it is form b, the starting position indication part is the same for different preamble patterns, but the clock acquisition part is different.

[0186] Optionally, if the duration of the clock acquisition section is not fixed, the first device is instructed to access the network via a contention-based access method; otherwise, the first device is instructed to access the network via a non-contention-based access method.

[0187] Optionally, if the duration of the clock acquisition section is not fixed, the first device is instructed to access the network in a non-contention-based access manner; otherwise, the first device is instructed to access the network in a contention-based access manner.

[0188] If it is form c, that is, different preamble patterns have different starting position indication parts and different clock acquisition parts, then it can be determined by the combination of form a and form b above.

[0189] For example, if the start position indication portion of the preamble pattern uses a high + low level mode (from form a), and the duration of the clock acquisition portion is not fixed, then the first device is instructed to access the network via a contention-based access method. If the start position indication portion of the preamble pattern uses a low + high level mode or a high + low + high + low level mode, and the duration of the clock acquisition portion is fixed (from form b), then the first device is instructed to access the network via a non-contention-based access method.

[0190] For example, if the start position indication part of the preamble pattern uses low and high levels for the same duration (from form a), and the duration of the clock acquisition part is not fixed, then the first device is instructed to access the network through a contention-based access method; if the start position indication part of the preamble pattern uses low and high levels for different durations (from form a), and the duration of the clock acquisition part is fixed, then the first device is instructed to access the network through a non-contention-based access method.

[0191] In form c, by combining the implementation methods of form a and form b, a variety of indication methods for the first device to access the network can be created, which will not be listed one by one.

[0192] If it is form d, different preamble patterns are extended preamble patterns, which are used to indicate the access method of the first device.

[0193] The extended preamble pattern includes extended indication information, which instructs the first device to access the network via either a contention-based or non-contention-based access method. Essentially, it adds an extra portion of extended indication information to the preamble to indicate the access method. This extended indication information can be 1 bit or any other number of bits, depending on the specific requirements or scenario.

[0194] The expanded instruction information includes any of the following forms:

[0195] In the first form, the content of the extended instruction information differs, instructing IoT network devices to access the network through either a contention-based access method or a non-contention-based access method.

[0196] Optionally, the extended indication information is 1 bit of indication information. If the 1 bit of indication information is 0, it indicates that the first device accesses the network through a contention-based access method. If the 1 bit of indication information is 1, it indicates that the first device accesses the network through a non-contention-based access method.

[0197] Optionally, the extended indication information is 1 bit of indication information. If the 1 bit of indication information is 0, it indicates that the first device accesses the network through a non-contention-based access method. If the 1 bit of indication information is 1, it indicates that the first device accesses the network through a contention-based access method.

[0198] The second form includes extended indication information, which includes high and low level information. Whether or not high and low levels are added to the extended preamble pattern indicates whether the IoT network device accesses the network through a contention-based access method or a non-contention-based access method.

[0199] Optionally, if the extended indication information indicates the presence of high or low levels, it indicates that the IoT network device accesses the network through a non-contention-based access method; otherwise, it indicates that the IoT network device accesses the network through a contention-based access method.

[0200] Optionally, if the extended indication information indicates the addition of high and low levels, it instructs the IoT network device to access the network via a contention-based access method; otherwise, it instructs the IoT network device to access the network via a non-contention-based access method.

[0201] This can be understood as implicitly indicating the presence of a portion of high and low levels in the extended indication information. If the extended indication information indicates the existence of this implicit indication, then one access method is indicated; otherwise, another access method is indicated.

[0202] The third form includes extended indication information, which includes high and low level information. The arrangement of the high and low levels added in the extended preamble pattern is different, indicating whether the IoT network device accesses the network through a contention-based access method or a non-contention-based access method.

[0203] For example, if the arrangement of high and low voltage levels added to the extended preamble pattern is pattern 1, it indicates that the IoT network device accesses the network through a contention-based access method; if the arrangement of high and low voltage levels added to the extended preamble pattern is pattern 2, it indicates that the IoT network device accesses the network through a non-contention-based access method. Of course, the specific arrangement of high and low voltage levels can be determined according to actual needs or scenarios, and the exemplary embodiments of this disclosure do not limit this.

[0204] If it is form e, different preamble patterns have different types or sequences, and different types of preamble patterns or different sequences of preamble patterns have their own corresponding access methods.

[0205] Among them, the type or sequence of preamble patterns is also called preamble sequence or pattern type.

[0206] Different access methods can be indicated by determining the type or sequence of different preamble patterns.

[0207] For example, if the type or sequence of the preamble pattern is sequence L1, it indicates that the IoT network device accesses the network through a contention-based access method; if the type or sequence of the preamble pattern is sequence L2, it indicates that the IoT network device accesses the network through a non-contention-based access method. Of course, the specific type or sequence of the preamble pattern can be determined according to actual needs or scenarios, and the exemplary embodiments of this disclosure do not limit this.

[0208] In an exemplary embodiment, if the indication information is power information, the power information includes any of the following forms:

[0209] In the first format, the power information includes multiple available power values, each with its own corresponding access method. This can be understood as pre-configured, pre-defined, or pre-indicating multiple available power values, each with its own corresponding access method.

[0210] Format 2: Power information includes a reference power value and a power offset value. The power offset value includes a presence and absence status, and different statuses indicate different access methods.

[0211] If the power offset value is absent, it indicates that the power information only includes the reference power value. If the power information includes both the power offset value and the reference power value, it indicates one access method. If the power information only includes the reference power value, it indicates another access method.

[0212] Optionally, in Form 1, among the various available power values, power value P1 indicates that the first device accesses the network via a two-step access method, power value P2 indicates that the first device accesses the network via a three-step access method, and power value P3 indicates that the first device accesses the network via either a two-step or three-step access method. P1, P2, and P3 all include states of presence and absence. It is worth noting that the power value can be positive, negative, or 0; in these cases, the power value indicates presence; otherwise, the power value indicates absence.

[0213] Based on this, if the indication information indicates a power value P1, then the first device is instructed to access the network via a two-step access method; if the indication information indicates a power value P2, then the first device is instructed to access the network via a three-step access method; if the indication information indicates a power value P3, then the first device is instructed to access the network via either a two-step or three-step access method.

[0214] This can be understood as indicating different power values ​​through indication information, which indirectly instructs the first device to use the access method corresponding to the corresponding power value when accessing the network through different power values.

[0215] Based on Form 1, if there are L1 access resources with corresponding power values ​​P1, L2 access resources with corresponding power values ​​P2, and L3 access resources with corresponding power values ​​P3, then L1, L2, and L3 ≥ 0. Where:

[0216] If the indication information indicates power value P1 and / or power value P3, or indicates access resources L1 and / or L3, then the first device is instructed to access the network via a two-step access method. If the indication information indicates power value P2 and / or power value P3, or indicates access resources L2 and / or L3, then the first device is instructed to access the network via a three-step access method.

[0217] This can be understood as follows: by predefining, preconfiguring, or indicating power values, and with corresponding access resources for each power value, the access method of the first device can be indicated by indicating the power value and / or indicating the access resources through the indication information.

[0218] In Form 2, if the power information includes a reference power value P4, and if the indication information indicates the reference power value P4, then the first device is instructed to access the network via a two-step access method. If the indication information indicates the reference power value P4 plus a power offset value P5, then the first device is instructed to access the network via a three-step access method. Alternatively, if the indication information indicates the reference power value P4, then the first device is instructed to access the network via a three-step access method. If the indication information indicates the reference power value P4 plus a power offset value P5, then the first device is instructed to access the network via a two-step access method.

[0219] This can be understood as follows: the power offset value P5 can be non-existent. When the power information includes both the reference power value P4 and the power offset value P5, it indicates one access method. When the power information only includes the reference power value P4, it indicates another access method.

[0220] Similarly, based on form two, if there are L4 access resources with a corresponding power reference value P4, and L5 access resources with a corresponding power reference value P4 + power offset value P5, then L4 and L5 ≥ 0. Where:

[0221] If the indication information indicates a reference power value P4 or an access resource L4, the first device is instructed to access the network via a two-step access method. If the indication information indicates a reference power value P4 plus a power offset value P5 or an access resource L5, the first device is instructed to access the network via a three-step access method. Alternatively, if the indication information indicates a reference power value P4 or an access resource L4, the first device is instructed to access the network via a three-step access method. If the indication information indicates a reference power value P4 plus a power offset value P5 or an access resource L5, the first device is instructed to access the network via a two-step access method.

[0222] This can be understood as follows: by predefining, preconfiguring, or indicating the reference power value and power offset value, and whether the power information only contains the reference power value or contains both the reference power value and the power offset value, the access method of the first device can be indicated by the indication information, which indicates the power information and / or the access resource method.

[0223] Optionally, if the power information includes multiple available power values, then power value P1' among the multiple available power values ​​is used to indicate that the first device accesses the network through a contention-based access method, power value P2' is used to indicate that the first device accesses the network through a non-contention-based access method, and power value P3' is used to indicate that the first device accesses the network through either a contention-based access method or a non-contention-based access method. P1', P2', and P3' all include present and non-present states.

[0224] Based on this, if the indication information indicates a power value P1', the first device is instructed to access the network through a contention-based access method; if the indication information indicates a power value P2', the first device is instructed to access the network through a non-contention-based access method; if the indication information indicates a power value P3', the first device is instructed to access the network through either a contention-based access method or a non-contention-based access method.

[0225] This can be understood as indicating different power values ​​through indication information, which indirectly instructs the first device to use the access method corresponding to the corresponding power value when accessing the network through different power values.

[0226] Based on Form 1, if L1' access resources are configured with power values ​​P1', L2' access resources are configured with power values ​​P2', and L3' access resources are configured with power values ​​P3', then L1', L2', and L3' ≥ 0. Where:

[0227] If the indication information indicates power values ​​P1' and / or P3', or indicates access resources L1' and / or L3', then the first device is instructed to access the network via a contention-based access method. If the indication information indicates power values ​​P2' and / or P3', or indicates access resources L2' and / or L3', then the first device is instructed to access the network via a non-contention-based access method.

[0228] This can be understood as follows: by predefining, preconfiguring, or indicating power values, and with corresponding access resources for each power value, the access method of the first device can be indicated by indicating the power value and / or indicating the access resources through the indication information.

[0229] In Form 2, if the power information includes a reference power value P4', and if the indication information indicates the reference power value P4', then the first device is instructed to access the network via a two-step access method. If the indication information indicates the reference power value P4' + power offset value P5', then the first device is instructed to access the network via a contention-based access method. Alternatively, if the indication information indicates the reference power value P4', then the first device is instructed to access the network via a contention-based access method. If the indication information indicates the reference power value P4' + power offset value P5', then the first device is instructed to access the network via a contention-based access method.

[0230] This can be understood as follows: the power offset value P5' can be non-existent. When the power information includes both the reference power value P4' and the power offset value P5', it indicates one access method. When the power information only includes the reference power value P4', it indicates another access method.

[0231] Similarly, based on form two, if L4' access resources are configured with a corresponding power reference value P4', and L5' access resources are configured with a corresponding power reference value P4' + power offset value P5', then L4' and L5' ≥ 0. Where:

[0232] If the indication information indicates a reference power value P4' or an access resource L4', the first device is instructed to access the network via a contention-based access method. If the indication information indicates a reference power value P4' + a power offset value P5' or an access resource L5', the first device is instructed to access the network via a contention-free access method. Alternatively, if the indication information indicates a reference power value P4' or an access resource L4', the first device is instructed to access the network via a contention-free access method. If the indication information indicates a reference power value P4' + a power offset value P5' or an access resource L5', the first device is instructed to access the network via a contention-based access method.

[0233] This can be understood as follows: by predefining, preconfiguring, or indicating the reference power value and power offset value, and whether the power information only contains the reference power value or contains both the reference power value and the power offset value, the access method of the first device can be indicated by the indication information, which indicates the power information and / or the access resource method.

[0234] The device access method in the exemplary embodiments of this disclosure receives Physical Reader to Device Channel (PRDCH) information, which carries indication information for indicating the access method of a first device. Based on the indication information, a message 1 is sent to a second device. The first device can obtain the second device's indication regarding the access method from the PRDCH information, thereby enabling the first device to access the network through different access methods, improving network resource utilization and network capacity.

[0235] Furthermore, in an exemplary embodiment of this disclosure, a device access method is also provided, applied to a second device, as shown in FIG3, the method comprising:

[0236] Step S310: Send Physical Reader to Device Channel (PRDCH) information to the first device. The PRDCH information carries indication information, which is used to indicate the access method of the first device.

[0237] It should be noted that the descriptions of PRDCH information and the indication information carried by PRDCH information have been detailed in the exemplary embodiments described above, and the specific details will not be repeated here. By pre-configuring or pre-defining, the second device can indicate different access methods for the first device to access the network through the indication information in the PRDCH information, enabling the first device to access the network through different access methods, thereby improving the utilization rate of network resources and network capacity.

[0238] In one exemplary embodiment, a message sent by the first device may also be received.

[0239] In an exemplary embodiment of this disclosure, a first device is also provided. Referring to FIG4, the first device 400 may include a first transceiver module 410. Specifically:

[0240] The first transceiver module 410 is configured to receive physical reader to device channel PRDCH information. The PRDCH information carries indication information, which is used to indicate the access method of the first device.

[0241] In one exemplary embodiment, a second transceiver module 420 is also included, configured to send message one according to the indication information.

[0242] Since the details of the various functional modules of the first device in the exemplary embodiments of this disclosure have been described in the exemplary embodiments of the first device access method described above, they will not be repeated here.

[0243] It should be noted that although several modules or units of the first device have been mentioned in the detailed description above, this division is not mandatory. In fact, according to embodiments of this disclosure, the features and functions of two or more modules or units described above can be embodied in one module or unit. Conversely, the features and functions of one module or unit described above can be further divided and embodied by multiple modules or units.

[0244] Furthermore, an exemplary embodiment of this disclosure also provides a second device, as shown in FIG5, the second device 500 comprising:

[0245] The access control module 510 is configured to send physical reader to device channel (PRDCH) information to the first device. The PRDCH information carries indication information, which is used to indicate the access method of the first device.

[0246] In one exemplary embodiment, a third transceiver module 520 is also included, configured to receive a message sent by the first device.

[0247] Since the details of the various functional modules of the second device in the exemplary embodiments of this disclosure have been described in the exemplary embodiments of the device access method described above, they will not be repeated here.

[0248] It should be noted that although several modules or units of the second device have been mentioned in the detailed description above, this division is not mandatory. In fact, according to embodiments of this disclosure, the features and functions of two or more modules or units described above can be embodied in one module or unit. Conversely, the features and functions of one module or unit described above can be further divided and embodied by multiple modules or units.

[0249] Furthermore, an exemplary embodiment of this disclosure also provides a communication system, as shown in FIG6, the communication system 600 including the first device 400 and the second device 500 described above.

[0250] The first device 400 is configured to receive Physical Reader to Device Channel (PRDCH) information sent by the second device. The PRDCH information carries indication information, which indicates the access method of the first device, and to send Message 1 according to the indication information. The second device 500 is configured to send Physical Reader to Device Channel (PRDCH) information to the first device and to receive Message 1 sent by the first device.

[0251] Exemplary embodiments of this disclosure also provide a computer program product. The computer program product includes a computer program that, when executed by a processor, implements the device access method described above.

[0252] In one implementation, the computer program product can be a tangible product containing a computer program, such as a computer-readable storage medium storing the computer program. The readable storage medium can be a storage medium based on electrical, magnetic, optical, electromagnetic, infrared, or other signals, including but not limited to: random access memory (RAM), read-only memory (ROM), magnetic tape, floppy disk, flash memory, hard disk drive (HDD), solid-state drive (SSD), etc. For example, the computer program product can be implemented as a non-volatile storage medium storing the computer program, such as read-only memory, NAND flash memory, etc.

[0253] In one implementation, the computer program product can be an intangible product containing a computer program. For example, the computer program product can be implemented as a virtual digital product, such as an executable file, installation package, or other digital file storing the computer program.

[0254] Computer program code can be written in one or more programming languages. Examples of programming languages ​​include C, Java, and C++. Program code can execute entirely on the user's computing device, partially on the user's computing device, or as a standalone software package. It can also execute partially on the user's computing device and partially on a remote computing device, or entirely on a remote computing device or server. In cases involving remote computing devices, the remote computing device can be connected to the user's computing device via any type of network, such as a local area network (LAN) or a wide area network (WAN), or it can be connected to an external computing device (e.g., via an internet connection provided by a mobile network operator).

[0255] Computer programs can be carried or transmitted via signals such as electrical, magnetic, optical, electromagnetic, and infrared rays. Electronic devices can convert signals carrying computer programs into digital signals, thereby running the computer programs. When a computer program runs on an electronic device, its code is used to cause the electronic device to execute (more specifically, the processor of the electronic device to execute) the method steps of various exemplary embodiments of this disclosure, such as the device access method described above.

[0256] Furthermore, in exemplary embodiments of this disclosure, yet another first device capable of implementing the above-described method is also provided. Those skilled in the art will understand that various aspects of this disclosure can be implemented as a system, method, or program product. Therefore, various aspects of this disclosure can be specifically implemented as: a completely hardware embodiment, a completely software embodiment (including firmware, microcode, etc.), or an embodiment combining hardware and software aspects, collectively referred to herein as a "circuit," "module," or "system."

[0257] The first device 700 according to such an embodiment of the present disclosure will now be described with reference to FIG7. The first device 700 shown in FIG7 is merely an example and should not be construed as limiting the functionality and scope of the embodiments of the present disclosure.

[0258] As shown in Figure 7, the first device 700 is presented in the form of a general-purpose computing device. The components of the first device 700 may include, but are not limited to: at least one processing unit 710, at least one storage unit 720, a bus 730 connecting different system components (including storage unit 720 and processing unit 710), and a display unit 740.

[0259] The storage unit stores program code that can be executed by the processing unit 710, causing the processing unit 710 to perform the steps described in the "Exemplary Methods" section of this specification according to various exemplary embodiments of this disclosure. For example, the processing unit 710 can perform the steps shown above.

[0260] Storage unit 720 may include a readable medium in the form of a volatile storage unit, such as random access memory (RAM) 721 and / or cache memory 722, and may further include a read-only memory (ROM) 723.

[0261] The storage unit 720 may also include a program / utility 724 having a set (at least one) of program modules 725, including but not limited to: an operating system, one or more application programs, other program modules, and program data, each or some combination of these examples may include an implementation of a network environment.

[0262] Bus 730 can represent one or more of several types of bus structures, including a memory cell bus or memory cell controller, a peripheral bus, a graphics acceleration port, a processing unit, or a local bus using any of the various bus structures.

[0263] The first device 700 can also communicate with one or more external devices 800 (e.g., keyboard, pointing device, Bluetooth device, etc.), one or more devices that enable a user to interact with the first device 700, and / or any device that enables the first device 700 to communicate with one or more other computing devices (e.g., router, modem, etc.). This communication can be performed via input / output (I / O) interface 750. Furthermore, the first device 700 can also communicate with one or more networks (e.g., local area network (LAN), wide area network (WAN), and / or public networks, such as the Internet) via network adapter 760. As shown, network adapter 760 communicates with other modules of the first device 700 via bus 730. It should be understood that, although not shown in the figures, other hardware and / or software modules can be used in conjunction with the first device 700, including but not limited to: microcode, device drivers, redundant processing units, external disk drive arrays, RAID systems, tape drives, and data backup storage systems.

[0264] Furthermore, in an exemplary embodiment of this disclosure, a second device capable of implementing the above-described method is also provided. This includes: a processor; and a memory for storing executable instructions of the processor; wherein the processor is configured to perform the method of the exemplary embodiment described above by executing the executable instructions. Those skilled in the art will understand that various aspects of this disclosure can be implemented as a system, method, or program product. Therefore, various aspects of this disclosure can be specifically implemented in the following forms: a completely hardware embodiment, a completely software embodiment (including firmware, microcode, etc.), or an embodiment combining hardware and software aspects, collectively referred to herein as a "circuit," "module," or "system." The structural block diagram of the second device can be found in the block diagram shown in FIG7, or any variation thereof, which will not be described further here.

[0265] From the above description of the embodiments, those skilled in the art will readily understand that the exemplary embodiments described herein can be implemented by software or by combining software with necessary hardware. Therefore, the technical solutions according to the embodiments of this disclosure can be embodied in the form of a software product, which can be stored in a non-volatile storage medium (such as a CD-ROM, USB flash drive, external hard drive, etc.) or on a network, including several instructions to cause a computing device (such as a personal computer, server, terminal device, or network device, etc.) to execute the methods according to the embodiments of this disclosure.

[0266] Furthermore, the above figures are merely illustrative of the processes included in the method according to exemplary embodiments of this disclosure and are not intended to be limiting. It is readily understood that the processes shown in the above figures do not indicate or limit the temporal order of these processes. Additionally, it is readily understood that these processes may be executed synchronously or asynchronously, for example, in multiple modules.

[0267] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This disclosure is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and embodiments are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the claims.

Claims

1. A device access method, applied to a first device, comprising: The device receives physical reader to device channel (PRDCH) information, which carries indication information used to indicate the access method of the first device.

2. The method of claim 1, wherein, Send message one according to the indicated information.

3. The method of claim 1, wherein, The access methods include at least one of two-step access, three-step access, contention-based access, and non-contention-based access.

4. The method according to any one of claims 1 to 3, wherein, The indication information is any one of the following: PRDCH information, PRDCH control information domain information, resource information, reference signal, and power information.

5. The method according to claim 4, wherein, If the indication information is PRDCH information, then the PRDCH information includes any of the following: First indication information indicating the access method, wherein the first indication information is used to indicate that the first device accesses the network through at least one of two-step access, three-step access, contention-based access, and non-contention-based access; The second indication information indicates whether message one contains the ID of the first device or the ID of the first device group; The third indication information is used to indicate whether the received PRDCH information contains message three.

6. The method according to claim 5, wherein, If the PRDCH information includes second indication information indicating the information content of message one, then the second indication information includes at least one bit; The first number of bits from the at least one bit indicates whether the first device's real ID or the first device group's real ID is included in the message, which is used to indicate whether the first device accesses the network through a two-step or three-step access method. Alternatively, a second number of bits from the at least one bit indicates whether the message contains a random ID of the first device or a random ID of the first device group, for indicating whether the first device accesses the network via contention-based access or non-contention-based access.

7. The method according to claim 5, wherein, If the PRDCH information is a third indication information indicating the content of message three, then the third indication information includes at least one bit; The third number of bits from the at least one bit indicates whether the PRDCH information includes message three or not, and is used to indicate whether the first device accesses the network via a three-step access or a two-step access method.

8. The method according to claim 4, wherein, If the indication information is PRDCH control information field information, then the PRDCH control information field information is in any of the following forms: The first field indicating the access method; The second field indicates the information content of message one; The third field of the information content of message three.

9. The method according to claim 8, wherein, If the PRDCH control information field information is a first field indicating the access method, the first field is in any of the following forms: The first domain includes a first subdomain and a second subdomain. The first subdomain is used to indicate that the first device accesses the network via a two-step or three-step access method, and the second subdomain is used to indicate that the first device accesses the network via a contention-based or non-contention-based access method. The first field includes bits for indicating two-step or three-step access and bits for indicating contention-based or non-contention-based access; The first field includes bits for indicating two-step or three-step access and bits for indicating contention-based or non-contention-based access; The first field includes bits for indicating any one of two-step access, three-step access, contention-based access, and non-contention-based access.

10. The method according to claim 9, wherein, If the first domain includes a first subdomain and a second subdomain, then the first subdomain includes M bits and the second subdomain includes N bits, where M and N are both positive integers; wherein, at least one of the M bits is used to indicate that the first device accesses the network via a two-step or three-step access method, and at least one of the N bits is used to indicate that the first device accesses the network via a contention-based or non-contention-based access method. Alternatively, the first field includes X bits, at least one of which is used to indicate that the first device accesses the network via a two-step or three-step access method, and at least one of the X bits is used to indicate that the first device accesses the network via a contention-based or non-contention-based access method, where X is a positive integer. Alternatively, the first field includes Y bits, at least one of which is used to indicate whether the first device accesses the network via a two-step or three-step access method, and to indicate whether the first device accesses the network via a contention-based or non-contention-based access method, where Y is a positive integer. Alternatively, the first field may include Z bits, at least one of which is used to indicate that the first device accesses the network through any one of two-step access, three-step access, contention-based access, and non-contention-based access, where Z is a positive integer.

11. The method according to claim 8, wherein, If the PRDCH control information field information is the second field indicating the information content of message one; The second field bit indication message one contains whether the first device's real ID or the first device group's real ID is present, indicating that the first device accesses the network through a two-step access or three-step access method. Alternatively, the second field may contain a random ID of the first device or a random ID of the first device group, indicating whether the first device accesses the network via contention-based access or non-contention-based access.

12. The method according to claim 11, wherein, If the PRDCH control information field information is a second field indicating the information content of message one, then the second field includes at least one bit; The fourth number of bits from the at least one bit indicates whether the message contains the real ID of the first device or the real ID of the first device group, and is used to indicate whether the first device accesses the network through a two-step access or a three-step access method. Alternatively, a fifth number of bits from the at least one bit indicates whether message one contains a random ID of the first device or a random ID of the first device group, for indicating whether the first device accesses the network via contention-based access or via non-contention-based access.

13. The method according to claim 8, wherein, If the PRDCH control information field information is the third field indicating the information content of message three; The bits in the third field indicate whether the first device transmits message three or not, indicating whether the first device accesses the network via a three-step access or a two-step access method.

14. The method according to claim 11, wherein, If the PRDCH control information field is a third field indicating the information content of message three, then the third field includes at least one bit; The sixth number of bits from the at least one bit indicates whether the first device transmits message three, and is used to indicate whether the first device accesses the network via a three-step access or a two-step access method.

15. The method according to claim 4, wherein, If the indication information is resource information, the resource information is configured with multiple access resources, and different access resources have their own corresponding access methods.

16. The method according to claim 15, wherein, Of the multiple access resources, y1 is used for the first device to access the network via a two-step access method, y2 is used for the first device to access the network via a three-step access method, and y3 is a multi-functional resource used for the first device to access the network via a two-step or three-step access method, where y1, y2, and y3 ≥ 0.

17. The method according to claim 16, wherein, The instruction information also includes any of the following instruction methods: The indication information is used to indicate the y1 access resources and / or y3 access resources to the first device or the first device group with two-step access, and to indicate the y2 access resources and / or y3 access resources to the first device or the first device group with three-step access; The indication information is used to indicate the plurality of access resources to the first device or the first device group, and to indicate that the y1 access resources and / or y3 access resources are valid to the first device or the first device group with two-step access, and to indicate that the y2 access resources and / or y3 access resources are valid to the first device or the first device group with two-step access.

18. The method according to claim 15, wherein, Of the multiple access resources, x1 access resources are used by the first device to access the network through a contention-based access method, x2 access resources are used by the first device to access the network through a non-contention-based access method, and x3 access resources are multi-functional resources used by the first device to access the network through either a contention-based or non-contention-based access method, where x1, x2, and x3 ≥ 0.

19. The method of claim 16, wherein, The instruction information also includes any of the following instruction methods: The indication information is used to indicate the x1 access resources and / or x3 access resources to the first device or the first device group based on contention-based access, and to indicate the x2 access resources and / or x3 access resources to the first device or the first device group based on non-contention-based access. The indication information is used to indicate to the first device or the first device group that the plurality of access resources are indicated, and to the first device or the first device group with contention-based access that the x2 access resources and / or x3 access resources are valid, and to the first device or the first device group with non-contention-based access that the x2 access resources and / or x3 access resources are valid.

20. The method according to claim 4, wherein, If the indication information is a reference signal, the reference signal is a synchronization signal or a pilot signal; The indication information is configured with a variety of available preamble patterns, and different preamble patterns have their own corresponding access methods.

21. The method according to claim 20, wherein, Of the various available preamble patterns, K1 preamble patterns are used for the first device to access the network via a two-step access method, K2 preamble patterns are used for the first device to access the network via a three-step access method, and K3 preamble patterns are used for the first device to access the network via either a two-step or three-step access method, where K1, K2, and K3 ≥ 0.

22. The method according to claim 21, wherein, Different preamble patterns include any of the following forms: Different preamble patterns have different starting position indication parts, but the clock acquisition parts are the same; Different preamble patterns have the same starting position indication part, but different clock acquisition parts; Different preamble patterns have different starting position indication parts and different clock acquisition parts; Different preamble patterns are extended preamble patterns, which are used to indicate the access method of the first device; Different preamble patterns have different types or sequences, and different types of preamble patterns or different sequences of preamble patterns have their own corresponding access methods.

23. The method according to claim 22, wherein, If different preamble patterns have different starting position indications but the same clock acquisition section, then the indication information further includes any of the following indication methods: The preamble pattern uses different level modes for the starting position indicator part to indicate whether the first device accesses the network via a two-step or three-step access method. The start position indicator of the preamble pattern uses whether the durations of low and high levels are the same to indicate whether the first device accesses the network via a two-step or three-step access method. The length of each level in the first high-low level group of the preamble pattern's starting position indicator section is the same as the length of the level in the adjacent high-low-high level group, indicating whether the first device accesses the network via a two-step or three-step access method.

24. The method according to claim 23, wherein, If the indication method of the indication information is different, and the level mode used in the starting position indication part of the preamble pattern is different, it is used to indicate whether the first device accesses the network through a two-step or three-step access method, wherein: If the start position indicator of the preamble pattern uses a high + low level mode, it indicates that the first device accesses the network through a two-step access method. Alternatively, if the start position indication portion of the preamble pattern uses a low + high level mode or a high + low + high + low level mode, it indicates that the first device accesses the network via a three-step access method.

25. The method according to claim 23, wherein, If the indication method of the indication information is whether the duration of low and high levels is the same in the start position indication part of the preamble pattern, it is used to indicate whether the first device accesses the network through a two-step or three-step access method, wherein: If the start position indication part of the preamble pattern uses low and high levels for the same duration, it indicates that the first device accesses the network via a two-step access method; otherwise, it indicates that the first device accesses the network via a three-step access method. Alternatively, if the start position indication portion of the preamble pattern uses different durations for low and high levels, it indicates that the first device accesses the network via a two-step access method; otherwise, it indicates that the first device accesses the network via a three-step access method.

26. The method according to claim 23, wherein, If the indication method of the indication information is whether the length of each level in the first high / low level group of the preamble pattern's starting position indication part is the same as the length of the adjacent high / low / high level group, it is used to indicate whether the first device accesses the network via a two-step or three-step access method, wherein: If the length of each level in the first high-low level group of the starting position indication part of the preamble pattern is the same as the length of the level in the adjacent high-low-high level group, then the first device is indicated to access the network in a two-step access manner; otherwise, the first device is indicated to access the network in a three-step access manner. Alternatively, if the length of each level in the first high-low level group of the starting position indication portion of the preamble pattern is the same as the length of the level in the adjacent next high-low-high level group, then the first device is indicated to access the network via a three-step access method; otherwise, the first device is indicated to access the network via a two-step access method.

27. The method according to claim 22, wherein, If different preamble patterns have the same start position indication but different clock acquisition parts, then: If the duration of the clock acquisition section is not fixed, the first device is instructed to access the network via a two-step access method; otherwise, the first device is instructed to access the network via a three-step access method. Alternatively, if the duration of the clock acquisition section is not fixed, the first device is instructed to access the network via a three-step access method; otherwise, the first device is instructed to access the network via a two-step access method.

28. The method according to claim 22, wherein, If the different preamble patterns are extended preamble patterns, the extended preamble patterns are used to indicate the access method of the first device, wherein: The extended preamble pattern includes extended instruction information, which instructs the first device to access the network via a two-step or three-step access method.

29. The method according to claim 28, wherein, The expanded instruction information includes any of the following forms: The different contents of the extended instruction information indicate that the IoT network device can access the network through a two-step or three-step access method; The extended indication information includes high and low level information. Whether or not high and low levels are added to the extended preamble pattern, it indicates that the IoT network device can access the network through a two-step or three-step access method. The extended indication information includes high and low level information. Different arrangements of the high and low levels added in the extended preamble pattern indicate that the IoT network device can access the network through a two-step or three-step access method.

30. The method according to claim 29, wherein, If the content of the extended instruction information is different, it instructs the IoT network device to access the network via a two-step or three-step access method, wherein: The extended indication information is a 1-bit indication information. If the 1-bit indication information is 0, it indicates that the first device accesses the network through a two-step access method. If the 1-bit indication information is 1, it indicates that the first device accesses the network through a three-step access method. Alternatively, the extended indication information is a 1-bit indication information. If the 1-bit indication information is 0, it indicates that the first device accesses the network through a three-step access method. If the 1-bit indication information is 1, it indicates that the first device accesses the network through a two-step access method.

31. The method according to claim 29, wherein, If the extended indication information includes high and low level information, then: If the extended indication information indicates the addition of high and low levels, it instructs the IoT network device to access the network via a three-step access method; otherwise, it instructs the IoT network device to access the network via a two-step access method. Alternatively, if the extended indication information indicates the addition of high and low levels, it instructs the IoT network device to access the network via a two-step access method; otherwise, it instructs the IoT network device to access the network via a three-step access method.

32. The method according to claim 20, wherein, Of the various available preamble patterns, Q1 preamble patterns are used for the first device to access the network via a contention-based access method, Q2 preamble patterns are used for the first device to access the network via a non-contention-based access method, and Q3 preamble patterns are used for the first device to access the network via either a contention-based or non-contention-based access method, where Q1, Q2, and Q3 ≥ 0.

33. The method according to claim 32, wherein, Different preamble patterns include any of the following forms: Different preamble patterns have different starting position indication parts, but the clock acquisition parts are the same; Different preamble patterns have the same starting position indication part, but different clock acquisition parts; Different preamble patterns have different starting position indication parts and different clock acquisition parts; Different preamble patterns are extended preamble patterns, which are used to indicate the access method of the first device; Different preamble patterns have different types or sequences, and different types of preamble patterns or different sequences of preamble patterns have their own corresponding access methods.

34. The method according to claim 33, wherein, If different preamble patterns have different starting position indications but the same clock acquisition section, then the indication information further includes any of the following indication methods: The start position indication portion of the preamble pattern uses different level modes to indicate whether the first device accesses the network via a contention-based access method or a non-contention-based access method. The start position indication portion of the preamble pattern uses whether the durations of low and high levels are the same to indicate whether the first device accesses the network through a contention-based access method or a non-contention-based access method. The length of each level in the first high-low level group of the preamble pattern's starting position indicator portion, and whether the length of each level in the first high-low-high level group is the same as the length of the adjacent next high-low-high level group, are used to indicate whether the first device accesses the network through a contention-based access method or a non-contention-based access method.

35. The method according to claim 34, wherein, If the indication method of the indication information is different in the level mode used by the start position indication part of the preamble pattern, it is used to indicate whether the first device accesses the network through a contention-based access method or a non-contention-based access method, wherein: If the start position indication part of the preamble pattern uses a high + low level mode, it indicates that the first device accesses the network through a contention-based access method. Alternatively, if the start position indication portion of the preamble pattern uses a low + high level mode or a high + low + high + low level mode, it indicates that the first device accesses the network via a contention-free access method.

36. The method according to claim 34, wherein, If the indication method of the indication information is whether the duration of low and high levels is the same in the start position indication part of the preamble pattern, it is used to indicate whether the first device accesses the network through a contention-based access method or a non-contention-based access method, wherein: If the start position indication portion of the preamble pattern uses low and high levels for the same duration, it indicates that the first device accesses the network via a contention-based access method; otherwise, it indicates that the first device accesses the network via a non-contention-based access method. Alternatively, if the start position indication portion of the preamble pattern uses different durations for low and high levels, it indicates that the first device accesses the network via a contention-based access method; otherwise, it indicates that the first device accesses the network via a non-contention-based access method.

37. The method of claim 34, wherein, If the indication method of the indication information is whether the length of each level in the first high / low level group of the preamble pattern's starting position indication portion is the same as the length of the adjacent high / low / high level group, it is used to indicate whether the first device accesses the network through a contention-based access method or a non-contention-based access method, wherein: If the length of each level in the first high-low level group of the start position indication portion of the preamble pattern is the same as the length of the level in the adjacent high-low-high level group, then the first device is indicated to access the network through a contention-based access method; otherwise, the first device is indicated to access the network through a non-contention-based access method. Alternatively, if the length of each level in the first high-low level group of the start position indication portion of the preamble pattern is the same as the length of the level in the adjacent next high-low-high level group, then the first device is instructed to access the network via a non-contention-based access method; otherwise, the first device is instructed to access the network via a contention-based access method.

38. The method according to claim 33, wherein, If different preamble patterns have the same start position indication but different clock acquisition parts, then: If the duration of the clock acquisition section is not fixed, the first device is instructed to access the network via a contention-based access method; otherwise, the first device is instructed to access the network via a non-contention-based access method. Alternatively, if the duration of the clock acquisition section is not fixed, the first device is instructed to access the network via a non-contention-based access method; otherwise, the first device is instructed to access the network via a contention-based access method.

39. The method according to claim 33, wherein, If the different preamble patterns are extended preamble patterns, the extended preamble patterns are used to indicate the access method of the first device, wherein: The extended preamble pattern includes extended indication information, which instructs the first device to access the network via a contention-based access method or a non-contention-based access method.

40. The method according to claim 39, wherein, The expanded instruction information includes any of the following forms: If the content of the extended instruction information is different, it indicates that the IoT network device can access the network through a contention-based access method or a non-contention-based access method. The extended indication information includes high and low level information. Whether or not high and low levels are added to the extended preamble pattern, it indicates that the IoT network device can access the network through a contention-based access method or a non-contention-based access method. The extended indication information includes high and low level information. Different arrangements of the high and low levels added in the extended preamble pattern indicate whether the IoT network device accesses the network through a contention-based access method or a non-contention-based access method.

41. The method according to claim 40, wherein, If the content of the extended instruction information is different, it instructs the IoT network device to access the network through either a contention-based access method or a non-contention-based access method, wherein: The extended indication information is a 1-bit indication information. If the 1-bit indication information is 0, it indicates that the first device accesses the network through a contention-based access method. If the 1-bit indication information is 1, it indicates that the first device accesses the network through a non-contention-based access method. Alternatively, the extended indication information is a 1-bit indication information. If the 1-bit indication information is 0, it indicates that the first device accesses the network through a non-contention-based access method. If the 1-bit indication information is 1, it indicates that the first device accesses the network through a contention-based access method.

42. The method according to claim 40, wherein, If the extended indication information includes high and low level information, then: If the extended indication information indicates the addition of a high or low level, it instructs the IoT network device to access the network through a non-contention-based access method; otherwise, it instructs the IoT network device to access the network through a contention-based access method. Alternatively, if the extended indication information indicates the addition of a high or low level, it instructs the IoT network device to access the network via a contention-based access method; otherwise, it instructs the IoT network device to access the network via a non-contention-based access method.

43. The method according to claim 4, wherein, If the indication information is power information, the power information includes any of the following forms: The power information includes a variety of available power values, and different power values ​​have their own corresponding access methods; The power information includes a reference power value and a power offset value. The power offset value includes a presence and absence status, with different statuses indicating different access methods.

44. The method according to claim 43, wherein, If the power information includes multiple available power values, then power value P1 is used to indicate that the first device accesses the network via a two-step access method, power value P2 is used to indicate that the first device accesses the network via a three-step access method, and power value P3 is used to indicate that the first device accesses the network via either a two-step or three-step access method. P1, P2, and P3 each include a present and a absent state, wherein: If the indication information indicates a power value P1, then the first device is instructed to access the network via a two-step access method; if the indication information indicates a power value P2, then the first device is instructed to access the network via a three-step access method; if the indication information indicates a power value P3, then the first device is instructed to access the network via either a two-step or three-step access method.

45. The method according to claim 44, wherein, If there are L1 access resources with corresponding power values ​​P1, L2 access resources with corresponding power values ​​P2, and L3 access resources with corresponding power values ​​P3, then L1, L2, and L3 ≥ 0, where: If the indication information indicates power value P1 and / or power value P3, or indicates access resources L1 and / or L3, then the first device is instructed to access the network via a two-step access method; if the indication information indicates power value P2 and / or power value P3, or indicates access resources L2 and / or L3, then the first device is instructed to access the network via a three-step access method.

46. ​​The method according to claim 43, wherein, If the power information includes a reference power value P4, then: If the indication information indicates a reference power value P4, then the first device is instructed to access the network via a two-step access method; if the indication information indicates a reference power value P4 plus a power offset value P5, then the first device is instructed to access the network via a three-step access method. Alternatively, if the indication information indicates a reference power value P4, then the first device is instructed to access the network via a three-step access method; if the indication information indicates a reference power value P4 plus a power offset value P5, then the first device is instructed to access the network via a two-step access method.

47. The method according to claim 46, wherein, If there are L4 access resources with a corresponding power reference value P4, and L5 access resources with a corresponding power reference value P4 + power offset value P5, then L4 and L5 ≥ 0, where: If the indication information indicates a reference power value P4 or an access resource L4, then the first device is instructed to access the network via a two-step access method. If the indication information indicates a reference power value P4 + a power offset value P5 or an access resource L5, then the first device is instructed to access the network via a three-step access method. Alternatively, if the indication information indicates a reference power value P4 or an access resource L4, the first device is instructed to access the network via a three-step access method. If the indication information indicates a reference power value P4 + a power offset value P5 or an access resource L5, the first device is instructed to access the network via a two-step access method.

48. The method according to claim 43, wherein, If the power information includes multiple available power values, then power value P1' indicates that the first device accesses the network via a contention-based access method, power value P2' indicates that the first device accesses the network via a non-contention-based access method, and power value P3' indicates that the first device accesses the network via either a contention-based or non-contention-based access method. P1', P2', and P3' each include a present and a non-present state, wherein: If the indication information indicates a power value P1', then the first device is instructed to access the network via a contention-based access method; if the indication information indicates a power value P2', then the first device is instructed to access the network via a non-contention-based access method; if the indication information indicates a power value P3', then the first device is instructed to access the network via either a contention-based access method or a non-contention-based access method.

49. The method according to claim 48, wherein, If L1' access resources are configured with power values ​​P1', L2' access resources are configured with power values ​​P2', and L3' access resources are configured with power values ​​P3', then L1', L2', and L3' ≥ 0, where: If the indication information indicates power value P1' and / or power value P3', or the indication information indicates access resources L1' and / or L3', then the first device is instructed to access the network through contention-based access; if the indication information indicates power value P2' and / or power value P3', or the indication information indicates access resources L2' and / or L3', then the first device is instructed to access the network through non-contention-based access.

50. The method according to claim 43, wherein, If the power information includes a reference power value P4', then: If the indication information indicates a reference power value P4', then the first device is instructed to access the network through a contention-based access method; if the indication information indicates a reference power value P4' + a power offset value P5', then the first device is instructed to access the network through a non-contention-based access method. Alternatively, if the indication information indicates a reference power value P4', then the first device is instructed to access the network via a non-contention-based access method; if the indication information indicates a reference power value P4' + a power offset value P5', then the first device is instructed to access the network via a contention-based access method.

51. The method according to claim 50, wherein, If there are L4' access resources with corresponding power reference values ​​P4' and L5' access resources with corresponding power reference values ​​P4' + power offset values ​​P5', then L4' and L5' ≥ 0, where: If the indication information indicates a reference power value P4' or an access resource L4', then the first device is instructed to access the network through a contention-based access method. If the indication information indicates a reference power value P4' + a power offset value P5' or an access resource L5', then the first device is instructed to access the network through a non-contention-based access method. Alternatively, if the indication information indicates a reference power value P4' or an access resource L4', then the first device is instructed to access the network via a non-contention-based access method. If the indication information indicates a reference power value P4' + a power offset value P5' or an access resource L5', then the first device is instructed to access the network via a contention-based access method.

52. A device access method, applied to a second device, comprising: The Physical Reader to Device Channel (PRDCH) information is sent to the first device. The PRDCH information carries indication information, which is used to indicate the access method of the first device.

53. The method according to claim 52, wherein: Receive message 1 sent by the first device.

54. A first device, comprising: The first transceiver module is configured to receive physical reader-to-device channel (PRDCH) information, which carries indication information used to indicate the access method of the first device.

55. The first device according to claim 54, wherein, The first device also includes: The second transceiver module is configured to send message one according to the instruction information.

56. A second device, comprising: The access control module is configured to send Physical Reader to Device Channel (PRDCH) information to the first device. The PRDCH information carries indication information, which is used to indicate the access method of the first device.

57. The second device according to claim 56, wherein, The second device also includes: The third transceiver module is configured to receive message one sent by the first device.

58. A communication system, comprising: The first device as described in claim 54 or 55, and the second device as described in claim 56 or 57.

59. A computer program product comprising a computer program that, when executed by a processor, implements the method of any one of claims 1 to 53.

60. A first device, comprising: processor; as well as Memory for storing the executable instructions of the processor; The processor is configured to perform the method of any one of claims 1 to 51 by executing the executable instructions.

61. A second device, comprising: processor; as well as Memory for storing the executable instructions of the processor; The processor is configured to perform the method of claim 52 or 53 by executing the executable instructions.

Images