CN113411092A

CN113411092A - Method and device for determining power of reflected communication signal and communication system

Info

Publication number: CN113411092A
Application number: CN202010132615.5A
Authority: CN
Inventors: 高宽栋; 颜矛; 黄煌
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2020-02-29
Filing date: 2020-02-29
Publication date: 2021-09-17
Also published as: WO2021169843A1

Abstract

The application relates to a method, a device and a communication system for determining reflected communication signal power, which are used for improving the efficiency of determining forward communication power, and the method for determining the reflected communication signal power comprises the following steps: a receiver receives a first signal of 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 a power used when the reflector is activated, the second power being less than or equal to the first power; and after receiving the first signal, the receiver sends a second signal to an exciter, wherein the second signal is used for indicating that the receiver is activated, and the second signal comprises the second power.

Description

Method and device for determining power of reflected communication signal and communication system

Technical Field

The present application relates to the field of communications technologies, and in particular, to a method, an apparatus, and a communication system for determining reflected communication signal power.

Background

During reflected communications, the forward and backward communication powers may be different, and when the exciter and the receiver are located in different two different devices, the forward and backward communications are performed using different devices that are located in different locations. In this case, the exciter needs to know whether forward communication is successful according to whether a signal transmitted by the receiver is received, that is, the exciter determines whether a forward communication link is established when determining that backward communication is successful. Therefore, the exciter determines the backward communication power and then determines the forward communication power based on the backward communication power, which results in inefficient determination of the forward communication power.

Disclosure of Invention

The application provides a method, a device and a communication system for determining reflected communication signal power, which improve the efficiency of determining forward communication power.

In a first aspect, an embodiment of the present application provides a method for determining a power of a reflected communication signal, where the method includes: a receiver receives a first signal of 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 a power used when the reflector is activated, 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 is used for indicating that the receiver is activated, and the second signal comprises the second power. Specifically, the second power may be an activation power used when the reflector is activated based on the first power.

By the above method, the exciter may determine that a forward communication link and a backward communication link have been established based on the second signal, determine a backward communication power based on the first power, and determine a forward communication power based on the second power. Therefore, the method can simultaneously determine the backward communication power and the forward communication power, and the determination process of the forward communication power is independent of the backward communication power, thereby reducing the steps and time for determining the forward communication power and improving the efficiency for determining the forward communication power.

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

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

In this design, the initial power may activate the reflector and the receiver, and if the initial power does not activate the reflector and the receiver, the exciter may power ramp the initial power until the power after the power ramp activates the reflector and the receiver, thereby determining the forward communication power and the backward communication power.

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

In one possible design, the first information or the second information may include m, where m may indicate that the reflector is activated by a second power obtained after the m-th power ramp of the exciter, and m is a non-negative integer.

In this design, the exciter may ramp up in power if the reflector and receiver are not activated, until the power after the power ramp activates the reflector and receiver, the receiver sends m to the exciter, and the exciter may determine a second power to activate the reflector based on the m, thereby determining the forward communication power.

In a second aspect, an embodiment of the present application further provides a method for reflecting communication signal power, where the method includes: a reflector receives a third signal transmitted by an exciter, wherein the third signal comprises a first power, and the first power is used for communication between the exciter to the reflector and a receiver; the reflector sends a first signal to the receiver, wherein the first signal comprises the first power and a second power, the second power is used when the reflector is activated, and the second power is smaller than or equal to the first power.

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

In one possible design, the second information includes m, where m may indicate that the reflector is activated by a second power obtained after the m-th power ramp of the exciter, and m is a non-negative integer.

In this design, if the reflector and receiver are not activated, the exciter may ramp up in power until the power after the power ramp activates the reflector and receiver, the reflector transmits m to the receiver, the receiver transmits m to the exciter, and the exciter may determine a second power to activate the reflector based on m, thereby determining the forward communication power.

In a second aspect, an embodiment of the present application further provides a method for reflecting communication signal power, where the method includes: 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, the second signal is used for indicating that the receiver is activated, and the second signal comprises a second power, the second power is used for activating the reflector, and the second power is smaller than or equal to the first power; the exciter determines backward communication power according to the first power; and determining the forward communication power according to the second power.

In one possible design, the method may further include: if the exciter does not receive the second signal fed back by the receiver, the exciter may perform power ramp for at least one time on the first power, and send an update signal to the reflector after power ramp every time, where the update signal carries a third power obtained by latest power ramp until the feedback signal of the receiver is received, where the feedback signal carries a fourth power, the fourth power is a power used when the reflector is activated, and the fourth power is less than or equal to the third power carried in the last sent update signal; the exciter determines backward communication power according to third power carried in the updating signal sent last time; and determining the forward communication power according to the fourth power.

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

In a possible design, the second signal includes a second power, and specifically, the second signal carries first information, where the first information is used to indicate that the reflector is activated based on the second power.

In a possible design, the feedback signal carries a fourth power, which may specifically be 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.

In one possible design, the second information may include m, where m may indicate that the reflector is activated by a third power obtained after the driver climbs for an mth power, the fourth power is the third power obtained after the power climbs for the mth power, and m is a non-negative integer.

In this design, the reflector may transmit m to the receiver, which may transmit m to the exciter, which may determine the power to activate the reflector based on m, and thus determine the forward communication power.

In one possible design, the determining, by the exciter, a forward communication power based on the second power may include: if the first power is the initial power, the exciter may use the power obtained after the initial power is power-down-graded as the second power, and determine the forward communication power according to the second power.

In this design, if the initial power activates both the reflector and the receiver, the exciter may power down the initial power to determine the forward communication power. Normally, the forward communication power is less than or equal to the backward communication power, the exciter performs power downgrade 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.

In one possible design, the initial power is determined based on one or more of a power expected to be received by the receiver, a path loss of a forward communication link, or a path loss of a reverse communication link.

In a fourth aspect, embodiments of the present application also provide a reflected communication signal power apparatus having the functionality of an exciter, reflector or receiver implementing the above method, comprising means (means) for performing the steps or functions described in the above method aspects. The steps or functions may be implemented by software, or by hardware (e.g., a circuit), or by a combination of hardware and software. Wherein the exciter or the receiver is a network device or a terminal device.

In one possible design, the apparatus includes one or more processors and a communication unit. The one or more processors are configured to enable the apparatus to perform the respective functions of the exciter, reflector or receiver in the above-described method.

Optionally, the apparatus may also include one or more memories for coupling with the processor that hold the necessary program instructions and/or data for the apparatus. The one or more memories may be integral with the processor or separate from the processor. The present application is not limited.

In another possible design, the apparatus includes a transceiver, a processor, and a memory. The processor is configured to control the transceiver or the input/output circuit to transceive signals, the memory is configured to store a computer program, and the processor is configured to execute the computer program in the memory, so that the apparatus performs the method of the first aspect, the second aspect, the third aspect, any possible design of the first aspect, any possible design of the second aspect, or any possible design of the third aspect.

Optionally, the apparatus may further comprise one or more memories for coupling with the processor, which stores program instructions and/or data necessary for the actuator, reflector or receiver. The one or more memories may be integral with the processor or separate from the processor. The present application is not limited.

The device may be located in or be an actuator, reflector or receiver.

In another possible design, the apparatus includes a transceiver, a processor, and a memory. The processor is configured to control the transceiver or the input/output circuit to transceive signals, the memory is configured to store a computer program, and the processor is configured to execute the computer program in the memory, such that the apparatus performs the method of the first aspect, the second aspect, the third aspect, any possible design of the first aspect, any possible design of the second aspect, or any possible design of the third aspect.

In a fifth aspect, this embodiment of the present application further provides a computer-readable storage medium for storing a computer program, where the computer program includes instructions for performing the method in the first aspect, the second aspect, the third aspect, any possible design of the first aspect, any possible design of the second aspect, or any possible design of the third aspect.

In a sixth aspect, an embodiment of the present application further provides a computer program product, where the computer program product includes: computer program code for causing a computer to perform the method of the first, second, third aspect described above, or any possible implementation of the first, second, third aspect, when the computer program code runs on a computer.

In a seventh aspect, an embodiment of the present application further provides a chip system, where the chip system may implement, by a transceiver, a function in any one of possible designs of the methods in the foregoing aspects, the second aspect, the third aspect, any one of possible designs of the first aspect, any one of possible designs of the second aspect, or any one of possible designs of the third aspect, for example, receiving or sending, by the transceiver, data and/or information related to the methods in the foregoing aspects. In one possible design, the system-on-chip further includes a memory to hold program instructions and/or data. The chip system may be formed by a chip, or may include a chip and other discrete devices.

In an eighth aspect, an embodiment of the present application further provides a communication system, where the communication system includes an exciter, a reflector and a receiver, where the receiver is configured to implement the method in any one of the possible designs of the first aspect and the first aspect, the reflector is configured to implement the method in any one of the possible designs of the second aspect and the second aspect, and the exciter is configured to implement the method in any one of the possible designs of the third aspect and the third aspect.

For technical effects achieved by the fourth aspect to the eighth aspect, please refer to the technical effects achieved by the first aspect, the second aspect or the third aspect, which will not be repeated herein.

Drawings

The drawings that are required to be used in the description of the embodiments are briefly described below.

Fig. 1 is a schematic diagram of a communication architecture according to an embodiment of the present application;

fig. 2 is a schematic diagram of another communication architecture provided in the embodiment of the present application;

fig. 3 is a schematic structural diagram of an exciter according to an embodiment of the present disclosure;

fig. 4 is a schematic structural diagram of a reflector according to an embodiment of the present disclosure;

fig. 5 is a schematic structural diagram of another reflector provided in the embodiment of the present application;

fig. 6 is a schematic structural diagram of a receiver according to an embodiment of the present disclosure;

FIG. 7 is a schematic diagram of a reflected communication signal power process provided by an embodiment of the present application;

fig. 8 is a schematic diagram illustrating a process of reflecting communication signal power according to an embodiment of the present application;

fig. 9 is a block diagram of a reflected communication signal power device according to an embodiment of the present application;

fig. 10 is a structural diagram of a reflected communication signal power device according to an embodiment of the present application.

Detailed Description

The present invention will be described in further detail below with reference to the accompanying drawings.

This application is intended to present various aspects, embodiments or features around a system that may include a number of devices, components, modules, and the like. It is to be understood and appreciated that the various systems may include additional devices, components, modules, etc. and/or may not include all of the devices, components, modules etc. discussed in connection with the figures. Furthermore, a combination of these schemes may also be used.

In addition, in the embodiments of the present application, the word "exemplary" is used to mean serving as an example, instance, or illustration. Any embodiment or design described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments or designs. Rather, the term using examples is intended to present concepts in a concrete fashion.

The network architecture and the service scenario described in the embodiment of the present application are for more clearly illustrating the technical solution of the embodiment of the present application, and do not form a limitation on the technical solution provided in the embodiment of the present application, and as a person of ordinary skill in the art knows that along with the evolution of the network architecture and the appearance of a new service scenario, the technical solution provided in the embodiment of the present application is also applicable to similar technical problems.

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

1) The backscatter communication (backscatter communication) is a technology which needs a special radio frequency excitation source and extra frequency spectrum resources for communication, and is suitable for the field of passive communication with extremely low power consumption and low cost in the application of the internet of things. The reflective communication is also referred to as backscatter communication, passive communication, or diffuse communication, and in some cases (e.g., where the reflector is powered passively), the reflective communication may also be referred to as passive communication.

An exciter, reflector and receiver may be included in a reflective communication system. In one implementation, the exciter and the receiver may be located in two different nodes, as shown in fig. 1. In another implementation, the exciter and the receiver may be integrated into the same node, as shown in fig. 2, and a reader (reader) is integrated with the exciter and the receiver. The communication link between the exciter and the receiver is a pass-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 referred to as a backward communication link. The signals used by the forward communication link may be referred to as forward communication signals, and the forward communication link may also charge the reflector while communicating, i.e., the exciter may also carry data information for communication while energizing and charging the reflector. Illustratively, the signal may be an Amplitude Shift Keying (ASK) signal.

2) An exciter for transmitting a wireless signal (also called an energy signal or an excitation signal). The exciter may also be referred to as an exciter communicator, Helper, interrogator or reader. Wherein the exciter may be a network device or a terminal device.

As shown in fig. 3, for example, the exciter may include an exciter exciting signal unit, a power allocating unit, and a transmitting signal unit, where the exciter exciting signal unit may be configured to excite to generate a wireless signal, the power allocating unit may be configured to allocate power of the wireless signal, and the transmitting signal unit may be configured to transmit the wireless signal at the power allocated by the power allocating unit, that is, the power is included in the wireless signal, or the wireless signal carries the power.

3) The reflector is used for receiving the wireless signal sent by the exciter, acquiring power or signal energy in the wireless signal, and bearing the signal of the reflector on the reflected signal to realize signal reflection. The reflector is also called a reflective communication device, a reflective device (backscatter device), a scattered signal device (ambient signal device), a Radio Frequency identifier, a Radio Frequency Identification (RFID), or a Radio Frequency tag, and may also be called a passive device (passive device) when the power supply method of the reflector is passive, and may also be called a semi-active device (semi-active device) when the power supply method of the reflector is semi-active.

According to different working modes or capacities of the reflectors, power supply modes of the reflectors can be divided into a passive mode and a semi-active mode, wherein the power supply mode is that the passive mode means that the reflectors have no external power supply system, the power supply mode is that the semi-active mode means that the reflectors are connected with a power supply system (such as a battery), and part of processes in a communication process need the power supply system to supply power. The passive or semi-active power supply mode can realize low-power-consumption communication.

Fig. 4 is a schematic diagram of a possible structure of the reflector, and the data reflected by the reflector may be identification (for example, radio frequency identification RFID) or other data (for example, 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 communicated with the charging module; and when the signal is reflected, the microprocessor of the reflector is communicated with the reflection module. The microprocessor is used for processing the received data and processing the reflected data.

Fig. 5 is a schematic diagram of another possible structure of the reflector, where the reflector may include a reflector data receiving unit, a data detecting unit, and a data reflection signal unit, the reflector data receiving unit may be configured to receive a wireless signal, the data detecting unit may be configured to detect data in the wireless signal, and the data reflecting unit may be configured to bear the data and a signal of the reflector on a reflection signal and send the reflection signal.

4) And the receiver is used for receiving the reflected signal of the reflector and demodulating the data carried on the reflected signal. The receiver is also called a receiving communication device or receiving apparatus.

As shown in fig. 6, for example, the receiver may include a receiver signal receiving unit, a data detecting unit, and a data transmitting unit, where the receiver signal receiving unit may be configured to receive a reflected signal, the data detecting unit may be configured to demodulate data carried on the reflected signal, and the data transmitting unit may be configured to transmit the data to another device or feed response information of the data back to the exciter. Wherein the exciter may be a network device or a terminal device.

5) Path loss (pathloss), also called path loss, refers to the signal power loss between the sender and the receiver, which is introduced by the transmission distance and the transmission environment. It is a quantity strongly related to the transmission distance, transmission environment and carrier frequency. It is understood that the transmitting party and the receiving party are not fixed in different communication scenarios, for example, in fig. 1, in a direct communication, the transmitting party may be a receiver, and the receiving party may be an exciter, in a forward communication, the transmitting party may be an exciter, and the receiving party may be a reflector, and in a backward communication, the transmitting party may be a reflector, and the receiving party may be a receiver.

6) Network equipment refers to equipment in an access network which communicates with wireless terminal equipment through one or more cells in an air interface. The network device may be a node in a radio access network, which may also be referred to as a base station, and may also be referred to as a Radio Access Network (RAN) node (or device). Currently, some examples of network devices are: a gbb, a Transmission Reception Point (TRP), an evolved Node B (eNB), a Radio Network Controller (RNC), a Node B (NB), a Base Station Controller (BSC), a Base Transceiver Station (BTS), a home base station (e.g., home evolved Node B, or home Node B, HNB), a Base Band Unit (BBU), or a wireless fidelity (Wifi) Access Point (AP), etc. In addition, in a network structure, the network device may include a Centralized Unit (CU) node and a Distributed Unit (DU) node. The CU implements part of the function of the gNB and the DU implements part of the function of the gNB. For example, a CU is responsible for handling non-real-time protocols and services, and implementing functions of a Radio Resource Control (RRC) layer and a Packet Data Convergence Protocol (PDCP) layer. The DU is responsible for processing a physical layer protocol and a real-time service, and implements functions of a Radio Link Control (RLC) layer, a Medium Access Control (MAC) layer, and a Physical (PHY) layer.

In the embodiment of the present application, the apparatus for implementing the function of the network device may be a network device, or may be an apparatus capable of supporting the network device to implement the function, for example, a system on chip, and the apparatus may be installed in the network device.

7) Terminal equipment, including devices that provide voice and/or data connectivity to a user, may include, for example, handheld devices with wireless connection capability or processing devices connected to wireless modems. The terminal device may communicate with a core network via a Radio Access Network (RAN), exchanging voice and/or data with the RAN. The terminal device may include a User Equipment (UE), a wireless terminal device, a mobile terminal device, a device-to-device communication (D2D) terminal device, a V2X terminal device, a machine-to-machine/machine-type communication (M2M/MTC) terminal device, an internet of things (IoT) terminal device, a subscriber unit (subscriber unit), a subscriber station (subscriber state), a mobile station (mobile state), a remote station (remote state), an access point (access point, AP), a remote terminal (remote terminal), an access terminal (access terminal), a user terminal (user terminal), a user agent (user agent), or a user equipment (user device), etc. For example, mobile telephones (or so-called "cellular" telephones), computers with mobile terminal equipment, portable, pocket, hand-held, computer-included mobile devices, and the like may be included. For example, Personal Communication Service (PCS) phones, cordless phones, Session Initiation Protocol (SIP) phones, Wireless Local Loop (WLL) stations, Personal Digital Assistants (PDAs), and the like. Also included are constrained devices, such as devices that consume less power, or devices that have limited storage capabilities, or devices that have limited computing capabilities, etc. Examples of information sensing devices include bar codes, Radio Frequency Identification (RFID), sensors, Global Positioning Systems (GPS), laser scanners, and the like.

By way of example and not limitation, in the embodiments of the present application, the terminal device may also be a wearable device. Wearable equipment can also be called wearable smart device or intelligent wearable equipment etc. is the general term of using wearable technique to carry out intelligent design, develop the equipment that can dress to daily wearing, like glasses, gloves, wrist-watch, dress and shoes etc.. A wearable device is a portable device that is worn directly on the body or integrated into the clothing or accessories of the user. The wearable device is not only a hardware device, but also realizes powerful functions through software support, data interaction and cloud interaction. The generalized wearable smart device includes full functionality, large size, and can implement full or partial functionality without relying on a smart phone, such as: smart watches or smart glasses and the like, and only focus on a certain type of application functions, and need to be used in cooperation with other devices such as smart phones, such as various smart bracelets, smart helmets, smart jewelry and the like for monitoring physical signs.

The various terminal devices described above, if located on a vehicle (e.g., placed in or installed in the vehicle), may be considered to be vehicle-mounted terminal devices, which are also referred to as on-board units (OBUs), for example.

In this embodiment, the terminal device may further include a relay (relay). Or, it is understood that any device capable of data communication with a base station may be considered a terminal device.

In the embodiment of the present application, the apparatus for implementing the function of the terminal device may be the terminal device, or may be an apparatus capable of supporting the terminal device to implement the function, for example, a chip system, and the apparatus may be installed in the terminal device. In the embodiment of the present application, the chip system may be composed of a chip, and may also include a chip and other discrete devices.

"and/or" in the present application, describing an association relationship of associated objects, means that there may be three relationships, for example, a and/or B, may mean: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship.

Reference to at least one in this application is a reference to one or more times and a reference to a plurality of times is a reference to two or more times.

In addition, it is to be understood that the terms first, second, etc. in the description of the present application are used for distinguishing between the descriptions and not necessarily for describing a sequential or chronological order.

The technical solution of the embodiment of the present application may be applied to a reflective communication system, and the reflective communication system may be applied to a conventional mobile communication system, that is, the reflective communication system may be used in combination with the conventional mobile communication system, for example: the mobile communication system may be a fourth Generation (4G) communication system (e.g., Long Term Evolution (LTE) system), a Worldwide Interoperability for Microwave Access (WiMAX) communication system, a fifth Generation (5G) communication system (e.g., New Radio (NR) system), a future mobile communication system, and so on.

In order to facilitate understanding of the embodiments of the present application, an application scenario of the embodiments of the present application is described.

Generally, during reflective communication, an actuator may send a signal to a reflector, a reflector may send a signal to a receiver, and a receiver may send a signal to an actuator, but a reflector may not send a signal to an actuator. And the power employed by the forward communication link (also referred to as forward communication power) and the power employed by the reverse communication link (also referred to as reverse communication power) may differ. When the exciter and the receiver are located in different two different devices, the forward communication and the backward communication are implemented by using different devices, and the different devices are located at different positions. The exciter needs to know whether forward communication is successful or not according to whether a signal transmitted by the receiver is received or not, that is, the exciter determines whether a forward communication link is established or not when determining that backward communication is successful. Therefore, the exciter determines the backward communication power and then determines the forward communication power based on the backward communication power, which results in inefficient determination of the forward communication power.

In the power distribution method provided in the prior art, power distribution is performed based on a two-point structure of a network device and a terminal, but a reflective communication system is a three-point structure of an exciter, a reflector and a receiver, and thus the power distribution method in the prior art is not suitable for use in reflective communication. The problem of inefficiency in determining the forward communication power still exists.

In view of this, in order to improve the efficiency of determining the forward communication power, the present application provides a method for determining the power of the reflected communication signal, which can determine the forward communication power in the process of determining the backward communication power, so that the forward power does not need to be determined additionally after the backward communication power is determined, thereby reducing the steps and time for determining the forward communication power.

In the method, a receiver receives a first signal of 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, after the receiver receives the first signal, the receiver sends a second signal to an exciter, the second signal is used for indicating that the receiver is activated, and the second signal includes the second power. Thus, the exciter may determine that a forward communication link and a reverse communication link have been established based on the second signal, determine a reverse communication power based on the first power, and determine a forward communication power based on the second power. Therefore, the method can simultaneously determine the backward communication power and the forward communication power, and the determination process of the forward communication power is independent of the backward communication power, thereby reducing the steps and time for determining the forward communication power and improving the efficiency for determining the forward communication power.

The embodiment of the present application provides a method for determining reflected communication signal power, which can be applied to the reflected communication systems shown in fig. 1 and fig. 2. The specific procedure of the reflected communication signal power determination method is described in detail below with reference to fig. 7.

As shown in fig. 7, the process includes:

s701: the exciter sends a third signal to the reflector, which receives the third signal, which includes the first power.

The first power is used for communication between the exciter to the reflector and 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 may also be expressed as the power currently used by the exciter to transmit the excitation signal.

The third signal may be understood as an excitation signal, and the exciter may attempt to excite the reflector and the receiver by the third signal carrying the first power, and establish a forward communication link and a backward communication link, thereby realizing forward communication and backward communication. It is understood that before this S701, the reflector may be in an activated state or may be in an inactivated state.

In one possible implementation, the first power is an initial power, and the initial power may be determined according to one or more of power P0 expected to be received by the receiver, a path loss of a direct communication link, a path loss PL2 of a forward communication link, or a path loss PL1 of a backward communication link. One or more of power P0 expected to be received by the receiver, path loss PL1 of a backward communication link, path loss PL2 of a forward communication link, and path loss of a through communication link may be configured in the exciter, wherein the power P0 expected to be received by the receiver may be related to a random access preamble or subcarrier spacing. Alternatively, the path loss of the direct communication link and the path loss of the backward communication link may be converted to each other, for example, the exciter may directly determine the path loss of the direct communication link as the path loss of the backward communication link, or the exciter may directly determine the path loss of the backward communication link as the path loss of the direct communication link. The network device may indicate the size of PL2 or indicate the size of PL 1.

For example, the exciter may determine the power P0 expected to be received by the receiver as the initial power. For another example, the exciter may comprehensively consider the expected received power and path loss of the receiver, and according to P0, PL1, and PL2, may determine the initial power PP as min { Pmax, P0+ PL1+ PL2+ Delta1}, i.e., take the minimum value of Pmax and P0+ PL1+ PL2+ Delta1 as the initial power PP. As another example, when setting the expected received power of the receiver, taking into account the path loss of the forward communication link, that is, where P0 is equal to the expected received power of the receiver + PL2, the exciter may determine the initial power PP as min { Pmax, P0+ PL1+ Delta1} according to P0 and PL1, that is, the minimum value is the initial power PP in Pmax and P0+ PL1+ Delta 1. Where Delta1 is an optional parameter and represents one or more power factors, and Pmax represents the maximum power transmitted by the terminal device.

In another possible implementation, the first power may also be a power obtained after the exciter performs at least one power ramp. Generally, when the exciter sends the third signal with the initial power, the exciter may not receive the second signal fed back by the receiver, so the exciter may perform power ramp on the initial power at least once, send an update signal to the reflector after each power matching, where the update signal carries a third power obtained by the latest power ramp until receiving the feedback signal of the receiver, where the feedback signal carries a fourth power, the fourth power is an activation power used when the reflector is activated, and the fourth power is less than or equal to the third power carried in the last sent update signal. The update signal may be understood as an updated third signal, and the third power obtained by matching the latest power carried in the update signal may be understood as an updated first power carried in the updated third signal. The feedback signal may be understood as a second signal transmitted by the receiver for the updated third signal. The power ramp represents that the power is increased, and each time the excitation signal is transmitted, the power of the transmitted signal is greater than the power of the excitation signal transmitted last time by a certain value, and the value can be fixed or not.

When the exciter performs power ramp-up, power ramp-up may be performed on the initial power or on the power obtained by the current latest power ramp-up. For example, the power ramp may satisfy the following equation: p1 ═ PP + (N-a) × DeltaP + delta2, where P1 is the power obtained after power ramp-up, PP is the initial power, N denotes the current nth power ramp-up, N is a non-negative integer, a, DeltaP, and delta2 are preset values, DeltaP is a power ramp-up factor, delta2 is another power factor other than the power ramp-up 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 climbs the power of the initial power, N is 0; if the exciter performs power climbing on the power obtained by the current latest power climbing, and N is equal to the number of times of current power climbing-1, for example, the exciter performs power climbing on the power obtained by the 2 nd power climbing, that is, the exciter performs the current third power climbing, and N is equal to 3-1 and equal to 2. a can be any number, and is exemplary, and a is any integer, e.g., a is 1.

The two possible implementations can be used in combination, and the specific process can be shown in fig. 8 described below, and the detailed description of the process shown in fig. 8 will be described below.

The first power implicitly includes a power for exciting the reflector, so that the reflector can be activated according to the first power carried in the third signal after receiving the third signal, and if the reflector is activated, the reflector can determine that the first power is an activation power used when the reflector is activated. For the sake of convenience of distinction, the activation power used when the reflector is activated is described as the second power in the embodiment of the present application. Specifically, the second power is an activation power used when the reflector is activated based on the first power. The first and/or second power may be an index value, which may represent the excitation signal transmitted the nth time, or a specific value, which represents the power at which the third signal is transmitted.

S702: the reflector sends a first signal to the receiver, the receiver receives the first signal, the first signal includes/carries the first power and a second power, the second power is an activation power used when the reflector is activated, and the second power is smaller than or equal to the first power.

If the reflector is activated, the reflector transmits a first signal to the receiver, the first signal including the first power and the second power. Illustratively, the reflector modulates the second power onto the first signal. The reflector does not send the first signal to the receiver if the first power does not activate the reflector.

The first signal may be understood as a reflected signal of a third signal, i.e. the reflector reflects the third signal to obtain the first signal. The first signal includes a first power and a second power. Wherein the second power may be an initial power, or the second power may be a power obtained by power ramping the exciter. Typically, the second power for forward communication is less than or equal to the first power for backward communication.

Optionally, 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 (i.e., a fourth power) obtained after the exciter performs at least one power ramp. Illustratively, the first information or the second information includes m, m is a power index value of forward communication, m is used to indicate that the reflector is activated by a second power obtained after the exciter climbs for the mth power, m is a non-negative integer, and if the reflector is activated by an initial power, m is 0.

S703: the receiver sends a second signal to the exciter, the exciter receives the second signal, the second signal is used for indicating that the receiver is activated, and the second signal comprises the second power.

If the first power successfully activates the receiver, the receiver sends a second signal to the exciter informing the exciter that the receiver has been activated or that the receiver receives a signal reflected from the reflector, and a forward communication link and a backward communication link have been established, which enables the exciter to determine the backward communication power based on the first power. The second signal further includes a second power, which enables the exciter to determine the forward communication power based on the second power to enable determination of the forward communication power in determining the backward communication power.

The receiver does not send the second signal to the exciter if the first power does not activate the receiver. Therefore, the exciter may determine that the reflector and the receiver are activated if the exciter receives the second signal transmitted from the receiver.

Optionally, the second signal may further include the first power.

Illustratively, the second signal includes the second power, which may be implemented by the second signal carrying first information indicating that the reflector is activated based on the second power; or by the second signal carrying second information indicating that a second power (i.e., a fourth power) obtained after the reflector performs at least one power ramp on the first power based on the exciter is activated. Illustratively, the first information or the second information includes m, m is a power index value of forward communication, m is used to indicate that the reflector is activated by a second power obtained after the exciter climbs for the mth power, m is a non-negative integer, and if the reflector is activated by an initial power, m is 0.

S704: the exciter determines backward communication power according to the first power; and determining the forward communication power according to the second power.

In one possible implementation, the exciter may directly determine the first power as a backward communication power and directly determine the second power as a forward communication power.

In another possible implementation, the exciter may perform power ramp-up or power ramp-down on the first power, determining a backward communication power; and carrying out power climbing or power descending on the second power to determine the forward communication power. For example, if the first power is an initial power, the exciter may power down-ramp the initial power to determine a forward communication power.

For example, the process of power downslope may satisfy the following equation: p2 ═ PP- (M-b) × DeltaQ + delta3, where P2 is the power obtained after power down-slope is performed on the PP, PP is the initial power, M denotes that the power down-slope is currently performed for the mth time, M is a non-negative integer, b, DeltaQ and delta3 are preset values, DeltaQ is a power down-slope factor, delta3 is another power factor other than the power down-slope factor, delta3 is an optional parameter, for example, delta3 is a power factor related to the rate of the random access preamble. b can be any number, and is exemplary, any integer, e.g., b is 1.

In addition, as shown in S701, if the exciter does not receive the second signal fed back by the receiver, the exciter performs power ramp for n times on the first power, and sends an update signal to the reflector after power ramp every time, where the update signal carries a third power obtained by the latest power ramp until the feedback signal of the receiver is received, the feedback signal carries a fourth power, the fourth power is an activation power used when the reflector is activated, the fourth power is less than or equal to the third power carried in the last sent update signal, n is a positive integer, and m is less than or equal to n. The exciter can determine backward communication power according to the third power carried in the updating signal sent last time; and determining the forward communication power according to the fourth power. Optionally, the feedback signal carries a fourth power, including: the feedback signal carries second information indicating that the reflector is activated based on the fourth power.

After the exciter determines the forward communication power and the backward communication power, in a subsequent communication process, the exciter can communicate with the reflector according to the forward communication power, so that the energy consumption of the exciter can be reduced, and the signal interference of an excitation signal to other equipment can also be reduced.

Taking fig. 8 as an example, the following describes the reflected communication signal power determination process in detail, including the following steps:

s801: the exciter determines the initial power as a first power.

S802: the exciter transmits a third signal to the reflector, the third signal including the first power. The first power is used to excite the reflector and the receiver.

S803: after receiving the third signal, the reflector judges whether the first power activates the reflector; if so, go to S804; if not, proceed to S805.

S804: the reflector carries out activation processing according to the first power, the power used when the reflector is activated is determined to be second power, and the transmitter sends a first signal which comprises the first power and the second power; wherein the second power is less than the first power; then, S806 is performed.

S805: the reflector does not transmit the first signal; proceed to S810.

S806: after the receiver receives a first signal, judging that the first power activates the receiver; if so, go to S807; if not, proceed to S808.

S807: the receiver transmitting a second signal, the second signal comprising the second power; s809 is performed. The second signal is used to indicate that the receiver is activated.

S808: the receiver does not transmit the second signal; proceed to S810.

S809: the exciter determines backward communication power according to the first power; and determining the forward communication power according to the second power.

S810: the exciter performs power ramp on the first power, and the first power is updated by the power after the power ramp; returning to S802.

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 a power index value m of forward communication carried in the second signal is 0, the exciter may determine the initial power as backward communication power, and the exciter may perform power down-slope on the initial power to determine forward communication power.

For another example, if the exciter sends a third signal carrying the initial power, the exciter does not receive a second signal fed back by the receiver; the power obtained when the exciter climbs for 1 st to 4th times is not used for activating the reflector, and the exciter does not receive a second signal fed back by the reflector; the exciter climbs for the 5th time to obtain power P1, and if the P1 activates the reflector but does not activate the receiver, the exciter does not receive a second signal fed back by the reflector; when the exciter performs power climbing for 6 th to 10 th times, after each power climbing, the power obtained by each power climbing is carried in a third signal, after the reflector receives the third signal each time, the power index value 5 of forward communication is modulated on a first signal, the first signal is sent to the reflector, if the receiver is activated by the power P2 obtained by the power climbing for 10 th time, 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 power climbing for 10 th time. The exciter determines power P1 at power ramp 5 according to the power index value 5 of the forward communication, determines forward communication power according to the power P1, and determines backward communication power according to the power P2.

The method for determining the power of the reflected communication signal according to the embodiment of the present application is described in detail with reference to fig. 1 to 8, and based on the same technical concept as that of the method for determining the power of the reflected communication signal, the embodiment of the present application further provides a device for determining the power of the reflected communication signal, as shown in fig. 9, the device 900 includes a processing unit 901 and a transceiver unit 902, and the device 900 can be used in the method described in the embodiment of the method applied to the transceiver, the reflector or the exciter.

In one embodiment, apparatus 900 may be applied to a transceiver. Specifically, the processing unit 901 is configured to receive, by the transceiver unit 902, a first signal reflected by a reflector, where the first signal includes a first power and a second power, the first power is used for communication between the receiver and the reflector, the second power is used when the reflector is activated, and the second power is smaller than or equal to the first power; and transmitting a second signal to the exciter through the transceiving unit 902, the second signal comprising the second power, the second signal indicating that the receiver is activated.

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

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

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

In one implementation, the second information may be m, where m represents that the reflector is activated by the second power obtained after the m power ramps of the exciter, and m is a non-negative integer.

In another embodiment, the apparatus 900 may also be applied to a reflector. Specifically, the processing unit 901 is configured to receive, through the transceiver unit 902, a third signal sent by the exciter, where the third signal includes a first power, and the first power is used for communication between the exciter and the reflector and between the exciter and the receiver; and sending a first signal to the receiver through the transceiver unit 902, where the first signal includes the first power and a second power, the second power is a power used when the reflector is activated, and the second power is smaller than or equal to the first power.

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

For example, the second information may be m, where m represents that the reflector is activated by the second power obtained after the m power ramps of the exciter, and m is a non-negative integer.

In yet another embodiment, the apparatus 900 may also be applied to an actuator. Specifically, the transceiver unit 902 is configured to transmit a third signal to the reflector, where the third signal includes a first power, and the first power is used for communication between the exciter and the receiver; and receiving a second signal fed back by the receiver, wherein the second signal is used for indicating that the receiver is activated, and the second signal comprises a second power, the second power is used for activating the reflector, and the second power is smaller than or equal to the first power; a processing unit 901, configured to determine a backward communication power according to the first power; and determining the forward communication power according to the second power.

In an implementation manner, the processing unit 901 may further perform at least one power ramp on the first power when the transceiving unit 902 does not receive a second signal fed back by the receiver, and send an update signal to the reflector through the transceiving unit 902 after each power ramp, where the update signal carries a third power obtained by a latest power ramp until a feedback signal of the receiver is received through the transceiving unit 902, where the feedback signal carries a fourth power, the fourth power is a power used when the reflector is activated, and the fourth power is less than or equal to the third power carried in an update signal sent last time; determining backward communication power according to the third power carried in the updating signal sent last time; and determining the forward communication power according to the fourth power.

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

In an implementation manner, the feedback signal carries a fourth power, and may carry second information for the feedback signal, where the second information is used to indicate that the reflector is activated based on the fourth power.

In one implementation, the second information may be m, where m represents that the reflector is activated by the third power obtained after the mth power ramp of the exciter, the fourth power is the third power obtained after the mth power ramp, and m is a non-negative integer.

In an implementation manner, if the first power is an initial power, when the processing unit 901 determines a forward communication power according to the second power, specifically, a power down slope may be performed on the initial power, and a power obtained after the power down slope is used as the second power, and then the second power is used to determine the forward communication power.

For example, the initial power may be determined according to one or more of the power expected to be received by the receiver, the path loss of the forward communication link, or the path loss of the backward communication link, which is not limited herein.

It should be noted that, the division of the modules in the embodiments of the present application is schematic, and is only a logical function division, and in actual implementation, there may be another division manner, and in addition, each functional unit in each embodiment of the present application may be integrated in one processing unit, or may exist alone physically, or two or more units are integrated in one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit. Such as fig. 3, 5 and 6 described above.

The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application may be substantially implemented or contributed by the prior art, or all or part of the technical solution may be embodied in a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, a network device, or the like) or a processor (processor) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.

Based on the same technical concept as the above-mentioned reflected communication signal power determination method, as shown in fig. 10, the embodiment of the present application further provides a schematic structural diagram of a reflected communication signal power determination apparatus 1000. The device 1000 may be used to implement the methods described in the above method embodiments applied to a receiver, reflector or exciter, as may be seen from the description in the above method examples.

The apparatus 1000 includes one or more processors 1001. The processor 1001 may be a general-purpose processor or a special-purpose processor, etc. For example, a baseband processor, or a central processor. The baseband processor may be used to process communication protocols and communication data, and the central processor may be used to control a communication device (e.g., a base station, a terminal, or a chip), execute a software program, and process data of the software program. The communication device may include a transceiving unit to enable input (reception) and output (transmission) of signals. For example, the transceiver unit may be a transceiver, a radio frequency chip, or the like.

The apparatus 1000 includes one or more of the processors 1001, and the one or more processors 1001 may implement the methods of the receiver, reflector, or actuator described above in the illustrated embodiments.

Alternatively, the processor 1001 may also implement other functions than the method of the above-described illustrated embodiment.

Alternatively, in one design, the processor 1001 may execute instructions to enable the apparatus 1000 to perform the method described in the above method embodiment. The instructions may be stored in whole or in part in the processor, such as instructions 1003, or in whole or in part in a memory 1002 coupled to the processor, such as instructions 1004, or may collectively cause apparatus 1000 to perform the methods described in the above method embodiments, through

instructions

1003 and 1004.

In yet another possible design, the communication device 1000 may also include circuitry that may implement the functionality of the receiver, reflector, or exciter of the foregoing method embodiments.

In yet another possible design, the apparatus 1000 may include one or more memories 1002 having instructions 1004 stored thereon, which are executable on the processor, so that the apparatus 1000 performs the methods described in the above method embodiments. Optionally, the memory may further store data therein. Instructions and/or data may also be stored in the optional processor. For example, the one or more memories 1002 may store the corresponding relationships described in the above embodiments, or related parameters or tables and the like involved in the above embodiments. The processor and the memory may be provided separately or may be integrated together.

In yet another possible design, the apparatus 1000 may also include a transceiver 1005 and an antenna 1006. The processor 1001 may be referred to as a processing unit and controls a device (terminal or base station). The transceiver 1005 may be referred to as a transceiver, a transceiving circuit, a transceiving unit, or the like, and is used for performing transceiving function of the apparatus through the antenna 1006.

It should be noted that the processor in the embodiments of the present application may be an integrated circuit chip having signal processing capability. In implementation, the steps of the above method embodiments may be performed by integrated logic circuits of hardware in a processor or instructions in the form of software. The Processor may be a general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic device, or discrete hardware components. The various methods, steps, and logic blocks disclosed in the embodiments of the present application may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in connection with the embodiments of the present application may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor. The software module may be located in ram, flash memory, rom, prom, or eprom, registers, etc. storage media as is well known in the art. The storage medium is located in a memory, and a processor reads information in the memory and completes the steps of the method in combination with hardware of the processor.

It will be appreciated that the memory in the embodiments of the subject application can be either volatile memory or nonvolatile memory, or can include both volatile and nonvolatile memory. The non-volatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable PROM (EEPROM), or a flash Memory. Volatile Memory can be Random Access Memory (RAM), which acts as external cache Memory. By way of example, but not limitation, many forms of RAM are available, such as Static random access memory (Static RAM, SRAM), Dynamic Random Access Memory (DRAM), Synchronous Dynamic random access memory (Synchronous DRAM, SDRAM), Double Data Rate Synchronous Dynamic random access memory (DDR SDRAM), Enhanced Synchronous SDRAM (ESDRAM), Synchronous link SDRAM (SLDRAM), and Direct Rambus RAM (DR RAM). It should be noted that the memory of the systems and methods described herein is intended to comprise, without being limited to, these and any other suitable types of memory.

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

Embodiments of the present application further provide a computer program product, which when executed by a computer, implements the method for determining the power of a reflected communication signal according to any of the method embodiments described above as applied to a receiver, a reflector or an actuator.

In the above embodiments, the implementation may be wholly or partially realized by software, hardware, firmware, or any combination thereof. When implemented in software, may 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 loaded and executed on a computer, cause the processes or functions described in accordance with the embodiments of the application to occur, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored on a computer readable storage medium or transmitted from one computer readable storage medium to another, for example, from one website, computer, server, or data center to another website, computer, server, or data center via wire (e.g., coaxial cable, fiber optic, Digital Subscriber Line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device, such as a server, a data center, etc., that incorporates one or more of the available media. The usable medium may be a magnetic medium (e.g., floppy Disk, hard Disk, magnetic tape), an optical medium (e.g., Digital Video Disk (DVD)), or a semiconductor medium (e.g., Solid State Disk (SSD)), among others.

The embodiment of the application also provides a device for determining the power of the reflected communication signal, which comprises a processor and an interface; the processor is configured to perform the method for determining a power of a reflected communication signal as described above in any of the method embodiments applied to a receiver, a reflector or an actuator.

It should be understood that the above-mentioned reflected communication signal power determination device may be a chip, the processor may be implemented by hardware or may be implemented by software, and when implemented by hardware, the processor may be a logic circuit, an integrated circuit, or the like; when implemented in software, the processor may be a general-purpose processor implemented by reading software code stored in a memory, which may be integrated in the processor, located external to the processor, or stand-alone.

Embodiments of the present application further provide a communication system, which includes an exciter, a reflector and a receiver of the above functions, and is configured to perform the method for determining the power of a reflected communication signal according to any one of the method embodiments applied to the receiver, the reflector or the exciter. The system may be as shown in fig. 1 or fig. 2, for which reference is made to the foregoing description, and the detailed description is not repeated here.

Those of ordinary skill in the art will appreciate that the elements and algorithm steps of the examples described in connection with the embodiments disclosed herein may be embodied in electronic hardware, computer software, or combinations of both, and that the components and steps of the examples have been described in a functional general in the foregoing description for the purpose of illustrating clearly the interchangeability of hardware and software. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.

In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, a division of a unit is merely a logical division, and an actual implementation may have another division, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may also be an electric, mechanical or other form of connection.

Units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiments of the present application.

In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.

Through the above description of the embodiments, those skilled in the art will clearly understand that the present application can be implemented in hardware, firmware, or a combination thereof. When implemented in software, the functions described above may be stored on or transmitted over as one or more instructions or code on a computer-readable medium. Computer-readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another. A storage media may be any available media that can be accessed by a computer. Taking this as an example but not limiting: computer-readable media can include RAM, ROM, EEPROM, CD-ROM or other optical disk storage, magnetic disk storage or other magnetic storage devices, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer. Furthermore, the method is simple. Any connection is properly termed a computer-readable medium. For example, if software is transmitted from a website, a server, or other remote source using a coaxial cable, a fiber optic cable, a twisted pair, a Digital Subscriber Line (DSL), or a wireless technology such as infrared, radio, and microwave, the coaxial cable, the fiber optic cable, the twisted pair, the DSL, or the wireless technology such as infrared, radio, and microwave are included in the fixation of the medium. Disk and disc, as used herein, includes Compact Disc (CD), laser disc, optical disc, Digital Versatile Disc (DVD), floppy Disk and blu-ray disc where disks usually reproduce data magnetically, while discs reproduce data optically with lasers. Combinations of the above should also be included within the scope of computer-readable media.

In short, the above description is only a preferred embodiment of the present disclosure, and is not intended to limit the scope of the present disclosure. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A method for determining reflected communication signal power, comprising:

a receiver receives a first signal reflected by 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 used when the reflector is activated, the second power being less than or equal to the first power;

and after receiving the first signal, the receiver sends a second signal to an exciter, wherein the second signal comprises the second power, and the second signal is used for indicating that the receiver is activated.

2. The method of claim 1, wherein the second signal further comprises the first power.

3. The method of claim 1 or 2, wherein the first signal comprises the second power, comprising:

the first signal carries first information indicating that the reflector is activated based on the second power; or

The first signal carries second information indicating that the reflector is activated based on a second power obtained after the exciter performs at least one power ramp.

4. The method of any of claims 1-3, wherein the second signal includes the second power, comprising:

the second signal carries first information indicating that the reflector is activated based on the second power; or

The second signal carries second information indicating that the reflector is activated based on a second power obtained after the exciter performs at least one power ramp.

5. A method according to claim 3 or 4, wherein the second information comprises m, m indicating that the reflector is activated by the second power obtained after the m power ramp of the exciter, m being a non-negative integer.

6. A method for determining reflected communication signal power, comprising:

a reflector receives a third signal transmitted by an exciter, wherein the third signal comprises a first power, and the first power is used for communication between the exciter to the reflector and a receiver;

the reflector sends a first signal to the receiver, wherein the first signal comprises the first power and a second power, the second power is used when the reflector is activated, and the second power is smaller than or equal to the first power.

7. The method of claim 6, wherein the first signal comprises a second power, comprising:

8. The method of claim 7, wherein the second information comprises m, m indicating that the reflector is activated by a second power obtained after the m power ramp of the exciter, and m is a non-negative integer.

9. A method for determining reflected communication signal power, comprising:

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, the second signal is used for indicating that the receiver is activated, and the second signal comprises a second power, the second power is used for activating the reflector, and the second power is smaller than or equal to the first power;

the exciter determines backward communication power according to the first power; and determining the forward communication power according to the second power.

10. The method of claim 9, further comprising:

if the exciter does not receive a second signal fed back by the receiver, the exciter performs power ramp for at least one time on the first power, and sends an updating signal to the reflector after power ramp every time, wherein the updating signal carries a third power obtained by latest power ramp until the feedback signal of the receiver is received, the feedback signal carries a fourth power, the fourth power is a power used when the reflector is activated, and the fourth power is less than or equal to the third power carried in the updating signal sent last time;

the exciter determines backward communication power according to third power carried in the updating signal sent last time; and determining the forward communication power according to the fourth power.

11. The method of claim 9, wherein the second signal comprises a second power, comprising:

the second signal carries first information indicating that the reflector is activated based on the second power.

12. The method of claim 10, wherein the feedback signal carries a fourth power, comprising:

the feedback signal carries second information indicating that the reflector is activated based on the fourth power.

13. The method of claim 12, wherein the second information includes m indicating that a third power obtained after an mth power ramp of the exciter activated the reflector, the fourth power is the third power obtained after the mth power ramp, and m is a non-negative integer.

14. The method of any of claims 9-13, wherein the exciter determines a forward communication power based on the second power, comprising:

and if the first power is the initial power, the power obtained after the exciter performs power downhill on the initial power is used as the second power, and the forward communication power is determined according to the second power.

15. A reflected communication signal power determination device is characterized by comprising a processing unit and a transmitting-receiving unit;

the processing unit is configured to receive, by the transceiver unit, a first signal reflected by a reflector, where the first signal includes a first power and a second power, the first power is used for communication between the receiver and the reflector, the second power is used for activating the reflector, and the second power is smaller than or equal to the first power; and

transmitting, by the transceiver unit, a second signal to an exciter, the second signal including the second power, the second signal indicating that the receiver is activated.

16. The apparatus of claim 15, wherein the second signal further comprises the first power.

17. The apparatus of claim 15 or 16, wherein the first signal comprises the second power, comprising:

18. The apparatus of any of claims 15-17, wherein the second signal comprises the second power, comprising:

19. The apparatus of claim 18, wherein the second information comprises m indicating that the reflector is activated by a second power obtained after the m power ramps of the exciter, and m is a non-negative integer.

20. A reflected communication signal power determination device is characterized by comprising a processing unit and a transmitting-receiving unit;

the processing unit is used for receiving a third signal sent by the exciter through the transceiving unit, wherein the third signal comprises first power, and the first power is used for communication between the exciter and the reflector as well as between the exciter and the receiver; and

and sending a first signal to the receiver through the transceiver unit, wherein the first signal comprises the first power and a second power, the second power is used when the reflector is activated, and the second power is less than or equal to the first power.

21. The apparatus of claim 20, the first signal comprising a second power, comprising:

22. The apparatus of claim 21, wherein the second information comprises m indicating that the reflector is activated by a second power obtained after the m power ramps of the exciter, and m is a non-negative integer.

23. A reflected communication signal power determination device is characterized by comprising a processing unit and a transmitting-receiving unit;

the transceiver unit is used for transmitting a third signal to the reflector, wherein the third signal comprises a first power, and the first power is used for communication between the exciter and the reflector and between the exciter and the receiver; and receiving a second signal fed back by the receiver, wherein the second signal is used for indicating that the receiver is activated, and the second signal comprises a second power, the second power is used for activating the reflector, and the second power is smaller than or equal to the first power;

the processing unit is used for determining backward communication power according to the first power; and determining the forward communication power according to the second power.

24. The apparatus as recited in claim 23, said processing unit to further:

when the transceiver unit does not receive a second signal fed back by the receiver, performing power ramp-up on the first power at least once, and sending an update signal to the reflector through the transceiver unit after power ramp-up each time, where the update signal carries a third power obtained by latest power ramp-up until a feedback signal of the receiver is received through the transceiver unit, where the feedback signal carries a fourth power, the fourth power is a power used when the reflector is activated, and the fourth power is less than or equal to the third power carried in an update signal sent last time; and

determining backward communication power according to a third power carried in the updating signal sent last time; and determining the forward communication power according to the fourth power.

25. The apparatus of claim 23, wherein the second signal comprises a second power comprising:

26. The apparatus of claim 24, wherein the feedback signal carries a fourth power, comprising:

27. The apparatus of claim 26, wherein the second information comprises m indicating that a third power obtained after an mth power ramp of the exciter activated the reflector, the fourth power obtained after the mth power ramp, and m being a non-negative integer.

28. The apparatus according to any of claims 23-27, wherein the processing unit, when determining the forward communication power based on the second power, is specifically configured to:

and if the first power is the initial power, taking the power obtained after the initial power is subjected to power downhill as the second power, and determining the forward communication power according to the second power.

29. A computer-readable storage medium comprising a program or instructions for performing the method of any of claims 1-5, the method of any of claims 6-8, or the method of any of claims 9-14 when the program or instructions are run on a computer.

30. A communication system, characterized in that the communication system comprises a reflected communication signal power determination apparatus according to any of claims 15-19, a reflected communication signal power determination apparatus according to any of claims 20-22 and a reflected communication signal power determination apparatus according to any of claims 23-28.