Information transmission method and apparatus

Abstract

A method and apparatus for information transmission, which can enable a first device to perform power control when transmitting a signal. The method comprises receiving first information from a second device, the first information comprising information indicating a path loss (PL) or a PL range between the first device and the second device; and transmitting second information using a first transmission power, the first transmission power being determined based on the PL or the PL range.

Description

Technical Field

[0001] This application relates to the field of communications, and more particularly to an information transmission method and apparatus. Background Technology

[0002] The Ambient Internet of Things (AIoT) is a network of Internet of Things (IoT) devices with limited or no battery storage. AIoT devices (also known as IoT devices) rely on harvesting energy from the environment to power themselves, such as solar energy, radio waves, motion, vibration, heat, or pressure.

[0003] AIoT devices can typically communicate with readers; however, power control during the communication process requires further optimization and improvement. Summary of the Invention

[0004] This application provides an information transmission method and apparatus that enables a first device (e.g., a reader) to perform power control when transmitting signals. For example, when the reader transmits signals to multiple AIoT devices, it helps to reduce interference between the multiple signals transmitted by the reader while ensuring that the signal power is sufficient for successful reception by the AIoT devices, thereby improving communication performance.

[0005] To achieve the above objectives, the embodiments of this application adopt the following technical solutions:

[0006] In a first aspect, a method for information transmission is provided, which can be executed by a first device or by a chip or circuit in the first device. The first device may be a reader, UE, BS, relay node, or auxiliary node, etc. The method includes: receiving first information from a second device, the first information including information indicating a path loss PL or a PL range between the first device and the second device; and transmitting second information using a first transmit power, the first transmit power being determined based on the PL or the PL range.

[0007] For example, the second information can be message 2 (msg 2), or it can be an acknowledgment (ACK) of the first information. Based on the power level (PL) between the first device and the second device, the first device can determine the first transmit power. In this case, the first device can implement power control of the second information. For example, the first transmit power will not be too low, meaning the second information sent by the first device can be received by the second device. The first transmit power will also not be too high, thus reducing interference generated by multiple second messages during transmission. The above method allows the first device to regulate the transmission power of the second information and subsequent signals, facilitating smooth communication. Furthermore, a suitable transmission power can reduce energy consumption during communication, contributing to energy saving for the first device.

[0008] In conjunction with the first aspect, in some implementations of the first aspect, the method further includes: sending third information, the third information including information for indicating a target received power value of the first device.

[0009] The third information can be a selection command or msg 0. For example, the third information is msg 0, and it can function as a paging message. For instance, msg 0 as a paging message can include selection and query commands. The third information can indicate the target received power value of the first device. For example, if the first device is a UE, and the UE may not be able to receive a signal with too weak a power, the minimum power of the signal that the UE can receive can be the target received power value.

[0010] In conjunction with the first aspect, in some implementations of the first aspect, the third information further includes information for indicating the transmission power used by the first device when transmitting the third information.

[0011] In this scenario, due to the presence of the power level (PL), the power of the third information received by the second device will be less than the transmitted power. Based on this power difference, the second device can determine the PL between itself and the first device. Furthermore, the second device can determine the transmitted power based on the target received power value of the first device and the PL between itself and the first device.

[0012] In conjunction with the first aspect, in some implementations of the first aspect, the third information also includes message 0.

[0013] It should be noted that message 0 can be understood as msg 0, or as a message used for paging.

[0014] In conjunction with the first aspect, in some implementations of the first aspect, the method further includes: sending fourth information, the fourth information including information for indicating the transmission power used by the first device when sending the fourth information.

[0015] The third and fourth messages can be combined into a single message, msg 0, which serves as a paging message and may include selection and query commands. Alternatively, the third and fourth messages can be separated, in which case the fourth message is msg 0, and the third message can be a selection command. This provides a more flexible option for the communication process.

[0016] In conjunction with the first aspect, in some implementations of the first aspect, the number of the second devices is multiple, and the first transmission power is determined based on the maximum value of PL or PL range between the first device and the multiple second devices.

[0017] The first device can send the second information to all of the multiple second devices. Alternatively, the first device can send the second information to some of the multiple second devices.

[0018] The first transmission power used by the first device to transmit multiple second messages may have the same value. This first transmission power allows the second device with the highest power PL (e.g., the second device furthest from the first device) to also receive the second messages. In this case, computational and scheduling complexity can be reduced.

[0019] In conjunction with the first aspect, in some implementations of the first aspect, the number of the second devices is multiple, and the first transmission power includes multiple sub-transmission powers equal to the number of the multiple second devices, the multiple sub-transmission powers being determined based on the PL or PL range between the first device and the multiple second devices, respectively.

[0020] The first transmission power includes a sub-transmission power equal to the number of the plurality of second devices. The first device uses the plurality of sub-transmission powers to transmit second information to the plurality of second devices respectively, and correspondingly, the plurality of second devices receive the second information. In this case, the value of the first transmission power used by the first device to transmit the plurality of second information may be different. For example, the first device may select an appropriate sub-transmission power for transmitting the second information based on the PL or PL range between the first device and the plurality of second devices.

[0021] In this case, the first device can adjust the power for different communication links and select different first transmission powers according to different power levels or power ranges, which helps to improve the flexibility of the first device in sending multiple second messages.

[0022] In conjunction with the first aspect, in some implementations of the first aspect, the second information includes confirmation information of the first information.

[0023] For example, the second information is ACK. The first device can send ACK to all of the multiple second devices (indicating that all the multiple second devices have passed the authentication of the first device and can carry out subsequent data transmission with the first device). The first device can also send ACK to some of the multiple second devices (indicating that some of the second devices have passed the authentication of the first device and can carry out subsequent data transmission with the first device).

[0024] In conjunction with the first aspect, in some implementations of the first aspect, the first information may further include a random number or the identifier of the second device.

[0025] For example, the first information may be msg 1, which may include a random number (e.g., a 16-bit radio frequency identification tag number (RN16)) or the identifier of the second device (e.g., an electronic product code (EPC)).

[0026] In conjunction with the first aspect, in some implementations of the first aspect, the first information further includes message 1 and / or the second information includes message 2.

[0027] It should be noted that message 1 can be understood as msg 1, or as a message used for random access. Message 2 can be understood as msg 2, or as a response message to msg 1, or as a response message to the random access message.

[0028] Secondly, a method for information transmission is provided, which can be executed by a first device or by a chip or circuit in the first device. The first device may be a reader, UE, BS, relay node, or auxiliary node, etc. The method includes: receiving first information from a second device, wherein the time-domain resources of the first information are associated with a PL range between the first device and the second device; and transmitting second information using a first transmit power, wherein the first transmit power is determined based on the PL range.

[0029] Based on the time-domain resources of the first information, the first device can obtain the power PL range between itself and the second device, and determine the first transmission power. In this case, the first device can control the power of the second information. For example, the first transmission power will not be too low, meaning the second information transmitted by the first device can be received by the second device. The first transmission power will also not be too high, thus reducing interference generated by multiple pieces of second information during transmission. The same method can be used to regulate the transmission power of the second information and subsequent signals, facilitating smooth communication. Furthermore, a suitable transmission power can reduce energy consumption during communication, contributing to energy saving for the first device.

[0030] In conjunction with the second aspect, in some implementations of the second aspect, the method further includes: sending third information, the third information including information for indicating a target received power value for the first device.

[0031] In conjunction with the second aspect, in some implementations of the second aspect, the third information further includes information for indicating the transmission power used by the first device when transmitting the third information.

[0032] In conjunction with the second aspect, in some implementations of the second aspect, the third information further includes information for indicating the association between the time-domain resources of the first information and the PL range.

[0033] For example, different PL ranges can be associated with different time-domain resources. For instance, one PL range can correspond to one time-domain resource, one PL range can correspond to multiple time-domain resources, or multiple PL ranges can correspond to one time-domain resource. The association between PL ranges and time-domain resources can be carried in third-party information, other information, or predefined by the protocol. The association can be represented by tables, formulas, or other forms.

[0034] In conjunction with the second aspect, in some implementations of the second aspect, the third information also includes message 0.

[0035] In conjunction with the second aspect, in some implementations of the second aspect, the method further includes: sending fourth information, the fourth information including information for indicating the transmission power used by the first device when sending the fourth information.

[0036] In conjunction with the second aspect, in some implementations of the second aspect, the fourth information further includes information for indicating the association between the time-domain resources of the first information and the PL range.

[0037] In conjunction with the second aspect, in some implementations of the second aspect, the number of the second devices is multiple, and the first transmission power is determined based on the maximum value in the PL range between the first device and the multiple second devices.

[0038] In conjunction with the second aspect, in some implementations of the second aspect, the number of the second devices is multiple, and the first transmission power includes multiple sub-transmission powers equal to the number of the multiple second devices, the multiple sub-transmission powers being determined based on the PL range between the first device and the multiple second devices respectively.

[0039] In conjunction with the second aspect, in some implementations of the second aspect, the second information includes confirmation information of the first information.

[0040] In conjunction with the second aspect, in some implementations of the second aspect, the first information may further include a random number or the identifier of the second device.

[0041] In conjunction with the second aspect, in some implementations of the second aspect, the first information includes message 1 and / or the second information includes message 2.

[0042] Thirdly, a method for information transmission is provided, which can be executed by a first device or by a chip or circuit in the first device. The first device may be a reader, UE, BS, relay node, or auxiliary node, etc. The method includes: receiving first information from a second device, the first information including information indicating the transmission power used by the second device when transmitting the first information; and transmitting second information using the first transmission power, the first transmission power being determined based on the transmission power used by the second device when transmitting the first information.

[0043] The second device can be instructed on the transmission power used to send the first information. Based on this transmission power, the first device can adjust the transmission power used to send the second information. Similarly, the transmission power corresponding to the second information will not be too low or too high, thereby helping to reduce interference generated by multiple second information messages during transmission. Achieving control over the transmission power of the second information by the first device through the above method is beneficial for improving communication performance.

[0044] In conjunction with the third aspect, in some implementations of the third aspect, the first transmission power is determined based on the power level (PL) between the first device and the second device, wherein the PL is determined based on the transmission power used by the second device when transmitting the first information.

[0045] Similarly, due to the presence of the power level (PL), the power of the first information received by the first device will be less than the transmitted power. The second device can determine the PL between the second device and the first device. In other words, the first device can calculate the signal strength attenuation between the first device and the second device during communication.

[0046] In conjunction with the third aspect, in some implementations of the third aspect, the number of the second devices is multiple, and the first transmission power is determined based on the maximum value of the power PL among the first device and the multiple second devices.

[0047] In conjunction with the third aspect, in some implementations of the third aspect, the number of the second devices is multiple, and the first transmission power includes multiple sub-transmission powers equal to the number of the multiple second devices, the multiple sub-transmission powers being determined based on the PL between the first device and the multiple second devices respectively.

[0048] In conjunction with the third aspect, in some implementations of the third aspect, the second information includes information for indicating the PL between the first device and the second device.

[0049] In this situation, the first and second devices have completed the synchronization of PL, which is also conducive to the smooth progress of subsequent communication between the two parties.

[0050] In conjunction with the third aspect, in some implementations of the third aspect, the method further includes: sending third information, the third information including information for indicating a target received power value for the first device.

[0051] In conjunction with the third aspect, in some implementations of the third aspect, the third information includes message 0.

[0052] In conjunction with the third aspect, in some implementations of the third aspect, the information used to indicate the transmission power employed when the second device transmits the first information includes: the carrier signal strength detected by the second device and the signal amplification factor of the second device.

[0053] There can be various ways to indicate the transmission power used to send the first information. For example, the first information could indicate the carrier signal strength detected by the second device and the signal amplification factor of the second device. The first device can also calculate the transmission power using the carrier signal strength and the signal amplification factor.

[0054] In conjunction with the third aspect, in some implementations of the third aspect, the second information includes confirmation information of the first information.

[0055] In conjunction with the third aspect, in some implementations of the third aspect, the first information may also include a random number or the identifier of the second device.

[0056] In conjunction with the third aspect, in some implementations of the third aspect, the method further includes: receiving fifth information, the fifth information including data.

[0057] For example, the fifth piece of information could be msg 3 (e.g., data information or the identifier of an AIoT device).

[0058] In conjunction with the third aspect, in some implementations of the third aspect, the first information further includes message 1 and / or the second information includes message 2.

[0059] Fourthly, a method for information transmission is provided, which can be executed by a second device or by a chip or circuit in the second device. The second device can be an AIoT device, UE, BS, relay node, or auxiliary node, etc. The method includes: sending first information, the first information including information for indicating the PL or PL range between the first device and the second device, or the first information including information for indicating the transmit power used by the second device when sending the first information, or the time-domain resources of the first information being associated with the PL range between the first device and the second device.

[0060] In conjunction with the fourth aspect, in some implementations of the fourth aspect, the first information includes information for indicating the power PL or PL range between the first device and the second device; the method further includes: receiving third information, the third information including information for indicating a target received power value of the first device; the sending of the first information includes: sending the first information using a second transmit power, the second transmit power being determined based on the target received power value and the power PL or PL range between the first device and the second device.

[0061] Similar to the first device, when multiple second devices transmit signals, excessively powerful signals can interfere with other signals. In this case, the second devices can control the power of the first information and subsequent communication. In this scenario, the second transmission power will not be too low, meaning the first information transmitted by the second device can be received by the first device. Nor will the second transmission power be too high, thus reducing interference generated by multiple first information transmissions. The second devices can regulate the transmission power of the first information and subsequent signals, thereby reducing signal interference and energy consumption during communication.

[0062] In conjunction with the fourth aspect, in some implementations of the fourth aspect, the third information further includes information for indicating the transmission power used by the first device when transmitting the third information.

[0063] In conjunction with the fourth aspect, in some implementations of the fourth aspect, the method further includes: receiving fourth information, the fourth information including information for indicating the transmission power used by the first device when transmitting the fourth information.

[0064] In conjunction with the fourth aspect, in some implementations of the fourth aspect, the third information also includes message 0.

[0065] In conjunction with the fourth aspect, in some implementations of the fourth aspect, the time-domain resources of the first information are associated with the PL range between the first device and the second device; the method further includes: receiving third information, the third information including information for indicating a target receive power value of the first device; the sending of the first information includes: sending the first information using a second transmit power, the second transmit power being determined based on the target receive power value and the PL range between the first device and the second device.

[0066] In this configuration, the second device can control the power of the first information. For example, the second transmission power will not be too low, meaning the first information transmitted by the second device can be received by the first device. The second transmission power will also not be too high, thus reducing interference generated by multiple pieces of first information during transmission. The second device can regulate the transmission power of the first information and subsequent signals, thereby reducing signal interference and energy consumption during communication.

[0067] In conjunction with the fourth aspect, in some implementations of the fourth aspect, the third information further includes information for indicating the transmission power used by the first device when transmitting the third information.

[0068] In conjunction with the fourth aspect, in some implementations of the fourth aspect, the third information further includes information for indicating the association between the time-domain resources of the first information and the PL range.

[0069] In conjunction with the fourth aspect, in some implementations of the fourth aspect, the method further includes: receiving fourth information, the fourth information including information for indicating the transmission power used by the first device when transmitting the fourth information.

[0070] In conjunction with the fourth aspect, in some implementations of the fourth aspect, the fourth information further includes information for indicating the association between the time-domain resources of the first information and the PL range.

[0071] In conjunction with the fourth aspect, in some implementations of the fourth aspect, the third information also includes message 0.

[0072] In conjunction with the fourth aspect, in some implementations of the fourth aspect, the first information includes information for indicating the transmission power used when the second device transmits the first information; the method further includes: receiving second information, the second information including information for indicating the power level (PL) between the first device and the second device.

[0073] In conjunction with the fourth aspect, in some implementations of the fourth aspect, the method further includes: receiving third information, the third information including information for indicating a target receive power value of the first device; transmitting fifth information using a third transmit power, the fifth information including data, the third transmit power being determined based on the target receive power value and the power level (PL) between the first device and the second device.

[0074] By using the target received power value and PL, the second device can regulate the transmission power of the fifth information and subsequent signals, thereby reducing signal interference and energy consumption during communication.

[0075] In conjunction with the fourth aspect, in some implementations of the fourth aspect, the third information also includes message 0.

[0076] In conjunction with the fourth aspect, in some implementations of the fourth aspect, the information used to indicate the transmission power employed when the second device transmits the first information includes: the carrier signal strength detected by the second device and the signal amplification factor of the second device.

[0077] In conjunction with the fourth aspect, in some implementations of the fourth aspect, the second information includes confirmation information of the first information.

[0078] In conjunction with the fourth aspect, in some implementations of the fourth aspect, the second information also includes message 2.

[0079] In conjunction with the fourth aspect, in some implementations of the fourth aspect, the first information may also include a random number or the identifier of the second device.

[0080] In conjunction with the fourth aspect, in some implementations of the fourth aspect, the first information also includes message 1.

[0081] Fifthly, an information transmission apparatus is provided for performing the method in any one of the possible implementations of the first, second, third, or fourth aspects described above. Specifically, the apparatus includes a unit / module for performing the method in any one of the possible implementations of the first, second, third, or fourth aspects described above.

[0082] Sixthly, this application provides yet another information transmission device, including a processor coupled to a memory, which can be used to execute instructions in the memory to implement the methods in any of the possible implementations of the first, second, third, or fourth aspects described above. Optionally, the information transmission device further includes a memory. Optionally, the information transmission device further includes a communication interface, and the processor is coupled to the communication interface.

[0083] In one implementation, the information transmission device is a first device. When the information transmission device is a first device, the aforementioned communication interface can be a transceiver or an input / output interface.

[0084] In another implementation, the information transmission device is a chip configured in the first device. When the information transmission device is a chip configured in the first device, the communication interface can be an input / output interface.

[0085] In one implementation, the information transmission device is a second device. When the information transmission device is a second device, the aforementioned communication interface can be a transceiver or an input / output interface.

[0086] In another implementation, the information transmission device is a chip configured in the second device. When the information transmission device is a chip configured in the second device, the communication interface can be an input / output interface.

[0087] A seventh aspect provides a processor, comprising: an input circuit, an output circuit, and a processing circuit. The processing circuit is configured to receive signals through the input circuit and transmit signals through the output circuit, causing the processor to execute the method in any one of the possible implementations of the first, second, third, or fourth aspects described above.

[0088] In specific implementation, the processor can be a chip, the input circuit can be an input pin, the output circuit can be an output pin, and the processing circuit can be a transistor, gate circuit, flip-flop, and various logic circuits. The input signal received by the input circuit can be received and input by, for example, but not limited to, a receiver, and the signal output by the output circuit can be output to, for example, but not limited to, a transmitter and transmitted by the transmitter. Furthermore, the input circuit and the output circuit can be the same circuit, which is used as the input circuit and the output circuit at different times. This application does not limit the specific implementation of the processor and various circuits.

[0089] Eighthly, a processing apparatus is provided, including a processor and a memory. The processor is configured to read instructions stored in the memory and to receive signals via a receiver and transmit signals via a transmitter to execute the methods in any of the possible implementations of the first, second, third, or fourth aspects described above.

[0090] Optionally, the processor may be one or more, and the memory may be one or more.

[0091] Optionally, the memory may be integrated with the processor, or the memory may be separated from the processor.

[0092] In specific implementation, the memory can be a non-transitory memory, such as read-only memory (ROM), which can be integrated with the processor on the same chip or set on different chips. The embodiments of this application do not limit the type of memory or the way the memory and processor are set.

[0093] It should be understood that the relevant data interaction process, such as sending indication information, can be the process of outputting indication information from the processor, and receiving capability information can be the process of the processor receiving input capability information. Specifically, the processed output data can be output to the transmitter, and the input data received by the processor can come from the receiver. Here, the transmitter and receiver can be collectively referred to as a transceiver.

[0094] The processing device in the eighth aspect can be a chip. The processor can be implemented in hardware or software. When implemented in hardware, the processor can be a logic circuit, integrated circuit, etc. When implemented in software, the processor can be a general-purpose processor that reads software code stored in a memory. The memory can be integrated into the processor or located outside the processor and exist independently.

[0095] A ninth aspect provides a communication system comprising a first device and a second device. In one possible implementation, the first device is configured to perform the method of any one of the possible implementations of the first, second, or third aspect, and the second device is configured to perform the method of any one of the possible implementations of the fourth aspect.

[0096] In a tenth aspect, a computer program product is provided, the computer program product comprising: a computer program (also referred to as code or instructions), which, when the computer program is run, causes a computer to perform the method in any of the possible implementations of the first, second, third, or fourth aspects described above.

[0097] Eleventhly, a computer-readable storage medium is provided, the computer-readable storage medium storing a computer program (also referred to as code or instructions) that, when run on a computer, causes the computer to perform the methods in any of the possible implementations of the first, second, third, or fourth aspects described above. Attached Figure Description

[0098] Figure 1 This is a schematic diagram of the topology applicable to the embodiments of this application;

[0099] Figure 2 This is a schematic diagram illustrating a possible communication scenario to which embodiments of this application apply;

[0100] Figure 3 This is a schematic diagram illustrating another possible communication scenario to which the embodiments of this application apply;

[0101] Figure 4 This is a schematic diagram of a possible communication method for tag inventory.

[0102] Figure 5 A schematic diagram of another possible communication method for tag inventory;

[0103] Figure 6 This is a schematic diagram of yet another possible communication method for tag inventory;

[0104] Figure 7 This is a schematic diagram of yet another possible communication method for tag inventory;

[0105] Figure 8 A schematic diagram illustrating an information transmission method provided in an embodiment of this application;

[0106] Figure 9 A schematic diagram illustrating another information transmission method provided in an embodiment of this application;

[0107] Figure 10A schematic diagram illustrating yet another information transmission method provided in an embodiment of this application;

[0108] Figure 11 A schematic block diagram of an information transmission device provided in an embodiment of this application;

[0109] Figure 12 A schematic block diagram of another information transmission device provided in the embodiments of this application;

[0110] Figure 13 This is a schematic block diagram of another information transmission device provided in the embodiments of this application. Detailed Implementation

[0111] The technical solutions in this application will now be described with reference to the accompanying drawings.

[0112] The technical solutions of this application embodiment can be applied to various communication systems, such as narrowband Internet of Things (NB-IoT) systems, wireless fidelity (WiFi) systems, vehicle-to-everything (V2X) communication systems, device-to-device (D2D) communication systems, vehicle-to-everything (V2X) communication systems, 4th generation (4G) mobile communication systems, such as long term evolution (LTE) systems, worldwide interoperability for microwave access (WiMAX) communication systems, 5th generation (5G) mobile communication systems, such as new radio (NR) systems, and future communication systems, etc.

[0113] This application will present various aspects, embodiments, or features relating to systems that may include multiple devices, components, modules, etc. It should be understood and appreciated that individual systems may include additional devices, components, modules, etc., and / or may not include all the devices, components, modules, etc. discussed in conjunction with the accompanying drawings. Furthermore, combinations of these approaches are also possible.

[0114] Furthermore, in the embodiments of this application, words such as "exemplarily" and "for example" are used to indicate that something is an example, illustration, or description. Any embodiment or design that is described as an "example" in this application should not be construed as being better or more advantageous than other embodiments or designs. Rather, the use of the word "example" is intended to present the concept in a specific manner.

[0115] The network architecture and business scenarios described in the embodiments of this application are for the purpose of more clearly illustrating the technical solutions of the embodiments of this application, and do not constitute a limitation on the technical solutions provided in the embodiments of this application. As those skilled in the art will know, with the evolution of network architecture and the emergence of new business scenarios, the technical solutions provided in the embodiments of this application are also applicable to similar technical problems.

[0116] To facilitate understanding of the embodiments of this application, let's first take... Figure 1 The possible topologies shown are illustrated in the figure, and the topologies applicable to the embodiments of this application are described in detail.

[0117] Figure 1 This is a schematic diagram of the topology to which embodiments of this application apply. For example... Figure 1 As shown, the topology includes topology 1, topology 2, topology 3 (topology 3A and topology 3B), and topology 4. In Figure 1 In the various topologies shown, the communication process between network nodes can be used to transmit data (such as the operating status or health status of AIoT devices) or signaling (such as control signaling or broadcast signaling), and this application embodiment does not limit this.

[0118] Topology 1 includes Ambient Internet of Things (AIoT) devices and a base station (BS). In Topology 1, AIoT devices and the BS can communicate bidirectionally. Topology 2 includes AIoT devices, the BS, and intermediate nodes. Intermediate nodes can be relays, integrated access and backhaul (IAB) nodes, user equipment (UE), or repeaters. The main function of intermediate nodes is to forward signals and data, helping to improve the transmission performance and coverage of the wireless network. Topology 2 includes AIoT devices, intermediate nodes, and the BS. In Topology 2, AIoT devices communicate bidirectionally with the intermediate node located between the AIoT devices and the BS. Additionally, the intermediate node can connect to the BS via a UE to Node B (Uu) link. Topology 3 includes AIoT devices, auxiliary nodes, and the BS. In Topology 3A, AIoT devices can send data / signaling to the BS and receive data / signaling from the auxiliary node; the BS can also send data / signaling to the auxiliary node via the Uu link. Similarly, in topology 3B, the AIoT device receives data / signaling from the BS and transmits it to the auxiliary node. The auxiliary node can also send data / signaling to the BS via the Uu link. The auxiliary node can be a relay, IAB node, UE, or repeater, etc. The auxiliary node is typically used to support and enhance network performance. For example, it can provide additional processing power, cache storage, computing resources, or specific network optimization functions. Besides forwarding data / signaling, the auxiliary node can also participate in data processing, resource allocation, traffic management, etc. Topology 4 includes AIoT devices and UEs. In topology 4, the AIoT device can communicate bidirectionally with the UE.

[0119] It should be understood that Figure 1 The "BS" in this context can also refer to other network nodes, which can be any point in the network that transmits, processes, or stores information. For example, in wireless communication, network nodes can be network forwarding devices, including wireless local area networks (WLANs), access points (APs), access controllers (ACs), base stations, routers, repeaters, and sensor nodes. In wired communication, network nodes can be access routers (ARs), access / aggregation / core switches, hubs, modems, etc. A base station can be a base station in a 5G mobile communication system or a base station in a future communication system.

[0120] It should also be understood that Figure 1 The UE in the text can also be other terminal devices, such as access terminals, user units, user stations, mobile stations, mobile stations, remote stations, remote terminals, mobile devices, user terminals, terminals, wireless communication equipment, user agents, or user devices.

[0121] It should also be understood that Figure 1 The number of BS, UE, AIoT devices, relay nodes, and auxiliary nodes can all be one or more. In actual application scenarios, the actual topology may also be... Figure 1 The combination of multiple topologies is not limited in this application embodiment.

[0122] It should be noted that, Figure 1 This is a simplified diagram for ease of understanding only; the topology may also include other network application devices. Figure 1 It was not drawn in the middle.

[0123] Depending on their storage capacity, AIoT devices can be categorized as follows: Device A: Can or cannot store energy, meaning it does not have independent signal generation / amplification capabilities during backscattering transmission; also known as a passive IoT device. Device B: Can store energy, meaning it does not have independent signal generation capabilities during backscattering transmission, but the stored energy can amplify the reflected signal; also known as a semi-passive IoT device. Device C: Can store energy and has independent signal generation capabilities; also known as an active IoT device.

[0124] Currently, different types of AIoT devices can typically communicate with readers. A reader generally refers to a device or module used to collect and read data, i.e., the receiver. For example, the BS in topologies 1, 2, and 3, and the UE in topology 4, can all be readers. Given the power limitations of AIoT devices, a node is usually needed to provide a carrier wave (CW) for the AIoT device. The CW can serve as a carrier for the signal to be transmitted. This node can be called an activator. The activator may or may not be located in the topology; it can be integrated with the reader or separate from it. For example, the activator and the reader can be the same node or different nodes; this application does not impose such limitations.

[0125] For example, in Figure 1 In the topologies shown, the excitation source and the reader can share a site (refer to topologies 1, 2, and 4), meaning the excitation source and the reader are located in the same physical location and share a site address or communication channel; the excitation source and the reader can also be located separately (refer to topology 3). When the excitation source is not in the topology, the excitation source can be very close to the AIoT device, or the excitation source can be some distance away from the AIoT device.

[0126] It should be noted that the information transmission method provided in this application embodiment can be applied to... Figure 1 The topology shown is illustrated. Furthermore, the solutions in this embodiment can also be applied to other topologies, and the corresponding names can be replaced with the names of the corresponding functions in other topologies.

[0127] Figure 2This is a schematic diagram of a possible communication scenario 200 applicable to embodiments of this application. Communication scenario 200 includes: BS 201, UE 202, auxiliary UE 203, and AIoT device 204. The AIoT device 204 can communicate bidirectionally with the UE 202. For example, the UE 202 can send a downlink signal to the AIoT device 204, and the AIoT device 204 can send a reflected signal of the downlink signal back to the UE 202. The auxiliary UE 203 can act as an auxiliary node and communicate unidirectionally with the AIoT device 204. For example, the auxiliary UE 203 can send a signal wave (CW) to the AIoT device 204, and the CW can serve as a carrier for the signal to be transmitted. The auxiliary UE 203 can also communicate bidirectionally with the UE 202. For example, the auxiliary UE 203 can send data / signaling to the UE 202, and the UE 202 can also send data / signaling to the auxiliary UE 203. Furthermore, the UE 202 can also communicate bidirectionally with the BS 201. For example, BS201 can send data / signaling to UE 202, and UE 202 can also send data / signaling to BS201.

[0128] Figure 3 This is a schematic diagram of another possible communication scenario 300 applicable to the embodiments of this application. Communication scenario 300 includes: BS 301, UE 302, and AIoT device 303. The AIoT device 303 can be of type 2a or 2b. When the AIoT device 303 is type 2a, it means that the AIoT device 303 has a weaker signal transmission capability (requiring a source to provide CW), but can amplify the power of the received CW. When the AIoT device 303 is type 2b, it means that the AIoT device 303 has a stronger signal transmission capability (not requiring a source to provide CW). In communication scenario 300, UE 302 can act as a relay node. In this case, communication scenario 300 and... Figure 1The topology is similar to topology 2, and the similarities will not be repeated here. For example, UE 302 can act as a reader, receiving data / signaling from AIoT device 303 via link 2.2, and UE 302 can also send data / signaling to AIoT device 303 via link 2.1. For instance, UE 302 can send a query command to AIoT device 303 via link 2.1, requesting AIoT device 303 to return a specific type of data it stores (e.g., identification information of AIoT device 303). AIoT device 303 can send its identification information to UE 302 via link 2.2. Furthermore, UE 302 can also send data / signaling to BS 301 via link 1.1, and can also receive data / signaling from BS 301. In this case, UE 302, acting as a reader, is controlled and scheduled by BS 301.

[0129] To facilitate understanding, the following will be combined with... Figures 4 to 7 This describes the possible communication process between AIoT devices and readers.

[0130] It should be understood that the communication process between AIoT devices and readers can be referenced from the communication process between RFID tags and readers. An RFID tag is a device that can communicate with a reader via radio frequency signals.

[0131] It should also be understood that, in the embodiments of this application, the characteristics of the AIoT device can be referenced to the characteristics of the RFID tag, and the similarities will not be repeated here. The communication process between the AIoT device and the reader can also refer to the communication process between the RFID tag and the reader. The identification of the RFID tag is usually represented by the electronic product code (EPC).

[0132] Figure 4 This is a schematic diagram of a possible communication method 400 for tag inventory. The communication method 400 is performed by a reader and RFID tags.

[0133] The reader can send select commands to multiple RFID tags. These select commands filter and select tags that meet specific conditions (e.g., battery level requirements), thereby reducing unnecessary queries and improving inventory efficiency.

[0134] Next, the reader sends query commands to multiple RFID tags that meet specific conditions. These query commands request the RFID tags to return specific types of data they store (e.g., the tag number). After receiving the query commands, the multiple RFID tags, after time T1, can send their 16-bit radio frequency identification tag number (RN16) to the reader via CW. RN16 can also be understood as a 16-bit random number. For example, RN16 can be a 16-bit random number generated by the RFID tag for the reader to authenticate it. After receiving multiple RN16s, the reader can send acknowledgment (ACK) messages to the multiple RFID tags after time T2. After receiving the ACKs, the RFID tags, after time T1, can send other information about the RFID tags to the reader via CW. Examples include the RFID tag's protocol control / extended protocol control (PC / XPC), electronic product code (EPC), cyclic redundancy check (CRC), etc. The PC / XPC indicates the protocol version and related control information used by the RFID tag, the EPC indicates the identification information of the RFID tag, and the data packet CRC is used for error detection during data transmission, which helps improve data integrity and accuracy. This process can be called a single tag response.

[0135] Suppose multiple RFID tags send their EPCs to the reader via the CW (Connection Wave). After time T2, the reader receives the EPC. If the EPC is invalid or illegitimate, the reader sends a negative acknowledgment (NAK) to the multiple RFID tags. Furthermore, the reader continues to send a query repetition (QueryRep) command. This query repetition command is a repeated form of the query command, indicating that the reader re-executes the query operation, especially when the original query was unsuccessful or requires a further response. Suppose that after receiving the query repetition command, multiple RFID tags can send multiple RN16s to the reader via the CW after time T2. Suppose that multiple tags attempt to send multiple RN16s to the reader simultaneously, causing signal collisions, the reader cannot accurately distinguish the responses of each tag. This indicates a collision has occurred in the communication process, and the above process can be called a collision response.

[0136] After receiving multiple RN16 collisions, the reader will continue to send repeat query commands to multiple RFID tags after time T2. These repeat query commands can be used to continue querying information about RFID tags that have not responded successfully (e.g., RN16). If, after time T1+T3, the reader has not received a response from the RFID tags, this communication process is considered non-response. The reader will then continue to send repeat query commands to multiple RFID tags.

[0137] refer to Figure 4 The method, Figure 5 This is a schematic diagram of another possible communication method 500 for tag inventory. Communication method 500 is performed by a reader and an AIoT device. Communication method 500 is similar to communication method 400, and the similarities will not be repeated here. The difference is that after the reader receives the EPC from the AIoT device, and the EPC is correct, the reader sends an access command to the AIoT device, indicating that authentication is successful and allowing the AIoT device to access and continue the subsequent communication process. For example, the reader can send a query repeat command to the AIoT device to request more information. In communication method 500, the selection command can be carried in a paging message, which is used to locate a specific device in the network. The query command, ACK, and access command can be carried on the physical downlink shared channel (PDSCH).

[0138] based on Figure 4 and Figure 5 The aforementioned communication method, Figure 6 This is a schematic diagram of yet another possible communication method 600 for tag inventory. Communication method 600 includes:

[0139] Step 601: The reader sends a selection command to the AIoT device, and the AIoT device receives the selection command accordingly. The selection command is used to filter out AIoT devices that meet specific conditions. For example, the selection command can be carried in a paging message. Alternatively, the selection command can also be called a paging message.

[0140] Step 602: The reader sends message 0 (msg 0) to the AIoT device, and the AIoT device receives msg 0 accordingly. For example, msg 0 can be a query command used to query the identifier of the AIoT device.

[0141] In step 603, the AIoT device sends message 1 (msg 1) to the reader, and the reader receives msg 1 accordingly. For example, msg 1 can be the identifier of the AIoT device, such as EPC.

[0142] In step 604, the reader sends message 2 (msg 2) to the AIoT device, and the AIoT device receives msg 2 accordingly. For example, msg 2 can be an ACK, indicating that the identifier of the AIoT device received by the reader in step 603 is valid. In this case, the reader has successfully authenticated the AIoT device, indicating that subsequent communication can proceed.

[0143] In step 605, the AIoT device sends message 3 (msg 3) to the reader, and the reader receives msg 3 accordingly. For example, msg 3 can be data information, such as information collected, transmitted, processed, and stored by the AIoT device through sensors, devices, and networks.

[0144] In addition, selection commands and query commands can be carried together in a paging message. Figure 7 This is a schematic diagram of yet another possible communication method 700 for tag inventory. Communication method 700 includes:

[0145] Step 701: The reader sends msg 0 to the AIoT device, and the AIoT device receives msg 0 accordingly.

[0146] In this context, msg 0 can function as a paging message, used to notify AIoT devices that an event requires a response. For example, msg 0 can be a paging message, including selection and query commands to filter AIoT devices that meet specific criteria and retrieve corresponding information.

[0147] Step 702: The AIoT device sends msg 1 to the reader, and correspondingly, the AIoT device receives msg 1.

[0148] For example, msg 1 can be RN16, used by the reader to authenticate the AIoT device. When the AIoT device is selected by msg 0 in step 701, a time domain resource can be randomly generated as the access opportunity, and the RN16 corresponding to the AIoT device can be sent for authentication, thereby facilitating the normal progress of subsequent communication processes.

[0149] Step 703: The reader sends msg 2 to the AIoT device, and the AIoT device receives msg 2 accordingly.

[0150] For example, msg 2 could be an ACK, indicating that the RN16 received by the reader in step 702 is valid. In this case, the reader has successfully authenticated the AIoT device, meaning that subsequent communication can proceed.

[0151] Steps 702 and 703 above can be considered as a random access channel (RACH) process. The RACH process refers to a mechanism in which a device attempts to establish a connection with a peer device without pre-allocating resources.

[0152] In step 704, the AIoT device sends msg 3 to the reader, and the reader receives msg 3 accordingly. For example, msg 3 can be the identifier of the AIoT device, such as msg 3 being the EPC of the AIoT device.

[0153] In step 705, the reader sends msg 4 to the AIoT device, and the AIoT device receives msg 4 accordingly. For example, msg 4 can be a command, and the reader can use msg 4 to request the AIoT device to perform a corresponding operation or to respond to msg 4.

[0154] In step 706, the AIoT device sends msg 5 to the reader, and the reader receives msg 5 accordingly. For example, msg5 may be a response from the AIoT device to the command in step 705.

[0155] Communication method 700 is similar to communication method 600, and the similarities will not be repeated here. The main difference between communication method 600 and communication method 700 is that in communication method 600, the selection command and query command are carried on two separate signaling messages. In communication method 700, the selection command and query command can be considered as a single command, for example, they can be carried together in a paging message. In communication method 600, the AIoT device responds to the query command using its identifier. In communication method 700, the AIoT device responds to the paging message using RN16. Furthermore, the specific meanings of msg 0, 1, 2, and 3 differ in the two interaction processes described above.

[0156] It should be understood that power control during communication between AIoT devices and readers requires further optimization and improvement. For example, in communication method 600 or communication method 700, multiple readers may send msg 2 to multiple AIoT devices. For instance, msg 2 could be an ACK from the reader for the RN16 generated by the AIoT device, or an ACK from the reader for the identifier of the AIoT device. The transmission power used by the reader to send msg 2 may be too high or too low. When the transmission power is too low, the AIoT device may fail to receive msg 2. When the transmission power is too high, interference may occur between multiple msg 2 messages when the reader sends msg 2 to multiple AIoT devices, or when different readers are sending msg 2. For example, if one msg 2 message has a high transmission power, the signal bandwidth extension may exceed the predetermined frequency range, thus affecting adjacent channel signals and causing interference between different signals, thereby affecting subsequent communication. Therefore, the reader may need to perform power control on the transmission power used to send msg 2.

[0157] In view of this, embodiments of this application provide an information transmission method in which a reader can obtain the path loss (PL) or PL range between the reader and multiple AIoT devices. PL refers to the decrease in signal strength caused by attenuation of the propagation medium (such as air, walls, buildings, etc.) during signal propagation. PL is typically used to describe the signal strength attenuation from the transmitter to the receiver. In this case, the reader can determine the transmission power used by the reader to send msg 2 based on the PL or PL range. In this case, the transmission power will not be too low, that is, multiple AIoT devices will be able to receive msg 2. The transmission power will also not be too high, thereby helping to reduce interference generated by multiple msg2 during transmission. By implementing the above method to regulate the transmission power of msg 2 by the reader, communication performance can be improved.

[0158] It should be understood that the information transmission method provided in the embodiments of this application can be applied to the above-described methods. Figures 1 to 3 This application can be applied to any one of the communication scenarios, and it is not limited to other possible communication scenarios.

[0159] It should also be understood that in the embodiments of this application, "including" or "also includes" can be replaced with "is". The above expressions can have the same meaning.

[0160] The information transmission method provided in this application can be executed by a first device or a second device, or by a chip or circuit in the first device or a chip or circuit in the second device. When the executing entity is a chip or circuit, receiving / transmitting can be understood as input / output, that is, the chip or circuit communicates with modules or components in the first device or the second device. Furthermore, the processing performed by a single executing entity can also be divided into multiple executing entities, which can be logically and / or physically separated.

[0161] The information transmission method provided in this application embodiment will be described below using a first device and a second device as examples. The first device may be the sender of msg 2 as described in communication method 600 or communication method 700, such as a reader, UE, BS, relay node, and auxiliary node. The second device may be the receiver of msg 2 as described in communication method 600 or communication method 700, such as an AIoT device, UE, BS, relay node, and auxiliary node.

[0162] Figure 8 This is a schematic diagram of an information transmission method 800 provided in an embodiment of this application. Method 800 includes:

[0163] Step 801: The second device sends first information to the first device, and correspondingly, the first device receives the first information. The first information includes information indicating the PL or PL range between the first device and the second device.

[0164] In this embodiment of the application, the first information may include message 1.

[0165] In this embodiment of the application, message 1 can be understood as msg 1, or it can be understood as a message used for random access. This embodiment of the application does not limit this.

[0166] For example, the first information could be msg 1, such as a random number (e.g., RN16) or the identifier of the second device (e.g., EPC). In this case, the first information can be used for authentication of the second device by the first device. Furthermore, there may be multiple ways for the first information to indicate the PL between the first and second devices. In one possible implementation, the first information can indicate a specific value of the PL between the first and second devices. In another possible implementation, the first information can indicate a range of PLs between the first and second devices. In yet another possible implementation, the first device can receive a pre-configured PL or a PL range-index correspondence with the second device. The first information can indicate the index corresponding to the PL or PL range between the first and second devices. In this case, the first device can obtain the signal strength attenuation between the first and second devices during communication.

[0167] In step 802, the first device transmits the second information using a first transmit power, and correspondingly, the second device receives the second information. The first transmit power is determined based on the power level (PL) or PL range between the first device and the second device.

[0168] In this embodiment of the application, the second information may include message 2. In this embodiment of the application, message 2 can be understood as msg 2, or as a response message to msg 1, or as a response message to a random access message. This embodiment of the application does not limit the interpretation of this message.

[0169] For example, the second information may be msg 2, or it may be an acknowledgment (ACK) of the first information. Based on the PL between the first device and the second device, the first device can determine the transmit power (i.e., the first transmit power) used to send the second information.

[0170] In some embodiments, the first device may send a second message (e.g., msg 2) to a second device using a first transmit power, and there may be multiple second devices. In this case, the first device may determine the first transmit power in different ways. The methods by which the first device determines the first transmit power are described below.

[0171] In one possible implementation, the first transmit power is determined based on the power PL (Power Level) or the maximum value within the PL range between the first device and the plurality of second devices. For example, the second information is an ACK (Acknowledgment Acknowledgment). The first device may send an ACK to all of the plurality of second devices (indicating that all second devices have been authenticated by the first device and can proceed with subsequent data transmission). The first device may also send an ACK to some of the plurality of second devices (indicating that some second devices have been authenticated by the first device and can proceed with subsequent data transmission).

[0172] For example, the first device can send multiple ACKs to multiple second devices through a single message, or it can send multiple ACKs to multiple second devices separately through multiple messages.

[0173] In one possible implementation, the first transmit power used by the first device to send multiple ACKs may be the same value. This first transmit power allows the second device with the highest PL (e.g., the second device furthest from the first device) to also receive the ACK. In this case, computational and scheduling complexity can be reduced.

[0174] In another possible implementation, the first transmit power includes a sub-transmit power equal to the number of the plurality of second devices. The first device transmits second information to the plurality of second devices respectively using the plurality of sub-transmit powers, and correspondingly, the plurality of second devices receive the second information. In this case, the value of the first transmit power used by the first device to transmit the plurality of second information may be different. For example, the first device may select an appropriate sub-transmit power for transmitting the second information based on the PL or PL range between the first device and the plurality of second devices.

[0175] In this case, the first device can adjust the power for different communication links and select different first transmission powers according to different power levels or power ranges, which helps to improve the flexibility of the first device in sending multiple second messages.

[0176] In this scenario, the first device can control the power of the second message. For example, the first transmission power will not be too low, meaning the second message (e.g., msg 2) sent by the first device can be received by the second device. The first transmission power will also not be too high, thus mitigating interference generated by multiple msg 2 messages during transmission. This method allows the first device to regulate the transmission power of msg 2 and subsequent signals, facilitating smooth communication. Furthermore, appropriate transmission power reduces energy consumption during communication, contributing to energy conservation for the first device.

[0177] In some embodiments, prior to step 801, the method 800 further includes:

[0178] In step 803, the first device sends third information to the second device, and the second device receives the third information accordingly. The third information includes information indicating the target received power value of the first device.

[0179] In this embodiment of the application, the third information may include message 0. In this embodiment of the application, message 0 can be understood as msg 0, or it can be understood as a message used for paging. This embodiment of the application does not limit this.

[0180] For example, the third information may be the selection command described in communication method 600, or msg 0 described in communication method 700. If the third information is msg 0 described in communication method 700, the third information may have the function of a paging message. For example, msg 0 as a paging message may include a selection command and a query command. The third information may indicate the target received power value of the first device. For example, if the first device is a UE, the UE may not be able to receive a signal with too weak a power, and the minimum power of the signal that the UE can receive may be the target received power value.

[0181] There can be multiple ways to indicate the target received power value. For example, the third information can indicate the target received power value level of the first device. The target received power value level can be used to indicate a target power value or a power offset. For example, during communication prior to method 800, the second device sent a signal to the first device. The first device can indicate a power offset, causing the second device to increase the power offset based on its original transmission power, allowing subsequent communication to proceed smoothly.

[0182] Furthermore, the third piece of information can also indicate network topology information. Network topology information can indicate the type of devices in the communication system (e.g., the first device is a UE or a BS), or it can indicate the requirements of certain devices for other devices (e.g., the target received power value of the first device). This application embodiment does not limit this.

[0183] In some embodiments, the third information may indicate a pre-configured correspondence between a PL or PL range and an index.

[0184] As previously mentioned, the first information can indicate the index corresponding to the PL or the range of the PL between the first and second devices. Based on the first and third information, the first device can obtain the PL or the PL range between the first and second devices, thereby enabling the regulation of the transmission power of msg 2 and subsequent signals.

[0185] In some embodiments, the third information may further include information indicating the transmission power used by the first device when transmitting the third information.

[0186] In this scenario, due to the presence of the power level (PL), the power of the third information received by the second device will be less than the transmitted power. Based on this power difference, the second device can determine the PL between itself and the first device. Furthermore, the second device can determine the transmitted power based on the target received power value of the first device and the PL between itself and the first device.

[0187] It should be understood that the transmission power information used by the first device when sending the third information is for the peer device (e.g., the second device) to perform PL calculations, and this transmission power does not have any special meaning. Therefore, the transmission power used by the first device when sending the third information (or other information) can be collectively referred to as the transmission power used by the first device to send signals. A similar description applies to the second device, and this application embodiment does not impose any limitations on this.

[0188] For example, in step 801, the second device may transmit the first information to the first device using a second transmit power. As mentioned above, the second transmit power may be determined based on the target receive power value of the first device and the power level (PL) between the second device and the first device. Similar to the first device, when multiple second devices transmit signals, signals with excessive power can interfere with other signals. In this case, the second devices can perform power control on the first information and subsequent communication processes. For example, the first information may be msg 1. In this case, the power value of the second transmit power will not be too low, that is, the msg 1 transmitted by the second device can be received by the first device. The power value of the second transmit power will also not be too high, thereby helping to reduce the interference generated by multiple msg 1 during transmission. Through the above method, the transmission power of the second device for msg 1 and subsequent signals can be adjusted, thereby helping to reduce signal interference during communication and reduce energy consumption during communication.

[0189] After determining the PL between the second device and the first device, the second device can also send a first information instruction to the first device. The specific instruction method can be found in the description of step 801, and will not be repeated here. In this case, the first and second devices complete the PL synchronization, which is also beneficial for the smooth progress of subsequent communication between the two parties.

[0190] In this case, the third information is msg 0 as described in communication method 700, which can be used to indicate the target received power value of the first device, as well as the information on the transmit power used by the first device when transmitting signals, which helps to reduce signaling overhead.

[0191] For example, the third information may also be the selection command described in communication method 600. In this case, after step 803, method 800 further includes:

[0192] In step 804, the first device sends fourth information to the second device, and the second device receives the fourth information accordingly. The fourth information includes information indicating the target received power value of the first device.

[0193] For example, the fourth information may be msg 0 as described in communication method 600 or communication method 700. If the fourth information is msg 0 as described in communication method 600, then the third information may be the selection command as described in communication method 600. If the fourth information is msg 0 as described in communication method 700, then the third and fourth information may be the same information. For example, msg 0 as a paging message may include a selection command and a query command. Similarly, due to the presence of PL, the power of the fourth information received by the second device will be less than the transmission power. The second device can determine the PL between the second device and the first device, and the PL can be indicated to the first device through the first information. The above process can be referred to the description above, and will not be repeated here.

[0194] In summary, the information of the target received power value of the first device and the transmit power used by the first device when transmitting the signal can be jointly carried in msg 0 of communication method 700, that is, the third information and the fourth information are one piece of information (or there is no fourth information), or they can be carried separately in the selection command of communication method 600 and msg 0 of communication method 600 (e.g., query command), that is, the third information and the fourth information are separated, which provides a more flexible choice for the communication process.

[0195] It should be understood that in method 800, the third and fourth information are exemplary descriptions. In actual application scenarios, the information on the target received power value of the first device and the transmission power used by the first device when transmitting the signal can also be carried together in other information, or they can be carried separately in other different information. This application embodiment does not limit this.

[0196] It should also be understood that in method 800, if the third information and the fourth information are the same information (or the fourth information does not exist), step 803 may precede step 801, and step 804 does not exist. If the third information and the fourth information are separate, step 803 may precede step 804, and steps 803 and 804 may precede step 801.

[0197] It should also be understood that the descriptions of the first information, the second information, the third information, and the fourth information in method 800 are also applicable to other methods provided in the embodiments of this application, and the embodiments of this application do not limit them.

[0198] This application embodiment also provides another information transmission method 900, such as... Figure 9 As shown. Method 900 includes:

[0199] Step 901: The second device sends first information to the first device, wherein the time domain resources of the first information are associated with the PL range between the first device and the second device.

[0200] The description of the first information is similar to that of step 801, and the similarities will not be repeated. Unlike step 801, the first information in step 901 does not directly indicate the PL or PL range between the first and second devices. In this case, the temporal resources of the first information are associated with the PL range, and can be used to indirectly indicate the PL range.

[0201] In this case, the first information does not carry information for indicating the PL or PL range between the first and second devices, which helps to save signaling overhead and provides another flexible option for indicating the PL range.

[0202] For example, different PL ranges can be associated with different time-domain resources. For instance, one PL range can correspond to one time-domain resource, one PL range can correspond to multiple time-domain resources, or multiple PL ranges can correspond to one time-domain resource; this embodiment does not impose such limitations. Furthermore, the association between PL ranges and time-domain resources can be predefined by the protocol, and the association can be represented by tables, formulas, or other forms; this embodiment also does not impose such limitations.

[0203] For example, the second device can determine the time-domain resources of the first information (e.g., the time slot in which the second device transmits the first information) based on the time-domain resources of the first information. In this case, the first device can determine the time-domain range between the first device and the second device based on the time-domain resources of the first information. In other words, the first device can obtain information on the signal strength attenuation of the first device and the second device during communication.

[0204] In step 902, the first device transmits the second information using a first transmission power, and correspondingly, the second device receives the second information. The first transmission power is determined based on the PL range.

[0205] The second information is similar to the description of step 802, and the similarities will not be repeated. In some embodiments, the first device may send the second information to the second device using a first transmission power, and there may be multiple second devices. In this case, the first device may use the PL range to determine the first transmission power in different ways, and this process can be referred to the description of method 800, which will not be repeated here. Similarly, the first device can also control the first transmission power through method 900, which will not be repeated here.

[0206] Similar to method 800, in some embodiments, prior to step 901, method 900 further includes:

[0207] In step 903, the first device sends third information to the second device, and the second device receives the third information accordingly. The third information includes information indicating the target received power value of the first device.

[0208] The indication method for the third information and the target received power value can be referred to the description of step 803, and will not be repeated here. Similarly, the third information may also include information indicating the transmit power used by the first device when transmitting the third information. The second device can determine the power level (PL) between the first device and the second device based on the transmit power, and further determine the second transmit power used to transmit the first information. For example, in step 901, the second device may use the second transmit power to transmit the first information to the first device. In this case, the second device can implement power control for the first information (e.g., msg 1). The above process can also be referred to the description of method 800, and will not be repeated here.

[0209] Similar to method 800, the third information can be msg 0 as described in communication method 700. It can be used to indicate both the target received power value of the first device and the transmit power used by the first device when transmitting the signal. The difference lies in that, in method 900, the third information can also be used to indicate the correlation between the time-domain resources of the first information and the PL range. This correlation can be referred to the description in step 901, and will not be repeated here. All of the above information can be carried in the third information, which helps to reduce signaling overhead.

[0210] Similar to method 800, the third information can also be the selection command described in communication method 600. In this case, the third and fourth information are separate, and after step 903, method 900 further includes:

[0211] In step 904, the first device sends fourth information to the second device, and the second device receives the fourth information accordingly. The fourth information includes information indicating the target received power value of the first device.

[0212] The relevant description of the fourth information can be found in method 800, and will not be repeated here. In this case, the target received power value of the first device can be carried in the third information (e.g., the selection command described in communication method 600), and the correlation between the transmit power used by the first device when transmitting the signal and the time domain resources and PL range of the first information can be carried in the fourth information (e.g., msg 0 described in communication method 600), providing a more flexible choice for the communication process.

[0213] It should be understood that in method 900, the third and fourth information are exemplary descriptions. In actual application scenarios, the target received power value of the first device, the transmit power used by the first device when transmitting the signal, and the correlation between the time domain resources of the first information and the PL range can also be carried together in other information, or can be carried separately in other different information. This application embodiment does not limit this.

[0214] It should also be understood that in method 900, if the third information and the fourth information are the same information (or the fourth information does not exist), step 903 may precede step 901, and step 904 does not exist. If the third information and the fourth information are separate, step 903 may precede step 904, and steps 903 and 904 may precede step 901.

[0215] In methods 800 and 900 described above, the second device can indicate PL or PL range information to the first device via the first information. In another implementation, the second device can indicate the transmission power used to transmit the first information. Based on this transmission power, the first device can adjust the transmission power used to transmit the second information. Similarly, the transmission power corresponding to the second information will not be too low or too high, thereby helping to reduce interference caused by multiple second information transmissions. Achieving control over the transmission power of the second information by the first device through the above methods is beneficial for improving communication performance.

[0216] In view of this, embodiments of this application provide yet another information transmission method 1000, such as... Figure 10 As shown. Method 1000 includes:

[0217] Step 1001: The second device sends first information to the first device, the first information including information for instructing the second device on the transmission power used when sending the first information.

[0218] The description of the first information is similar to that of step 801, and the similarities will not be repeated. Unlike step 801, the first information in step 1001 does not carry information related to the power level (PL) or PL range between the first and second devices. Similarly, due to the existence of the PL, the power of the first information received by the first device will be less than the transmitted power. Based on the power difference, the second device can determine the PL between the second device and the first device. In other words, the first device can calculate the signal strength attenuation between the first and second devices during communication. In this case, the first device can obtain the PL in different ways, which improves flexibility.

[0219] There are several ways in which the first information indicates the transmission power. For example, the first information can indicate the specific value of the transmission power used by the second device when transmitting the first information. As another example, before step 1001, the first device also transmitted other signals to the second device. The first information can indicate the carrier signal strength detected by the second device and the signal amplification factor of the second device. Using the carrier signal strength and the signal amplification factor, the first device can also calculate the transmission power.

[0220] In step 1002, the first device transmits the second information using a first transmission power, and correspondingly, the second device receives the second information. The first transmission power is determined based on the transmission power used by the second device when transmitting the first information.

[0221] The description of the second information is similar to that of step 802, and the similarities will not be repeated. As described in step 1001, in method 1000, the power ratio (PL) between the first device and the second device is not determined by the second device, but by the first device. For example, in step 1002, the first transmission power is determined based on the PL between the first device and the second device, and the PL is determined based on the transmission power used by the second device when transmitting the first information.

[0222] Similarly, the first device can send second information to the second device using a first transmit power, and there may be multiple second devices. In this case, the first device can use the PL to determine the first transmit power in different ways, as described in method 800, which will not be repeated here. The first device can also control the first transmit power using method 1000, which will not be repeated here either.

[0223] After determining the PL, the first device can also indicate the PL to the second device. For example, the second information includes information indicating the PL between the first device and the second device. In this case, the first and second devices complete the synchronization of the PL, which also facilitates smooth subsequent communication between the two parties.

[0224] For example, there could be multiple ways for the second information to indicate the PL between the first and second devices. In one possible implementation, the second information could indicate a specific value of the PL between the first and second devices. In another possible implementation, as mentioned earlier, there could be multiple second devices, so the first device could determine multiple PLs. The second information could indicate the maximum value of the PL between the first device and the multiple second devices. In this case, the first device does not need to indicate the corresponding PL in each piece of second information, which helps reduce communication complexity.

[0225] Similar to method 800, in some embodiments, before step 1001, method 1000 further includes:

[0226] In step 1003, the first device sends third information to the second device, and the second device receives the third information accordingly. The third information includes information indicating the target received power value of the first device.

[0227] The indication method for the third information and the target received power value can be referred to in step 803, and will not be repeated here. The second device can adjust its transmission power according to the target power value and PL. In this case, after step 1002, method 1000 further includes:

[0228] In step 1004, the second device transmits the fifth information using a third transmit power, and correspondingly, the first device receives the fifth information. The fifth information includes data, and the third transmit power is determined based on the target receive power value and the power level (PL) between the first device and the second device.

[0229] For example, the fifth information may be msg 3 (e.g., data information or the identifier of the AIoT device) as described in communication method 600 or communication method 700. If the fifth information is msg 3 (e.g., data information) as described in communication method 600, the second information may be msg 1 (e.g., the identifier of the AIoT device) as described in communication method 600. If the fifth information is msg 3 (e.g., the identifier of the AIoT device) as described in communication method 700, the second information may be msg 1 (e.g., a random number RN16) as described in communication method 700.

[0230] Unlike methods 800 and 900, in method 1000, since the second device does not calculate the power PL, but instead receives the power PL information indicated by the first device, the second device does not perform power control on msg 1, but instead performs power control on msg 3 and subsequent signals.

[0231] It should be noted that the second transmission power in methods 800 and 900, and the third transmission power in method 1000, are all transmission powers used by the second device after power regulation. Therefore, the values ​​of the second transmission power and the third transmission power can be the same or different, and the embodiments of this application do not limit this.

[0232] It should also be noted that in method 1000, since it is not necessary to indicate the relationship between time-domain resources and PL range, nor is it necessary to additionally indicate the transmit power used by the first device when transmitting the signal (the first information has already indicated this), the fourth information is not described. In practice, the fourth information may or may not exist.

[0233] It should be understood that in method 1000, step 1003 may precede step 1001, and step 1004 may follow step 1002.

[0234] The above text combines Figures 1 to 10 The information transmission method according to the embodiments of this application is described in detail below, in conjunction with Figures 11 to 13 This application describes in detail the information transmission apparatus according to embodiments thereof.

[0235] Figure 11 An information transmission device 1100 provided in an embodiment of this application is shown. The information transmission device 1100 includes a transceiver unit 1110 and a processing unit 1120.

[0236] In one possible implementation, the information transmission device 1100 is used to execute the steps / processes corresponding to the first device in the method 800 described above.

[0237] The transceiver unit 1110 is configured to: receive first information from the second device, the first information including information indicating the path loss PL or PL range between the first device and the second device, and transmit second information using a first transmit power, the first transmit power being determined based on the PL or the PL range.

[0238] Optionally, the transceiver unit 1110 is further configured to: transmit third information, the third information including information for indicating a target received power value of the first device.

[0239] Optionally, the third information may further include information indicating the transmission power used by the first device when transmitting the third information.

[0240] Optionally, the third information may also include message 0.

[0241] Optionally, the transceiver unit 1110 is further configured to: transmit fourth information, the fourth information including information for indicating the transmission power used by the first device when transmitting the fourth information.

[0242] Optionally, there may be multiple second devices, and the first transmit power is determined based on the maximum value of the PL or PL range between the first device and the multiple second devices.

[0243] Optionally, the number of the second devices is multiple, and the first transmission power includes multiple sub-transmission powers equal to the number of the multiple second devices, wherein the multiple sub-transmission powers are determined based on the PL or PL range between the first device and the multiple second devices.

[0244] Optionally, the second information includes confirmation information of the first information.

[0245] Optionally, the first information may also include a random number or the identifier of the second device.

[0246] Optionally, the first information may further include message 1 and / or the second information may include message 2.

[0247] In another possible implementation, the information transmission device 1100 is used to execute the steps / processes corresponding to the first device in the method 900 described above.

[0248] The transceiver unit 1110 is configured to: receive first information from a second device, wherein the time domain resources of the first information are associated with the PL range between the first device and the second device; and transmit second information using a first transmit power, wherein the first transmit power is determined based on the PL range.

[0249] Optionally, the transceiver unit 1110 is further configured to: transmit third information, the third information including information for indicating a target received power value of the first device.

[0250] Optionally, the third information may further include information indicating the transmission power used by the first device when transmitting the third information.

[0251] Optionally, the third information may further include information indicating the association between the time-domain resources of the first information and the PL range.

[0252] Optionally, the third information may also include message 0.

[0253] Optionally, the transceiver unit 1110 is further configured to: transmit fourth information, the fourth information including information for indicating the transmission power used by the first device when transmitting the fourth information.

[0254] Optionally, the fourth information may further include information indicating the association between the time-domain resources of the first information and the PL range.

[0255] Optionally, the number of the second devices may be multiple, and the first transmit power is determined based on the maximum value in the PL range between the first device and the multiple second devices.

[0256] Optionally, the number of the second devices is multiple, and the first transmit power includes multiple sub-transmit powers equal to the number of the multiple second devices, wherein the multiple sub-transmit powers are determined based on the PL range between the first device and the multiple second devices.

[0257] Optionally, the second information includes confirmation information of the first information.

[0258] Optionally, the first information may also include a random number or the identifier of the second device.

[0259] Optionally, the first information includes message 1 and / or the second information includes message 2.

[0260] In another possible implementation, the information transmission device 1100 is used to execute the steps / processes corresponding to the first device in the method 1000 described above.

[0261] The transceiver unit 1110 is configured to: receive first information from the second device, the first information including information for instructing the second device to use the transmission power when sending the first information, and to send the second information using the first transmission power, the first transmission power being determined based on the transmission power used by the second device when sending the first information.

[0262] Optionally, the first transmission power is determined based on the power level (PL) between the first device and the second device, wherein the PL is determined based on the transmission power used by the second device when transmitting the first information.

[0263] Optionally, the number of the second devices may be multiple, and the first transmit power is determined based on the maximum value of the power PL among the first device and the multiple second devices.

[0264] Optionally, the number of the second devices is multiple, and the first transmit power includes multiple sub-transmit powers equal to the number of the multiple second devices, wherein the multiple sub-transmit powers are determined based on the PL between the first device and the multiple second devices respectively.

[0265] Optionally, the second information includes information for indicating the PL between the first device and the second device.

[0266] Optionally, the transceiver unit 1110 is further configured to: transmit third information, the third information including information for indicating a target received power value of the first device.

[0267] Optionally, the third information includes message 0.

[0268] Optionally, the information used to indicate the transmission power used by the second device when transmitting the first information includes: the carrier signal strength detected by the second device and the signal amplification factor of the second device.

[0269] Optionally, the second information includes confirmation information of the first information.

[0270] Optionally, the first information may also include a random number or the identifier of the second device.

[0271] Optionally, the transceiver unit 1110 is further configured to: receive fifth information, the fifth information including data.

[0272] Optionally, the first information may further include message 1 and / or the second information may include message 2.

[0273] In another possible implementation, the information transmission device 1100 is used to execute the steps / processes corresponding to the second device in the methods 800, 900 or 1000 described above.

[0274] The transceiver unit 1110 is configured to: transmit first information, the first information including information for indicating the PL or PL range between the first device and the second device, or the first information including information for indicating the transmit power used by the second device when transmitting the first information, or the time domain resources of the first information being associated with the PL range between the first device and the second device.

[0275] Optionally, the first information includes information indicating the power level (PL) or PL range between the first device and the second device. The transceiver unit 1110 is further configured to: receive third information, the third information including information indicating a target receive power value for the first device. The transceiver unit 1110 is also configured to: transmit the first information using a second transmit power, the second transmit power being determined based on the target receive power value and the PL or PL range between the first device and the second device.

[0276] Optionally, the third information may further include information indicating the transmission power used by the first device when transmitting the third information.

[0277] Optionally, the transceiver unit 1110 is further configured to: receive fourth information, the fourth information including information for indicating the transmission power used by the first device when transmitting the fourth information.

[0278] Optionally, the third information may also include message 0.

[0279] Optionally, the time-domain resources of the first information are associated with the PL range between the first device and the second device. The transceiver unit 1110 is further configured to: receive third information, the third information including information indicating a target receive power value for the first device. The transceiver unit 1110 is further configured to: transmit the first information using a second transmit power, the second transmit power being determined based on the target receive power value and the PL range between the first device and the second device.

[0280] Optionally, the third information may further include information indicating the transmission power used by the first device when transmitting the third information.

[0281] Optionally, the third information may further include information indicating the association between the time-domain resources of the first information and the PL range.

[0282] Optionally, the transceiver unit 1110 is further configured to: receive fourth information, the fourth information including information for indicating the transmission power used by the first device when transmitting the fourth information.

[0283] Optionally, the fourth information may further include information indicating the association between the time-domain resources of the first information and the PL range.

[0284] Optionally, the third information may also include message 0.

[0285] Optionally, the first information includes information indicating the transmit power used by the second device when transmitting the first information. The transceiver unit 1110 is further configured to: receive second information, the second information including information indicating the power level (PL) between the first device and the second device.

[0286] Optionally, the transceiver unit 1110 is further configured to: receive third information, the third information including information indicating a target receive power value for the first device; and transmit data using a third transmit power, the third transmit power being determined based on the target receive power value and the power level (PL) between the first device and the second device.

[0287] Optionally, the third information may also include message 0.

[0288] Optionally, the information used to indicate the transmission power used by the second device when transmitting the first information includes: the carrier signal strength detected by the second device and the signal amplification factor of the second device.

[0289] Optionally, the second information includes confirmation information of the first information.

[0290] Optionally, the second information also includes message 2.

[0291] Optionally, the first information may also include a random number or the identifier of the second device.

[0292] Optionally, the first information may also include message 1.

[0293] It should be understood that the information transmission device 1100 here is embodied in the form of a functional unit. The term "unit" here can refer to an application-specific integrated circuit (ASIC), electronic circuitry, a processor (e.g., a shared processor, a proprietary processor, or a group processor, etc.) and memory for executing one or more software or firmware programs, integrated logic circuitry, and / or other suitable components supporting the described functions. In an alternative example, those skilled in the art will understand that the information transmission device 1100 can be specifically either the first device or the second device in the above embodiments. The information transmission device 1100 can be used to execute the various processes and / or steps corresponding to either the first device or the second device in the above method embodiments; to avoid repetition, these will not be described further here.

[0294] The information transmission device 1100 of each of the above-described schemes has the function of implementing the corresponding steps executed by either the first device or the second device in the above methods; the function can be implemented by hardware or by hardware executing corresponding software. The hardware or software includes one or more modules corresponding to the above functions. For example, the transceiver unit 1110 can be replaced by a receiver and a transmitter, and other units, such as processing units, can be replaced by a processor, respectively executing the transceiver operations and related processing operations in each method embodiment.

[0295] In the embodiments of this application, Figure 11 The information transmission device 1100 can also be a chip or a chip system, such as a system on a chip (SoC). Correspondingly, the transceiver unit 1110 can be the transceiver circuit of the chip, which is not limited here.

[0296] Figure 12 Another information transmission device 1200 provided in this application embodiment is illustrated. The information transmission device 1200 includes a processor 1210, a transceiver 1220, and a memory 1230. The processor 1210, transceiver 1220, and memory 1230 communicate with each other via an internal connection path. The memory 1230 is used to store instructions, and the processor 1210 is used to execute the instructions stored in the memory 1230 to control the transceiver 1220 to transmit and / or receive signals.

[0297] It should be understood that the information transmission device 1200 may specifically be any one of the first device or the second device in the above embodiments, and may be used to execute the various steps and / or processes corresponding to any one of the first device or the second device in the above method embodiments. Optionally, the memory 1230 may include a read-only memory and a random access memory, and provide instructions and data to the processor. A portion of the memory may also include non-volatile random access memory. For example, the memory may also store device type information. The processor 1210 may be used to execute instructions stored in the memory, and when the processor 1210 executes instructions stored in the memory, the processor 1210 is used to execute the various steps and / or processes of the above method embodiments corresponding to any one of the first device or the second device. The transceiver 1220 may include a transmitter and a receiver, the transmitter may be used to implement the various steps and / or processes corresponding to the transceiver for performing a sending action, and the receiver may be used to implement the various steps and / or processes corresponding to the transceiver for performing a receiving action.

[0298] Figure 13This application illustrates another information transmission device 1300 provided in an embodiment of the present application. The information transmission device 1300 includes a processor 1310, a memory 1320, a network interface 1330, an input / output interface 1340, and a bus 1350. The processor 1310 is used to execute instructions and process data; the memory 1320 can store content including but not limited to: data files, program code, and operating system; the network interface 1330 (such as a network card) sends and receives messages, enabling the computer to connect to a network (such as a local area network or the Internet) for communication; the input / output interface 1340 is used to connect and manage data exchange between the computer and external devices: input interfaces (such as keyboards and mice) allow users to input data into the computer, while output interfaces (such as monitors and printers) present the processed data to the user. In addition, there are interfaces responsible for connecting storage devices (such as USB ports and hard drive interfaces); the bus 1350 is a set of electrical signal lines used to transmit data, addresses, and control signals within the computer. The bus 1350 connects the processor 1310, memory 1320, network interface 1330, and input / output interface 1340, enabling them to communicate with each other.

[0299] It should be understood that the information transmission device 1300 may be specifically either the first device or the second device in the above embodiments, and may be used to execute the various steps and / or processes corresponding to either the first device or the second device in the above method embodiments.

[0300] It should be understood that, in the embodiments of this application, the processor of the above-described device can be a central processing unit (CPU), which can also be other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor can be a microprocessor or any conventional processor, etc.

[0301] In implementation, each step of the above method can be completed by integrated logic circuits in the processor's hardware or by instructions in software. The steps of the method disclosed in the embodiments of this application can be directly manifested as execution by a hardware processor, or as a combination of hardware and software units within the processor. The software units can reside in random access memory, flash memory, read-only memory, programmable read-only memory, electrically erasable programmable memory, registers, or other mature storage media in the art. This storage medium is located in memory, and the processor executes the instructions in the memory, combining them with its hardware to complete the steps of the above method. To avoid repetition, detailed descriptions are omitted here.

[0302] This application also provides a computer-readable storage medium for storing a computer program for implementing the methods corresponding to either the first device or the second device in the above embodiments.

[0303] This application also provides a computer program product, which includes a computer program (also referred to as code or instructions), which, when run on a computer, allows the computer to execute the method corresponding to either the first device or the second device shown in the above embodiments.

[0304] In the embodiments of this application, the terms "first" and "second" are used to distinguish identical or similar items with essentially the same function and effect. Those skilled in the art will understand that the terms "first" and "second" do not limit the quantity or execution order, and that the terms "first" and "second" do not necessarily imply that they are different.

[0305] Furthermore, "at least one" refers to one or more, while "more than one" refers to two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can mean: A alone, A and B simultaneously, or B alone, where A and B can be singular or plural. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship. "At least one of the following" or similar expressions refer to any combination of these items, including any combination of single or plural items. For example, at least one of a, b, and / or c can mean: a, or b, or c, or a and b, or a and c, or b and c, or a, b, and c, where a, b, and c can be single or multiple.

[0306] Those skilled in the art will recognize that the method steps and units described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of both. To clearly illustrate the interchangeability of hardware and software, the steps and components of each embodiment have been generally described in terms of functionality in the foregoing description. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0307] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0308] In the embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the couplings or direct couplings or communication connections shown or discussed may be indirect couplings or communication connections through some interfaces, apparatuses, or units, or they may be electrical, mechanical, or other forms of connection.

[0309] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of the embodiments of this application, depending on actual needs.

[0310] 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 unit can be implemented in hardware or as a software functional unit.

[0311] 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 computer-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.) 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.

[0312] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this application, and these modifications or substitutions should all be covered within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. An information transmission method, characterized in that, Applied to a first device, the method includes: Receive first information from the second device, the first information including information for indicating the path loss PL or PL range between the first device and the second device; The second information is transmitted using a first transmission power, which is determined based on the PL or the PL range.

2. The method according to claim 1, characterized in that, The method further includes: Send a third message, which includes information indicating the target received power value of the first device.

3. The method according to claim 2, characterized in that, The third information also includes information indicating the transmission power used by the first device when transmitting the third information.

4. The method according to claim 1 or 2, characterized in that, The method further includes: Send a fourth message, the fourth message including information indicating the transmission power used by the first device when sending the fourth message.

5. The method according to any one of claims 1 to 4, characterized in that, The number of the second devices is multiple, and the first transmission power is determined based on the maximum value of the PL or PL range between the first device and the multiple second devices.

6. The method according to any one of claims 1 to 4, characterized in that, The number of the second devices is multiple, and the first transmission power includes multiple sub-transmission powers equal to the number of the multiple second devices. The multiple sub-transmission powers are determined based on the PL or PL range between the first device and the multiple second devices.

7. The method according to any one of claims 1 to 6, characterized in that, The second information includes confirmation information for the first information.

8. An information transmission method, characterized in that, Applied to a first device, the method includes: Receive first information from the second device, wherein the time-domain resources of the first information are associated with the PL range between the first device and the second device; The second information is transmitted using a first transmission power, which is determined based on the PL range.

9. The method according to claim 8, characterized in that, The method further includes: Send a third message, which includes information indicating the target received power value of the first device.

10. The method according to claim 9, characterized in that, The third information also includes information indicating the transmission power used by the first device when transmitting the third information.

11. The method according to claim 9 or 10, characterized in that, The third information also includes information indicating the association between the time-domain resources of the first information and the PL range.

12. The method according to claim 8 or 9, characterized in that, The method further includes: Send a fourth message, the fourth message including information indicating the transmission power used by the first device when sending the fourth message.

13. The method according to claim 12, characterized in that, The fourth information also includes information indicating the association between the time-domain resources of the first information and the PL range.

14. The method according to any one of claims 8 to 13, characterized in that, The number of the second devices is multiple, and the first transmission power is determined based on the maximum value in the PL range between the first device and the multiple second devices.

15. The method according to any one of claims 8 to 13, characterized in that, The number of the second devices is multiple, and the first transmission power includes multiple sub-transmission powers equal to the number of the multiple second devices. The multiple sub-transmission powers are determined based on the PL range between the first device and the multiple second devices.

16. The method according to any one of claims 8 to 15, characterized in that, The second information includes confirmation information for the first information.

17. An information transmission method, characterized in that, Applied to a first device, the method includes: Receive first information from a second device, the first information including information for instructing the second device on the transmission power used when sending the first information; The second information is transmitted using a first transmission power, which is determined based on the transmission power used by the second device when transmitting the first information.

18. The method according to claim 17, characterized in that, The first transmission power is determined based on the power level (PL) between the first device and the second device, and the PL is determined based on the transmission power used by the second device when transmitting the first information.

19. The method according to claim 18, characterized in that, The number of the second devices is multiple, and the first transmission power is determined based on the maximum value of the power PL among the first device and the multiple second devices.

20. The method according to claim 18, characterized in that, The number of the second devices is multiple, and the first transmission power includes multiple sub-transmission powers equal to the number of the multiple second devices. The multiple sub-transmission powers are determined based on the power PL between the first device and the multiple second devices.

21. The method according to any one of claims 18 to 20, characterized in that, The second information includes information for indicating the PL between the first device and the second device.

22. The method according to any one of claims 17 to 21, characterized in that, The method further includes: Send a third message, which includes information indicating the target received power value of the first device.

23. The method according to any one of claims 17 to 22, characterized in that, The information used to indicate the transmission power used by the second device when transmitting the first information includes: the carrier signal strength detected by the second device and the signal amplification factor of the second device.

24. The method according to any one of claims 17 to 23, characterized in that, The second information includes confirmation information for the first information.

25. An information transmission method, characterized in that, Applied to a second device, the method includes: Sending first information, the first information including information for indicating the PL or PL range between the first device and the second device, or the first information including information for indicating the transmit power used by the second device when sending the first information, or the time domain resources of the first information being associated with the PL range between the first device and the second device.

26. The method according to claim 25, characterized in that, The first information includes information indicating the PL or PL range between the first device and the second device; The method further includes: Receive third information, the third information including information for indicating a target received power value for the first device; The sending of the first information includes: The first information is transmitted using a second transmit power, which is determined based on the target receive power value and the PL or PL range between the first device and the second device.

27. The method according to claim 26, characterized in that, The third information also includes information indicating the transmission power used by the first device when transmitting the third information.

28. The method according to claim 26, characterized in that, The method further includes: Receive fourth information, the fourth information including information for indicating the transmission power used by the first device when transmitting the fourth information.

29. The method according to claim 25, characterized in that, The temporal domain resources of the first information are associated with the PL range between the first device and the second device; The method further includes: Receive third information, the third information including information for indicating a target received power value for the first device; The sending of the first information includes: The first information is transmitted using a second transmit power, which is determined based on the target receive power value and the PL range between the first device and the second device.

30. The method according to claim 29, characterized in that, The third information also includes information indicating the transmission power used by the first device when transmitting the third information.

31. The method according to claim 30, characterized in that, The third information also includes information indicating the association between the time-domain resources of the first information and the PL range.

32. The method according to claim 29, characterized in that, The method further includes: Receive fourth information, the fourth information including information for indicating the transmission power used by the first device when transmitting the fourth information.

33. The method according to claim 32, characterized in that, The fourth information also includes information indicating the association between the time-domain resources of the first information and the PL range.

34. The method according to claim 25, characterized in that, The first information includes information for instructing the second device on the transmission power used when transmitting the first information; The method further includes: Receive second information, the second information including information for indicating the PL between the first device and the second device.

35. The method according to claim 34, characterized in that, The method further includes: Receive third information, the third information including information for indicating a target received power value for the first device; Data is transmitted using a third transmit power, which is determined based on the target receive power value and the power level (PL) between the first device and the second device.

36. The method according to claim 34 or 35, characterized in that, The information used to indicate the transmission power used by the second device when transmitting the first information includes: the carrier signal strength detected by the second device and the signal amplification factor of the second device.

37. The method according to any one of claims 34 to 36, characterized in that, The second information includes confirmation information for the first information.

38. An information transmission device, characterized in that, include: Units for implementing the method according to any one of claims 1 to 37.

39. An information transmission device, characterized in that, include: A processor coupled to a memory for storing programs or instructions that, when executed by the processor, cause the apparatus to perform the information transmission method as described in any one of claims 1 to 37.

40. An information transmission system, characterized in that, include: A first device and a second device, wherein the first device is used to perform the information transmission method as described in any one of claims 1 to 24, and the second device is used to perform the information transmission method as described in any one of claims 25 to 37.

41. A computer-readable storage medium, characterized in that, The computer-readable storage medium includes a program or instructions that, when executed, cause the information transmission method as described in any one of claims 1 to 37 to be implemented.

42. A computer program product, characterized in that, The computer program product includes a program or instructions that, when executed, cause the information transmission method as described in any one of claims 1 to 37 to be implemented.

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