WO2019201350A1 - 信号处理方法及装置 - Google Patents

信号处理方法及装置 Download PDF

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Publication number
WO2019201350A1
WO2019201350A1 PCT/CN2019/083571 CN2019083571W WO2019201350A1 WO 2019201350 A1 WO2019201350 A1 WO 2019201350A1 CN 2019083571 W CN2019083571 W CN 2019083571W WO 2019201350 A1 WO2019201350 A1 WO 2019201350A1
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WIPO (PCT)
Prior art keywords
signal
information
common signal
terminal device
service data
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Application number
PCT/CN2019/083571
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English (en)
French (fr)
Inventor
王俊伟
黎超
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华为技术有限公司
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Publication of WO2019201350A1 publication Critical patent/WO2019201350A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0058—Allocation criteria
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0078—Timing of allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/0231—Traffic management, e.g. flow control or congestion control based on communication conditions
    • H04W28/0236—Traffic management, e.g. flow control or congestion control based on communication conditions radio quality, e.g. interference, losses or delay
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • 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
    • H04W72/0446—Resources in time domain, e.g. slots or frames
    • 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
    • H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA

Definitions

  • the present invention relates to the field of network technologies, and in particular, to a signal processing method and apparatus.
  • network devices In addition to transmitting service data, network devices usually send other common signals, such as a Synchro signal block (SSB), remaining system information (RMSI), and so on.
  • SSB Synchro signal block
  • RMSI remaining system information
  • the terminal device needs to receive the service data, if the other public signal occupies the same time-frequency resource as the service data, the other common signal constitutes an interference signal to the service data.
  • the network device sends the service data to the terminal device in an SSB coverage area, and the network device sends the SSB signal in another SSB coverage area, and the time-frequency resource of the service data is the same as the time-frequency resource of the SSB signal, and the terminal device is the same.
  • the SSB signal of the other SSB coverage area is also received, that is, there is a co-channel interference problem of the service data and the SSB signal, and the co-channel interference reduces the demodulation performance of the service data channel.
  • the method of canceling the same-frequency interference is to perform complex iterative calculation on the received signal received by the terminal device, thereby reconstructing the interference signal, which requires computational resources and brings an algorithmic Complexity, and the reconstructed interfering signals are also not accurate enough.
  • Embodiments of the present invention provide a signal processing method and apparatus, which can reduce the complexity of interference cancellation processing, and/or improve the accuracy of interference cancellation.
  • an embodiment of the present invention provides a signal processing method, where the method includes: receiving, by a terminal device, scheduling signaling of service data, where the scheduling signaling includes scheduling information of service data, where scheduling information of the service data may include the service data. Time domain resources, frequency domain resources, and so on.
  • the terminal device receives a configuration message of a common signal, where the configuration message includes configuration information of a common signal, and the common signal is a periodically transmitted signal, and the configuration information of the common signal may include a time period of sending the public signal and a time domain resource where the common signal is located. And the frequency domain resources where the public signal is located, and so on.
  • the terminal device determines that the service data and the public signal have co-channel interference according to the scheduling information of the service data and the configuration information of the common signal, that is, the time-frequency resource where the service data is located and the time-frequency resource where the public signal is located overlap.
  • the terminal device performs interference cancellation processing according to historical feature information of the common signal.
  • the historical feature information of the common signal is used for interference cancellation processing, and complicated calculation is not required in the interference cancellation processing process, which can be more accurate.
  • the configuration information may include configuration information of a common signal of a cell neighboring cell to which the terminal device belongs
  • the scheduling information may include scheduling information of service data of a cell to which the terminal device belongs.
  • the common-frequency interference of the public signal of the neighboring cell of the cell to which the terminal device belongs may be canceled to the service data of the cell to which the terminal device belongs.
  • the configuration information may include configuration information of a common signal of a cell to which the terminal device belongs
  • the scheduling information may include scheduling information of service data of a cell to which the terminal device belongs.
  • the scheduling information of the service data includes time-frequency resource information of the service data
  • the configuration information of the common signal includes time-frequency resource information of the common signal.
  • the time domain resource information and the frequency domain resource information where the service data is located are collectively referred to as time-frequency resource information
  • the time-frequency resource information of the common signal includes the time when the public signal of each time period in the public signal periodically transmitted is located.
  • the domain resource information and the frequency domain resource information need to be described.
  • the indication of the time-frequency resource information indicating the public signal periodically transmitted may be various:
  • the configuration information may indicate a sending time period, a time offset, a frequency domain resource information, and the like of the common signal, where the time offset refers to a distance between a starting time of the time period and a time period.
  • the offset for example, the time period is 20 ms, then the time offset can be 3 ms, that is, the common signal is transmitted at 3 ms every 20 ms period.
  • Whether the configuration information needs to indicate the start time of the time period may be determined according to a specific situation. For example, if the public signal is detected by the terminal device itself, the start time information of the time period of the public signal is detected by the terminal device. The time of the SSB is determined.
  • the terminal device searches for the SSB in all search windows, and obtains a Primary Synchronization Signal (PSS) and a Secondary Synchronization Signal (SSS).
  • PSS Primary Synchronization Signal
  • SSS Secondary Synchronization Signal
  • the cell ID corresponding to the SSB continues to receive the SSB of the cell, and the periodically sent SSB is detected by the terminal itself. Therefore, the terminal device can learn the start time of the time period, and the configuration information does not need to indicate the start time. If the public signal is not detected by the terminal device itself, the start time of the time period of the common signal needs to be configured by signaling, or the start time is indicated in the configuration information of the common signal.
  • the configuration information may directly indicate time domain resource information and frequency domain resource information where the public signal is located in each time period.
  • Determining, by the terminal device, whether the service data and the public signal have co-channel interference determining the service data and the current time period according to the time-frequency resource information of the service data and the time-frequency resource information of the common signal.
  • the common signal transmitted has co-channel interference. For example, if the time-frequency resource where the service data is located overlaps with the time-frequency resource where the time-frequency resource of the public signal sent in the current time period overlaps, it is determined that the service data and the common signal sent in the current time period have the same-frequency interference.
  • the historical feature information of the common signal may include the feature information of the common signal transmitted in the historical time period.
  • the feature information of the common signal sent in one historical time period or multiple historical time periods may be .
  • the feature information of the common signal sent by the historical time period is extracted from the received signal of the historical time period, and the received signal is the signal received by the terminal device during the historical time period, and the received signal includes the historical time.
  • a public signal sent periodically, but the received signal does not contain traffic data.
  • the feature information of the common signal transmitted in the historical time period can be extracted by the received signal of the historical time period, thereby accurately estimating the interference characteristics of the common signal in the current time period, and improving the accuracy of the interference cancellation.
  • the feature information may include bit information of a common signal sent in the historical time period
  • the acquiring manner of the bit information by the terminal device may be: sampling the received signal in the historical time period to obtain a Quadrature Amplitude Modulation (QAM) symbol, and then demodulating the QAM symbol to obtain soft bit information, and the terminal device performs a decision process on the soft bit information to obtain a bit of the common signal transmitted in the historical time period.
  • QAM symbol can be obtained through the bit information and the modulation and coding format, and the interference signal is reconstructed according to the QAM symbol and the subcarrier spacing, thereby performing interference cancellation processing.
  • the interference information of the common signal with the same frequency interference in the current time period can be interfered by the bit information of the common signal transmitted in the historical time period, thereby improving the accuracy of the interference cancellation.
  • the feature information may include soft bit information of a common signal transmitted in a historical time period
  • the acquiring manner of the soft bit information by the terminal device may be: sampling the received signal, obtaining a QAM symbol, and then performing QAM on the QAM symbol.
  • the symbol performs demodulation processing to obtain soft bit information of the common signal transmitted in the historical time period.
  • the bit information can be obtained through the soft bit information, and then the QAM symbol is obtained through the bit information and the modulation and coding format.
  • the interference signal is reconstructed according to the QAM symbol and the subcarrier interval, thereby performing interference cancellation processing.
  • the soft bit information of the common signal transmitted in the historical time period can be used to perform interference cancellation processing on the common signal with the same frequency interference in the current time period, thereby improving the accuracy of interference cancellation.
  • the feature information may include statistical feature information of the common signal sent by the historical time period, and the acquiring manner of the statistical feature information by the terminal device may be: calculating a statistical feature value of the received signal, thereby obtaining the history.
  • Statistical characteristic information of a common signal transmitted in a time period may include statistical feature information of the common signal sent by the historical time period.
  • the feature information may include Resource Elements (RE) symbol information, which may include QAM symbols and subcarrier spacing.
  • the QAM symbol may be obtained by the terminal device sampling the received signal.
  • the interference signal can be reconstructed directly through the QAM symbol and the subcarrier spacing to perform interference cancellation processing.
  • the interference cancellation processing can be performed without demodulating the received signal of the historical time period, and the efficiency is high, and the received signal of the historical time period that cannot be demodulated can be realized, and the interference signal is heavy. Structure.
  • the processing method of the interference cancellation processing performed by the terminal device according to the historical feature information of the common signal may be: constructing a reconstructed signal corresponding to the common signal according to historical feature information of the common signal, thereby The signal is subjected to interference cancellation processing.
  • the historical feature information of the common signal includes, but is not limited to, bit information, soft bit information, RE symbol information, and the like of a common signal of a historical time period.
  • the accuracy of interference cancellation can be improved by reconstructing the reconstructed signal corresponding to the common signal.
  • the processing method of the interference cancellation processing performed by the terminal device according to the historical characteristic information of the common signal may be: the historical characteristic information of the common signal is used as interference of Interference Rejection Combining (IRC).
  • the characteristic input factor is used to perform interference cancellation processing using the IRC algorithm.
  • the historical feature information of the public signal includes statistical feature information of a common signal of a historical time period, and the statistical feature information includes, but is not limited to, a variance, a standard deviation, and the like.
  • the statistical characteristic information of the common signal of the historical time period is used as the interference characteristic input factor of the IRC algorithm, and the interference cancellation processing is performed by the IRC algorithm, which can improve the accuracy of the interference cancellation and has high efficiency.
  • the terminal device may first determine the signal energy intensity of the common signal in the process of performing interference cancellation processing according to historical feature information of the common signal, and the specific determination manner may be calculating a common signal including a historical time period.
  • the signal energy intensity of the received signal if the signal energy intensity is less than a predetermined threshold, performs interference cancellation processing based on the historical characteristic information of the common signal. If the signal energy intensity of the common signal is greater than a preset threshold, the interference is too strong, and the time-frequency resource where the time-frequency resource where the service data is located and the time-frequency resource where the common signal of the current time period is located may be overlapped.
  • the carried signal is deleted.
  • the common signal can include SSB or RMSI.
  • an embodiment of the present invention provides a signal processing apparatus, which has a function of implementing the behavior of a terminal device in the method of the first aspect.
  • the functions may be implemented by hardware or by corresponding software implemented by hardware.
  • the hardware or software includes one or more modules or units corresponding to the functions described above.
  • the signal processing device comprises a receiving unit and a processing unit, the receiving unit is configured to receive a signal or information, and the processing unit is configured to process the signal or information received by the receiving unit.
  • the receiving unit is configured to receive scheduling signaling of the service data, where the scheduling signaling includes scheduling information of the service data, and the receiving unit is further configured to receive a configuration message of the public signal, where the configuration message includes the public signal
  • the configuration information, the common signal is a periodically transmitted signal
  • the processing unit is configured to determine, according to the scheduling information of the service data and the configuration information of the common signal, that the service data and the public signal have the same frequency Interference;
  • the processing unit is further configured to perform interference cancellation processing according to historical feature information of the common signal.
  • the signal processing apparatus includes: a transceiver, a memory, and a processor; wherein the transceiver is configured to receive a signal or send a signal.
  • a set of program code is stored in the memory, and the processor is configured to invoke the program code stored in the memory to perform the first aspect and the signal processing method provided in connection with any of the implementations of the first aspect above.
  • the signal processing apparatus includes a processor configured to implement the functionality of the signal processing method provided by the first aspect, the processor being operably coupled to a memory of the peripheral device.
  • the embodiment of the present invention provides a computer storage medium for storing computer software instructions for the terminal device provided by the first aspect, which includes any of the foregoing first aspects and any combination of the foregoing first aspects.
  • an embodiment of the present invention provides a computer program, the computer program comprising instructions, when the computer program is executed by a computer, to enable the computer to perform the above first aspect and in combination with any one of the foregoing first aspects
  • the flow of the signal processing method provided.
  • FIG. 1 is a schematic diagram of an application scenario according to an embodiment of the present invention.
  • FIG. 2 is a schematic structural diagram of a terminal device according to an embodiment of the present invention.
  • FIG. 3 is a schematic flowchart of a signal processing method according to an embodiment of the present invention.
  • FIG. 4 is a schematic flowchart diagram of another signal processing method according to an embodiment of the present invention.
  • FIG. 5a is a schematic diagram of an SSB coverage area according to an embodiment of the present invention.
  • FIG. 5b is a schematic diagram of another SSB coverage area according to an embodiment of the present invention.
  • FIG. 6 is a schematic diagram of an SSB transmission cycle according to an embodiment of the present invention.
  • FIG. 7 is a schematic diagram of a time-frequency structure of an SSB according to an embodiment of the present invention.
  • FIG. 8 is a schematic diagram of an IRC detection algorithm according to an embodiment of the present invention.
  • FIG. 9 is a schematic diagram of another IRC detection algorithm according to an embodiment of the present invention.
  • FIG. 10 is a schematic diagram of interference signal reconstruction according to an embodiment of the present invention.
  • FIG. 11 is a schematic diagram of SSB signal processing according to an embodiment of the present invention.
  • FIG. 12 is a schematic structural diagram of a signal processing apparatus according to an embodiment of the present invention.
  • the mixed signal mentioned in the embodiment of the present invention may be a signal including service data and a common signal received by the terminal device in the current time period.
  • the received signal mentioned in the embodiment of the present invention may be a signal including a common signal received by the terminal device during the historical time period.
  • the time-frequency resource information of the common signal mentioned in the embodiment of the present invention includes time domain resource information and frequency domain resource information in which the common signal of each time period in the periodically transmitted common signal is located, wherein the public that indicates periodic transmission is indicated.
  • the time-frequency resource information of the signal can be indicated in multiple ways.
  • the embodiments of the present invention can be applied to a 5G/New Radio Access Network (NR) system, and can also be applied to other wireless communication systems, such as a Global System for Mobile Communication (GSM), a mobile communication system. (Universal Mobile Telecommunications System, UMTS), Code Division Multiple Access (CDMA) system, and 4G Long Term Evolution (LTE) network system.
  • GSM Global System for Mobile Communication
  • UMTS Universal Mobile Telecommunications System
  • CDMA Code Division Multiple Access
  • LTE Long Term Evolution
  • the wireless communication system usually consists of a cell. As shown in FIG. 1 , each cell includes a base station (BS), the base station provides communication services to multiple terminal devices, and the base station is connected to the core network device.
  • the base station includes a baseband unit (BBU) and a remote radio unit (RRU).
  • BBU baseband unit
  • RRU remote radio unit
  • the BBU and the RRU can be placed in different places. For example, the RRU is placed in an open area from high traffic, and the BBU is placed in the central office. BBUs and RRUs can also be placed in the same room.
  • the BBU and RRU can also be different parts under one rack.
  • a base station is a device deployed in a radio access network to provide a wireless communication function for a terminal device.
  • the base station may include various forms of macro base stations, micro base stations (also referred to as small stations), relay stations, access points, transmission access point (TRP), and the like.
  • TRP transmission access point
  • the name of a device having a base station function may be different, for example, in an LTE system, an evolved Node B (evolved NodeB, eNB or eNodeB), in the third In a 3rd generation (3G) system, it is called a Node B (NB), etc.
  • a base station is called a 5G base station or an NR NodeB.
  • the foregoing devices for providing wireless communication functions to terminal devices are collectively referred to as network devices.
  • the terminal device may be a device that provides voice and/or data connectivity to a user, a handheld device with a wireless connection function, or other processing device connected to a wireless modem.
  • the wireless terminal can communicate with one or more core networks via a Radio Access Network (RAN), which can be a mobile terminal, such as a mobile phone (or "cellular" phone) and a computer with a mobile terminal.
  • RAN Radio Access Network
  • RAN can be a mobile terminal, such as a mobile phone (or "cellular" phone) and a computer with a mobile terminal.
  • RAN Radio Access Network
  • it may be a portable, pocket, handheld, computer built-in or in-vehicle mobile device that exchanges language and/or data with a wireless access network.
  • a wireless terminal may also be called a system, a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, an access point, or an access point.
  • Remote Terminal Access Terminal, User Terminal, User Agent, User Device, or User Equipment.
  • terminal devices are collectively referred to as terminal devices.
  • the network device sends service data to the terminal device, and the network device also sends other public signals, such as SSB, RMSI, and the like. If the time-frequency resources occupied by the service data and other common signals are the same, the same-frequency interference problem may occur.
  • the terminal device receives other public signals and other common signals while receiving the service data from the scheduled time-frequency resources.
  • the same frequency interference is generated for the service data, and the same frequency interference reduces the demodulation performance of the service data.
  • the signal processing method in the embodiment of the present invention is mainly used for the interference cancellation processing when other common signals periodically transmitted generate the same-frequency interference to the service data to be received.
  • the public signal is periodically sent.
  • the manner in which the network device sends the public signal may be sent by means of a broadcast, and the content of the common signal sent in each time period is relatively fixed and substantially the same. Therefore, when determining that the service data and the common signal have co-channel interference, the terminal device may perform interference cancellation processing by using the historical feature information of the common signal. Since the common signals transmitted in each time period are substantially the same, the history according to the common signal The feature information can accurately perform interference cancellation processing, which is low in complexity and high in accuracy.
  • FIG. 2 is a schematic structural diagram of a simplified terminal device according to an embodiment of the present invention.
  • the UE may be the terminal device 1 or the terminal device 2 as shown in FIG. 1 .
  • the UE includes a transceiver 801, a controller/processor 802, and may also include a memory 803 and a modem processor 804.
  • the transceiver 801 conditions (e.g., analog conversion, filtering, amplifying, upconverting, etc.) output samples and generates an uplink signal that is transmitted via an antenna to the base station in the above embodiments.
  • the antenna receives the downlink signal transmitted by the base station in the above embodiment, and the transceiver 801 conditions (e.g., filters, amplifies, downconverts, and digitizes) the signal received from the antenna and provides input samples.
  • Transceivers 801 can be the same or different physical entities. When they are the same physical entity, they can be collectively referred to as the transceiver 801. When they are different physical entities, they can be called receivers and generators.
  • the function of the transceiver 801 can be implemented by a dedicated chip through a transceiver circuit or a transceiver.
  • encoder 8041 receives traffic data and signaling messages to be transmitted on the uplink and processes (e.g., formats, codes, and interleaves) the traffic data and signaling messages.
  • Modulator 8042 further processes (e.g., symbol maps and modulates) the encoded service data and signaling messages and provides output samples.
  • Demodulator 8044 processes (e. g., demodulates) the input samples and provides symbol estimates.
  • the decoder 8043 processes (deinterleaves and decodes) the symbol estimate and provides decoded data and signaling messages that are sent to the UE.
  • Encoder 8041, modulator 8042, demodulator 8044, and decoder 8043 may be implemented by a composite modem processor 804.
  • the controller/processor 802 controls and manages the actions of the UE for performing the processing steps performed by the UE in the embodiment.
  • the controller/processor 802 can be considered to be implemented by a dedicated processing chip, processing circuit, processor, or general purpose chip.
  • the memory 803 is used to store program codes and data for the UE.
  • the memory 803 may be integrated in the controller/processor 802 or may be provided separately from the controller/processor 802.
  • the transceiver 801 is configured to receive scheduling signaling of service data, where the scheduling signaling includes scheduling information of service data, and a configuration message that receives a common signal, where the configuration message includes a configuration of the public signal.
  • Information the public signal is a periodically transmitted signal;
  • the controller/processor 802 is configured to determine, according to the scheduling information of the service data and the configuration information of the common signal, that the service data and the public signal have co-channel interference; and, according to the history of the public signal The feature information is subjected to interference cancellation processing.
  • the configuration information includes configuration information of a common signal of a cell neighboring cell to which the terminal device belongs
  • the scheduling signaling of the service data includes scheduling signaling of service data of a cell to which the terminal device belongs.
  • the configuration information includes configuration information of a common signal of a cell to which the terminal device belongs
  • the scheduling signaling of the service data includes scheduling signaling of service data of a cell to which the terminal device belongs.
  • the scheduling information of the service data includes time-frequency resource information of the service data
  • the configuration information of the common signal includes time-frequency resource information of the public signal.
  • the controller/processor 802 is configured to determine, according to the time-frequency resource information of the service data and the time-frequency resource information of the common signal, that the service data and the common signal sent by the current time period have co-channel interference.
  • the historical feature information of the common signal includes feature information of the common signal sent in a historical time period; and the feature information of the common signal sent in the historical time period is a received signal from the historical time period. Extracted, the received signal includes the common signal sent in the historical time period.
  • If the feature information includes bit information of the common signal sent in the historical time period
  • the transceiver 801 is configured to perform sampling processing on the received signal to obtain a quadrature amplitude modulated QAM symbol;
  • the demodulator 8044 is configured to perform demodulation processing on the QAM symbol to obtain soft bit information, and perform a decision process on the soft bit information to obtain bit information of the common signal sent in the historical time period.
  • the feature information includes soft bit information of the common signal transmitted in a historical time period
  • the transceiver 801 is configured to perform sampling processing on the received signal to obtain a quadrature amplitude modulated QAM symbol;
  • the demodulator 8044 is configured to perform demodulation processing on the QAM symbol to obtain soft bit information of the common signal sent in the historical time period.
  • the feature information includes statistical feature information of the public signal sent in a historical time period
  • the controller/processor 802 is configured to calculate a statistical feature value of the received signal, and obtain statistical feature information of the common signal sent in the historical time period.
  • the controller/processor 802 may construct a reconstructed signal corresponding to the common signal according to historical feature information of the common signal; Interference cancellation processing is performed based on the reconstructed signal.
  • the embodiment of the present invention provides a flowchart of a signal processing method, including but not limited to the following steps:
  • the terminal device receives scheduling signaling of service data, where the scheduling signaling includes scheduling information of service data.
  • the scheduling signaling of the service data needs to be sent to the terminal device, where the scheduling signaling of the service data includes scheduling information of the service data, where the scheduling information includes but is not limited to The time domain resource information, the frequency domain resource information, the modulation and coding format used, the subcarrier spacing, and the like in which the service data is located.
  • the terminal device monitors a physical downlink control channel (PDDCH), acquires scheduling signaling sent by the network device, parses the scheduling signaling, obtains scheduling information of the service data, and obtains a service by using the scheduling information of the service data.
  • PDDCH physical downlink control channel
  • the time-frequency resource information where the data is located and the terminal device receives the service data at the time-frequency resource of the indicated service data.
  • the signal received by the terminal includes not only service data, but also other interference signals, such as other common signals (SSB signals).
  • SSB signals common signals
  • the terminal device receives a configuration message of a common signal, where the configuration message includes configuration information of the common signal, where the public signal is a periodically sent signal.
  • the common signal is a signal transmitted by the network device to the terminal device, and the network device may periodically transmit the common signal by means of a broadcast, wherein the common signal may be an SSB signal or an RMSI.
  • the network device needs to send a configuration message of the common signal, and the configuration message of the common signal includes the configuration information of the common signal.
  • the configuration information of the common signal includes, but is not limited to, a time period for transmitting the common signal, transmission power information, direction information of a receiving beam carrying the common signal, direction information of the transmitting beam, frequency domain resource information where the common signal is located, and a common signal.
  • Time offset ie, the offset in each time period, such as the time period is 20ms, the indicated time offset is 3ms, that is, the common signal is transmitted at the 3ms every 20ms of the time period
  • the common signal The transmission format (modulation coding format) and subcarrier spacing and so on.
  • the time offset of the common signal may be by indicating the frame/subframe/slot/symbol position in one time period, and the frequency domain resource information of the common signal may include the RE symbol occupied by the common signal.
  • the time-frequency resource information in which the common signal is located can be obtained through the configuration information of the common signal.
  • the configuration information may also indicate a start time of a time period of the common signal. If the public signal is detected by the terminal device itself, the start time of the time period may be acquired by the terminal device itself, and the configuration information may not indicate the start time of the time period of the common signal.
  • the case where the public signal is detected by the terminal device may be: the terminal device searches for the SSB in all the search windows in the initial access phase, and obtains the cell ID corresponding to the SSB by blindly detecting the PSS and the SSS, and subsequently continues to receive the SSD.
  • the SSB of the cell, the periodically sent SSB is detected by the terminal itself.
  • the terminal device may be configured to acquire and store the public signal during cell search or measurement.
  • the subsequent terminal device receives the periodically transmitted common signal according to the configuration information of the common signal.
  • the terminal device can not only receive the public signal of the cell to which the terminal device belongs, but also receive the public signal of the cell adjacent to the cell to which the terminal device belongs.
  • the configuration information of the common signal of the neighboring cell needs to be stored in advance, where the terminal device can receive the public signal sent by the network device of the neighboring cell by itself.
  • the configuration message information is analyzed, and the configuration message is parsed to obtain configuration information of a common signal of the neighboring cell.
  • the network device of the cell to which the terminal device belongs acquires a configuration message of a common signal of a neighboring cell sent by the network device of the neighboring cell, and then the network device of the cell to which the terminal device belongs sends the public signal of the neighboring cell to the terminal device.
  • Configuration message the network device of the cell to which the terminal device belongs acquires a configuration message of a common signal of a neighboring cell sent by the network device of the neighboring cell, and then the network device of the cell to which the terminal device belongs sends the public signal of the neighboring cell to the terminal device.
  • the terminal device may periodically receive the public signal according to the configuration information of the common signal according to the time-frequency resource information of the indicated common signal, and after receiving the received signal including the common signal, the terminal device receives the received signal.
  • the received signal is processed to obtain characteristic information of the common signal for the time period.
  • the feature information of the common signal includes, but is not limited to, one or more of soft bit information of a common signal, bit information of a common signal, RE symbol information of a common signal, and statistical characteristic information of a common signal.
  • the RE symbol information of the common signal may include a QAM symbol and a subcarrier spacing of the common signal.
  • the bit information of the common signal may be that the terminal device performs sampling processing on the received signal and Fourier transform to obtain a QAM symbol, and then demodulates the QAM symbol to obtain soft bit information, and further determines the soft bit information. Processing, obtaining bit information of a common signal transmitted in the time period.
  • the soft bit information of the common signal may be that the terminal device performs sampling processing on the received signal and Fourier transform to obtain a QAM symbol, and then demodulates the QAM symbol to obtain a soft bit of the common signal transmitted in the time period. information.
  • the statistical characteristic information of the public signal may be that the terminal device calculates a statistical feature value of the received signal, thereby obtaining statistical feature information of the common signal sent in the time period, and the statistical feature value may be a variance, a standard deviation, or the like.
  • the terminal device may extract the feature information of the common signal included in the received signal when the received signal does not include the interference of the service data, so as to be more accurate. Obtaining the characteristic information of the common signal can improve the accuracy of the interference cancellation in the process of subsequently performing the interference cancellation processing on the common signal as the interference signal.
  • the terminal device determines, according to the scheduling information of the service data and the configuration information of the common signal, that the service data and the public signal have co-channel interference;
  • the terminal device can determine the time-frequency resource where the public signal is located by using the acquired configuration information of the common signal, and the terminal device can determine the time-frequency resource where the service data is located according to the scheduling information of the service data, and further determine the public. Whether the time-frequency resource where the signal is located and the time-frequency resource where the service data is located overlap to determine whether the service data and the common signal have co-channel interference. If there is overlap between the time-frequency resource where the public signal is located and the time-frequency resource where the service data is located, it is determined that the common signal and the service data have the same-frequency interference. Since the service data is a signal that the terminal device needs to receive, the public signal constitutes a pair of services. The data produces interfering signals with co-channel interference.
  • the method for determining, by the terminal device, whether the common signal and the service data have the same-frequency interference is that the terminal device determines whether the network device evades the time-frequency resource occupied by the public signal when transmitting the service data, that is, There is no service data transmission on the time-frequency resources occupied by the public signal. If the network device is not circumvented, there may be co-channel interference between the public signal service data, and the time-frequency resource and the public signal according to the service data are required. Whether there are overlapping time-frequency resources to determine whether there is co-channel interference between the public signal and the service data. If the network device is circumvented, the common signal and the service data will not have the same-frequency interference.
  • the service data that the terminal device needs to receive may be the service data that is sent by the network device in the current time period, and the terminal device may determine, according to the time-frequency resource information of the public signal of the current time period and the time-frequency resource information of the service data. Whether there is co-channel interference in the public signal and service data of the current time period.
  • the terminal device performs interference cancellation processing according to historical feature information of the common signal.
  • the terminal device when it is determined that the common signal and the service data have co-channel interference, performs interference cancellation processing according to historical feature information of the common signal.
  • the historical feature information of the common signal may be feature information of a common signal sent in a historical time period, and the historical time period may be one or more time periods before the current time period.
  • the common signal and the service data of the current time period have co-channel interference. Since the common signals sent in each time period are basically the same, the same-time interference of the current time period of the characteristic information of the common signal of the historical time period can be used. Perform interference cancellation processing. The feature information of the common signal of the historical time period is extracted from the received signal of the common signal including the historical time period, and the same frequency interference does not exist in the received signal. For the specific extraction method, refer to the description of step S102. This will not be repeated here.
  • the historical feature information of the common signal includes any one or more of bit information, soft bit information, and RE symbol information of a common signal transmitted in a historical time period
  • the terminal device may be historical feature information according to the common signal. Reconstructing a reconstructed signal corresponding to the common signal, and performing interference cancellation processing according to the reconstructed signal. For example, the terminal device receives the mixed signal in the time-frequency resource where the service data is located, where the mixed signal includes the service data and the common signal, and the terminal device subtracts the reconstructed signal from the mixed signal, thereby achieving the purpose of the interference cancellation process.
  • the historical feature information of the public signal includes statistical feature information of the common information sent by the historical time period
  • the terminal device may use the statistical feature information as an interference characteristic input factor of the IRC algorithm, and perform an interference cancellation process by using an IRC algorithm.
  • the historical feature information of the common signal is used for interference cancellation processing, and complex calculation is not required in the interference cancellation processing process, so that the service can be obtained more accurately.
  • the data has the interference characteristics of the common signal with the same frequency interference, reduces the complexity of the interference cancellation processing, and can achieve a relatively accurate interference cancellation effect.
  • FIG. 4 is a schematic flowchart of another signal processing method according to an embodiment of the present invention.
  • the signal processing method in the embodiment of the present invention is a refinement of the signal processing method provided in FIG. 3, as shown in FIG.
  • the signal processing method of the embodiment of the invention includes but is not limited to the following steps:
  • the terminal device receives scheduling signaling of service data, where the scheduling signaling includes scheduling information of service data.
  • step S201 of the embodiment of the present invention refer to step S101 of the embodiment of FIG. 3, and details are not described herein again.
  • the terminal device receives a configuration message of a common signal, where the configuration message includes configuration information of the common signal, where the public signal is a periodically sent signal.
  • the public signal may include an SSB or an RMSI, etc., which is not limited by the embodiment of the present invention.
  • the target signal as the SSB as an example.
  • the multiple access mode adopts a mode similar to LTE, and the downlink uses Orthogonal Frequency Division Multiple Access (OFDMA) and the uplink uses Single Carrier Frequency Division Multiple Access (Single-carrier Frequency- Division Multiple Access (SC-FDMA) and OFDMA.
  • OFDMA Orthogonal Frequency Division Multiple Access
  • SC-FDMA Single Carrier Frequency- Division Multiple Access
  • OFDMA OFDMA
  • the NR system can be deployed on the 3GHz-6GHz and 20G-40GHz bands in addition to the frequency band below 3GHz.
  • the NR standard determines that the cell will perform two different modes: multi-beam (multi-beam) and single-beam (single beam).
  • Multi-beam divides a cell/sector into multiple coverage areas by using multi-antenna beamforming technology.
  • Each coverage area is covered by a synchronization signal and a broadcast signal, and the synchronization signal is carried on the NR system.
  • the information block of the broadcast signal is called an SSB, and one coverage area corresponds to one SSB.
  • the coverage area is referred to as an SSB coverage area.
  • the SSB content in the embodiment of the present invention may include a Primary Synchronization Signal (PSS), a Secondary Synchronization Signal (SSS), a Physical Broadcast Channel (PBCH) signal, and a dedicated demodulation on the PBCH.
  • DMRS Demodulation Reference Signal
  • the single-beam is that the coverage mode of the cell/sector is omnidirectional coverage, that is, only one beam coverage is used for one cell/sector, and only one SSB is corresponding, that is, one SSB coverage area exists.
  • each SSB coverage area there are up to 8 SSB coverage areas for deployment scenarios below 6 GHz (sub-6G).
  • sub-6G For millimeter wave (higher than 6 GHz) deployment scenarios, there are up to 64 SSB coverage areas, each SSB coverage area.
  • each SSB coverage area Corresponds to an SSB.
  • Figure 5a the coverage of the coverage area of the four SSBs in the sub-6G deployment scenario is shown in Figure 5b, which is the coverage of the coverage area of the eight SSBs in the millimeter wave deployment scenario.
  • the SSBs corresponding to each SSB coverage area in a cell may be sent in a time division manner, that is, the SSBs of different coverage areas occupy different slots or different OFDM symbols in the same slot, and target one coverage area.
  • the SSB, the SSB of the coverage area is cyclically transmitted in a certain period of time, and the SSB content of each time period is fixed and basically the same.
  • FIG. 6 it is a schematic diagram of SSB transmission of three different cells. As shown in the figure, the number of SSB transmissions of cell cell 0 and cell cell 1 is the same as the time period of transmission, and the number of transmissions of cell cell 2 and cell cell 0 and cell cell 1 are The sending time period is different.
  • the SSB of the coverage area is sent according to a certain time period, and the content is substantially the same, for example, the SSB0 of the second time period is the same as the SSB0 of the first time period, and the implementation of the present invention is implemented.
  • the SSB0 received in the historical time period of the terminal device is used to perform interference cancellation processing on the SSB0 that generates the same-frequency interference in the current data period, and the interference cancellation processing method has low complexity and high accuracy.
  • the terminal device can obtain the broadcast message or the radio resource control (RRC) signaling of the upper layer, and the broadcast message is as follows: System Information Block (System Information) Blocks, SIB1) messages, high-level RRC signaling such as: Physical Broadcast Channel (PBCH) or RMSI.
  • the configuration information of the SSB includes the number of SSBs actually sent by the network device of the cell, the time-frequency resource information of the SSB, the time period of transmitting the SSB, the sub-carrier spacing, the transmission format (modulation and coding format), and the like.
  • the terminal device can obtain not only the configuration information of the SSB of the cell to which the terminal device belongs, but also the configuration information of the SSB of the cell adjacent to the cell to which the terminal device belongs.
  • the terminal device searches for the SSBs in all search windows, and performs blind detection through the Primary Synchronization Signal (PSS) and the Secondary Synchronization Signal (SSS) in the SSB.
  • PSS Primary Synchronization Signal
  • SSS Secondary Synchronization Signal
  • Calculating the cell ID of the SSB (the cell ID is used to identify the SSB of the cell, that is, the SSB of the cell to which the terminal device belongs, or the SSB of the cell neighboring cell to which the terminal device belongs), and then the terminal device searches for the corresponding cell ID.
  • the terminal device parses the Master Information Block (MIB) message of the cell, and performs parsing of other broadcast messages (ie, configuration messages of the common signal) through the MIB message, and finally determines the network through the configuration message of the public signal.
  • MIB Master Information Block
  • each SSB includes four time-domain adjacent symbols, that is, PSS-PBCH-SSS-PBCH.
  • PSS-PBCH-SSS-PBCH there may be a difference in transmission power between the PSS and the SSS, that is, the transmission power of the network device may be different when the PSS and the SSS are sent.
  • the configuration information of the public signal may further include a transmission power of the PSS and the SSS in the SSB.
  • the terminal device determines, according to the scheduling information of the service data and the configuration information of the common signal, that the service data and the public signal have co-channel interference;
  • step S103 of the embodiment of FIG. 3 For the steps of the embodiment of the present invention, refer to step S103 of the embodiment of FIG. 3, and details are not described herein again.
  • the terminal device acquires a signal energy intensity of a received signal that includes the common signal received in a historical time period.
  • the public signal is periodically sent by the network device, and before the terminal device determines that the common signal and the service data of the current time period have co-channel interference, the terminal device receives the information sent by the network device during the historical time period.
  • the terminal device acquires the signal energy intensity of the received signal including the common signal received in the historical time period.
  • the terminal device determines that the signal energy strength is less than a target threshold, the terminal device performs interference cancellation processing according to the historical feature information of the common signal.
  • the terminal device stores a minimum threshold threshold (eg, low_threshold) and a highest threshold threshold (such as high_threshold). If the signal energy strength of the received signal including the common signal received in the historical time period is less than the lowest threshold threshold, the current The same-frequency interference of the time period is not strong, and the interference cancellation processing is not performed. If the signal energy intensity of the received signal including the common signal received in the historical time period is greater than the lowest threshold threshold and less than the highest threshold threshold, the interference cancellation processing may be performed according to the historical characteristic information of the common signal.
  • a minimum threshold threshold eg, low_threshold
  • a highest threshold threshold such as high_threshold
  • the signal energy intensity of the received signal including the common signal received in the historical time period is greater than the highest threshold threshold, it indicates that the same-frequency interference of the current time period is particularly strong, and the time-frequency resources and service data of the common signal in the current time period are required.
  • the overlapping time-frequency resources may be overlapping RE resources, and signals carried on overlapping RE resources are not deleted. delete.
  • the highest threshold threshold is the target threshold of the embodiment of the present invention. In this way, erroneous diffusion can be avoided and errors in subsequent modulation and demodulation processes can be reduced.
  • the terminal device When the terminal device performs interference cancellation processing according to historical feature information of the common signal, different feature information and interference cancellation processing are different.
  • the feature information includes the statistical feature information of the common signal sent by the historical time period
  • the terminal device may use the interference suppression algorithm to perform the interference cancellation process, and the terminal device uses the statistical feature information as the interference characteristic input factor of the interference suppression algorithm, thereby
  • the common signal in the mixed signal including the service data and the common signal is subjected to suppression processing, and the interference suppression algorithm may be an Interference Rejection Combining (IRC) algorithm.
  • IRC Interference Rejection Combining
  • FIG. 8 it is a schematic diagram of a module structure of an IRC algorithm provided by an embodiment of the present invention.
  • y is a mixed signal (to be demodulated) acquired by a terminal device, and the mixed signal includes The signal X transmitted by the network device whose channel is H, and the interference signal U (shown by the following formula), where X may be service data, and the interference signal U may include SSB:
  • the statistical feature information of the SSB sent in the stored historical time period is input as an interference characteristic input factor into the IRC module for calculation.
  • the statistical feature information may include the mean and the variance, and the IRC module performs the Cholesky using the statistical feature information of the input SSB and the channel estimate H. Decomposition and other related operations, so that the interference signal SSB is whitened.
  • the network device does not send the service data on the RE resource that sends the SSB, and the SSB and the service data
  • the network device does not send the service data on the RE resource that sends the SSB
  • the SSB and the service data There is no co-channel interference, but there may be interference of the service data of the neighboring cell.
  • the statistical feature information of the SSB of the neighboring cell may be extended to the time-frequency resource where the service data is located for interference. The processing is eliminated, thereby eliminating interference of traffic data of neighboring cells.
  • FIG. 9 it is another schematic diagram of an IRC algorithm provided by an embodiment of the present invention.
  • y is equivalent to a received mixed signal (to be demodulated), and the mixed signal includes sending through a network device whose channel is H.
  • the signal X, and the interference signal U (shown by the following formula), X may be the service data of the cell to which the terminal device belongs, and the U may be the service data of the neighboring cell:
  • the statistical feature information of the SSB sent by the historical time period of the neighboring cell is modified and extended to the time-frequency resource where the service data (such as the PDSCH) is located, for example, the interference correction can be performed by the Ruu matrix of the interference autocorrelation matrix estimation value.
  • the IRC module performs Cholesky decomposition and other correlation operations using the input corrected statistical feature information, thereby whitening the interference signal.
  • the feature information includes any one or more of soft bit information, bit information, and RE symbol information of a common signal transmitted in a historical time period. Then, the terminal device may reconstruct the reconstructed signal corresponding to the common signal according to the feature information, and then separate the same signal from the reconstructed reconstructed signal from the received mixed signal.
  • the feature information includes bit information (channel-encoded bit information) of the common signal transmitted in the historical time period
  • the reconstruction process is: obtaining Quadrature Amplitude Modulation (QAM) symbols according to the bit information and the modulation and coding format. And reconstructing, according to the QAM symbol and the subcarrier spacing, a reconstructed signal corresponding to the common signal, where the reconstructed signal is an interference signal in the mixed signal.
  • QAM Quadrature Amplitude Modulation
  • the feature information includes soft bit information of a common signal transmitted in a historical time period
  • the reconstruction process is: obtaining a QAM symbol according to the soft bit information and the modulation and coding format; and reconstructing the common signal according to the QAM symbol and the subcarrier spacing.
  • the reconstructed signal is an interference signal in the mixed signal.
  • the feature information includes RE symbol information of a common signal transmitted in a historical time period, and the RE symbol information includes a QAM symbol and a subcarrier interval, so that the reconstructed signal corresponding to the common signal can be reconstructed directly according to the RE symbol information.
  • the signal is the interference signal in the mixed signal.
  • FIG. 10 it is a schematic diagram of a reconstruction process according to an embodiment of the present invention.
  • the common signal is SSB as an example, and the soft bit information of the SSB sent in the historical time period is interfered by the interference cancellation module. Therefore, the interference signal is reconstructed, and the received mixed signal Y is interfered with the reconstructed interference signal, and finally the interference canceled signal is demodulated and decoded by the demodulation decoding module.
  • the receiving beam direction of the receiving service data of the terminal device may be different from the receiving beam direction of the receiving SSB signal in the historical time period, for example, when the terminal device receives the SSB of the coverage area except the SSB coverage area where the terminal device is located.
  • the beam direction is different from the receive beam direction in which the terminal device receives the service data.
  • the receiving beam direction of the receiving service data of the terminal device is different from the receiving beam direction of the receiving SSB signal in the historical time period, before the interference cancellation processing is performed on the common signal included in the mixed signal according to the characteristic information of the SSB signal received according to the historical time period It is necessary to use the correlation characteristics of two different receiving beam directions to perform conversion, such as conversion of signal power statistical information, conversion of semaphore of RE symbol, and the like.
  • the statistical feature information of the PSS and the SSS may be separately calculated, thereby obtaining The plurality of statistical feature information is further subjected to interference cancellation processing according to the plurality of statistical feature information. Or combining the statistical feature information of the PSS and the SSS to form a statistical feature information, and using the statistical feature information to perform interference cancellation processing. If the interference cancellation process is to perform interference reconstruction using bit information, soft bit information, and RE symbol information of the SSB of the historical time period, interference reconstruction may be performed separately according to the transmission power when transmitting the PSS and the SSS.
  • the interference cancellation processing may be performed as follows:
  • the IRC algorithm is then used to further suppress interference.
  • the IRC algorithm reduces the influence of the interference signal on the demodulation of the data channel performance of the terminal device by estimating the statistical characteristics of the interference signal and whitening the interference signal.
  • the channel model can be expressed as
  • Ruu can be calculated using all pilot points in the region.
  • y k and H k are the received signal and the equivalent channel matrix corresponding to the kth pilot in the region, p k is the kth pilot symbol, and L p is the number of pilot points.
  • Ruu can also be calculated using all pilot points and data points.
  • y i and H i are the received signal and the equivalent channel matrix corresponding to the i-th RE (which may be a pilot point or a data point) in the region
  • x i is the transmitted symbol of the i-th RE point
  • L d is the number of data points.
  • the Ruu calculated above is used as the interference characteristic input factor of the IRC algorithm, and the IRC algorithm is used for interference cancellation processing.
  • the terminal device determines that the signal energy strength is greater than the target threshold, the terminal device deletes a signal carried by a time-frequency resource in which the time-frequency resource where the public signal is located and the time-frequency resource where the service data is located overlaps.
  • the terminal device deletes the signal carried by the overlapping time-frequency resources from the mixed signal, that is, the signal carried by the overlapping time-frequency resources does not participate in the demodulation process of the signal.
  • the terminal device demodulates and decodes the signal after the interference cancellation processing in step S205 and the signal after the deletion processing in step S206.
  • this step may also perform other interference processing, such as SIC Successive Interference Cancellation processing and/or PIC Parallel Interference Cancellation. deal with.
  • the terminal device sends feedback information to the network device, where the feedback information is used to assist the network device according to the time-frequency resource pair sending the public signal.
  • the time-frequency resource of the service data performs resource non-overlapping mapping, so that the service data is not transmitted on the time-frequency resource that sends the public signal.
  • the terminal device demodulates and decodes the signal after the interference cancellation processing and/or the deleted signal. If the signal is not successfully demodulated and decoded, the network device needs to optimize the resource mapping manner.
  • the device sends feedback information to the network device, where the feedback information may be the demodulation and decoding result information of the current scheduling, or the interference strength of the public signal, or the Cyclic Redundancy Check (CRC) of the service data corresponding to the partitioning block.
  • CRC Cyclic Redundancy Check
  • the network device may perform resource non-overlapping mapping according to the feedback information, that is, the service data is not transmitted on the time-frequency resource for transmitting the common signal, so that the terminal does not include the acquired signal when receiving the service data.
  • the common signal is such an interference signal, thereby improving the success rate of demodulation decoding.
  • FIG. 11 is a schematic diagram of SSB interference cancellation according to an embodiment of the present invention. As shown in the figure, the embodiment of the present invention uses the target signal as an SSB as an example:
  • the cell is synchronized, the terminal device parses and stores the SSB, and the PSS and the SSS in the SSB are blindly checked to obtain the cell ID corresponding to the SSB.
  • the terminal device receives other broadcast information of the cell, such as an RMSI, and acquires an SSB sending location of the cell and/or the neighboring cell to which the terminal device belongs, where the SSB sending location includes a time domain resource and a frequency domain resource where the SSB is located.
  • other broadcast information of the cell such as an RMSI
  • the terminal device receives the SSB signal according to the SSB sending location, and stores feature information of the SSB signal, such as bit information, soft bit information, statistical feature information (variance, standard deviation), and RE symbol information, and the like;
  • the terminal device monitors the PDDCH channel, and acquires scheduling signaling of the service data, where the scheduling signaling is used to indicate that the terminal device receives the service data and the time-frequency resource where the service data is located;
  • the terminal device may determine, according to the time-frequency resource where the SSB sends the location and the service data, whether the SSB interference exists.
  • step S305 if it is determined that there is SSB interference, further determine whether the signal energy intensity of the received signal including the SSB received in the historical time period is less than the target threshold; if less than the target threshold, step S306 is performed, if it is greater than the target threshold, step S307 is performed;
  • the interference cancellation is performed by using the feature information of the SSB in the stored historical time period.
  • the specific elimination manner refer to the descriptions of the embodiments in FIG. 3 and FIG. 4, and details are not described herein again.
  • FIG. 12 is a schematic structural diagram of a signal processing apparatus according to an embodiment of the present invention.
  • the signal processing apparatus may be a terminal device, or may be a chip or a circuit, such as a chip or a circuit that can be disposed in a terminal device.
  • the terminal device may correspond to the terminal device 1 or the terminal device 2 in the above system.
  • the signal processing apparatus of the embodiment of the present invention includes a receiving unit 10 and a processing unit 11.
  • the antenna and control circuit having the receiving function can be regarded as the receiving unit 10 of the signal processing device
  • the processor having the processing function can be regarded as the processing unit 11 of the signal processing device.
  • the signal processing apparatus includes a receiving unit 10 and a processing unit 111.
  • the receiving unit may also be referred to as a receiver, a receiver, a receiving device, or the like.
  • the function of the receiving unit 10 can be implemented by using a transceiver circuit, or a dedicated chip for transceiving, or a transceiving communication interface, a receiver, and the like.
  • the processing unit 11 can be implemented by a dedicated processing chip, a processing circuit, a processor or a general purpose chip.
  • the processor may include a baseband processor and a central processing unit.
  • the baseband processor is mainly used to process communication protocols and communication data
  • the central processing unit mainly uses Control the entire terminal device, execute software programs, and process data from the software program.
  • the processing unit 11 in FIG. 12 integrates the functions of the baseband processor and the central processing unit. It will be understood by those skilled in the art that the baseband processor and the central processing unit may also be independent processors and interconnected by a bus or the like.
  • the terminal device may include a plurality of baseband processors to accommodate different network standards, and the terminal device may include a plurality of central processors to enhance its processing capabilities, and various components of the terminal devices may be connected through various buses.
  • the baseband processor can also be expressed as a baseband processing circuit or a baseband processing chip.
  • the central processing unit can also be expressed as a central processing circuit or a central processing chip.
  • the functions of processing the communication protocol and the communication data may be built in the processor, or may be stored in the storage unit in the form of a software program, and the processor executes the software program to implement the baseband processing function.
  • the receiving unit 10 is configured to receive scheduling signaling of the service data, where the scheduling signaling includes scheduling information of the service data.
  • the receiving unit 10 is further configured to receive a configuration message of a common signal, where the configuration message includes configuration information of the common signal, where the public signal is a periodically transmitted signal;
  • the processing unit 11 is configured to determine, according to the scheduling information of the service data and the configuration information of the common signal, that the service data and the public signal have co-channel interference;
  • the processing unit 11 is further configured to perform interference cancellation processing according to historical feature information of the common signal.
  • the configuration information includes configuration information of a common signal of a cell neighboring cell to which the terminal device belongs
  • the scheduling signaling of the service data includes scheduling signaling of service data of a cell to which the terminal device belongs.
  • the configuration information includes configuration information of a common signal of a cell to which the terminal device belongs
  • the scheduling signaling of the service data includes scheduling signaling of service data of a cell to which the terminal device belongs.
  • the scheduling information of the service data includes time-frequency resource information of the service data
  • the configuration information of the common signal includes time-frequency resource information of the public signal.
  • the processing unit 11 is specifically configured to determine, according to the time-frequency resource information of the service data and the time-frequency resource information of the common signal, that the service data and the common signal sent in the current time period have co-channel interference.
  • the historical feature information of the common signal includes feature information of the common signal sent in a historical time period; and the feature information of the common signal sent in the historical time period is a received signal from the historical time period. Extracted, the received signal includes the common signal sent in the historical time period.
  • the feature information includes bit information of the public signal sent in the historical time period
  • the processing unit 11 is further configured to perform sampling processing on the received signal to obtain a quadrature amplitude modulation QAM symbol;
  • the processing unit 11 is further configured to perform demodulation processing on the QAM symbol to obtain soft bit information.
  • the processing unit 11 is further configured to perform a decision process on the soft bit information to obtain bit information of the common signal sent in the historical time period.
  • the feature information includes soft bit information of the common signal sent in the historical time period
  • the processing unit 11 is further configured to perform sampling processing on the received signal to obtain a quadrature amplitude modulation QAM symbol;
  • the processing unit 11 is further configured to perform demodulation processing on the QAM symbol to obtain soft bit information of the common signal sent in the historical time period.
  • the feature information includes statistical feature information of the public signal sent by the historical time period
  • the processing unit 11 is further configured to calculate a statistical feature value of the received signal, and obtain statistical feature information of the common signal sent by the historical time period.
  • the processing unit 11 is specifically configured to construct a reconstructed signal corresponding to the common signal according to historical feature information of the common signal, and perform interference cancellation processing according to the reconstructed signal.
  • the common signal comprises a synchronization signal block SSB.
  • the size of the serial numbers of the above processes does not mean the order of execution, and the order of execution of each process should be determined by its function and internal logic, and should not be taken to the embodiments of the present invention.
  • the implementation process constitutes any limitation.
  • the disclosed systems, devices, and methods may be implemented in other manners.
  • the device embodiments described above are merely illustrative.
  • the division of the unit is only a logical function division.
  • there may be another division manner for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not executed.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.
  • each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the above embodiments it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof.
  • software it may be implemented in whole or in part in the form of a computer program product.
  • the computer program product includes one or more computer instructions.
  • the computer program instructions When the computer program instructions are loaded and executed on a computer, the processes or functions described in accordance with embodiments of the present invention are generated in whole or in part.
  • the computer can be a general purpose computer, a special purpose computer, a computer network, or other programmable device.
  • the computer instructions can be stored in a computer readable storage medium or transferred from one computer readable storage medium to another computer readable storage medium, for example, the computer instructions can be from a website site, computer, server or data center Transfer to another website site, computer, server, or data center by wire (eg, coaxial cable, fiber optic, digital subscriber line (DSL), or wireless (eg, infrared, wireless, microwave, etc.).
  • the computer readable storage medium can be any available media that can be accessed by a computer or a data storage device such as a server, data center, or the like that includes one or more available media.
  • the usable medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a DVD), or a semiconductor medium (such as a solid state disk (SSD)).

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Abstract

本发明实施例提供一种信号处理方法及装置，其中，信号处理方法包括：终端设备接收业务数据的调度信令，所述调度信令包含业务数据的调度信息；所述终端设备接收公共信号的配置消息，所述配置消息包含所述公共信号的配置信息，所述公共信号为周期性发送的信号；所述终端设备根据所述业务数据的调度信息和所述公共信号的配置信息，确定所述业务数据和所述公共信号存在同频干扰；所述终端设备根据所述公共信号的历史特征信息进行干扰消除处理。采用本发明实施例能够减少干扰消除处理的复杂度，和/或，提升干扰消除的准确性。

Description

信号处理方法及装置 技术领域
本发明涉及网络技术领域，尤其涉及一种信号处理方法及装置。
背景技术
网络设备通常除了发送业务数据外，还会发送其他公共信号，比如同步信号块(Synchro signal block，SSB)，剩余系统广播信息(remain system information，RMSI)等等。如果终端设备需要接收的是业务数据，该其他公共信号如果和该业务数据占用的是相同的时频资源，则该其他公共信号构成对业务数据的干扰信号。例如，网络设备在一个SSB覆盖区域内向终端设备发送业务数据，同时该网络设备在另一个SSB覆盖区域发送SSB信号，且发送业务数据的时频资源和SSB信号的时频资源相同，该终端设备在接收业务数据的同时，也会接收到该另一个SSB覆盖区域的SSB信号，即会存在业务数据和SSB信号的同频干扰问题，同频干扰的会降低业务数据信道的解调性能。目前领域内，进行同频干扰消除的方式是，直接对终端设备所接收的接收信号进行复杂的迭代计算，从而对干扰信号进行重构，这种方式需要消耗计算资源，且带来算法上的复杂度，并且重构的干扰信号也不够准确。
发明内容
本发明实施例提供一种信号处理方法及装置，能够减少干扰消除处理的复杂度，和/或，提升干扰消除的准确性。
第一方面，本发明实施例提供一种信号处理方法，该方法包括：终端设备接收业务数据的调度信令，该调度信令包含业务数据的调度信息，业务数据的调度信息可以包括该业务数据所在的时域资源、频域资源等等。
该终端设备接收公共信号的配置消息，该配置消息包含公共信号的配置信息，公共信号为周期性发送的信号，公共信号的配置信息可以包括公共信号的发送时间周期、公共信号所在的时域资源以及公共信号所在的频域资源等等。
终端设备根据业务数据的调度信息和公共信号的配置信息，确定业务数据和公共信号存在同频干扰，即业务数据所在的时频资源和公共信号所在的时频资源存在重叠。
终端设备根据公共信号的历史特征信息进行干扰消除处理。
通过第一方面提供的技术方案，在业务数据和公共信号存在同频干扰时，利用该公共信号的历史特征信息进行干扰消除处理，在干扰消除处理过程中不需要复杂的计算，即可较为精确的得到对业务数据存在同频干扰的公共信号的干扰特征，减少了干扰消除处理的复杂度，并且能够达到比较准确的干扰消除效果。
在一种可能的设计中，上述配置信息可以包括终端设备所属小区相邻小区的公共信号的配置信息，调度信息可以包括终端设备所属小区的业务数据的调度信息。
采用这种方式，可以消除终端设备所属小区相邻小区的公共信号对该终端设备所属小区的业务数据的同频干扰。
在一种可能的设计中，上述配置信息可以包括终端设备所属小区的公共信号的配置信息，上述调度信息可以包括终端设备所属小区的业务数据的调度信息。
采用这种方式，可以消除终端设备所属小区的公共信号对该终端设备所属小区的业务数据的同频干扰。
在一种可能的设计中，业务数据的调度信息包括业务数据的时频资源信息，公共信号的配置信息包括公共信号的时频资源信息。本发明实施例将业务数据所在的时域资源信息和频域资源信息统称为时频资源信息，公共信号的时频资源信息包括周期性发送的公共信号中每个时间周期的公共信号所在的时域资源信息和频域资源信息，需要说明的是，指示周期性发送的公共信号的时频资源信息的指示方式可以有多种：
可选的，配置信息可以指示该公共信号的发送时间周期、时间偏移量以及频域资源信息等等，其中，时间偏移量即指在一个时间周期内距离该时间周期的起点之间的偏移量，比如，时间周期是20ms，则时间偏移量可以是3ms，即该公共信号在每个20ms周期的3ms发送。其中，配置信息是否需要指示时间周期的起始时间可以根据具体情况确定，比如，若该公共信号是由终端设备自己检测到的，该公共信号的时间周期的起始时间信息由终端设备检测到该SSB的时间确定，以公共信号为SSB为举例，终端设备在所有搜索窗内搜索SSB，通过盲检主同步信号(Primary Synchronization Signal，PSS)和辅同步信号(Secondary Synchronization Signal，SSS)，得到该SSB对应的小区ID，后续继续接收该小区的SSB，该周期性发送的SSB是由终端自己检测到的，因此终端设备可以获知时间周期的起始时间，配置信息不需要指示起始时间。若该公共信号不是由终端设备自己检测到的，则需要通过信令配置该公共信号的时间周期的起始时间，或者公共信号的配置信息中指示该起始时间。
可选的，配置信息可以直接指示每个时间周期内公共信号所在的时域资源信息和频域资源信息。
终端设备在确定业务数据和公共信号是否存在同频干扰的确定方式可以是，根据所述业务数据的时频资源信息和所述公共信号的时频资源信息，确定所述业务数据和当前时间周期发送的所述公共信号存在同频干扰。比如，业务数据所在的时频资源与当前时间周期发送的公共信号所在的时频资源存在重叠的时频资源，则确定业务数据和当前时间周期发送的公共信号存在同频干扰。
采用这种方式，能够精确的确定业务数据和当前时间周期发送的公共信号存在同频干扰的资源，从而对存在同频干扰的资源所承载的信号进行干扰消除处理，提高干扰消除处理的效率和准确性。
在一种可能的设计中，公共信号的历史特征信息可以包括历史时间周期发送的公共信号的特征信息，可选的，可以是一个历史时间周期或者多个历史时间周期发送的公共信号的特征信息。
其中，历史时间周期发送的公共信号的特征信息为从该历史时间周期的接收信号中提取的，该接收信号即是该终端设备在该历史时间周期所接收的信号，接收信号中包含该历史时间周期发送的公共信号，但是该接收信号不包含业务数据。
采用这种方式，可以通过历史时间周期的接收信号提取到该历史时间周期发送的公共信号的特征信息，从而准确估计当前时间周期的公共信号的干扰特征，提高干扰消除的准 确性。
在一种可能的设计中，上述特征信息可以包括该历史时间周期发送的公共信号的比特信息，终端设备获取该比特信息的获取方式可以是，对该历史时间周期的接收信号进行采样处理，获得正交振幅调制(Quadrature Amplitude Modulation，QAM)符号，然后对QAM符号进行解调处理，获得软比特信息，终端设备再对该软比特信息进行判决处理，获得该历史时间周期发送的公共信号的比特信息。后续可以通过比特信息和调制编码格式，得到QAM符号，再根据QAM符号和子载波间隔重构出干扰信号，从而进行干扰消除处理。
采用这种方式，可以通过历史时间周期发送的公共信号的比特信息对当前时间周期存在同频干扰的公共信号进行干扰消除处理，提高干扰消除的准确性。
在一种可能的设计中，特征信息可以包括历史时间周期发送的公共信号的软比特信息，终端设备获取软比特信息的获取方式可以是，对接收信号进行采样处理，获得QAM符号，然后对QAM符号进行解调处理，获得该历史时间周期发送的公共信号的软比特信息。后续可以通过软比特信息得到比特信息，再通过比特信息和调制编码格式，得到QAM符号，最后根据QAM符号和子载波间隔重构出干扰信号，从而进行干扰消除处理。
采样这种方式，可以通过历史时间周期发送的公共信号的软比特信息对当前时间周期存在同频干扰的公共信号进行干扰消除处理，提高干扰消除的准确性。
在一种可能的设计中，特征信息可以包括历史时间周期发送的公共信号的统计特征信息，终端设备获取该统计特征信息的获取方式可以是，计算该接收信号的统计特征值，从而获得该历史时间周期发送的公共信号的统计特征信息。
采用这种方式，不需要对接收信号进行解调处理，直接通过接收信号的统计特征值，即可进行干扰消除处理，效率高。
在一种可能的设计中，特征信息可以包括资源粒子(Resource Elements，RE)符号信息，该RE符号信息可以包括QAM符号以及子载波间隔。QAM符号可以是终端设备对接收信号进行采样处理得到的。后续可以直接通过QAM符号和子载波间隔重构干扰信号，从而进行干扰消除处理。
采样这种方式，不需要对历史时间周期的接收信号进行解调处理，即可进行干扰消除处理，效率高，可以对一些无法进行解调处理的历史时间周期的接收信号，实现干扰信号的重构。
在一种可能的设计中，终端设备根据公共信号的历史特征信息进行干扰消除处理的处理方式可以是：根据公共信号的历史特征信息，构造与该公共信号对应的重构信号，从而根据该重构信号进行干扰消除处理。
其中，该公共信号的历史特征信息包括但不限于，历史时间周期的公共信号的比特信息、软比特信息以及RE符号信息等等。
采用上述方式，通过重构与公共信号对应的重构信号，可以提高干扰消除的准确性。
在一种可能的设计中，终端设备根据公共信号的历史特征信息进行干扰消除处理的处理方式可以是：将该公共信号的历史特征信息作为干扰抑制合并算法(Interference Rejection Combining,，IRC)的干扰特性输入因子，从而采用IRC算法进行干扰消除处理。
其中，该公共信号的历史特征信息包括历史时间周期的公共信号的统计特征信息，该 统计特征信息包括但不限于方差、标准差等等。
采用上述方式，将历史时间周期的公共信号的统计特征信息作为IRC算法的干扰特性输入因子，并通过IRC算法进行干扰消除处理，可以提高干扰消除的准确性，且效率较高。
在一种可能的设计中，终端设备在根据公共信号的历史特征信息进行干扰消除处理的过程中，可以首先判断该公共信号的信号能量强度，具体判断方式可以是计算包含历史时间周期的公共信号的接收信号的信号能量强度，若该信号能量强度小于预先设定的阈值，则根据公共信号的历史特征信息进行干扰消除处理。若该公共信号的信号能量强度大于预先设定的阈值，则说明干扰太强，可以将业务数据所在的时频资源和当前时间周期的公共信号所在的时频资源之间重叠的时频资源所承载的信号进行删除。
采用上述方式，可以剔除一些干扰过强的信号，防止错误扩散。
在一种可能的设计中，公共信号可以包括SSB或者RMSI。
第二方面，本发明实施例提供一种信号处理装置，该信号处理装置具有实现上述第一方面方法中终端设备行为的功能。所述功能可以通过硬件实现，也可以通过硬件执行相应的软件实现。所述硬件或软件包括一个或多个与上述功能相对应的模块或者单元。
一种可能的设计中，所述信号处理装置包括接收单元和处理单元，接收单元，用于接收信号或者信息，处理单元用于对接收单元所接收的信号或者信息进行处理。比如，接收单元，用于接收业务数据的调度信令，所述调度信令包含业务数据的调度信息；所述接收单元还用于接收公共信号的配置消息，所述配置消息包含所述公共信号的配置信息，所述公共信号为周期性发送的信号；处理单元，用于根据所述业务数据的调度信息和所述公共信号的配置信息，确定所述业务数据和所述公共信号存在同频干扰；所述处理单元还用于根据所述公共信号的历史特征信息进行干扰消除处理。
另一种可能的实现方式中，所述信号处理装置包括：收发器、存储器和处理器；其中，收发器用于接收信号或者发送信号。存储器中存储一组程序代码，且处理器用于调用存储器中存储的程序代码执行第一方面以及结合上述第一方面的任意一种实现方式所提供的信号处理方法。
又一种可能的实现方式中，所述信号处理装置包括处理器，所述处理器被配置为实现第一方面提供的信号处理方法的功能，该处理器可以与外设的存储器耦合。
第三方面，本发明实施例提供一种计算机存储介质，用于储存为上述第一方面提供的终端设备所用的计算机软件指令，其包含用于执行上述第一方面以及结合上述第一方面的任意一种实现方式所提供的信号处理方法所设计的程序。
第四方面，本发明实施例提供了一种计算机程序，该计算机程序包括指令，当该计算机程序被计算机执行时，使得计算机可以执行上述第一方面以及结合上述第一方面的任意一种实现方式所提供的信号处理方法的流程。
附图说明
为了更清楚地说明本发明实施例的技术方案，下面将对本发明实施例所需要使用的附图进行说明。
图1是本发明实施例提供的一种应用场景的示意图；
图2是本发明实施例提供的一种终端设备的结构示意图；
图3是本发明实施例提供的一种信号处理方法的流程示意图；
图4是本发明实施例提供的另一种信号处理方法的流程示意图；
图5a是本发明实施例提供的一种SSB覆盖区域的示意图；
图5b是本发明实施例提供的另一种SSB覆盖区域的示意图；
图6是本发明实施例提供的一种SSB发送周期示意图；
图7是本发明实施例提供的一种SSB的时频结构示意图；
图8是本发明实施例提供的一种IRC检测算法示意图；
图9是本发明实施例提供的另一种IRC检测算法示意图；
图10是本发明实施例提供的一种干扰信号重构示意图；
图11是本发明实施例提供的一种SSB信号处理示意图；
图12是本发明实施例提供的一种信号处理装置的结构示意图。
具体实施方式
下面结合本发明实施例中的附图对本发明实施例进行描述。
本发明实施例所提及的混合信号可以是当前时间周期内终端设备所接收的包含业务数据和公共信号的信号。
本发明实施例所提及的接收信号可以是历史时间周期内终端设备所接收的包含公共信号的信号。
本发明实施例所提及的公共信号的时频资源信息包括周期性发送的公共信号中每个时间周期的公共信号所在的时域资源信息和频域资源信息，其中，指示周期性发送的公共信号的时频资源信息的指示方式可以有多种。
本发明实施例可以适用于5G/新型接入网络(New Radio Access Network，NR)系统，也可以适用于其他无线通信系统，例如全球移动通信系统(Global System for Mobile Communication，GSM)，移动通信系统(Universal Mobile Telecommunications System，UMTS)，码分多址接入(Code Division Multiple Access，CDMA)系统，以及4G长期演进(Long Term Evolution，LTE)网络系统等。
其中，无线通信系统通常由小区组成，如图1所示，每个小区包含基站(Base Station，BS)，基站向多个终端设备提供通信服务，基站连接到核心网设备。其中，基站包含基带单元(Baseband Unit，BBU)和远端射频单元(Remote Radio Unit，RRU)。BBU和RRU可以放置在不同的地方，例如：RRU放置于离高话务量的开阔区域，BBU放置于中心机房。BBU和RRU也可以放置在同一机房。BBU和RRU也可以为一个机架下的不同部件。
本发明实施例所涉及的基站是一种部署在无线接入网中用以为终端设备提供无线通信功能的装置。所述基站可以包括各种形式的宏基站，微基站(也称为小站)，中继站，接入点，传输接入点(Transmission Receiver point，TRP)等。在采用不同的无线接入技术的系统中，具备基站功能的设备的名称可能会有所不同，例如，在LTE系统中，称为演进的节点B(evolved NodeB，eNB或者eNodeB),在第三代(3rd Generation，3G)系统中，称为节点B(Node B，NB)等，在5G系统中，基站被称为5G基站或NR NodeB。为方便描 述，本申请所有实施例中，上述为终端设备提供无线通信功能的装置统称为网络设备。
本发明实施例涉及的终端设备，可以是指向用户提供语音和/或数据连通性的设备，具有无线连接功能的手持式设备、或连接到无线调制解调器的其他处理设备。无线终端可以经无线接入网(Radio Access Network，RAN)与一个或多个核心网进行通信，无线终端可以是移动终端，如移动电话(或称为“蜂窝”电话)和具有移动终端的计算机，例如，可以是便携式、袖珍式、手持式、计算机内置的或者车载的移动装置，它们与无线接入网交换语言和/或数据。例如，个人通信业务(PCS，Personal Communication Service)电话、无绳电话、会话发起协议(SIP)话机、无线本地环路(WLL，Wireless Local Loop)站、个人数字助理(PDA，Personal Digital Assistant)等设备。无线终端也可以称为系统、订户单元(Subscriber Unit)、订户站(Subscriber Station)，移动站(Mobile Station)、移动台(Mobile)、远程站(Remote Station)、接入点(Access Point)、远程终端(Remote Terminal)、接入终端(Access Terminal)、用户终端(User Terminal)、用户代理(User Agent)、用户设备(User Device)、或用户装备(User Equipment)。为方便描述，本申请所有实施例中，上面提到的设备统称为终端设备。
通常网络设备会向终端设备发送业务数据，同时网络设备还会发送其他公共信号，比如SSB，RMSI等等。如果业务数据和其他公共信号所占用的时频资源相同，则可能会产生同频干扰问题，终端设备在所调度的时频资源接收业务数据的同时，也会接收到其他公共信号，其他公共信号对业务数据产生同频干扰，同频干扰会降低业务数据的解调性能。本发明实施例的信号处理方法主要用于在其他周期性发送的公共信号对需要接收的业务数据产生同频干扰时的干扰消除处理。
本发明实施例中公共信号是周期性发送的，其中，网络设备发送公共信号的方式可以通过广播的方式进行发送，每个时间周期发送的公共信号内容比较固定，基本相同。因此，终端设备在确定业务数据和公共信号存在同频干扰时，可以通过该公共信号的历史特征信息进行干扰消除处理，由于每个时间周期发送的公共信号的基本相同，因此根据公共信号的历史特征信息能够准确进行干扰消除处理，这种干扰消除方式复杂度低，并且准确度高。
作为对图1中部分内容的细化，图2是本发明实施例提供的一种简化的终端设备的结构示意图，所述UE可以是如图1中所示的终端设备1或者终端设备2.所述UE包括收发器801，控制器/处理器802，还可以包括存储器803和调制解调处理器804。
收发器801调节(例如，模拟转换、滤波、放大和上变频等)输出采样并生成上行链路信号，该上行链路信号经由天线发射给上述实施例中的基站。在下行链路上，天线接收上述实施例中基站发射的下行链路信号，收发器801调节(例如，滤波、放大、下变频以及数字化)从天线接收的信号并提供输入采样。收发器801可以为相同或者不同的物理实体。为相同的物理实体时，可以统称为收发器801，为不同的物理实体时，可以称为接收器和发生器。收发器801的功能可以考虑通过收发电路或者收发的专用芯片实现。
调制解调处理器804中，编码器8041接收要在上行链路上发送的业务数据和信令消息，并对业务数据和信令消息进行处理(例如，格式化、编码和交织)。调制器8042进一步处理(例如符号映射和调制)编码后的业务数据和信令消息并提供输出采样。解调器8044处 理(例如解调)该输入采样并提供符号估计。解码器8043处理(解交织和解码)该符号估计并提供发送给UE的已解码的数据和信令消息。编码器8041、调制器8042、解调器8044和解码器8043可以由合成的调制解调处理器804来实现。
控制器/处理器802对UE的动作进行控制和管理，用于执行实施例中由UE进行的处理步骤。控制器/处理器802可以考虑通过专用处理芯片、处理电路、处理器或者通用芯片实现。
存储器803用于存储用于所述UE的程序代码和数据。所述存储器803可以集成在所述控制器/处理器802中，也可以与所述控制器/处理器802分开设置。
可选的，收发器801，用于接收业务数据的调度信令，所述调度信令包含业务数据的调度信息；以及，接收公共信号的配置消息，所述配置消息包含所述公共信号的配置信息，所述公共信号为周期性发送的信号；
控制器/处理器802，用于根据所述业务数据的调度信息和所述公共信号的配置信息，确定所述业务数据和所述公共信号存在同频干扰；以及，根据所述公共信号的历史特征信息进行干扰消除处理。
可选的，所述配置信息包括所述终端设备所属小区相邻小区的公共信号的配置信息，所述业务数据的调度信令包括所述终端设备所属小区的业务数据的调度信令。
可选的，所述配置信息包括所述终端设备所属小区的公共信号的配置信息，所述业务数据的调度信令包括所述终端设备所属小区的业务数据的调度信令。
其中，业务数据的调度信息包括所述业务数据的时频资源信息，所述公共信号的配置信息包括所述公共信号的时频资源信息；
控制器/处理器802，用于根据所述业务数据的时频资源信息和所述公共信号的时频资源信息，确定所述业务数据和当前时间周期发送的所述公共信号存在同频干扰。
可选的，所述公共信号的历史特征信息包括历史时间周期发送的所述公共信号的特征信息；所述历史时间周期发送的所述公共信号的特征信息为从所述历史时间周期的接收信号中提取的，所述接收信号包含所述历史时间周期发送的所述公共信号。
若特征信息包括所述历史时间周期发送的所述公共信号的比特信息；
收发器801，用于对所述接收信号进行采样处理，获得正交振幅调制QAM符号；
解调器8044，用于对所述QAM符号进行解调处理，获得软比特信息；以及，对所述软比特信息进行判决处理，获得所述历史时间周期发送的所述公共信号的比特信息。
若特征信息包括历史时间周期发送的所述公共信号的软比特信息；
收发器801，用于对所述接收信号进行采样处理，获得正交振幅调制QAM符号；
解调器8044，用于对所述QAM符号进行解调处理，获得所述历史时间周期发送的所述公共信号的软比特信息。
若特征信息包括历史时间周期发送的所述公共信号的统计特征信息；
控制器/处理器802，用于计算所述接收信号的统计特征值，获得所述历史时间周期发送的所述公共信号的统计特征信息。
可选的，控制器/处理器802在根据所述公共信号的历史特征信息进行干扰消除处理时，可以根据所述公共信号的历史特征信息，构造与所述公共信号对应的重构信号；并根据所 述重构信号进行干扰消除处理。
结合图1所示的应用场景以及图2的终端设备的结构示意图，参见图3，本发明实施例提供了一种信号处理方法的流程图，该方法包括但不限于以下步骤：
S101，所述终端设备接收业务数据的调度信令，所述调度信令包含业务数据的调度信息；
在一个实施例中，网络设备需要向终端设备发送业务数据之前，需要向终端设备发送业务数据的调度信令，该业务数据的调度信令包含业务数据的调度信息，该调度信息包括但不限于业务数据所在的时域资源信息、频域资源信息、所采用的调制编码格式、子载波间隔等等。终端设备监听物理下行控制信道(Physical downlink control channel，PDDCH)，获取网络设备发送的调度信令，并对该调度信令进行解析，获得业务数据的调度信息，通过业务数据的调度信息可以获得业务数据所在的时频资源信息，终端设备在所指示的业务数据的时频资源接收业务数据。可选的，终端所接收的信号中不仅仅包含业务数据，还可能包含其他干扰信号，比如其他公共信号(SSB信号)。需要说明的是，网络设备在发送业务数据的调度信令时也可以是通过高层信令下发的。
S102，所述终端设备接收公共信号的配置消息，所述配置消息包含所述公共信号的配置信息，所述公共信号为周期性发送的信号；
在一个实施例中，公共信号是由网络设备发送给终端设备的信号，网络设备可以是通过广播的方式周期性的发送该公共信号，其中，公共信号可以是SSB信号或者RMSI。为了便于终端设备接收公共信号，网络设备需要发送公共信号的配置消息，公共信号的配置消息包含该公共信号的配置信息。
公共信号的配置信息包括但不限于发送该公共信号的时间周期、发送功率信息、承载该公共信号的接收波束的方向信息\发送波束的方向信息、公共信号所在的频域资源信息、公共信号的时间偏移量(即在每个时间周期的偏移量，比如时间周期是20ms，所指示的时间偏移量是3ms，即在每个时间周期20ms的第3ms发送该公共信号)、公共信号的发送格式(调制编码格式)以及子载波间隔等等。其中，公共信号的时间偏移量可以是通过指示在一个时间周期内的帧/子帧/slot/符号位置，公共信号的频域资源信息可以包括公共信号所占用的RE符号。通过上述公共信号的配置信息可以获得公共信号所在的时频资源信息。进一步可选的，若该公共信号不是终端设备自己检测到的，配置信息还可以指示公共信号的时间周期的起始时间。若该公共信号是终端设备自己检测到的，则时间周期的起始时间可以由终端设备自己获取到，配置信息可以不指示该公共信号的时间周期的起始时间。其中，公共信号由终端设备自己检测到的情况可以是：终端设备在初始接入阶段，在所有搜索窗内搜索SSB，通过盲检PSS和SSS，得到该SSB对应的小区ID，后续继续接收该小区的SSB，该周期性发送的SSB即是由终端自己检测到的。
可选的，终端设备可以是在进行小区搜索或者测量过程中，获取并存储该公共信号的配置信息。后续终端设备根据公共信号的配置信息接收周期性发送的公共信号。需要说明的是，终端设备不仅可以接收该终端设备所属小区的公共信号，还可以接收与该终端设备所属小区相邻小区的公共信号。需要说明的是，若终端设备接收相邻小区的公共信号，则 需要预先存储该相邻小区的公共信号的配置信息，其中，该终端设备可以自己接收相邻小区的网络设备所发送的公共信号的配置消息信息，并解析该配置消息得到相邻小区的公共信号的配置信息。或者该终端设备所属小区的网络设备获取到相邻小区的网络设备发送的相邻小区的公共信号的配置消息，再由该终端设备所属小区的网络设备向终端设备发送该相邻小区的公共信号的配置消息。
终端设备获取到公共信号的配置信息后，即可根据公共信号的配置信息按照所指示的公共信号所在的时频资源信息周期性的接收公共信号，终端设备接收到包含公共信号的接收信号后，对该接收信号进行处理，以得到该时间周期的公共信号的特征信息。
公共信号的特征信息包括但不限于公共信号的软比特信息、公共信号的比特信息、公共信号的RE符号信息以及公共信号的统计特征信息中的一种或者多种。公共信号的RE符号信息可以包括公共信号的QAM符号和子载波间隔。
其中，公共信号的比特信息可以是，终端设备对接收信号进行采样处理以及傅里叶变换等处理得到QAM符号，再对QAM符号进行解调处理，获得软比特信息，进一步对软比特信息进行判决处理，获得该时间周期发送的公共信号的比特信息。
其中，公共信号的软比特信息可以是，终端设备对接收信号进行采样处理以及傅里叶变换等处理得到QAM符号，再对QAM符号进行解调处理，获得该时间周期发送的公共信号的软比特信息。
其中，公共信号的统计特征信息可以是，终端设备计算该接收信号的统计特征值，从而获得该时间周期发送的公共信号的统计特征信息，统计特征值可以是方差，标准差等等。
需要说明的是，终端设备在获取公共信号的特征信息过程中，可以是在该接收信号不包含业务数据干扰的情况下才提取该接收信号所包含的公共信号的特征信息，以便于能够较为精确的得到公共信号的特征信息，在后续将该公共信号作为干扰信号进行干扰消除处理过程中，才能提高干扰消除的精确性。
S103，所述终端设备根据所述业务数据的调度信息和所述公共信号的配置信息，确定所述业务数据和所述公共信号存在同频干扰；
在一个实施例中，终端设备通过所获取的公共信号的配置信息，可以确定公共信号所在的时频资源，终端设备根据业务数据的调度信息，可以确定业务数据所在的时频资源，进一步判断公共信号所在的时频资源和业务数据所在的时频资源是否重叠来确定业务数据和公共信号是否存在同频干扰。若公共信号所在的时频资源和业务数据所在的时频资源存在重叠，则确定公共信号和业务数据存在同频干扰，由于业务数据是终端设备所需要接收的信号，因此公共信号构成了对业务数据产生同频干扰的干扰信号。
可选的，终端设备确定公共信号和业务数据是否存在同频干扰的确定方式还可以是，终端设备确定网络设备在发送业务数据时，是否根据公共信号所占用的时频资源进行了规避，即在公共信号所占用的时频资源上无业务数据的发送，如果网络设备未进行规避，则公共信号业务数据之间可能存在同频干扰，需要根据业务数据所在的时频资源和公共信号所在的时频资源是否存在重叠的来确定公共信号和业务数据是否存在同频干扰，如果网络设备进行了规避，则公共信号和业务数据不会存在同频干扰。
可选的，终端设备需要接收的业务数据可以是网络设备在当前时间周期发送的业务数 据，终端设备可以根据当前时间周期的公共信号所在的时频资源信息和业务数据的时频资源信息，确定当前时间周期的公共信号和业务数据是否存在同频干扰。
S104，所述终端设备根据所述公共信号的历史特征信息进行干扰消除处理。
在一个实施例中，当确定公共信号和业务数据存在同频干扰，终端设备即根据公共信号的历史特征信息进行干扰消除处理。其中，公共信号的历史特征信息可以是历史时间周期发送的公共信号的特征信息，该历史时间周期可以是当前时间周期之前的一个或者多个时间周期。
可选的，当前时间周期的公共信号和业务数据存在同频干扰，由于每个时间周期发送的公共信号基本相同，因此可以采用历史时间周期的公共信号的特征信息对当前时间周期的同频干扰进行干扰消除处理。其中，历史时间周期的公共信号的特征信息是从包含该历史时间周期的公共信号的接收信号中提取的，且该接收信号中不存在同频干扰，具体提取方式请参照步骤S102的描述，在此不再赘述。
可选的，公共信号的历史特征信息包括历史时间周期发送的公共信号的比特信息、软比特信息、RE符号信息中的任意一种或者多种，终端设备可以是根据公共信号的历史特征信息，重构与该公共信号对应的重构信号，并根据该重构信号进行干扰消除处理。比如，终端设备在业务数据所在的时频资源接收混合信号，该混合信号中包括业务数据和公共信号，终端设备从该混合信号中减去重构信号，从而实现干扰消除处理的目的。
可选的，公共信号的历史特征信息包括历史时间周期发送的公共信息的统计特征信息，终端设备可以将该统计特征信息作为IRC算法的干扰特性输入因子，并采用IRC算法进行干扰消除处理。
通过上述技术方案，在业务数据和公共信号存在同频干扰时，利用该公共信号的历史特征信息进行干扰消除处理，在干扰消除处理过程中不需要复杂的计算，即可较为精确的得到对业务数据存在同频干扰的公共信号的干扰特征，减少了干扰消除处理的复杂度，并且能够达到比较准确的干扰消除效果。
请参照图4，为本发明实施例提供的另一种信号处理方法的流程示意图，本发明实施例的信号处理方法是对图3提供的信号处理方法的细化，如图4所示，本发明实施例的信号处理方法包括但不限于如下步骤：
S201，终端设备接收业务数据的调度信令，所述调度信令包含业务数据的调度信息；
本发明实施例步骤S201请参照图3的实施例步骤S101，在此不再赘述。
S202，所述终端设备接收公共信号的配置消息，所述配置消息包含所述公共信号的配置信息，所述公共信号为周期性发送的信号；
可选的，上述公共信号可以包括SSB或者RMSI等等，本发明实施例对此不作限定，为了便于理解，下面以目标信号为SSB作为举例说明。
在5G/NR系统中，多址方式上采用和LTE类似的模式，下行使用正交频分多址(Orthogonal Frequency Division Multiple Access，OFDMA)、上行使用单载波频分多址(Single-carrier Frequency-Division Multiple Access，SC-FDMA)和OFDMA两种方式；在频段使用上，NR系统除了可以在3GHz以下的频段上进行部署外，还能够在3GHz-6GHz， 20G-40GHz频段上进行网络部署。为了解决高频带来的路径损耗快、同时达到提高频谱利用率的诉求，NR标准确定，小区会进行multi-beam(多波束)和single-beam(单波束)两种不同的模式。
multi-beam是将1个小区/扇区，利用多天线波束赋型技术，划分成多个覆盖区域，每个覆盖区域均有同步信号和广播信号进行覆盖，在NR系统上将承载同步信号、广播信号的信息块叫SSB，一个覆盖区域对应一个SSB，本发明实施例将该覆盖区域称为SSB覆盖区域。本发明实施例的SSB内容可以包括主同步信号(Primary Synchronization Signal，PSS)，辅同步信号(Secondary Synchronization Signal，SSS)、物理广播信道(Physical Broadcast Channel，PBCH)信号、以及PBCH上的专用解调导频信号(Demodulation Reference Signal，DMRS)。
single-beam就是小区/扇区的覆盖方式是全向覆盖，即1个小区/扇区只有1个波束覆盖，对应只有1个SSB，也即存在1个SSB覆盖区域。
目前对于低于6GHz(sub-6G)的部署场景下，最多可有8个SSB覆盖区域；对于毫米波(高于6GHz)部署场景下，最多可有64个SSB覆盖区域，每个SSB覆盖区域对应一个SSB。如图5a所示，即是sub-6G部署场景下采用4个SSB覆盖区域的覆盖范围示意图，如图5b所示，即是毫米波部署场景下采用8个SSB覆盖区域的覆盖范围示意图。
本发明实施例中，一个小区内的每个SSB覆盖区域对应的SSB可以是以时分方式发送的，即不同覆盖区域的SSB占用不同的slot或者相同slot内的不同OFDM符号，并且针对一个覆盖区域的SSB，该覆盖区域的SSB是以一定的时间周期循环发送的，每个时间周期的SSB内容固定，基本相同。
对于相邻的小区，其发送的SSB数目和位置是否相同依赖于网络的部署。如图6所示，即是三个不同小区的SSB发送示意图，如图所示，小区cell0和小区cell1的SSB发送数目和发送的时间周期相同，小区cell2与小区cell0以及小区cell1的发送数目和发送时间周期不同。如图所示，对于一个覆盖区域的SSB，该覆盖区域的SSB按照一定的时间周期发送，且内容基本相同，比如第二个时间周期的SSB0和第一个时间周期的SSB0相同，本发明实施例即利用终端设备历史时间周期接收的SSB0来对当前时间周期中对业务数据产生同频干扰的SSB0进行干扰消除处理，这种干扰消除处理方式复杂度低，准确度高。
需要说明的是，对于每个小区的SSB的配置信息，终端设备可以通过读取广播消息或者高层的无线资源控制(Radio Resource Control，RRC)信令获得，广播消息如：系统信息块(System Information Blocks，SIB1)消息，高层RRC信令如：物理广播信道(Physical Broadcast Channel，PBCH)或者RMSI。SSB的配置信息包括该小区的网络设备实际发送的SSB数目、发送SSB的时频资源信息以及发送SSB的时间周期、子载波间隔、发送格式(调制编码格式)等等。终端设备不仅可以获取该终端设备所属小区的SSB的配置信息，还可以获取与该终端设备所属小区相邻小区的SSB的配置信息。
比如，在终端设备在初始接入阶段，终端设备对所有搜索窗内的SSB进行搜索，通过SSB中的主同步信号(Primary Synchronization Signal，PSS)和辅同步信号(Secondary Synchronization Signal，SSS)盲检计算出该SSB的小区ID(小区ID用于识别是哪个小区的SSB，即是终端设备所属小区的SSB，还是终端设备所属小区相邻小区的SSB)，然后终 端设备搜索到该小区ID对应的小区后，终端设备解析该小区的主信息块(Master Information Block，MIB)消息，并通过MIB消息进行其他广播消息(即公共信号的配置消息)的解析，并最终通过公共信号的配置消息确定网络设备发送SSB的时间周期，以及对应每个时间周期内的时间偏移量等等。
如图7所示，为本发明实施例提供的一种SSB的时频资源结构图，如图所示，每个SSB包括4个时域相邻的符号，即PSS-PBCH-SSS-PBCH。其中，PSS和SSS可能存在发送功率差，即网络设备有可能发送PSS和SSS时的发送功率不一样，比如可以存在0db，3db，6db的偏移量。上述公共信号的配置信息中还可以包括SSB中的PSS和SSS分别的发送功率。
S203，所述终端设备根据所述业务数据的调度信息和所述公共信号的配置信息，确定所述业务数据和所述公共信号存在同频干扰；
本发明实施例步骤请参照图图3的实施例步骤S103，在此不再赘述。
S204，所述终端设备获取历史时间周期接收的包含所述公共信号的接收信号的信号能量强度；
在一个实施例中，公共信号是网络设备周期性发送的，在终端设备确定当前时间周期的公共信号和业务数据存在同频干扰之前，该终端设备在历史时间周期接收过网络设备发送的包含该公共信号的接收信号，该接收信号不包含业务数据。为了确定当前时间周期所接收的包含业务数据和公共信号的混合信号中公共信号的信号能量强度，终端设备获取历史时间周期接收的包含该公共信号的接收信号的信号能量强度。
S205，若所述终端设备确定所述信号能量强度小于目标阈值，所述终端设备根据所述公共信号的历史特征信息进行干扰消除处理；
在一个实施例中，终端设备存储最低门限阈值(如：low_threshold)和最高门限阈值(如high_threshold)，若历史时间周期接收的包含该公共信号的接收信号的信号能量强度小于最低门限阈值，则当前时间周期的同频干扰不强，不进行干扰消除处理。若历史时间周期接收的包含该公共信号的接收信号的信号能量强度大于最低门限阈值，并且小于最高门限阈值，则可以根据公共信号的历史特征信息进行干扰消除处理。若历史时间周期接收的包含该公共信号的接收信号的信号能量强度大于最高门限阈值，则说明当前时间周期的同频干扰特别强，需要对当前时间周期内公共信号所在的时频资源和业务数据所在的时频资源重叠的时频资源承载的信号删除，具体删除处理步骤请参照步骤S206，在此不赘述，重叠的时频资源可以是重叠的RE资源，对重叠的RE资源上承载的信号删除。上述最高门限阈值即是本发明实施例的目标阈值。通过这种方式可以避免错误的扩散，减小后续调制解调过程中的误差。
终端设备在根据公共信号的历史特征信息进行干扰消除处理时，不同的特征信息，干扰消除处理的方式不同。
可选的，特征信息包括历史时间周期发送的公共信号的统计特征信息，则终端设备可以采用干扰抑制算法进行干扰消除处理，终端设备将该统计特征信息作为干扰抑制算法的干扰特性输入因子，从而将包含业务数据和公共信号的混合信号中的公共信号进行抑制处理，干扰抑制算法可以是干扰抑制合并(Interference Rejection Combining,IRC)算法。
如图8所示，即是本发明实施例提供的一种IRC算法的模块结构示意图，如图所示，比如，y是终端设备所获取的混合信号(待解调)，该混合信号包括经过信道为H的网络设备发送的信号X，以及干扰信号U(如下公式所示)，其中X可以是业务数据，干扰信号U可以包括SSB：
Y＝HX+U
将存储的历史时间周期发送的SSB的统计特征信息作为干扰特性输入因子输入IRC模块进行计算，统计特征信息可以包括均值和方差，IRC模块利用输入的SSB的统计特征信息和信道估计H，进行Cholesky分解以及其他的相关运算，从而将干扰信号SSB白噪化。
另外，在业务数据所占用的时频资源和周期性发送的公共信号所占用的时频资源之间不存在重叠，即网络设备在发送SSB的RE资源上没有发送业务数据，则SSB和业务数据之间不存在同频干扰，但是可能会存在相邻小区的业务数据的干扰，本发明实施例还可以将该相邻小区的SSB的统计特征信息扩展到业务数据所在的时频资源上进行干扰消除处理，从而消除相邻小区的业务数据的干扰。
如图9所示，即是本发明实施例提供的另一种IRC算法示意图，如图所示，y相当于接收的混合信号(待解调)，混合信号包括经过信道为H的网络设备发送的信号X，以及干扰信号U(如下公式所示)，X可以是终端设备所属小区的业务数据，U可以是相邻小区的业务数据：
Y＝HX+U
计算该相邻小区的历史时间周期发送的SSB的统计特征信息，该统计特征信息包括均值和方差，再通过计算结果修正模块对该相邻小区的历史时间周期发送的SSB的统计特征信息进行修正，即将历史时间周期发送的SSB的统计特征信息修正并扩展到业务数据(比如PDSCH)所在的时频资源上，比如可以通过干扰自相关矩阵估计值Ruu阵进行扩展修正。IRC模块利用输入的修正后的统计特征信息进行Cholesky分解以及其他的相关运算，从而将干扰信号白噪化。
可选的，特征信息包括历史时间周期发送的公共信号的软比特信息、比特信息以及RE符号信息中的任意一种或多种。则终端设备可以根据该特征信息，重构与公共信号对应的重构信号，再从所接收的混合信号中将与重构的重构信号相同的信号分离出去。
比如，特征信息包括历史时间周期发送的公共信号的比特信息(信道编码后的bit信息)，重构过程为，根据比特信息和调制编码格式，得到正交振幅调制(Quadrature Amplitude Modulation，QAM)符号，根据QAM符号和子载波间隔，重构出与公共信号对应的重构信号，该重构信号即是混合信号中的干扰信号。
又比如，特征信息包括历史时间周期发送的公共信号的软比特信息，重构过程为，根据软比特信息和调制编码格式，得到QAM符号；再根据QAM符号和子载波间隔，重构出与公共信号对应的重构信号，该重构信号即是混合信号中的干扰信号。
又比如，特征信息包括历史时间周期发送的公共信号的RE符号信息，RE符号信息包括QAM符号和子载波间隔，因此可以直接根据RE符号信息，重构出与公共信号对应的重构信号，该重构信号即是混合信号中的干扰信号。
如图10所示，为本发明实施例提供的一种重构过程的示意图，这里以公共信号为SSB 作为举例说明，将历史时间周期发送的SSB的软比特信息通过干扰消除模块进行干扰重构，从而重构出干扰信号，再将接收的混合信号Y与重构出的干扰信号进行干扰相消，最后将干扰相消的信号通过解调译码模块进行解调和译码。
需要说明的是，终端设备接收业务数据的接收波束方向和历史时间周期接收SSB信号的接收波束方向可能不同，比如终端设备在接收除该终端设备所在SSB覆盖区域外的覆盖区域的SSB时的接收波束方向与该终端设备接收业务数据的接收波束方向不同。当终端设备接收业务数据的接收波束方向和历史时间周期接收SSB信号的接收波束方向不同时，在根据历史时间周期接收的SSB信号的特征信息对混合信号中所包含的公共信号进行干扰消除处理之前，需要利用两个不同接收波束方向的相关特性，进行折算，比如信号功率统计信息的折算，RE符号的信号量的折算等等。
可选的，若SSB中的PSS和SSS存在发送功率差，即网络设备发送PSS和SSS时的发送功率不一样，在进行干扰消除处理时，可以分别计算PSS和SSS的统计特征信息，从而得到多个统计特征信息，再根据该多个统计特征信息分别进行干扰消除处理。或者将PSS和SSS的统计特征信息进行合并，形成一个统计特征信息，并采用该统计特征信息进行干扰消除处理。若干扰消除处理过程是采用历史时间周期的SSB的比特信息、软比特信息以及RE符号信息进行干扰重构时，也可以根据发送PSS和SSS时的发送功率分别进行干扰重构。
可选的，上述在干扰消除处理过程中均利用了历史时间周期发送的公共信号的特征信息，若终端设备未存储历史时间周期发送的公共信号的特征信息，比如，终端设备在接收第一个时间周期的公共信号时，该时间周期的公共信号和业务数据存在同频干扰，则可以采用如下方式进行干扰消除处理：
在时频域上选定区域(时域上包含连续的若干个OFDM符号，频域上包含连续的若干个子载波)，计算该区域内所有导频点或数据RE上的干扰自相关矩阵，然后取平均值作为该区域内所有资源单元的干扰自相关阵估计值，得到Ruu阵，即干扰统计特征值。然后采用IRC算法进一步抑制干扰。IRC算法是通过估计干扰信号的统计特性并白化干扰信号的方法减少干扰信号对终端设备解调数据信道性能的影响。
具体可选的，针对一个OFDM系统，假设UE侧接收天线个数为N，用x、y和H分别表示频域某个子载波资源单元的发射符号向量、接收向量和等效频域信道矩阵，那么信道模型可以表示为
y＝Hx+u
其中u是N维向量，表示终端设备受到的同频干扰和加性高斯白噪声。如果没有同频干扰，仅有白噪声，u的自相关阵R uu＝E(uu H)为对角阵。当有同频干扰时，u的自相关阵R uu＝E(uu H)不再是对角阵，即干扰信号在空域是相关的。
可选的，可以利用区域内所有导频点计算Ruu。
Figure PCTCN2019083571-appb-000001
其中y k和H k是区域内对应第k个导频的接收信号和等效信道矩阵，p k为第k个导频符号，L p是导频点个数。
可选的，还可以利用所有导频点和数据点计算Ruu。
Figure PCTCN2019083571-appb-000002
其中y i和H i是区域内对应第i个RE(可以导频点，也可以是数据点)的接收信号和等效信道矩阵，x i为第i个RE点的发射符号，当x k对应数据点时，由译码结果反编码得到，L d是数据点个数。
然后将上述计算得到的Ruu作为IRC算法的干扰特性输入因子，并采用IRC算法进行干扰消除处理。
上述可见，如果没有利用历史时间周期所存储的SSB的统计特征信息进行计算，采用现有技术进行干扰消除处理，计算非常的复杂，并且所估算的干扰信号的统计特征值也不是很准确，导致干扰消除处理的也不精确。
S206，若所述终端设备确定所述信号能量强度大于所述目标阈值，所述终端设备将公共信号所在的时频资源和业务数据所在的时频资源重叠的时频资源承载的信号删除。
在一个实施例中，若历史时间周期接收的包含该公共信号的接收信号的信号能量强度大于目标阈值，则说明当前时间周期内所接收的混合信号中干扰信号(即公共信号)强度较大，为了防止错误扩散，终端设备从混合信号中删除重叠的时频资源所承载的信号，即重叠的时频资源所承载的信号不参加信号的解调过程。
S207，所述终端设备将经过步骤S205中干扰消除处理后的信号以及步骤S206中删除处理后的信号进行解调和译码；
需要说明的是，本步骤除了正常的解调和译码外，还有可能进行其他干扰处理过程，比如串行干扰消除(SIC Successive Interference Cancellation)处理和/或并行干扰消除(PIC Parallel Interference Cancellation)处理。
S208，若所述终端设备未成功解调和译码，所述终端设备向网络设备发送反馈信息，所述反馈信息用于辅助所述网络设备根据发送所述公共信号的时频资源对发送所述业务数据的时频资源进行资源非重叠映射，使得在发送所述公共信号的时频资源上无所述业务数据的发送。
在一个实施例中，终端设备将经过干扰消除处理后的信号和/或删除处理后的信号进行解调和译码，若未成功解调和译码，则需要网络设备优化资源映射方式，终端设备向网络设备发送反馈信息，反馈信息可以是本次调度的解调译码结果信息，或者公共信号的干扰强度，或者业务数据对应分割块的循环冗余校验码(Cyclic Redundancy Check，CRC)的校验结果信息，网络设备可以根据反馈信息进行资源非重叠映射，即在发送公共信号的时频资源上不进行业务数据的发送，这样终端在接收业务数据时，所获取的信号中不包含公共信号这种干扰信号，从而提高解调译码的成功率。
如图11所示，为本发明实施例提供的一种SSB干扰消除的示意图，如图所示，本发明实施例以目标信号为SSB作为举例说明：
S300，小区同步，终端设备解析并存储SSB，盲检该SSB中的PSS和SSS，获得该SSB对应的小区ID；
S301，终端设备接收该小区的其他广播信息，比如RMSI，获取该终端设备所属小区和/或邻小区的SSB发送位置，SSB发送位置包括SSB所在的时域资源以及频域资源；
S302，终端设备根据SSB发送位置，接收SSB信号，并存储SSB信号的特征信息，比如比特信息、软比特信息、统计特征信息(方差、标准差)以及RE符号信息等等；
S303，终端设备监测PDDCH信道，获取业务数据的调度信令，该调度信令用于指示终端设备接收业务数据以及业务数据所在的时频资源；
S304，终端设备可以根据SSB发送位置和业务数据所在的时频资源，确定是否存在SSB干扰；
S305，若确定存在SSB干扰，进一步确定历史时间周期接收的包含SSB的接收信号的信号能量强度是否小于目标阈值；若小于目标阈值，则执行步骤S306，若大于目标阈值，则执行步骤S307；
S306，利用存储的历史时间周期的SSB的特征信息进行干扰消除，具体的消除方式请参照图3和图4实施例的描述，在此不再赘述；
S307，删除业务数据所在时频资源和SSB所在时频资源重叠的时频资源承载的信号；
S308，进行解调和译码。
如图12所示，为本发明实施例提供的一种信号处理装置的结构示意图，该信号处理装置可以为终端设备，也可以为芯片或电路，比如可设置于终端设备的芯片或电路。该终端设备可以对应上述系统中的终端设备1或者终端设备2。
如图所示，本发明实施例的信号处理装置包括接收单元10和处理单元11。在本发明实施例中，可以将具有接收功能的天线和控制电路视为信号处理装置的接收单元10，将具有处理功能的处理器视为信号处理装置的处理单元11。如图12所示，信号处理装置包括接收单元10和处理单元111。接收单元也可以称为接收器、接收机、接收装置等。
作为一种实现方式，接收单元10的功能可以考虑通过收发电路，或者收发的专用芯片，或者收发通信接口以及接收器等等实现。处理单元11可以考虑通过专用处理芯片、处理电路、处理器或者通用芯片实现。
作为一种可选的实现方式，若处理单元11为处理器，则处理器可以包括基带处理器和中央处理器，基带处理器主要用于对通信协议以及通信数据进行处理，中央处理器主要用于对整个终端设备进行控制，执行软件程序，处理软件程序的数据。图12中的处理单元11集成了基带处理器和中央处理器的功能，本领域技术人员可以理解，基带处理器和中央处理器也可以是各自独立的处理器，通过总线等技术互联。本领域技术人员可以理解，终端设备可以包括多个基带处理器以适应不同的网络制式，终端设备可以包括多个中央处理器以增强其处理能力，终端设备的各个部件可以通过各种总线连接。所述基带处理器也可以表述为基带处理电路或者基带处理芯片。所述中央处理器也可以表述为中央处理电路或者中央处理芯片。对通信协议以及通信数据进行处理的功能可以内置在处理器中，也可以以软件程序的形式存储在存储单元中，由处理器执行软件程序以实现基带处理功能。
可选的，接收单元10，用于接收业务数据的调度信令，所述调度信令包含业务数据的调度信息；
所述接收单元10还用于接收公共信号的配置消息，所述配置消息包含所述公共信号的配置信息，所述公共信号为周期性发送的信号；
处理单元11，用于根据所述业务数据的调度信息和所述公共信号的配置信息，确定所述业务数据和所述公共信号存在同频干扰；
所述处理单元11还用于根据所述公共信号的历史特征信息进行干扰消除处理。
可选的，所述配置信息包括所述终端设备所属小区相邻小区的公共信号的配置信息，所述业务数据的调度信令包括所述终端设备所属小区的业务数据的调度信令。
可选的，所述配置信息包括所述终端设备所属小区的公共信号的配置信息，所述业务数据的调度信令包括所述终端设备所属小区的业务数据的调度信令。
可选的，所述业务数据的调度信息包括所述业务数据的时频资源信息，所述公共信号的配置信息包括所述公共信号的时频资源信息；
所述处理单元11具体用于根据所述业务数据的时频资源信息和所述公共信号的时频资源信息，确定所述业务数据和当前时间周期发送的所述公共信号存在同频干扰。
可选的，所述公共信号的历史特征信息包括历史时间周期发送的所述公共信号的特征信息；所述历史时间周期发送的所述公共信号的特征信息为从所述历史时间周期的接收信号中提取的，所述接收信号包含所述历史时间周期发送的所述公共信号。
可选的，所述特征信息包括所述历史时间周期发送的所述公共信号的比特信息；
所述处理单元11还用于对所述接收信号进行采样处理，获得正交振幅调制QAM符号；
所述处理单元11还用于对所述QAM符号进行解调处理，获得软比特信息；
所述处理单元11还用于对所述软比特信息进行判决处理，获得所述历史时间周期发送的所述公共信号的比特信息。
可选的，所述特征信息包括所述历史时间周期发送的所述公共信号的软比特信息；
所述处理单元11还用于对所述接收信号进行采样处理，获得正交振幅调制QAM符号；
所述处理单元11还用于对所述QAM符号进行解调处理，获得所述历史时间周期发送的所述公共信号的软比特信息。
可选的，所述特征信息包括所述历史时间周期发送的所述公共信号的统计特征信息；
所述处理单元11还用于计算所述接收信号的统计特征值，获得所述历史时间周期发送的所述公共信号的统计特征信息。
可选的，所述处理单元11具体用于根据所述公共信号的历史特征信息，构造与所述公共信号对应的重构信号，并根据所述重构信号进行干扰消除处理。
可选的，所述公共信号包括同步信号块SSB。
还应理解，本文中涉及的第一、第二、第三、第四以及各种数字编号仅为描述方便进行的区分，并不用来限制本发明实施例的范围。
应理解，本文中术语“和/或”，仅仅是一种描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况。另外，本文中字符“/”，一般表示前后关联对象是一种“或”的关系。
应理解，在本申请的各种实施例中，上述各过程的序号的大小并不意味着执行顺序的先后，各过程的执行顺序应以其功能和内在逻辑确定，而不应对本发明实施例的实施过程 构成任何限定。
本领域普通技术人员可以意识到，结合本文中所公开的实施例描述的各种说明性逻辑块(illustrative logical block)和步骤(step)，能够以电子硬件、或者计算机软件和电子硬件的结合来实现。这些功能究竟以硬件还是软件方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本发明的范围。
所属领域的技术人员可以清楚地了解到，为描述的方便和简洁，上述描述的系统、装置和单元的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。
在本申请所提供的几个实施例中，应该理解到，所揭露的系统、装置和方法，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，所述单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外，在本发明各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。
在上述实施例中，可以全部或部分地通过软件、硬件、固件或者其任意组合来实现。当使用软件实现时，可以全部或部分地以计算机程序产品的形式实现。所述计算机程序产品包括一个或多个计算机指令。在计算机上加载和执行所述计算机程序指令时，全部或部分地产生按照本发明实施例所述的流程或功能。所述计算机可以是通用计算机、专用计算机、计算机网络、或者其他可编程装置。所述计算机指令可以存储在计算机可读存储介质中，或者从一个计算机可读存储介质向另一个计算机可读存储介质传输，例如，所述计算机指令可以从一个网站站点、计算机、服务器或数据中心通过有线(例如同轴电缆、光纤、数字用户线(DSL))或无线(例如红外、无线、微波等)方式向另一个网站站点、计算机、服务器或数据中心进行传输。所述计算机可读存储介质可以是计算机能够存取的任何可用介质或者是包含一个或多个可用介质集成的服务器、数据中心等数据存储设备。所述可用介质可以是磁性介质，(例如，软盘、硬盘、磁带)、光介质(例如，DVD)、或者半导体介质(例如固态硬盘Solid State Disk(SSD))等。
以上所述，仅为本发明的具体实施方式，但本发明的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本发明揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本发明的保护范围之内。因此，本发明的保护范围应以所述权利要求的保护范围为准。

Claims (27)

  1. 一种信号处理方法，其特征在于，包括：
    终端设备接收业务数据的调度信令，所述调度信令包含业务数据的调度信息；
    所述终端设备接收公共信号的配置消息，所述配置消息包含所述公共信号的配置信息，所述公共信号为周期性发送的信号；
    所述终端设备根据所述业务数据的调度信息和所述公共信号的配置信息，确定所述业务数据和所述公共信号存在同频干扰；
    所述终端设备根据所述公共信号的历史特征信息进行干扰消除处理。
  2. 如权利要求1所述的方法，其特征在于，所述配置信息包括所述终端设备所属小区相邻小区的公共信号的配置信息，所述调度信息包括所述终端设备所属小区的业务数据的调度信息。
  3. 如权利要求1所述的方法，其特征在于，所述配置信息包括所述终端设备所属小区的公共信号的配置信息，所述调度信息包括所述终端设备所属小区的业务数据的调度信息。
  4. 如权利要求1-3任意一项所述的方法，其特征在于，所述业务数据的调度信息包括所述业务数据的时频资源信息，所述公共信号的配置信息包括所述公共信号的时频资源信息；
    所述终端设备根据所述业务数据的调度信息和所述公共信号的配置信息，确定所述业务数据和所述公共信号存在同频干扰，包括：
    所述终端设备根据所述业务数据的时频资源信息和所述公共信号的时频资源信息，确定所述业务数据和当前时间周期发送的所述公共信号存在同频干扰。
  5. 如权利要求1-4任意一项所述的方法，其特征在于，所述公共信号的历史特征信息包括历史时间周期发送的所述公共信号的特征信息；所述历史时间周期发送的所述公共信号的特征信息为从所述历史时间周期的接收信号中提取的，所述接收信号包含所述历史时间周期发送的所述公共信号。
  6. 如权利要求5所述的方法，其特征在于，所述特征信息包括所述历史时间周期发送的所述公共信号的比特信息；所述方法还包括：
    所述终端设备对所述接收信号进行采样处理，获得正交振幅调制QAM符号；
    所述终端设备对所述QAM符号进行解调处理，获得软比特信息；
    所述终端设备对所述软比特信息进行判决处理，获得所述历史时间周期发送的所述公共信号的比特信息。
  7. 如权利要求5所述的方法，其特征在于，所述特征信息包括所述历史时间周期发送 的所述公共信号的软比特信息；所述方法还包括：
    所述终端设备对所述接收信号进行采样处理，获得正交振幅调制QAM符号；
    所述终端设备对所述QAM符号进行解调处理，获得所述历史时间周期发送的所述公共信号的软比特信息。
  8. 如权利要求5所述的方法，其特征在于，所述特征信息包括所述历史时间周期发送的所述公共信号的统计特征信息；所述方法还包括：
    所述终端设备计算所述接收信号的统计特征值，获得所述历史时间周期发送的所述公共信号的统计特征信息。
  9. 如权利要求1-8任意一项所述的方法，其特征在于，所述终端设备根据所述公共信号的历史特征信息进行干扰消除处理，包括：
    根据所述公共信号的历史特征信息，构造与所述公共信号对应的重构信号；
    根据所述重构信号进行干扰消除处理。
  10. 如权利要求1-9任意一项所述的方法，其特征在于，所述公共信号包括同步信号块SSB。
  11. 一种信号处理装置，其特征在于，包括：
    接收单元，用于接收业务数据的调度信令，所述调度信令包含业务数据的调度信息；
    所述接收单元还用于接收公共信号的配置消息，所述配置消息包含所述公共信号的配置信息，所述公共信号为周期性发送的信号；
    处理单元，用于根据所述业务数据的调度信息和所述公共信号的配置信息，确定所述业务数据和所述公共信号存在同频干扰；
    所述处理单元还用于根据所述公共信号的历史特征信息进行干扰消除处理。
  12. 如权利要求11所述的装置，其特征在于，所述配置信息包括所述终端设备所属小区相邻小区的公共信号的配置信息，所述调度信息包括所述终端设备所属小区的业务数据的调度信息。
  13. 如权利要求11所述的装置，其特征在于，所述配置信息包括所述终端设备所属小区的公共信号的配置信息，所述调度信息包括所述终端设备所属小区的业务数据的调度信息。
  14. 如权利要求11-13任意一项所述的装置，其特征在于，所述业务数据的调度信息包括所述业务数据的时频资源信息，所述公共信号的配置信息包括所述公共信号的时频资源信息；
    所述处理单元具体用于根据所述业务数据的时频资源信息和所述公共信号的时频资源 信息，确定所述业务数据和当前时间周期发送的所述公共信号存在同频干扰。
  15. 如权利要求11-14任意一项所述的装置，其特征在于，所述公共信号的历史特征信息包括历史时间周期发送的所述公共信号的特征信息；所述历史时间周期发送的所述公共信号的特征信息为从所述历史时间周期的接收信号中提取的，所述接收信号包含所述历史时间周期发送的所述公共信号。
  16. 如权利要求15所述的装置，其特征在于，所述特征信息包括所述历史时间周期发送的所述公共信号的比特信息；
    所述处理单元还用于对所述接收信号进行采样处理，获得正交振幅调制QAM符号；
    所述处理单元还用于对所述QAM符号进行解调处理，获得软比特信息；
    所述处理单元还用于对所述软比特信息进行判决处理，获得所述历史时间周期发送的所述公共信号的比特信息。
  17. 如权利要求15所述的装置，其特征在于，所述特征信息包括所述历史时间周期发送的所述公共信号的软比特信息；
    所述处理单元还用于对所述接收信号进行采样处理，获得正交振幅调制QAM符号；
    所述处理单元还用于对所述QAM符号进行解调处理，获得所述历史时间周期发送的所述公共信号的软比特信息。
  18. 如权利要求15所述的装置，其特征在于，所述特征信息包括所述历史时间周期发送的所述公共信号的统计特征信息；
    所述处理单元还用于计算所述接收信号的统计特征值，获得所述历史时间周期发送的所述公共信号的统计特征信息。
  19. 如权利要求11-18任意一项所述的装置，其特征在于，
    所述处理单元具体用于根据所述公共信号的历史特征信息，构造与所述公共信号对应的重构信号，并根据所述重构信号进行干扰消除处理。
  20. 如权利要求11-19任意一项所述的装置，其特征在于，所述公共信号包括同步信号块SSB。
  21. 一种信号处理装置，其特征在于，包括处理器和存储器，其中，所述存储器用于存储程序代码，所述程序代码被所述处理器执行时，所述信号处理装置实现如权利要求1至10任一项所述的信号处理方法。
  22. 一种信号处理方法，其特征在于，包括：
    终端设备接收所述终端设备所属小区相邻小区的公共信号的配置信息，所述公共信号 为周期性发送的信号，所述配置信息包括以下信息中的至少一种：所述公共信号的子载波间隔、网络设备发送的所述公共信号的数目、所述公共信号的时间周期、以及所述公共信号的时间偏移量；
    所述终端设备根据所述配置信息，接收所述终端设备所属小区相邻小区的公共信号；
    所述终端设备计算所述终端设备所属小区相邻小区的公共信号的特征信息，所述特征信息包括统计特征信息和/或能量强度。
  23. 如权利要求22所述的方法，其特征在于，所述方法还包括：
    所述终端设备根据所述终端设备所属小区相邻小区的公共信号的特征信息，将所述终端设备所属小区相邻小区的公共信号作为干扰信号进行干扰消除处理。
  24. 一种信号处理方法，其特征在于，所述方法包括：
    所述终端设备对所述终端设备所属小区相邻小区的公共信号进行盲检，获得所述公共信号的配置信息，所述配置信息包括以下信息中的至少一种：所述公共信号的子载波间隔、网络设备发送的所述公共信号的数目、所述公共信号的时间周期、以及所述公共信号的时间偏移量；
    所述终端设备根据所述公共信号的配置信息，接收所述终端设备所属小区相邻小区的公共信号；
    所述终端设备计算所述终端设备所属小区相邻小区的公共信号的特征信息；
    所述终端设备根据所述公共信号的特征信息，将所述公共信号作为干扰信号进行干扰消除处理。
  25. 如权利要求24所述的方法，其特征在于，所述公共信号包括同步信号块SSB。
  26. 一种信号处理装置，其特征在于，包括处理器和存储器，其中，所述存储器用于存储程序代码，所述程序代码被所述处理器执行时，所述信号处理装置实现如权利要求22或23所述的信号处理方法。
  27. 一种信号处理装置，其特征在于，包括处理器和存储器，其中，所述存储器用于存储程序代码，所述程序代码被所述处理器执行时，所述信号处理装置实现如权利要求24或25所述的信号处理方法。
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