Signal transmission method and apparatus, and signal reception method and apparatus

Abstract

Provided in the present application are a signal transmission method and apparatus, and a signal reception method and apparatus. The signal transmission method comprises: a first device transmitting a first signal to a second device at a first transmission power; and transmitting a second signal to a network device at a second transmission power.

Description

Signal transmission method, signal reception method and device Technical Field

[0001] This application relates to the field of communication technology. Background Technology

[0002] From the early days of 2G to 4G, cellular mobile communication systems primarily served mobile phones—human-held mobile terminal devices. With the rapid development of mobile internet and the Internet of Things (IoT), from the later stages of 4G to the present, the evolution of cellular mobile communication technology has considered and supported increasingly diverse IoT application scenarios. Correspondingly, more types of IoT devices have been supported and implemented in actual network deployments and service applications, such as enhanced machine-type communication (eMTC) devices, narrowband Internet of Things (NB-IoT) devices, and reduced-capability (RedCap) devices. With the increasing diversity of IoT terminal device types, cellular mobile systems have gained increasingly stronger capabilities in providing services and offering services to vertical industries.

[0003] However, among the massive number of IoT devices, the area of ​​large-scale and lower-cost IoT terminal devices remains a gap in cellular mobile communication systems. To provide more robust, reliable, and complete IoT application solutions, how to support lower-cost IoT terminal devices within the 3GPP cellular mobile system has become an urgent problem to be solved.

[0004] It should be noted that the above introduction to the technical background is only for the purpose of providing a clear and complete explanation of the technical solutions of this application and facilitating understanding by those skilled in the art. It should not be assumed that these technical solutions are known to those skilled in the art simply because they have been described in the background section of this application.

[0005] Summary of the Invention

[0006] Radio Frequency Identification (RFID) systems are solutions for the large-scale, lower-cost Internet of Things (IoT) terminal devices. RFID systems have a wide range of applications. The advantages of RFID systems include low tag cost and low price. RFID tags are small, with fewer restrictions on the size and material of the items they can be used with, making them easy to apply to various item management and tracking scenarios. One disadvantage of RFID systems is the limited information reading range (based on the wireless signal communication range) of RFID tags. Using manual handheld tag readers can result in high labor costs, which may be the main expense. Using dedicated RFID ports or gateways to read and manage RFID tags requires higher deployment costs. Furthermore, the simple logical architecture of RFID systems makes it difficult to effectively coordinate with interference in radio wave transmission, resulting in generally lower system capacity and spectrum utilization efficiency.

[0007] Compared to RFID systems, 3GPP's 5G systems support tag-based terminal devices, allowing for the reuse of existing base stations and leveraging existing cellular networks to support industry applications based on this type of terminal, thereby effectively reducing deployment and usage costs. 3GPP's 5G systems can provide reliable authentication, network coordination, and accurate and stable terminal device management mechanisms, and can also optimize the network to improve system capacity and spectrum utilization efficiency.

[0008] Tag-enabled terminal devices can also be called environmental IoT devices, such as A-IoT (Ambient Internet of Things) devices, passive IoT devices, or simply tag-based devices. The device that communicates directly with the A-IoT device is called a reader or interrogator. Readers can reside in network devices, allowing direct communication between the A-IoT device and the 5G network without the need for terminal devices to transmit information between them. Alternatively, readers can reside within terminal devices, enabling indirect network communication in environmental IoT. This means that in the communication between the environmental IoT device and the 5G network, a terminal device supporting environmental IoT facilitates the transmission of information between them.

[0009] The inventors discovered that, as a new type of IoT terminal in 5G systems, tagged terminal devices (Ambient IoT devices) are severely limited in cost. Their hardware capabilities are significantly weaker than those of ordinary smartphones and other IoT devices supported by existing cellular mobile communication systems. For example, tagged terminal devices may lack a stable power supply (e.g., using ambient energy harvesting instead of conventional batteries), have narrower bandwidth, limited accuracy of internal crystal oscillators due to cost constraints, and limited signal processing capabilities.

[0010] Due to the limited capabilities of tag-based terminal devices, improving the coverage of tag-based terminal device systems is a pressing issue. Furthermore, while tag-based terminal devices are mobile, the mobility of network devices acting as readers is very poor, limiting operations such as inventory management and command transmission. To address these problems, an intermediate node is added between the network device and the tag-based terminal devices, thereby improving network coverage while also accommodating the mobility characteristics of the tag-based terminal devices. For scenarios requiring an intermediate node in the topology, determining the appropriate signal power for the intermediate node to send to the tag-based terminal devices is a crucial problem that needs to be solved.

[0011] To address at least one of the above-mentioned problems, embodiments of this application provide a signal transmission method, a signal reception method, an apparatus, and a communication system.

[0012] According to one aspect of the embodiments of this application, a signal transmitting device is provided, applied to a first device, comprising:

[0013] A transmitter that transmits a first signal to a second device at a first transmission power; and,

[0014] A second signal is sent to the network device at a second transmission power.

[0015] According to another aspect of the embodiments of this application, a signal receiving device is provided, applied to a second device, comprising:

[0016] A receiver that receives a first signal transmitted by a first device, wherein the first signal is transmitted by the first device at a first transmission power.

[0017] One of the beneficial effects of this application's embodiments is that it can avoid interference with NR / LTE and other communications caused by excessive signal power sent by intermediate nodes to tag-type terminal devices, and by controlling the transmission power of intermediate nodes to tag-type terminal devices, it can enhance the coverage of tag-type terminal devices at greater distances, enabling them to receive signals sent by intermediate nodes.

[0018] Specific embodiments of this application are disclosed in detail with reference to the following description and accompanying drawings, indicating how the principles of this application can be adopted. It should be understood that the embodiments of this application are not limited in scope. Within the spirit and scope of the appended claims, embodiments of this application include many changes, modifications, and equivalents.

[0019] Features described and / or illustrated for one embodiment may be used in the same or similar manner in one or more other embodiments, combined with or replacing features in other embodiments.

[0020] It should be emphasized that the term "including / comprises" as used herein refers to the presence of a feature, whole, step, or component, but does not exclude the presence or addition of one or more other features, wholes, steps, or components. Attached Figure Description

[0021] The elements and features described in one drawing or embodiment of this application may be combined with elements and features shown in one or more other drawings or embodiments. Furthermore, in the drawings, similar reference numerals denote corresponding parts in several drawings and can be used to indicate corresponding parts used in more than one embodiment.

[0022] The accompanying drawings, which form part of the specification, are used to provide a further understanding of the embodiments of this application and illustrate the implementation methods of this application, together with the textual description, to explain the principles of this application. Obviously, the drawings described below are merely some embodiments of this application, and those skilled in the art can obtain other drawings based on these drawings without creative effort. In the drawings:

[0023] Figures 1A to 1C are schematic diagrams of a communication system according to an embodiment of this application;

[0024] Figure 2 is a schematic diagram of a signal transmission method according to an embodiment of this application;

[0025] Figure 3 is a schematic diagram of the signal transmission process according to an embodiment of this application;

[0026] Figure 4 is a schematic diagram of the signal transmission method according to an embodiment of this application;

[0027] Figure 5 is a schematic diagram of the signal transmission method according to an embodiment of this application;

[0028] Figure 6 is a schematic diagram of the signal transmission method according to an embodiment of this application;

[0029] Figure 7 is a schematic diagram of the signal transmission method according to an embodiment of this application;

[0030] Figure 8 is a schematic diagram of a signal transmitting device according to an embodiment of this application;

[0031] Figure 9 is a schematic diagram of the signal receiving method according to an embodiment of this application;

[0032] Figure 10 is a schematic diagram of a signal receiving device according to an embodiment of this application;

[0033] Figure 11 is a schematic diagram of the configuration of the first device according to an embodiment of this application;

[0034] Figure 12 is a schematic diagram of the configuration of the second device or network device according to an embodiment of this application. Detailed Implementation

[0035] Referring to the accompanying drawings, the foregoing and other features of this application will become apparent from the following description. Specific embodiments of this application are specifically disclosed in the description and drawings, illustrating partial implementations in which the principles of this application may be employed. It should be understood that this application is not limited to the described embodiments; rather, it includes all modifications, variations, and equivalents falling within the scope of the appended claims.

[0036] In the embodiments of this application, the terms "first," "second," etc., are used to distinguish different elements by name, but do not indicate the spatial arrangement or chronological order of these elements, and these elements should not be limited by these terms. The term "and / or" includes any one or more of the terms listed in association and all combinations thereof. The terms "comprising," "including," "having," etc., refer to the presence of the stated features, elements, components, or assemblies, but do not exclude the presence or addition of one or more other features, elements, components, or assemblies.

[0037] In the embodiments of this application, the singular forms "a," "the," etc., including the plural forms, should be broadly understood as "a kind" or "a class" rather than limited to the meaning of "an." Furthermore, the term "the" should be understood to include both the singular and plural forms, unless the context explicitly indicates otherwise. Additionally, the term "according to" should be understood as "at least partially based on…," and the term "based on" should be understood as "at least partially based on…," unless the context explicitly indicates otherwise.

[0038] In the embodiments of this application, the term "communication network" or "wireless communication network" may refer to a network that conforms to any of the following communication standards, such as Long Term Evolution (LTE), LTE-Advanced (LTE-A), Wideband Code Division Multiple Access (WCDMA), High-Speed ​​Packet Access (HSPA), etc.

[0039] Furthermore, communication between devices in a communication system can be carried out according to communication protocols at any stage, including but not limited to the following communication protocols: 1G (generation), 2G, 2.5G, 2.75G, 3G, 4G, 4.5G and future 5G, New Radio (NR), 6G, etc., and / or other currently known or future communication protocols.

[0040] In the embodiments of this application, the term "network device" refers, for example, to a device in a communication system that connects a terminal device to a communication network and provides services to that terminal device. Network devices may include, but are not limited to, the following devices: base station (BS), access point (AP), transceiver node (TRP), broadcast transmitter, mobile management entity (MME), gateway, server, radio network controller (RNC), base station controller (BSC), etc.

[0041] Base stations can include, but are not limited to: NodeBs (or NBs), evolved NodeBs (eNodeBs or eNBs), and 5G base stations (gNBs), IAB hosts, etc. They can also include Remote Radio Heads (RRHs), Remote Radio Units (RRUs), relays, or low-power nodes (e.g., femto, pico, etc.). The term "base station" can include some or all of their functions, and each base station can provide communication coverage to a specific geographic area. The term "cell" can refer to a base station and / or its coverage area, depending on the context in which the term is used.

[0042] In the embodiments of this application, the term "User Equipment" (UE) refers to a device that accesses a communication network and receives network services through a network device, and can also be called "Terminal Equipment" (TE). Terminal equipment can be fixed or mobile, and can also be called a mobile station (MS), terminal, user, subscriber station (SS), access terminal (AT), station, mobile terminal (MT), etc.

[0043] Terminal devices may include, but are not limited to, the following devices: cellular phones, personal digital assistants (PDAs), wireless modems, wireless communication devices, handheld devices, machine-type communication devices, laptops, cordless phones, smartphones, smartwatches, digital cameras, etc.

[0044] For example, in scenarios such as the Internet of Things (IoT), terminal devices can also be machines or devices for monitoring or measurement, including but not limited to: machine-type communication (MTC) terminals, vehicle-mounted communication terminals, device-to-device (D2D) terminals, machine-to-machine (M2M) terminals, tag-type terminal devices, and so on.

[0045] Furthermore, the terms "network side" or "network equipment side" refer to one side of the network, which can be a base station or include one or more network devices as described above. The terms "user side," "terminal side," or "terminal equipment side" refer to the side of the user or terminal, which can be a UE or include one or more terminal devices as described above. Unless otherwise specified, "equipment" can refer to either network equipment or terminal equipment.

[0046] In the following description, without causing confusion, the terms “uplink control signal” and “uplink control information (UCI)” or “physical uplink control channel (PUCCH)” are used interchangeably, as are the terms “uplink data signal” and “uplink data information” or “physical uplink shared channel (PUSCH)”.

[0047] The terms “downlink control signal” and “downlink control information (DCI)” or “physical downlink control channel (PDCCH)” are interchangeable, as are the terms “downlink data signal” and “downlink data information (PDSCH)” or “physical downlink shared channel (PDSCH)”.

[0048] A signal can also be called information or a channel. Sending / receiving a transmission / signal / channel / information on a resource can be understood as using that resource to send / receive that transmission / signal / channel / information. However, in the following description, "signal," "channel," and "information" may be used interchangeably without causing confusion.

[0049] In the embodiments of this application, higher-layer signaling may be, for example, Radio Resource Control (RRC) signaling; RRC signaling may include, for example, RRC messages, such as broadcast / public RRC messages / signaling (e.g., Master Information Block (MIB), system information), dedicated RRC messages / signaling; or RRC information elements (RRC IE); or information fields (or information fields included in information fields) included in RRC messages or RRC information elements. Higher-layer signaling may also be, for example, Medium Access Control (MAC) signaling; or MAC control elements (MAC CE). For example, it may be adaptation layer signaling; in addition, the lower layer may also be replaced by the physical layer, but this application is not limited thereto. The information or signal names used in the embodiments of this application are only examples and may be other names, and the embodiments of this application are not intended to limit them.

[0050] In the embodiments of this application, "multiple" refers to at least two, or two or more.

[0051] In this application embodiment, "predefined" refers to what is specified by the protocol or determined according to the rules specified by the protocol, and does not require additional configuration. "Configuration / instruction" refers to what the network device directly or indirectly configures / instructs through higher-layer signaling and / or physical layer signaling. Configuration / instruction can be achieved by introducing higher-layer parameters into the higher-layer signaling. Higher-layer parameters refer to information fields and / or information elements / information units / information cells (IEs) in the higher-layer signaling. Physical layer signaling refers to, for example, control information (DCI) carried by the physical downlink control channel or control information carried by the sequence, but is not limited to these.

[0052] For ease of description, the following description uses a base station as an example of an access network device. In the following notes, without causing confusion, "if…", "in the case of…", and "when…" can be used interchangeably. "Resource block", "RB" and "PRB", "Physical Resource Block", and "Common Resource Block (CRB)" are interchangeable. "Configuration / Instruction / Provide / Given" are interchangeable. "Index" and "ID" are interchangeable.

[0053] The following examples illustrate the scenarios of embodiments of this application, but this application is not limited thereto.

[0054] Figures 1A to 1C are schematic diagrams of a communication system according to an embodiment of this application, illustrating the case of a terminal device and a network device as examples. As shown in Figures 1A to 1C, the communication system 100 may include a network device 103 and an A-IoT device 102. For simplicity, Figures 1A to 1C are illustrated using only one A-IoT device and one network device as examples, but the embodiments of this application are not limited thereto.

[0055] Network devices can communicate directly with A-IoT devices, as shown in Figure 1A, by sending signals directly to or receiving signals directly from A-IoT devices; network devices can also communicate through intermediate nodes, as shown in Figure 1B, by using intermediate node 101 to send signals to or receive signals from A-IoT devices; network devices can also send signals to or receive signals from A-IoT devices with the assistance of auxiliary node 104 (which can be a repeater, IAB node, UE, or relay, etc.), as shown in Figure 1C.

[0056] In this embodiment, the network device sending signals / information / configurations to the A-IoT device, or the A-IoT device receiving signals / information / configurations from the network device, can be done in several ways: directly from the network device to the A-IoT device and received by the terminal device; via an intermediate node; with the assistance of an auxiliary node; or through other methods. Unless otherwise specified, this embodiment is not limited to these methods.

[0057] In this embodiment, the A-IoT device sending signals / information to the network device or the network device receiving signals / information from the A-IoT device can be done in several ways: the A-IoT device sends the signal and the network device receives it directly; the A-IoT device sends the signal and the network device receives it via an intermediate node; the A-IoT device sends the signal and the network device receives it with the help of an auxiliary node; or the A-IoT device sends the signal and the network device receives it through other methods. Unless otherwise specified, this embodiment is not limited to these methods.

[0058] This application proposes a method for determining the transmission power of intermediate nodes in the topology shown in Figure 1B when sending signals to tag-type terminal devices. Various embodiments of this application are described below with reference to the accompanying drawings. These embodiments are merely exemplary and not intended to limit the scope of this application.

[0059] First aspect of the embodiments

[0060] This application provides a signal transmission method, which will be described from the perspective of a first device.

[0061] Figure 2 is a schematic diagram of a signal transmission method according to an embodiment of this application. As shown in Figure 2, the method includes:

[0062] 201, the first device transmits a first signal to the second device at a first transmission power; and,

[0063] 202, the first device sends a second signal to the network device at a second transmission power.

[0064] In some embodiments, the first device may be an intermediate node, which can be a relay node, integrated access and backhaul (IAB) node, user equipment (UE), repeater, etc., with A-IoT capabilities. The intermediate node transmits A-IoT service-related data and / or signaling between the second device and the network device. There may be one or more intermediate nodes between a network device and the second device. The communication between a network device and the second device can be single-hop or multi-hop.

[0065] In some embodiments, the second device is a tag-type terminal device, which may also be called an environmental IoT device. This environmental IoT device may be called an A-IoT (Ambient Internet of Things) device, an environmental IoT device, a passive IoT device, or simply a tag-type device, etc.

[0066] In some embodiments, the second device is a device with almost no power storage capacity and can only support very low power consumption; for example, the second device can support peak power consumption of 1μW or several hundredμW.

[0067] In some embodiments, the second device may carry and transmit a signal via a first waveform, which may be a continuous wave (CW), a carrier wave (CW), a backscattered / backscattering wave, a radio frequency wave, a cosine wave, a sine wave, an uplink wave, etc., and this application is not limited thereto. However, the embodiments of this application are not limited by this name.

[0068] As an example, the first waveform is a waveform sent by a first device, network device, or third-party device. The second device modulates the signal to be sent to the first device onto the first waveform by adjusting its backscatter circuit, and then backscatters the modulated first waveform.

[0069] As yet another example, the second device generates a first waveform on its own and modulates the signal to be sent to the first device onto the first waveform for transmission.

[0070] In some embodiments, the first device does not need to distinguish whether the received waveform was sent by the second device through backscattering or generated autonomously, but can use a unified receiving algorithm and mechanism to obtain the information carried on it.

[0071] In some embodiments, the signal sent by the reader to the second device can be referred to as an R2D (reader to device) signal or a downlink signal, and the signal sent by the second device to the reader can be referred to as a D2R (device to reader) signal or an uplink signal; the link through which the reader sends signals to the second device can be referred to as an R2D (reader to device) link or a downlink, and the link through which the second device sends signals to the reader can be referred to as a D2R (device to reader) link or an uplink, etc. This application embodiment is not intended to limit the scope of the embodiments. R2D refers to transmission, link, or communication from the reader to the second device. D2R refers to transmission, link, or communication from the second device to the reader.

[0072] In some embodiments, the first signal may be an R2D signal or a PRDCH channel, i.e., a physical channel in the R2D direction. The first signal may originate from a network device or from the first device itself. It should be noted that the first signal in this application embodiment does not refer to a specific signal, but rather any R2D signal can be called the first signal.

[0073] In some embodiments, the first transmission power is the transmission power of the first device transmitting the first signal to the second device in the first frequency band and the first time domain resources.

[0074] In some embodiments, the first frequency band can be an R2D band, i.e., the bandwidth or frequency domain resource occupied by the first signal. The location of the first frequency band can be a standard predefined band, for example, a band at a certain position on the n5 frequency band. Alternatively, the location of the first frequency band can be configured by the network device to the first device, for example, the network device sends frequency domain resource configuration information to the first device, which is used to indicate which frequency domain resource unit in the first partial bandwidth (BWP) the location of the first frequency band is located in. The above location can be the start position, end position, or middle position of the first frequency band, etc., and the embodiments of this application are not limited thereto. The size of the first frequency band can be a predefined default value, such as 10MHz. Alternatively, it can include N frequency domain resource units, where N is a positive integer greater than or equal to 1. The frequency domain resource unit can be a bandwidth in NR frequency domain units. For example, the frequency domain resource unit can be a resource block (PRB or RB), and the subcarrier spacing of the resource block is 15kHz or the same as the predefined subcarrier spacing of the downlink / uplink channel / signal. Alternatively, the frequency domain resource unit may be a new frequency domain resource unit defined for the A-IOT system, including a predetermined number of subcarrier intervals, etc., but this application embodiment does not limit it.

[0075] In some embodiments, the first time-domain resource is the time-domain resource or a portion of the time-domain resource occupied by transmitting the first signal. It can be the chip length of each modulation of the first signal, where the R2D information bits, after line coding, are modulated by OOK, and the duration of a high level ("1") or a low level ("0") after OOK modulation is one modulation chip; or, the first time-domain resource can be the total time-domain resource occupied by transmitting the first signal; or it can be a time-domain unit defined in NR, such as including M symbols, time slots, subframes, or frames, where M is a positive integer greater than or equal to 1; or it can be a new time-domain resource unit defined for the A-IoT system, etc., and this application embodiment does not limit it to these.

[0076] In some embodiments, the first transmit power is the average power, peak power, high-level power value, low-level power value, or the average of high-level and low-level power values ​​transmitted over the first frequency band and the first time domain resources. High level and low level refer to the high or low level corresponding to the aforementioned chip.

[0077] For example, the first transmission power is the peak power or maximum transmission power of the first device in the first frequency band and the time domain resources of the first signal during transmission; as another example, the first transmission power is the level value of the first device in the first frequency band and on a high-level chip and / or on a low-level chip; as yet another example, the first transmission power is the average of the high and low levels of the first device in the first frequency band and on a line coding codeword (two chips), etc. The embodiments of this application are not intended to be limiting.

[0078] In some embodiments, the antenna on which the first device transmits the first signal is an omnidirectional antenna or a unidirectional antenna, and the power at which the first signal is transmitted on the omnidirectional antenna / unidirectional antenna is the first transmission power.

[0079] In some embodiments, the first device also needs to determine the first transmission power. The following describes how to determine the first transmission power.

[0080] In some embodiments, the value of the first transmission power is a predefined value. That is, the first device determines the value of the first transmission power based on a predefined value. For example, the first transmission power is a standard predefined value or a value preset at the factory for the first device. The first transmission power is related to the device type of the second device, and / or the information type carried by the first signal, and / or the use case corresponding to the first signal. In other words, different device types of the second device, and / or different information types carried by the first signal, and / or different use cases corresponding to the first signal, will correspond to different first transmission powers as predefined by the standard.

[0081] In some examples, the device type of the second device includes type 1 and type 2. Optionally, type 2 includes type 2a and type 2b. For different types of second devices, the standard predefines different first transmit powers. For example, the values ​​of the predefined first transmit powers can be found in Table 1 or Table 2 below.

[0082] Table 1

[0083] Table 2

[0084] For example, a first device sends a first signal to a second device with a power value of P1, the second device being type 1; a first device sends a first signal to a second device with a power value of P2, the second device being type 2; and P1 and P2 are not equal. Alternatively, a first device sends a first signal to a second device with a power value of P1, the second device being type 1; a first device sends a first signal to a second device with a power value of P2, the second device being type 2a; a first device sends a first signal to a second device with a power value of P3, the second device being type 2b, and P1, P2, and P3 are not equal to each other.

[0085] Therefore, due to the varying capabilities of different A-IoT device types, the required sensitivity intensity to activate A-IoT devices for communication differs, and the energy required for accurate signal detection by A-IoT devices also varies. The aforementioned solution increases the probability of A-IoT devices of different types accurately receiving R2D signals.

[0086] In some examples, the information carried by the first signal includes physical layer control information, higher layer control information, R2D data, Msg0, Msg2, or A-IoT paging messages, etc. Figure 3 is an AS signaling process diagram on the A-IoT air interface between the second device and the first device according to an embodiment of this application. As shown in Figure 3, Step A: A-IoT paging. Based on the service request, an A-IoT paging message is sent to indicate the device that needs to respond; this paging message is Msg0, used to notify the second device that random access is possible or that the second device needs to send a D2R signal. Step B: D2R data (device ID) transmission. The triggered A-IoT device performs device ID transmission, using or not using the A-IoT random access procedure; Step C1: Possible R2D data transmission (e.g., for sending a command), which is Msg2; Step C2: Possible D2R data transmission (e.g., the response to the command).

[0087] For example, the first device sends a first signal to the second device with a power value of P1, wherein the first signal carries Msg0; the first device sends a first signal to the second device with a power value of P2, wherein the first signal carries Msg2; and P1 and P2 are not equal.

[0088] For example, the first device sends a first signal to the second device with a power value of P1, wherein the first signal carries physical layer control information; the first device sends a first signal to the second device with a power value of P2, wherein the first signal carries higher layer data; and P1 and P2 are not equal.

[0089] Therefore, since the importance of different R2D signal types and the probability of them being accurately received vary, the above scheme can increase the probability of accurately receiving different types of R2D signals, and can save energy for the first device when transmitting less important R2D signals.

[0090] In some examples, the use cases corresponding to the first signal include "inventory only", "command only", and "inventory and command".

[0091] For example, in an inventory-only use case, the first device sends the first signal (or Msg0) with a power value of P1, while in an inventory and command use case, the first device sends the first signal (or Msg0) with a power value of P2, where P1 and P2 are not equal.

[0092] Therefore, since the number of A-IoT devices needing to receive the first signal varies in different use cases, and the type, message size, and importance of the transmitted R2D signal also differ in different use cases, the above solution can increase the probability of accurate reception of the R2D signal in different use cases, and in some scenarios, it can save energy consumption for the first device to transmit the first signal.

[0093] The above examples can be implemented individually or in combination, and the embodiments of this application are not intended to limit them. For example, in a combined implementation, the first device sends a first signal to the second device at a power value of P1, the second device being type 1, and the first signal carrying Msg0; the first device sends a first signal to the second device at a power value of P2, the second device being type 2, and the first signal carrying Msg0; the first device sends a first signal to the second device at a power value of P3, the second device being type 1, and the first signal carrying Msg2; the first device sends a first signal to the second device at a power value of P4, the second device being type 2, and the first signal carrying Msg2, and so on. These examples will not be listed individually here.

[0094] In some embodiments, the value of the first transmission power is determined based on a predefined method, that is, the first device determines the value of the first transmission power based on a predefined method. Specifically, the first transmission power is predefined to be equal to, less than, greater than, not less than, or not greater than a third transmission power, or the value of the first transmission power is predefined to be determined based on the third transmission power.

[0095] In some embodiments, the third transmit power is a predefined value, or the third transmit power is the maximum transmit power defined by NR, or the third transmit power is the transmit power of the first device transmitting uplink signals and / or channels calculated by a formula defined by NR, or the third transmit power is a parameter value of the transmit power of the first device transmitting uplink signals and / or channels calculated by a formula defined by NR. The following examples illustrate this.

[0096] In some examples, the value of the first transmit power is based on the maximum transmit power P defined in the NR. CMAX For example, the value of the first transmission power is predefined as equal to or greater than, or not greater than or not less than P. CMAX For example, the value of the first power is based on P. CMAXThe value is determined. For example, if the transmission bandwidth of the first signal is B1, the value of P calculated by the first device is determined. CMAX The carrier bandwidth is B2, and the first transmission power is... Alternatively, the third transmission power could also be P as defined by NR. O_PUSCH,b,f,c or P EMAX,c .

[0097] In some examples, the value of the first transmit power is determined based on the transmit power of the first device transmitting uplink signals and / or channels calculated using a formula defined by NR, or based on the value of a parameter of the transmit power of the first device transmitting uplink signals and / or channels calculated using a formula defined by NR. The uplink signals and / or channels include, but are not limited to, PRACH, PUSCH, SRS, PUCCH, etc. For example, the transmit power of the uplink signals and / or channels defined by NR is calculated according to the following formula (taking PUSCH as an example):

[0098] Among them, P CMAX The calculation formula is as follows:

[0099] P CMAX_L,f,c ≤P CMAX,f,c ≤P CMAX_H,f,c

[0100] P CMAX_L,f,c =MIN{P EMAX,c –ΔT C,c ,(P PowerClass –ΔP PowerClass +ΔP PowerBoost )–MAX(MAX(MPR c +ΔMPR c A-MPR c )+ΔT IB,c +ΔT C,c +ΔT RxSRS P-MPR c )}

[0101] P CMAX_H,f,c =MIN{P EMAX,c ,P PowerClass –ΔP PowerClass +ΔP PowerBoost}

[0102] Among them, P CMAX,f,c P is the maximum power of carrier f in cell c; O_PUSCH,b,f,c (j) is the target received power on the uplink bandwidth part (BWP) b of carrier f in cell c; It is the bandwidth of carrier f in cell c on the uplink bandwidth portion b; α b,f,c(j) is the path loss compensation factor on the uplink bandwidth portion b of carrier f in cell c; PL b,f,c (q d () refers to the uplink bandwidth portion b of carrier f in cell c based on the reference signal q. d The downlink path loss estimation is given by l, which is the closed-loop index. Other parameters can be found in TS 38.213 and TS 38.101, and will not be elaborated here.

[0103] For example, the value of the first transmission power is equal to, less than, greater than, not less than, or not greater than the value calculated according to the above formula, or equal to, less than, greater than, not less than, or not greater than the value of one of the parameters in the above formula, which includes, but is not limited to, P. CMAX or P O_PUSCH or P PowerClass For example, the first device calculates P according to the above formula. CMAX or P O_PUSCH or P PowerClass The value is P1. The value of the first transmission power is determined based on P1. The value of the first transmission power can be equal to, less than, greater than, or not less than or not greater than P1.

[0104] The aforementioned power levels support at least Level 1, Level 2, or Level 3 in the A-IoT R2D (downlink) and / or D2R (uplink) bands, or the first device supports a newly defined power level in the A-IoT R2D and / or D2R bands. Level 3 is applicable to all bands with a maximum output power of 23 dBm, Level 2 is applicable to specific bands with a maximum output power of 26 dBm, and tolerance values ​​are set for the maximum output power of each level.

[0105] For example, the newly defined power level defines the maximum output power of the first device transmitting A-IoT R2D signals in a certain frequency band, and the measurement period is at least one time unit. The time unit can be a time unit defined by NR, such as a frame, subframe, time slot, symbol, etc.; it can also be a time unit defined in A-IoT, such as a line coding chip, modulation chip, etc.; it can also be a newly defined time unit, or an absolute time unit such as a second, millisecond, etc. The embodiments of this application are not limited thereto.

[0106] By limiting the power class, for example, the first device only needs to support the default power class, the complexity of the first device is reduced. Alternatively, the first device may need to support power class 2 (i.e., High power class). Considering the ultra-low energy consumption and ultra-low complexity of A-IoT devices, the transmission power of the R2D signal can be greater than that of a normal transmission signal. This increases the probability of the R2D signal being correctly received and reduces the energy consumption of the A-IoT device in detecting the R2D signal.

[0107] In the above embodiments, the first transmission power is determined according to a predefined method, thereby reducing the complexity of the first device in determining the R2D signal transmission power and saving signaling overhead.

[0108] In some embodiments, the relevant value of the first transmit power is configured by the network device through configuration information, and / or the parameter used to determine the first transmit power is configured by the network device through configuration information; the configuration information includes the relevant value of the first transmit power, or includes the value of the parameter used to determine the first transmit power. That is, the first device determines the value of the first transmit power based on the configuration information.

[0109] In some embodiments, the relevant values ​​of the first transmission power include: the absolute value of the first transmission power, or the index value corresponding to the first transmission power, or the maximum, minimum, or average value of the first transmission power, or the index value corresponding to the maximum, minimum, or average value of the first transmission power, or the expected absolute value of the transmission power of the first signal, or the index value corresponding to the expected absolute value of the transmission power of the first signal. The correspondence between the index value and the first transmission power can be pre-configured, and this embodiment of the application does not limit this.

[0110] In some embodiments, the values ​​of the parameters used to determine the first transmit power include parameters from the formula used to calculate the transmit power of the first device transmitting uplink signals and / or the channel. This calculation formula can be the aforementioned formula defined by NR, or it can be a newly defined formula for calculating the transmit power of transmitting R2D signals; this application embodiment does not limit this. The parameters in the formula include, but are not limited to, the received power target, the transmission bandwidth of the R2D signal, path loss, etc., and this application embodiment does not limit this.

[0111] In some embodiments, configuration information may be carried by higher-layer signaling (e.g., MAC CE signaling or RRC signaling) or by physical-layer signaling (e.g., DCI).

[0112] In some examples, the configuration information is configured periodically by higher-layer signaling, and / or semi-persistently, and / or dynamically by physical layer signaling. Periodic and / or semi-persistent configurations can also be referred to as semi-static configurations. Periodic configuration saves signaling overhead; semi-static configuration allows for relatively flexible configuration of transmit power; and dynamic configuration allows for flexible transmission power adjustment under different conditions, increasing the probability of accurate R2D signal reception.

[0113] For example, the configuration information is configured periodically, and the configuration information is configured together with RRC signaling and periodic time-domain resources. That is, the first transmission power is configured together with the time-domain resources. In the time-domain resources, the first device transmits the first signal and determines the first transmission power of the first signal according to the configuration information. Alternatively, the first configuration information is configured in time unit n and other configuration information is configured in time unit n+X*T (that is, the first device periodically receives configuration information, i.e., periodically configures the first transmission power information), where X is a positive integer greater than or equal to 0, T is the configuration period of the configuration information, and the first device transmits the first signal on subsequent time-domain resources according to the received configuration information and determines the first transmission power of the first signal according to the configuration information.

[0114] For example, the configuration information is semi-persistently configured, configured by RRC, and activated and / or deactivated via MAC CE. For instance, the configuration information is configured together with periodic time-domain resources, or the configuration information is periodically configured to the first device by the network-side device (i.e., the first device periodically receives the configuration information); after receiving a MAC CE activation command or update command, the first device begins to determine the first transmission power based on the configuration information, and after receiving MAC CE deactivation information, it begins to determine the first transmission power without using the configuration information, or after receiving a new MAC CE activation command / update command, the first device uses the configuration information corresponding to the new command to determine the subsequent R2D signal transmission power.

[0115] For example, the configuration information is dynamically configured, either by RRC and triggered / activated by DCI, or the configuration information is configured by DCI. In the case where the configuration information is configured by RRC and triggered / activated by DCI, the configuration information is pre-configured or periodically configured by the network-side device to the first device via RRC signaling. After receiving the trigger indication or activation indication information carried by the DCI, the first device begins to use the corresponding configuration information to determine the first transmission power of the subsequent first signal. In the case where the configuration information is configured by DCI, the configuration information is indicated to the first device by the network-side device via DCI information. After receiving the DCI, the first device begins to use the configuration information therein to determine the first transmission power of the subsequent first signal.

[0116] In some examples, the configuration information is reconfigured by higher-layer signaling or physical layer signaling.

[0117] For example, based on the information reported by the first device (as explained below), the network device reconfigures or updates the configuration information via RRC signaling or DCI; or when a predefined triggering event is met, the network device reconfigures or updates the configuration information via RRC signaling or DCI.

[0118] In some embodiments, different device types of second devices, and / or different information types carried by the first signal, and / or different use cases corresponding to the first signal, have different configuration information configuration values ​​(or determined first transmission power values), and / or different information elements in the configuration information. This increases the probability of accurate reception of the R2D signal in different scenarios and can save energy consumption for the first device to transmit the first signal in some scenarios. The implementation methods regarding device type, information type, and use case have been described above and will not be repeated here. However, this application embodiment is not intended to limit this; different device types of second devices, and / or different information types carried by the first signal, and / or different use cases corresponding to the first signal, may have the same configuration information configuration values ​​(or determined first transmission power values), and / or the same information elements in the configuration information. The following examples illustrate this.

[0119] In some examples, a first device receives first configuration information from a network device, sends a first signal to a first second device, and determines the transmission power P1 of the first signal based on the first configuration information. The first device also receives second configuration information from a network device, sends a third signal to a second second device, and determines the transmission power P2 of the third signal based on the second configuration information. The first and second configuration information are the configuration information described above; the types of the first and second second devices are the same or different, and P1 and P2 are the same or different. For example, if the first second device is type 1 and the second second device is type 2a, the values ​​configured in the first and second configuration information are different, the determined P1 and P2 are different, and the second and first configuration information are different information cells or signaling.

[0120] In some examples, a first device receives first configuration information from a network device, sends a first signal to a first second device, and determines the transmission power P1 of the first signal based on the first configuration information. The first device receives second configuration information from the network device, sends a third signal to a second second device, and determines the transmission power P2 of the third signal based on the second configuration information. The first and second configuration information are the configuration information described above; the first and third signals carry the same or different information types, and P1 and P2 are the same or different. For example, if the first signal carries Msg 0 and the third signal carries Msg 2, and the values ​​configured in the first and second configuration information are different, then the determined P1 and P2 are different, and the second and first configuration information are different information cells or signaling.

[0121] In some examples, a first device receives first configuration information from a network device, sends a first signal to a first second device, and determines the transmission power P1 of the first signal based on the first configuration information. The first device also receives second configuration information from a network device, sends a third signal to a second second device, and determines the transmission power P2 of the third signal based on the second configuration information. The first and second configuration information are the configuration information described above. The first device sends the first signal and / or the third signal in the same or different use cases, and P1 and P2 may be the same or different. For example, the first signal may be sent by the first device in an inventory-only use case, and the third signal may be sent by the first device in a command-only use case. The values ​​configured in the first and second configuration information are different, resulting in different determined P1 and P2. The second and first configuration information are different information cells or signaling.

[0122] The above examples illustrate different device types of the second device, and / or different information types carried by the first signal, and / or different use cases corresponding to the first signal, with different information elements or signaling of the corresponding configuration information. However, the information elements or signaling of the configuration information can also be the same, and will not be listed in detail here.

[0123] In some embodiments, the configuration information is carried by common configuration signaling, dedicated configuration signaling, or group configuration signaling. This configuration information may be configured for all R2D signals (or, in other words, the configuration information is used to determine the transmission power of all R2D signals), or configured for all second devices (or, in other words, the configuration information is used to determine the transmission power of signals sent to all second devices), or configured for R2D signals (groups) (or, in other words, the configuration information is used to determine the transmission power of a single R2D signal or a group of R2D signals), or configured for a second device (group) (or, in other words, the configuration information is used to determine the transmission power of signals sent to a single second device or a group of second devices). For example, the configuration information can be common configuration information used to determine the transmission power of all R2D signals transmitted by the first device, or it can be group configuration information used to determine the transmission power of a portion of the R2D signals transmitted by the first device (where the portion of the R2D signals can be transmitted to one second device or to multiple second devices), or it can be dedicated configuration information used to determine the transmission power of a specific R2D signal transmitted by the first device, or it can be group configuration information used to determine the transmission power of signals transmitted to a portion of the second devices, or it can be dedicated configuration information used to determine the transmission power of signals transmitted to a specific second device.

[0124] In some embodiments, the configuration information relates to at least one of the following: information related to the proximity determination of the second device; information related to the signal received power of the second device received by the first device; information related to the path loss of the R2D link measured by the first device; and information related to the power headroom of the first device. The names of the above information are merely illustrative and are not intended to be limiting.

[0125] In some embodiments, the method may further include:

[0126] The first device reports one of the following information to the network device via higher-layer signaling or physical-layer signaling: information related to the proximity determination of the second device; information related to the signal received power of the second device received by the first device; information related to the path loss of the R2D link measured by the first device; and information related to the power headroom of the first device. The network device can reconfigure its configuration information based on the reported information. Examples are given below.

[0127] In some examples, the configuration information relates to the proximity of the second device. Adjusting the transmission power of the first device's R2D signal based on the proximity of the A-IoT device can save energy when the A-IoT device is close and increase transmission power when the A-IoT device is far away, thereby increasing the probability that the R2D signal is accurately received by the A-IoT device. Figure 4 is a schematic diagram of a signal transmission method according to an embodiment of this application. As shown in Figure 4, the method includes:

[0128] 401, the first device receives the first configuration information from the network device;

[0129] 402, The first device determines the transmission power P1 (i.e., the first transmission power) for transmitting the first signal based on the first configuration information.

[0130] 403, the first device sends a first signal to the second device at power P1 on the first frequency band and the first time domain resources.

[0131] 404, the first device receives a D2R signal from the second device, and the first device determines the proximity of the second device.

[0132] 405, the first device reports proximity-related information to the network-side device.

[0133] In some embodiments, the proximity information is determined based on the D2R signal energy received by the first device. The signal energy can be the peak, maximum, minimum, or average D2R signal energy over a certain period. Second devices with signal energy greater than a threshold are considered closer second devices, and those with signal energy less than the threshold are considered farther second devices. The threshold is a value predefined by a standard or a value configured by the network device. The proximity information of the second device can be determined in one of the following ways:

[0134] For example, the first device does not need to report proximity-related information based on events. Instead, after receiving relevant information from the reporting configuration, the first device reports proximity-related information within the specified or configured time-frequency resources.

[0135] For example, the first device determines the number of second devices that are far away or near by receiving D2R signals within a certain period of time, which is Y. When Y is greater than or less than a threshold, the first device reports information related to proximity.

[0136] In some embodiments, the proximity-related information may be at least one of the following:

[0137] One bit of information: a value of "1" indicates that the current coverage is good or ideal, meaning there are enough nearby second devices or few distant second devices; a value of "0" indicates that the current coverage is poor or unsatisfactory, meaning there are few nearby second devices or many distant second devices. Alternatively,

[0138] The first device reports the number of nearby and / or distant second devices within a certain time period, or reports the ratio of the number of nearby to the number of distant second devices, etc. Alternatively,

[0139] The standard predefines a value / index / level corresponding to a certain range for the number of nearby or distant second devices (or the ratio of the number of nearby second devices to the number of distant second devices). The first device reports the corresponding value index / level based on the number of nearby and / or distant second devices.

[0140] In some embodiments, the proximity-related information may be reported periodically or dynamically.

[0141] 406, the first device receives the second configuration information from the network device.

[0142] 407. The first device determines the transmission power P2 for sending the next first signal based on the second configuration information. The second configuration information may or may not be related to the proximity-related information reported in 405. That is, the network device can configure the second configuration information based on the proximity-related information, or it may not configure the second configuration information based on the proximity-related information. The value of P2 may be the same as or different from the value of P1.

[0143] In some examples, this configuration information relates to information about the signal reception power of the second device received by the first device. The transmission power of the R2D signal is adjusted based on the power of the received D2R signal to determine the capability of the A-IoT device or its distance from the first device. For example, when the D2R signal reception power is high, the transmission power of the first device can be adjusted to save energy consumption of the intermedia UE; when the D2R signal reception power is low, the transmission power of the first device can be adjusted to increase the probability that the R2D signal is accurately received by the A-IoT device. Figure 5 is a schematic diagram of a signal transmission method according to an embodiment of this application. As shown in Figure 5, the method includes:

[0144] 501, the first device receives the first configuration information from the network device;

[0145] 502, The first device determines the transmission power P1 (i.e., the first transmission power) for transmitting the first signal based on the first configuration information.

[0146] 503, the first device sends a first signal to the second device at power P1 on the first frequency band and the first time domain resources.

[0147] 504, the first device receives a D2R signal from the second device, and the first device determines the received power of the D2R signal or the power of the D2R signal reaching the first device.

[0148] 505, The first device reports information about the received power of the D2R signal to the network device.

[0149] In some embodiments, the information relating to the received power of the D2R signal includes at least one of the following:

[0150] For example, the first device reports the peak power of the received D2R signal and the average received power of the D2R signal over a certain period of time. The D2R signal can be one or more D2R transmissions from a single second device within a certain time period, or it can be D2R transmissions from multiple second devices within a certain time period.

[0151] For example, the standard predefines / the network side configures a value / index / level corresponding to the number of second devices whose D2R signal reception power is greater than and / or less than a threshold. The first device reports the corresponding value / index / level based on the D2R signal reception power. In the case of a second device whose D2R signal reception power is greater than and / or less than a threshold, the threshold is a value predetermined by the standard or configured by the network side device.

[0152] For example, the number of second devices whose received power of the D2R signal measured by the first device within a certain period of time is greater than and / or less than a threshold. The threshold is a value predefined by the standard or a value configured by the network-side equipment.

[0153] For example, information related to received power is 1 bit. If the received power of the first device's D2R signal is less than the threshold and the number of second devices is greater than Z, the reported bit value is "1"; if the received power of the first device's D2R signal is less than the threshold and the number of second devices is less than Z, the reported bit value is "0", and vice versa. The threshold is a value predefined by the standard or configured by the network-side equipment, and the value of N is also predefined by the standard or configured by the network-side equipment.

[0154] In some embodiments, the information regarding the received power of the D2R signal may be reported periodically, semi-continuously, or dynamically.

[0155] 506, the first device receives the second configuration information from the network device;

[0156] 507. The first device determines the transmission power P2 for sending the next first signal based on the second configuration information. The second configuration information may or may not be related to the information concerning the received power of the D2R signal. That is, the network device may configure the second configuration information based on the information concerning the received power of the D2R signal, or it may not configure the second configuration information based on the information concerning the received power of the D2R signal. The value of P2 may be the same as or different from the value of P1.

[0157] In some examples, this configuration information is related to path loss information of the R2D link measured by the first device. Based on the signal path loss information measured by the first device between the first and second devices, the channel condition between the first and second devices is determined, thereby adjusting the transmission power of the first device for transmitting the R2D signal. For example, when the path loss is large, the channel condition is poor; increasing the transmission power of the first device increases the probability that the R2D signal is accurately received by the A-IoT device. When the path loss is small, the channel condition is good; adjusting the transmission power of the first device saves energy consumption for the UE. Figure 6 is a schematic diagram of a signal transmission method according to an embodiment of this application. As shown in Figure 6, the method includes:

[0158] 601, the first device receives the first configuration information from the network device;

[0159] 602, the first device determines the transmission power P1 (i.e. the first transmission power) for transmitting the first signal based on the first configuration information.

[0160] 603, the first device transmits a first signal to the second device at power P1 on the first frequency band and the first time domain resources.

[0161] 604, the first device receives a D2R signal from the second device, and the first device measures the path loss between the first device and the second device.

[0162] 605, the first device reports information related to the measured road loss to the network device.

[0163] The first device measures the path loss with the second device in one of the following ways: calculating the path loss with the second device according to the path loss defined by NR; measuring the path loss with the second device according to D2R signals (D2R ambles (preamble and / or midamble and / or postamble)); or measuring the path loss with the second device according to a D2R reference signal. This path loss relates to the path loss between one second device or to the path loss between multiple second devices.

[0164] For example, path loss is the peak or average value of path loss measured based on one or more D2R signals transmitted by a second device.

[0165] For example, path loss is the path loss measured based on D2R signals sent by multiple second devices.

[0166] For example, path loss is the maximum or average value of path loss of one or more D2R signals between one or more second devices measured over a certain period of time.

[0167] In some embodiments, the information related to road loss is the absolute or maximum value of the measured road loss, or the relative value of the measured road loss to a reference road loss (which may be predefined or the road loss value reported last time), or the index value corresponding to the measured road loss.

[0168] 606, The first device receives the second configuration information from the network device;

[0169] 607. The first device determines the transmission power P2 for sending the next first signal based on the second configuration information. The second configuration information may or may not be related to path loss information. That is, the network device can configure the second configuration information based on the path loss information, or it may not configure the second configuration information based on the path loss information. The value of P2 may be the same as or different from the value of P1.

[0170] In some examples, this configuration information relates to the power headroom of the first device, and the transmission power of the first device transmitting R2D signals is adjusted according to the power headroom. For example, when the first device has power headroom, the network device can adjust the resources configured for the UE, improving resource utilization. Figure 7 is a schematic diagram of a signal transmission method according to an embodiment of this application. As shown in Figure 7, the method includes:

[0171] 701, The first device receives the first configuration information from the network device;

[0172] 702, the first device determines the transmission power P1 (i.e. the first transmission power) for transmitting the first signal based on the first configuration information.

[0173] 703, the first device transmits a first signal to the second device at power P2 on the first frequency band and the first time domain resources.

[0174] 704. The first device calculates the power margin and reports the relevant information about the power margin to the network device.

[0175] In some embodiments, the power margin is calculated according to at least one of the following methods:

[0176] The power difference between P2 and P1;

[0177] The power difference between the maximum or average transmission power and P1 in the first frequency band during the first time period;

[0178] Wherein, P2 is the actual transmission power of the fourth signal transmitted by the transmitter before transmitting the first signal; and P1 is the transmission power of transmitting the fourth signal determined according to the configuration information.

[0179] In some embodiments, the information related to the power margin includes: the absolute value of the calculated power margin; or the index value corresponding to the calculated power margin.

[0180] 705, the first device receives the second configuration information from the network device;

[0181] 706. The first device determines the transmission power P3 for sending the next first signal based on the second configuration information. The second configuration information may or may not be related to information concerning power margin. That is, the network device can configure the second configuration information based on the power margin-related information, or it may not configure the second configuration information based on the power margin-related information. The value of P3 may be the same as or different from the value of P1.

[0182] The embodiments shown in Figures 4 to 7 above can be implemented individually or in combination, and the embodiments of this application are not intended to limit them.

[0183] Through the above embodiments, the first device can determine the power of transmitting R2D signals according to the configuration information, which increases flexibility. It can adjust the transmission power of transmitting R2D signals for different configurations, use a more suitable transmission power to transmit R2D signals, and increase the probability that the R2D signals are accurately received.

[0184] In some embodiments, the implementation of the second transmission power can be determined with reference to the prior art, such as the transmission power value defined by NR, or the transmission power of the first device transmitting the second signal calculated by the formula defined by NR. The second signal is an NR signal, including uplink signals and / or channels, such as PUCCH, PUSCH, SRS, CSI reports, which will not be elaborated here.

[0185] In some embodiments, the method may further include: the first device receiving a D2R signal from the second device.

[0186] The above description only covers the steps or processes relevant to this application, but this application is not limited thereto. The methods in the embodiments of this application may also include other steps or processes, and for details of these steps or processes, please refer to related technologies.

[0187] The above embodiments are merely illustrative examples of embodiments of this application, but this application is not limited thereto, and appropriate modifications can be made based on the above embodiments. For example, the above embodiments can be used alone, or one or more of the above embodiments can be combined.

[0188] According to the embodiments of this application, it is possible to avoid interference with NR / LTE and other communications caused by excessive signal power sent by intermediate nodes to tag-type terminal devices. Furthermore, by controlling the transmission power of intermediate nodes to tag-type terminal devices, the coverage of tag-type terminal devices at greater distances can be enhanced, enabling them to receive signals sent by intermediate nodes.

[0189] Second aspect of the embodiments

[0190] This application provides a signal transmitting device. This device may be, for example, a first device, or one or more components or parts disposed within the first device; details identical to those in the first aspect of the embodiment will not be repeated.

[0191] Figure 8 is a schematic diagram of a signal transmitting device according to an embodiment of this application. Since the principle of the signal transmitting device in solving the problem is the same as the method of the first aspect embodiment, its specific implementation can refer to the first aspect embodiment, and the contents that are the same will not be repeated.

[0192] As shown in Figure 8, the signal transmitting device 800 of this application embodiment includes:

[0193] Transmitter 801, which transmits a first signal to a second device at a first transmission power; and,

[0194] A second signal is sent to the network device at a second transmission power.

[0195] The implementation of transmitter 801 can refer to 201 of the first aspect. The method for determining the first transmission power is as described in the embodiment of the first aspect, and the repeated parts will not be repeated.

[0196] Optionally, the transmitter 801 is also configured to report one of the following information to the network device via higher-layer signaling or physical-layer signaling:

[0197] Information related to the proximity determination of the second device;

[0198] Information about the signal receiving power of the second device received by the first device;

[0199] Information related to path loss of the R2D link measured by the first device;

[0200] Information regarding the power headroom of the first device.

[0201] Optionally, the device may further include a receiver (not shown) for receiving configuration information sent by the network device. Implementation details of this configuration information can be found in the embodiments of the first aspect, and will not be repeated here. Optionally, it may also receive D2R signals from a second device.

[0202] Furthermore, for simplicity, Figure 8 only illustrates the connection relationships or signal flow between the various components or modules, but those skilled in the art should understand that various related technologies such as bus connections can be used. The aforementioned components or modules can be implemented using hardware facilities such as processors, memory, transmitters, and receivers; this application does not limit this implementation.

[0203] The above embodiments are merely illustrative examples of embodiments of this application, but this application is not limited thereto, and appropriate modifications can be made based on the above embodiments. For example, the above embodiments can be used alone, or one or more of the above embodiments can be combined.

[0204] Third aspect of the embodiments

[0205] This application provides a signal receiving method, which will be described from the perspective of a second device. The same content as the first aspect of the embodiment will not be repeated.

[0206] Figure 9 is a schematic diagram of the signal receiving method according to an embodiment of this application. As shown in Figure 9, the method includes:

[0207] 901, the second device receives a first signal sent by the first device, wherein the first signal is sent by the first device at a first transmission power.

[0208] The implementation of 901 can refer to 201 of the first aspect. The method for determining the first transmission power is as described in the embodiment of the first aspect, and the repeated parts will not be repeated.

[0209] Optionally, the method may further include: the second device sending a D2R signal to the first device or network device.

[0210] The above description only covers the steps or processes relevant to this application, but this application is not limited thereto. The methods in the embodiments of this application may also include other steps or processes, and for details of these steps or processes, please refer to related technologies.

[0211] The above embodiments are merely illustrative examples of embodiments of this application, but this application is not limited thereto, and appropriate modifications can be made based on the above embodiments. For example, the above embodiments can be used alone, or one or more of the above embodiments can be combined.

[0212] Fourth aspect of the embodiment

[0213] This application provides a signal receiving device. This device may be, for example, a second device, or one or more components or parts configured within a second device; details identical to those in the third aspect of the embodiment will not be repeated.

[0214] Figure 10 is a schematic diagram of a signal receiving device according to an embodiment of this application. Since the principle of the signal receiving device in solving the problem is the same as the method of the embodiment of the third aspect, its specific implementation can refer to the embodiment of the third aspect, and the contents that are the same will not be repeated.

[0215] As shown in Figure 10, the signal receiving device 1000 of this application embodiment includes:

[0216] Receiver 1001 receives a first signal sent by a first device, wherein the first signal is sent by the first device at a first transmission power.

[0217] For details on the implementation methods of the above features, please refer to the embodiments in the third aspect, which will not be repeated here.

[0218] Optionally, the device may also include a transmitter (not shown) that transmits D2R signals to a first device or network device.

[0219] It is worth noting that the above description only covers the components or modules relevant to this application, but this application is not limited thereto. The signal receiving device 1000 of this application embodiment may also include other components or modules, and for details of these components or modules, please refer to related technologies.

[0220] Furthermore, for simplicity, Figure 10 only illustrates the connection relationships or signal flow between the various components or modules, but those skilled in the art should understand that various related technologies such as bus connections can be used. The aforementioned components or modules can be implemented using hardware facilities such as processors, memory, transmitters, and receivers; this application does not limit this implementation.

[0221] The above embodiments are merely illustrative examples of embodiments of this application, but this application is not limited thereto, and appropriate modifications can be made based on the above embodiments. For example, the above embodiments can be used alone, or one or more of the above embodiments can be combined.

[0222] Fifth aspect of the embodiment

[0223] This application also provides a communication system, which can be referred to FIG1B. The contents that are the same as those in the embodiments of the first to fourth aspects will not be repeated.

[0224] In some embodiments, the communication system 100 may include at least: a first device 101, a second device 102, and a network device 103. The second device 102 includes the signal receiving device 1900 in the fourth aspect embodiment, and the first device 101 includes the signal transmitting device 1700 in the second aspect embodiment, which will not be described in detail here.

[0225] Optionally, network device 103 may send configuration information to the first device, which is used to determine the first transmission power of the first device 101 sending the first signal to the second device 102.

[0226] Optionally, network device 103 can also receive D2R signals from a second device.

[0227] This application also provides a first device, but the application is not limited to this and other devices may also be used.

[0228] Figure 11 is a schematic diagram of a first device according to an embodiment of this application. As shown in Figure 11, the first device 1100 may include a processor 1110 and a memory 1120; the memory 1120 stores data and programs and is coupled to the processor 1110. It is worth noting that this figure is exemplary; other types of structures may also be used to supplement or replace this structure to implement telecommunications functions or other functions.

[0229] For example, processor 1110 may be configured to execute a program to implement the method described in the embodiments of the first aspect.

[0230] As shown in Figure 11, the first device 1100 may further include: a communication module 1130, an input unit 1140, and a display 1150. The functions of these components are similar to those in the prior art and will not be described again here. It is worth noting that the first device 1100 does not necessarily include all the components shown in Figure 11; these components are not essential. Furthermore, the first device 1100 may also include components not shown in Figure 11, which can be referred to in the prior art.

[0231] This application also provides a device. This device may be, for example, a second device or a network device.

[0232] Figure 12 is a schematic diagram of the device configuration according to an embodiment of this application. As shown in Figure 12, the first device 1200 may include: a processor 1201 (e.g., a central processing unit CPU) and a memory 1202; the memory 1202 is coupled to the processor 1201. The memory 1202 can store various data; in addition, it also stores an information processing program 1203, and executes the program 1203 under the control of the processor 1201.

[0233] For example, processor 1201 may be configured to execute a program to implement the method described in the embodiments of the third aspect.

[0234] For example, processor 1201 can be configured to execute a program to send configuration information to a first device, the configuration information being used to determine a first transmission power for the first device to send a first signal to a second device.

[0235] In addition, as shown in Figure 12, device 1200 may also include a communication module 1204, etc.; the functions of the above components are similar to those in the prior art, and will not be described in detail here. It is worth noting that device 1200 does not necessarily include all the components shown in Figure 12; in addition, device 1200 may also include components not shown in Figure 12, which can be referred to in the prior art.

[0236] This application also provides a computer-readable program, wherein when the program is executed in a signal transmitting device or a first device, the program causes the computer to perform the method described in the first aspect of the embodiment in the signal transmitting device or the first device.

[0237] This application also provides a storage medium storing a computer-readable program, wherein the computer-readable program causes a computer to perform the method described in the embodiments of the first aspect in a signal transmitting device or a first device.

[0238] This application also provides a computer-readable program, wherein when the program is executed in a signal receiving device or a terminal device, the program causes the computer to perform the method described in the third aspect of the embodiments in the signal receiving device or the second device.

[0239] This application also provides a storage medium storing a computer-readable program, wherein the computer-readable program causes a computer to perform the methods described in the embodiments of the third aspect in a signal receiving device or a second device.

[0240] The apparatus and methods described above in this application can be implemented in hardware or in combination with software. This application relates to a computer-readable program that, when executed by a logic component, enables the logic component to implement the apparatus or components described above, or to implement the various methods or steps described above. Logic components include, for example, field-programmable logic devices (FPGAs), microprocessors, and processors used in computers. This application also relates to storage media for storing the above programs, such as hard disks, magnetic disks, optical disks, DVDs, and flash memory.

[0241] The methods / apparatus described in conjunction with the embodiments of this application can be directly embodied in hardware, software modules executed by a processor, or a combination of both. For example, one or more and / or combinations of one or more functional block diagrams shown in the figures can correspond to various software modules in a computer program flow, or to various hardware modules. These software modules can correspond to the various steps shown in the figures, respectively. These hardware modules can be implemented, for example, using a field-programmable gate array (FPGA) to embed these software modules.

[0242] The software module can reside in RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, hard disk, removable disk, CD-ROM, or any other form of storage medium known in the art. A storage medium can be coupled to the processor, enabling the processor to read information from and write information to the storage medium; or the storage medium can be an integral part of the processor. The processor and storage medium can reside in an ASIC. The software module can be stored in the memory of a mobile terminal or in a memory card that can be inserted into the mobile terminal. For example, if the device (such as a mobile terminal) uses a high-capacity MEGA-SIM card or a high-capacity flash memory device, the software module can be stored in the MEGA-SIM card or the high-capacity flash memory device.

[0243] One or more and / or one or more combinations of functional blocks described in the accompanying drawings can be implemented as a general-purpose processor, digital signal processor (DSP), application-specific integrated circuit (ASIC), field-programmable gate array (FPGA), or other programmable logic device, discrete gate or transistor logic device, discrete hardware component, or any suitable combination thereof for performing the functions described herein. One or more and / or one or more combinations of functional blocks described in the accompanying drawings can also be implemented as a combination of computing devices, such as a combination of a DSP and a microprocessor, multiple microprocessors, one or more microprocessors in communication with a DSP, or any other such configuration.

[0244] The present application has been described above with reference to specific embodiments. However, those skilled in the art should understand that these descriptions are exemplary and not intended to limit the scope of protection of the present application. Those skilled in the art can make various modifications and variations to the present application based on its spirit and principles, and these modifications and variations are also within the scope of the present application.

[0245] Postscript

[0246] 1. An information transmission device, applied to a network device, comprising:

[0247] A transmitter that sends configuration information to a first device, the configuration information being used to determine a first transmission power for the first device to send a first signal to a second device.

[0248] 2. The apparatus according to Appendix 1, wherein the configuration information includes a value related to the first transmission power, or includes a value of a parameter for determining the first transmission power.

[0249] 3. The apparatus according to Appendix 1, wherein the relevant values ​​of the first transmission power include:

[0250] The absolute value of the first transmission power, or the index value corresponding to the first transmission power, or the maximum, minimum or average value of the first transmission power, or the index value corresponding to the maximum, minimum or average value of the first transmission power, or the absolute value of the expected transmission power of the first signal, or the index value corresponding to the absolute value of the expected transmission power of the first signal.

[0251] The values ​​of the parameters used to determine the first transmission power include the parameters in the formula used to calculate the transmission power of the first device transmitting uplink signals and / or channels.

[0252] 4. The apparatus according to Appendix 1, wherein different second devices have different device types, and / or different information types carried by the first signal, and / or different use cases corresponding to the first signal have different configuration information configuration values, and / or different information elements of the configuration information.

[0253] 5. The apparatus according to Appendix 1, wherein the configuration information is carried by common configuration signaling, or by dedicated configuration signaling, or by group configuration signaling.

[0254] 6. The apparatus according to Appendix 1, wherein the configuration information is periodically configured for higher-layer signaling, and / or semi-persistently configured, and / or dynamically configured for physical layer signaling; or, the configuration information is reconfigured for higher-layer signaling or physical layer signaling.

[0255] 7. The apparatus according to Appendix 1, wherein the configuration information relates to at least one of the following:

[0256] Information related to the proximity determination of the second device;

[0257] Information about the signal receiving power of the second device received by the first device;

[0258] Information related to path loss of the R2D link measured by the first device;

[0259] Information regarding the power headroom of the first device.

[0260] 8. The apparatus according to Appendix 1, wherein the apparatus further comprises:

[0261] The receiver receives one of the following information reported by the first device via higher-layer signaling or physical-layer signaling:

[0262] Information related to the proximity determination of the second device;

[0263] Information about the signal receiving power of the second device received by the first device;

[0264] Information related to path loss of the R2D link measured by the first device;

[0265] Information regarding the power headroom of the first device.

[0266] 9. The apparatus according to Appendix 1, further comprising:

[0267] The receiver receives the D2R signal from the second device.

Claims

1. A signal transmitting device, applied to a first device, comprising: A transmitter that transmits a first signal to a second device at a first transmission power; as well as, A second signal is sent to the network device at a second transmission power.

2. The apparatus according to claim 1, wherein, The first transmission power is the transmission power of the first device transmitting the first signal in the first frequency band and the first time domain resources.

3. The apparatus according to claim 2, wherein, The first transmission power is the average power, peak power, high-level power value, low-level power value, or average of high-level and low-level power values ​​transmitted over the first frequency band and the first time domain resources.

4. The apparatus according to claim 1, wherein, The first transmission power is related to the device type of the second device, and / or the type of information carried by the first signal, and / or the use case corresponding to the first signal.

5. The apparatus according to claim 4, wherein, Different second devices, and / or different information types carried by the first signal, and / or different use cases corresponding to the first signal, correspond to different first transmission powers.

6. The apparatus according to claim 1, wherein, The value of the first transmission power is a predefined value, or a value determined based on a predefined method.

7. The apparatus according to claim 6, wherein, The first transmission power is predefined as being equal to, less than, greater than, not less than, or not greater than the third transmission power, or the value of the first transmission power is predefined as being determined based on the third transmission power.

8. The apparatus according to claim 7, wherein, The third transmission power is a predefined value, or the third transmission power is the maximum transmission power defined by New Radio (NR), or the third transmission power is the transmission power of the first device transmitting uplink signals and / or channels calculated by a formula defined by New Radio (NR), or the third transmission power is a parameter value of the transmission power of the first device transmitting uplink signals and / or channels calculated by a formula defined by New Radio (NR).

9. The apparatus according to claim 1, wherein, The relevant value of the first transmission power is configured by the network device through configuration information, and / or the parameter used to determine the first transmission power is configured by the network device through configuration information; The configuration information includes relevant values ​​for the first transmission power, or includes information for determining the first transmission power. The value of the power parameter.

10. The apparatus according to claim 9, wherein, The relevant values ​​for the first transmission power include: The absolute value of the first transmission power, or the index value corresponding to the first transmission power, or the maximum, minimum or average value of the first transmission power, or the index value corresponding to the maximum, minimum or average value of the first transmission power, or the absolute value of the expected transmission power of the first signal, or the index value corresponding to the absolute value of the expected transmission power of the first signal. The values ​​of the parameters used to determine the first transmission power include the parameters in the formula used to calculate the transmission power of the first device transmitting uplink signals and / or channels.

11. The apparatus according to claim 9, wherein, Different second devices have different device types, and / or different information types carried by the first signal, and / or different use cases corresponding to the first signal have different configuration information configuration values, and / or different information elements of the configuration information.

12. The apparatus according to claim 9, wherein, The configuration information is carried by public configuration signaling, dedicated configuration signaling, or group configuration signaling.

13. The apparatus according to claim 9, wherein, The configuration information is related to at least one of the following: Information related to the proximity determination of the second device; Information about the signal receiving power of the second device received by the first device; Information related to path loss of the R2D link measured by the first device; Information regarding the power headroom of the first device.

14. The apparatus according to claim 13, wherein, The transmitter reports one of the following information to the network device via higher-layer signaling or physical-layer signaling: Information related to the proximity determination of the second device; Information about the signal receiving power of the second device received by the first device; Information related to path loss of the R2D link measured by the first device; Information regarding the power headroom of the first device.

15. The apparatus according to claim 13, wherein, The proximity-related information is determined based on the signal energy of D2R received by the first device, or based on the number of nearby or distant second devices.

16. The apparatus according to claim 13, wherein, The road loss is related to the road loss between one second device or to the road loss between multiple second devices.

17. The apparatus according to claim 13, wherein, The information related to road loss is the absolute or maximum value of the measured road loss, or the relative value of the measured road loss to the reference road loss, or the index value corresponding to the measured road loss.

18. The apparatus according to claim 13, wherein, The information related to the power margin includes: The absolute value of the calculated power margin; The index value corresponding to the calculated power margin.

19. The apparatus according to claim 9, wherein, The configuration information is periodically configured for higher-layer signaling, and / or semi-persistently configured, and / or dynamically configured for physical layer signaling; or, the configuration information is reconfigured for higher-layer signaling or physical layer signaling.

20. A signal receiving device, applied to a second device, comprising: A receiver that receives a first signal transmitted by a first device, wherein the first signal is transmitted by the first device at a first transmission power.

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