Indication method, apparatus and device of aiot resource

Abstract

The application provides an indication method, device and equipment of A-IoT resources. The indication method comprises: a first device sending first information to a second device, the first information being used for indicating at least one first resource reserved and occupied by the first device, the first resource being used for A-IoT communication. By using the method, in an out-of-coverage scenario, the second device can obtain the first resource reserved and occupied by the first device according to the first information, so that the problem of resource collision can be avoided when the second device selects A-IoT resources, and the A-IoT device and the first device can communicate in the out-of-coverage scenario.

Description

Technical Field

[0001] This application relates to the field of communication technology, and in particular to a method, apparatus and device for indicating environmental Internet of Things (A-IoT) resources. Background Technology

[0002] To support the interconnection of hundreds of billions of things and address the high network construction costs and operational costs associated with large-scale deployments of IoT devices, such as battery replacements, a new type of IoT device is designed: Ambient IoT (A-IoT) devices. A-IoT devices have little or no energy storage capacity, and are characterized by low complexity, low cost, and low power consumption, which will contribute to the realization of ubiquitous sensing and interconnection.

[0003] For A-IoT communication, within base station coverage areas, the base station or a terminal (or other reader) sends an A-IoT downlink channel to the device, instructing the A-IoT device to perform backscattering of the incident signal on the time-frequency resources scheduled by the reader, or to autonomously send an uplink response signal. In other words, the transmission resources used for A-IoT communication between the reader and the device are controlled and allocated by the base station, so there is no collision issue with A-IoT transmission resources. However, in scenarios outside base station coverage, since there is no base station to schedule A-IoT transmission resources, the reader (i.e., the terminal) can only autonomously select suitable resources to communicate with the A-IoT device. Because the terminal arbitrarily selects resources, resource collisions can occur. Summary of the Invention

[0004] The purpose of this application is to provide a method, apparatus, and device for indicating A-IoT resources, so as to solve the problem that the transmission resources selected by the terminal are prone to collision in scenarios outside the coverage of existing base stations.

[0005] To address the aforementioned problems, embodiments of this application provide a method for indicating environmental Internet of Things (A-IoT) resources, the method comprising:

[0006] The first device sends first information to the second device, the first information being used to indicate at least one first resource reserved by the first device, the first resource being used for A-IoT communication;

[0007] Wherein, the first device is a first terminal, and the second device is a second terminal;

[0008] Alternatively, the first device may be a first A-IoT device, and the second device may be a second A-IoT device.

[0009] The first information includes at least one of the following:

[0010] First indication information, wherein the first indication information is used to indicate the time domain information of the first resource;

[0011] The second indication information is used to indicate the frequency domain information of the first resource;

[0012] Resource cycle information, wherein the resource cycle information is used to indicate the cycle value of the first resource;

[0013] Priority information, which indicates the priority value of the first resource.

[0014] The first piece of information is direct link control information.

[0015] The first resource occupies one or more consecutive transmission time intervals in the time domain.

[0016] The first resource occupies one or more consecutive sub-channels in the frequency domain.

[0017] The transmission time interval includes at least one of the following: a time slot, a mini time slot, and N orthogonal frequency division multiplexing (OFDM) symbols, where N is a positive integer.

[0018] In cases where the first information indicates two or more first resources...

[0019] The two or more first resources occupy the same number of sub-channels in the frequency domain.

[0020] The first resource occupies at least one time slot;

[0021] In each time slot, Automatic Gain Control (AGC) and Guard Interval (GP) each occupy one OFDM symbol.

[0022] Wherein, the first resource is a resource in the first resource pool; wherein, the resources in the first resource pool are used for communication between the terminal and the A-IoT device, or the resources in the first resource pool are used for the transmission of A-IoT-related information between terminals.

[0023] The first resource pool includes at least one sub-channel in the frequency domain, and each sub-channel occupies a contiguous resource block.

[0024] And / or,

[0025] The first resource pool includes at least one resource cycle.

[0026] The first resource pool includes: a resource pool for reader-to-device R2D transmission, and / or a resource pool for device-to-reader D2R transmission.

[0027] The method further includes:

[0028] Receive second information sent by at least one third device, the second information being used to indicate that the third device has reserved resources for A-IoT communication;

[0029] A second resource pool is determined based on the second information; the resources in the second resource pool have not been reserved by the third device.

[0030] Based on the second resource pool, at least one first resource reserved for the first device is determined.

[0031] The receipt of the second information sent by at least one third device includes:

[0032] Within a resource sensing window, the first device receives second information sent by at least one third device; wherein the resource sensing window is a time window corresponding to the time required for the first device to perform one resource sensing operation.

[0033] The method further includes:

[0034] The first device divides the at least one first resource reserved for the R2D transmission into a first resource set for R2D transmission and a second resource set for D2R transmission.

[0035] The first device uses the first resource set to send a paging message for A-IoT communication or a random access message 2 for A-IoT communication;

[0036] The paging message or random access message 2 used for A-IoT communication carries information about the second resource set.

[0037] The paging message used for A-IoT communication also carries R2D transmission parameter information and / or D2R transmission parameter information.

[0038] The method further includes:

[0039] The first device sends a third message to the second device, the third message being used to instruct the first device to release the first resource that was reserved.

[0040] Wherein, the second resource occupied by the first information and the first resource indicated by the first information occupy N1 consecutive time slots in the time domain; N1 is an integer greater than or equal to 1;

[0041] The second resource occupancy refers to part or all of the frequency domain resources of the K1 OFDM symbols in the first time slot of the N1 time slots, where K1 is an integer greater than or equal to 2;

[0042] The first resource indicated by the first information includes: resources in the N1 time slots other than the second resource, the OFDM symbols occupied by AGC, and the OFDM symbols occupied by GP.

[0043] Wherein, the second resource occupied by the first information and the first resource indicated by the first information occupy N2 consecutive time slots in the time domain; N2 is an integer greater than or equal to 1;

[0044] The second resource occupancy refers to part or all of the frequency domain resources of the K2 OFDM symbols in the first time slot of the N2 time slots, where K2 is an integer greater than or equal to 2;

[0045] The first resource indicated by the first information includes: resources in the N2 time slots other than the second resource, the OFDM symbols occupied by AGC, and the OFDM symbols occupied by GP.

[0046] The first device sends first information to the second device, including:

[0047] The first device sends first information to the second device once within a resource perception window; wherein, the resource perception window is the time window corresponding to the time required for the first device to perform one resource perception.

[0048] Wherein, K1 and / or K2 can take any of the following values:

[0049] M-2, where M is the number of OFDM symbols contained in a time slot;

[0050] A predefined value, wherein the predefined value is less than M-2.

[0051] This application embodiment also provides a method for indicating A-IoT resources, the method comprising:

[0052] The second device receives first information sent by the first device, the first information being used to indicate at least one first resource reserved by the first device, the first resource being used for A-IoT communication;

[0053] Wherein, the first device is a first terminal, and the second device is a second terminal;

[0054] Alternatively, the first device may be a first A-IoT device, and the second device may be a second A-IoT device.

[0055] The first information includes at least one of the following:

[0056] First indication information, wherein the first indication information is used to indicate the time domain information of the first resource;

[0057] The second indication information is used to indicate the frequency domain information of the first resource;

[0058] Resource cycle information, wherein the resource cycle information is used to indicate the cycle value of the first resource;

[0059] Priority information, which indicates the priority value of the first resource.

[0060] The first piece of information is direct link control information.

[0061] The first resource occupies one or more consecutive transmission time intervals in the time domain.

[0062] The first resource occupies one or more consecutive sub-channels in the frequency domain.

[0063] The transmission time interval includes at least one of the following: a time slot, a mini time slot, and N orthogonal frequency division multiplexing (OFDM) symbols, where N is a positive integer.

[0064] In cases where the first information indicates two or more first resources...

[0065] The two or more first resources occupy the same number of sub-channels in the frequency domain.

[0066] The first resource occupies at least one time slot;

[0067] In each time slot, Automatic Gain Control (AGC) and Guard Interval (GP) each occupy one OFDM symbol.

[0068] Wherein, the first resource is a resource in the first resource pool; wherein, the resources in the first resource pool are used for communication between the terminal and the A-IoT device, or the resources in the first resource pool are used for the transmission of A-IoT-related information between terminals.

[0069] The first resource pool includes at least one sub-channel in the frequency domain, and each sub-channel occupies a contiguous resource block.

[0070] And / or,

[0071] The first resource pool includes at least one resource cycle.

[0072] The first resource pool includes: a resource pool for reader-to-device R2D transmission, and / or a resource pool for device-to-reader D2R transmission.

[0073] The method further includes:

[0074] The second device receives a third message sent by the first device, the third message being used to instruct the first device to release the first resource that was reserved.

[0075] Wherein, the second resource occupied by the first information and the first resource indicated by the first information occupy N1 consecutive time slots in the time domain; N1 is an integer greater than or equal to 1;

[0076] The second resource occupancy refers to part or all of the frequency domain resources of the K1 OFDM symbols in the first time slot of the N1 time slots, where K1 is an integer greater than or equal to 2;

[0077] The first resource indicated by the first information includes: resources in the N1 time slots other than the second resource, the OFDM symbols occupied by AGC, and the OFDM symbols occupied by GP.

[0078] Wherein, the second resource occupied by the first information and the first resource indicated by the first information occupy N2 consecutive time slots in the time domain; N2 is an integer greater than or equal to 1;

[0079] The second resource occupancy refers to part or all of the frequency domain resources of the K2 OFDM symbols in the first time slot of the N2 time slots, where K2 is an integer greater than or equal to 2;

[0080] The first resource indicated by the first information includes: resources in the N2 time slots other than the second resource, the OFDM symbols occupied by AGC, and the OFDM symbols occupied by GP.

[0081] The second device receives the first information sent by the first device, including:

[0082] The second device receives the first information once within a resource perception window of the first device, wherein the resource perception window is the time window corresponding to the time required for the first device to perform one resource perception.

[0083] Wherein, K1 and / or K2 can take any of the following values:

[0084] M-2, where M is the number of OFDM symbols contained in a time slot;

[0085] A predefined value, wherein the predefined value is less than M-2.

[0086] This application also provides a first device, including a memory, a transceiver, and a processor:

[0087] A memory for storing computer programs; a transceiver for sending and receiving data under the control of the processor; and a processor for reading the computer programs from the memory and performing the following operations:

[0088] Send first information to the second device, the first information being used to indicate at least one first resource reserved by the first device, the first resource being used for A-IoT communication;

[0089] Wherein, the first device is a first terminal, and the second device is a second terminal;

[0090] Alternatively, the first device may be a first A-IoT device, and the second device may be a second A-IoT device.

[0091] This application also provides a second device, including a memory, a transceiver, and a processor:

[0092] A memory for storing computer programs; a transceiver for sending and receiving data under the control of the processor; and a processor for reading the computer programs from the memory and performing the following operations:

[0093] Receive first information sent by a first device, the first information being used to indicate at least one first resource reserved by the first device, the first resource being used for A-IoT communication;

[0094] Wherein, the first device is a first terminal, and the second device is a second terminal;

[0095] Alternatively, the first device may be a first A-IoT device, and the second device may be a second A-IoT device.

[0096] This application embodiment also provides an A-IoT resource indication device, applied to a first device, the device comprising:

[0097] A sending unit is configured to send first information to a second device, the first information being used to indicate at least one first resource reserved by the first device, the first resource being used for A-IoT communication;

[0098] Wherein, the first device is a first terminal, and the second device is a second terminal;

[0099] Alternatively, the first device may be a first A-IoT device, and the second device may be a second A-IoT device.

[0100] This application embodiment also provides an A-IoT resource indication device, applied to a second device, the device comprising:

[0101] A receiving unit is configured to receive first information sent by a first device, the first information being used to indicate at least one first resource reserved by the first device, the first resource being used for A-IoT communication;

[0102] Wherein, the first device is a first terminal, and the second device is a second terminal;

[0103] Alternatively, the first device may be a first A-IoT device, and the second device may be a second A-IoT device.

[0104] This application also provides a processor-readable storage medium storing a program for causing the processor to execute the method described above.

[0105] The above-mentioned technical solution of this application has at least the following beneficial effects:

[0106] In the A-IoT resource indication method, apparatus, and device of this application embodiment, a first device sends first information to a second device, indicating to the second device through the first information that the first device has reserved at least one first resource; a first terminal uses the first resource to conduct A-IoT communication with the A-IoT device. Using this method, in scenarios outside base station coverage, the second device can obtain the first resource reserved by the first device based on the first information, thereby avoiding resource collisions when the second device selects A-IoT resources, and enabling communication between the A-IoT device and the first device in scenarios outside base station coverage. Attached Figure Description

[0107] Figure 1 This is a schematic diagram illustrating one of the steps of the method for indicating A-IoT resources provided in an embodiment of this application;

[0108] Figure 2 A second schematic diagram illustrating the steps of the A-IoT resource indication method provided in this application embodiment.

[0109] Figure 3 A schematic diagram illustrating Example 1 provided in the embodiments of this application;

[0110] Figure 4 This is a schematic diagram illustrating one of the examples of Example 2 provided in the embodiments of this application;

[0111] Figure 5 This is a second schematic diagram illustrating Example 2 provided in the embodiments of this application;

[0112] Figure 6 A schematic diagram illustrating Example 3 provided in the embodiments of this application;

[0113] Figure 7 This is a schematic diagram illustrating one of the four examples provided in the embodiments of this application;

[0114] Figure 8 This is a second schematic diagram illustrating Example 4 provided in the embodiments of this application;

[0115] Figure 9 This is a schematic diagram illustrating one of the five examples provided in the embodiments of this application;

[0116] Figure 10 This is a second schematic diagram illustrating Example 5 provided in the embodiments of this application;

[0117] Figure 11 This is a schematic diagram illustrating one of the six examples provided in the embodiments of this application;

[0118] Figure 12 This is a second schematic diagram illustrating Example Six provided in the embodiments of this application;

[0119] Figure 13 This is a schematic diagram of the structure of the first device provided in an embodiment of this application;

[0120] Figure 14 This is a schematic diagram showing the structure of the second device provided in an embodiment of this application;

[0121] Figure 15 This is one of the structural schematic diagrams of an indication device for A-IoT resources provided in an embodiment of this application;

[0122] Figure 16 This is a second schematic diagram illustrating the structure of the indicator device for A-IoT resources provided in this application embodiment. Detailed Implementation

[0123] To make the technical problems, technical solutions and advantages of this application clearer, a detailed description will be provided below in conjunction with the accompanying drawings and specific embodiments.

[0124] In the embodiments of this application, the term "and / or" describes the relationship between associated objects, indicating that three relationships can exist. For example, A and / or B can represent three cases: A alone, A and B simultaneously, and B alone. The character " / " generally indicates that the preceding and following associated objects have an "or" relationship.

[0125] In the embodiments of this application, the term "multiple" refers to two or more, and other quantifiers are similar.

[0126] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0127] The technical solutions provided in this application can be applied to a variety of systems. For example, applicable systems may include Long Term Evolution (LTE) systems, LTE Frequency Division Duplex (FDD) systems, LTE Time Division Duplex (TDD) systems, Long Term Evolution Advanced (LTE-A) systems, Universal Mobile Telecommunications System (UMTS), Worldwide Interoperability for Microwave Access (WiMAX) systems, 5G New Radio (NR) systems and their evolved communication systems, and 6G (sixth generation mobile communication technology) systems. These systems may include terminal equipment and network equipment. The systems may also include a core network component, such as the Evolved Packet Core (EPC) and the 5G Core Network (5GC).

[0128] The terminal devices involved in the embodiments of this application can be devices that provide voice and / or data connectivity to users, handheld devices with wireless connectivity, or other processing devices connected to a wireless modem. The names of the terminal devices may differ in different systems; for example, in a 5G system, a terminal device can be called User Equipment (UE). Wireless terminal devices can communicate with one or more core networks (CNs) via a Radio Access Network (RAN). Wireless terminal devices can be mobile terminal devices, such as mobile phones (or "cellular" phones) and computers with mobile terminal devices, for example, portable, pocket-sized, handheld, computer-embedded, or vehicle-mounted mobile devices that exchange voice and / or data with the RAN. Examples include Personal Communication Service (PCS) phones, cordless phones, Session Initiated Protocol (SIP) phones, Wireless Local Loop (WLL) stations, and Personal Digital Assistants (PDAs). Wireless terminal equipment can also be referred to as a system, subscriber unit, subscriber station, mobile station, mobile station, remote station, access point, remote terminal, access terminal, user terminal, user agent, or user device, but is not limited to these terms in the embodiments of this application.

[0129] The network device involved in this application embodiment can be a base station, which may include multiple cells providing services to terminals. Depending on the specific application, a base station may also be called an access point, or a device in an access network that communicates with a wireless terminal device through one or more sectors on the air interface, or other names. The network device can be used to exchange received air frames with Internet Protocol (IP) packets, acting as a router between the wireless terminal device and the rest of the access network, where the rest of the access network may include an Internet Protocol (IP) communication network. The network device can also coordinate the attribute management of the air interface. For example, the network equipment involved in the embodiments of this application can be a base transceiver station (BTS) in a Global System for Mobile communications (GSM) or Code Division Multiple Access (CDMA), a NodeB in a Wide-band Code Division Multiple Access (WCDMA) system, an evolved Node B (eNB or e-NodeB) in a long term evolution (LTE) system, a 5G base station (gNB) in a next generation system, a Home evolved Node B (HeNB), a relay node, a femto, a pico, etc., and is not limited in the embodiments of this application. In some network structures, the network equipment may include centralized unit (CU) nodes and distributed unit (DU) nodes, and the centralized unit and distributed unit may be geographically separated.

[0130] Network devices and terminal devices can each use one or more antennas for multiple-input multiple-output (MIMO) transmission. MIMO transmission can be single-user MIMO (SU-MIMO) or multiple-user MIMO (MU-MIMO). Depending on the configuration and number of antenna combinations, MIMO transmission can be 2D-MIMO, 3D-MIMO, FD-MIMO, or massive-MIMO, and can also be diversity transmission, precoding transmission, or beamforming transmission, etc.

[0131] Currently, A-IoT devices can be divided into the following three types:

[0132] Type 1 devices: Peak power consumption is approximately 1 μW, with energy storage capability, and initial sampling frequency offset (SFO) up to 10. X The device has neither DL amplification nor UL amplification capabilities. The device's UL transmission is achieved through backscattering on an externally provided carrier wave.

[0133] Type 2a devices: peak power consumption ≤ several hundred μW, with energy storage capability, and initial sampling frequency offset (SFO) up to 10. X ppm, the device has DL and / or UL amplification capabilities. The device's UL transmission is backscattered on an externally provided carrier.

[0134] Type 2b devices: Peak power consumption ≤ several hundred μW, with energy storage capability, and initial sampling frequency offset (SFO) up to 10. X ppm, the device has DL and / or UL amplification capabilities. The UL transmission of the device is generated internally.

[0135] like Figure 1 As shown in the figure, this application embodiment provides a method for indicating environmental Internet of Things (A-IoT) resources, the method comprising:

[0136] Step 101: The first device sends first information to the second device, the first information being used to indicate at least one first resource reserved by the first device, the first resource being used for A-IoT communication;

[0137] Wherein, the first device is a first terminal, and the second device is a second terminal;

[0138] Alternatively, the first device may be a first A-IoT device, and the second device may be a second A-IoT device.

[0139] Optionally, A-IoT communication includes at least one of R2D (Reader to Device) transmission and D2R (Device to Reader) transmission.

[0140] Optionally, the second device that receives the first information can determine at least one first resource reserved by the first device. When the second device selects A-IoT resources, it avoids selecting the first resource reserved by the first device, thereby avoiding resource collision and ensuring communication between the first device and the A-IoT device.

[0141] Optionally, if the first device is a first terminal and the second device is a second terminal, the first information is Sidelink Control Information (SCI).

[0142] In one implementation, the first information may also be referred to as the first A-IoT transmission resource occupancy information. This first A-IoT transmission resource occupancy information may be physical layer control information, or a MAC (Media Access Control) message, or an RRC (Radio Resource Control) message; no specific limitation is made here.

[0143] Optionally, the SCI used to indicate at least one first resource occupies 12 available OFDM (Orthogonal Frequency Division Multiplexing) symbols in a time slot.

[0144] In this embodiment, a first device sends first information to a second device, indicating to the second device through the first information that the first device has reserved at least one first resource; the first terminal uses the first resource to conduct A-IoT communication with the A-IoT device. Using this method, in scenarios outside base station coverage, the second device can obtain the first resource reserved by the first device based on the first information, thereby avoiding resource collisions when the second device selects A-IoT resources, and enabling communication between the A-IoT device and the first device in scenarios outside base station coverage.

[0145] In at least one embodiment of this application, the first information includes at least one of the following:

[0146] First indication information, wherein the first indication information is used to indicate the time domain information of the first resource;

[0147] The second indication information is used to indicate the frequency domain information of the first resource;

[0148] Resource cycle information, which is used to indicate the cycle value of the first resource; if the value of the resource cycle information is 0, it indicates that the first resource is non-periodic, or it can also be called a one-time use resource;

[0149] Priority information, which indicates the priority value of the first resource.

[0150] For example, the time-domain information of the first resource includes at least one TTI (Transmission Time Interval), which is a time-domain resource allocation unit.

[0151] Optionally, the transmission time interval (TTI) includes at least one of the following: a time slot, a mini time slot, and N OFDM symbols; where N is a positive integer.

[0152] For example, the frequency domain information of the first resource includes at least one sub-channel or at least one resource block.

[0153] As an optional embodiment, the first resource occupies one or more consecutive transmission time intervals in the time domain.

[0154] As another alternative embodiment, the first resource occupies one or more consecutive sub-channels in the frequency domain.

[0155] In at least one embodiment of this application, when the first information indicates two or more first resources, the two or more first resources occupy the same number of sub-channels in the frequency domain.

[0156] As an optional embodiment, the first resource occupies at least one time slot; in each time slot, Automatic Gain Control (AGC) and Guard Period (GP) each occupy one OFDM symbol.

[0157] In at least one embodiment of this application, the first resource is a resource in a first resource pool; wherein, the resources in the first resource pool are used for communication between the terminal and the A-IoT device, or for the transmission of A-IoT-related information between terminals.

[0158] Optionally, the first resource pool includes at least one sub-channel in the frequency domain, each sub-channel occupying a contiguous resource block; and / or, the first resource pool includes at least one resource period. That is, the first resource pool is pre-configured with at least one resource period. This resource period can be determined based on the TTI (Time Interval), for example, the value of the resource period is a multiple of the TTI value.

[0159] For example, the number of PRBs (Physical Resource Blocks) occupied by each sub-channel can be any one of {1,2,3,4,5,6,7,8}.

[0160] In at least one embodiment of this application, the first resource pool includes: a resource pool for reader-to-device R2D transmission, and / or a resource pool for device-to-reader D2R transmission.

[0161] Optionally, the first resource pool is a pre-configured resource pool. In this embodiment, a single overall first resource pool can be pre-configured, where resources for R2D transmission and resources for D2R transmission are both located within this overall first resource pool. Alternatively, two different resource pools can be pre-configured. For example, there could be a first resource pool No. 1 and a first resource pool No. 2, where resources for R2D transmission are located in first resource pool No. 1, and resources for D2R transmission are located in first resource pool No. 2.

[0162] In at least one embodiment of this application, the method further includes:

[0163] Receive second information sent by at least one third device, the second information being used to indicate that the third device has reserved resources for A-IoT communication;

[0164] A second resource pool is determined based on the second information; the resources in the second resource pool have not been reserved by the third device.

[0165] Based on the second resource pool, at least one first resource reserved for the first device is determined.

[0166] Optionally, receiving the second information sent by at least one third device includes:

[0167] Within a resource sensing window, the first device receives second information sent by at least one third device; wherein the resource sensing window is a time window corresponding to the time required for the first device to perform one resource sensing operation.

[0168] For example, within the resource awareness window, the first device receives SCI sent by other devices (such as a third device), determines the resource occupancy status, thereby determining the second resource pool that is not occupied by other terminals, and determines the first resource that needs to be occupied from the second resource pool; and determines to use the first resource for A-IoT communication, such as inventory, commands, sensing, positioning, etc.

[0169] In at least one embodiment of this application, the method further includes:

[0170] The first device divides the at least one first resource reserved for the R2D transmission into a first resource set for R2D transmission and a second resource set for D2R transmission.

[0171] The first device uses the first resource set to send a paging message for A-IoT communication or a random access message 2 (msg2) for A-IoT communication;

[0172] The paging message or random access message 2 used for A-IoT communication carries information about the second resource set.

[0173] Optionally, the paging message for A-IoT communication or the random access message 2 for A-IoT communication carries information about the second resource set, including at least one of the following: the time-domain resource location TRA of the second resource set, the frequency-domain resource location FRA of the second resource set, and the resource period value of the second resource set.

[0174] Optionally, the paging message for A-IoT communication also carries R2D transmission parameter information and / or D2R transmission parameter information, such as modulation and coding scheme, code rate, etc.

[0175] In at least one embodiment of this application, the method further includes:

[0176] The first device sends a third message to the second device, the third message being used to instruct the first device to release the first resource that it has reserved. Optionally, the third message is an SCI (Search Engine Component).

[0177] As an optional embodiment, the first information indicates the method by which the first device reserves at least one first resource:

[0178] Multiple first information items respectively indicate at least one first resource reserved by the first device;

[0179] or,

[0180] A first message indicates that the first device has reserved at least one first resource.

[0181] In one implementation, when multiple first information items respectively indicate at least one first resource reserved by the first device, the second resource occupied by the first information and the first resource indicated by the first information occupy N1 consecutive time slots in the time domain; N1 is an integer greater than or equal to 1.

[0182] The second resource occupancy refers to part or all of the frequency domain resources of the K1 OFDM symbols in the first time slot of the N1 time slots, where K1 is an integer greater than or equal to 2;

[0183] The first resource indicated by the first information includes: resources in the N1 time slots other than the second resource, the OFDM symbols occupied by AGC, and the OFDM symbols occupied by GP.

[0184] Where K1 can take any of the following values:

[0185] M-2, where M is the number of OFDM symbols contained in a time slot;

[0186] A predefined value A, wherein the predefined value A is less than M-2.

[0187] For example, the first information occupies the 2nd to A+1th OFDM symbols in the first time slot of N1 time slots in the time domain. In the first resource pool, A is a predefined value, A = 2 or 3. A is the number of OFDM symbols occupied by the first information. The frequency domain resources of the 2nd to A+1th OFDM symbols in the first time slot of N1 time slots that are not occupied by the first information, the A+2nd to M-1th OFDM symbols in the first time slot of N1 time slots, and the other time slots in N2 time slots except the first time slot are used by A-IoT communication (i.e., the first resources) for R2D or D2R transmission. M is the total number of OFDM symbols contained in a time slot.

[0188] For example, the first information occupies the second to the (M-1)th OFDM symbols in the first time slot of the N1 time slots. M is the total number of OFDM symbols contained in a time slot. The frequency domain resources on the second to the (M-1)th OFDM symbols in the first time slot of the N1 time slots that are not occupied by the first information, as well as the other time slots in the N1 time slots except for the first time slot, are used by A-IoT communication (i.e., the first resources) for R2D or D2R transmission.

[0189] In another implementation, when a first information indicates that a first device has reserved at least one first resource, the second resource reserved by the first information and the first first resource indicated by the first information occupy N2 consecutive time slots in the time domain; N2 is an integer greater than or equal to 1.

[0190] The second resource occupancy refers to part or all of the frequency domain resources of the K2 OFDM symbols in the first time slot of the N2 time slots, where K2 is an integer greater than or equal to 2;

[0191] The first resource indicated by the first information includes: resources in the N2 time slots other than the second resource, the OFDM symbols occupied by AGC, and the OFDM symbols occupied by GP.

[0192] Where K2 can take any of the following values:

[0193] M-2, where M is the number of OFDM symbols contained in a time slot;

[0194] A predefined value B, wherein the predefined value B is less than M-2.

[0195] For example, the first information occupies the 2nd to K2+1th OFDM symbols in the first time slot of the N2 time slots in the time domain. In the first resource pool, K2 is a predefined value, K2 = 2 or 3. The frequency domain resources not occupied by the first information in the 2nd to K2+1th OFDM symbols of the first time slot of the N2 time slots containing the first information, the K2+2th to M-1th OFDM symbols of the first time slot of the N2 time slots containing the first information, and the other time slots in the N2 time slots containing the first information except for the first time slot are used by A-IoT communication (i.e., the first resources) for R2D or D2R transmission. M is the total number of OFDM symbols contained in a time slot. Other first resources that are not contiguous with the second resources in the time domain are used by A-IoT communication (i.e., the first resources) for R2D or D2R transmission.

[0196] As an optional embodiment, step 101 includes:

[0197] The first device sends first information to the second device once within a resource perception window; wherein, the resource perception window is the time window corresponding to the time required for the first device to perform one resource perception.

[0198] Optionally, the duration of the resource awareness window is 100ms or 1100ms.

[0199] In one implementation, the first device sends a first message to the second device once within a resource awareness window. The first message is used to indicate multiple first resources that the first device plans to reserve.

[0200] In summary, in this embodiment, the first device sends first information to the second device, indicating to the second device through the first information that the first device has reserved at least one first resource; the first terminal uses the first resource to conduct A-IoT communication with the A-IoT device. Using this method, in scenarios outside base station coverage, the second device can obtain the first resource reserved by the first device based on the first information, thereby avoiding resource collisions when the second device selects A-IoT resources, and enabling communication between the A-IoT device and the first device in scenarios outside base station coverage.

[0201] like Figure 2 As shown in the embodiments of this application, a method for indicating A-IoT resources is also provided, the method comprising:

[0202] Step 201: The second device receives first information sent by the first device, the first information being used to indicate at least one first resource reserved by the first device, the first resource being used for A-IoT communication;

[0203] Wherein, the first device is a first terminal, and the second device is a second terminal;

[0204] Alternatively, the first device may be a first A-IoT device, and the second device may be a second A-IoT device.

[0205] Optionally, A-IoT communication includes at least one of R2D (Reader to Device) transmission and D2R (Device to Reader) transmission.

[0206] Optionally, the second device that receives the first information can determine at least one first resource reserved by the first device. When the second device selects A-IoT resources, it avoids selecting the first resource reserved by the first device, thereby avoiding resource collision and ensuring communication between the first device and the A-IoT device.

[0207] Optionally, if the first device is a first terminal and the second device is a second terminal, the first information is Sidelink Control Information (SCI).

[0208] In one implementation, the first information may also be referred to as the first A-IoT transmission resource occupancy information. This first A-IoT transmission resource occupancy information may be physical layer control information, or a MAC (Media Access Control) message, or an RRC (Radio Resource Control) message; no specific limitation is made here.

[0209] Optionally, the SCI used to indicate at least one first resource occupies 12 available OFDM (Orthogonal Frequency Division Multiplexing) symbols in a time slot.

[0210] In at least one embodiment of this application, the first information includes at least one of the following:

[0211] First indication information, wherein the first indication information is used to indicate the time domain information of the first resource;

[0212] The second indication information is used to indicate the frequency domain information of the first resource;

[0213] Resource cycle information, which is used to indicate the cycle value of the first resource; if the value of the resource cycle information is 0, it indicates that the first resource is non-periodic, or it can also be called a one-time use resource;

[0214] Priority information, which indicates the priority value of the first resource.

[0215] For example, the time-domain information of the first resource includes at least one TTI (Transmission Time Interval), which is a time-domain resource allocation unit.

[0216] Optionally, the transmission time interval (TTI) includes at least one of the following: a time slot, a mini time slot, and N OFDM symbols; where N is a positive integer.

[0217] For example, the frequency domain information of the first resource includes at least one sub-channel or at least one resource block.

[0218] As an optional embodiment, the first resource occupies one or more consecutive transmission time intervals in the time domain.

[0219] As another alternative embodiment, the first resource occupies one or more consecutive sub-channels in the frequency domain.

[0220] In at least one embodiment of this application, when the first information indicates two or more first resources, the two or more first resources occupy the same number of sub-channels in the frequency domain.

[0221] As an optional embodiment, the first resource occupies at least one time slot; in each time slot, Automatic Gain Control (AGC) and Guard Period (GP) each occupy one OFDM symbol.

[0222] In at least one embodiment of this application, the first resource is a resource in a first resource pool; wherein, the resources in the first resource pool are used for communication between the terminal and the A-IoT device, or for the transmission of A-IoT-related information between terminals.

[0223] Optionally, the first resource pool includes at least one sub-channel in the frequency domain, each sub-channel occupying a contiguous resource block; and / or, the first resource pool includes at least one resource period. That is, the first resource pool is pre-configured with at least one resource period. This resource period can be determined based on the TTI (Time Interval), for example, the value of the resource period is a multiple of the TTI value.

[0224] For example, the number of PRBs (Physical Resource Blocks) occupied by each sub-channel can be any one of {1,2,3,4,5,6,7,8}.

[0225] In at least one embodiment of this application, the first resource pool includes: a resource pool for reader-to-device R2D transmission, and / or a resource pool for device-to-reader D2R transmission.

[0226] Optionally, the first resource pool is a pre-configured resource pool. In this embodiment, a single overall first resource pool can be pre-configured, where resources for R2D transmission and resources for D2R transmission are both located within this overall first resource pool. Alternatively, two different resource pools can be pre-configured. For example, there could be a first resource pool No. 1 and a first resource pool No. 2, where resources for R2D transmission are located in first resource pool No. 1, and resources for D2R transmission are located in first resource pool No. 2.

[0227] In at least one embodiment of this application, the method further includes:

[0228] The second device receives a third message sent by the first device, the third message being used to instruct the first device to release the first resource that it has reserved. Optionally, the third message is an SCI (Search Engine Component).

[0229] Optionally, after receiving the third information about releasing the reserved first resource, the second device considers that the first resource is not occupied when selecting A-IoT resources, that is, the released first resource can be selected as the A-IoT resource for use by the second device.

[0230] As an optional embodiment, the first information indicates the method by which the first device reserves at least one first resource:

[0231] Multiple first information items respectively indicate at least one first resource reserved by the first device;

[0232] or,

[0233] A first message indicates that the first device has reserved at least one first resource.

[0234] In one implementation, when multiple first information items respectively indicate at least one first resource reserved by the first device, the second resource occupied by the first information and the first resource indicated by the first information occupy N1 consecutive time slots in the time domain; N1 is an integer greater than or equal to 1.

[0235] The second resource occupancy refers to part or all of the frequency domain resources of the K1 OFDM symbols in the first time slot of the N1 time slots, where K1 is an integer greater than or equal to 2;

[0236] The first resource indicated by the first information includes: resources in the N1 time slots other than the second resource, the OFDM symbols occupied by AGC, and the OFDM symbols occupied by GP.

[0237] Where K1 can take any of the following values:

[0238] M-2, where M is the number of OFDM symbols contained in a time slot;

[0239] A predefined value A, wherein the predefined value A is less than M-2.

[0240] For example, the first information occupies the 2nd to A+1th OFDM symbols in the first time slot of N1 time slots in the time domain. In the first resource pool, A is a predefined value, A = 2 or 3. A is the number of OFDM symbols occupied by the first information. The frequency domain resources of the 2nd to A+1th OFDM symbols in the first time slot of N1 time slots that are not occupied by the first information, the A+2nd to M-1th OFDM symbols in the first time slot of N1 time slots, and the other time slots in N2 time slots except the first time slot are used by A-IoT communication (i.e., the first resources) for R2D or D2R transmission. M is the total number of OFDM symbols contained in a time slot.

[0241] For example, the first information occupies the second to the (M-1)th OFDM symbols in the first time slot of the N1 time slots. M is the total number of OFDM symbols contained in a time slot. The frequency domain resources on the second to the (M-1)th OFDM symbols in the first time slot of the N1 time slots that are not occupied by the first information, as well as the other time slots in the N1 time slots except for the first time slot, are used by A-IoT communication (i.e., the first resources) for R2D or D2R transmission.

[0242] In another implementation, when a first information indicates that a first device has reserved at least one first resource, the second resource reserved by the first information and the first first resource indicated by the first information occupy N2 consecutive time slots in the time domain; N2 is an integer greater than or equal to 1.

[0243] The second resource occupancy refers to part or all of the frequency domain resources of the K2 OFDM symbols in the first time slot of the N2 time slots, where K2 is an integer greater than or equal to 2;

[0244] The first resource indicated by the first information includes: resources in the N2 time slots other than the second resource, the OFDM symbols occupied by AGC, and the OFDM symbols occupied by GP.

[0245] Where K2 can take any of the following values:

[0246] M-2, where M is the number of OFDM symbols contained in a time slot;

[0247] A predefined value B, wherein the predefined value B is less than M-2.

[0248] For example, the first information occupies the 2nd to K2+1th OFDM symbols in the first time slot of the N2 time slots in the time domain. In the first resource pool, K2 is a predefined value, K2 = 2 or 3. The frequency domain resources not occupied by the first information in the 2nd to K2+1th OFDM symbols of the first time slot of the N2 time slots containing the first information, the K2+2th to M-1th OFDM symbols of the first time slot of the N2 time slots containing the first information, and the other time slots in the N2 time slots containing the first information except for the first time slot are used by A-IoT communication (i.e., the first resources) for R2D or D2R transmission. M is the total number of OFDM symbols contained in a time slot. Other first resources that are not contiguous with the second resources in the time domain are used by A-IoT communication (i.e., the first resources) for R2D or D2R transmission.

[0249] As an optional embodiment, step 201 includes:

[0250] The second device receives the first information once within a resource perception window of the first device, wherein the resource perception window is the time window corresponding to the time required for the first device to perform one resource perception.

[0251] Optionally, the duration of the resource awareness window is 100ms or 1100ms.

[0252] In one implementation, the first device sends a first message to the second device once within a resource awareness window. The first message is used to indicate multiple first resources that the first device plans to reserve.

[0253] In summary, in this embodiment, the first device sends first information to the second device, indicating to the second device through the first information that the first device has reserved at least one first resource; the first terminal uses the first resource to conduct A-IoT communication with the A-IoT device. Using this method, in scenarios outside base station coverage, the second device can obtain the first resource reserved by the first device based on the first information, thereby avoiding resource collisions when the second device selects A-IoT resources, and enabling communication between the A-IoT device and the first device in scenarios outside base station coverage.

[0254] To more clearly describe the A-IoT resource indication method provided in the embodiments of this application, several examples are given below.

[0255] Example 1

[0256] The first terminal sends a first SCI to the second terminal, indicating to the second terminal that the first terminal has reserved a first resource for A-IoT communication. The first SCI carries at least one of the following information: time resource allocation information, frequency resource allocation information, resource reservation period, priority, etc. The first terminal uses the first resource to communicate with the A-IoT device.

[0257] Before communicating with A-IoT devices, the first terminal first performs resource awareness. This involves receiving the first SCI (Service Message Interface) sent by other terminals within a resource awareness window, confirming the set of time-frequency resources not occupied by other terminals, and then determining the first resource to be used for A-IoT communication (including inventory, commands, sensing, and positioning). The first terminal then uses the first SCI to indicate the first resource to other terminals so that other terminals can avoid using the first resource when selecting resources.

[0258] Optionally, the terminal divides the first resource into a time-frequency resource set C for R2D communication and a time-frequency resource set D for D2R communication. The terminal uses time-frequency resource set C to send paging and msg2. The terminal indicates time-frequency resource set D to the device via paging or msg2, and the device uses time-frequency resource set D to send msg1 and msg3.

[0259] The Paging command carries the TRA, FRA, and resource reservation period values ​​of the time-frequency resource set D.

[0260] The Paging command also carries R2D or D2R transmission parameter information, including modulation and coding scheme, bit rate, etc.

[0261] Optionally, the first terminal sends an A-IoT transmission resource early release signaling message to other terminals, instructing them to release the A-IoT transmission resources currently being occupied.

[0262] like Figure 3 As shown, before communicating with the A-IoT device, the first terminal first receives a first SCI sent by other terminals, finds a first resource that is not occupied by other terminals, and uses the first resource to perform R2D or D2R transmission with the A-IoT device. Furthermore, the first terminal also uses the first SCI to indicate the first resource to other terminals so that other terminals can avoid using the first resource when selecting resources.

[0263] Using the above-mentioned method for A-IoT resource allocation in scenarios outside base station coverage, the first terminal can select time-frequency resources for R2D or D2R transmission by receiving the first SCI sent by other terminals. It will also send the first SCI to other terminals to notify the first terminal of the resources it uses. This avoids the resource collision problem in scenarios outside coverage, enabling A-IoT devices and readers to communicate in scenarios outside coverage.

[0264] Example 2

[0265] The first terminal sends a first SCI to the second terminal, indicating to the second terminal via the first SCI that the first terminal has reserved a first resource for A-IoT communication. A-IoT communication includes at least one of R2D transmission and D2R transmission. The first SCI carries at least one of the following information:

[0266] Time resource allocation information: indicates the time domain resources occupied by the first resource reserved by the first terminal, including at least one TTI. TTI is the time domain resource allocation unit, which may be a time slot, mini time slot, OFDM symbol, etc.

[0267] Frequency resource allocation information: indicates the frequency domain resources occupied by the first resource reserved by the first terminal, including at least one sub-channel or at least one resource block.

[0268] Resource Cycle Information: Indicates the cycle value of the first resource reserved by the first terminal. If the value of this field is 0, it means that the reserved first resource is non-periodic (one-time use).

[0269] Priority information: Indicates the priority value of the first resource currently reserved.

[0270] The first resource is the time-frequency resource in the first resource pool. The first resource pool is used only for communication between the terminal and A-IoT, or for the transmission of A-IoT-related information between terminals.

[0271] The first resource pool contains at least one sub-channel, each occupying a contiguous resource block. The first resource pool is pre-configured with at least one resource reservation period. The number of PRBs occupied by each sub-channel is {1,2,3,4,5,6,7,8}; the unit of TTI is: time slot, mini-time slot, or OFDM symbol. The resource period is determined based on the TTI, and may be a multiple of the TTI.

[0272] Optionally, at least two different first resource pools are pre-configured, for example: first resource pool 1 and first resource pool 2. R2D transmission resources are in first resource pool 1, and D2R transmission resources are in first resource pool 2.

[0273] like Figure 4 As shown, the first resource pool contains 4 sub-channels, each occupying 6 PRBs. One TTI is one time slot. Terminal 1 sends the first SCI in time slot 2 of sub-channel 1, indicating that terminal 1 has occupied time slot 6 of sub-channel 4, and the resource reservation period is 2 time slots. Terminal 2 sends the first SCI in time slot 7 of sub-channel 2, indicating that terminal 2 has occupied time slots 11 and 12 of sub-channels 1 and 2, and the resource reservation period is 3 time slots.

[0274] like Figure 5 As shown, two different first resource pools are pre-configured: First Resource Pool 1 (containing sub-channels 1 and 2) and First Resource Pool 2 (containing sub-channels 3 and 4). Terminal 1 sends a first SCI, which indicates that the R2D transmission resources with a resource reservation period of 3 time slots are all in First Resource Pool 1, and the D2R transmission resources with a resource reservation period of 4 time slots are all in First Resource Pool 2.

[0275] By carrying A-IoT resource allocation information in the SCI, in scenarios outside base station coverage, the first terminal can select time-frequency resources for R2D or D2R transmission by receiving the first SCI sent by other terminals. It will also send the first SCI to other terminals to notify the first terminal of the resources it uses. This avoids the resource collision problem in scenarios outside coverage, enabling A-IoT devices and readers to communicate in scenarios outside coverage.

[0276] Example 3

[0277] The first terminal sends a first SCI to the second terminal, indicating to the second terminal via the first SCI that the first terminal has reserved a first resource for A-IoT communication. A-IoT communication includes at least one of R2D transmission and D2R transmission.

[0278] The first terminal reserves resources for A-IoT communication, including at least one first resource. This first resource occupies one or more consecutive TTIs in the time domain and one or more consecutive sub-channels in the frequency domain. To reduce signaling overhead, multiple second resources occupy the same number of sub-channels in the frequency domain, eliminating the need for separate notifications for each first resource's occupied sub-channels. In each time slot of the first resource, AGC and GP each occupy one OFDM symbol. The purpose of AGC is to facilitate automatic gain control when the terminal receives first resources from other terminals, ensuring normal reception. The purpose of GP is a protection interval to prevent signal overlap between the current time slot and the next time slot.

[0279] like Figure 6 As shown, terminal 1 sends the first SCI to indicate the first resource, which are respectively Figure 6 The first resources are shown as #1, #2, and #3. Each first resource is continuous in both the time and frequency domains, and each of these three first resources occupies two sub-channels.

[0280] Using the above-mentioned method for A-IoT resource allocation in scenarios outside base station coverage, the first terminal can send a first SCI to other terminals to notify the first terminal of the first resource to be used. This resource can be included in multiple first resources that are not continuous in the time domain or frequency domain. This increases the flexibility of A-IoT resource selection, which is conducive to better use of time and frequency resources. At the same time, it avoids the resource collision problem in scenarios outside coverage, enabling A-IoT devices and readers to communicate in scenarios outside coverage.

[0281] Example 4

[0282] The first terminal sends a first SCI to the second terminal, indicating to the second terminal that the first terminal has reserved a first resource for A-IoT communication. The first terminal uses the first resource to communicate with the A-IoT device. Furthermore, the first terminal sends multiple first SCIs, each indicating a first resource. In this way, other terminals can obtain information about the time-frequency resources occupied by the first terminal by receiving any one of the first resources.

[0283] The second resource occupied by the first SCI and the first resource indicated by the first SCI occupy N1 consecutive time slots in the time domain;

[0284] The first SCI occupies the 2nd to A+1th OFDM symbols in the first time slot of N1 time slots in the time domain. In the first resource pool, A is a predefined value, A = 2 or 3. A is the number of OFDM symbols occupied by the first SCI. The frequency domain resources of the 2nd to A+1th OFDM symbols in the first time slot of N1 time slots that are not occupied by the first SCI, the A+2nd to M-1th OFDM symbols in the first time slot of N1 time slots, and the other time slots in N2 time slots except the first time slot are used by A-IoT communication (i.e., the first resource) for R2D or D2R transmission. M is the total number of OFDM symbols contained in a time slot.

[0285] like Figure 7 As shown, assuming SCS = 15 kHz, each time slot contains 14 OFDM symbols. The first SCI occupies the 2nd to 4th OFDM symbols, that is, 3 OFDM symbols. The first OFDM symbol of each time slot is used to transmit AGC, and the last symbol of each time slot is used to transmit GP.

[0286] like Figure 8 As shown, Terminal 1 transmits the first SCI in time slot 2. Terminal 1 indicates three first resources through the first SCI. The second resource occupied by the first SCI and the first resource indicated by the first SCI occupy two consecutive time slots in the time domain. These are the three target resources located in time slots 2 and 3, 6 and 7, and 9 and 10, occupying two sub-channels and two time slots respectively. The frequency domain resources of the 2nd to 4th OFDM symbols of the first time slot of each target resource that are not occupied by the first SCI, the remaining 9 symbols of the first time slot, and the second time slot of the target resource can be used by A-IoT communication for R2D or D2R transmission.

[0287] Using the above-described method for A-IoT resource allocation in scenarios outside base station coverage, the first terminal can send a first SCI to other terminals to notify the first terminal of the first resources it uses, including multiple first resources that are discontinuous in the time or frequency domain. Each first resource contains a first SCI. In this way, other terminals can obtain the resource occupancy information of the first terminal by detecting any one of the first resources, which helps to avoid resource collision problems in scenarios outside coverage and enables A-IoT devices and readers to communicate in scenarios outside coverage.

[0288] Example 5

[0289] The first terminal sends a first SCI to the second terminal, indicating to the second terminal that the first terminal has reserved a first resource for A-IoT communication. The first terminal uses the first resource to communicate with the A-IoT device. Furthermore, the first terminal sends multiple first SCIs, each indicating a first resource. In this way, other terminals can obtain information about the time-frequency resources occupied by the first terminal by receiving any one of the first resources.

[0290] The second resource occupied by the first SCI and the first resource indicated by the first SCI occupy N1 consecutive time slots in the time domain;

[0291] The first SCI occupies the second to the (M-1)th OFDM symbols in the first time slot of the N1 time slots. M is the total number of OFDM symbols contained in a time slot. The frequency domain resources on the second to the (M-1)th OFDM symbols in the first time slot of the N1 time slots that are not occupied by the first SCI, as well as the other time slots in the N1 time slots except for the first time slot, are used by A-IoT communication (i.e., the first resources) for R2D or D2R transmission.

[0292] like Figure 9 As shown, assuming SCS = 15 kHz, each time slot contains 14 OFDM symbols. The first SCI occupies the 2nd to 13th OFDM symbols, totaling 12 OFDM symbols, but only occupies one PRB in the frequency domain. The first OFDM symbol of each time slot is used to transmit AGC, and the last symbol of each time slot is used to transmit GP.

[0293] like Figure 10 As shown, Terminal 1 transmits the first SCI in time slot 2. Terminal 1 indicates three first resources through the first SCI. The second resource occupied by the first SCI and the first resource indicated by the first SCI occupy two consecutive time slots in the time domain. These are the three target resources located in time slots 2 and 3, 6 and 7, and 9 and 10, occupying two sub-channels and two time slots respectively. The frequency domain resources in the OFDM symbols 2 to 13 of the first time slot of each target resource that are not occupied by the first SCI, as well as the second time slot of the target resource, can be used by A-IoT communication for R2D or D2R transmission.

[0294] Using the above-described method for A-IoT resource allocation in scenarios outside base station coverage, the first terminal can send a first SCI to other terminals to notify the first terminal of the first resources it uses, including multiple first resources that are discontinuous in the time or frequency domain. Each first resource contains a first SCI. In this way, other terminals can obtain the resource occupancy information of the first terminal by detecting any one of the first resources, which helps to avoid resource collision problems in scenarios outside coverage and enables A-IoT devices and readers to communicate in scenarios outside coverage.

[0295] Example 6

[0296] The first terminal sends a first SCI to the second terminal, indicating to the second terminal that the first terminal has reserved a first resource for A-IoT communication. The first SCI carries at least one of the following information: time resource allocation information, frequency resource allocation information, resource reservation period, and priority. The first terminal uses the first resource to communicate with the A-IoT device. Furthermore, the first terminal sends the first SCI only once within the resource awareness window. This avoids sending the first SCI for every first resource, reducing the signaling overhead of the first SCI. Other terminals can only obtain information about the time and frequency resources occupied by the first terminal by receiving information from a specific first resource within a resource awareness window. The duration of the resource awareness window is 100ms or 1100ms.

[0297] The second resource occupied by the first SCI and the first resource indicated by the first SCI occupy N2 consecutive time slots in the time domain;

[0298] The first SCI occupies the 2nd to K2+1th OFDM symbols in the first time slot of the N2 time slots in the time domain. In the first resource pool, K2 is a predefined value, K2 = 2 or 3. The frequency domain resources of the 2nd to K2+1th OFDM symbols in the first time slot of the N2 time slots containing the first SCI that are not occupied by the first information, the K2+2th to M-1th OFDM symbols in the first time slot of the N2 time slots containing the first SCI, and the other time slots in the N2 time slots containing the first information except for the first time slot are used by A-IoT communication (i.e., the first resources) for R2D or D2R transmission. M is the total number of OFDM symbols contained in a time slot. Other first resources that are not contiguous with the second resources in the time domain are used by A-IoT communication (i.e., the first resources) for R2D or D2R transmission.

[0299] like Figure 11As shown, assuming SCS = 15 kHz, each time slot contains 14 OFDM symbols. The first SCI occupies the 2nd to 4th OFDM symbols, that is, 3 OFDM symbols. The first OFDM symbol of each time slot is used to transmit AGC, and the last symbol of each time slot is used to transmit GP.

[0300] like Figure 12 As shown, Terminal 1 transmits the first SCI in time slot 2. Terminal 1 indicates three first resources through the first SCI: three first resources located in time slots 2, 6, and 9, each occupying two sub-channels and one time slot. The frequency domain resources of the 2nd to 4th OFDM symbols in the first time slot containing the first SCI, which are not occupied by the first SCI, and the remaining 9 symbols in the first time slot containing the first SCI, can be used for A-IoT communication, specifically for R2D or D2R transmission. The second first resource located in time slot 6 and the third first resource located in time slot 9, which do not contain the first SCI, can also be used for A-IoT communication.

[0301] Using the above-described method for A-IoT resource allocation in scenarios outside base station coverage, the first terminal can send a first SCI to other terminals to notify the first terminal of the first resource it uses. This first resource can include multiple resources that are discontinuous in the time or frequency domain, and within a resource perception window, only one first resource contains the first SCI, while other first resources do not. This allows other terminals to obtain the first terminal's resource occupancy information by detecting the first resource, and also reduces the signaling overhead of the first SCI, enabling A-IoT devices and readers to communicate in scenarios outside base station coverage.

[0302] like Figure 13 As shown in the illustration, this application also provides a first device, including a memory 1320, a transceiver 1310, and a processor 1300:

[0303] The memory 1320 is used to store computer programs; the transceiver 1310 is used to send and receive data under the control of the processor 1300; the processor 1300 is used to read the computer program in the memory and perform the following operations:

[0304] Send first information to the second device, the first information being used to indicate at least one first resource reserved by the first device, the first resource being used for A-IoT communication;

[0305] Wherein, the first device is a first terminal, and the second device is a second terminal;

[0306] Alternatively, the first device may be a first A-IoT device, and the second device may be a second A-IoT device.

[0307] As an optional embodiment, the first information includes at least one of the following:

[0308] First indication information, wherein the first indication information is used to indicate the time domain information of the first resource;

[0309] The second indication information is used to indicate the frequency domain information of the first resource;

[0310] Resource cycle information, wherein the resource cycle information is used to indicate the cycle value of the first resource;

[0311] Priority information, which indicates the priority value of the first resource.

[0312] As an optional embodiment, the first information is direct link control information.

[0313] As an optional embodiment, the first resource occupies one or more consecutive transmission time intervals in the time domain;

[0314] The first resource occupies one or more consecutive sub-channels in the frequency domain.

[0315] As an optional embodiment, the transmission time interval includes at least one of the following: time slot, mini time slot, N orthogonal frequency division multiplexing (OFDM) symbols, where N is a positive integer.

[0316] As an optional embodiment, if the first information indicates two or more first resources,

[0317] The two or more first resources occupy the same number of sub-channels in the frequency domain.

[0318] As an optional embodiment, the first resource occupies at least one time slot;

[0319] In each time slot, Automatic Gain Control (AGC) and Guard Interval (GP) each occupy one OFDM symbol.

[0320] As an optional embodiment, the first resource is a resource in a first resource pool; wherein, the resources in the first resource pool are used for communication between the terminal and the A-IoT device, or the resources in the first resource pool are used for the transmission of A-IoT-related information between terminals.

[0321] As an optional embodiment, the first resource pool includes at least one sub-channel in the frequency domain, and each sub-channel occupies a contiguous resource block;

[0322] And / or,

[0323] The first resource pool includes at least one resource cycle.

[0324] As an optional embodiment, the first resource pool includes: a resource pool for reader-to-device R2D transmission, and / or a resource pool for device-to-reader D2R transmission.

[0325] As an optional embodiment, the method further includes:

[0326] Receive second information sent by at least one third device, the second information being used to indicate that the third device has reserved resources for A-IoT communication;

[0327] A second resource pool is determined based on the second information; the resources in the second resource pool have not been reserved by the third device.

[0328] Based on the second resource pool, at least one first resource reserved for the first device is determined.

[0329] As an optional embodiment, the processor is also configured to read a computer program from the memory and perform the following operations:

[0330] Within a resource sensing window, the first device receives second information sent by at least one third device; wherein the resource sensing window is a time window corresponding to the time required for the first device to perform one resource sensing operation.

[0331] As an optional embodiment, the processor is also configured to read a computer program from the memory and perform the following operations:

[0332] The first resource occupied by the reservation is divided into a first resource set for R2D transmission and a second resource set for D2R transmission.

[0333] Use the first resource set to send a paging message for A-IoT communication or a random access message for A-IoT communication 2;

[0334] The paging message or random access message 2 used for A-IoT communication carries information about the second resource set.

[0335] As an optional embodiment, the paging message for A-IoT communication also carries R2D transmission parameter information and / or D2R transmission parameter information.

[0336] As an optional embodiment, the processor is also configured to read a computer program from the memory and perform the following operations:

[0337] Send a third message to the second device, the third message being used to instruct the first device to release the first resource that was reserved.

[0338] As an optional embodiment, the second resource occupied by the first information and the first resource indicated by the first information occupy N1 consecutive time slots in the time domain; N1 is an integer greater than or equal to 1;

[0339] The second resource occupancy refers to part or all of the frequency domain resources of the K1 OFDM symbols in the first time slot of the N1 time slots, where K1 is an integer greater than or equal to 2;

[0340] The first resource indicated by the first information includes: resources in the N1 time slots other than the second resource, the OFDM symbols occupied by AGC, and the OFDM symbols occupied by GP.

[0341] As an optional embodiment, the second resource occupied by the first information and the first resource indicated by the first information occupy N2 consecutive time slots in the time domain; N2 is an integer greater than or equal to 1;

[0342] The second resource occupancy refers to part or all of the frequency domain resources of the K2 OFDM symbols in the first time slot of the N2 time slots, where K2 is an integer greater than or equal to 2;

[0343] The first resource indicated by the first information includes: resources in the N2 time slots other than the second resource, the OFDM symbols occupied by AGC, and the OFDM symbols occupied by GP.

[0344] As an optional embodiment, the processor is also configured to read a computer program from the memory and perform the following operations:

[0345] The first information is sent to the second device once within a resource perception window; wherein, the resource perception window is the time window corresponding to the time required for the first device to perform one resource perception.

[0346] As an optional embodiment, K1 and / or K2 may take any of the following values:

[0347] M-2, where M is the number of OFDM symbols contained in a time slot;

[0348] A predefined value, wherein the predefined value is less than M-2.

[0349] Among them, Figure 13In this context, the bus architecture can include any number of interconnected buses and bridges, specifically linking various circuits of one or more processors represented by processor 1300 and memory represented by memory 1320 together. The bus architecture can also link various other circuits such as peripheral devices, voltage regulators, and power management circuits, which are well known in the art and therefore will not be described further herein. The bus interface provides an interface. The transceiver 1310 can be multiple components, including transmitters and receivers, providing a unit for communicating with various other devices over a transmission medium, including wireless channels, wired channels, optical fibers, etc. For different user equipment, the user interface 1330 can also be an interface capable of connecting external or internal devices, including but not limited to keypads, displays, speakers, microphones, joysticks, etc.

[0350] The processor 1300 is responsible for managing the bus architecture and general processing, while the memory 1320 can store the data used by the processor 1300 when performing operations.

[0351] Optionally, the processor 1300 can be a CPU (Central Processing Unit), ASIC (Application Specific Integrated Circuit), FPGA (Field-Programmable Gate Array), or CPLD (Complex Programmable Logic Device), and the processor can also adopt a multi-core architecture.

[0352] The processor executes any of the methods described in the embodiments of this application according to the obtained executable instructions by calling a computer program stored in memory. The processor and memory may also be physically separated.

[0353] In this embodiment, a first terminal sends first information to a second terminal, instructing the second terminal to reserve first resources for A-IoT communication. The first terminal uses the first resources to conduct A-IoT communication with the A-IoT device. Using this method, in scenarios outside base station coverage, the first terminal can obtain time-frequency resources for R2D or D2R transmission, avoiding resource collision problems in scenarios outside coverage, and enabling communication between the A-IoT device and the reader in scenarios outside coverage.

[0354] It should be noted that the first device provided in this application embodiment can implement all the method steps implemented in the above method embodiment and can achieve the same technical effect. Here, the parts that are the same as those in the method embodiment and the beneficial effects will not be described in detail.

[0355] like Figure 14 As shown in the illustration, this application also provides a second device, including a memory 1420, a transceiver 1410, and a processor 1400.

[0356] The memory 1420 is used to store computer programs; the transceiver 1410 is used to send and receive data under the control of the processor 1400; the processor 1400 is used to read the computer program in the memory 1420 and perform the following operations:

[0357] Receive first information sent by a first device, the first information being used to indicate at least one first resource reserved by the first device, the first resource being used for A-IoT communication;

[0358] Wherein, the first device is a first terminal, and the second device is a second terminal;

[0359] Alternatively, the first device may be a first A-IoT device, and the second device may be a second A-IoT device.

[0360] As an optional embodiment, the first information includes at least one of the following:

[0361] First indication information, wherein the first indication information is used to indicate the time domain information of the first resource;

[0362] The second indication information is used to indicate the frequency domain information of the first resource;

[0363] Resource cycle information, wherein the resource cycle information is used to indicate the cycle value of the first resource;

[0364] Priority information, which indicates the priority value of the first resource.

[0365] As an optional embodiment, the first information is direct link control information.

[0366] As an optional embodiment, the first resource occupies one or more consecutive transmission time intervals in the time domain;

[0367] The first resource occupies one or more consecutive sub-channels in the frequency domain.

[0368] As an optional embodiment, the transmission time interval includes at least one of the following: time slot, mini time slot, N orthogonal frequency division multiplexing (OFDM) symbols, where N is a positive integer.

[0369] As an optional embodiment, if the first information indicates two or more first resources,

[0370] The two or more first resources occupy the same number of sub-channels in the frequency domain.

[0371] As an optional embodiment, the first resource occupies at least one time slot;

[0372] In each time slot, Automatic Gain Control (AGC) and Guard Interval (GP) each occupy one OFDM symbol.

[0373] As an optional embodiment, the first resource is a resource in a first resource pool; wherein, the resources in the first resource pool are used for communication between the terminal and the A-IoT device, or the resources in the first resource pool are used for the transmission of A-IoT-related information between terminals.

[0374] As an optional embodiment, the first resource pool includes at least one sub-channel in the frequency domain, and each sub-channel occupies a contiguous resource block;

[0375] And / or,

[0376] The first resource pool includes at least one resource cycle.

[0377] As an optional embodiment, the first resource pool includes: a resource pool for reader-to-device R2D transmission, and / or a resource pool for device-to-reader D2R transmission.

[0378] As an optional embodiment, the processor is also configured to read a computer program from the memory and perform the following operations:

[0379] The second device receives a third message sent by the first device, the third message being used to instruct the first device to release the first resource that was reserved.

[0380] As an optional embodiment, the second resource occupied by the first information and the first resource indicated by the first information occupy N1 consecutive time slots in the time domain; N1 is an integer greater than or equal to 1;

[0381] The second resource occupancy refers to part or all of the frequency domain resources of the K1 OFDM symbols in the first time slot of the N1 time slots, where K1 is an integer greater than or equal to 2;

[0382] The first resource indicated by the first information includes: resources in the N1 time slots other than the second resource, the OFDM symbols occupied by AGC, and the OFDM symbols occupied by GP.

[0383] As an optional embodiment, the second resource occupied by the first information and the first resource indicated by the first information occupy N2 consecutive time slots in the time domain; N2 is an integer greater than or equal to 1;

[0384] The second resource occupancy refers to part or all of the frequency domain resources of the K2 OFDM symbols in the first time slot of the N2 time slots, where K2 is an integer greater than or equal to 2;

[0385] The first resource indicated by the first information includes: resources in the N2 time slots other than the second resource, the OFDM symbols occupied by AGC, and the OFDM symbols occupied by GP.

[0386] As an optional embodiment, the processor is also configured to read a computer program from the memory and perform the following operations:

[0387] The second device receives the first information once within a resource perception window of the first device, wherein the resource perception window is the time window corresponding to the time required for the first device to perform one resource perception.

[0388] As an optional embodiment, K1 and / or K2 may take any of the following values:

[0389] M-2, where M is the number of OFDM symbols contained in a time slot;

[0390] A predefined value, wherein the predefined value is less than M-2.

[0391] Among them, Figure 14 In this context, the bus architecture can include any number of interconnected buses and bridges, specifically linking various circuits of one or more processors represented by processor 1400 and memory represented by memory 1420 together. The bus architecture can also link various other circuits such as peripheral devices, voltage regulators, and power management circuits, which are well known in the art and therefore will not be described further herein. The bus interface provides an interface. The transceiver 1410 can be multiple components, including transmitters and receivers, providing a unit for communicating with various other devices over a transmission medium, including wireless channels, wired channels, optical fibers, etc. For different user equipment, the user interface 1430 can also be an interface capable of connecting external or internal devices, including but not limited to keypads, displays, speakers, microphones, joysticks, etc.

[0392] The processor 1400 is responsible for managing the bus architecture and general processing, while the memory 1420 can store the data used by the processor 1400 when performing operations.

[0393] Optionally, the processor 1400 can be a CPU (Central Processing Unit), ASIC (Application Specific Integrated Circuit), FPGA (Field-Programmable Gate Array), or CPLD (Complex Programmable Logic Device), and the processor can also adopt a multi-core architecture.

[0394] The processor executes any of the methods described in the embodiments of this application according to the obtained executable instructions by calling a computer program stored in memory. The processor and memory may also be physically separated.

[0395] In this embodiment, a first terminal sends first information to a second terminal, instructing the second terminal to reserve first resources for A-IoT communication. The first terminal uses the first resources to conduct A-IoT communication with the A-IoT device. Using this method, in scenarios outside base station coverage, the first terminal can obtain time-frequency resources for R2D or D2R transmission, avoiding resource collision problems in scenarios outside coverage, and enabling communication between the A-IoT device and the reader in scenarios outside coverage.

[0396] It should be noted that the second device provided in this application embodiment can implement all the method steps implemented in the above method embodiment and can achieve the same technical effect. Here, the parts that are the same as those in the method embodiment and the beneficial effects will not be described in detail.

[0397] like Figure 15 As shown in the illustration, this application also provides an A-IoT resource indication device, applied to a first device, the device comprising:

[0398] The sending unit 1501 is used to send first information to the second device, the first information being used to indicate at least one first resource reserved by the first device, the first resource being used for A-IoT communication;

[0399] Wherein, the first device is a first terminal, and the second device is a second terminal;

[0400] Alternatively, the first device may be a first A-IoT device, and the second device may be a second A-IoT device.

[0401] As an optional embodiment, the first information includes at least one of the following:

[0402] First indication information, wherein the first indication information is used to indicate the time domain information of the first resource;

[0403] The second indication information is used to indicate the frequency domain information of the first resource;

[0404] Resource cycle information, wherein the resource cycle information is used to indicate the cycle value of the first resource;

[0405] Priority information, which indicates the priority value of the first resource.

[0406] As an optional embodiment, the first information is direct link control information.

[0407] As an optional embodiment, the first resource occupies one or more consecutive transmission time intervals in the time domain;

[0408] The first resource occupies one or more consecutive sub-channels in the frequency domain.

[0409] As an optional embodiment, the transmission time interval includes at least one of the following: time slot, mini time slot, N orthogonal frequency division multiplexing (OFDM) symbols, where N is a positive integer.

[0410] As an optional embodiment, if the first information indicates two or more first resources,

[0411] The two or more first resources occupy the same number of sub-channels in the frequency domain.

[0412] As an optional embodiment, the first resource occupies at least one time slot;

[0413] In each time slot, Automatic Gain Control (AGC) and Guard Interval (GP) each occupy one OFDM symbol.

[0414] As an optional embodiment, the first resource is a resource in a first resource pool; wherein, the resources in the first resource pool are used for communication between the terminal and the A-IoT device, or the resources in the first resource pool are used for the transmission of A-IoT-related information between terminals.

[0415] As an optional embodiment, the first resource pool includes at least one sub-channel in the frequency domain, and each sub-channel occupies a contiguous resource block;

[0416] And / or,

[0417] The first resource pool includes at least one resource cycle.

[0418] As an optional embodiment, the first resource pool includes: a resource pool for reader-to-device R2D transmission, and / or a resource pool for device-to-reader D2R transmission.

[0419] As an optional embodiment, the apparatus further includes:

[0420] A first receiving unit is configured to receive second information sent by at least one third device, the second information being used to indicate the resources reserved by the third device for A-IoT communication;

[0421] The first determining unit is configured to determine the second resource pool based on the second information; the resources in the second resource pool have not been reserved by the third device.

[0422] The second determining unit is configured to determine, based on the second resource pool, at least one first resource reserved by the first device.

[0423] As an optional embodiment, the first receiving unit is further configured to:

[0424] Within a resource sensing window, the first device receives second information sent by at least one third device; wherein the resource sensing window is a time window corresponding to the time required for the first device to perform one resource sensing operation.

[0425] As an optional embodiment, the apparatus further includes:

[0426] A partitioning unit is used to divide the at least one first resource occupied by the reservation into a first resource set for R2D transmission and a second resource set for D2R transmission.

[0427] The first sending unit is used to send a paging message for A-IoT communication or a random access message 2 for A-IoT communication using a first resource set;

[0428] The paging message or random access message 2 used for A-IoT communication carries information about the second resource set.

[0429] As an optional embodiment, the paging message for A-IoT communication also carries R2D transmission parameter information and / or D2R transmission parameter information.

[0430] As an optional embodiment, the apparatus further includes:

[0431] The second sending unit is used to send third information to the second device, the third information being used to instruct the first device to release the first resource that was reserved.

[0432] As an optional embodiment, the second resource occupied by the first information and the first resource indicated by the first information occupy N1 consecutive time slots in the time domain; N1 is an integer greater than or equal to 1;

[0433] The second resource occupancy refers to part or all of the frequency domain resources of the K1 OFDM symbols in the first time slot of the N1 time slots, where K1 is an integer greater than or equal to 2;

[0434] The first resource indicated by the first information includes: resources in the N1 time slots other than the second resource, the OFDM symbols occupied by AGC, and the OFDM symbols occupied by GP.

[0435] As an optional embodiment, the second resource occupied by the first information and the first resource indicated by the first information occupy N2 consecutive time slots in the time domain; N2 is an integer greater than or equal to 1;

[0436] The second resource occupancy refers to part or all of the frequency domain resources of the K2 OFDM symbols in the first time slot of the N2 time slots, where K2 is an integer greater than or equal to 2;

[0437] The first resource indicated by the first information includes: resources in the N2 time slots other than the second resource, the OFDM symbols occupied by AGC, and the OFDM symbols occupied by GP.

[0438] As an optional embodiment, the transmitting unit includes:

[0439] The sending subunit is used to send first information to the second device once within a resource perception window; wherein, the resource perception window is the time window corresponding to the time required for the first device to perform one resource perception.

[0440] As an optional embodiment, K1 and / or K2 may take any of the following values:

[0441] M-2, where M is the number of OFDM symbols contained in a time slot;

[0442] A predefined value, wherein the predefined value is less than M-2.

[0443] In the A-IoT transmission resource indication device for scenarios outside base station coverage in this application embodiment, a first terminal sends first information to a second terminal, indicating to the second terminal through the first information that the first terminal has reserved first resources for A-IoT communication. The first terminal uses the first resources to conduct A-IoT communication with the A-IoT device. Using this method, in scenarios outside base station coverage, the first terminal can obtain time-frequency resources for R2D or D2R transmission, avoiding resource collision problems in scenarios outside coverage, and enabling communication between the A-IoT device and the reader in scenarios outside coverage.

[0444] It should be noted that the apparatus provided in this application embodiment can implement all the method steps implemented in the above method embodiment and can achieve the same technical effect. Here, the parts that are the same as those in the method embodiment and the beneficial effects will not be described in detail.

[0445] like Figure 16 As shown in the illustration, this application also provides an A-IoT resource indication device, applied to a second device, the device comprising:

[0446] The receiving unit 1601 is configured to receive first information sent by the first device, the first information being used to indicate at least one first resource reserved by the first device, the first resource being used for A-IoT communication;

[0447] Wherein, the first device is a first terminal, and the second device is a second terminal;

[0448] Alternatively, the first device may be a first A-IoT device, and the second device may be a second A-IoT device.

[0449] As an optional embodiment, the first information includes at least one of the following:

[0450] First indication information, wherein the first indication information is used to indicate the time domain information of the first resource;

[0451] The second indication information is used to indicate the frequency domain information of the first resource;

[0452] Resource cycle information, wherein the resource cycle information is used to indicate the cycle value of the first resource;

[0453] Priority information, which indicates the priority value of the first resource.

[0454] As an optional embodiment, the first information is direct link control information.

[0455] As an optional embodiment, the first resource occupies one or more consecutive transmission time intervals in the time domain;

[0456] The first resource occupies one or more consecutive sub-channels in the frequency domain.

[0457] As an optional embodiment, the transmission time interval includes at least one of the following: time slot, mini time slot, N orthogonal frequency division multiplexing (OFDM) symbols, where N is a positive integer.

[0458] As an optional embodiment, if the first information indicates two or more first resources,

[0459] The two or more first resources occupy the same number of sub-channels in the frequency domain.

[0460] As an optional embodiment, the first resource occupies at least one time slot;

[0461] In each time slot, Automatic Gain Control (AGC) and Guard Interval (GP) each occupy one OFDM symbol.

[0462] As an optional embodiment, the first resource is a resource in a first resource pool; wherein, the resources in the first resource pool are used for communication between the terminal and the A-IoT device, or the resources in the first resource pool are used for the transmission of A-IoT-related information between terminals.

[0463] As an optional embodiment, the first resource pool includes at least one sub-channel in the frequency domain, and each sub-channel occupies a contiguous resource block;

[0464] And / or,

[0465] The first resource pool includes at least one resource cycle.

[0466] As an optional embodiment, the first resource pool includes: a resource pool for reader-to-device R2D transmission, and / or a resource pool for device-to-reader D2R transmission.

[0467] As an optional embodiment, the apparatus further includes:

[0468] The second receiving unit is used to receive third information sent by the first device, the third information being used to instruct the first device to release the first resource that was reserved.

[0469] As an optional embodiment, the second resource occupied by the first information and the first resource indicated by the first information occupy N1 consecutive time slots in the time domain; N1 is an integer greater than or equal to 1;

[0470] The second resource occupancy refers to part or all of the frequency domain resources of the K1 OFDM symbols in the first time slot of the N1 time slots, where K1 is an integer greater than or equal to 2;

[0471] The first resource indicated by the first information includes: resources in the N1 time slots other than the second resource, the OFDM symbols occupied by AGC, and the OFDM symbols occupied by GP.

[0472] As an optional embodiment, the second resource occupied by the first information and the first resource indicated by the first information occupy N2 consecutive time slots in the time domain; N2 is an integer greater than or equal to 1;

[0473] The second resource occupancy refers to part or all of the frequency domain resources of the K2 OFDM symbols in the first time slot of the N2 time slots, where K2 is an integer greater than or equal to 2;

[0474] The first resource indicated by the first information includes: resources in the N2 time slots other than the second resource, the OFDM symbols occupied by AGC, and the OFDM symbols occupied by GP.

[0475] As an optional embodiment, the receiving unit is further configured to:

[0476] The first information is received once within a resource perception window of the first device, wherein the resource perception window is a time window corresponding to the time required for the first device to perform one resource perception.

[0477] As an optional embodiment, K1 and / or K2 may take any of the following values:

[0478] M-2, where M is the number of OFDM symbols contained in a time slot;

[0479] A predefined value, wherein the predefined value is less than M-2.

[0480] In the A-IoT transmission resource indication device for scenarios outside base station coverage in this application embodiment, a first terminal sends first information to a second terminal, indicating to the second terminal through the first information that the first terminal has reserved first resources for A-IoT communication. The first terminal uses the first resources to conduct A-IoT communication with the A-IoT device. Using this method, in scenarios outside base station coverage, the first terminal can obtain time-frequency resources for R2D or D2R transmission, avoiding resource collision problems in scenarios outside coverage, and enabling communication between the A-IoT device and the reader in scenarios outside coverage.

[0481] It should be noted that the apparatus provided in this application embodiment can implement all the method steps implemented in the above method embodiment and can achieve the same technical effect. Here, the parts that are the same as those in the method embodiment and the beneficial effects will not be described in detail.

[0482] It should be noted that the division of units in the embodiments of this application is illustrative and only represents one logical functional division. In actual implementation, other division methods may be used. Furthermore, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated units described above can be implemented in hardware or as software functional units.

[0483] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a processor-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) or processor to execute all or part of the steps of the methods described in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0484] This application also provides a processor-readable storage medium storing a computer program. The computer program is used to cause the processor to execute the various processes described in the A-IoT resource indication method embodiments above, achieving the same technical effects. To avoid repetition, these processes will not be repeated here. The processor-readable storage medium can be any available medium or data storage device accessible to the processor, including but not limited to magnetic storage (e.g., floppy disks, hard disks, magnetic tapes, magneto-optical disks (MO), etc.), optical storage (e.g., CDs, DVDs, BDs, HVDs, etc.), and semiconductor storage (e.g., ROMs, EPROMs, EEPROMs, non-volatile memory (NAND flash), solid-state drives (SSDs)).

[0485] This application also provides a computer program product, including computer instructions. When the computer instructions are executed by a processor, they implement the various processes in the A-IoT resource indication method embodiments described above and achieve the same technical effect. To avoid repetition, they will not be described again here.

[0486] Those skilled in the art will understand that embodiments of this application can be provided as methods, systems, or computer program products. Therefore, this application can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this application can take the form of a computer program product implemented on one or more computer-usable storage media (including, but not limited to, disk storage and optical storage) containing computer-usable program code.

[0487] This application is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of this application. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer-executable instructions. These computer-executable instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart... Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0488] These processor-executable instructions may also be stored in a processor-readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the processor-readable memory produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0489] These processors can execute instructions that can also be loaded onto a computer or other programmable data processing device, causing a series of operational steps to be performed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable device for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0490] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Therefore, if such modifications and variations fall within the scope of the claims of this application and their equivalents, this application also intends to include such modifications and variations.

Claims

1. A method for indicating environmental Internet of Things (A-IoT) resources, characterized in that, The method includes: The first device sends first information to the second device, the first information being used to indicate at least one first resource reserved by the first device, the first resource being used for A-IoT communication; Wherein, the first device is a first terminal, and the second device is a second terminal; Alternatively, the first device may be a first A-IoT device, and the second device may be a second A-IoT device.

2. The method according to claim 1, characterized in that, The first information includes at least one of the following: First indication information, wherein the first indication information is used to indicate the time domain information of the first resource; The second indication information is used to indicate the frequency domain information of the first resource; Resource cycle information, wherein the resource cycle information is used to indicate the cycle value of the first resource; Priority information, which indicates the priority value of the first resource.

3. The method according to claim 1 or 2, characterized in that, The first piece of information is direct link control information.

4. The method according to claim 1 or 2, characterized in that, The first resource occupies one or more consecutive transmission time intervals in the time domain; The first resource occupies one or more consecutive sub-channels in the frequency domain.

5. The method according to claim 4, characterized in that, The transmission time interval includes at least one of the following: time slot, mini time slot, and N orthogonal frequency division multiplexing (OFDM) symbols, where N is a positive integer.

6. The method according to claim 1 or 2, characterized in that, When the first information indicates two or more first resources, the two or more first resources occupy the same number of sub-channels in the frequency domain.

7. The method according to claim 1 or 2, characterized in that, The first resource occupies at least one time slot; In each time slot, Automatic Gain Control (AGC) and Guard Interval (GP) each occupy one OFDM symbol.

8. The method according to claim 1, characterized in that, The first resource is a resource in a first resource pool; wherein, the resources in the first resource pool are used for communication between the terminal and the A-IoT device, or for the transmission of A-IoT-related information between terminals.

9. The method according to claim 8, characterized in that, The first resource pool includes at least one sub-channel in the frequency domain, and each sub-channel occupies a contiguous resource block; And / or, The first resource pool includes at least one resource cycle.

10. The method according to claim 8 or 9, characterized in that, The first resource pool includes: a resource pool for reader-to-device R2D transmission, and / or a resource pool for device-to-reader D2R transmission.

11. The method according to any one of claims 1-10, characterized in that, The method further includes: Receive second information sent by at least one third device, the second information being used to indicate that the third device has reserved resources for A-IoT communication; A second resource pool is determined based on the second information; the resources in the second resource pool have not been reserved by the third device. Based on the second resource pool, at least one first resource reserved for the first device is determined.

12. The method according to claim 11, characterized in that, The receipt of second information sent by at least one third device includes: Within a resource sensing window, the first device receives second information sent by at least one third device; wherein the resource sensing window is a time window corresponding to the time required for the first device to perform one resource sensing operation.

13. The method according to claim 1, characterized in that, The method further includes: The first device divides the at least one first resource reserved for the R2D transmission into a first resource set for R2D transmission and a second resource set for D2R transmission. The first device uses the first resource set to send a paging message for A-IoT communication or a random access message 2 for A-IoT communication; The paging message or random access message 2 used for A-IoT communication carries information about the second resource set.

14. The method according to claim 13, characterized in that, The paging message used for A-IoT communication also carries R2D transmission parameter information and / or D2R transmission parameter information.

15. The method according to claim 1, characterized in that, The method further includes: The first device sends a third message to the second device, the third message being used to instruct the first device to release the first resource that was reserved.

16. The method according to claim 1, characterized in that, The second resource occupied by the first information and the first resource indicated by the first information occupy N1 consecutive time slots in the time domain; N1 is an integer greater than or equal to 1; The second resource occupancy refers to part or all of the frequency domain resources of the K1 OFDM symbols in the first time slot of the N1 time slots, where K1 is an integer greater than or equal to 2; The first resource indicated by the first information includes: resources in the N1 time slots other than the second resource, the OFDM symbols occupied by AGC, and the OFDM symbols occupied by GP.

17. The method according to claim 1, characterized in that, The second resource occupied by the first information and the first resource indicated by the first information occupy N2 consecutive time slots in the time domain; N2 is an integer greater than or equal to 1; The second resource occupancy refers to part or all of the frequency domain resources of the K2 OFDM symbols in the first time slot of the N2 time slots, where K2 is an integer greater than or equal to 2; The first resource indicated by the first information includes: resources in the N2 time slots other than the second resource, the OFDM symbols occupied by AGC, and the OFDM symbols occupied by GP.

18. The method according to claim 1, characterized in that, The first device sends first information to the second device, including: The first device sends first information to the second device once within a resource perception window; wherein, the resource perception window is the time window corresponding to the time required for the first device to perform one resource perception.

19. The method according to claim 16 or 17, characterized in that, K1 and / or K2 can take any of the following values: M-2, where M is the number of OFDM symbols contained in a time slot; A predefined value, wherein the predefined value is less than M-2.

20. A method for indicating A-IoT resources, characterized in that, The method includes: The second device receives first information sent by the first device, the first information being used to indicate at least one first resource reserved by the first device, the first resource being used for A-IoT communication; Wherein, the first device is a first terminal, and the second device is a second terminal; Alternatively, the first device may be a first A-IoT device, and the second device may be a second A-IoT device.

21. A first device, characterized in that, Includes memory, transceiver, and processor: A memory for storing computer programs; a transceiver for sending and receiving data under the control of the processor; and a processor for reading the computer programs from the memory and performing the following operations: Send first information to the second device, the first information being used to indicate at least one first resource reserved by the first device, the first resource being used for A-IoT communication; Wherein, the first device is a first terminal, and the second device is a second terminal; Alternatively, the first device may be a first A-IoT device, and the second device may be a second A-IoT device.

22. A second device, characterized in that, Includes memory, transceiver, and processor: A memory for storing computer programs; a transceiver for sending and receiving data under the control of the processor; and a processor for reading the computer programs from the memory and performing the following operations: Receive first information sent by a first device, the first information being used to indicate at least one first resource reserved by the first device, the first resource being used for A-IoT communication; Wherein, the first device is a first terminal, and the second device is a second terminal; Alternatively, the first device may be a first A-IoT device, and the second device may be a second A-IoT device.

23. An indicator device for A-IoT resources, characterized in that, Applied to a first device, the device includes: A sending unit is configured to send first information to a second device, the first information being used to indicate at least one first resource reserved by the first device, the first resource being used for A-IoT communication; Wherein, the first device is a first terminal, and the second device is a second terminal; Alternatively, the first device may be a first A-IoT device, and the second device may be a second A-IoT device.

24. An indication device for A-IoT resources, characterized in that, Applied to a second device, the device includes: A receiving unit is configured to receive first information sent by a first device, the first information being used to indicate at least one first resource reserved by the first device, the first resource being used for A-IoT communication; Wherein, the first device is a first terminal, and the second device is a second terminal; Alternatively, the first device may be a first A-IoT device, and the second device may be a second A-IoT device.

25. A processor-readable storage medium, characterized in that, The processor-readable storage medium stores a program for causing the processor to perform the method of any one of claims 1 to 19, or the program for causing the processor to perform the method of claim 20.

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