A method, device and communication system for determining reflected communication signal power

Abstract

The present application relates to a method, device and communication system for determining the power of a reflected communication signal, which are used to improve the efficiency of determining the forward communication power. The method for determining the power of a reflected communication signal is as follows: a receiver receives a first signal from a reflector, the first signal including a first power and a second power, the first power being used for communication between the receiver and the reflector, the second power being the power used when the reflector is activated, and the second power being less than or equal to the first power; after receiving the first signal, the receiver sends a second signal to an exciter, the second signal being used to indicate that the receiver is activated, and the second signal including the second power.

Description

Technical Field

[0001] The present application relates to the field of communication technology, and in particular to a method and device for determining reflected communication signal power, and a communication system. Background Art

[0002] In the process of reflection communication, the forward communication power and the backward communication power may be different. When the exciter and the receiver are located in two different devices, the forward communication and the backward communication are implemented by different devices, and the different devices are located in different positions. At this time, the exciter needs to know whether the forward communication is successful based on whether it receives the signal sent by the receiver, that is, the exciter can only determine whether the forward communication link has been established when it determines that the backward communication is successful. Therefore, after determining the backward communication power, the exciter can determine the forward communication power based on the backward communication power, resulting in low efficiency in determining the forward communication power. Summary of the invention

[0003] The present application provides a method, device and communication system for determining reflected communication signal power, which improves the efficiency of determining forward communication power.

[0004] In a first aspect, an embodiment of the present application provides a method for determining the power of a reflected communication signal, the method comprising: a receiver receives a first signal from a reflector, the first signal comprising a first power and a second power, the first power being used for communication between the receiver and the reflector, the second power being the power used when the reflector is activated, and the second power being less than or equal to the first power; after the receiver receives the first signal, the receiver sends a second signal to an exciter, the second signal being used to indicate that the receiver is activated, and the second signal comprising the second power. Specifically, the second power may be the activation power used when the reflector is activated based on the first power.

[0005] Through the above method, the exciter can determine that the forward communication link and the backward communication link have been established according to the second signal, determine the backward communication power according to the first power, and determine the forward communication power according to the second power. Therefore, the backward communication power and the forward communication power can be determined at the same time through this method, and the determination process of the forward communication power does not depend on the backward communication power, thereby reducing the steps and time for determining the forward communication power and improving the efficiency of determining the forward communication power.

[0006] In one possible design, the second signal may also include the first power.

[0007] In one possible design, the first signal includes the second power, which may specifically mean that the first signal carries first information, and the first information is used to indicate that the reflector is activated based on the second power; or it may mean that the first signal carries second information, and the second information is used to indicate that the reflector is activated based on the second power obtained after the exciter performs at least one power climb.

[0008] In this design, the initial power can activate the reflector and the receiver. If the initial power does not activate the reflector and the receiver, the exciter can perform power ramping on the initial power until the power after the power ramping activates the reflector and the receiver, thereby determining the forward communication power and the backward communication power.

[0009] In one possible design, the second signal includes the second power, which may specifically mean that the second signal carries first information, and the first information is used to indicate that the reflector is activated based on the second power; or it may mean that the second signal carries second information, and the second information is used to indicate that the reflector is activated based on the second power obtained after the exciter performs at least one power climb.

[0010] In a possible design, the first information or the second information may include m, where m may indicate that the second power obtained after the mth power ramp of the exciter activates the reflector, and m is a non-negative integer.

[0011] In this design, if the reflector and receiver are not activated, the exciter can perform power ramping until the power after power ramping activates the reflector and receiver. The receiver sends m to the exciter, and the exciter can determine the second power to activate the reflector based on m, thereby determining the forward communication power.

[0012] In the second aspect, an embodiment of the present application also provides a method for reflecting communication signal power, the method comprising: a reflector receives a third signal sent by an exciter, the third signal comprising a first power, and the first power is used for communication between the exciter to the reflector and the receiver; the reflector sends a first signal to the receiver, the first signal comprising the first power and a second power, the second power being the power used when the reflector is activated, and the second power is less than or equal to the first power.

[0013] Through the above method, the exciter can determine that the forward communication link and the backward communication link have been established according to the second signal, determine the backward communication power according to the first power, and determine the forward communication power according to the second power. Therefore, the backward communication power and the forward communication power can be determined at the same time through this method, and the determination process of the forward communication power does not depend on the backward communication power, thereby reducing the steps and time for determining the forward communication power and improving the efficiency of determining the forward communication power.

[0014] In one possible design, the first signal includes a second power, which may specifically mean that the first signal carries first information, and the first information is used to indicate that the reflector is activated based on the second power; or it may mean that the first signal carries second information, and the second information is used to indicate that the reflector is activated based on a second power obtained after the exciter performs at least one power ramp.

[0015] In this design, the initial power can activate the reflector and the receiver. If the initial power does not activate the reflector and the receiver, the exciter can perform power ramping on the initial power until the power after the power ramping activates the reflector and the receiver, thereby determining the forward communication power and the backward communication power.

[0016] In a possible design, the second information includes m, where m may indicate that the second power obtained after the mth power ramp of the exciter activates the reflector, and m is a non-negative integer.

[0017] In this design, if the reflector and receiver are not activated, the exciter can perform power ramping until the power after power ramping activates the reflector and receiver. The reflector sends m to the receiver, and the receiver sends m to the exciter. The exciter can determine the second power to activate the reflector based on the m, thereby determining the forward communication power.

[0018] In the second aspect, an embodiment of the present application also provides a method for reflecting communication signal power, the method comprising: an exciter sends a third signal to a reflector, the third signal comprising a first power, the first power being used for communication between the exciter and the reflector and a receiver; the exciter receives a second signal fed back by the receiver, the second signal being used to indicate that the receiver is activated, and the second signal comprising a second power, the second power being the power used when the reflector is activated, the second power being less than or equal to the first power; the exciter determines the backward communication power based on the first power; and determines the forward communication power based on the second power.

[0019] Through the above method, the exciter can determine that the forward communication link and the backward communication link have been established according to the second signal, determine the backward communication power according to the first power, and determine the forward communication power according to the second power. Therefore, the backward communication power and the forward communication power can be determined at the same time through this method, and the determination process of the forward communication power does not depend on the backward communication power, thereby reducing the steps and time for determining the forward communication power and improving the efficiency of determining the forward communication power.

[0020] In one possible design, the above method may also include: if the exciter does not receive the second signal fed back by the receiver, the exciter may perform at least one power ramp on the first power, and send an update signal to the reflector after each power ramp, wherein the update signal carries a third power obtained by the latest power ramp, until the feedback signal from the receiver is received, wherein the feedback signal carries a fourth power, wherein the fourth power is the power used when the reflector is activated, and the fourth power is less than or equal to the third power carried in the last update signal sent; the exciter determines the backward communication power based on the third power carried in the last update signal sent; and determines the forward communication power based on the fourth power.

[0021] In this design, if the reflector and the receiver are not activated, the exciter may perform at least one power ramp until the power after the power ramp activates the reflector and the receiver, and the exciter determines the forward communication power and the backward communication power based on the power after the power ramp.

[0022] In a possible design, the second signal includes a second power, which may specifically mean that the second signal carries first information, and the first information is used to indicate that the reflector is activated based on the second power.

[0023] In a possible design, the feedback signal carries a fourth power, which may specifically mean that the feedback signal carries second information, and the second information is used to indicate that the reflector is activated based on the fourth power.

[0024] In one possible design, the second information may include m, where m may indicate that the third power obtained after the mth power ramp of the exciter activates the reflector, the fourth power is the third power obtained after the mth power ramp, and m is a non-negative integer.

[0025] In this design, the reflector can send m to the receiver, and the receiver sends m to the exciter. The exciter can determine the power to activate the reflector based on m, thereby determining the forward communication power.

[0026] In one possible design, the exciter determines the forward communication power based on the second power, which may include: if the first power is the initial power, the exciter may use the power obtained after power ramping down the initial power as the second power, and determine the forward communication power based on the second power.

[0027] In this design, if the initial power activates both the reflector and the receiver, the exciter can perform a power ramp down on the initial power to determine the forward communication power. Usually, the forward communication power is less than or equal to the backward communication power. The exciter performs a power ramp down on the initial power to determine the forward communication power, which can reduce the energy consumption of the exciter in the subsequent communication process and can also reduce the signal interference of the excitation signal to other devices.

[0028] In one possible design, the initial power is determined based on one or more of a power that the receiver expects to receive, a path loss of a forward communication link, or a path loss of a backward communication link.

[0029] In a fourth aspect, an embodiment of the present application further provides a device for reflecting communication signal power, which has the function of an exciter, a reflector or a receiver for implementing the above method, and includes means for executing the steps or functions described in the above method. The steps or functions can be implemented by software, or by hardware (such as a circuit), or by a combination of hardware and software. The exciter or receiver is a network device or a terminal device.

[0030] In a possible design, the above-mentioned device includes one or more processors and a communication unit. The one or more processors are configured to support the device to perform the corresponding functions of the exciter, reflector or receiver in the above-mentioned method.

[0031] Optionally, the device may further include one or more memories, which are coupled to the processor and store program instructions and / or data necessary for the device. The one or more memories may be integrated with the processor or may be separated from the processor. This application is not limited.

[0032] In another possible design, the above device includes a transceiver, a processor and a memory. The processor is used to control the transceiver or the input / output circuit to send and receive signals, the memory is used to store a computer program, and the processor is used to run the computer program in the memory, so that the device executes the method performed by the exciter, reflector or receiver in the first aspect, the second aspect, the third aspect, any possible design in the first aspect, any possible design in the second aspect or any possible design in the third aspect.

[0033] In a possible design, the above-mentioned device includes one or more processors and a communication unit. The one or more processors are configured to support the device to perform the corresponding functions of the exciter, reflector or receiver in the above-mentioned method.

[0034] Optionally, the device may further include one or more memories, which are coupled to the processor and store necessary program instructions and / or data for the exciter, reflector or receiver. The one or more memories may be integrated with the processor or may be separated from the processor. This application is not limited thereto.

[0035] The device may be located in or be the exciter, reflector or receiver.

[0036] In another possible design, the above device includes a transceiver, a processor and a memory. The processor is used to control the transceiver or the input / output circuit to send and receive signals, the memory is used to store a computer program, and the processor is used to run the computer program in the memory, so that the device executes the method performed by the exciter, reflector or receiver in the first aspect, the second aspect, the third aspect, any possible design in the first aspect, any possible design in the second aspect or any possible design in the third aspect.

[0037] In a fifth aspect, an embodiment of the present application also provides a computer-readable storage medium for storing a computer program, wherein the computer program includes instructions for executing the method of the first aspect, the second aspect, the third aspect, any possible design in the first aspect, any possible design in the second aspect, or any possible design in the third aspect.

[0038] In a sixth aspect, an embodiment of the present application further provides a computer program product, comprising: a computer program code, which, when executed on a computer, enables the computer to execute the method in the above-mentioned first aspect, second aspect, third aspect, or any possible implementation of the first aspect, second aspect, third aspect.

[0039] In the seventh aspect, an embodiment of the present application also provides a chip system, which can implement the functions of the first aspect, the second aspect, the third aspect, any possible design in the first aspect, any possible design in the second aspect, or any possible design in the third aspect in the above-mentioned methods through a transceiver, for example, receiving or sending the data and / or information involved in the above-mentioned method through a transceiver. In one possible design, the chip system also includes a memory, which is used to store program instructions and / or data. The chip system can be composed of chips, and can also include chips and other discrete devices.

[0040] In the eighth aspect, an embodiment of the present application also provides a communication system, which includes an exciter, a reflector and a receiver, the receiver is used to implement the method described in the above-mentioned first aspect and any possible design of the first aspect, the reflector is used to implement the above-mentioned second aspect and the method described in any possible design of the second aspect, and the exciter is used to implement the above-mentioned third aspect and the method described in any possible design of the third aspect.

[0041] The technical effects that can be achieved in the fourth to eighth aspects mentioned above can refer to the technical effects that can be achieved in the first, second or third aspects mentioned above, and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] The following is a brief introduction to the drawings required for describing the embodiments.

[0043] Figure 1 A schematic diagram of a communication architecture provided for an embodiment of the present application;

[0044] Figure 2 A schematic diagram of another communication architecture provided in an embodiment of the present application;

[0045] Figure 3 A schematic diagram of the structure of an actuator provided in an embodiment of the present application;

[0046] Figure 4 A schematic diagram of the structure of a reflector provided in an embodiment of the present application;

[0047] Figure 5 A schematic diagram of the structure of another reflector provided in an embodiment of the present application;

[0048] Figure 6 A schematic diagram of the structure of a receiver provided in an embodiment of the present application;

[0049] Figure 7 A schematic diagram of the reflected communication signal power process provided in an embodiment of the present application;

[0050] Figure 8 A schematic diagram of the reflected communication signal power process provided in an embodiment of the present application;

[0051] Fig. 9 A structural diagram of a reflected communication signal power device provided in an embodiment of the present application;

[0052] Fig.10 This is a structural diagram of a reflected communication signal power device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0053] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0054] The present application will present various aspects, embodiments or features around a system that may include multiple devices, components, modules, etc. It should be understood and appreciated that each system may include additional devices, components, modules, etc., and / or may not include all of the devices, components, modules, etc. discussed in conjunction with the figures. In addition, combinations of these schemes may also be used.

[0055] In addition, in the embodiments of the present application, the word "exemplary" is used to indicate an example, illustration or description. Any embodiment or design described as "exemplary" in the present application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of the word "exemplary" is intended to present concepts in a concrete way.

[0056] The network architecture and business scenarios described in the embodiments of the present application are intended to more clearly illustrate the technical solutions of the embodiments of the present application, and do not constitute a limitation on the technical solutions provided in the embodiments of the present application. A person of ordinary skill in the art can appreciate that with the evolution of the network architecture and the emergence of new business scenarios, the technical solutions provided in the embodiments of the present application are also applicable to similar technical problems.

[0057] Some terms used in the embodiments of the present application are explained below to facilitate understanding by those skilled in the art.

[0058] 1) Backscatter communication, a technology that requires a dedicated RF excitation source and additional spectrum resources for communication, is suitable for the extremely low-power, low-cost passive communication field of IoT applications. The reflection communication is also called backscatter communication, passive communication or ambient communication. In some cases (such as when the power supply mode of the reflector is passive), the reflection communication can also be called passive communication.

[0059] The reflection communication system may include an exciter, a reflector and a receiver. In one implementation, Figure 1 As shown, the exciter and the receiver may be located in two different nodes. In another implementation, the exciter and the receiver may be integrated into the same node, such as Figure 2As shown, the exciter and the receiver are integrated in the reader. The communication link between the exciter and the receiver is a through communication link, the communication link between the exciter and the reflector is a forward communication link, and the communication link between the reflector and the receiver is called a backward communication link. The signal used in the forward communication link can be called a forward communication signal. The forward communication link charges the reflector while communicating, that is, the exciter can carry data information for communication while exciting and charging the reflector. Exemplarily, the signal can be an Amplitude Shift Keying (ASK) signal.

[0060] 2) An exciter, which is used to send a wireless signal (also called an energy signal or an excitation signal). The exciter may also be called an excitation communication device, a helper, an interrogator or a reader. The exciter may be a network device or a terminal device.

[0061] like Figure 3 As shown, exemplarily, the exciter may include an exciter excitation signal unit, a power distribution unit and a transmitting signal unit, the exciter excitation signal unit may be used to excite the generation of a wireless signal, the power distribution unit may be used to distribute the power of the wireless signal, and the transmitting signal unit may be used to send the wireless signal with the power distributed by the power distribution unit, that is, the wireless signal includes the power, or the wireless signal carries the power.

[0062] 3) A reflector, which is used to receive the wireless signal sent by the exciter, obtain the power or signal energy in the wireless signal, and carry the reflector's own signal on the reflected signal to achieve signal reflection. The reflector is also called a reflection communication device, a backscatter device, an ambient signal device, a radio frequency identifier, a radio frequency identification (RFID) or a radio frequency tag. When the power supply mode of the reflector is passive, the reflector can also be called a passive device. When the power supply mode of the reflector is semi-active, the reflector can also be called a semi-passive device.

[0063] According to the working mode or capability of the reflector, the power supply mode of the reflector can be divided into passive and semi-active, wherein the passive power supply mode means that the reflector has no external power supply system, and the semi-active power supply mode means that the reflector is connected to a power supply system (such as a battery), and part of the communication process requires power from the power supply system. Both passive and semi-active power supply modes can achieve low-power communication.

[0064] like Figure 4 The figure shows a possible structural diagram of the reflector. The data reflected by the reflector can be an identification (such as a radio frequency identification RFID) or other data (such as temperature data collected by a temperature sensor and / or humidity data collected by a humidity sensor, etc.). When receiving energy, the microprocessor of the reflector is connected to the charging module; when reflecting signals, the microprocessor of the reflector is connected to the reflection module. The microprocessor is used to process received data and reflected data.

[0065] like Figure 5 The figure shows another possible structural schematic diagram of the reflector, in which the reflector may include a reflector data receiving unit, a data detection unit and a data reflection signal unit. The reflector data receiving unit may be used to receive wireless signals, the data detection unit may be used to detect data in the wireless signals, and the data reflection unit may be used to carry the data and the reflector's own signal on the reflection signal and send the reflection signal.

[0066] 4) A receiver, which is used to receive the reflected signal from the reflector and demodulate the data carried by the reflected signal. The receiver is also called a receiving communication device or a receiving apparatus.

[0067] like Figure 6 As shown, exemplarily, the receiver may include a receiver receiving signal unit, a data detection unit and a data sending unit, wherein the receiver receiving signal unit may be used to receive a reflected signal, the data detection unit may be used to demodulate the data carried by the reflected signal, and the data sending unit may be used to send the data to other devices, or to feed back the response information of the data to the exciter. The exciter may be a network device or a terminal device.

[0068] 5) Path loss, also known as path loss, refers to the signal power loss between the sender and the receiver caused by the transmission distance and the transmission environment. It is a quantity that is strongly related to the transmission distance, the transmission environment, and the carrier frequency. It is understandable that in different communication scenarios, the sender and the receiver are not fixed, for example Figure 1In the through communication, the sender may be a receiver and the receiver may be an exciter, in the forward communication, the sender may be an exciter and the receiver may be a reflector, and in the backward communication, the sender may be a reflector and the receiver may be a receiver.

[0069] 6) Network equipment refers to equipment in the access network that communicates with wireless terminal equipment through one or more cells at the air interface. The network equipment may be a node in the wireless access network, which may also be called a base station, or a radio access network (RAN) node (or equipment). At present, some examples of network equipment are: gNB, transmission reception point (TRP), evolved Node B (eNB), radio network controller (RNC), Node B (NB), base station controller (BSC), base transceiver station (BTS), home base station (e.g., home evolved NodeB, or home Node B, HNB), base band unit (BBU), or wireless fidelity (Wifi) access point (AP), etc. In addition, in a network structure, the network equipment may include a centralized unit (CU) node and a distributed unit (DU) node. CU implements some functions of gNB, and DU implements some functions of gNB. For example, CU is responsible for processing non-real-time protocols and services, and implementing the functions of the radio resource control (RRC) and packet data convergence protocol (PDCP) layers. DU is responsible for processing physical layer protocols and real-time services, and implementing the functions of the radio link control (RLC) layer, media access control (MAC) layer, and physical (PHY) layer.

[0070] In an embodiment of the present application, the device for implementing the function of the network device may be a network device, or may be a device that can support the network device to implement the function, such as a chip system, which may be installed in the network device.

[0071] 7) Terminal equipment, including equipment that provides voice and / or data connectivity to users, for example, may include a handheld device with wireless connection function, or a processing device connected to a wireless modem. The terminal equipment can communicate with the core network via a radio access network (RAN) and exchange voice and / or data with the RAN. The terminal equipment may include user equipment (UE), wireless terminal equipment, mobile terminal equipment, device-to-device (D2D) terminal equipment, V2X terminal equipment, machine-to-machine / machine-type communications (M2M / MTC) terminal equipment, Internet of Things (IoT) terminal equipment, subscriber unit, subscriber station, mobile station, remote station, access point (AP), remote terminal, access terminal, user terminal, user agent, or user equipment, etc. For example, it may include mobile phones (or "cellular" phones), computers with mobile terminal devices, portable, pocket-sized, handheld, and computer-built-in mobile devices, etc. For example, personal communication service (PCS) phones, cordless phones, session initiation protocol (SIP) phones, wireless local loop (WLL) stations, personal digital assistants (PDA), and other devices. It also includes limited devices, such as devices with low power consumption, or devices with limited storage capacity, or devices with limited computing power, etc. For example, it includes information sensing devices such as barcodes, radio frequency identification (RFID), sensors, global positioning systems (GPS), laser scanners, etc.

[0072] As an example but not limitation, in the embodiments of the present application, the terminal device may also be a wearable device. Wearable devices may also be referred to as wearable smart devices or smart wearable devices, etc., which are a general term for the application of wearable technology to intelligently design and develop wearable devices for daily wear, such as glasses, gloves, watches, clothing and shoes. A wearable device is a portable device that is worn directly on the body or integrated into the user's clothes or accessories. Wearable devices are not only hardware devices, but also powerful functions achieved through software support, data interaction, and cloud interaction. Broadly speaking, wearable smart devices include full-featured, large-size, and independent of smartphones to achieve complete or partial functions, such as smart watches or smart glasses, etc., as well as those that only focus on a certain type of application function and need to be used in conjunction with other devices such as smartphones, such as various types of smart bracelets, smart helmets, and smart jewelry for vital sign monitoring.

[0073] The various terminal devices introduced above, if located on a vehicle (eg, placed in or installed in a vehicle), can be considered as vehicle-mounted terminal devices, which are also called on-board units (OBU).

[0074] In the embodiment of the present application, the terminal device may also include a relay. Alternatively, it can be understood that anything that can communicate data with the base station can be regarded as a terminal device.

[0075] In the embodiment of the present application, the device for realizing the function of the terminal device can be the terminal device, or it can be a device that can support the terminal device to realize the function, such as a chip system, which can be installed in the terminal device. In the embodiment of the present application, the chip system can be composed of a chip, or it can include a chip and other discrete devices.

[0076] The term "and / or" in this application describes the relationship between associated objects, indicating that three relationships may exist. For example, A and / or B may represent the following three situations: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the associated objects are in an "or" relationship.

[0077] In the present application, at least once refers to one or more times, and multiple times refers to two or more times.

[0078] In addition, it should be understood that, in the description of this application, words such as "first" and "second" are only used for the purpose of distinguishing the description, and cannot be understood as indicating or implying relative importance, nor can they be understood as indicating or implying an order.

[0079] The technical solution of the embodiment of the present application can be applied to the reflection communication system, and the reflection communication system can be applied to the traditional mobile communication system, that is, the reflection communication system can be used in combination with the traditional mobile communication system, for example: the mobile communication system can be a fourth generation (4G) communication system (for example, a long term evolution (LTE) system), a world-wide interoperability for microwave access (WiMAX) communication system, a fifth generation (5G) communication system (for example, a new radio (NR) system), and future mobile communication systems, etc.

[0080] In order to facilitate understanding of the embodiments of the present application, the application scenarios of the embodiments of the present application are explained.

[0081] Generally, during the reflection communication process, the exciter can send a signal to the reflector, the reflector can send a signal to the receiver, and the receiver can send a signal to the exciter, but the reflector cannot send a signal to the exciter. And the power used by the forward communication link (also called the forward communication power) and the power used by the backward communication link (also called the backward communication power) may be different. When the exciter and the receiver are located in two different devices, the forward communication and the backward communication are implemented by different devices, and the positions of the different devices are also different. Then the exciter needs to know whether the forward communication is successful based on whether the signal sent by the receiver is received, that is, the exciter can determine whether the forward communication link has been established when it determines that the backward communication is successful. Therefore, after determining the backward communication power, the exciter can determine the forward communication power based on the backward communication power, resulting in low efficiency in determining the forward communication power.

[0082] In the power allocation method provided in the prior art, power allocation is performed based on a two-point structure of network equipment and terminal, but the reflection communication system is a three-point structure of exciter, reflector and receiver, so the power allocation method in the prior art is not applicable to reflection communication. Therefore, the problem of inefficiency in determining the forward communication power still exists.

[0083] In view of this, in order to improve the efficiency of determining the forward communication power, the present application proposes a method for determining the reflected communication signal power. The forward communication power can be determined in the process of determining the backward communication power. Therefore, after determining the backward power, there is no need to additionally determine the forward power, thereby reducing the steps and time for determining the forward communication power.

[0084] In this method, a receiver receives a first signal from a reflector, the first signal includes a first power and a second power, the second power is an activation power used when the reflector is activated, the first power is used for communication between the receiver and the reflector, and after the receiver receives the first signal, the receiver sends a second signal to an exciter, the second signal is used to indicate that the receiver is activated, and the second signal includes the second power. In this way, the exciter can determine that the forward communication link and the reverse communication link have been established according to the second signal, determine the reverse communication power according to the first power, and determine the forward communication power according to the second power. Therefore, the backward communication power and the forward communication power can be determined simultaneously by this method, and the determination process of the forward communication power does not depend on the backward communication power, thereby reducing the steps and time for determining the forward communication power and improving the efficiency of determining the forward communication power.

[0085] The present invention provides a method for determining the power of a reflected communication signal. Figure 1 and Figure 2 The reflection communication system shown below Figure 7 , the specific process of the method for determining the reflected communication signal power is described in detail.

[0086] like Figure 7 As shown, the process includes:

[0087] S701: The exciter sends a third signal to the reflector, and the reflector receives the third signal, where the third signal includes a first power.

[0088] The first power is used for communication between the exciter and the reflector and the receiver. For example, the first power is used for (forward) communication between the exciter and the reflector, and / or the first power is used for (backward) communication between the reflector and the receiver. The first power can also be expressed as the power used by the current exciter to send the excitation signal.

[0089] The third signal can be understood as an excitation signal, and the exciter attempts to excite the reflector and the receiver through the third signal carrying the first power, so as to establish a forward communication link and a backward communication link, and realize forward communication and backward communication. It can be understood that before S701, the reflector can be in an activated state or in an inactivated state.

[0090] In a possible implementation, the first power is an initial power, and the initial power can be determined according to one or more of the power P0 that the receiver expects to receive, the path loss of the direct communication link, the path loss PL2 of the forward communication link, or the path loss PL1 of the backward communication link. The exciter can be configured with one or more of the power P0 that the receiver expects to receive, the path loss PL1 of the backward communication link, the path loss PL2 of the forward communication link, and the path loss of the direct communication link, wherein the power P0 that the receiver expects to receive can be related to the random access preamble code or the subcarrier spacing. Optionally, the path loss of the direct communication link and the path loss of the backward communication link can be converted to each other, for example, the exciter can directly determine the path loss of the direct communication link as the path loss of the backward communication link, or the exciter can directly determine the path loss of the backward communication link as the path loss of the direct communication link. The network device can indicate the size of PL2 or the size of PL1.

[0091] For example, the exciter may determine the power P0 that the receiver expects to receive as the initial power. For another example, the exciter may comprehensively consider the power and path loss that the receiver expects to receive, and according to P0, PL1 and PL2, may determine the initial power PP as min{Pmax, P0+PL1+PL2+Delta1}, that is, take the minimum value between Pmax and P0+PL1+PL2+Delta1 as the initial power PP. For another example, when setting the power that the receiver expects to receive, the path loss of the forward communication link is taken into account, that is, here P0 = the power that the above receiver expects to receive + PL2, and the exciter may determine the initial power PP as min{Pmax, P0+PL1+Delta1} according to P0 and PL1, that is, take the minimum value between Pmax and P0+PL1+Delta1 as the initial power PP. Among them, Delta1 is an optional parameter, representing one or more power factors, and Pmax represents the maximum power sent by the terminal device.

[0092] In another possible implementation, the first power may also be the power obtained after the exciter performs at least one power ramp. Generally, when the exciter uses the initial power to send the third signal, it may not be able to receive the second signal fed back by the receiver. Therefore, the exciter may perform at least one power ramp on the initial power, and send an update signal to the reflector after each power match. The update signal carries the third power obtained by the latest power ramp until the feedback signal from the receiver is received. The feedback signal carries a fourth power, which is the activation power used when the reflector is activated. The fourth power is less than or equal to the third power carried in the last update signal sent. The update signal can be understood as the updated third signal, and the third power obtained by the latest power match carried in the update signal can be understood as the updated first power carried by the updated third signal. The feedback signal can be understood as the second signal sent by the receiver for the updated third signal. The power ramp indicates that the power is increased. Each time the excitation signal is sent, the power of the transmitted signal is greater than a certain value than the power of the previous excitation signal. The value can be fixed or non-fixed.

[0093] When the exciter performs power ramping, it can perform power ramping on the initial power or the power obtained by the latest power ramping. For example, the power ramping process can satisfy the following formula: P1=PP+(Na)*DeltaP+delta2, where P1 is the power obtained after power ramping, PP is the initial power, N indicates that the current power ramping is the Nth time, N is a non-negative integer, a, DeltaP and delta2 are preset values, DeltaP is the power ramping factor, delta2 is other power factors except the power ramping factor, delta2 is an optional parameter, for example, delta2 is a power factor related to the rate of the random access preamble. If the exciter performs power ramping on the initial power, N=0; if the exciter performs power ramping on the power obtained by the latest power ramping, N=the number of current power ramping-1, for example, the exciter performs power ramping on the power obtained by the second power ramping, that is, the exciter is currently performing the third power ramping, N=3-1=2. a can be any value. For example, a is any integer, for example, a is 1.

[0094] The above two possible implementation methods can be used in combination. For the specific process, please refer to the following Figure 8 As shown below, Figure 8 The process shown is described in detail.

[0095] The first power implies the power used to excite the reflector, so after the reflector receives the third signal, it can be activated according to the first power carried in the third signal. If the reflector is activated, the reflector can determine that the first power is the activation power used when the reflector is activated. For ease of distinction, in the embodiment of the present application, the activation power used when the reflector is activated is described as the second power. Specifically, the second power is the activation power used when the reflector is activated based on the first power. The first and / or second power can be an index value. When it is an index value, it can represent the excitation signal sent for the nth time, or it can be a specific value, which represents the power of sending the third signal.

[0096] S702: The reflector sends a first signal to the receiver, and the receiver receives the first signal, where the first signal includes / carries the first power and the second power, where the second power is the activation power used when the reflector is activated, and the second power is less than or equal to the first power.

[0097] If the reflector is activated, the reflector sends a first signal to the receiver, the first signal including the first power and the second power. Exemplarily, the reflector modulates the second power onto the first signal. If the first power does not activate the reflector, the reflector does not send the first signal to the receiver.

[0098] The first signal can be understood as a reflected signal of the third signal, that is, the reflector reflects the third signal to obtain the first signal. The first signal includes a first power and a second power. The second power can be an initial power, or the second power can be a power obtained by power ramping the exciter. Generally, the second power used for forward communication is less than or equal to the first power used for backward communication.

[0099] Optionally, the first signal carries first information, and the first information is used to indicate that the reflector is activated based on the second power; or the first signal carries second information, and the second information is used to indicate that the reflector is activated based on the second power (i.e., the fourth power) obtained after the exciter performs at least one power ramp. Exemplarily, the first information or the second information includes m, where m is the power index value of the forward communication, and m is used to indicate that the second power obtained after the mth power ramp of the exciter activates the reflector, and m is a non-negative integer. If the initial power activates the reflector, then m=0.

[0100] S703: The receiver sends a second signal to the exciter, and the exciter receives the second signal, where the second signal is used to indicate that the receiver is activated, and the second signal includes the second power.

[0101] If the first power successfully activates the receiver, the receiver will send a second signal to the exciter, which can inform the exciter that the receiver has been activated or the receiver has received a signal reflected by the reflector, and the forward communication link and the backward communication link have been established, so that the exciter can determine the backward communication power according to the first power. In addition, the second signal includes the second power, so that the exciter can determine the forward communication power according to the second power, so as to determine the forward communication power in the process of determining the backward communication power.

[0102] If the first power does not activate the receiver, the receiver will not send the second signal to the exciter. Therefore, if the exciter receives the second signal sent by the receiver, the exciter can determine that the reflector and the receiver are activated.

[0103] Optionally, the second signal may also include the first power.

[0104] Exemplarily, the second signal includes the second power, which can be achieved by the second signal carrying first information, the first information being used to indicate that the reflector is activated based on the second power; or by the second signal carrying second information, the second information being used to indicate that the reflector is activated based on a second power (i.e., a fourth power) obtained after the exciter performs at least one power ramp on the first power. Exemplarily, the first information or the second information includes m, where m is a power index value for forward communication, and m is used to indicate that the reflector is activated by the second power obtained after the mth power ramp of the exciter, and m is a non-negative integer. If the initial power activates the reflector, then m=0.

[0105] S704: The exciter determines a backward communication power according to the first power; and determines a forward communication power according to the second power.

[0106] In a possible implementation manner, the exciter may directly determine the first power as the backward communication power, and directly determine the second power as the forward communication power.

[0107] In another possible implementation, the exciter may perform power ramping or power down ramping on the first power to determine the backward communication power, and perform power ramping or power down ramping on the second power to determine the forward communication power. For example, if the first power is the initial power, the exciter may perform power down ramping on the initial power to determine the forward communication power.

[0108] For example, the power downslope process may satisfy the following formula: P2=PP-(Mb)*DeltaQ+delta3, wherein P2 is the power obtained after power downslope of the PP, PP is the initial power, M indicates that the power downslope is currently the Mth time, M is a non-negative integer, b, DeltaQ and delta3 are preset values, DeltaQ is a power downslope factor, delta3 is a power factor other than the power downslope factor, delta3 is an optional parameter, for example, delta3 is a power factor related to the rate of the random access preamble code. b may be any value, for example, b is any integer, for example, b is 1.

[0109] In addition, as shown in S701, if the exciter does not receive the second signal fed back by the receiver, the exciter performs power ramping on the first power n times, and sends an update signal to the reflector after each power ramping, the update signal carrying the third power obtained by the latest power ramping, until the feedback signal from the receiver is received, the feedback signal carries a fourth power, the fourth power is the activation power used when the reflector is activated, the fourth power is less than or equal to the third power carried in the last update signal sent, n is a positive integer, and m is less than or equal to n. The exciter can determine the backward communication power based on the third power carried in the last update signal sent; and determine the forward communication power based on the fourth power. Optionally, the feedback signal carries a fourth power, including: the feedback signal carries second information, and the second information is used to indicate that the reflector has been activated based on the fourth power.

[0110] After the exciter determines the forward communication power and the backward communication power, in the subsequent communication process, the exciter can communicate with the reflector according to the forward communication power, which can reduce the energy consumption of the exciter and reduce the signal interference of the excitation signal to other devices.

[0111] Below Figure 8 Taking as an example, the process of determining the reflected communication signal power is described in detail, including the following steps:

[0112] S801: The exciter determines the initial power as the first power.

[0113] S802: The exciter sends a third signal to the reflector, wherein the third signal includes the first power. The first power is used to excite the reflector and the receiver.

[0114] S803: After receiving the third signal, the reflector determines whether the first power activates the reflector; if yes, proceed to S804; if not, proceed to S805.

[0115] S804: The reflector performs activation processing according to the first power, and determines the power used when the reflector is activated as the second power. The transmitter sends a first signal, and the first signal includes the first power and the second power; wherein the second power is less than the first power; and then performs S806.

[0116] S805: The reflector does not send the first signal; proceed to S810.

[0117] S806: After receiving the first signal, the receiver determines whether the first power activates the receiver; if yes, proceed to S807; if no, proceed to S808.

[0118] S807: The receiver sends a second signal, the second signal includes the second power, and proceeds to S809. The second signal is used to indicate that the receiver is activated.

[0119] S808: The receiver does not send the second signal; and proceeds to S810.

[0120] S809: The exciter determines a backward communication power according to the first power; and determines a forward communication power according to the second power.

[0121] S810: The exciter performs power ramping on the first power, and updates the first power using the power after the power ramping; and returning to S802.

[0122] For example, if the exciter sends a third signal carrying the initial power, the exciter receives a second signal fed back by the receiver, and the power index value m of the forward communication carried in the second signal is 0, the exciter can determine the initial power as the backward communication power, and the exciter can also perform power down-ramp on the initial power to determine the forward communication power.

[0123] For another example, if the exciter sends a third signal carrying the initial power, the exciter does not receive the second signal fed back by the receiver; the power obtained by the exciter during the 1st to 4th power ramps does not activate the reflector, and the exciter does not receive the second signal fed back by the reflector; the exciter performs the 5th power ramp to obtain power P1, if P1 activates the reflector but does not activate the receiver, the exciter does not receive the second signal fed back by the reflector; when the exciter performs the 6th to 10th power ramps, after each power ramp, the power obtained by each power ramp is carried in the third signal, and each time the reflector receives the third signal, it modulates the power index value 5 of the forward communication on the first signal and sends the first signal to the reflector; if the power P2 obtained until the 10th power ramp activates the receiver, the receiver sends a second signal to the exciter, and the second signal carries the power index value 5 of the forward communication and the power P2 obtained by the 10th power ramp. The exciter determines the power P1 at the fifth power ramp according to the power index value 5 of the forward communication, determines the forward communication power according to the power P1, and determines the backward communication power according to the P2.

[0124] Combination of the above Figures 1 to 8 The method for determining the power of a reflected communication signal in an embodiment of the present application is described in detail. Based on the same technical concept as the above-mentioned method for determining the power of a reflected communication signal, an embodiment of the present application also provides a device for determining the power of a reflected communication signal, such as Fig. 9 As shown, the reflected communication signal power determination 900 includes a processing unit 901 and a transceiver unit 902, and the device 900 can be used for the method described in the above method embodiment applied to a transceiver, a reflector or an exciter.

[0125] In one embodiment, the device 900 can be applied to a transceiver. Specifically, the processing unit 901 is used to receive a first signal reflected by a reflector through a transceiver unit 902, the first signal including a first power and a second power, the first power is used for communication between a receiver and the reflector, the second power is the power used when the reflector is activated, and the second power is less than or equal to the first power; and send a second signal to an exciter through the transceiver unit 902, the second signal including the second power, and the second signal is used to indicate that the receiver is activated.

[0126] In one implementation, the second signal may further include the first power.

[0127] Specifically, the first signal includes the second power, and the first signal may carry first information, wherein the first information is used to indicate that the reflector is activated based on the second power; or the first signal may carry second information, wherein the second information is used to indicate that the reflector is activated based on a second power obtained after the exciter performs at least one power ramp.

[0128] Specifically, the second signal includes the second power, and the second signal may carry first information, wherein the first information is used to indicate that the reflector is activated based on the second power; or the second signal may carry second information, wherein the second information is used to indicate that the reflector is activated based on a second power obtained after the exciter performs at least one power ramp.

[0129] In one implementation, the second information may be m, where m indicates that the second power obtained after the mth power ramp of the exciter activates the reflector, and m is a non-negative integer.

[0130] In another embodiment, the device 900 can also be applied to a reflector. Specifically, the processing unit 901 is used to receive a third signal sent by the exciter through the transceiver unit 902, the third signal including a first power, the first power being used for communication between the exciter to the reflector and the receiver; and to send a first signal to the receiver through the transceiver unit 902, the first signal including the first power and a second power, the second power being the power used when the reflector is activated, and the second power being less than or equal to the first power.

[0131] Specifically, the first signal includes a second power, and the first signal may carry first information, the first information being used to indicate that the reflector is activated based on the second power; or the first signal may carry second information, the second information being used to indicate that the reflector is activated based on a second power obtained after the exciter performs at least one power ramp.

[0132] Exemplarily, the second information may be m, where m indicates that the second power obtained after the mth power ramp of the exciter activates the reflector, and m is a non-negative integer.

[0133] In another embodiment, the device 900 can also be applied to an exciter. Specifically, the transceiver unit 902 is used to send a third signal to the reflector, the third signal includes a first power, the first power is used for communication between the exciter to the reflector and the receiver; and receive a second signal fed back by the receiver, the second signal is used to indicate that the receiver is activated, and the second signal includes a second power, the second power is the power used when the reflector is activated, and the second power is less than or equal to the first power; the processing unit 901 is used to determine the backward communication power according to the first power; and determine the forward communication power according to the second power.

[0134] In one implementation, the processing unit 901 may also perform at least one power ramp on the first power when the transceiver unit 902 does not receive the second signal fed back by the receiver, and send an update signal to the reflector through the transceiver unit 902 after each power ramp, wherein the update signal carries a third power obtained by the latest power ramp, until the feedback signal of the receiver is received through the transceiver unit 902, wherein the feedback signal carries a fourth power, wherein the fourth power is the power used when the reflector is activated, and the fourth power is less than or equal to the third power carried in the last update signal sent; and determine the backward communication power based on the third power carried in the last update signal sent; and determine the forward communication power based on the fourth power.

[0135] In one implementation, the second signal includes a second power, and the second signal may carry first information, where the first information is used to indicate that the reflector is activated based on the second power.

[0136] In one implementation, the feedback signal carries the fourth power, and the feedback signal may carry second information, where the second information is used to indicate that the reflector is activated based on the fourth power.

[0137] In one implementation, the second information may be m, where m indicates that the third power obtained after the mth power ramp of the exciter activates the reflector, the fourth power is the third power obtained after the mth power ramp, and m is a non-negative integer.

[0138] In one implementation, if the first power is the initial power, when the processing unit 901 determines the forward communication power based on the second power, it can specifically perform power downscaling on the initial power, and use the power obtained after the power downscaling as the second power, and then use the second power to determine the forward communication power.

[0139] Exemplarily, the initial power may be determined based on, but not limited to, one or more of the power that the receiver expects to receive, the path loss of the forward communication link, or the path loss of the backward communication link, which is not limited in the present application.

[0140] It should be noted that the division of modules in the embodiments of the present application is schematic and is only a logical function division. There may be other division methods in actual implementation. In addition, the functional units in the various embodiments of the present application may be integrated into a processing unit, or may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated units may be implemented in the form of hardware or in the form of software functional units. For example, the above-mentioned Figure 3 , Figure 5 and Figure 6 .

[0141] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application is essentially or the part that contributes to the prior art or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions to enable a computer device (which can be a personal computer, a server, or a network device, etc.) or a processor (processor) to perform all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), disk or optical disk and other media that can store program codes.

[0142] Based on the same technical concept as the above-mentioned method for determining the power of the reflected communication signal, Fig.10 As shown, the embodiment of the present application also provides a schematic diagram of the structure of a device 1000 for determining reflected communication signal power. The device 1000 can be used to implement the method described in the above method embodiment applied to a receiver, reflector or exciter, and the description in the above method example can be referred to.

[0143] The device 1000 includes one or more processors 1001. The processor 1001 may be a general-purpose processor or a dedicated processor, etc. For example, it may be a baseband processor or a central processing unit. The baseband processor may be used to process the communication protocol and communication data, and the central processing unit may be used to control the communication device (such as a base station, a terminal, or a chip, etc.), execute the software program, and process the data of the software program. The communication device may include a transceiver unit to realize the input (reception) and output (transmission) of the signal. For example, the transceiver unit may be a transceiver, a radio frequency chip, etc.

[0144] The device 1000 includes one or more processors 1001, and the one or more processors 1001 can implement the methods of the receiver, reflector or exciter in the above-mentioned embodiments.

[0145] Optionally, the processor 1001 may implement other functions in addition to implementing the method of the embodiment shown above.

[0146] Optionally, in one design, the processor 1001 may execute instructions so that the apparatus 1000 executes the method described in the above method embodiment. The instructions may be stored in whole or in part in the processor, such as instruction 1003, or may be stored in whole or in part in a memory 1002 coupled to the processor, such as instruction 1004, or instructions 1003 and 1004 may be used together to cause the apparatus 1000 to execute the method described in the above method embodiment.

[0147] In yet another possible design, the communication device 1000 may also include a circuit, which may implement the functions of the receiver, reflector, or exciter in the aforementioned method embodiment.

[0148] In another possible design, the device 1000 may include one or more memories 1002, on which instructions 1004 are stored, and the instructions can be executed on the processor so that the device 1000 performs the method described in the above method embodiment. Optionally, data can also be stored in the memory. Instructions and / or data can also be stored in the optional processor. For example, the one or more memories 1002 can store the corresponding relationships described in the above embodiments, or the relevant parameters or tables involved in the above embodiments. The processor and memory can be set separately or integrated together.

[0149] In another possible design, the device 1000 may further include a transceiver 1005 and an antenna 1006. The processor 1001 may be referred to as a processing unit, which controls the device (terminal or base station). The transceiver 1005 may be referred to as a transceiver, a transceiver circuit, or a transceiver unit, etc., which is used to implement the transceiver function of the device through the antenna 1006.

[0150] It should be noted that the processor in the embodiment of the present application can be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the above method embodiment can be completed by the hardware integrated logic circuit or software instructions in the processor. The above processor can be a general processor, a digital signal processor (DigitalSignal Processor, DSP), an application-specific integrated circuit (Application Specific Integrated Circuit, ASIC), a field programmable gate array (Field Programmable Gate Array, FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components. The disclosed methods, steps and logic block diagrams in the embodiments of the present application can be implemented or executed. The general processor can be a microprocessor or the processor can also be any conventional processor, etc. The steps of the method disclosed in the embodiment of the present application can be directly embodied as a hardware decoding processor to perform, or the hardware and software modules in the decoding processor are combined and performed. The software module can be located in a mature storage medium in the field such as a random access memory, a flash memory, a read-only memory, a programmable read-only memory or an electrically erasable programmable memory, a register, etc. The storage medium is located in a memory, and the processor reads the information in the memory and completes the steps of the above method in combination with its hardware.

[0151] It can be understood that the memory in the embodiments of the present application can be a volatile memory or a non-volatile memory, or can include both volatile and non-volatile memories. Among them, the non-volatile memory can be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory can be a random access memory (RAM), which is used as an external cache. By way of example and not limitation, many forms of RAM are available, such as static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), and direct RAM bus random access memory (DR RAM). It should be noted that the memory of the systems and methods described herein is intended to include, but is not limited to, these and any other suitable types of memory.

[0152] An embodiment of the present application also provides a computer-readable medium having a computer program stored thereon, which, when executed by a computer, implements the method for determining the power of a reflected communication signal as described in any of the above method embodiments applied to a receiver, a reflector or an exciter.

[0153] An embodiment of the present application also provides a computer program product, which, when executed by a computer, implements the method for determining the power of a reflected communication signal as described in any of the above method embodiments applied to a receiver, a reflector or an exciter.

[0154] In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented using software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer instructions are loaded and executed on a computer, the process or function described in the embodiment of the present application is generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. The computer instructions can be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions can be transmitted from a website site, computer, server or data center by wired (e.g., coaxial cable, optical fiber, digital subscriber line (Digital Subscriber Line, DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) mode to another website site, computer, server or data center. The computer-readable storage medium can be any available medium that a computer can access or a data storage device such as a server, data center, etc. that contains one or more available media integrated. The available medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a high-density digital video disc (DVD)), or a semiconductor medium (eg, a solid state disk (SSD)).

[0155] An embodiment of the present application also provides a device for determining the power of a reflected communication signal, including a processor and an interface; the processor is used to execute the method for determining the power of a reflected communication signal described in any one of the method embodiments applied to a receiver, a reflector or an exciter.

[0156] It should be understood that the above-mentioned reflected communication signal power determination device can be a chip, and the processor can be implemented by hardware or by software. When implemented by hardware, the processor can be a logic circuit, an integrated circuit, etc.; when implemented by software, the processor can be a general-purpose processor, which is implemented by reading the software code stored in the memory. The memory can be integrated in the processor, or can be located outside the processor and exist independently.

[0157] The present application also provides a communication system, which includes an exciter, a reflector and a receiver having the above functions, and is used to perform the method for determining the power of a reflected communication signal as described in any method embodiment applied to the receiver, the reflector or the exciter. Figure 1 or Figure 2 As shown, please refer to the previous description for details, which will not be repeated here.

[0158] Those of ordinary skill in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of the two. In order to clearly illustrate the interchangeability of hardware and software, the composition and steps of each example have been generally described in terms of function in the above description. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0159] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0160] In the several embodiments provided in the present application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic, for example, the division of units is only a logical function division, and there may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed can be an indirect coupling or communication connection through some interfaces, devices or units, or it can be an electrical, mechanical or other form of connection.

[0161] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the embodiments of the present application.

[0162] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0163] Through the description of the above embodiments, it is clear to the technicians in the field that the present application can be implemented by hardware, firmware, or a combination thereof. When software is used for implementation, the above functions can be stored in a computer-readable medium or transmitted as one or more instructions or codes on a computer-readable medium. Computer-readable media include computer storage media and communication media, wherein the communication media include any medium that is convenient for transmitting a computer program from one place to another. The storage medium can be any available medium that a computer can access. Take this as an example but not limited to: the computer-readable medium can include RAM, ROM, EEPROM, CD-ROM or other optical disk storage, disk storage medium or other magnetic storage device, or any other medium that can be used to carry or store the desired program code in the form of an instruction or data structure and can be accessed by a computer. In addition. Any connection can be appropriately a computer-readable medium. For example, if the software is transmitted from a website, a server or other remote source using a coaxial cable, an optical fiber cable, a twisted pair, a digital subscriber line (DSL), or wireless technologies such as infrared, radio, and microwaves, then the coaxial cable, optical fiber cable, twisted pair, DSL, or wireless technologies such as infrared, wireless, and microwaves are included in the fixing of the medium. As used in this application, disk and disc include compact disc (CD), laser disc, optical disc, digital versatile disc (DVD), floppy disk and blue-ray disc, wherein disk usually reproduces data magnetically, while disc uses laser to reproduce data optically. The above combinations should also be included in the scope of protection of computer-readable media.

[0164] In short, the above is only a preferred embodiment of the technical solution of this application, and is not intended to limit the protection scope of this application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of this application should be included in the protection scope of this application.

Claims

1. A method for determining reflected communication signal power, characterized in that: include: The receiver receives a first signal reflected by a reflector, the first signal including a first power and a second power, the first power is used for communication between the receiver and the reflector, the second power is the power used when the reflector is activated, and the second power is less than or equal to the first power; After receiving the first signal, the receiver sends a second signal to the exciter, where the second signal includes the second power and is used to indicate that the receiver is activated.

2. The method according to claim 1, characterized in that The second signal also includes the first power.

3. The method according to claim 1, characterized in that The first signal includes the second power, including: The first signal carries first information, where the first information is used to indicate that the reflector is activated based on the second power; or The first signal carries second information, where the second information is used to indicate that the reflector is activated based on a second power obtained after the exciter performs at least one power ramp.

4. The method according to claim 1, characterized in that The second signal includes the second power, including: The second signal carries first information, where the first information is used to indicate that the reflector is activated based on the second power; or The second signal carries second information, where the second information is used to indicate that the reflector is activated based on a second power obtained after the exciter performs at least one power ramp.

5. The method according to claim 3 or 4, characterized in that The second information includes m, where m indicates that the second power obtained after the exciter has ramped up its power for the mth time activates the reflector, and m is a non-negative integer.

6. A method for determining reflected communication signal power, characterized in that: include: The reflector receives a third signal sent by the exciter, wherein the third signal includes a first power, and the first power is used for communication between the exciter and the reflector and the receiver; The reflector sends a first signal to the receiver, where the first signal includes the first power and a second power, where the second power is the power used when the reflector is activated, and the second power is less than or equal to the first power.

7. The method according to claim 6, characterized in that The first signal includes a second power, including: The first signal carries first information, where the first information is used to indicate that the reflector is activated based on the second power; or The first signal carries second information, where the second information is used to indicate that the reflector is activated based on a second power obtained after the exciter performs at least one power ramp.

8. The method according to claim 7, characterized in that The second information includes m, where m indicates that the second power obtained after the exciter has ramped up its power for the mth time activates the reflector, and m is a non-negative integer.

9. A method for determining reflected communication signal power, characterized in that: include: The exciter sends a third signal to the reflector, the third signal comprising a first power, the first power being used for communication between the exciter to the reflector and the receiver; The exciter receives a second signal fed back by the receiver, where the second signal is used to indicate that the receiver is activated, and the second signal includes a second power, where the second power is the power used when the reflector is activated, and the second power is less than or equal to the first power; The exciter determines the backward communication power according to the first power, and determines the forward communication power according to the second power.

10. The method according to claim 9, characterized in that Also includes: If the exciter does not receive the second signal fed back by the receiver, the exciter performs power ramping on the first power at least once, and sends an update signal to the reflector after each power ramping, wherein the update signal carries a third power obtained by the latest power ramping, until a feedback signal from the receiver is received, wherein the feedback signal carries a fourth power, wherein the fourth power is the power used when the reflector is activated, and the fourth power is less than or equal to the third power carried in the last update signal sent; The exciter determines the backward communication power according to the third power carried in the last sent update signal; and determines the forward communication power according to the fourth power.

11. The method according to claim 9, characterized in that The second signal includes a second power, including: The second signal carries first information, where the first information is used to indicate that the reflector is activated based on the second power.

12. The method according to claim 10, characterized in that The feedback signal carries a fourth power, including: The feedback signal carries second information, where the second information is used to indicate that the reflector is activated based on the fourth power.

13. The method according to claim 12, characterized in that The second information includes m, where m indicates that the third power obtained after the exciter has ramped up for the mth time activates the reflector, the fourth power is the third power obtained after the mth power ramping, and m is a non-negative integer.

14. The method according to any one of claims 9 to 13, characterized in that: The exciter determines the forward communication power according to the second power, including: If the first power is the initial power, the exciter uses the power obtained by performing power downscaling on the initial power as the second power, and determines the forward communication power according to the second power.

15. A device for determining reflected communication signal power, characterized in that: including a processing unit and a transceiver unit; The processing unit is configured to receive, through the transceiver unit, a first signal reflected by the reflector, the first signal including a first power and a second power, the first power being used for communication between the receiver and the reflector, the second power being a power used when the reflector is activated, and the second power being less than or equal to the first power; as well as A second signal is sent to the exciter through the transceiver unit, where the second signal includes the second power, and the second signal is used to indicate that the receiver is activated.

16. The device according to claim 15, characterized in that The second signal also includes the first power.

17. The device according to claim 15, characterized in that The first signal includes the second power, including: The first signal carries first information, where the first information is used to indicate that the reflector is activated based on the second power; or The first signal carries second information, where the second information is used to indicate that the reflector is activated based on a second power obtained after the exciter performs at least one power ramp.

18. The device according to claim 15, characterized in that The second signal includes the second power, including: The second signal carries first information, where the first information is used to indicate that the reflector is activated based on the second power; or The second signal carries second information, where the second information is used to indicate that the reflector is activated based on a second power obtained after the exciter performs at least one power ramp.

19. The device according to claim 17 or 18, characterized in that The second information includes m, where m indicates that the second power obtained after the exciter has ramped up its power for the mth time activates the reflector, and m is a non-negative integer.

20. A device for determining reflected communication signal power, characterized in that: including a processing unit and a transceiver unit; The processing unit is used to receive a third signal sent by the exciter through the transceiver unit, wherein the third signal includes a first power, and the first power is used for communication between the exciter and the reflector and the receiver; as well as A first signal is sent to the receiver through the transceiver unit, where the first signal includes the first power and a second power, where the second power is the power used when the reflector is activated, and the second power is less than or equal to the first power.

21. The device according to claim 20, characterized in that The first signal includes a second power, including: The first signal carries first information, where the first information is used to indicate that the reflector is activated based on the second power; or The first signal carries second information, where the second information is used to indicate that the reflector is activated based on a second power obtained after the exciter performs at least one power ramp.

22. The device according to claim 21, characterized in that The second information includes m, where m indicates that the second power obtained after the exciter has ramped up its power for the mth time activates the reflector, and m is a non-negative integer.

23. A device for determining reflected communication signal power, characterized in that: including a processing unit and a transceiver unit; The transceiver unit is used to send a third signal to the reflector, the third signal includes a first power, and the first power is used for communication between the exciter to the reflector and the receiver; and receiving a second signal fed back by the receiver, where the second signal is used to indicate that the receiver is activated, and the second signal includes a second power, where the second power is the power used when the reflector is activated, and the second power is less than or equal to the first power; A processing unit is used to determine a backward communication power according to the first power; and to determine a forward communication power according to the second power.

24. The device according to claim 23, characterized in that The processing unit is further used for: When the transceiver unit does not receive the second signal fed back by the receiver, the first power is power climbed at least once, and an update signal is sent to the reflector through the transceiver unit after each power climb, wherein the update signal carries a third power obtained by the latest power climb, until a feedback signal from the receiver is received through the transceiver unit, wherein the feedback signal carries a fourth power, wherein the fourth power is the power used when the reflector is activated, and the fourth power is less than or equal to the third power carried in the update signal sent last time; as well as The backward communication power is determined according to the third power carried in the update signal sent last time; and the forward communication power is determined according to the fourth power.

25. The device according to claim 23, characterized in that The second signal includes a second power, including: The second signal carries first information, where the first information is used to indicate that the reflector is activated based on the second power.

26. The device according to claim 24, characterized in that The feedback signal carries a fourth power, including: The feedback signal carries second information, where the second information is used to indicate that the reflector is activated based on the fourth power.

27. The device according to claim 26, characterized in that The second information includes m, where m indicates that the third power obtained after the exciter has ramped up for the mth time activates the reflector, the fourth power is the third power obtained after the mth power ramping, and m is a non-negative integer.

28. The device according to any one of claims 23 to 27, characterized in that When the processing unit determines the forward communication power according to the second power, it is specifically used to: If the first power is the initial power, the power obtained by performing power downscaling on the initial power is used as the second power, and the forward communication power is determined according to the second power.

29. A computer-readable storage medium, characterized in that: The method comprises a program or an instruction. When the program or the instruction is run on a computer, the method according to any one of claims 1 to 5, the method according to any one of claims 6 to 8, or the method according to any one of claims 9 to 14 is executed.

30. A communication system, characterized in that: The communication system includes a reflected communication signal power determination device as described in any one of claims 15-19, a reflected communication signal power determination device as described in any one of claims 20-22, and a reflected communication signal power determination device as described in any one of claims 23-28.

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