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WO2023125311A1 - 信道估计方法、装置、终端、网络侧设备及介质 - Google Patents

信道估计方法、装置、终端、网络侧设备及介质 Download PDF

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Publication number
WO2023125311A1
WO2023125311A1 PCT/CN2022/141567 CN2022141567W WO2023125311A1 WO 2023125311 A1 WO2023125311 A1 WO 2023125311A1 CN 2022141567 W CN2022141567 W CN 2022141567W WO 2023125311 A1 WO2023125311 A1 WO 2023125311A1
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WO
WIPO (PCT)
Prior art keywords
signal
channel estimation
target
information
bsc
Prior art date
Application number
PCT/CN2022/141567
Other languages
English (en)
French (fr)
Inventor
姜大洁
黄伟
简荣灵
Original Assignee
维沃移动通信有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 维沃移动通信有限公司 filed Critical 维沃移动通信有限公司
Priority to EP22914565.1A priority Critical patent/EP4460053A1/en
Priority to KR1020247024984A priority patent/KR20240128957A/ko
Publication of WO2023125311A1 publication Critical patent/WO2023125311A1/zh
Priority to US18/753,542 priority patent/US20240348349A1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/80—Services using short range communication, e.g. near-field communication [NFC], radio-frequency identification [RFID] or low energy communication
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/30—Monitoring; Testing of propagation channels
    • H04B17/309—Measuring or estimating channel quality parameters
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/0202—Channel estimation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/0202—Channel estimation
    • H04L25/0204—Channel estimation of multiple channels
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/0202—Channel estimation
    • H04L25/0222—Estimation of channel variability, e.g. coherence bandwidth, coherence time, fading frequency
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/0202—Channel estimation
    • H04L25/0224—Channel estimation using sounding signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource

Definitions

  • the present application belongs to the technical field of communication, and specifically relates to a channel estimation method, device, terminal, network side equipment and medium.
  • the BSC device can modulate the radio frequency signal sent by other devices to generate a backscatter signal associated with the radio frequency signal, and the backscatter signal carries the information of the BSC device Data information; thus the receiving device can demodulate the backscattered signal to obtain the data information.
  • BSC BackScatter Communication
  • the radio frequency signal may be sent towards the user equipment (User Equipment, UE), at this time, the channel estimation performed by the UE on the radio frequency signal may be affected by the backscatter signal associated with the radio frequency signal , therefore, may affect the performance of the channel estimation. In this way, the performance of the UE to demodulate the radio frequency signal is reduced.
  • UE User Equipment
  • Embodiments of the present application provide a channel estimation method, device, terminal, network side equipment, and medium, which can solve the problem of low performance of UE demodulating radio frequency signals.
  • a channel estimation method which is applied to a UE, and the method includes: the UE receives first target information from a communication device, and the first target information is used to indicate: a parameter of a backscatter signal sent by a BSC device, or Whether to perform joint channel estimation on the first signal; the UE determines whether to perform joint channel estimation on the first signal according to the first target information; wherein, the above-mentioned backscatter signal is obtained by modulating the first signal by the BSC device.
  • a channel estimation device is provided, the channel estimation device is a first channel estimation device, and the first channel estimation device includes: a receiving module and a determining module.
  • the receiving module is configured to receive the first target information from the second channel estimating device, and the first target information is used to indicate: parameters of the backscatter signal sent by the BSC equipment, or whether to perform joint channel estimation on the first signal.
  • the determining module is configured to determine whether to perform joint channel estimation on the first signal according to the first target information received by the receiving module; wherein, the above-mentioned backscatter signal is obtained by modulating the first signal by the BSC device.
  • a channel estimation method which is applied to a communication device, and the method includes: the communication device sends first target information to the UE, where the first target information is used to indicate: parameters of the backscatter signal sent by the BSC device, Or whether to perform joint channel estimation on the first signal.
  • the above-mentioned backscatter signal is: obtained by the BSC device modulating the first signal; and the above-mentioned first target information is used for the UE to determine whether to perform joint channel estimation on the first signal.
  • a channel estimation device is provided, the channel estimation device is a second channel estimation device, and the second channel estimation device includes: a sending module.
  • the sending module is configured to send the first target information to the first channel estimating device, and the first target information is used to indicate: the parameters of the BSC device sending the backscatter signal, or whether to perform joint channel estimation on the first signal.
  • the above-mentioned backscatter signal is: obtained by the BSC device modulating the first signal; and the above-mentioned first target information is used for the UE to determine whether to perform joint channel estimation on the first signal.
  • a terminal in a fifth aspect, includes a processor and a memory, the memory stores programs or instructions that can run on the processor, and when the programs or instructions are executed by the processor, the following The steps of the method described in one aspect, or the steps of implementing the method described in the third aspect.
  • a terminal including a processor and a communication interface, wherein the communication interface is used to receive first target information from a communication device, and the first target information is used to indicate: the BSC device sends a backscatter signal parameter, or whether to perform joint channel estimation on the first signal.
  • the processor is configured to determine whether to perform joint channel estimation on the first signal according to the first target information; wherein, the above-mentioned backscatter signal is obtained by modulating the first signal by the BSC device.
  • a network-side device in a seventh aspect, includes a processor and a memory, the memory stores programs or instructions that can run on the processor, and the programs or instructions are executed by the processor When realizing the steps of the method as described in the third aspect.
  • a network side device including a processor and a communication interface, wherein the communication interface is used to send first target information to the UE, and the first target information is used to indicate: the BSC device sends backscatter parameters of the signal, or whether to perform joint channel estimation on the first signal.
  • the above-mentioned backscatter signal is: obtained by the BSC device modulating the first signal; and the above-mentioned first target information is used for the UE to determine whether to perform joint channel estimation on the first signal.
  • a ninth aspect provides a channel estimation system, including: a terminal and a network-side device, the terminal can be used to perform the steps of the method described in the first aspect, and the network-side device can be used to perform the steps of the method described in the third aspect steps of the method described above.
  • a readable storage medium is provided, and a program or an instruction is stored on the readable storage medium, and when the program or instruction is executed by a processor, the steps of the method described in the first aspect are implemented, or the steps of the method as described in the first aspect are implemented, or the The steps of the method described in the third aspect.
  • a chip in an eleventh aspect, includes a processor and a communication interface, the communication interface is coupled to the processor, and the processor is used to run a program or an instruction to implement the method described in the first aspect. method, or implement the steps of the method as described in the third aspect.
  • a computer program/program product is provided, the computer program/program product is stored in a storage medium, and the computer program/program product is executed by at least one processor to implement the The steps of the method, or realize the steps of the method as described in the third aspect.
  • the UE may receive from the communication device the first target information used to instruct the BSC device to send the parameters of the backscatter signal (or whether to perform joint channel estimation on the first signal), and the backscatter signal is the BSC
  • the device modulates the first signal, so that the UE can determine whether to perform joint channel estimation on the first signal according to the first target information.
  • the UE can determine whether to perform joint channel estimation on the first signal according to the parameters of the backscatter signal sent by the BSC device indicated by the communication device (or whether to perform joint channel estimation on the first signal), instead of directly performing joint channel estimation on the first signal Channel estimation, therefore, can prevent the joint channel estimation performed by the UE on the first signal from being affected by the backscatter signal associated with the first signal, so as to avoid affecting the performance of the channel estimation. In this way, the UE can improve the performance of the radio frequency signal. demodulation performance.
  • FIG. 1 is one of the block diagrams of a wireless communication system provided by an embodiment of the present application
  • FIG. 2 is the second block diagram of a wireless communication system provided by an embodiment of the present application.
  • Fig. 3 is one of the schematic diagrams of the relationship between the length of the time slot/subframe of the time slot/subframe of the radio frequency signal and the transmission duration of each bit of the BSC device;
  • Fig. 4 is the second schematic diagram of the relationship between the transmission duration of each bit of the BSC device and the length of the time slot/subframe of the radio frequency signal;
  • Fig. 5 is the third schematic diagram of the relationship between the transmission duration of each bit of the BSC device and the length of the time slot/subframe of the radio frequency signal;
  • FIG. 6 is one of the schematic flowcharts of the channel estimation method provided by the embodiment of the present application.
  • FIG. 7 is the second schematic flow diagram of the channel estimation method provided by the embodiment of the present application.
  • FIG. 8 is the third schematic flow diagram of the channel estimation method provided by the embodiment of the present application.
  • FIG. 9 is the fourth schematic flow diagram of the channel estimation method provided by the embodiment of the present application.
  • FIG. 10 is one of the schematic structural diagrams of a channel estimation device provided in an embodiment of the present application.
  • FIG. 11 is the second structural schematic diagram of the channel estimation device provided by the embodiment of the present application.
  • FIG. 12 is a schematic structural diagram of a communication device provided by an embodiment of the present application.
  • FIG. 13 is a schematic diagram of a hardware structure of a terminal provided by an embodiment of the present application.
  • FIG. 14 is a schematic diagram of a hardware structure of a network side device provided by an embodiment of the present application.
  • BSC refers to the process in which the BSC equipment modulates the radio frequency signal of other equipment (such as UE, network side equipment, etc.) or the environment, and carries the data information of the BSC equipment on the radio frequency signal.
  • the BSC device can control the reflection coefficient of the circuit of the BSC device by adjusting its internal impedance, thereby changing the amplitude, frequency, phase, etc. of the radio frequency signal to realize the modulation of the radio frequency signal.
  • the BSC device can be a tag (Tag) in a radio frequency identification (Radio Frequency Identification, RFID) system, or a passive (Passive) Internet of Things (Internet of Things, IOT) unit, or an active (Semi-Passive) IOT unit, or Reconfigurable Intelligent meta-Surface (RIS) units in smart metasurfaces, etc.
  • RFID Radio Frequency Identification
  • IOT Internet of Things
  • RIS Reconfigurable Intelligent meta-Surface
  • the signal generated by the BSC device after modulating the radio frequency signal is the backscatter signal associated with the radio frequency signal.
  • first, second and the like in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific sequence or sequence. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments of the application are capable of operation in sequences other than those illustrated or described herein and that "first" and “second” distinguish objects. Generally, it is one category, and the number of objects is not limited. For example, there may be one or more first target information.
  • “and/or” in the description and claims means at least one of the connected objects, and the character “/” generally means that the related objects are an "or” relationship.
  • LTE Long Term Evolution
  • LTE-Advanced LTE-Advanced
  • LTE-A Long Term Evolution-Advanced
  • CDMA Code Division Multiple Access
  • TDMA Time Division Multiple Access
  • FDMA Frequency Division Multiple Access
  • OFDMA Orthogonal Frequency Division Multiple Access
  • SC-FDMA Single-carrier Frequency Division Multiple Access
  • system and “network” in the embodiments of the present application are often used interchangeably, and the described technology can be used for the above-mentioned system and radio technology, and can also be used for other systems and radio technologies.
  • the following description describes the New Radio (New Radio, NR) system for example purposes, and uses NR terminology in most of the following descriptions, but these techniques can also be applied to applications other than NR system applications, such as the 6th generation (6th Generation , 6G) communication system.
  • 6G 6th generation
  • Fig. 1 shows a block diagram of a wireless communication system to which the embodiment of the present application is applicable.
  • the wireless communication system includes a terminal 11 and a network side device 12 .
  • the terminal 11 can be a mobile phone, a tablet computer (Tablet Personal Computer), a laptop computer (Laptop Computer) or a notebook computer, a personal digital assistant (Personal Digital Assistant, PDA), a palmtop computer, a netbook, a super mobile personal computer (ultra-mobile personal computer, UMPC), mobile Internet device (Mobile Internet Device, MID), augmented reality (augmented reality, AR) / virtual reality (virtual reality, VR) equipment, robot, wearable device (Wearable Device) , vehicle equipment (VUE), pedestrian terminal (PUE), smart home (home equipment with wireless communication functions, such as refrigerators, TVs, washing machines or furniture, etc.), game consoles, personal computers (personal computers, PCs), teller machines or self-service Wearable devices include: smart watches, smart bracelets, smart headphones, smart glasses, smart jewelry (
  • the network side device 12 may include an access network device or a core network device, wherein the access network device may also be called a radio access network device, a radio access network (Radio Access Network, RAN), a radio access network function, or a wireless access network unit.
  • the access network equipment may include a base station, a WLAN access point, or a WiFi node, etc.
  • the base station may be called a Node B, an evolved Node B (eNB), an access point, a Base Transceiver Station (BTS), a radio base station , radio transceiver, Basic Service Set (Basic Service Set, BSS), Extended Service Set (Extended Service Set, ESS), Home Node B, Home Evolved Node B, Transmitting Receiving Point (Transmitting Receiving Point, TRP) or the Any other suitable term in the field, as long as the same technical effect is achieved, the base station is not limited to a specific technical vocabulary. Specific types of base stations are defined.
  • the channel estimation method provided in the embodiment of the present application can be applied to a BSC scenario.
  • Fig. 2 shows a block diagram of a wireless communication system to which the embodiment of the present application is applicable.
  • the wireless communication system includes UE21, UE22, BSC equipment 23 and other equipment (such as network side equipment 24).
  • the network side equipment 24 can send a radio frequency signal to the UE21, which carries the data information to be sent by the network side equipment 24, so that the UE21 can receive The data information to be sent by the network side device 24; and, the BSC device 23 can modulate the data information to be sent by the BSC device 23 on the radio frequency signal, and generate a backscatter signal associated with the radio frequency signal, so that the UE22 can receive the data information of the BSC device 23 The data message to send.
  • the channel estimation performed by the UE21 on the radio frequency signal may be affected by the backscatter signal associated with the radio frequency signal, the performance of the channel estimation may be affected.
  • each bit of the BSC device 23 is assumed to be equal to the length of one time slot/subframe of the radio frequency signal, so that the BSC device 23 will occupy one time slot of the radio frequency signal when sending 0. Gap.
  • ASK amplitude Shift Keying
  • UE21 when UE21 performs channel estimation interpolation in a time slot of the radio frequency signal, it will be affected by the backscatter signal associated with the radio frequency signal, so that the first half of the time slot The amplitude discontinuity of the reference signal and the reference signal of the second half time slot affects the performance of channel estimation.
  • the transmission duration of each bit of the BSC device 23 is longer than the length of one time slot/subframe of the radio frequency signal, for example, the transmission duration of each bit of the BSC device 23 is the length of the radio frequency signal.
  • Two time slots/subframes so that the BSC device 23 will occupy two time slots of the radio frequency signal when sending 0.
  • the principle of ASK modulation based on FM0 encoding for example, when the BSC device 23 sends 0, the first time slot is at a high level, and the second time slot is at a low level.
  • it will be affected by the backscatter signal associated with the radio frequency signal, so that the amplitude of the reference signal at the junction of two time slots is discontinuous, which affects the performance of channel estimation.
  • the transmission duration of each bit of the BSC device 23 is less than the length of one time slot/subframe of the radio frequency signal, for example, the transmission duration of each bit of the BSC device 23 is the length of the radio frequency signal. In this way, the BSC device 23 occupies two symbols of the radio frequency signal when sending 0.
  • the BSC device 23 when the BSC device 23 sends 0, the levels of the two symbols are different; when sending 1, the levels of the two symbols are the same; When doing joint channel estimation, it will be affected by the backscatter signal associated with the radio frequency signal, so that the amplitude of the reference signals of the two symbols is discontinuous, which affects the performance of channel estimation.
  • the channel estimation performed by the UE on the radio frequency signal will be affected by the backscatter signal associated with the radio frequency signal, and therefore, the performance of the channel estimation may be affected.
  • UE21 may receive indication information from communication equipment (such as network side equipment, other UEs, BSC equipment, etc.), and the indication information is used to instruct BSC equipment 23 to send backscatter signal parameters (or whether to performing joint channel estimation on radio frequency signals), so that UE21 can directly determine whether to perform joint channel estimation on radio frequency signals according to the indication information, instead of directly performing joint channel estimation on radio frequency signals, thus avoiding affecting the performance of channel estimation.
  • communication equipment such as network side equipment, other UEs, BSC equipment, etc.
  • FIG. 6 shows a flowchart of a channel estimation method provided by an embodiment of the present application.
  • the channel estimation method provided by the embodiment of the present application may include the following steps 101 to 103 .
  • Step 101 the communication device sends first target information to a UE.
  • Step 102 the UE receives first target information from the communication device.
  • the above-mentioned first target information is used to indicate: the parameters of the backscatter signal sent by the BSC device, or whether to perform joint channel estimation on the first signal;
  • the backscatter signal is: the BSC device performs a joint channel estimation on the first signal Obtained through modulation;
  • the first target information is used for the UE to determine whether to perform the joint channel estimation on the first signal.
  • the foregoing communication device includes any of the following: a base station, a BSC device, and other UEs.
  • the base station may be any of the following: other UEs, relay (relay) devices, and device-to-device (Device to Device, D2D) devices , sidelink (sidelink) equipment, etc.
  • the BSC device when the communication device is a BSC device, the BSC device may also be a RIS device; wherein, the power supply source and the radio frequency source (that is, the first signal) of the BSC device may be the same One device, or different devices.
  • the power supply mode of the BSC equipment may include at least one of the following: the BSC equipment supplies power through base station radio frequency signals, the BSC equipment supplies power through other radio frequency signals, and the BSC equipment supplies power through non-radio frequency signals.
  • the non-radio frequency signal energy supply may include: at least one of mechanical energy supply, vibration energy supply, solar energy supply, thermal energy supply, and the like.
  • the base station may pass downlink control information (Downlink Control Information, DCI), or a preamble sequence, or a radio resource control (Radio Resource Control, RRC) signal command, or a Media Access Control (Media Access Control, MAC) control element (Control Element, CE) carrying the first target information, so as to send the first target information to the UE.
  • DCI Downlink Control Information
  • RRC Radio Resource Control
  • MAC Media Access Control
  • the BSC device when the communication device is a BSC device (or other UE), the BSC device (or other UE) can pass two-step direct connection control information (Sidelink Control Information, SCI), or preamble
  • SCI Servicelink Control Information
  • the code sequence carries the first target information, so as to send the first target information to the UE.
  • the foregoing first signal may be a signal or data sent by the communication device to the UE.
  • the first target information may be carried in scheduling signaling (for example, DCI) of the first signal.
  • the parameter in the case where the first target information is used to instruct the BSC device to send a parameter of the backscatter signal, the parameter may include at least one of the following: a time domain parameter, a frequency domain parameter, etc.; the Specifically, the parameter may be sent by the BSC device to the communication device. It can be understood that before the BSC device sends the backscatter signal, the BSC device may report the parameter to the communication device.
  • the first target information is used to indicate whether to perform joint channel estimation on the first signal
  • the first target information is determined by the communication device according to the parameters of the backscatter signal sent by the BSC device
  • the parameter may specifically be sent by the BSC device to the communication device.
  • the first target information is used to indicate: the parameters of the backscatter signal sent by the BSC device; the parameters of the backscatter signal sent by the BSC device include at least the following one item:
  • Target time information the target time information is used to indicate: the time information of the backscatter signal sent by the BSC equipment;
  • the above target time information is specifically used to indicate: a possible time period for the BSC device to send the backscatter signal.
  • the above target time information includes any of the following:
  • First time information where the first time information includes: at least one of aperiodic transmission mode information and aperiodic transmission time information;
  • Second time information where the second time information includes: at least one item of periodic transmission mode information, a transmission period, and time information for periodic transmission.
  • the time information of the aperiodic transmission may specifically be: a possible time period of the aperiodic transmission. For example, 4 am to 5 am in a day, etc.
  • the transmission period may be: the duration of one transmission period (for example, a transmission period of 10 milliseconds (ms), the transmission time of a signal including backscattered signals (for example, 5 ms) and the time of no signal transmission (for example, 5 ms) within one period.
  • the BSC device may perform energy collection.
  • the time information of the periodic transmission may be: a possible time period of the periodic transmission. For example which cycles may transmit information.
  • each period length of at least one period length of the above-mentioned backscatter signal may be: the length of a subframe or time slot, the number of symbols contained in a subframe or time slot, etc. at least one of the .
  • the symbol length of the foregoing backscatter signal may be: the length of time taken by the BSC device to send 0 or 1.
  • sending 0 or 1 occupies one subframe or time slot.
  • the transmission duration of the foregoing backscatter signal may specifically be: the period length of the transmission of the backscatter signal. It can be understood that the UE needs to buffer the backscattered signal of the transmission duration before demodulating.
  • the modulation manner of the foregoing backscatter signal may be: a modulation manner based on FMO coding.
  • the encoding manner of the foregoing backscatter signal may be: Miller (Miller) encoding, Manchester encoding, FMO encoding, and the like.
  • the coding mode determines the minimum time granularity of the high-low level transition in one symbol.
  • the above-mentioned delimiter is used to indicate: the starting time of the backscatter signal; the above-mentioned preamble is used for the receiving device of the backscatter signal to perform synchronization or channel estimation.
  • the synchronization-related information of the BSC device includes at least one of the following:
  • Deviation information between the timing of the BSC device and the target timing includes any of the following: the timing of the first signal and the timing of the communication device.
  • the starting time of the symbol or the time slot of the foregoing backscatter signal may specifically be: an absolute time or a relative time.
  • the starting time is T1
  • the starting time of the symbol or time slot of the backscatter signal is T1.
  • the starting moment of the symbol or time slot of the backscatter signal can be: the moment before (or after) T1 of the target moment; wherein, the target moment can be the first signal The start moment of a symbol or slot.
  • the above-mentioned information related to the frequency shift performed by the BSC device on the first signal includes at least one of the following:
  • the aforementioned target duration is: the minimum duration during which the amplitude and phase of the backscattered signal remain unchanged.
  • the minimum time length during which the amplitude and phase of the above-mentioned backscatter signal remain unchanged may specifically be: an absolute value, or a time unit length.
  • the time unit may be any of the following: time slot, subframe, symbol, mini-slot, mini-slot, and so on.
  • the minimum time length during which the amplitude and phase of the backscatter signal remain unchanged may be 1 ms, or at least two symbol lengths of the first signals, or at least two subframe or time slot lengths of the first signals.
  • the first target information is used to indicate: whether to perform joint channel estimation on the first signal; the first target information includes at least one of the following:
  • First indication information where the first indication information is used to indicate: the UE does not perform joint channel estimation on the first signal within M time units;
  • Second indication information where the second indication information is used to indicate: the UE performs joint channel estimation on the first signal within M time units;
  • third indication information where the third indication information is used to indicate: the UE does not perform joint channel estimation of T symbols on the first signal;
  • Fourth indication information where the fourth indication information is used to indicate: the UE performs joint channel estimation of T symbols on the first signal;
  • the fifth indication information is used to indicate that: the UE performs joint channel estimation on the first signal within R time units.
  • T symbols are symbols in the same time unit, M and T are both positive integers greater than 1, and R is a decimal greater than 0 and less than 1.
  • R may specifically be a decimal greater than 0.5 and less than 1.
  • R can be 0.6, or 0.75, etc.
  • the communication device can pre-configure the parameters of the BSC device to send the backscatter signal, or the communication device can obtain the parameters of the BSC device to send the backscatter signal from other devices (such as the BSC device, other UEs, etc.) in advance , so that the communication device can send the first target information to the UE according to the parameter.
  • the communication device obtains the parameters of the backscattered signal:
  • the channel estimation method provided in the embodiment of the present application may further include the following step 201 .
  • Step 201 the communication device receives second target information from the first device.
  • the above-mentioned second target information is used to indicate: the parameters of the backscatter signal sent by the BSC device; the above-mentioned first target information is determined according to the second target information; the above-mentioned first device includes any of the following: The above-mentioned BSC equipment and other UEs.
  • the first target information is determined by the communication device according to the second target information. It can be understood that the content indicated by the second target information is a subset or the whole set of the content indicated by the first target information.
  • the communication device when the communication device establishes a connection with the first device, the communication device may receive the second target information from the first device.
  • the parameter for the BSC device to send the backscatter signal is: the BSC device reports to other UEs before it sends the signal.
  • the communication device may specifically be a base station.
  • the communication device may receive the parameter of the backscatter signal sent by the BSC device from the BSC device (or other UE).
  • the communication device can directly receive the parameters of the backscatter signal sent by the BSC device from the BSC device (or other UEs), the communication device can accurately determine the parameters of the backscatter signal, or accurately determine whether the UE is sensitive to the first Joint channel estimation is performed on the signals, so that the UE can accurately determine whether to perform joint channel estimation on the first signal, and thus, it is possible to avoid affecting the channel estimation performance of the UE.
  • the channel estimation method provided in the embodiment of the present application may further include the following step 301.
  • Step 301 The communication device sends a fifth request message to the first device.
  • the above fifth request message is used to request: the BSC device sends parameters of the backscatter signal.
  • the communication device when the communication device establishes a connection with the first device, the communication device may send the fifth request message to the first device.
  • the communication device can directly request the first device for the parameters of the BSC device to send the backscatter signal, it can avoid the situation that the BSC device (or other UE) cannot send the parameter to the communication device due to network quality problems, In this way, the situation that the communication device cannot obtain the parameter can be avoided.
  • Step 103 the UE determines whether to perform joint channel estimation on the first signal according to the first target information.
  • the UE may also determine to perform joint channel estimation according to the first target information.
  • the manner of estimation is used to perform joint channel estimation in this manner on the first signal.
  • the joint channel estimation in the embodiments of the present application mainly refers to interpolation in channel estimation, including time domain interpolation.
  • the channel response or channel state information on the reference signal resource element (Resource element, RE) at two different time points the channel response or channel state information on other REs at the two time points or on REs at other time points are obtained.
  • RE reference signal resource element
  • Example 1 the first target information is used to indicate: the parameters of the backscatter signal sent by the BSC device:
  • the first target information includes: the target duration.
  • the above step 103 may be implemented through the following step 103a.
  • Step 103a when the target time-frequency resource for sending the backscatter signal by the BSC device overlaps with the time-frequency resource for the first signal, the UE determines to perform joint channel estimation within the target duration.
  • the foregoing target time-frequency resource is determined according to the first target information.
  • the target time-frequency resource may include: a first time-domain resource and a first frequency-domain resource.
  • the first time domain resource is used to indicate a possible time period for the BSC device to send the backscatter signal.
  • the target time-frequency resource overlaps with the time-frequency resource of the first signal may be understood as: complete or partial overlap, which is not limited in this embodiment of the present application.
  • the UE determines to perform joint channel estimation.
  • the UE will perform joint channel estimation within the minimum time length in which the amplitude and phase of the backscatter signal are unchanged, so as to avoid the joint channel estimation being affected by the backscatter signal, thereby avoiding the amplitude discontinuity of the signal The problem.
  • the UE can perform joint channel estimation within the target duration, thus avoiding the signal amplitude discontinuity problem, so as to avoid affecting the performance of channel estimation.
  • step 103a may be specifically implemented through the following step 103a1.
  • Step 103a1 when the target time-frequency resource of the BSC device sending the backscatter signal overlaps with the time-frequency resource of the first signal, and if the target duration is greater than or equal to the length of N time units of the first signal, the UE It is determined to perform joint channel estimation within N time units within the target duration.
  • N is a positive integer.
  • N may specifically be 1.
  • the foregoing time unit may specifically be: a time slot or a subframe.
  • the target duration is greater than or equal to the length of N time units of the first signal, it can be considered that within the length of N time units, the amplitude and phase of the backscatter signal are constant, that is, N Within N time units, the joint channel estimation performed on the first signal is not affected by the backscatter signal, therefore, the UE may perform joint channel estimation within N time units.
  • the UE may determine a manner of performing joint channel estimation according to the target duration and the length of the time unit of the first signal.
  • step 103a1 may also be replaced by the following step 103a2.
  • Step 103a2 In the case where the target time-frequency resource of the backscatter signal sent by the BSC device overlaps with the time-frequency resource of the first signal, and if the target duration is less than the length of N time units of the first signal, the UE determines that in Joint channel estimation within N time units is not performed within the target duration.
  • the UE may determine that the target duration Perform joint channel estimation within X time units, where X is a positive integer smaller than N.
  • the target duration is less than the length of N time units of the first signal, it can be considered that within the length of N time units, the amplitude and phase of the backscattered signal may change, that is, N In the time unit, the joint channel estimation performed on the first signal may be affected by the backscatter signal, therefore, the UE may not perform the joint channel estimation in N time units.
  • the UE determines to perform joint channel estimation on the first signal.
  • the UE can directly perform joint channel estimation on the first signal.
  • Example 2 the first target information is used to indicate: whether to perform joint channel estimation on the first signal:
  • step 103 may be specifically implemented through the following step 103b or step 103c or step 103d or step 103e or step 103f.
  • Step 103b In a case where the first target information includes the first indication information, the UE determines not to perform joint channel estimation on the first signal within M time units.
  • Step 103c if the first target information includes the second indication information, the UE determines to perform joint channel estimation on the first signal within M time units.
  • Step 103d if the first target information includes the third indication information, the UE determines not to perform joint channel estimation of T symbols on the first signal.
  • Step 103e if the first target information includes the fourth indication information, the UE determines to perform joint channel estimation of T symbols on the first signal.
  • Step 103f if the first target information includes fifth indication information, the UE determines to perform joint channel estimation on the first signal within R time units.
  • the UE may perform joint channel estimation in a manner indicated by the first target information on the first signal, or may not perform joint channel estimation in a manner indicated by the first target information.
  • the UE may receive the first target information from the communication device to indicate the parameters of the BSC device sending the backscatter signal (or whether to perform joint channel estimation on the first signal), the backscatter The signal is obtained by the BSC device modulating the first signal, so that the UE can determine whether to perform joint channel estimation on the first signal according to the first target information.
  • the UE can determine whether to perform joint channel estimation on the first signal according to the parameters of the backscatter signal sent by the BSC device indicated by the communication device (or whether to perform joint channel estimation on the first signal), instead of directly performing joint channel estimation on the first signal Channel estimation, therefore, can prevent the joint channel estimation performed by the UE on the first signal from being affected by the backscatter signal associated with the first signal, so as to avoid affecting the performance of the channel estimation. In this way, the UE can improve the performance of the radio frequency signal. demodulation performance.
  • the UE may receive the first target information from the communication device in a variety of different situations, specifically as follows:
  • the UE may directly receive the first target information from the communication device when establishing a connection with the communication device.
  • the UE can send a request to the communication device so that the communication device can send the first target information to the UE.
  • the following will use the first target information to instruct the BSC device to send the parameters of the backscatter signal as an example to illustrate:
  • the channel estimation method provided in this embodiment of the present application may further include the following steps 401 and 402 .
  • Step 401 the UE sends a first request message to the communication device.
  • Step 402 the communication device receives a first request message from the UE.
  • the foregoing first request message is used to request: the BSC device sends parameters of the backscatter signal.
  • the communication device may directly send the first target information to the UE according to the first request message.
  • the channel estimation method provided in the embodiment of the present application may further include the following step 501.
  • Step 501 In a case where the UE determines that the received signal is associated with a backscatter signal, the UE sends a first request message to the communication device.
  • the UE may detect the received signal to determine whether there is a periodic discontinuity (such as a periodic jump) in the amplitude of the signal in different time units (such as different time slots). change) to determine if the signal is associated with a backscatter signal. If the amplitude of the signal shows periodic discontinuity (for example, periodic jump) in different time units (for example, different time slots), it can be determined that the signal is associated with a backscatter signal, that is, the BSC device sends itself information is modulated on this signal.
  • a periodic discontinuity such as a periodic jump
  • time units such as different time slots
  • the UE determines that the received signal is associated with the backscatter signal, it can be considered that the joint channel estimation performed on the first signal may be affected by the backscatter signal associated with the first signal, so as to affect the UE The performance of performing channel estimation, therefore, the UE can request the communication device for the parameters of the backscatter signal sent by the BSC device.
  • the UE may detect whether the UE meets a preset condition (for example, whether the signal received by the UE is associated with the backscatter signal) according to the request of the communication device, and determine that the signal received by the UE is associated with the backscatter signal.
  • a preset condition for example, whether the signal received by the UE is associated with the backscatter signal
  • the UE may send a request to the communication device, so that the communication device may send the first target information to the UE, and the first target information will be used to instruct the BSC device to send the backscatter signal below.
  • the parameters of the scattered signal as an example, for example:
  • the channel estimation method provided by the embodiment of this application may further include the following steps 601 to 603, and the above steps 101 can be specifically implemented through the following step 101a.
  • Step 601 the communication device sends a second request message to the UE.
  • Step 602 the UE receives a second request message from the communication device.
  • the above second request message is used to request that the UE determine whether the received signal is associated with a backscatter signal.
  • the above-mentioned second request message includes at least one of the following:
  • a third request message where the third request message is used to request: the UE determines whether the signal received on the target resource is associated with a backscatter signal, and the target resource includes at least one of the following: a target time domain resource and a target frequency domain resource;
  • the identifier of the above-mentioned BSC device may specifically be: a device digital identifier (Identity Document, ID) of the BSC device.
  • Step 603 In a case where the UE determines that the received signal is associated with a backscatter signal, the UE sends a first feedback message to the communication device.
  • the foregoing first feedback message is used to indicate that the signal received by the UE is associated with the backscatter signal.
  • the above-mentioned first target information is sent by the communication device after receiving the first feedback message.
  • Step 101a when the communication device receives the first feedback message from the UE, send the first target information to the UE.
  • the communication device since the UE can determine whether the signal received by the UE is associated with the backscatter signal according to the request of the communication device, the communication device sends the first target information to the UE only when the UE determines that the received signal is associated with the backscatter signal , so that the UE can determine whether to perform joint channel estimation, and therefore, the power consumption of the UE can be reduced.
  • the channel estimation method provided in the embodiment of the present application may be executed by a UE (or a communication device).
  • the channel estimation method provided by the embodiment of the present application is described by taking the channel estimation method performed by the UE (or a communication device) as an example.
  • FIG. 10 shows a schematic diagram of a possible structure of a channel estimation device involved in an embodiment of the present application, where the channel estimation device is a first channel estimation device.
  • the first channel estimation device 60 may include: a receiving module 61 and a determining module 62 .
  • the receiving module 61 is configured to receive the first target information from the second channel estimating device, the first target information is used to indicate: the parameter of the backscatter signal sent by the BSC equipment, or whether to perform joint channel estimation on the first signal.
  • the determining module 62 is configured to determine whether to perform joint channel estimation on the first signal according to the first target information received by the receiving module 61 .
  • the foregoing backscatter signal is obtained by modulating the first signal by the BSC device.
  • the first target information is used to indicate: the parameter of the backscatter signal sent by the BSC device; the parameter of the backscatter signal sent by the BSC device includes at least one of the following: target time information, the target The time information is used to indicate: the time information of the backscatter signal sent by the BSC device; at least one cycle length of the backscatter signal; the symbol length of the backscatter signal; the transmission duration of the backscatter signal; the modulation mode of the backscatter signal ; Coding method of backscatter signal; length of delimiter of backscatter signal; time offset of delimiter; length of preamble of backscatter signal; time offset of preamble; synchronization correlation of BSC equipment information; related information about the frequency shift performed by the BSC equipment on the first signal; target duration.
  • the above-mentioned delimiter is used to indicate: the starting moment of the backscatter signal; the above-mentioned target duration is: the minimum time
  • the above target time information includes any of the following: first time information, and the first time information includes: at least one of aperiodic transmission mode information and aperiodic transmission time information ; Second time information, where the second time information includes: at least one item of periodic transmission mode information, transmission period, and time information for periodic transmission.
  • the synchronization-related information of the BSC device includes at least one of the following: the symbol of the backscatter signal or the starting moment of the time slot; the deviation information between the timing of the BSC device and the target timing,
  • the target timing includes any of the following: the timing of the first signal, and the timing of the second channel estimation device.
  • the above-mentioned information related to the frequency shift performed by the BSC device on the first signal includes at least one of the following: whether frequency shift is supported; a center frequency point after the frequency point shift; and a bandwidth after the frequency point shift.
  • the above first target information includes: target duration; the above determining module 62 is specifically used for when the target time-frequency resource of the BSC device sending the backscatter signal overlaps with the time-frequency resource of the first signal In this case, it is determined to perform joint channel estimation within the target duration.
  • the above-mentioned target time-frequency resource is determined according to the first target information.
  • the above-mentioned determination module 62 is specifically configured to determine to perform the joint within N time units within the target duration when the target duration is greater than or equal to the length of N time units of the first signal channel estimation.
  • the determination module 62 is further configured to determine not to perform joint channel estimation within N time units within the target time length when the target time length is less than the length of N time units of the first signal.
  • N is a positive integer.
  • the first target information is used to indicate whether to perform joint channel estimation on the first signal;
  • the first target information includes at least one of the following items: first indication information, and the first indication information uses For indicating: the first channel estimating device 60 does not perform joint channel estimation on the first signal within M time units; second indicating information, the second indicating information is used to indicate: the first channel estimating device 60 performs M on the first signal Joint channel estimation within time units; third indication information, the third indication information is used to indicate: the first channel estimation device 60 does not perform joint channel estimation of T symbols on the first signal; fourth indication information, the fourth The indication information is used to indicate: the first channel estimation device 60 performs joint channel estimation of T symbols on the first signal; the fifth indication information is used to indicate: the first channel estimation device 60 performs joint channel estimation on the first signal Joint channel estimation in R time units.
  • T symbols are symbols in the same time unit, M and T are both positive integers greater than 1, and R is a decimal greater than 0 and less than 1.
  • the above-mentioned determining module 62 is specifically configured to determine not to perform joint channel estimation on the first signal within M time units when the first target information includes the first indication information; or, in If the first target information includes the second indication information, determine to perform joint channel estimation on the first signal within M time units; or, if the first target information includes the third indication information, determine not to perform joint channel estimation on the first signal Perform joint channel estimation of T symbols; or, in the case where the first target information includes the fourth indication information, determine to perform joint channel estimation of T symbols on the first signal; or, when the first target information includes the fifth indication In the case of information, it is determined to perform joint channel estimation on the first signal within R time units.
  • the foregoing second channel estimation device includes any one of the following: a base station, a BSC device, and other channel estimation devices.
  • the first target information is determined by the second channel estimation device according to the second target information.
  • the above-mentioned second target information is used to indicate: the parameters of the backscatter signal sent by the BSC equipment; the second target information is sent by the first device to the second channel estimation device, and the first device includes any of the following: BSC equipment, other channel estimation devices.
  • the foregoing first channel estimation device further includes: a sending module.
  • the sending module is configured to send a first request message to the second channel estimating apparatus, where the first request message is used to request: the BSC device sends parameters of the backscatter signal.
  • the above-mentioned sending module is specifically configured to send the first request message to the second channel estimating device when the first channel estimating device 60 determines that the received signal is associated with a backscatter signal.
  • the receiving module 61 is further configured to receive a second request message from the second channel estimating device, where the second request message is used to request: the first channel estimating device 60 determines whether the received signal is associated with backscatter signal; and in the case that the first channel estimating device 60 determines that the received signal is associated with the backscatter signal, send a first feedback message to the second channel estimating device, the first feedback message is used to indicate: the first channel
  • the signals received by the estimation means 60 are associated with backscattered signals.
  • the above-mentioned first target information is sent by the second channel estimation device when receiving the first feedback message.
  • the above-mentioned second request message includes at least one of the following: a third request message, and the third request message is used to request: the first channel estimation device 60 determines whether the signal received on the target resource is associated with The backscatter signal, the target resource includes at least one of the following: a target time domain resource and a target frequency domain resource; a fourth request message, the fourth request message is used to request: the first channel estimation device 60 determines whether the target sequence is received Information, the target sequence information is associated with the identity of the BSC equipment, or associated with the scrambling sequence of the backscatter signal.
  • the channel estimation device provided by the embodiment of the present application is the first channel estimation device, because the first channel estimation device can transmit the parameters of the backscatter signal according to the BSC equipment indicated by the second channel estimation device (or whether to the second channel estimation device) performing joint channel estimation on one signal), determining whether to perform joint channel estimation on the first signal, rather than directly performing joint channel estimation on the first signal, therefore, joint channel estimation performed on the first signal by the first channel estimation device can be avoided, Being affected by the backscatter signal associated with the first signal can avoid affecting the performance of channel estimation, thus improving the performance of the radio frequency signal demodulation by the first channel estimation device.
  • the first channel estimation apparatus in the embodiment of the present application may be an electronic device, such as an electronic device with an operating system, or a component in the electronic device, such as an integrated circuit or a chip.
  • the electronic device may be a terminal, or other devices other than the terminal.
  • the terminal may include, but not limited to, the types of terminal 11 listed above, and other devices may be servers, Network Attached Storage (NAS), etc., which are not specifically limited in this embodiment of the present application.
  • NAS Network Attached Storage
  • the first channel estimation device provided in the embodiment of the present application can realize various processes realized by the method embodiments in FIG. 6 to FIG. 9 and achieve the same technical effect. To avoid repetition, details are not repeated here.
  • FIG. 11 shows a possible structural diagram of a channel estimation device involved in an embodiment of the present application, where the channel estimation device is a second channel estimation device.
  • the second channel estimation apparatus 70 may include: a sending module 71 .
  • the sending module 71 is configured to send the first target information to the first channel estimating device, and the first target information is used to indicate: the parameters of the backscatter signal sent by the BSC device, or whether to perform joint channel estimation on the first signal.
  • the above-mentioned backscatter signal is obtained by: the BSC equipment modulates the first signal; and the above-mentioned first target information is used by the first channel estimating device to determine whether to perform joint channel estimation on the first signal.
  • the foregoing second channel estimation apparatus 70 further includes: a receiving module.
  • the receiving module is configured to receive the second target information from the first device.
  • the above-mentioned second target information is used to indicate: the parameters of the backscatter signal sent by the BSC equipment; the above-mentioned first target information is determined according to the second target information; the first device includes any of the following: BSC equipment, other channel estimation device.
  • the sending module 71 is further configured to send a fifth request message to the first device, where the fifth request message is used to request: the BSC device to send parameters of the backscatter signal.
  • the sending module 71 is further configured to send a second request message to the first channel estimation device, where the second request message is used to request: the first channel estimation device determines whether the received signal is associated with scatter signal.
  • the above-mentioned sending module 71 is specifically configured to send the first target information to the first channel estimating device when the second channel estimating device 70 receives the first feedback message from the first channel estimating device.
  • the above-mentioned first feedback message is used to indicate that: the signal received by the first channel estimation device is associated with a backscatter signal.
  • the channel estimation device provided in the embodiment of the present application is the second channel estimation device, since the first channel estimation device can transmit the parameters of the backscatter signal according to the BSC equipment indicated by the second channel estimation device (or whether to the second channel estimation device) performing joint channel estimation on one signal), determining whether to perform joint channel estimation on the first signal, rather than directly performing joint channel estimation on the first signal, therefore, joint channel estimation performed on the first signal by the first channel estimation device can be avoided, Being affected by the backscatter signal associated with the first signal can avoid affecting the performance of channel estimation, thus improving the performance of the radio frequency signal demodulation by the first channel estimation device.
  • the second channel estimation apparatus in the embodiment of the present application may be an electronic device, such as an electronic device with an operating system, or a component in the electronic device, such as an integrated circuit or a chip.
  • the electronic device may be a terminal, or other devices other than the terminal.
  • the terminal may include, but not limited to, the types of terminal 11 listed above, and other devices may be servers, Network Attached Storage (NAS), etc., which are not specifically limited in this embodiment of the present application.
  • NAS Network Attached Storage
  • the second channel estimation apparatus provided in the embodiment of the present application can realize each process realized by the method embodiments in FIG. 6 to FIG. 9 and achieve the same technical effect. To avoid repetition, details are not repeated here.
  • the embodiment of the present application also provides a communication device 80, including a processor 81 and a memory 82.
  • the memory 82 stores information that can run on the processor 81.
  • the communication device 80 is a terminal
  • the program or instruction is executed by the processor 81
  • each step of the channel estimation method embodiment described above can be realized, and the same technical effect can be achieved.
  • the communication device 80 is a network-side device
  • the program or instruction is executed by the processor 81
  • each step of the channel estimation method embodiment described above can be achieved, and the same technical effect can be achieved. To avoid repetition, details are not repeated here.
  • the embodiment of the present application also provides a terminal, including a processor and a communication interface, the communication interface is used to receive first target information from a communication device, and the first target information is used to indicate: the parameters of the backscatter signal sent by the BSC device , or whether to perform joint channel estimation on the first signal; the processor is configured to determine whether to perform joint channel estimation on the first signal according to the first target information.
  • the foregoing backscatter signal is obtained by modulating the first signal by the BSC device.
  • This terminal embodiment corresponds to the above-mentioned terminal-side method embodiment, and each implementation process and implementation mode of the above-mentioned method embodiment can be applied to this terminal embodiment, and can achieve the same technical effect.
  • FIG. 13 is a schematic diagram of a hardware structure of a terminal implementing an embodiment of the present application.
  • the terminal 100 includes but not limited to: a radio frequency unit 101, a network module 102, an audio output unit 103, an input unit 104, a sensor 105, a display unit 106, a user input unit 107, an interface unit 108, a memory 109 and a processor 110, etc. At least some parts.
  • the terminal 100 may also include a power supply (such as a battery) for supplying power to various components, and the power supply may be logically connected to the processor 110 through the power management system, so as to manage charging, discharging, and power consumption through the power management system. Management and other functions.
  • a power supply such as a battery
  • the terminal structure shown in FIG. 13 does not constitute a limitation on the terminal.
  • the terminal may include more or fewer components than shown in the figure, or combine some components, or arrange different components, which will not be repeated here.
  • the input unit 104 may include a graphics processing unit (Graphics Processing Unit, GPU) 1041 and a microphone 1042, and the graphics processor 1041 is used in a video capture mode or an image capture mode by an image capture device (such as the image data of the still picture or video obtained by the camera) for processing.
  • the display unit 106 may include a display panel 1061, and the display panel 1061 may be configured in the form of a liquid crystal display, an organic light emitting diode, or the like.
  • the user input unit 107 includes at least one of a touch panel 1071 and other input devices 1072 .
  • the touch panel 1071 is also called a touch screen.
  • the touch panel 1071 may include two parts, a touch detection device and a touch controller.
  • Other input devices 1072 may include, but are not limited to, physical keyboards, function keys (such as volume control keys, switch keys, etc.), trackballs, mice, and joysticks, which will not be repeated here.
  • the radio frequency unit 101 after the radio frequency unit 101 receives the downlink data from the network side device, it can transmit it to the processor 110 for processing; in addition, the radio frequency unit 101 can send the uplink data to the network side device.
  • the radio frequency unit 101 includes, but is not limited to, an antenna, an amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like.
  • the memory 109 can be used to store software programs or instructions as well as various data.
  • the memory 109 can mainly include a first storage area for storing programs or instructions and a second storage area for storing data, wherein the first storage area can store an operating system, an application program or instructions required by at least one function (such as a sound playing function, image playback function, etc.), etc.
  • memory 109 may include volatile memory or nonvolatile memory, or, memory 109 may include both volatile and nonvolatile memory.
  • the non-volatile memory can be read-only memory (Read-Only Memory, ROM), programmable read-only memory (Programmable ROM, PROM), erasable programmable read-only memory (Erasable PROM, EPROM), electronically programmable Erase Programmable Read-Only Memory (Electrically EPROM, EEPROM) or Flash.
  • ROM Read-Only Memory
  • PROM programmable read-only memory
  • Erasable PROM Erasable PROM
  • EPROM erasable programmable read-only memory
  • Electrical EPROM Electrical EPROM
  • EEPROM electronically programmable Erase Programmable Read-Only Memory
  • Volatile memory can be random access memory (Random Access Memory, RAM), static random access memory (Static RAM, SRAM), dynamic random access memory (Dynamic RAM, DRAM), synchronous dynamic random access memory (Synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (Double Data Rate SDRAM, DDRSDRAM), enhanced synchronous dynamic random access memory (Enhanced SDRAM, ESDRAM), synchronous connection dynamic random access memory (Synch link DRAM , SLDRAM) and Direct Memory Bus Random Access Memory (Direct Rambus RAM, DRRAM).
  • RAM Random Access Memory
  • SRAM static random access memory
  • DRAM dynamic random access memory
  • DRAM synchronous dynamic random access memory
  • SDRAM double data rate synchronous dynamic random access memory
  • Double Data Rate SDRAM Double Data Rate SDRAM
  • DDRSDRAM double data rate synchronous dynamic random access memory
  • Enhanced SDRAM, ESDRAM enhanced synchronous dynamic random access memory
  • Synch link DRAM , SLDRAM
  • Direct Memory Bus Random Access Memory Direct Rambus
  • the processor 110 may include one or more processing units; optionally, the processor 110 integrates an application processor and a modem processor, wherein the application processor mainly handles operations related to the operating system, user interface, and application programs, etc., Modem processors mainly process wireless communication signals, such as baseband processors. It can be understood that the foregoing modem processor may not be integrated into the processor 110 .
  • the radio frequency unit 101 is configured to receive first target information from the communication device, where the first target information is used to indicate: parameters of the backscatter signal sent by the BSC device, or whether to perform joint channel estimation on the first signal.
  • the processor 110 is configured to determine whether to perform joint channel estimation on the first signal according to the first target information.
  • the foregoing backscatter signal is obtained by modulating the first signal by the BSC device.
  • the terminal since the terminal can determine whether to perform joint channel estimation on the first signal according to the parameters of the backscatter signal sent by the BSC device indicated by the communication device (or whether to perform joint channel estimation on the first signal), and Joint channel estimation is not directly performed on the first signal. Therefore, the joint channel estimation performed by the terminal on the first signal can be prevented from being affected by the backscatter signal associated with the first signal, thereby avoiding affecting the performance of the channel estimation. , which can improve the performance of the terminal for demodulating the radio frequency signal.
  • the first target information includes: target duration.
  • the processor 110 is specifically configured to determine to perform joint channel estimation within the target duration when the target time-frequency resource for sending the backscatter signal by the BSC device overlaps with the time-frequency resource for the first signal.
  • the above-mentioned target time-frequency resource is determined according to the first target information.
  • the terminal can perform joint channel estimation within the target duration, so that the amplitude of the signal can be avoided. problem, so as to avoid affecting the performance of channel estimation.
  • the processor 110 is specifically configured to determine to perform the combination within N time units within the target duration when the target duration is greater than or equal to the length of N time units of the first signal. channel estimation.
  • the processor 110 is further configured to determine not to perform joint channel estimation within N time units within the target time length when the target time length is less than the length of N time units of the first signal.
  • N is a positive integer.
  • the processor 110 is specifically configured to determine not to perform joint channel estimation on the first signal within M time units when the first target information includes the first indication information; or, in If the first target information includes the second indication information, determine to perform joint channel estimation on the first signal within M time units; or, if the first target information includes the third indication information, determine not to perform joint channel estimation on the first signal Perform joint channel estimation of T symbols; or, in the case where the first target information includes the fourth indication information, determine to perform joint channel estimation of T symbols on the first signal; or, when the first target information includes the fifth indication In the case of information, it is determined to perform joint channel estimation on the first signal within R time units.
  • the radio frequency unit 101 is further configured to send a first request message to the communication device, where the first request message is used to request: the BSC device sends parameters of the backscatter signal.
  • the radio frequency unit 101 is specifically configured to send the first request message to the communication device when the terminal determines that the received signal is associated with the backscatter signal.
  • the radio frequency unit 101 is further configured to receive a second request message from the communication device, where the second request message is used to request: the terminal determines whether the received signal is associated with a backscatter signal; In a case where it is determined that the received signal is associated with the backscatter signal, a first feedback message is sent to the communication device, where the first feedback message is used to indicate that the signal received by the terminal is associated with the backscatter signal.
  • the above-mentioned first target information is sent by the communication device after receiving the first feedback message.
  • the embodiment of the present application also provides a network side device, including a processor and a communication interface, the communication interface is used to send the first target information to the terminal, and the first target information is used to indicate: the BSC device sends the backscatter signal parameter, or whether to perform joint channel estimation on the first signal.
  • the foregoing backscatter signal is obtained by: the BSC device modulating the first signal; the foregoing first target information is used by the terminal to determine whether to perform joint channel estimation on the first signal.
  • the network-side device embodiment corresponds to the above-mentioned network-side device method embodiment, and each implementation process and implementation mode of the above-mentioned method embodiment can be applied to this network-side device embodiment, and can achieve the same technical effect.
  • the embodiment of the present application also provides a network side device.
  • the network side device 200 includes: an antenna 201 , a radio frequency device 202 , a baseband device 203 , a processor 204 and a memory 205 .
  • the antenna 201 is connected to the radio frequency device 202 .
  • the radio frequency device 202 receives information through the antenna 201, and sends the received information to the baseband device 203 for processing.
  • the baseband device 203 processes the information to be sent and sends it to the radio frequency device 202
  • the radio frequency device 202 processes the received information and sends it out through the antenna 201 .
  • the method performed by the network side device in the above embodiments may be implemented in the baseband device 203, where the baseband device 203 includes a baseband processor.
  • the baseband device 203 may include at least one baseband board, for example, a plurality of chips are arranged on the baseband board, as shown in FIG.
  • the program executes the operations of the network side device shown in the above method embodiments.
  • the network side device may also include a network interface 206, such as a common public radio interface (common public radio interface, CPRI).
  • a network interface 206 such as a common public radio interface (common public radio interface, CPRI).
  • the network side device 200 in the embodiment of the present invention further includes: instructions or programs stored in the memory 205 and executable on the processor 204, and the processor 204 calls the instructions or programs in the memory 205 to execute the various programs shown in FIG.
  • the method of module execution achieves the same technical effect, so in order to avoid repetition, it is not repeated here.
  • the embodiment of the present application also provides a readable storage medium.
  • the readable storage medium stores programs or instructions.
  • the program or instructions are executed by the processor, the various processes of the above-mentioned channel estimation method embodiments can be achieved, and the same To avoid repetition, the technical effects will not be repeated here.
  • the processor is the processor in the terminal described in the foregoing embodiments.
  • the readable storage medium includes a computer-readable storage medium, such as a computer read-only memory ROM, a random access memory RAM, a magnetic disk or an optical disk, and the like.
  • the embodiment of the present application further provides a chip, the chip includes a processor and a communication interface, the communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement the above channel estimation method embodiment
  • the chip includes a processor and a communication interface
  • the communication interface is coupled to the processor
  • the processor is used to run programs or instructions to implement the above channel estimation method embodiment
  • the chip mentioned in the embodiment of the present application may also be called a system-on-chip, a system-on-chip, a system-on-a-chip, or a system-on-a-chip.
  • the embodiment of the present application further provides a computer program/program product, the computer program/program product is stored in a storage medium, and the computer program/program product is executed by at least one processor to implement the above channel estimation method embodiment
  • the computer program/program product is stored in a storage medium, and the computer program/program product is executed by at least one processor to implement the above channel estimation method embodiment
  • the embodiment of the present application also provides a channel estimation system, including: a terminal and a network-side device, the terminal can be used to perform the steps of the channel estimation method as described above, and the network-side device can be used to perform the channel estimation method as described above Estimation method steps.
  • the term “comprising”, “comprising” or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article or apparatus comprising a set of elements includes not only those elements, It also includes other elements not expressly listed, or elements inherent in the process, method, article, or device. Without more limitations, an element defined by the phrase “comprising a” does not preclude the presence of additional same elements in the process, method, article or apparatus that includes the element.
  • the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved. Functions are performed, for example, the described methods may be performed in an order different from that described, and various steps may also be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.
  • the methods of the above embodiments can be implemented by means of software plus a necessary general-purpose hardware platform, and of course also by hardware, but in many cases the former is better implementation.
  • the technical solution of the present application can be embodied in the form of computer software products, which are stored in a storage medium (such as ROM/RAM, magnetic disk, etc.) , CD-ROM), including several instructions to enable a terminal (which may be a mobile phone, computer, server, air conditioner, or network-side device, etc.) to execute the methods described in various embodiments of the present application.

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Abstract

本申请公开了一种信道估计方法、装置、终端、网络侧设备及介质，属于通信技术领域，本申请实施例提供的信道估计方法，包括：UE从通信设备接收第一目标信息，该第一目标信息用于指示：BSC设备发送反向散射信号的参数，或是否对第一信号进行联合信道估计；UE根据第一目标信息，确定是否对第一信号进行联合信道估计；其中，上述反向散射信号是：BSC设备对第一信号进行调制得到的。

Description

信道估计方法、装置、终端、网络侧设备及介质
本申请要求于2021年12月27日提交国家知识产权局、申请号为202111619639.4、申请名称为“信道估计方法、装置、终端、网络侧设备及介质”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请属于通信技术领域，具体涉及一种信道估计方法、装置、终端、网络侧设备及介质。
背景技术
目前，在反向散射通信(BackScatter Communication，BSC)中，BSC设备可以对其他设备发送的射频信号进行调制，生成该射频信号关联的反向散射信号，该反向散射信号上承载该BSC设备的数据信息；从而接收设备可以对该反向散射信号进行解调，以得到该数据信息。
但是，由于该射频信号可能是面向用户设备(User Equipment，UE)发送的，此时，可能会出现UE对该射频信号进行的信道估计，受到该射频信号关联的反向散射信号的影响的情况，因此，可能会影响该信道估计的性能。如此，降低了UE对射频信号进行解调的性能。
发明内容
本申请实施例提供一种信道估计方法、装置、终端、网络侧设备及介质，能够解决UE对射频信号进行解调的性能较低的问题。
第一方面，提供了一种信道估计方法，应用于UE，该方法包括：UE从通信设备接收第一目标信息，该第一目标信息用于指示：BSC设备发送反向散射信号的参数，或是否对第一信号进行联合信道估计；UE根据第一目标信息，确定是否对第一信号进行联合信道估计；其中，上述反向散射信号是：BSC设备对第一信号进行调制得到的。
第二方面，提供了一种信道估计装置，该信道估计装置为第一信道估计装置，该第一信道估计装置包括：接收模块和确定模块。其中，接收模块，用于从第二信道估计装置接收第一目标信息，该第一目标信息用于指示：BSC设备发送反向散射信号的参数，或是否对第一信号进行联合信道估计。确定模块，用于根据接收模块接收的第一目标信息，确定是否对第一信号进行联合信道估计；其中，上述反向散射信号是：BSC设备对第一信号进行调制得到的。
第三方面，提供了一种信道估计方法，应用于通信设备，该方法包括：通信设备向UE发送第一目标信息，该第一目标信息用于指示：BSC设备发送反向散射信号的参数，或是否对第一信号进行联合信道估计。其中，上述反向散射信号是：BSC设备对第一信号进行调制得到的；上述第一目标信息，用于UE确定是否对第一信号进行联合信道估计。
第四方面，提供了一种信道估计装置，该信道估计装置为第二信道估计装置，该第二信道估计装置包括：发送模块。其中，发送模块，用于向第一信道估计装置发送第一目标信息，该第一目标信息用于指示：BSC设备发送反向散射信号的参数，或是否对第一信号进行联合信道估计。其中，上述反向散射信号是：BSC设备对第一信号进行调制得到的；上述第一目标信息，用于UE确定是否对第一信号进行联合信道估计。
第五方面，提供了一种终端，该终端包括处理器和存储器，所述存储器存储可在所述处理器上运行的程序或指令，所述程序或指令被所述处理器执行时实现如第一方面所述的方法的步骤，或实现如第三方面所述的方法的步骤。
第六方面，提供了一种终端，包括处理器及通信接口，其中，该通信接口，用于从通信设备接收第一目标信息，该第一目标信息用于指示：BSC设备发送反向散射信号的参数，或是否对第一信号进行联合信道估计。该处理器，用于根据第一目标信息，确定是否对第一信号进行联合信道估计；其中，上述反向散射信号是：BSC设备对第一信号进行调制得到的。
第七方面，提供了一种网络侧设备，该网络侧设备包括处理器和存储器，所述存储器存储可在所述处理器上运行的程序或指令，所述程序或指令被所述处理器执行时实现如第三方面所述的方法的步骤。
第八方面，提供了一种网络侧设备，包括处理器及通信接口，其中，该通信接口， 用于向UE发送第一目标信息，该第一目标信息用于指示：BSC设备发送反向散射信号的参数，或是否对第一信号进行联合信道估计。其中，上述反向散射信号是：BSC设备对第一信号进行调制得到的；上述第一目标信息，用于UE确定是否对第一信号进行联合信道估计。
第九方面，提供了一种信道估计系统，包括：终端及网络侧设备，所述终端可用于执行如第一方面所述的方法的步骤，所述网络侧设备可用于执行如第三方面所述的方法的步骤。
第十方面，提供了一种可读存储介质，所述可读存储介质上存储程序或指令，所述程序或指令被处理器执行时实现如第一方面所述的方法的步骤，或者实现如第三方面所述的方法的步骤。
第十一方面，提供了一种芯片，所述芯片包括处理器和通信接口，所述通信接口和所述处理器耦合，所述处理器用于运行程序或指令，实现如第一方面所述的方法，或实现如第三方面所述的方法的步骤。
第十二方面，提供了一种计算机程序/程序产品，所述计算机程序/程序产品被存储在存储介质中，所述计算机程序/程序产品被至少一个处理器执行以实现如第一方面所述的方法的步骤，或实现如第三方面所述的方法的步骤。
在本申请实施例中，UE可以从通信设备接收用于指示BSC设备发送反向散射信号的参数(或是否对第一信号进行联合信道估计)的第一目标信息，该反向散射信号是BSC设备对第一信号进行调制得到的，从而UE可以根据该第一目标信息，确定是否对第一信号进行联合信道估计。由于UE可以根据通信设备指示的BSC设备发送反向散射信号的参数(或是否对第一信号进行联合信道估计)，确定是否对第一信号进行联合信道估计，而不是直接对第一信号进行联合信道估计，因此，可以避免UE对第一信号进行的联合信道估计，受到该第一信号关联的反向散射信号的影响，从而可以避免影响信道估计的性能，如此，可以提高UE对射频信号进行解调的性能。
附图说明
图1是本申请实施例提供的一种无线通信系统的框图之一；
图2是本申请实施例提供的一种无线通信系统的框图之二；
图3是BSC设备的每比特的发送时长与射频信号的时隙/子帧的长度的关系示意图之一；
图4是BSC设备的每比特的发送时长与射频信号的时隙/子帧的长度的关系示意图之二；
图5是BSC设备的每比特的发送时长与射频信号的时隙/子帧的长度的关系示意图之三；
图6是本申请实施例提供的信道估计方法的流程示意图之一；
图7是本申请实施例提供的信道估计方法的流程示意图之二；
图8是本申请实施例提供的信道估计方法的流程示意图之三；
图9是本申请实施例提供的信道估计方法的流程示意图之四；
图10为本申请实施例提供的信道估计装置的结构示意图之一；
图11为本申请实施例提供的信道估计装置的结构示意图之二；
图12是本申请实施例提供的通信设备的结构示意图；
图13是本申请实施例提供的终端的硬件结构示意图；
图14是本申请实施例提供的网络侧设备的硬件结构示意图。
具体实施方式
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚描述，显然，所描述的实施例是本申请一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员所获得的所有其他实施例，都属于本申请保护的范围。
以下将对本申请实施例涉及的术语进行说明。
1、BSC
BSC，是指BSC设备通过其他设备(例如UE、网络侧设备等)或环境中的射频信号进行调制，在该射频信号上承载BSC设备的数据信息的过程。
其中，BSC设备可以通过调节其内部阻抗，以控制BSC设备的电路的反射系数，从而改变射频信号的幅度、频率、相位等，以实现射频信号的调制。
BSC设备可以是无线射频识别(Radio Frequency Identification，RFID)系统中的标签(Tag)，或者无源(Passive)物联网(Internet ofThings，IOT)单元，或者有源(Semi-Passive)IOT单元，或者智能超表面中的可重配智能表面(Reconfigurable Intelligent meta-Surface，RIS)单元等。
2、反向散射信号
BSC设备在对射频信号进行调制之后生成的信号，即为该射频信号关联的反向散射信号。
3、其他术语
本申请的说明书和权利要求书中的术语“第一”、“第二”等是用于区别类似的对象，而不用于描述特定的顺序或先后次序。应该理解这样使用的术语在适当情况下可以互换，以便本申请的实施例能够以除了在这里图示或描述的那些以外的顺序实施，且“第一”、“第二”所区别的对象通常为一类，并不限定对象的个数，例如第一目标信息可以是一个，也可以是多个。此外，说明书以及权利要求中“和/或”表示所连接对象的至少其中之一，字符“/”一般表示前后关联对象是一种“或”的关系。
值得指出的是，本申请实施例所描述的技术不限于长期演进型(Long Term Evolution，LTE)/LTE的演进(LTE-Advanced，LTE-A)系统，还可用于其他无线通信系统，诸如码分多址(Code Division Multiple Access，CDMA)、时分多址(Time Division Multiple Access，TDMA)、频分多址(Frequency Division Multiple Access，FDMA)、正交频分多址(Orthogonal Frequency Division Multiple Access，OFDMA)、单载波频分多址(Single-carrier Frequency Division Multiple Access，SC-FDMA)和其他系统。本申请实施例中的术语“系统”和“网络”常被可互换地使用，所描述的技术既可用于以上提及的系统和无线电技术，也可用于其他系统和无线电技术。以下描述出于示例目的描述了新空口(New Radio，NR)系统，并且在以下大部分描述中使用NR术语，但是这些技术也可应用于NR系统应用以外的应用，如第6代(6th Generation，6G)通信系统。
图1示出本申请实施例可应用的一种无线通信系统的框图。无线通信系统包括终端11和网络侧设备12。其中，终端11可以是手机、平板电脑(Tablet Personal Computer)、膝上型电脑(Laptop Computer)或称为笔记本电脑、个人数字助理(Personal Digital Assistant，PDA)、掌上电脑、上网本、超级移动个人计算机(ultra-mobile personal computer，UMPC)、移动上网装置(Mobile Internet Device，MID)、增强现实(augmented reality，AR)/虚拟现实(virtual reality，VR)设备、机器人、可穿戴式设备(Wearable Device)、车载设备(VUE)、行人终端(PUE)、智能家居(具有无线通信功能的家居设备，如冰箱、电视、洗衣机或者家具等)、游戏机、个人计算机(personal computer，PC)、柜员机或者自助机等终端侧设备，可穿戴式设备包括：智能手表、智能手环、智能耳机、智能眼镜、智能首饰(智能手镯、智能手链、智能戒指、智能项链、智能脚镯、智能脚链等)、智能腕带、智能服装等。需要说明的是，在本申请实施例并不限定终端11的具体类型。网络侧设备12可以包括接入网设备或核心网设备，其中，接入网设备也可以称为无线接入网设备、无线接入网(Radio Access Network，RAN)、无线接入网功能或无线接入网单元。接入网设备可以包括基站、WLAN接入点或WiFi节点等，基站可被称为节点B、演进节点B(eNB)、接入点、基收发机站(Base Transceiver Station，BTS)、无线电基站、无线电收发机、基本服务集(Basic Service Set，BSS)、扩展服务集(Extended Service Set，ESS)、家用B节点、家用演进型B节点、发送接收点(Transmitting Receiving Point，TRP)或所述领域中其他某个合适的术语，只要达到相同的技术效果，所述基站不限于特定技术词汇，需要说明的是，在本申请实施例中仅以NR系统中的基站为例进行介绍，并不限定基站的具体类型。
下面结合附图，通过一些实施例及其应用场景对本申请实施例提供的信道估计方法、装置、终端、网络侧设备及介质进行详细地说明。
本申请实施例提供的信道估计方法可以应用于BSC场景。
图2示出了本申请实施例可应用的一种无线通信系统的框图。无线通信系统包括UE21、UE22、BSC设备23和其他设备(例如网络侧设备24)。
如图2所示，假设网络侧设备24要向UE21发送数据信息，则网络侧设备24可以向UE21发送射频信号，该射频信号上承载网络侧设备24要发送的数据信息，以使得UE21可以接收网络侧设备24要发送的数据信息；并且，BSC设备23可以将BSC设备23要发送的数据信息调制在该射频信号上，生成该射频信号关联的反向散射信号，从而UE22可以接收BSC设备23要发送的数据信息。但是，由于可能会出现UE21对该射频信号进行的信道估计，受到该射频信号关联的反向散射信号的影响的情况，因此，可以能会影响该信道估计的性能。
以下将以三种示例，举例说明反向散射信号是如何影响UE的信道估计的性能的。
在一种示例中，如图3所示，假设BSC设备23的每比特的发送时长等于射频信号的一个时隙/子帧的长度，这样BSC设备23在发送0时会占用射频信号的一个时隙。根据例如基于FM0编码的振幅键控(Amplitude Shift Keying，ASK)调制的原理，在 BSC设备23发送0时，前半个时隙是高电平，后半个时隙是低电平；在发送1时，整个时隙都是高电平，因此，UE21在射频信号的一个时隙内做信道估计的插值时，会受到该射频信号关联的反向散射信号的影响，从而出现前半个时隙的参考信号和后半个时隙的参考信号的幅度不连续的问题，进而影响信道估计的性能。
在另一种示例中，如图4所示，假设BSC设备23的每比特的发送时长大于射频信号的一个时隙/子帧的长度，例如BSC设备23的每比特的发送时长是射频信号的两个时隙/子帧，这样BSC设备23在发送0会占用射频信号的两个时隙。根据例如基于FM0编码的ASK调制的原理，在BSC设备23发送0时，第一个时隙是高电平，第二个时隙是低电平，因此，UE21在射频信号的两个时隙内做联合信道估计时，会受到该射频信号关联的反向散射信号的影响，从而出现两个时隙交界处的参考信号的幅度不连续的问题，进而影响信道估计的性能。
在又一种示例中，如图5所示，假设BSC设备23的每比特的发送时长小于射频信号的一个时隙/子帧的长度，例如BSC设备23的每比特的发送时长是射频信号的两个符号，这样BSC设备23在发送0时占用射频信号的两个符号。根据例如基于FM0编码的ASK调制的原理，在BSC设备23发送0时，两个符号的电平不同；在发送1时，两个符号的电平相同；因此，UE21在射频信号的一个时隙内做联合信道估计时，会受到该射频信号关联的反向散射信号的影响，从而出现两个符号的参考信号的幅度不连续的问题，进而影响信道估计的性能。
综上，UE对射频信号进行的信道估计，会受到该射频信号关联的反向散射信号的影响，因此，可能会影响信道估计的性能。
然而，在本申请实施例中，UE21可以从通信设备(例如网络侧设备、其他UE、BSC设备等)接收指示信息，该指示信息用于指示BSC设备23发送反向散射信号的参数(或是否对射频信号进行联合信道估计)，从而UE21可以直接根据该指示信息，确定是否对射频信号进行联合信道估计，而不是直接对射频信号进行联合信道估计，因此，可以避免影响信道估计的性能。
图6示出了本申请实施例提供的一种信道估计方法的流程图。如图6所示，本申请实施例提供的信道估计方法可以包括下述的步骤101至步骤103。
步骤101、通信设备向UE发送第一目标信息。
步骤102、UE从通信设备接收第一目标信息。
本申请实施例中，上述第一目标信息用于指示：BSC设备发送反向散射信号的参数，或是否对第一信号进行联合信道估计；该反向散射信号是：BSC设备对第一信号进行调制得到的；该第一目标信息，用于UE确定是否对第一信号进行所述联合信道估计。
可选地，本申请实施例中，上述通信设备包括以下任一项：基站、BSC设备、其他UE。
进一步可选地，本申请实施例中，在通信设备为基站的情况下，该基站可以为以下任一项：其他UE、中继(relay)设备、设备对设备(Device to Device，D2D)设备、旁链路(sidelink)设备等。
进一步可选地，本申请实施例中，在通信设备为BSC设备的情况下，该BSC设备还可以为RIS设备；其中，该BSC设备的供能源和射频源(即第一信号)可以是同一个设备，也可以是不同的设备。
其中，BSC设备的供能方式可以包括以下至少一项：BSC设备通过基站射频信号供能、BSC设备通过其他射频信号供能、BSC设备通过非射频信号供能。该非射频信号供能可以包括：机械供能、震动供能、太阳供能、热能供能等的至少一种。
可选地，本申请实施例中，在通信设备为基站的情况下，基站可以通过下行控制信息(Downlink Control Information，DCI)，或前导码序列，或无线资源控制(Radio Resource Control，RRC)信令，或媒体接入控制(Media Access Control，MAC)控制元素(Control Element，CE)承载第一目标信息，以向UE发送第一目标信息。
可选地，本申请实施例中，在通信设备为BSC设备(或其他UE)的情况下，BSC设备(或其他UE)可以通过两步直连控制信息(Sidelink Control Information，SCI)，或前导码序列承载第一目标信息，以向UE发送第一目标信息。
可选地，本申请实施例中，上述第一信号可以为通信设备发送给UE的信号，或者数据等。此时，第一目标信息可以承载在第一信号的调度信令(例如DCI)中。
可选地，本申请实施例中，在第一目标信息用于指示BSC设备发送反向散射信号的参数的情况下，该参数可以包括以下至少一项：时域参数、频域参数等；该参数具体可以为BSC设备向通信设备发送的。可以理解，在BSC设备发送反向散射信号之前，BSC设备可以上报该参数至通信设备。
可选地，本申请实施例中，在第一目标信息用于指示是否对第一信号进行联合信道估计的情况下，该第一目标信息是通信设备根据BSC设备发送反向散射信号的参数确定的；其中，该参数具体可以为BSC设备向通信设备发送的。
以下将针对第一目标信息进行举例说明。
可选地，在本申请实施例的一种可能的实现方式中，上述第一目标信息用于指示：BSC设备发送反向散射信号的参数；该BSC设备发送反向散射信号的参数包括以下至少一项：
目标时间信息，该目标时间信息用于指示：BSC设备发送反向散射信号的时间信息；
反向散射信号的至少一个周期长度；
反向散射信号的符号长度；
反向散射信号的传输时长；
反向散射信号的调制方式；
反向散射信号的编码方式；
反向散射信号的分界符的长度；
分界符的时间偏移量；
反向散射信号的前导码的长度；
前导码的时间偏移量；
BSC设备的同步相关的信息；
BSC设备对第一信号进行移频的相关信息；
目标时长。
可选地，本申请实施例中，上述目标时间信息具体用于指示：BSC设备发送反向散射信号的可能时间段。
可选地，本申请实施例中，上述目标时间信息包括以下任一项：
第一时间信息，该第一时间信息包括：非周期性传输模式信息和非周期性传输的时间信息中的至少一项；
第二时间信息，该第二时间信息包括：周期性传输模式信息、传输周期以及周期性传输的时间信息中的至少一项。
其中，非周期性传输的时间信息具体可以为：非周期性传输的可能时间段。例如一天中的早上4点至5点等。
传输周期具体可以为：一个传输周期的时长(例如10毫秒(ms)的传输周期)、一个周期内包括反向散射信号的信号传输时间(例如5ms)和不传输信号的时间(例如5ms)。其中，在BSC设备不传输信号的时间内，BSC设备可以执行能量收集。
周期性传输的时间信息具体可以为：周期性传输的可能时间段。例如哪些周期可能传输信息。
可选地，本申请实施例中，上述反向散射信号的至少一个周期长度中的每个周期长度可以为：子帧或时隙的长度、一个子帧或时隙包含的符号的个数等的至少一个。
可选地，本申请实施例中，上述反向散射信号的符号长度可以为：BSC设备发送0或者1所占用的时间长度。例如，发送0或者1占用一个子帧或时隙。
可选地，本申请实施例中，上述反向散射信号的传输时长具体可以为：反向散射信号的传输经历的周期长度。可以理解，UE需要缓存该传输时长的反向散射信号后才能进行解调。
可选地，本申请实施例中，上述反向散射信号的调制方式可以为：基于FM0编码的调制方式。
可选地，本申请实施例中，上述反向散射信号的编码方式可以为：米勒(Miller)编码、曼彻斯特编码，FM0编码等。其中，编码方式决定一个符号内的高低电平转换的最小时间颗粒度。
本申请实施例中，上述分界符用于指示：反向散射信号的起始时刻；上述前导码用于反向散射信号的接收设备进行同步或信道估计。
可选地，本申请实施例中，上述BSC设备的同步相关的信息包括以下至少一项：
反向散射信号的符号或时隙的起始时刻；
BSC设备的定时与目标定时之间的偏差信息，该目标定时包括以下任一项：第一信号的定时、通信设备的定时。
进一步可选地，本申请实施例中，上述反向散射信号的符号或时隙的起始时刻具体可以为：绝对时刻、或相对时刻。
示例性地，假设起始时刻为T1，在该起始时刻为绝对时刻的情况下，反向散射信号的符号或时隙的起始时刻即为T1。
在该起始时刻为相对时刻的情况下，反向散射信号的符号或时隙的起始时刻可以为：目标时刻的T1之前(或之后)的时刻；其中，目标时刻可以为第一信号的符号或时隙的起始时刻。
可选地，本申请实施例中，上述BSC设备对第一信号进行移频的相关信息包括以下至少一项：
是否支持频移；
频点搬移后的中心频点；
频点搬移后的带宽。
本申请实施例中，上述目标时长为：反向散射信号的幅度和相位不变的最小时长。
可选地，本申请实施例中，上述反向散射信号的幅度和相位不变的最小时长具体可以为：绝对值，或者时间单元长度。其中，时间单元可以为以下任一项：时隙、子帧、符号、微时隙、迷你时隙等。
示例性地，反向散射信号的幅度和相位不变的最小时长可以为1ms，或者至少两个第一信号的符号长度，或者至少两个第一信号的子帧或时隙长度。
可选地，在本申请实施例的另一种可能的实现方式中，上述第一目标信息用于指示：是否对第一信号进行联合信道估计；该第一目标信息包括以下至少一项：
第一指示信息，该第一指示信息用于指示：UE不对第一信号进行M个时间单元内的联合信道估计；
第二指示信息，该第二指示信息用于指示：UE对第一信号进行M个时间单元内的联合信道估计；
第三指示信息，该第三指示信息用于指示：UE不对第一信号进行T个符号的联合信道估计；
第四指示信息，该第四指示信息用于指示：UE对第一信号进行T个符号的联合信道估计；
第五指示信息，该第五指示信息用于指示：UE对第一信号进行R个时间单元内的联合信道估计。
本申请实施例中，上述T个符号为同一个时间单元中的符号，M、T均为大于1的正整数，R为大于0、且小于1的小数。
进一步可选地，本申请实施例中，R具体可以为大于0.5、且小于1的小数。例如，R可以为0.6，或0.75等。
本申请实施例中，在通信设备中可以预配置BSC设备发送反向散射信号的参数，或者通信设备可以预先从其他设备(例如BSC设备、其他UE等)获取BSC设备发送反向散射信号的参数，从而通信设备可以根据该参数，向UE发送第一目标信息。以下将举例说明，通信设备是如何获取反向散射信号的参数的：
可选地，本申请实施例中，结合图6，如图7所示，在上述步骤101之前，本申请实施例提供的信道估计方法还可以包括下述的步骤201。
步骤201、通信设备从第一设备接收第二目标信息。
本申请实施例中，上述第二目标信息用于指示：BSC设备发送反向散射信号的参数；上述第一目标信息是根据第二目标信息确定的；上述第一设备包括以下任一项：所述BSC设备、其他UE。
本申请实施例中，第一目标信息是：通信设备根据第二目标信息确定的。可以理解，第二目标信息指示的内容，是第一目标信息指示的内容的子集或全集。
进一步可选地，本申请实施例中，在通信设备与第一设备建立连接的情况下，通信设备可以从第一设备接收第二目标信息。
其中，在第一设备包括其他UE的情况下，BSC设备发送反向散射信号的参数为：BSC设备在其发送信号之前，向其他UE上报的。
进一步可选地，本申请实施例中，通信设备具体可以为基站。
本申请实施例中，由于BSC设备发送的反向散射信号可能会影响UE进行信道估计的性能，因此，通信设备可以从BSC设备(或其他UE)接收BSC设备发送反向散射信号的参数。
如此可知，由于通信设备可以直接从BSC设备(或其他UE)接收BSC设备发送反向散射信号的参数，这样通信设备可以准确地确定反向散射信号的参数，或者准确地确定UE是否对第一信号进行联合信道估计，以使得UE可以准确地确定是否对第一信号进行联合信道估计，因此，可以避免影响UE进行信道估计的性能。
可选地，本申请实施例中，在上述步骤201之前，本申请实施例提供的信道估计方法还可以包括下述的步骤301。
步骤301、通信设备向第一设备发送第五请求消息。
本申请实施例中，上述第五请求消息用于请求：BSC设备发送反向散射信号的参数。
进一步可选地，本申请实施例中，在通信设备与第一设备建立连接的情况下，通信设备可以向第一设备发送第五请求消息。
如此可知，由于通信设备可以直接向第一设备请求BSC设备发送反向散射信号的参数，因此，可以避免BSC设备(或其他UE)因网络质量问题，而不能向通信设备发送该参数的情况，如此，可以避免通信设备无法获取该参数的情况。
步骤103、UE根据第一目标信息，确定是否对第一信号进行联合信道估计。
可选地，本申请实施例中，在UE确定是否对第一信号进行联合信道估计之后，若UE确定对第一信号进行联合信道估计，则UE还可以根据第一目标信息，确定进行联合信道估计的方式，以对第一信号进行该方式的联合信道估计。
需要说明的是，本申请实施例(包括所有实施例)中的联合信道估计，主要指信道估计中的插值，包括时域插值。例如，通过估计两个不同时刻的参考信号资源元素(Resource element，RE)上的信道响应或者信道状态信息，得到该两个时刻的其他RE或者其他时刻的RE上的信道响应或者信道状态信息。
针对联合信道估计的说明，可以参考相关技术中的具体描述，本申请实施例对此不予赘述。
以下将以两个不同的示例，具体进行举例说明。
示例一，第一目标信息用于指示：BSC设备发送反向散射信号的参数：
可选地，本申请实施例中，上述第一目标信息包括：所述目标时长。具体地，上述步骤103具体可以通过下述的步骤103a实现。
步骤103a、在BSC设备发送反向散射信号的目标时频资源与第一信号的时频资源重叠的情况下，UE确定在目标时长内进行联合信道估计。
本申请实施例中，上述目标时频资源是：根据第一目标信息确定的。
进一步可选地，本申请实施例中，目标时频资源可以包括：第一时域资源和第一频域资源。其中，第一时域资源用于指示BSC设备发送反向散射信号的可能时间段。
需要说明的是，上述“目标时频资源与第一信号的时频资源重叠”可以理解为：全部重叠或部分重叠，本申请实施例对此不作限定。
可以理解，在BSC设备发送反向散射信号的可能时间段与第一信号的时域资源重叠、且BSC设备发送反向散射信号的第一频域资源与第一信号的频域资源重叠的情况下，UE确定进行联合信道估计。
本申请实施例中，若BSC设备发送反向散射信号的目标时频资源与第一信号的时频资源重叠，则可以认为在对第一信号进行联合信道估计时，可能会出现信号的幅度不连续的问题，因此，UE会在反向散射信号的幅度和相位不变的最小时长内进行联合信道估计，以避免对该联合信道估计受到反向散射信号的影响，进而避免信号的幅度不连续的问题。
如此可知，由于在BSC设备发送反向散射信号的目标时频资源与第一信号的时频资源重叠的情况下，UE可以在目标时长内进行联合信道估计，因此可以避免信号的幅度不连续的问题，如此可以避免影响信道估计的性能。
可选地，本申请实施例中，上述步骤103a具体可以通过下述的步骤103a1实现。
步骤103a1、在BSC设备发送反向散射信号的目标时频资源与第一信号的时频资源重叠的情况下，在目标时长大于或等于第一信号的N个时间单元的长度的情况下，UE确定在目标时长内进行N个时间单元内的联合信道估计。
本申请实施例中，N为正整数。
进一步可选地，本申请实施例中，N具体可以为1。
进一步可选地，本申请实施例中，上述时间单元具体可以为：时隙或子帧。
本申请实施例中，若目标时长大于或等于第一信号的N个时间单元的长度，则可以认为在N个时间单元的长度内，反向散射信号的幅度和相位是不变的，即N个时间单元内，对第一信号进行的联合信道估计，不受反向散射信号的影响，因此，UE可以进行N个时间单元内的联合信道估计。
可以理解，UE可以根据目标时长与第一信号的时间单元的长度，确定进行联合信道估计的方式。
可选地，本申请实施例中，上述步骤103a1还可以替换为下述的步骤103a2。
步骤103a2、在BSC设备发送反向散射信号的目标时频资源与第一信号的时频资源重叠的情况下，在目标时长小于第一信号的N个时间单元的长度的情况下，UE确定在目标时长内不进行N个时间单元内的联合信道估计。
进一步可选地，本申请实施例中，在目标时长小于第一信号的N个时间单元的长 度、且大于或等于第一信号的X个时间单元的长度的情况下，UE可以确定在目标时长内进行X个时间单元内的联合信道估计，X为小于N的正整数。
本申请实施例中，若目标时长小于第一信号的N个时间单元的长度，则可以认为在N个时间单元的长度内，反向散射信号的幅度和相位是可能发生改变的，即N个时间单元内，对第一信号进行的联合信道估计，可能会受到反向散射信号的影响，因此，UE可以不进行N个时间单元内的联合信道估计。
可选地，本申请实施例中，在BSC设备发送反向散射信号的目标时频资源与第一信号的时频资源不重叠的情况下，UE确定对第一信号进行联合信道估计。
本申请实施例中，若BSC设备发送反向散射信号的目标时频资源与第一信号的时频资源不重叠，则可以认为该反向散射信号并不会影响对第一信号进行的联合信道估计的性能，因此，UE可以直接对第一信号进行联合信道估计。
示例二，第一目标信息用于指示：是否对第一信号进行联合信道估计：
可选地，本申请实施例中，上述步骤103具体可以通过下述的步骤103b或步骤103c或步骤103d或步骤103e或步骤103f实现。
步骤103b、在第一目标信息包括第一指示信息的情况下，UE确定不对第一信号进行M个时间单元内的联合信道估计。
步骤103c、在第一目标信息包括第二指示信息的情况下，UE确定对第一信号进行M个时间单元内的联合信道估计。
步骤103d、在第一目标信息包括第三指示信息的情况下，UE确定不对第一信号进行T个符号的联合信道估计。
步骤103e、在第一目标信息包括第四指示信息的情况下，UE确定对第一信号进行T个符号的联合信道估计。
步骤103f、在第一目标信息包括第五指示信息的情况下，UE确定对第一信号进行R个时间单元内的联合信道估计。
可以理解，UE可以对第一信号进行第一目标信息指示的方式的联合信道估计，或不进行第一目标信息指示的方式的联合信道估计。
本申请实施例提供的信道估计方法，UE可以从通信设备接收用于指示BSC设备发送反向散射信号的参数(或是否对第一信号进行联合信道估计)的第一目标信息，该反向散射信号是BSC设备对第一信号进行调制得到的，从而UE可以根据该第一目标信息，确定是否对第一信号进行联合信道估计。由于UE可以根据通信设备指示的BSC设备发送反向散射信号的参数(或是否对第一信号进行联合信道估计)，确定是否对第一信号进行联合信道估计，而不是直接对第一信号进行联合信道估计，因此，可以避免UE对第一信号进行的联合信道估计，受到该第一信号关联的反向散射信号的影响，从而可以避免影响信道估计的性能，如此，可以提高UE对射频信号进行解调的性能。
本申请实施例中，UE可以在多种不同的情况下，从通信设备接收第一目标信息，具体如下：
情况一、
UE可以在与通信设备建立连接的情况下，直接从通信设备接收第一目标信息。
情况二、
UE可以向通信设备发送请求，以使得通信设备可以向UE发送第一目标信息，以下将以第一目标信息用于指示BSC设备发送反向散射信号的参数为例，举例说明：
可选地，本申请实施例中，结合图6，如图8所示，在上述步骤101之前，本申请实施例提供的信道估计方法还可以包括下述的步骤401和步骤402。
步骤401、UE向通信设备发送第一请求消息。
步骤402、通信设备从UE接收第一请求消息。
本申请实施例中，上述第一请求消息用于请求：BSC设备发送反向散射信号的参数。
可以理解，通信设备可以根据第一请求消息，直接向UE发送第一目标信息。
可选地，本申请实施例中，在上述步骤401之前，本申请实施例提供的信道估计方法还可以包括下述的步骤501。
步骤501、在UE确定接收的信号关联反向散射信号的情况下，UE向通信设备发送第一请求消息。
进一步可选地，本申请实施例中，UE可以对接收到的信号进行检测，以确定该信号的幅度在不同时间单元(例如不同时隙)是否出现周期性的不连续(例如周期性的跳变)的情况，以确定该信号是否关联了反向散射信号。如果该信号的幅度在不同时间单元(例如不同时隙)出现周期性的不连续(例如周期性的跳变)的情况，则可以 确定该信号关联了反向散射信号，即：BSC设备将自身的信息调制在该信号上。
本申请实施例中，若UE确定接收的信号关联反向散射信号，则可以认为对第一信号进行的联合信道估计，可能会受到该第一信号关联的反向散射信号的影响，以影响UE进行信道估计的性能，因此，UE可以向通信设备请求BSC设备发送反向散射信号的参数。
需要说明的是，针对第一目标信息用于指示是否对第一信号进行联合信道估计的情况，可以参考上述实施例中的描述，本申请实施例在此不再赘述。
情况三、
UE可以根据通信设备的请求，检测UE是否满足预设条件(例如该UE接收的信号是否关联了反向散射信号接收的信号关联反向散射信号)，并在确定该UE接收的信号关联了反向散射信号接收的信号关联反向散射信号的情况下，UE可以向通信设备发送请求，以使得通信设备可以向UE发送第一目标信息，以下将以第一目标信息用于指示BSC设备发送反向散射信号的参数为例，举例说明：
可选地，本申请实施例中，结合图6，如图9所示，在上述步骤101之前，本申请实施例提供的信道估计方法还可以包括下述的步骤601至步骤603，并且上述步骤101具体可以通过下述的步骤101a实现。
步骤601、通信设备向UE发送第二请求消息。
步骤602、UE从通信设备接收第二请求消息。
本申请实施例中，上述第二请求消息用于请求：UE确定接收的信号是否关联反向散射信号。
需要说明的是，针对UE确定接收的信号是否关联反向散射信号的说明，可以参考上述实施例中的具体描述，本申请实施例在此不再赘述。
可选地，本申请实施例中，上述第二请求消息包括以下至少一项：
第三请求消息，该第三请求消息用于请求：UE确定是否在目标资源上接收的信号关联反向散射信号，该目标资源包括以下至少一项：目标时域资源和目标频域资源；
第四请求消息，该第四请求消息用于请求：UE确定是否接收到目标序列信息，该目标序列信息与BSC设备的标识相关联，或与反向散射信号的加扰序列相关。
进一步可选地，本申请实施例中，上述BSC设备的标识具体可以为：BSC设备的设备数字标识(Identity Document，ID)。
步骤603、在UE确定接收的信号关联反向散射信号的情况下，UE向通信设备发送第一反馈消息。
本申请实施例中，上述第一反馈消息用于指示：UE接收的信号关联反向散射信号。
本申请实施例中，上述第一目标信息是：通信设备在接收到第一反馈消息的情况下发送的。
步骤101a、在通信设备从UE接收到第一反馈消息的情况下，向UE发送第一目标信息。
需要说明的是，针对第一目标信息用于指示是否对第一信号进行联合信道估计的情况，可以参考上述实施例中的描述，本申请实施例在此不再赘述。
如此可知，由于UE可以根据通信设备的请求，确定UE接收的信号是否关联反向散射信号，从而在UE确定接收的信号关联反向散射信号的情况下，通信设备才向UE发送第一目标信息，以使得UE可以确定是否进行联合信道估计，因此，可以降低UE的功耗。
本申请实施例提供的信道估计方法，执行主体可以为UE(或通信设备)。本申请实施例中以UE(或通信设备)执行信道估计方法为例，说明本申请实施例提供的信道估计方法的。
图10示出了本申请实施例中涉及的信道估计装置的一种可能的结构示意图，该信道估计装置为第一信道估计装置。如图10所示，第一信道估计装置60可以包括：接收模块61和确定模块62。
其中，接收模块61，用于从第二信道估计装置接收第一目标信息，该第一目标信息用于指示：BSC设备发送反向散射信号的参数，或是否对第一信号进行联合信道估计。确定模块62，用于根据接收模块61接收的第一目标信息，确定是否对第一信号进行联合信道估计。其中，上述反向散射信号是：BSC设备对第一信号进行调制得到的。
在一种可能的实现方式中，上述第一目标信息用于指示：BSC设备发送反向散射信号的参数；上述BSC设备发送反向散射信号的参数包括以下至少一项：目标时间信息，该目标时间信息用于指示：BSC设备发送反向散射信号的时间信息；反向散射信号的至少一个周期长度；反向散射信号的符号长度；反向散射信号的传输时长；反向 散射信号的调制方式；反向散射信号的编码方式；反向散射信号的分界符的长度；分界符的时间偏移量；反向散射信号的前导码的长度；前导码的时间偏移量；BSC设备的同步相关的信息；BSC设备对第一信号进行移频的相关信息；目标时长。其中，上述分界符用于指示：反向散射信号的起始时刻；上述目标时长为：反向散射信号的幅度和相位不变的最小时长。
在一种可能的实现方式中，上述目标时间信息包括以下任一项：第一时间信息，该第一时间信息包括：非周期性传输模式信息和非周期性传输的时间信息中的至少一项；第二时间信息，该第二时间信息包括：周期性传输模式信息、传输周期以及周期性传输的时间信息中的至少一项。
在一种可能的实现方式中，上述BSC设备的同步相关的信息包括以下至少一项：反向散射信号的符号或时隙的起始时刻；BSC设备的定时与目标定时之间的偏差信息，该目标定时包括以下任一项：第一信号的定时、第二信道估计装置的定时。
在一种可能的实现方式中，上述BSC设备对第一信号进行移频的相关信息包括以下至少一项：是否支持频移；频点搬移后的中心频点；频点搬移后的带宽。
在一种可能的实现方式中，上述第一目标信息包括：目标时长；上述确定模块62，具体用于在BSC设备发送反向散射信号的目标时频资源与第一信号的时频资源重叠的情况下，确定在目标时长内进行联合信道估计。其中，上述目标时频资源是：根据第一目标信息确定的。
在一种可能的实现方式中，上述确定模块62，具体用于在目标时长大于或等于第一信号的N个时间单元的长度的情况下，确定在目标时长内进行N个时间单元内的联合信道估计。上述确定模块62，还用于在目标时长小于第一信号的N个时间单元的长度的情况下，确定在目标时长内不进行N个时间单元内的联合信道估计。其中，N为正整数。
在一种可能的实现方式中，上述第一目标信息用于指示：是否对第一信号进行联合信道估计；上述第一目标信息包括以下至少一项：第一指示信息，该第一指示信息用于指示：第一信道估计装置60不对第一信号进行M个时间单元内的联合信道估计；第二指示信息，该第二指示信息用于指示：第一信道估计装置60对第一信号进行M个时间单元内的联合信道估计；第三指示信息，该第三指示信息用于指示：第一信道估计装置60不对第一信号进行T个符号的联合信道估计；第四指示信息，该第四指示信息用于指示：第一信道估计装置60对第一信号进行T个符号的联合信道估计；第五指示信息，该第五指示信息用于指示：第一信道估计装置60对第一信号进行R个时间单元内的联合信道估计。其中，上述T个符号为同一个时间单元中的符号，M、T均为大于1的正整数，R为大于0、且小于1的小数。
在一种可能的实现方式中，上述确定模块62，具体用于在第一目标信息包括第一指示信息的情况下，确定不对第一信号进行M个时间单元内的联合信道估计；或者，在第一目标信息包括第二指示信息的情况下，确定对第一信号进行M个时间单元内的联合信道估计；或者，在第一目标信息包括第三指示信息的情况下，确定不对第一信号进行T个符号的联合信道估计；或者，在第一目标信息包括第四指示信息的情况下，确定对第一信号进行T个符号的联合信道估计；或者，在第一目标信息包括第五指示信息的情况下，确定对第一信号进行R个时间单元内的联合信道估计。
在一种可能的实现方式中，上述第二信道估计装置包括以下任一项：基站、BSC设备、其他信道估计装置。
在一种可能的实现方式中，上述第一目标信息是：上述第二信道估计装置根据第二目标信息确定的。其中，上述第二目标信息用于指示：BSC设备发送反向散射信号的参数；该第二目标信息是：第一设备发送至第二信道估计装置的，该第一设备包括以下任一项：BSC设备、其他信道估计装置。
在一种可能的实现方式中，上述第一信道估计装置还包括：发送模块。其中，发送模块，用于向第二信道估计装置发送第一请求消息，该第一请求消息用于请求：BSC设备发送反向散射信号的参数。
在一种可能的实现方式中，上述发送模块，具体用于在第一信道估计装置60确定接收的信号关联反向散射信号的情况下，向第二信道估计装置发送第一请求消息。
在一种可能的实现方式中，上述接收模块61，还用于从第二信道估计装置接收第二请求消息，该第二请求消息用于请求：第一信道估计装置60确定接收的信号是否关联反向散射信号；并在第一信道估计装置60确定接收的信号关联反向散射信号的情况下，向第二信道估计装置发送第一反馈消息，该第一反馈消息用于指示：第一信道估计装置60接收的信号关联反向散射信号。其中，上述第一目标信息是：第二信道估计装置在接收到第一反馈消息的情况下发送的。
在一种可能的实现方式中，上述第二请求消息包括以下至少一项：第三请求消息，该第三请求消息用于请求：第一信道估计装置60确定是否在目标资源上接收的信号关联反向散射信号，该目标资源包括以下至少一项：目标时域资源和目标频域资源；第四请求消息，该第四请求消息用于请求：第一信道估计装置60确定是否接收到目标序列信息，该目标序列信息与BSC设备的标识相关联，或与反向散射信号的加扰序列相关。
本申请实施例提供的信道估计装置，该信道估计装置为第一信道估计装置，由于第一信道估计装置可以根据第二信道估计装置指示的BSC设备发送反向散射信号的参数(或是否对第一信号进行联合信道估计)，确定是否对第一信号进行联合信道估计，而不是直接对第一信号进行联合信道估计，因此，可以避免第一信道估计装置对第一信号进行的联合信道估计，受到该第一信号关联的反向散射信号的影响，从而可以避免影响信道估计的性能，如此，可以提高第一信道估计装置对射频信号进行解调的性能。
本申请实施例中的第一信道估计装置可以是电子设备，例如具有操作系统的电子设备，也可以是电子设备中的部件，例如集成电路或芯片。该电子设备可以是终端，也可以为除终端之外的其他设备。示例性地，终端可以包括但不限于上述所列举的终端11的类型，其他设备可以为服务器、网络附属存储器(Network Attached Storage，NAS)等，本申请实施例不作具体限定。
本申请实施例提供的第一信道估计装置能够实现图6至图9的方法实施例实现的各个过程，并达到相同的技术效果，为避免重复，这里不再赘述。
图11示出了本申请实施例中涉及的信道估计装置的一种可能的结构示意图，该信道估计装置为第二信道估计装置。如图11所示，第二信道估计装置70可以包括：发送模块71。
其中，发送模块71，用于向第一信道估计装置发送第一目标信息，该第一目标信息用于指示：BSC设备发送反向散射信号的参数，或是否对第一信号进行联合信道估计。其中，上述反向散射信号是：BSC设备对第一信号进行调制得到的；上述第一目标信息，用于第一信道估计装置确定是否对第一信号进行联合信道估计。
在一种可能的实现方式中，上述第二信道估计装置70还包括：接收模块。其中，接收模块，用于从第一设备接收第二目标信息。其中，上述第二目标信息用于指示：BSC设备发送反向散射信号的参数；上述第一目标信息是根据该第二目标信息确定的；该第一设备包括以下任一项：BSC设备、其他信道估计装置。
在一种可能的实现方式中，上述发送模块71，还用于向第一设备发送第五请求消息，该第五请求消息用于请求：BSC设备发送反向散射信号的参数。
在一种可能的实现方式中，上述发送模块71，还用于向第一信道估计装置发送第二请求消息，该第二请求消息用于请求：第一信道估计装置确定接收的信号是否关联反向散射信号。上述发送模块71，具体用于在第二信道估计装置70从第一信道估计装置接收到第一反馈消息的情况下，向第一信道估计装置发送第一目标信息。其中，上述第一反馈消息用于指示：第一信道估计装置接收的信号关联反向散射信号。
本申请实施例提供的信道估计装置，该信道估计装置为第二信道估计装置，由于第一信道估计装置可以根据第二信道估计装置指示的BSC设备发送反向散射信号的参数(或是否对第一信号进行联合信道估计)，确定是否对第一信号进行联合信道估计，而不是直接对第一信号进行联合信道估计，因此，可以避免第一信道估计装置对第一信号进行的联合信道估计，受到该第一信号关联的反向散射信号的影响，从而可以避免影响信道估计的性能，如此，可以提高第一信道估计装置对射频信号进行解调的性能。
本申请实施例中的第二信道估计装置可以是电子设备，例如具有操作系统的电子设备，也可以是电子设备中的部件，例如集成电路或芯片。该电子设备可以是终端，也可以为除终端之外的其他设备。示例性地，终端可以包括但不限于上述所列举的终端11的类型，其他设备可以为服务器、网络附属存储器(Network Attached Storage，NAS)等，本申请实施例不作具体限定。
本申请实施例提供的第二信道估计装置能够实现图6至图9的方法实施例实现的各个过程，并达到相同的技术效果，为避免重复，这里不再赘述。
可选地，本申请实施例中，如图12所示，本申请实施例还提供一种通信设备80，包括处理器81和存储器82，存储器82上存储有可在所述处理器81上运行的程序或指令，例如，该通信设备80为终端时，该程序或指令被处理器81执行时实现上述信道估计方法实施例的各个步骤，且能达到相同的技术效果。该通信设备80为网络侧设备时，该程序或指令被处理器81执行时实现上述信道估计方法实施例的各个步骤，且 能达到相同的技术效果，为避免重复，这里不再赘述。
本申请实施例还提供一种终端，包括处理器和通信接口，该通信接口，用于从通信设备接收第一目标信息，该第一目标信息用于指示：BSC设备发送反向散射信号的参数，或是否对第一信号进行联合信道估计；该处理器，用于根据第一目标信息，确定是否对第一信号进行联合信道估计。其中，上述反向散射信号是：BSC设备对第一信号进行调制得到的。该终端实施例与上述终端侧方法实施例对应，上述方法实施例的各个实施过程和实现方式均可适用于该终端实施例中，且能达到相同的技术效果。具体地，图13为实现本申请实施例的一种终端的硬件结构示意图。
该终端100包括但不限于：射频单元101、网络模块102、音频输出单元103、输入单元104、传感器105、显示单元106、用户输入单元107、接口单元108、存储器109以及处理器110等中的至少部分部件。
本领域技术人员可以理解，终端100还可以包括给各个部件供电的电源(比如电池)，电源可以通过电源管理系统与处理器110逻辑相连，从而通过电源管理系统实现管理充电、放电、以及功耗管理等功能。图13中示出的终端结构并不构成对终端的限定，终端可以包括比图示更多或更少的部件，或者组合某些部件，或者不同的部件布置，在此不再赘述。
应理解的是，本申请实施例中，输入单元104可以包括图形处理单元(Graphics Processing Unit，GPU)1041和麦克风1042，图形处理器1041对在视频捕获模式或图像捕获模式中由图像捕获装置(如摄像头)获得的静态图片或视频的图像数据进行处理。显示单元106可包括显示面板1061，可以采用液晶显示器、有机发光二极管等形式来配置显示面板1061。用户输入单元107包括触控面板1071以及其他输入设备1072中的至少一种。触控面板1071，也称为触摸屏。触控面板1071可包括触摸检测装置和触摸控制器两个部分。其他输入设备1072可以包括但不限于物理键盘、功能键(比如音量控制按键、开关按键等)、轨迹球、鼠标、操作杆，在此不再赘述。
本申请实施例中，射频单元101接收来自网络侧设备的下行数据后，可以传输给处理器110进行处理；另外，射频单元101可以向网络侧设备发送上行数据。通常，射频单元101包括但不限于天线、放大器、收发信机、耦合器、低噪声放大器、双工器等。
存储器109可用于存储软件程序或指令以及各种数据。存储器109可主要包括存储程序或指令的第一存储区和存储数据的第二存储区，其中，第一存储区可存储操作系统、至少一个功能所需的应用程序或指令(比如声音播放功能、图像播放功能等)等。此外，存储器109可以包括易失性存储器或非易失性存储器，或者，存储器109可以包括易失性和非易失性存储器两者。其中，非易失性存储器可以是只读存储器(Read-Only Memory，ROM)、可编程只读存储器(Programmable ROM，PROM)、可擦除可编程只读存储器(Erasable PROM，EPROM)、电可擦除可编程只读存储器(Electrically EPROM，EEPROM)或闪存。易失性存储器可以是随机存取存储器(Random Access Memory，RAM)，静态随机存取存储器(Static RAM，SRAM)、动态随机存取存储器(Dynamic RAM，DRAM)、同步动态随机存取存储器(Synchronous DRAM，SDRAM)、双倍数据速率同步动态随机存取存储器(Double Data Rate SDRAM，DDRSDRAM)、增强型同步动态随机存取存储器(Enhanced SDRAM，ESDRAM)、同步连接动态随机存取存储器(Synch link DRAM，SLDRAM)和直接内存总线随机存取存储器(Direct Rambus RAM，DRRAM)。本申请实施例中的存储器109包括但不限于这些和任意其他适合类型的存储器。
处理器110可包括一个或多个处理单元；可选地，处理器110集成应用处理器和调制解调处理器，其中，应用处理器主要处理涉及操作系统、用户界面和应用程序等的操作，调制解调处理器主要处理无线通信信号，如基带处理器。可以理解的是，上述调制解调处理器也可以不集成到处理器110中。
其中，射频单元101，用于从通信设备接收第一目标信息，该第一目标信息用于指示：BSC设备发送反向散射信号的参数，或是否对第一信号进行联合信道估计。
处理器110，用于根据第一目标信息，确定是否对第一信号进行联合信道估计。
其中，上述反向散射信号是：BSC设备对第一信号进行调制得到的。
本申请实施例提供的终端，由于终端可以根据通信设备指示的BSC设备发送反向散射信号的参数(或是否对第一信号进行联合信道估计)，确定是否对第一信号进行联合信道估计，而不是直接对第一信号进行联合信道估计，因此，可以避免终端对第一信号进行的联合信道估计，受到该第一信号关联的反向散射信号的影响，从而可以避免影响信道估计的性能，如此，可以提高终端对射频信号进行解调的性能。
可选地，本申请实施例中，上述第一目标信息包括：目标时长。
处理器110，具体用于在BSC设备发送反向散射信号的目标时频资源与第一信号的时频资源重叠的情况下，确定在目标时长内进行联合信道估计。
其中，上述目标时频资源是：根据第一目标信息确定的。
如此可知，由于在BSC设备发送反向散射信号的目标时频资源与第一信号的时频资源重叠的情况下，终端可以在目标时长内进行联合信道估计，因此可以避免信号的幅度不连续的问题，如此可以避免影响信道估计的性能。
可选地，本申请实施例中，处理器110，具体用于在目标时长大于或等于第一信号的N个时间单元的长度的情况下，确定在目标时长内进行N个时间单元内的联合信道估计。
处理器110，还用于在目标时长小于第一信号的N个时间单元的长度的情况下，确定在目标时长内不进行N个时间单元内的联合信道估计。
其中，N为正整数。
可选地，本申请实施例中，处理器110，具体用于在第一目标信息包括第一指示信息的情况下，确定不对第一信号进行M个时间单元内的联合信道估计；或者，在第一目标信息包括第二指示信息的情况下，确定对第一信号进行M个时间单元内的联合信道估计；或者，在第一目标信息包括第三指示信息的情况下，确定不对第一信号进行T个符号的联合信道估计；或者，在第一目标信息包括第四指示信息的情况下，确定对第一信号进行T个符号的联合信道估计；或者，在第一目标信息包括第五指示信息的情况下，确定对第一信号进行R个时间单元内的联合信道估计。
可选地，本申请实施例中，射频单元101，还用于向通信设备发送第一请求消息，该第一请求消息用于请求：BSC设备发送反向散射信号的参数。
可选地，本申请实施例中，射频单元101，具体用于在终端确定接收的信号关联反向散射信号的情况下，向通信设备发送第一请求消息。
可选地，本申请实施例中，射频单元101，还用于从通信设备接收第二请求消息，该第二请求消息用于请求：终端确定接收的信号是否关联反向散射信号；并在终端确定接收的信号关联反向散射信号的情况下，向通信设备发送第一反馈消息，该第一反馈消息用于指示：终端接收的信号关联反向散射信号。
其中，上述第一目标信息是：通信设备在接收到第一反馈消息的情况下发送的。
本申请实施例还提供一种网络侧设备，包括处理器和通信接口，该通信接口，用于向终端发送第一目标信息，该第一目标信息用于指示：BSC设备发送反向散射信号的参数，或是否对第一信号进行联合信道估计。其中，上述反向散射信号是：BSC设备对第一信号进行调制得到的；上述第一目标信息，用于终端确定是否对第一信号进行联合信道估计。该网络侧设备实施例与上述网络侧设备方法实施例对应，上述方法实施例的各个实施过程和实现方式均可适用于该网络侧设备实施例中，且能达到相同的技术效果。
具体地，本申请实施例还提供了一种网络侧设备。如图14所示，该网络侧设备200包括：天线201、射频装置202、基带装置203、处理器204和存储器205。天线201与射频装置202连接。在上行方向上，射频装置202通过天线201接收信息，将接收的信息发送给基带装置203进行处理。在下行方向上，基带装置203对要发送的信息进行处理，并发送给射频装置202，射频装置202对收到的信息进行处理后经过天线201发送出去。
以上实施例中网络侧设备执行的方法可以在基带装置203中实现，该基带装置203包括基带处理器。
基带装置203例如可以包括至少一个基带板，该基带板上设置有多个芯片，如图14所示，其中一个芯片例如为基带处理器，通过总线接口与存储器205连接，以调用存储器205中的程序，执行以上方法实施例中所示的网络侧设备操作。
该网络侧设备还可以包括网络接口206，该接口例如为通用公共无线接口(common public radio interface，CPRI)。
具体地，本发明实施例的网络侧设备200还包括：存储在存储器205上并可在处理器204上运行的指令或程序，处理器204调用存储器205中的指令或程序执行图11所示各模块执行的方法，并达到相同的技术效果，为避免重复，故不在此赘述。
本申请实施例还提供一种可读存储介质，所述可读存储介质上存储有程序或指令，该程序或指令被处理器执行时实现上述信道估计方法实施例的各个过程，且能达到相同的技术效果，为避免重复，这里不再赘述。
其中，所述处理器为上述实施例中所述的终端中的处理器。所述可读存储介质，包括计算机可读存储介质，如计算机只读存储器ROM、随机存取存储器RAM、磁碟或者光盘等。
本申请实施例另提供了一种芯片，所述芯片包括处理器和通信接口，所述通信接口和所述处理器耦合，所述处理器用于运行程序或指令，实现上述信道估计方法实施例的各个过程，且能达到相同的技术效果，为避免重复，这里不再赘述。
应理解，本申请实施例提到的芯片还可以称为系统级芯片，系统芯片，芯片系统或片上系统芯片等。
本申请实施例另提供了一种计算机程序/程序产品，所述计算机程序/程序产品被存储在存储介质中，所述计算机程序/程序产品被至少一个处理器执行以实现上述信道估计方法实施例的各个过程，且能达到相同的技术效果，为避免重复，这里不再赘述。
本申请实施例还提供了一种信道估计系统，包括：终端及网络侧设备，所述终端可用于执行如上所述的信道估计方法的步骤，所述网络侧设备可用于执行如上所述的信道估计方法的步骤。
需要说明的是，在本文中，术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含，从而使得包括一系列要素的过程、方法、物品或者装置不仅包括那些要素，而且还包括没有明确列出的其他要素，或者是还包括为这种过程、方法、物品或者装置所固有的要素。在没有更多限制的情况下，由语句“包括一个``”限定的要素，并不排除在包括该要素的过程、方法、物品或者装置中还存在另外的相同要素。此外，需要指出的是，本申请实施方式中的方法和装置的范围不限按示出或讨论的顺序来执行功能，还可包括根据所涉及的功能按基本同时的方式或按相反的顺序来执行功能，例如，可以按不同于所描述的次序来执行所描述的方法，并且还可以添加、省去、或组合各种步骤。另外，参照某些示例所描述的特征可在其他示例中被组合。
通过以上的实施方式的描述，本领域的技术人员可以清楚地了解到上述实施例方法可借助软件加必需的通用硬件平台的方式来实现，当然也可以通过硬件，但很多情况下前者是更佳的实施方式。基于这样的理解，本申请的技术方案本质上或者说对现有技术做出贡献的部分可以以计算机软件产品的形式体现出来，该计算机软件产品存储在一个存储介质(如ROM/RAM、磁碟、光盘)中，包括若干指令用以使得一台终端(可以是手机，计算机，服务器，空调器，或者网络侧设备等)执行本申请各个实施例所述的方法。
上面结合附图对本申请的实施例进行了描述，但是本申请并不局限于上述的具体实施方式，上述的具体实施方式仅仅是示意性的，而不是限制性的，本领域的普通技术人员在本申请的启示下，在不脱离本申请宗旨和权利要求所保护的范围情况下，还可做出很多形式，均属于本申请的保护之内。

Claims (41)

  1. 一种信道估计方法，所述方法包括：
    用户设备UE从通信设备接收第一目标信息，所述第一目标信息用于指示：反向散射通信BSC设备发送反向散射信号的参数，或是否对第一信号进行联合信道估计；
    所述UE根据所述第一目标信息，确定是否对所述第一信号进行所述联合信道估计；
    其中，所述反向散射信号是：所述BSC设备对所述第一信号进行调制得到的。
  2. 根据权利要求1所述的方法，其中，所述第一目标信息用于指示：所述BSC设备发送所述反向散射信号的参数；
    所述BSC设备发送所述反向散射信号的参数包括以下至少一项：
    所述BSC设备发送所述反向散射信号的目标时间信息；
    所述反向散射信号的至少一个周期长度；
    所述反向散射信号的符号长度；
    所述反向散射信号的传输时长；
    所述反向散射信号的调制方式；
    所述反向散射信号的编码方式；
    所述反向散射信号的分界符的长度；
    所述分界符的时间偏移量；
    所述反向散射信号的前导码的长度；
    所述前导码的时间偏移量；
    所述BSC设备的同步相关的信息；
    所述BSC设备对所述第一信号进行移频的相关信息；
    目标时长；
    其中，所述分界符用于指示：所述反向散射信号的起始时刻；
    所述目标时长为：所述反向散射信号的幅度和相位不变的最小时长。
  3. 根据权利要求2所述的方法，其中，所述目标时间信息包括以下任一项：
    第一时间信息，所述第一时间信息包括：非周期性传输模式信息和非周期性传输的时间信息中的至少一项；
    第二时间信息，所述第二时间信息包括：周期性传输模式信息、传输周期以及周期性传输的时间信息中的至少一项。
  4. 根据权利要求2所述的方法，其中，所述BSC设备的同步相关的信息包括以下至少一项：
    所述反向散射信号的符号或时隙的起始时刻；
    所述BSC设备的定时与目标定时之间的偏差信息，所述目标定时包括以下任一项：所述第一信号的定时、所述通信设备的定时。
  5. 根据权利要求2所述的方法，其中，所述BSC设备对所述第一信号进行移频的相关信息包括以下至少一项：
    是否支持频移；
    频点搬移后的中心频点；
    频点搬移后的带宽。
  6. 根据权利要求2至5中任一项所述的方法，其中，所述第一目标信息包括：所述目标时长；
    所述UE根据所述第一目标信息，确定是否对所述第一信号进行所述联合信道估计，包括：
    在所述BSC设备发送所述反向散射信号的目标时频资源与所述第一信号的时频资源重叠的情况下，所述UE确定在所述目标时长内进行所述联合信道估计；
    其中，所述目标时频资源是：根据所述第一目标信息确定的。
  7. 根据权利要求6所述的方法，其中，所述UE确定在目标时长内进行所述联合信道估计，包括：
    在所述目标时长大于或等于所述第一信号的N个时间单元的长度的情况下，所述UE确定在所述目标时长内进行所述N个时间单元内的所述联合信道估计；
    所述方法还包括：
    在所述目标时长小于所述第一信号的N个时间单元的长度的情况下，所述UE确定在所述目标时长内不进行所述N个时间单元内的所述联合信道估计；
    其中，N为正整数。
  8. 根据权利要求1所述的方法，其中，所述第一目标信息用于指示：是否对所述 第一信号进行所述联合信道估计；
    所述第一目标信息包括以下至少一项：
    第一指示信息，所述第一指示信息用于指示：所述UE不对所述第一信号进行M个时间单元内的所述联合信道估计；
    第二指示信息，所述第二指示信息用于指示：所述UE对所述第一信号进行所述M个时间单元内的所述联合信道估计；
    第三指示信息，所述第三指示信息用于指示：所述UE不对所述第一信号进行T个符号的所述联合信道估计；
    第四指示信息，所述第四指示信息用于指示：所述UE对所述第一信号进行所述T个符号的所述联合信道估计；
    第五指示信息，所述第五指示信息用于指示：所述UE对所述第一信号进行R个时间单元内的所述联合信道估计；
    其中，所述T个符号为同一个时间单元中的符号，M、T均为大于1的正整数，R为大于0、且小于1的小数。
  9. 根据权利要求8所述的方法，其中，所述UE根据所述第一目标信息，确定是否对所述第一信号进行所述联合信道估计，包括：
    在所述第一目标信息包括所述第一指示信息的情况下，所述UE确定不对所述第一信号进行所述M个时间单元内的所述联合信道估计；或者，
    在所述第一目标信息包括所述第二指示信息的情况下，所述UE确定对所述第一信号进行所述M个时间单元内的所述联合信道估计；或者，
    在所述第一目标信息包括所述第三指示信息的情况下，所述UE确定不对所述第一信号进行所述T个符号的所述联合信道估计；或者，
    在所述第一目标信息包括所述第四指示信息的情况下，所述UE确定对所述第一信号进行所述T个符号的所述联合信道估计；或者，
    在所述第一目标信息包括所述第五指示信息的情况下，所述UE确定对所述第一信号进行所述R个时间单元内的所述联合信道估计。
  10. 根据权利要求1所述的方法，其中，所述通信设备包括以下任一项：基站、所述BSC设备、其他UE。
  11. 根据权利要求10所述的方法，其中，所述第一目标信息是：所述通信设备根据第二目标信息确定的；
    其中，所述第二目标信息用于指示：所述BSC设备发送所述反向散射信号的参数；所述第二目标信息是：第一设备发送至所述通信设备的，所述第一设备包括以下任一项：所述BSC设备、所述其他UE。
  12. 根据权利要求1所述的方法，其中，在所述UE从通信设备接收第一目标信息之前，所述方法还包括：
    所述UE向所述通信设备发送第一请求消息，所述第一请求消息用于请求：所述BSC设备发送所述反向散射信号的参数。
  13. 根据权利要求12所述的方法，其中，所述UE向所述通信设备发送第一请求消息，包括：
    在所述UE确定接收的信号关联所述反向散射信号的情况下，所述UE向所述通信设备发送所述第一请求消息。
  14. 根据权利要求1所述的方法，其中，在所述UE从通信设备接收第一目标信息之前，所述方法还包括：
    所述UE从所述通信设备接收第二请求消息，所述第二请求消息用于请求：所述UE确定接收的信号是否关联所述反向散射信号；
    在所述UE确定接收的信号所述反向散射信号的情况下，所述UE向所述通信设备发送第一反馈消息，所述第一反馈消息用于指示：所述UE接收的信号关联所述反向散射信号；
    其中，所述第一目标信息是：所述通信设备在接收到所述第一反馈消息的情况下发送的。
  15. 根据权利要求14所述的方法，其中，所述第二请求消息包括以下至少一项：
    第三请求消息，所述第三请求消息用于请求：所述UE确定是否在目标资源上接收的信号关联所述反向散射信号，所述目标资源包括以下至少一项：目标时域资源和目标频域资源；
    第四请求消息，所述第四请求消息用于请求：所述UE确定是否接收到目标序列信息，所述目标序列信息与所述BSC设备的标识相关联，或与所述反向散射信号的加扰序列相关。
  16. 一种信道估计方法，所述方法包括：
    通信设备向UE发送第一目标信息，所述第一目标信息用于指示：BSC设备发送反向散射信号的参数，或是否对第一信号进行联合信道估计；
    其中，所述反向散射信号是：所述BSC设备对所述第一信号进行调制得到的；
    所述第一目标信息，用于所述UE确定是否对所述第一信号进行所述联合信道估计。
  17. 根据权利要求16所述的方法，其中，在所述通信设备向UE发送第一目标信息之前，所述方法还包括：
    所述通信设备从第一设备接收第二目标信息；
    其中，所述第二目标信息用于指示：所述BSC设备发送所述反向散射信号的参数；所述第一目标信息是根据所述第二目标信息确定的；
    所述第一设备包括以下任一项：所述BSC设备、其他UE。
  18. 根据权利要求17所述的方法，其中，在所述通信设备从第一设备接收第二目标信息之前，所述方法还包括：
    所述通信设备向所述第一设备发送第五请求消息，所述第五请求消息用于请求：所述BSC设备发送所述反向散射信号的参数。
  19. 根据权利要求16所述的方法，其中，在所述通信设备向UE发送第一目标信息之前，所述方法还包括：
    所述通信设备向所述UE发送第二请求消息，所述第二请求消息用于请求：所述UE确定接收的信号是否关联所述反向散射信号；
    所述通信设备向UE发送第一目标信息，包括：
    在所述通信设备从所述UE接收到第一反馈消息的情况下，向所述UE发送所述第一目标信息；
    其中，所述第一反馈消息用于指示：所述UE接收的信号关联所述反向散射信号。
  20. 一种信道估计装置，所述信道估计装置为第一信道估计装置，所述第一信道估计装置包括：接收模块和确定模块；
    所述接收模块，用于从第二信道估计装置接收第一目标信息，所述第一目标信息用于指示：反向散射通信BSC设备发送反向散射信号的参数，或是否对第一信号进行联合信道估计；
    所述确定模块，用于根据所述接收模块接收的所述第一目标信息，确定是否对所述第一信号进行所述联合信道估计；
    其中，所述反向散射信号是：所述BSC设备对所述第一信号进行调制得到的。
  21. 根据权利要求20所述的信道估计装置，其中，所述第一目标信息用于指示：所述BSC设备发送所述反向散射信号的参数；
    所述BSC设备发送所述反向散射信号的参数包括以下至少一项：
    所述BSC设备发送所述反向散射信号的目标时间信息；
    所述反向散射信号的至少一个周期长度；
    所述反向散射信号的符号长度；
    所述反向散射信号的传输时长；
    所述反向散射信号的调制方式；
    所述反向散射信号的编码方式；
    所述反向散射信号的分界符的长度；
    所述分界符的时间偏移量；
    所述反向散射信号的前导码的长度；
    所述前导码的时间偏移量；
    所述BSC设备的同步相关的信息；
    所述BSC设备对所述第一信号进行移频的相关信息；
    目标时长；
    其中，所述分界符用于指示：所述反向散射信号的起始时刻；
    所述目标时长为：所述反向散射信号的幅度和相位不变的最小时长。
  22. 根据权利要求21所述的信道估计装置，其中，所述目标时间信息包括以下任一项：
    第一时间信息，所述第一时间信息包括：非周期性传输模式信息和非周期性传输的时间信息中的至少一项；
    第二时间信息，所述第二时间信息包括：周期性传输模式信息、传输周期以及周期性传输的时间信息中的至少一项。
  23. 根据权利要求21所述的信道估计装置，其中，所述BSC设备的同步相关的 信息包括以下至少一项：
    所述反向散射信号的符号或时隙的起始时刻；
    所述BSC设备的定时与目标定时之间的偏差信息，所述目标定时包括以下任一项：所述第一信号的定时、所述第二信道估计装置的定时。
  24. 根据权利要求21所述的信道估计装置，其中，所述BSC设备对所述第一信号进行移频的相关信息包括以下至少一项：
    是否支持频移；
    频点搬移后的中心频点；
    频点搬移后的带宽。
  25. 根据权利要求21至24中任一项所述的信道估计装置，其中，所述第一目标信息包括：所述目标时长；
    所述确定模块，具体用于在所述BSC设备发送所述反向散射信号的目标时频资源与所述第一信号的时频资源重叠的情况下，确定在所述目标时长内进行所述联合信道估计；
    其中，所述目标时频资源是：根据所述第一目标信息确定的。
  26. 根据权利要求25所述的信道估计装置，其中，所述确定模块，具体用于在所述目标时长大于或等于所述第一信号的N个时间单元的长度的情况下，确定在所述目标时长内进行所述N个时间单元内的所述联合信道估计；
    所述确定模块，还用于在所述目标时长小于所述第一信号的N个时间单元的长度的情况下，确定在所述目标时长内不进行所述N个时间单元内的所述联合信道估计；
    其中，N为正整数。
  27. 根据权利要求20所述的信道估计装置，其中，所述第一目标信息用于指示：是否对所述第一信号进行所述联合信道估计；
    所述第一目标信息包括以下至少一项：
    第一指示信息，所述第一指示信息用于指示：所述第一信道估计装置不对所述第一信号进行M个时间单元内的所述联合信道估计；
    第二指示信息，所述第二指示信息用于指示：所述第一信道估计装置对所述第一信号进行所述M个时间单元内的所述联合信道估计；
    第三指示信息，所述第三指示信息用于指示：所述第一信道估计装置不对所述第一信号进行T个符号的所述联合信道估计；
    第四指示信息，所述第四指示信息用于指示：所述第一信道估计装置对所述第一信号进行所述T个符号的所述联合信道估计；
    第五指示信息，所述第五指示信息用于指示：所述第一信道估计装置对所述第一信号进行R个时间单元内的所述联合信道估计；
    其中，所述T个符号为同一个时间单元中的符号，M、T均为大于1的正整数，R为大于0、且小于1的小数。
  28. 根据权利要求27所述的信道估计装置，其中，所述确定模块，具体用于在所述第一目标信息包括所述第一指示信息的情况下，确定不对所述第一信号进行所述M个时间单元内的所述联合信道估计；或者，在所述第一目标信息包括所述第二指示信息的情况下，确定对所述第一信号进行所述M个时间单元内的所述联合信道估计；或者，在所述第一目标信息包括所述第三指示信息的情况下，确定不对所述第一信号进行所述T个符号的所述联合信道估计；或者，在所述第一目标信息包括所述第四指示信息的情况下，确定对所述第一信号进行所述T个符号的所述联合信道估计；或者，在所述第一目标信息包括所述第五指示信息的情况下，确定对所述第一信号进行所述R个时间单元内的所述联合信道估计。
  29. 根据权利要求20所述的信道估计装置，其中，所述第二信道估计装置包括以下任一项：基站、所述BSC设备、其他信道估计装置。
  30. 根据权利要求29所述的信道估计装置，其中，所述第一目标信息是：所述第二信道估计装置根据第二目标信息确定的；
    其中，所述第二目标信息用于指示：所述BSC设备发送所述反向散射信号的参数；所述第二目标信息是：第一设备发送至所述第二信道估计装置的，所述第一设备包括以下任一项：所述BSC设备、所述其他信道估计装置。
  31. 根据权利要求20所述的信道估计装置，其中，所述第一信道估计装置还包括：发送模块；
    所述发送模块，用于向所述第二信道估计装置发送第一请求消息，所述第一请求消息用于请求：所述BSC设备发送所述反向散射信号的参数。
  32. 根据权利要求31所述的信道估计装置，其中，所述发送模块，具体用于在所 述第一信道估计装置确定接收的信号关联所述反向散射信号的情况下，向所述第二信道估计装置发送所述第一请求消息。
  33. 根据权利要求20所述的信道估计装置，其中，所述接收模块，还用于从所述第二信道估计装置接收第二请求消息，所述第二请求消息用于请求：所述第一信道估计装置确定接收的信号是否关联所述反向散射信号；并在所述第一信道估计装置确定接收的信号关联所述反向散射信号的情况下，向所述第二信道估计装置发送第一反馈消息，所述第一反馈消息用于指示：所述第一信道估计装置接收的信号关联所述反向散射信号；
    其中，所述第一目标信息是：所述第二信道估计装置在接收到所述第一反馈消息的情况下发送的。
  34. 根据权利要求33所述的信道估计装置，其中，所述第二请求消息包括以下至少一项：
    第三请求消息，所述第三请求消息用于请求：所述第一信道估计装置确定是否在目标资源上接收的信号关联所述反向散射信号，所述目标资源包括以下至少一项：目标时域资源和目标频域资源；
    第四请求消息，所述第四请求消息用于请求：所述第一信道估计装置确定是否接收到目标序列信息，所述目标序列信息与所述BSC设备的标识相关联，或与所述反向散射信号的加扰序列相关。
  35. 一种信道估计装置，所述信道估计装置为第二信道估计装置，所述第二信道估计装置包括：发送模块；
    所述发送模块，用于向第一信道估计装置发送第一目标信息，所述第一目标信息用于指示：BSC设备发送反向散射信号的参数，或是否对第一信号进行联合信道估计；
    其中，所述反向散射信号是：所述BSC设备对所述第一信号进行调制得到的；
    所述第一目标信息，用于所述第一信道估计装置确定是否对所述第一信号进行所述联合信道估计。
  36. 根据权利要求35所述的信道估计装置，其中，所述第二信道估计装置还包括：接收模块；
    所述接收模块，用于从第一设备接收第二目标信息；
    其中，所述第二目标信息用于指示：所述BSC设备发送所述反向散射信号的参数；所述第一目标信息是根据所述第二目标信息确定的；
    所述第一设备包括以下任一项：所述BSC设备、其他信道估计装置。
  37. 根据权利要求36所述的信道估计装置，其中，所述发送模块，还用于向所述第一设备发送第五请求消息，所述第五请求消息用于请求：所述BSC设备发送所述反向散射信号的参数。
  38. 根据权利要求35所述的信道估计装置，其中，所述发送模块，还用于向所述第一信道估计装置发送第二请求消息，所述第二请求消息用于请求：所述第一信道估计装置确定接收的信号是否关联所述反向散射信号；
    所述发送模块，具体用于在所述第二信道估计装置从所述第一信道估计装置接收到第一反馈消息的情况下，向所述第一信道估计装置发送所述第一目标信息；
    其中，所述第一反馈消息用于指示：所述第一信道估计装置接收的信号关联所述反向散射信号。
  39. 一种终端，包括处理器和存储器，所述存储器存储可在所述处理器上运行的程序或指令，所述程序或指令被所述处理器执行时实现如权利要求1至19中任一项所述的信道估计方法的步骤。
  40. 一种网络侧设备，包括处理器和存储器，所述存储器存储可在所述处理器上运行的程序或指令，所述程序或指令被所述处理器执行时实现如权利要求16至19中任一项所述的信道估计方法的步骤。
  41. 一种可读存储介质，所述可读存储介质上存储程序或指令，所述程序或指令被处理器执行时实现如权利要求1至19中任一项所述的信道估计方法的步骤。
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