WO2012019489A1 - 射频检测方法、装置及系统 - Google Patents

射频检测方法、装置及系统 Download PDF

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Publication number
WO2012019489A1
WO2012019489A1 PCT/CN2011/076218 CN2011076218W WO2012019489A1 WO 2012019489 A1 WO2012019489 A1 WO 2012019489A1 CN 2011076218 W CN2011076218 W CN 2011076218W WO 2012019489 A1 WO2012019489 A1 WO 2012019489A1
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WIPO (PCT)
Prior art keywords
radio frequency
window
channel
power
unit
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Ceased
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PCT/CN2011/076218
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English (en)
French (fr)
Inventor
刁心玺
朱晓冬
赖峥嵘
张森林
杨光
马志锋
张力
岳天恒
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ZTE Corp
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ZTE Corp
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Priority to JP2013523476A priority Critical patent/JP5650326B2/ja
Priority to EP11816048.0A priority patent/EP2592769B1/en
Publication of WO2012019489A1 publication Critical patent/WO2012019489A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/30—Monitoring; Testing of propagation channels
    • H04B17/382—Monitoring; Testing of propagation channels for resource allocation, admission control or handover
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/30—Monitoring; Testing of propagation channels
    • H04B17/309—Measuring or estimating channel quality parameters
    • H04B17/318—Received signal strength
    • H04B17/327—Received signal code power [RSCP]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
    • H04W52/04—Transmission power control [TPC]
    • H04W52/38—TPC being performed in particular situations
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/30—Monitoring; Testing of propagation channels
    • H04B17/309—Measuring or estimating channel quality parameters
    • H04B17/336—Signal-to-interference ratio [SIR] or carrier-to-interference ratio [CIR]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/30—Monitoring; Testing of propagation channels
    • H04B17/309—Measuring or estimating channel quality parameters
    • H04B17/345—Interference values
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/30—Monitoring; Testing of propagation channels
    • H04B17/309—Measuring or estimating channel quality parameters
    • H04B17/354—Adjacent channel leakage power
    • 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
    • H04L5/0053—Allocation of signalling, i.e. of overhead other than pilot signals
    • H04L5/0055—Physical resource allocation for ACK/NACK
    • 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
    • H04L5/0073—Allocation arrangements that take into account other cell interferences
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/16—Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
    • H04W28/18—Negotiating wireless communication parameters
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
    • H04W52/04—Transmission power control [TPC]
    • H04W52/18—TPC being performed according to specific parameters
    • H04W52/24—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters
    • H04W52/241—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters taking into account channel quality metrics, e.g. SIR, SNR, CIR or Eb/lo
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
    • H04W52/04—Transmission power control [TPC]
    • H04W52/18—TPC being performed according to specific parameters
    • H04W52/24—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters
    • H04W52/243—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters taking into account interferences
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
    • H04W52/04—Transmission power control [TPC]
    • H04W52/30—Transmission power control [TPC] using constraints in the total amount of available transmission power
    • H04W52/36—Transmission power control [TPC] using constraints in the total amount of available transmission power with a discrete range or set of values, e.g. step size, ramping or offsets
    • H04W52/367—Power values between minimum and maximum limits, e.g. dynamic range
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling

Definitions

  • Radio frequency detection method Radio frequency detection method, device and system
  • the present invention relates to the field of wireless communication technologies, and in particular, to a radio frequency detection method, apparatus, and system. Background technique
  • the common problem of deploying communication channels dynamically using idle bands or deploying different communication systems in adjacent frequencies within the same geographical area is to suppress adjacent channel interference between systems.
  • the simplest way to control adjacent channel interference is to reserve enough guard bands between adjacent bands, but the disadvantage of this method is that the spectrum usage is low.
  • the wireless communication system is required to automatically identify the available idle frequency band and adaptively configure the guard band width, the transmission power and other parameters, and the realization of these capabilities requires real-time recognition of the wireless environment, real-time cognitive wireless environment needs The power spectrum distribution over a particular frequency band and the performance of the radio frequency device over a particular frequency band are detected and estimated.
  • the prior art methods and apparatus for measuring radio frequency detection, or wireless environment awareness are as follows:
  • the Chinese patent application No. CN200610011235.6 discloses the following technical contents:
  • the given frequency band information system may include several frequency band measuring devices, and several frequency band information collection And management device, several wireless communication base stations (or access points), several base station controllers, and several terminals.
  • the frequency band information collection method includes four basic steps: Step 1: The frequency band information collecting and managing device collects the frequency band prior information from different networks; Step 2, the frequency band information collecting and managing device starts the frequency band information measurement; Step 3, the frequency band information gathering and The management device collects the frequency band measurement information; Step 4, the frequency band information collection and management device analyzes the overall frequency band information.
  • the technical solution of the application can reduce the power consumption, time and complexity overhead of the terminal in collecting frequency band information, and can also implement multi-band communication guidance, so that the network side can grasp the usage and idleness of the frequency band in a specific area, and assist the terminal to quickly Choose the right one Working frequency band.
  • the measurement of the frequency band measuring device includes the following basic contents: 1) Measurement of the operating frequency band, including measuring the measurement of the idle time slot in the operating frequency band, and grasping which time slots in the working frequency band of the specific system are in an idle state; In the working frequency band of a specific system, which time periods are idle, such as the use of frequency bands by digital television broadcasting, will change within one day. These data serve as the basis for the system to guide the terminal to accurately select the available frequency bands, obtain the required services, and flexibly use the spectrum and perform spectrum environment monitoring. 2) Measurement of idle frequency bands, including idle acknowledgment measurements, interference measurements in idle frequency bands, etc.
  • the terminal quickly captures the required signals; the synchronization relationship between the downlink time slots of the base stations in the TDD mode of different carrier base stations, especially when the base stations of different operators (TDD base stations or TDD/FDD hybrid duplex base stations) are co-sited
  • the synchronization relationship between time slots ie, the time difference of transmission of the transmitted signals between two transmitting antennas is TDOA
  • the measurement of the service type for example, measuring the current broadcast information and the broadcast service content in each broadcast frequency band, and acquiring the broadcast in real time.
  • Business channel, program content, signal quality Data The specific measurement items are collected according to the frequency band information and sent to the measuring device by the management device.
  • US Patent Application No. US20080075059A1 entitled “Method and apparatus for reducing the guard band between wireless communication systems operating in the same geographical area: a method and apparatus for reducing bandwidth protection between wireless communication systems in the same geographical area”
  • the application discloses the following technical content: In order to reduce the protection bandwidth between the first wireless communication system and the second wireless communication system operating in the same geographical area, the following method is used: The first wireless access point in the first wireless communication system sends Transmitting a beacon signal; the second wireless access point of the second wireless communication system scans in a frequency band of the second wireless communication system; checking interference of the first wireless access point with the second wireless access point; Two wireless access points, if the interference from the first wireless access point does not exceed an acceptable threshold.
  • a terminal, or wireless node, or wireless device as set forth in the patent application, comprising: one or more signal preparation modules configured to prepare a transmit signal for a first wireless system; one or more within the first wireless system Providing a module configured to provide a signal to be transmitted; one or a transmitting module for transmitting the signal; one or more receiving modules in the first and second wireless communication systems, one or more detecting modules for detecting The first wireless communication system interferes with the second wireless communication system; the one or more working modules cause the second wireless system to operate when the interference of the first wireless communication system to the second wireless communication system does not exceed the tolerable threshold.
  • the one or more preparation modules are configured to prepare a wireless beacon; the one or more detection modules further comprising one or more coupling loss modules for calculating a coupling loss between the first and second wireless communication systems; The one or more detection modules further include one or more interference calculation modules to calculate interference of the first system with the second system;
  • the first and second wireless systems are systems operated by the same operator that are located in the same geographic area and that operate on adjacent frequency bands. By periodically scanning adjacent frequency bands or beacon signals, the strength of the signal and the coupling loss are estimated based on the transmitted signal power of the nodes in the first second wireless communication system. According to the calculation result, the wireless communication system adjusts as follows: (a) the interference is below the acceptable threshold, then the wireless system works normally; (b) the interference is higher than the acceptable threshold, then the wireless communication system adjusts the transmission power, and the antenna pattern makes the interference Drop below the acceptable threshold; (c) Alternatively, both wireless communication systems reduce the transmit power.
  • the main object of the present invention is to provide a radio frequency detecting method, apparatus and system, and the technical solution of the present invention is implemented as follows:
  • a radio frequency detection method comprising:
  • the radio frequency detection control unit determines parameters of the detection window according to the measurement item
  • the radio frequency detection control unit determines a power reduction window parameter of the transmission channel that interferes with the detection window according to the parameter of the detection window;
  • the radio frequency detection control unit sends a power reduction window request to a scheduler unit to which the transmission channel that generates interference to the detection window belongs;
  • the scheduler unit sends a power reduction window request confirmation information to the radio frequency detection control unit; the radio frequency detection control unit determines whether the power reduction window request is confirmed according to the power reduction window request confirmation information fed back by the scheduler unit, and if confirmed, The radio frequency detection control unit determines the newly opened detection window parameter according to the power reduction window parameter fed back by the scheduler unit, and controls the radio frequency detection execution unit to complete the corresponding radio frequency detection item in the newly opened detection window; if not confirmed, The RF detection control unit stops the execution of this RF detection project.
  • the parameter of the detection window includes: a size of a detection window, a candidate configuration range of the detection window, and a radio frequency data collection manner, where the parameter method of determining the detection window is: the size of the detection window is subjected to a radio frequency sample according to the detection item. Determining a two-dimensional scale of time and frequency to be covered by the data set; the candidate configuration range of the detection window is determined according to a set of locations of detection windows capable of obtaining equivalent radio frequency sample data; The method is as follows: one of the measurements is completed by a single radio frequency sample data collection and the measurement is completed by multiple radio frequency sample data collection.
  • the determining, according to the parameter of the detection window, determining a transmission signal that interferes with the detection window includes: determining the size of the power reduction window, determining the candidate power distribution window range, and determining the power reduction window opening manner;
  • the method for determining the power reduction window size is: determining a time interval covered by the power reduction window to be equal to or greater than a time interval covered by the detection window; and transmitting power to the detection window on a frequency band occupied by the transmission channel
  • the width of the sub-band generated within the interference intensity greater than the predetermined threshold is determined as the frequency domain width of the power reduction window, that is, the power reduction window size;
  • the determining method of the power reduction window candidate configuration range is: using a time interval in the candidate configuration range of the detection window as a candidate time range of the power reduction window; and a variation range allowed by the frequency scale of the power reduction window as a power reduction window
  • the candidate frequency range that is, the candidate configuration range as the power reduction window
  • the method for determining the power-down window development mode is as follows: For a single RF sample data collection mode, only one power-down window is opened in the frequency band of the transmission channel in one measurement event; In the measurement event, multiple power reduction windows are opened on the frequency band in which the transmission channel is located.
  • the manner in which the scheduler unit to which the transmission channel that generates interference to the detection window belongs sends a power reduction window request is:
  • the radio frequency detection control unit sends a power reduction window request to the scheduler unit to which the transmission channel that generates interference to the detection window belongs by using the uplink radio channel of the wireless terminal to which the radio terminal belongs, or the radio frequency detection control unit belongs to the transmission channel that interferes with the detection window.
  • a network side channel between the scheduler units sends a power down window request;
  • the power reduction window request carries the power reduction window parameter information, and specifically includes a time scale and a frequency scale of the power reduction window, a position of the power reduction window or a candidate configuration range, and a manner of opening or appearing the power reduction window.
  • the power reduction window request further carries priority information, where the priority information is used to indicate: forcing the scheduler unit to open a power down window on the transmit channel, or by a scheduler unit Depending on the current business situation, it is decided whether to open a power reduction window on the transmission channel.
  • the manner in which the scheduler unit sends the power reduction window request confirmation information to the radio frequency detection control unit is:
  • the scheduler unit opens a power down window according to the information contained in the power down window request on the channel on which it controls the control, and sends the power down window to the radio frequency
  • the detection control unit sends a power reduction window request confirmation information
  • the scheduler unit determines whether there are resources that meet the requirements in the idle time-frequency resources or the unusable time-frequency resources owned by the control channel that it controls. If there is no resource that meets the requirements, it is determined whether the user can be reduced.
  • the data transmission rate or short-term interruption of data transmission of some users provides resources required for the power reduction window; when the resources required for the power reduction window are satisfied, the scheduler unit sends a power reduction window confirmation to the radio frequency detection control unit. Information, otherwise send a message that refuses to open the power down window.
  • the radio frequency detection item comprises one or more of the following radio frequency detection items: signal power measurement on an adjacent channel;
  • the maximum transmit power of the transmit channel is measured.
  • the scheduler unit on the network side requests the radio frequency detection execution unit to open the power reduction window of the adjacent channel of the uplink channel according to the power reduction window of the terminal side radio frequency detection control unit, the time interval and frequency appearing in the power reduction window
  • the uplink resource is not configured for the terminal to which the radio frequency detection control unit belongs in the interval; the time interval and the frequency interval appearing in the power reduction window are not Configuring an uplink resource for the other terminal controlled by the scheduler unit on the first idle frequency band; the scheduler unit sends the power reduction window acknowledgement information to the radio frequency detection control unit through the receiving channel of the transceiver unit, and the radio frequency detection control unit is configured according to The power reduction window confirmation information sent by the scheduler unit controls the radio frequency detection execution unit to complete the specified measurement item in the corresponding detection window.
  • the present invention also provides a method for determining the maximum transmission power of a transmission channel in real time, the method comprising:
  • the radio frequency detecting method determines a measurement window of the transmission channel leakage power on the adjacent channel, and measures the leakage power P of the transmission channel on the adjacent channel (acl And acquiring the transmit power P(t) of the transmit channel when the leakage power is generated on the adjacent channel;
  • the product of the transmission power P(t) of the transmission channel and the ratio K is determined as the maximum transmission power of the transmission channel.
  • the present invention also provides a radio frequency detecting apparatus for implementing the radio frequency detecting method proposed by the present invention.
  • the apparatus includes an antenna unit, and further includes:
  • a transceiver unit configured to control, according to a request of the radio frequency detection control unit, a generation of a power reduction window on a transmission channel of the transceiver unit;
  • a radio frequency detection control unit configured to determine a parameter of the detection window according to the measurement item, and determine a power reduction window parameter of the transmission channel that interferes with the detection window according to the parameter of the detection window; and is further configured to send a request for the power reduction window to the transceiver unit And determining a newly opened detection window parameter according to the power reduction window parameter in the confirmation information requested by the power reduction window; and further configured to control the radio frequency detection execution unit;
  • a radio frequency detection execution unit configured to receive at the control of the radio frequency detection control unit Radio detection of the corresponding radio frequency detection item is completed in a newly opened detection window on the transmission channel controlled by the transmitting unit or on the adjacent channel of the transmission channel;
  • the interface unit is configured to transmit data between the transceiver unit and the network side, and to transmit measurement control and measurement data between the radio frequency detection control unit and the radio frequency detection execution unit and the network side.
  • the device further includes: a scheduler unit, located in the transceiver unit or on the network side, configured to receive a power reduction window request sent by the radio frequency detection control unit, and according to the detection provided by the radio frequency detection control unit
  • the window parameter determines a power reduction window parameter, and sends a power reduction window request acknowledgement information to the radio frequency detection control unit, where the power reduction window request acknowledgement information includes a power reduction window parameter.
  • the radio frequency detection execution unit comprises:
  • An adjustable passband filter configured to perform bandpass filtering on receiving the radio frequency detection signal from the antenna unit under the control of the radio frequency detection control unit;
  • An RF power attenuator/coupler configured to perform RF signal power attenuation on the RF signal output by the adjustable passband filter under the control of the RF detection control unit, and the attenuated RF signal is input to the receiving channel for processing Unit
  • a receiving channel processing unit configured to perform low noise amplification and frequency conversion processing of the radio frequency signal on adjacent channels of the transmitting channel and/or the transmitting channel under the control of the radio frequency detecting control unit;
  • a parameter estimation and signal demodulation unit configured to perform parameter estimation and/or signal demodulation on a signal from the receiving channel processing unit under the control of the radio frequency detection control unit;
  • the measurement data storage unit is configured to store the parameter estimation and the measurement result of the signal demodulation unit.
  • the present invention further provides a radio frequency detecting system, the system comprising:
  • a wireless access point and a wireless terminal implemented by the radio frequency detecting device according to the present invention a neighboring band measurement management unit, located at the network side, for using the radio frequency in the wireless access point
  • the detection item is managed, and the specific management content includes one or more of the following: transmitting the wireless access point and/or the transmission of the wireless terminal to the radio frequency detection control unit of the wireless access point and/or the wireless terminal side.
  • the measurement result is received from the radio access control unit on the wireless access point and/or the wireless terminal side.
  • the present invention further provides a method for determining a protection bandwidth of a neighboring band, the method comprising:
  • the neighboring band measurement management unit sends an adjacent channel power measurement item indication to the radio frequency detection control unit in the network side baseband processing unit BBU, and the radio frequency detection control unit in the network side BBU controls the radio frequency detection execution unit pair in the wireless access point.
  • the long-term evolution time division duplex LTE TDD channel on the first idle frequency band is adjacent to the TV broadcast channel for signal power measurement, and this measurement result? ( ) to the adjacent band measurement management unit;
  • the neighboring band measurement management unit determines the interference power P(noise) of the adjacent channel according to the existing power P(a) of the adjacent channel and the required signal-to-interference ratio R(s/n) of the adjacent channel. P(a)/R(s/n)
  • the adjacent band measurement management unit calculates the LTE TDD transmission on the out-of-band leakage power curve based on the out-of-band leakage power curve obtained by the measurement or according to the technical specifications of the LTE TDD transmission channel.
  • the channel is in a frequency band BW (TV) having a bandwidth equal to the bandwidth of the television broadcast channel.
  • BW bandwidth
  • the out-of-band leakage P(acl) is equal to the maximum interference power P (noise) that the television broadcast channel can tolerate (BW) TV) center frequency f3;
  • the adjacent band measurement management unit determines the guard bandwidth BW (guard) based on the distance between the center frequency ⁇ of the BW (TV) and the center frequency fl of the LTE TDD transmission channel.
  • the present invention utilizes a scheduler unit of an existing system for time-frequency resources on a radio frequency measurement method.
  • the dynamic management capability cooperates with the measurement window on its controlled transmit channel to achieve a flexible zero-power transmit window.
  • the present invention provides a structure of a communication device including a radio frequency detecting unit.
  • the structure is characterized in that the scheduler unit and the measuring unit have a transmission channel for transmitting measurement window information and/or zero power transmission window information, and the radio frequency detection
  • the method for opening a zero power window according to the present invention can achieve measurement and/or information demodulation of existing wireless channel signal power on adjacent channels of a local transmission channel, and can also implement local transmitters.
  • the measurement results can be used for one or more of the following purposes: 1) idle time slots existing on adjacent channels of the local transmit channel; 2) determined on the idle frequency band The guard band width between the wireless channel and the existing wireless channel adjacent thereto; 3) Implementing BIT (Built In Test) for device fault location.
  • the present invention provides a system comprising a device with a radio frequency detection unit and an adjacent band/part channel measurement management unit according to the invention, the system being adaptively determining its working channel using the method of the invention The width of the guard band between adjacent channels transmitted with different sites.
  • FIG. 1 is a flow chart of a radio frequency detection method according to the present invention.
  • 2a-2c are schematic diagrams of a measurement window and a power reduction window
  • 3a-3b are schematic structural views of a radio frequency detecting device according to the present invention.
  • FIG. 4 is a schematic structural diagram of an RF detection execution unit according to the present invention.
  • FIG. 5 is a schematic structural diagram of a radio frequency detection system supporting radio frequency detection of adjacent channels according to the present invention
  • FIG. 6a to FIG. 6b are schematic diagrams of a wireless fixed access system for configuring transmission channel parameters according to states of adjacent channels according to the present invention
  • FIG. 7 is a schematic diagram of the relative power of the leakage power and the signal power on the adjacent channel according to the present invention determining the width of the protection bandwidth.
  • FIG. 1 is a flowchart of a method for performing radio frequency detection in the presence of interference in a detection window according to the present invention, where the detection method is used to clear the same frequency and/or adjacent frequency in the detection window, and improve the radio frequency. The accuracy of the test.
  • the method includes the following steps:
  • Step S101 In the first time interval, the radio frequency detection control unit determines a parameter of the detection window according to the measurement item;
  • the radio frequency detection control unit in the radio frequency detecting device of the present invention determines the parameters of the detection window according to the radio frequency detection item to be executed, and the radio frequency detection item to be executed is one or a combination of the following items:
  • the specific method for the radio frequency detection control unit to determine the parameters of the detection window according to the radio frequency detection item to be performed is:
  • Step A1 The radio frequency detection control unit determines the size of the detection window and its candidate configuration range.
  • the specific method for the radio frequency detection control unit to determine the size of the detection window is: determining the time required to perform the radio frequency sample data collection according to the detection item and The two-dimensional scale of the frequency, the two-dimensional scale of the time and frequency covered by the radio frequency sample data collection is the detection window of the present invention.
  • determining a candidate configuration range of the detection window, and selecting a candidate configuration range of the window A range that can be adjusted to the value of the specific time and/or frequency position of the detection window - the detection effect obtained by arranging the detection window at any specific position within the candidate range is the same.
  • the candidate configuration range of the detection window means: since the position of the measurement window required for meeting a specific measurement item is not unique, the measurement The window can appear in a range. Therefore, the specific position of the detection window is determined according to the position of the time-frequency resource that can be given by the transmission channel.
  • the yield mentioned here refers to the transmission channel at a specific time position and a specific time.
  • the power reduction window is configured on the frequency interval.
  • Step A2 The radio frequency detection control unit determines the radio frequency data collection method used to complete the detection item, that is, determines one of the following radio frequency sample data collection methods:
  • the radio frequency sample data collection manner determines a manner in which the scheduler unit configures a power down window on the transmit channel.
  • the detection window parameter includes: a size of the detection window and a candidate configuration range thereof, and a radio frequency data collection manner corresponding to the detection item; after determining the detection window parameter according to the above steps, the process proceeds to step S102.
  • Step S102 in the second time interval, the radio frequency detection control unit determines, according to the parameter of the detection window, a power reduction window parameter of the transmission channel that interferes with the detection window;
  • the manner in which the transmit channel performs power reduction on the time-frequency resources in the power reduction window includes one of the following:
  • one way of reducing power transmission is: allocating time-frequency resource blocks that require reduced power transmission to off-transmitting a terminal whose distance is less than a predetermined distance threshold;
  • the specific method for determining, by the radio frequency detection control unit, the power reduction window parameter of the transmission channel that interferes with the detection window according to the parameter of the detection window includes determining the size of the power reduction window and determining the range of the power reduction window candidate configuration.
  • Step Bl the radio frequency detection control unit determines the size of the power reduction window and the candidate configuration range according to the size of the detection window and its candidate configuration range.
  • the specific implementation of determining the size of the power-down window (including the time scale and frequency scale) and the candidate configuration range (including the time range and frequency range) based on the size of the detection window and its candidate configuration range is:
  • the time scale of the power reduction window is determined by: determining a time interval covered by the power reduction window to be equal to or greater than a time interval covered by the detection window;
  • the frequency scale of the power reduction window is determined by: determining, according to a frequency band occupied by the transmission channel, a frequency of a sub-band whose interference power is greater than a predetermined threshold in the detection window is determined as a frequency of the power reduction window Domain width; the size of the frequency domain width of the power reduction window varies with the frequency scale in the candidate configuration range of the detection window;
  • the method for determining the time range of the candidate configuration range of the power reduction window is: using a time interval in the candidate configuration range of the detection window as a candidate time range of the power reduction window;
  • the frequency range of the candidate configuration range of the power reduction window is determined by: using a variation range allowed by the frequency scale of the power reduction window as a candidate frequency range of the power reduction window;
  • Step B2 The radio frequency detection control unit determines a manner of opening the power reduction window according to the radio frequency data collection manner
  • the manner of opening the power reduction window is one of the following ways:
  • a plurality of power reduction windows are opened in a frequency band in which the transmission channel is located, for example, a power reduction window is opened in one radio frame period, and Generating a power down window periodically or aperiodically over a plurality of radio frames;
  • step S103 After the power reduction window parameter is determined according to the above steps, the process proceeds to step S103.
  • Step S103 In the third time interval, the radio frequency detection control unit sends a power reduction window request to a scheduler unit to which the transmission channel that generates interference to the detection window belongs;
  • the method for transmitting the power reduction window request by the radio frequency detection control unit to the scheduler unit to which the transmission channel that generates interference to the detection window belongs is as follows:
  • the radio frequency detection control unit sends a power reduction window request to the scheduler unit to which the transmission channel that interferes with the detection window belongs by using the uplink radio channel of the radio terminal to which the radio frequency detection device belongs, and the uplink channel is one of the following: Scheduling request channel; uplink random access channel. ;
  • the radio frequency detection control unit transmits a power reduction window request through the network side channel between the scheduler unit to which the transmission channel that interferes with the detection window belongs.
  • the power reduction window request carries the parameter information of the power reduction window, which specifically includes:
  • the power reduction window request further includes priority information, and the priority information includes one of the following information:
  • Step S104 In the fourth time interval, the scheduler unit to which the transmission channel that generates the interference to the detection window belongs sends the power reduction window request confirmation information to the radio frequency detection control unit;
  • the scheduler unit to which the transmission channel that interferes with the detection window belongs sends the power-down window request confirmation information to the radio frequency detection control unit, it is divided into the following two methods according to the difference of the priority information:
  • the request to open the power down window sent by the radio frequency detection control unit includes a priority of "force the scheduler unit to open a power down window on the transmit channel” then the scheduler unit is on its controlled transmit channel upon receiving the request
  • the information of the power reduction window request the time scale and frequency scale of the power reduction window, the position of the power reduction window or the candidate configuration range, the appearance manner of the power reduction window, and the power reduction window is opened on the corresponding transmission channel
  • the radio frequency detection control unit sends a decrement window request confirmation message.
  • the sent power reduction window request confirmation message is one of the following information:
  • the power reduction window request confirmation information includes the confirmation indication information, indicating A power reduction window has been opened in accordance with the requested power reduction window parameter
  • the power reduction window request information includes the time scale and frequency scale of the power reduction window, the appearance mode of the power reduction window, and the uncertain parameters of the candidate position range of the power reduction window
  • the confirmation information further includes a location parameter of a specific power reduction window formulated by the scheduler unit
  • the specific implementation of the scheduler unit includes the following substeps. :
  • Step C1 The scheduler unit to which the transmission channel that interferes with the detection window belongs determines according to the power reduction window scale and the candidate configuration range included in the received power reduction window request information, and determines: 1) whether there is a resource that satisfies the requirement in the idle time-frequency resources owned by the transmission channel it controls;
  • An example of an unusable time-frequency resource is: All terminals served by the transmission channel are on Time-frequency resources for deep fading;
  • the idle resource of the transmission channel has a time-frequency resource block included in the zero-power transmission window in the candidate time-frequency location range of the requested time-frequency resource.
  • step C3 If the idle resource satisfies the requirement, the process proceeds to step C3. If the idle resource does not meet the requirement, the process proceeds to step C2.
  • Step C2 The scheduler unit determines whether resources required for the power reduction window can be provided by reducing the data transmission rate of some users or interrupting data transmission of some users for a short time. If yes, go to step C3; otherwise, send a message to the radio frequency detection control unit that rejects the power-down window.
  • Step C3 The scheduler unit sends the power reduction window confirmation information to the radio frequency detection control unit, and at least includes the following parameters: 1) a specific time-frequency position of the power-down window opened on the transmission channel; 2) the first appearance of the power-down window on the transmission channel time.
  • step S105 in the fifth time interval, the radio frequency detection control unit determines whether the power-down window request is confirmed according to the power-down window confirmation information sent by the scheduler unit, and if the power-down window request is confirmed, the process proceeds to step S106, otherwise, Step S107.
  • Step S106 In the sixth time interval, the radio frequency detection control unit determines a parameter of the final detection window according to the power reduction window parameter sent by the scheduler unit, and controls the radio frequency detection execution unit to complete the corresponding radio frequency detection item in the detection window;
  • Step D1 determining, according to the power-down window parameter sent by the scheduler unit by the power-down window request confirmation message, the newly-developed detection window parameter;
  • the power reduction transmission parameters sent by the scheduler unit include:
  • the newly opened detection window parameters are as follows:
  • the use of the detection window specifically refers to: single use, periodic use or other use;
  • Step D2 completing a specific radio frequency detection item in the detection window
  • the specific RF detection items are one or more of the following:
  • Signal power measurement on adjacent channels including: signal power or power spectral density measurement on adjacent channels, and/or signal power measurement and signal demodulation on adjacent channels, including demodulated signals on adjacent channels Beacon signals transmitted by transmitters in other geographical locations;
  • Step S107 The radio frequency detection control unit stops execution of the current radio frequency detection item.
  • the radio frequency detection control unit 400 terminates the current measurement.
  • the present invention further provides a method for determining the maximum transmission power of the transmission channel in real time, and the method for determining the maximum transmission power of the transmission channel in real time specifically includes the following sub-steps: Step E1: On the adjacent channel of the transmission channel, determine the detection window on the adjacent channel of the transmission channel according to steps S101 to S107, and the radio frequency detection control unit controls the radio frequency detection execution unit to perform signal power measurement in the detection window of the adjacent channel;
  • the detection window on the adjacent channel of the transmission channel When determining the detection window on the adjacent channel of the transmission channel, it is divided into the following two cases: If the existence time interval of the signal on the adjacent channel is already known, the detection window is arranged in a known time interval in which the signal exists. ;
  • the detection window is configured on all possible time intervals of the adjacent channel, for example, the time of the measurement window on the adjacent channel in the entire radio frame period of the transmission channel.
  • Step E2 determining interference power of the transmit channel that the adjacent channel can tolerate; the specific method is: according to the existing power P(a) of the adjacent channel and the required signal-to-interference ratio R(s/n) of the adjacent channel , determining the interference power P(noise) on which the adjacent channel can tolerate the transmission channel:
  • Step E3 determining a transmit power that the transmit channel can achieve when the leakage power value of the transmit channel on the adjacent channel is equal to the interference power P (noise) that the adjacent channel can tolerate is the maximum transmit power of the transmit channel;
  • the first method Calculate the maximum transmit power of the transmit channel by making real-time measurements of the transmit channel leakage power.
  • the measurement window of the transmission channel leakage power on the adjacent channel of the transmission channel is determined according to steps S101 to S107, and the leakage power P(acl) of the transmission channel in the adjacent channel is measured, and acquired in the adjacent The transmission power P(t) of the transmission channel when the leakage power P(acl) is generated on the channel.
  • the second method Calculate the maximum transmit power of the transmit channel by a priori data on the out-of-band leakage power of the transmit channel.
  • the leakage power P(acl)_unit over the bandwidth covered by the adjacent channel when the transmission channel is transmitted in one unit of power P(unit) is calculated.
  • K_unit P(noise)/ P(acl)_unit
  • the present invention further provides a corresponding radio frequency detecting apparatus for performing radio frequency detection on a channel in which adjacent frequency or co-channel interference exists;
  • the radio frequency detecting device is specifically a wireless access point having a radio frequency detecting function, and the device includes: a transceiver unit 301a, a radio frequency detecting and executing unit 403, and radio frequency detecting. Control unit 400, antenna unit 304, and interface unit 303a.
  • the transceiver unit 301a is designed in accordance with the technical specifications of the communication base station in the wireless communication protocol, and includes a baseband processing unit (BBU) 305a and a remote radio unit (RRU).
  • BBU baseband processing unit
  • RRU remote radio unit
  • the BBU and the RRU included in the transceiver unit 301a are implemented in two ways: the BBU and the RRU are integrated as an integrated physical device; the BBU and the RRU are deployed as separate physical devices in different geographical locations;
  • the scheduler unit 302 in the BBU 305a included in the transceiver unit 301a in addition to implementing the existing wireless communication protocol on the uplink and downlink channels of the transceiver unit 301a, dynamically assigns the terminal.
  • there is also a communication interface with the radio frequency detection control unit 400 and the generation of the power reduction window on the transmission channel of the transceiver unit 301a is controlled according to the request information of the radio frequency detection control unit 400;
  • the radio frequency detection control unit 400 in this embodiment is configured to control the radio frequency detection by the radio frequency detection execution unit 403 on the transmission channel controlled by the scheduler unit 302 or on the adjacent channel of the transmission channel, and the radio frequency detection control unit 400 also uses Transmitting, to the scheduler unit 302 in the transceiver unit, request information for opening a power down window on a transmit channel, and receiving acknowledgement information for a power down window request from a scheduler unit 302 in the transceiver unit;
  • the radio frequency detection control unit 400 is configured to determine a parameter of the detection window according to the measurement item, and determine a power reduction window parameter of the transmission channel that interferes with the detection window according to the parameter of the detection window; and is further configured to send a power reduction window to the transceiver unit. Requesting, and determining a newly developed detection window parameter according to the power reduction window parameter in the confirmation information requested by the power reduction window; and also for controlling the phase of the radio frequency detection execution unit 403 on the transmission channel controlled by the scheduler unit 302 or the transmission channel Radio frequency detection of radio frequency detection items on the adjacent channel.
  • the radio frequency detection executing unit 403 is configured to complete corresponding radio frequency detection in a newly opened detection window on a transmission channel controlled by the transceiver unit or on an adjacent channel of a transmission channel under the control of the radio frequency detection control unit. Radio frequency testing of the project.
  • the interface unit 303a is used for data transmission between the transceiver unit 301a and the network side, and transmission of measurement control and measurement data between the radio frequency detection control unit 400 and the radio frequency detection execution unit 403 and the network side.
  • the radio frequency detecting device is specifically a wireless terminal having a radio frequency detecting function, and the device includes: a transceiver unit 301b, a radio frequency detecting and executing unit 403, and a radio frequency detecting control unit. 400, antenna unit 304, interface unit 303b.
  • the transceiver unit 301b is designed according to the technical specifications of the communication terminal in the wireless communication protocol, and includes a baseband processing unit (BBU) 305b and a local radio frequency unit (LRU). Transceiver unit 301b Integrated BBU and LRU as a physical device for integrated design
  • the radio frequency detection control unit 400 in this embodiment is configured to control the radio frequency detection by the radio frequency detection execution unit 403 on the transmission channel in the transceiver unit 301 controlled by the scheduler unit 302 on the network side or on the adjacent channel of the transmission channel. Moreover, the radio frequency detection control unit 400 is further configured to send, to the network side scheduler unit 302, request information for opening a power reduction window on the transmission channel of the transceiver unit 301, and receiving confirmation information of the power reduction window request from the network side scheduler unit 302. .
  • the scheduler unit 302 on the network side transmits the transmission time of the channel by the transceiver unit 301 to the adjacent channel and/or the radio frequency detection execution unit 403.
  • the measurement time assignments on the channel are implemented over different time intervals.
  • the interface unit 303b is used for data transmission between the transceiver unit 301b and a device or network that communicates using the transceiver unit 301b.
  • the working process of the radio frequency detecting device of the present invention is:
  • the radio frequency detecting device configures a transmitting channel on the first frequency band, and the scheduler unit 302 assigns a downlink transmission resource to the terminal served by the radio frequency detecting device in the first frequency band, and further reduces the power according to the radio frequency detecting control unit 400.
  • the window request information opens a power reduction window on the first frequency band and/or the adjacent frequency band of the first frequency band, and sends the time position where the power reduction window appears to the radio frequency detection control unit 400, and the radio frequency detection control unit 400 appears in the power reduction window.
  • the detection window is configured on the time interval, and controls the radio frequency detection by the radio frequency detection execution unit 403 on the transmission channel controlled by the scheduler unit 302 or on the adjacent channel of the transmission channel.
  • the radio frequency detection execution unit 403 of the present invention comprises: a receiving channel processing unit 402, a parameter estimation and signal demodulating unit 403, and a measurement data storage unit 408.
  • the signal in the window performs low noise amplification and frequency conversion processing of the radio frequency signal;
  • Parameter estimation and signal demodulation unit performs parameter estimation on signals from the receiving channel processing unit Metering and/or signal demodulation;
  • the measurement data storage unit 408 is used to store the measurement results of the parameter estimation and signal demodulation unit 403.
  • radio frequency detection execution unit 403 includes the following units: an adjustable passband filter 401, a radio frequency power attenuator/coupler 405, a radio frequency switch 406, a receive channel processing unit 402, parameter estimation, and a signal solution.
  • An adjustable passband filter for receiving a radio frequency detection signal from the antenna unit
  • the radio frequency detection control unit 400 controls the center frequency and bandwidth of the adjustable passband filter 401 and the receiving channel processing unit 402 according to the control information sent by the network side, and controls the attenuation of the RF power attenuator/coupler 405.
  • the parameter estimation and operation mode of the signal demodulation unit 407 is controlled;
  • the RF power attenuator/coupler 405 is configured to perform RF signal power attenuation on the RF signal output by the adjustable passband filter 401, and the attenuated RF signal is input to the receiving channel processing unit 402 through the RF switch 406; In another embodiment of the present invention, the RF switch 406 is not included, and the signal output by the RF power attenuator/coupler 405 is directly sent to the receiving channel processing unit;
  • the radio frequency detecting apparatus is characterized in that it includes a radio frequency detecting execution unit 403 that configures a measurement window on an adjacent channel of a transmission channel of the transceiver unit 301 and requests a power reduction from a scheduler unit to which the transmission channel of the transceiver unit 301 belongs.
  • the radio frequency detection control unit 400 of the window is preferably characterized in that the radio frequency power attenuator/coupler 405 and the measurement data storage unit 408 are included in the receiving channel.
  • the radio frequency detection execution unit 403 and the radio frequency receiving channel processing unit 402 are implemented as follows:
  • the radio frequency detection is performed on the frequency band used by the transmission channel of the transceiver unit 301.
  • the radio frequency receiving channel of the unit 403 is implemented by the FDD system or the radio frequency receiving chip of the communication terminal of the terrestrial television broadcasting; on the adjacent channel of the transmitting channel of the transceiver unit 301, if the adjacent channel is the downlink of the FDD system or the terrestrial television broadcasting
  • the channel is implemented on the adjacent channel by the FDD system or the radio frequency receiving chip of the communication terminal of the terrestrial television broadcast; if the adjacent channel is the downlink channel of the TDD system, the radio frequency receiving of the TDD system terminal is used on the adjacent channel Chip implementation.
  • the radio frequency reception channel of the radio frequency detection execution unit 403 uses the radio frequency of the communication terminal of the TDD system.
  • Receiving chip implementation on the adjacent channel of the transmission channel of the transceiver unit 301, if the adjacent channel is the downlink channel of the FDD system or terrestrial television broadcasting, the communication terminal using the FDD system or the terrestrial television broadcasting on the adjacent channel.
  • the implementation of the radio frequency receiving chip if the adjacent channel is the downlink channel of the TDD system, the radio frequency receiving chip of the TDD system terminal is implemented on the adjacent channel.
  • the radio frequency detection execution unit 403 is installed at the antenna position of the base station or installed in the RRU of the base station;
  • the radio frequency detection execution unit 403 is installed at the location of the terminal or installed in the terminal;
  • the radio frequency detection control unit 400 is implemented by a digital processor, and the specific implementation manner is as follows:
  • radio frequency detection control unit 400 on the network side installed in the BBU of the base station or installed In the position of the BBU.
  • the radio frequency detection control unit 400b on the terminal side is installed in the terminal or at the position of the terminal;
  • FIG. 5 is a schematic structural diagram of a radio frequency detection system supporting adjacent channel radio frequency detection according to the present invention.
  • the system includes: a neighbor band measurement management unit 500, and a radio access point 300a with a radio frequency detection execution unit 403a, with radio frequency detection control.
  • the adjacent band measurement management unit 500 is a network element or a functional unit located on the network side, and the adjacent band measurement management unit 500 needs the radio frequency detection execution unit 403a in the wireless access point 300a and/or the radio frequency detection execution unit 403a in the wireless terminal 300b.
  • the implemented RF detection project is managed.
  • the specific management content includes one or more of the following:
  • the measurement result is received from the radio frequency detection execution unit 403a on the wireless terminal side and/or the radio frequency detection execution unit 403b on the radio terminal side.
  • the a priori information of the adjacent frequency band includes the channel width on the adjacent frequency band and the type of wireless technology used by the channel.
  • a working process for implementing the measurement of the adjacent frequency band by the system of the present invention is: the adjacent band measurement management unit 500 sends the detection item trigger information of the adjacent channel to the radio frequency detection control unit 400a and/or the radio frequency detection control unit 400b.
  • Information
  • the radio frequency detection control unit 400a and/or the radio frequency detection control unit 400b determine the detection window and the power reduction window according to the detected item trigger information and the a priori information of the adjacent channel; the radio frequency detection control unit 400a and/or the radio frequency detection control Unit 400b to scheduler unit 302 Sending a power reduction window request message;
  • the scheduler unit 302 transmits a power down window request confirmation message to the radio frequency detection control unit 400a and/or the radio frequency detection control unit 400b.
  • the scheduler unit 302 determines the position of the detection window from the radio frequency detection control unit 400a and/or the radio frequency detection control unit 400b according to the position of the power reduction window specified by the power reduction window request confirmation information, and performs the adjacent band measurement management unit in the detection window.
  • the data set required for the detection items sent by the 500 is collected, and the detection items are further completed, and the measurement results are reported to the adjacent band measurement management unit 500.
  • the neighboring band measurement management unit 500 assigns the maximum transmission power to the transmission channel of the wireless access point 300a and/or the wireless terminal 300b according to the measurement result of the radio frequency detection control unit 400a and/or the radio frequency detection control unit 400b, or is wireless access.
  • the transmit channel of point 300a and/or wireless terminal 300b is assigned a protection bandwidth.
  • the radio frequency channel included in the transceiver unit 301a is a radio frequency channel unit RRU designed according to the technical specifications of the LTE TDD base station, and the transmission channel of the channel unit It is configured on the first free frequency band of the television broadcast from 470 MHz to 790 MHz.
  • the transceiver channels of the transceiver unit 301a are all in the first free frequency band.
  • the baseband processing unit (BBU) 305a and its scheduler unit 302 included in the transceiver unit 301a are disposed on the network side, and the radio frequency detection control unit 400 is disposed in the baseband processing unit (BBU) 305a, and the radio frequency detection execution unit 403a and the transceiver unit 301a
  • the RF channel unit RRU is configured at the base station site.
  • the interface unit 303a is a communication interface designed in accordance with a standard communication interface CPRI interface.
  • the radio frequency detection control unit 400 There is a transmission channel between the radio frequency detection control unit 400 and the scheduler unit 302 that transmits a power down window parameter.
  • the scheduler unit 302 reduces the power requested by the radio frequency detection control unit 400.
  • the parameter of the window opens a power reduction window on the transmission channel whose control configuration is on the first idle frequency band, and the radio frequency detection control unit 400 confirms the information according to the power reduction window sent by the scheduler unit 302, through the standard communication interface CPRI
  • the radio frequency detection execution unit 403 transmits a measurement control instruction.
  • the radio frequency receiving channel processing unit 402 of the radio frequency detecting and executing unit 403a is implemented by the radio frequency receiving chip of the LTE TDD terminal and the radio frequency receiving channel chip of the terrestrial television broadcasting; wherein, the radio frequency receiving chip of the LTE TDD terminal
  • the radio frequency channel performs low noise amplification of the radio frequency signal on the first idle frequency band
  • the radio frequency receiving channel chip of the terrestrial television broadcast performs low noise amplification on the television broadcast signal in an adjacent frequency band of the first idle frequency band.
  • the parameter estimation and signal demodulation unit 407 of the radio frequency detection execution unit 403a includes a baseband processing chip of the LTE TDD terminal side baseband processing chip and the terrestrial television broadcast receiver.
  • the radio frequency detection execution unit 403 is installed in the RRU of the LTE TDD distributed base station;
  • the radio frequency channel included in the transceiver unit 301b is a radio frequency channel unit designed according to the technical specifications of the LTE TDD terminal, and the transmission channel of the channel unit is configured in the slave channel.
  • the transceiver channels of the transceiver unit 301b are all in the first idle frequency band, and establish a communication link with the transceiver unit 301a according to the air interface specification of the LTE TDD.
  • the baseband processing unit (BBU) 305b included in the transceiver unit 301b is a terminal side baseband processing chip implemented according to the LTE TDD technical specification.
  • the radio frequency detection control unit 400 is configured as a functional unit implemented by a digital processor, and the radio frequency detection execution unit 403b and The radio frequency detection control unit 400 is disposed in the terminal or at a location where the terminal is installed.
  • the interface unit 303b is a wired interface that communicates with the wireless local area network node.
  • the scheduler unit 302 on the network side opens the power down window on the first idle frequency band according to the following parameters, according to the parameter of the power reduction window requested by the radio frequency detection control unit 400b: 1) The time when the power reduction window appears The uplink resource is not configured for the terminal to which the radio frequency detection control unit 400b belongs in the interval and the frequency interval; 2) the other terminal configuration controlled by the scheduler unit 302 is not in the first idle frequency band in the time interval and the frequency interval in which the power reduction window occurs. Upstream resources.
  • the scheduler unit 302 sends the power reduction window confirmation information to the radio frequency detection control unit 400b through the receiving channel of the transceiver unit 301b, and the radio frequency detection control unit 400b controls the radio frequency detection execution according to the power reduction window confirmation information sent by the scheduler unit 302.
  • Unit 403b completes the specified measurement item within the corresponding detection window.
  • the radio frequency receiving channel processing unit 402b of the radio frequency detecting and executing unit 403b is implemented by the radio frequency receiving chip of the LTE TDD terminal and the radio frequency receiving channel chip of the terrestrial television broadcasting; wherein, the radio frequency receiving chip of the LTE TDD terminal
  • the radio frequency channel performs low noise amplification of the radio frequency signal on the first idle frequency band
  • the radio frequency receiving channel chip of the terrestrial television broadcast performs low noise amplification on the television broadcast signal in an adjacent frequency band of the first idle frequency band.
  • the parameter estimation and signal demodulation unit 407 of the radio frequency detection execution unit 403b includes a baseband processing chip of the LTE TDD terminal side baseband processing chip and the terrestrial television broadcast receiver.
  • the radio frequency detection execution unit 403b is installed in the LTE TDD terminal or is co-located with the terminal;
  • This embodiment provides an embodiment of the radio frequency detection system proposed by the present invention, specifically a wireless fixed access system for configuring a channel in an idle frequency band of a television broadcast frequency band, as shown in FIG. 5, and FIG. 6a and the system deployment manner are shown in FIG. Figure 6b.
  • the system shown in FIG. 5 is composed of: a neighboring band measurement management unit 500, one or more wireless access points 300a with radio frequency detection execution unit 403a, and a radio frequency detection control unit 400a.
  • BBU unit 305a one or more with RF detection execution Unit 403b and wireless terminal 300b of radio frequency detection control unit 400b.
  • the radio frequency channel included in the transceiver unit 301a is a radio frequency channel unit RRU designed according to the technical specifications of the LTE TDD base station, and the first idle frequency band in which the channel unit operates is located in an idle frequency band of the television broadcast at 470 MHz to 790 MHz.
  • the transceiver channels of the transceiver unit 301a are all in the first free frequency band.
  • the baseband processing unit (BBU) 305a and its scheduler unit 302a included in the transceiver unit 301a are disposed on the network side, the radio frequency detection control unit 400a and the scheduler unit 302a are disposed in a baseband processing unit (BBU) 305a, and the interface unit 303a is a CPRI. Standard communication interface.
  • the transceiver unit 301a of the wireless terminal 300b with the radio frequency detection execution unit is a transceiver unit designed according to the technical specifications of the LTE TDD terminal, and the first idle frequency band of operation is the same as that of the transceiver unit 301a, and the transceiver channel is also located at the same. On the first free frequency band in the range of 470MHz ⁇ 790MHz.
  • the adjacent band measurement management unit 500 is a functional unit for performing joint resource management on the network side.
  • the adjacent band measurement management unit 500 is implemented in an independent joint resource management device, and the joint resource management device is installed in The location of the BBU manages adjacent channel measurements in a distributed joint resource management manner.
  • Another implementation of the adjacent band measurement management unit 500 is to configure the traffic gateway/access gateway (SGW/AGW) location to implement adjacent channel measurement management in a centralized manner.
  • SGW/AGW traffic gateway/access gateway
  • the neighboring band measurement management unit 500 collects, stores and transmits the wireless technology type information of the working frequency band of each wireless access point and the adjacent frequency band of the working frequency band and the channel on the adjacent frequency band to the corresponding wireless connection at the network side.
  • the in-point and/or radio frequency detection control unit 400a/b of the wireless terminal, the adjacent band measurement management unit 500 transmits measurement management information to the radio frequency detecting unit 400a/b in the wireless access point 300a and/or the wireless terminal 300b.
  • the neighboring band measurement management unit 500 transmits a priori information of the adjacent band bandwidth 1/bandwidth 2 (BW1/BW2) to the radio frequency detecting unit 400a/b, including the bandwidth of BW1 and BW2 being 8 MHz, and the channel type.
  • the radio frequency detection control unit 400a/b determines the bandwidth of the receiving channel on BW1 and BW2 for the radio frequency detecting execution unit 403a/b, and the signal processing manner on BW1 and ring 2.
  • the system provided in this embodiment may also have the LTE TDD channel configured in the first idle frequency band to determine the adjacent band protection bandwidth under the management of the neighboring band measurement management unit 500.
  • the following example is given based on the embodiment.
  • the adjacent band measurement management unit 500 transmits an adjacent channel power measurement item indication to the radio frequency detection control unit 400a in the network side BBU, and the radio frequency detection control unit 400a in the network side BBU controls the radio frequency detection execution unit 403a in the wireless access point.
  • the television broadcast channel adjacent to the LTE TDD channel on the first idle frequency band performs signal power measurement, and reports the measurement result P(a) to the partial band measurement management unit 500.
  • the adjacent band measurement management unit 500 determines the interference power P(noise) that the adjacent channel can tolerate based on the existing power P(a) of the adjacent channel and the required signal-to-interference ratio R(s/n) of the adjacent channel:
  • the adjacent band measurement management unit 500 calculates the LTE TDD on the out-of-band leakage power curve according to the out-of-band leakage power curve obtained by the conventional measurement or according to the technical specifications of the LTE TDD transmission channel, see 201 in the curve given in FIG.
  • the transmission channel is in a frequency band BW (TV) having a bandwidth equal to the bandwidth of the television broadcast channel.
  • BW television
  • the out-of-band leakage P(acl) 210 is equal to the maximum interference power P (noise) that the television broadcast channel can tolerate, BW (TV)
  • the center frequency is f3.
  • the adjacent band measurement management unit 500 determines the width BW (guard) of the guard band based on the distance between the center frequency f3 of the BW (TV) and the center frequency fl of the LTE TDD transmission channel.
  • D_fl/f3 is the distance between the channel center frequency fl deployed on the first idle frequency band and the center frequency of the existing television channel.
  • Channel center frequency and current deployed on the idle frequency band The guard bandwidth BG(guard) of the memory channel is equal to subtracting one-half of the channel bandwidth 215 (denoted as B2) on the idle frequency band from D_(fl ⁇ f2) and the existing channel bandwidth 205 (denoted as B1). The sum of one.
  • the radio frequency detection method disclosed by the present invention utilizes the dynamic management capability of the scheduler unit to match the measurement window on the transmission channel controlled by the scheduler unit, thereby flexibly opening up a zero power transmission window.
  • the scheduler unit and the measurement unit in the detecting apparatus of the present invention have a transmission channel for transmitting measurement window information and/or zero power transmission window information, and the radio frequency detecting unit can realize the method of opening a zero power window according to the present invention.
  • Measurement of the existing wireless channel signal power and/or information demodulation on adjacent channels of the local transmit channel may also enable on-line measurement of out-of-band leakage power and/or transmit power to the local transmitter.
  • the radio frequency detection system provided by the present invention can adaptively determine the width of the guard band between its working channel and the adjacent channel transmitted by the different station.

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Abstract

本发明公开了一种射频检测的方法、装置及系统，本发明射频检测方法利用调度器单元对时频资源的动态管理能力在其控制的发射信道上配合测量窗口的需要，实现灵活地开辟零功率发射窗口。检测装置的特点是调度器单元与测量单元存在传输测量窗口信息和/或零功率发射窗口信息的传输通道，射频检测单元按照本发明开辟零功率窗口的方法，既可以实现对本地发射信道的相邻信道上的现有无线信道信号功率的测量和/或信息解调，也可以实现对本地发射机的带外泄漏功率和/或发射功率的在线测量。本发明射频检测系统可利用本发明方法自适应地确定其工作信道与异站址发射的相邻信道间的保护频带的宽度。

Description

射频检测方法、 装置及系统 技术领域
本发明涉及无线通信技术领域， 尤其涉及射频检测方法、 装置及系统。 背景技术
利用空闲频带动态地部署通信信道， 或者在处于同一个地理区域内以 邻频方式部署不同的通信系统， 都需要解决一个共同的问题： 抑制系统间 的邻频干扰。 而对邻频干扰的控制， 最简单的方法是在相邻频带之间保留 足够的保护频带， 但是这种方法的缺点是频谱使用率较低。 为了高效利用 频谱， 需要无线通信系统自动识别可用空闲频带并且自适应地配置保护带 宽度， 发射功率等参数， 而这些能力的实现， 都需要对无线环境的实时认 知， 实时认知无线环境需要对特定频带上的功率谱分布及特定频带上的射 频装置的性能进行检测、 估计。 对射频检测， 或者无线环境认知的测量方 法及装置现有技术如下：
中国专利申请号为 CN200610011235.6,发明名称为"一种频段信息搜集 系统和方法"的专利申请公开了如下技术内容： 给出的频段信息系统可包括 若干个频段测量装置、 若干个频段信息搜集和管理装置、 若干个无线通信 基站 (或接入点)、 若干个基站控制器、 若干个终端。 频段信息搜集方法包括 四个基本步骤： 步骤一， 频段信息搜集和管理装置搜集来自不同网络的频 段先验信息； 步骤二， 频段信息搜集和管理装置启动频段信息测量； 步骤 三， 频段信息搜集和管理装置搜集频段测量信息； 步骤四， 频段信息搜集 和管理装置分析出频段整体信息。 该申请的技术方案可降低终端在频段信 息搜集上的功耗、 时间和复杂度开销， 且还可实现多频段通信引导， 使网 络侧掌握特定区域内频段的使用情况和空闲情况， 协助终端快速选用合适 的工作频段。
频段测量装置的测量包括如下基本内容： 1 )对运营频段的测量， 包括 测量运营频段内空闲时隙的测量， 掌握特定系统的工作频段中， 有哪些时 隙是处于空闲状态； 空闲时段的测量， 掌握特定系统的工作频段中， 哪些 时段是空闲的， 如数字电视广播对频段的使用， 在一天内是会发生变化的。 这些数据作为系统引导终端准确选择可用频段、 获取所需业务以及系统灵 活使用频谱和进行频谱环境监测的基础； 2 )对空闲频段的测量， 包括空闲 的确认测量， 空闲频段内的干扰测量， 这些数据作为系统灵活使用频谱和 频谱环境监测的基础； 3 )对频段内信号参量的测量， 如： 测量特定频段内 特定信号与特定基站信号之间的到达时间差， 该参数帮助接入到特定基站 的终端快速捕获其需的信号； 不同运营商基站在 TDD模式下基站下行时隙 之间的同步关系， 特别是不同运营商的基站（ TDD基站或者 TDD/FDD混 合双工基站）共站址时下行时隙间的同步关系 （即两个发射天线之间发射 信号到达时间差 TDOA )进行测量； 4 )业务类型的测量， 如， 测量各个广 播频段上当前的广播信息和广播业务内容， 实时地获取广播业务的频道、 节目内容、 信号质量等数据。 具体测量项目根据频段信息搜集， 由管理装 置发给测量装置。
美国专利申请号为 US20080075059A1 , 发明名称为 "Method and apparatus for reducing the guard band between wireless communication systems operating in the same geographical area: 降氐在同一地理区域内无线通信系 统间保护带宽的方法及装置" 的专利申请公开了如下技术内容： 为了降低 在同一地理区域内工作的第一无线通信系统与第二无线通信系统间的保护 带宽釆用如下方法： 第一无线通信系统中的第一无线接入点发送信标信号 ( beacon signal ) ； 第二无线通信系统的第二无线接入点在第二无线通信系 统的频段内扫描； 检查第一无线接入点对第二无线接入点的干扰； 运行第 二无线接入点， 如果来自第一无线接入点的干扰没有超出可接受的门限。 进一步地， 在指定频带上发送信标信号， 在与指定频带相邻的第二频段上 进行扫描。 该专利申请给出的一个终端， 或者无线节点， 或者无线装置包 括： 一个或者多个信号准备模块， 配置为用于为第一无线系统准备发射信 号； 在第一无线系统内的一个或者多个提供模块， 配置为提供准备发射的 信号； 一个或者用于所述信号发射的发射模块； 在第一和第二无线通信系 统中存在一个或者多个接收模块， 一个或者多个检测模块用于检测第一无 线通信系统对第二无线通信系统的干扰； 一个或者多个工作模块在第一无 线通信系统对第二无线通信系统的干扰没有超过可容忍门限时使第二无线 系统运行。
所述一个或者多个准备模块配置为准备无线信标； 所述一个或者多个 检测模块进一步包括一个或者多个耦合损失模块用于计算第一与第二无线 通信系统间的耦合损失； 所述一个或者多个检测模块进一步地包含一个或 者多个干扰计算模块来计算第一系统对第二系统的干扰；
所述第一与第二无线系统由同一个运营商运营的位于同一个地理区域 内且工作在相邻频带上的系统。 通过定期扫描相邻频带或者信标信号， 根 据在第一第二无线通信系统中的终端， 节点的发射信号功率来估计信号的 强度以及耦合损失。 根据计算结果， 无线通信系统做如下调整： （a)干扰低 于可接受门限， 则无线系统正常工作； （b)干扰高于可接受门限， 则无线通 信系统调整发射功率， 天线方向图使干扰降到可接受门限以下； （c)或者， 两个无线通信系统都降低发射功率。
中国专利申请号为 CN200610011235 , CN200610152441.9和美国专利 申请号为 US20080075059A1的专利申请所公开的技术方案存在如下缺点： 免新加入的信道与现有信道之间的干扰以及实现用于设备故障定位的内置 测量（Built In Test, BIT )所需要的； 所述避免邻信道干扰的方法需要计算 路径损耗， 实现复杂且难以准确控制信道间的干扰。 发明内容
有鉴于此， 本发明的主要目的在于提供一种射频检测方法、 装置及系 的， 本发明的技术方案是这样实现的：
一种射频检测方法， 该方法包括：
射频检测控制单元根据测量项目确定检测窗口的参数；
射频检测控制单元根据检测窗口的参数确定对检测窗口产生干扰的发 射信道的降功率窗口参数；
射频检测控制单元向对检测窗口产生干扰的发射信道所属的调度器单 元发送降功率窗口请求；
所述调度器单元向射频检测控制单元发送降功率窗口请求确认信息； 射频检测控制单元根据所述调度器单元反馈的降功率窗口请求确认信 息判断降功率窗口请求是否得到确认， 若得到确认， 则射频检测控制单元 根据调度器单元反馈的降功率窗口参数确定新开辟的检测窗口参数， 并控 制射频检测执行单元在所述新开辟的检测窗口内完成相应的射频检测项 目； 若未得到确认， 则射频检测控制单元停止本次射频检测项目的执行。
所述检测窗口的参数包括： 检测窗口的大小、 检测窗口的侯选配置范 围、 射频数据釆集方式， 所述确定检测窗口的参数方法为： 所述检测窗口 的大小根据检测项目进行一次射频样本数据釆集所需要覆盖的时间和频率 的二维尺度来确定； 所述检测窗口的侯选配置范围根据能够获得等价的射 频样本数据的检测窗口的位置集合来确定； 所述射频数据釆集方式为： 通 过单次射频样本数据釆集完成测量和通过多次射频样本数据釆集完成测量 中的一种。
优选地， 所述根据检测窗口的参数确定对检测窗口产生干扰的发射信 道的降功率窗口参数包括： 对降功率窗口的大小的确定、 降功率窗口候选 配置范围的确定及降功率窗口开辟方式的确定；
降功率窗口大小的确定方法为： 将降功率窗口覆盖的时间区间确定为 等于或者大于所述检测窗口覆盖的时间区间； 将位于发射信道所占用的频 带上的， 其发射功率对所述检测窗口内产生的干扰强度大于预定门限的子 频带的宽度确定为降功率窗口的频域宽度， 即降功率窗口大小；
降功率窗口候选配置范围的确定方法为： 将所述检测窗口的候选配置 范围中的时间区间作为降功率窗口的候选时间范围； 将降功率窗口的频率 尺度所容许的变化范围作为降功率窗口的候选频率范围， 即作为降功率窗 口候选配置范围；
降功率窗口开辟方式的确定方法为： 对于单次射频样本数据釆集方式， 在一次测量事件中只在发射信道所在频带上开辟一次降功率窗口； 对于多 次射频样本数据釆集方式， 在一次测量事件中在发射信道所在频带上开辟 多次降功率窗口。
优选地， 所述向对检测窗口产生干扰的发射信道所属的调度器单元发 送降功率窗口请求的方式为：
射频检测控制单元通过其所属无线终端的上行无线信道向对检测窗口 产生干扰的发射信道所属的调度器单元发送降功率窗口请求， 或射频检测 控制单元通过与对检测窗口产生干扰的发射信道所属的调度器单元之间的 网络侧通道发送降功率窗口请求；
所述降功率窗口请求携带降功率窗口参数信息， 具体包括降功率窗口 的时间尺度和频率尺度、 降功率窗口的位置或候选配置范围、 降功率窗口 的开辟方式或出现方式。
优选地， 所述降功率窗口请求还携带优先级信息， 所述优先级信息用 于指示： 强制调度器单元在发射信道上开辟降功率窗口， 或由调度器单元 视当前的业务情况决定是否在发射信道上开辟降功率窗口。
优选地， 根据所述优先级信息的不同， 所述调度器单元向射频检测控 制单元发送降功率窗口请求确认信息的方式为：
若所述优先级信息指示强制调度器单元在发射信道上开辟降功率窗 口， 则所述调度器单元在其控制的发射信道上按照降功率窗口请求所包含 的信息开辟降功率窗口， 并向射频检测控制单元发送降功率窗口请求确认 信息；
若所述优先级信息指示由调度器单元视当前的业务情况决定是否在发 射信道上开辟降功率窗口， 则所述调度器单元根据所述降功率窗口请求中 包含的降功率窗口尺度和候选配置范围判断， 在其所控制的发射信道所拥 有的空闲时频资源或无法使用的时频资源中是否存在满足要求的资源， 若 不存在满足要求的资源， 则判断是否能够通过降低某些用户的数据传输速 率或者短时中断某些用户的数据传输提供降功率窗口所需的资源； 当降功 率窗口所需的资源满足时， 所述调度器单元向所述射频检测控制单元发送 降功率窗口确认信息， 否则发送拒绝开辟降功率窗口的信息。
优选地， 所述的射频检测项目包括以下射频检测项目中的一种或多种： 相邻信道上的信号功率测量；
相邻信道上空闲时隙的测量；
相邻信道上的信号的带外泄漏功率测量；
对发射通道带外泄漏功率的测量；
对发射通道最大发射功率进行测量。
优选地， 在网络侧的调度器单元根据终端侧射频检测控制单元的降功 率窗口请求为射频检测执行单元开辟上行信道的相邻信道的降功率窗口 时， 在降功率窗口出现的时间区间和频率区间内不为射频检测控制单元所 属的终端配置上行资源； 在降功率窗口出现的时间区间和频率区间内不在 第一空闲频带上为所述调度器单元所控制的其它终端配置上行资源； 所述调度器单元将降功率窗口确认信息通过收发信单元的接收信道发 送给射频检测控制单元， 射频检测控制单元根据调度器单元发来的降功率 窗口确认信息， 控制射频检测执行单元在对应的检测窗口内完成指定的测 量项目。
基于本发明提出的射频检测方法， 本发明还提出一种实时确定发射信 道最大发射功率的方法， 该方法包括：
在发射信道的相邻信道上， 按照权利要求 1 所述的射频检测方法确定 在所述相邻信道上的发射信道泄漏功率的测量窗口， 测量发射信道在相邻 信道上的泄漏功率 P(acl),并获取在相邻信道上产生泄漏功率时的发射信道 的发射功率 P(t);
计算所述相邻信道能容许的干扰功率 P(noise)与发射信道在所述相邻 信道的泄漏功率 P(acl)的比值 K;
将所述发射信道的发射功率 P(t)与所述比值 K乘积确定为发射信道最 大发射功率。
本发明还提出一种射频检测装置用于实现本发明提出的射频检测方 法， 该装置包括天线单元， 进一步还包括：
收发信单元， 用于根据射频检测控制单元的请求控制收发信单元的发 射信道上的降功率窗口的产生；
射频检测控制单元， 用于根据测量项目确定检测窗口的参数， 并根据 检测窗口的参数确定对检测窗口产生干扰的发射信道的降功率窗口参数； 还用于向收发信单元发送降功率窗口的请求， 并根据降功率窗口请求的确 认信息中的降功率窗口参数确定新开辟的检测窗口参数； 还用于对所述射 频检测执行单元进行控制；
射频检测执行单元， 用于在所述射频检测控制单元的控制下在所述收 发信单元所控制的发射信道上或者发射信道的相邻信道上的新开辟的检测 窗口内完成相应的射频检测项目的射频检测；
接口单元， 用于收发信单元与网络侧之间的数据传输， 以及射频检测 控制单元和射频检测执行单元与网络侧之间的测量控制和测量数据的传 输。
优选地， 所述装置还包括： 调度器单元， 位于所述收发信单元中或位 于网络侧， 用于接收所述射频检测控制单元发送的降功率窗口请求， 并根 据射频检测控制单元提供的检测窗口参数确定降功率窗口参数， 并向射频 检测控制单元发送降功率窗口请求确认信息， 所述降功率窗口请求确认信 息包含降功率窗口参数。
优选地， 所述射频检测执行单元包括：
可调通带滤波器， 用于在所述射频检测控制单元的控制下对从天线单 元接收射频检测信号进行带通滤波；
射频功率衰减器 /耦合器， 用于在所述射频检测控制单元的控制下对所 述可调通带滤波器输出的射频信号进行射频信号功率衰减， 经衰减后的射 频信号输入到接收通道处理单元；
接收通道处理单元， 用于在所述射频检测控制单元的控制下在发射通 道和 /或发射通道的相邻信道上进行射频信号的低噪放大和变频处理；
参数估计及信号解调单元， 用于在所述射频检测控制单元的控制下对 来自接收通道处理单元的信号进行参数估计和 /或信号解调；
测量数据存储单元， 用于存储参数估计及信号解调单元的测量结果。 基于本发明提出的射频检测装置， 本发明还提出一种射频检测系统， 该系统包括：
基于本发明提出的射频检测装置实现的无线接入点及无线终端； 邻频带测量管理单元， 位于网络侧， 用于对所述无线接入点中的射频 检测项目进行管理， 具体的管理内容包括如下之一种或多种： 向所述无线接入点和 /或无线终端侧的射频检测控制单元发送所述无线 接入点和 /或无线终端的发射信道的相邻信道的先验信息；
向所述无线接入点和 /或无线终端侧的射频检测控制单元发送检测项目 触发信息；
从所述无线接入点和 /或无线终端侧的射频检测控制单元接收测量结 果。
基于本发明提出的射频检测系统， 本发明还提出一种邻频带保护带宽 确定方法， 该方法包括：
邻频带测量管理单元向在网络侧基带处理单元 BBU中的射频检测控制 单元发送相邻信道功率测量项目指示， 网络侧 BBU中的射频检测控制单元 控制无线接入点中的射频检测执行单元对与第一空闲频带上的长期演进时 分双工 LTE TDD信道相邻的电视广播信道进行信号功率测量， 并将此测量 结果？( )上^艮给邻频带测量管理单元；
邻频带测量管理单元根据所述相邻信道的现有功率 P(a)和所述相邻信 道需要的信干比 R(s/n),确定相邻信道容许的干扰功率 P(noise)= P(a)/R(s/n) 邻频带测量管理单元根据测量获得的或者根据 LTE TDD发射信道的技 术规范得到的带外泄漏功率曲线， 在所述带外泄漏功率曲线上计算 LTE TDD发射信道在带宽等于所述电视广播信道带宽的频带 BW(TV), 在指定 的发射功率下， 带外泄漏 P(acl)等于所述电视广播信道可容许的最大干扰功 率 P(noise)时 BW(TV)的中心频率 f3;
邻频带测量管理单元根据 BW(TV)的中心频率 β与 LTE TDD发射信道 的中心频率 fl间的距离来确定保护带宽 BW(guard)。
本发明在射频测量方法上， 利用现有系统的调度器单元对时频资源的 动态管理能力在其控制的发射信道上配合测量窗口的需要， 实现灵活地开 辟零功率发射窗口。 在测量装置上， 本发明给出包含射频检测单元的通信 装置的结构， 结构的特点是调度器单元与测量单元存在传输测量窗口信息 和 /或零功率发射窗口信息的传输通道， 所述射频检测单元按照本发明给出 的开辟零功率窗口的方法， 既可以实现对本地发射信道的相邻信道上的现 有无线信道信号功率的测量和 /或信息解调， 也可以实现对本地发射机的带 外泄漏功率和 /或发射功率的在线测量， 其测量结果可用于如下目的之一种 或多种： 1)本地发射信道的相邻信道上存在的空闲时隙； 2 )确定在空闲频带 上的无线信道与与之相邻的现有无线信道之间的保护频带宽度； 3 ) 实现 BIT(Built In Test: 内置测量， 用于设备故障定位)。 在系统上， 本发明给出 包含本发明所述的带有射频检测单元的装置和邻频带 /部信道测量管理单元 的系统， 所述系统可利用本发明所述方法自适应地确定其工作信道与异站 址发射的相邻信道间的保护频带的宽度。 附图说明
图 1为本发明提出的一种射频检测方法流程图；
图 2a-图 2c为测量窗口与降功率窗口示意图；
图 3a-图 3b为本发明提出的射频检测装置的结构示意图；
图 4为本发明一种射频检测执行单元的结构示意图；
图 5为本发明一种支持相邻信道射频检测的射频检测系统结构示意图； 图 6a-图 6b为本发明一种根据相邻信道的状态来配置其发射信道参数 的无线固定接入系统示意图；
图 7为本发明泄漏功率与相邻信道上的信号功率相对强度决定保护带 宽宽度的示意图。 具体实施方式
为使本发明的目的、 技术方案和优点更加清楚明白， 以下举实施例并 参照附图， 对本发明进一步详细说明。
图 1 为本发明提出的一种在检测窗口内存在干扰的情况下进行射频检 测的方法流程图， 该检测方法用于清除检测窗口内的同频和 /或邻频干 ·ί尤， 提高射频检测的精确度。 所述方法包括如下步骤：
步骤 S101、 在第一时间区间内， 射频检测控制单元根据测量项目确定 检测窗口的参数；
本发明射频检测装置中的射频检测控制单元根据需要执行的射频检测 项目确定检测窗口的参数， 所述需要执行的射频检测项目是如下项目之一 种或者多种的组合：
1 )对存在邻频或者同频干扰的信道进行射频信号功率测量， 或者对信 号功率谱测量；
2 )对存在邻频或者同频干扰的信道进行带外泄漏功率测量， 或者对带 外泄漏功率谱测量；
3 )对存在邻频或者同频干扰的信道进行参数估计， 包括对信道上存在 的一个或者多个信号的参数；
4 )对存在邻频或者同频干扰的信道进行信号解调或解码；
射频检测控制单元根据需要执行的射频检测项目确定检测窗口的参数 的具体方法是：
步骤 A1: 射频检测控制单元确定检测窗口的大小及其侯选配置范围； 射频检测控制单元确定检测窗口的大小的具体方法是： 根据检测项目 确定进行一次射频样本数据釆集所需要覆盖的时间和频率的二维尺度， 一 次射频样本数据釆集所覆盖的时间和频率的二维尺度就是本发明所述的检 测窗口。 优选地， 确定检测窗口的候选配置范围， 检测窗口的候选配置范 围即一个可以对检测窗口的具体时间和 /或频率位置的取值进行调整的范围 ——将检测窗口配置在候选范围内的任何一个具体位置上得到的检测效果 相同。
检测窗口的二维尺度， 具体地， 包括测量窗口覆盖的频带宽度和出现 的时间长度； 检测窗口的侯选配置范围是指： 由于满足特定测量项目所需 要的测量窗口的位置不是唯一的， 测量窗口可以在一个范围内出现， 因此， 检测窗口的具体位置要根据发射信道可以让出的时频资源的位置来确定， 这里所述的让出是指发射通道在特定的时间位置和特定的时频区间上配置 降功率窗口。
步骤 A2: 射频检测控制单元确定完成检测项目所釆用的射频数据釆集 方式， 即确定是如下射频样本数据釆集方式之一种：
1 )通过单次射频样本数据釆集完成测量；
2 )通过多次射频样本数据釆集完成测量；
所述射频样本数据釆集方式决定发射信道所述调度器单元配置降功率 窗口的方式。
所述的检测窗口参数包括： 检测窗口的大小及其侯选配置范围、 检测 项目对应的射频数据釆集方式； 根据上述步骤确定了检测窗口参数后， 即 进入步骤 S102。
步骤 S102, 在第二时间区间内， 射频检测控制单元根据检测窗口的参 数确定对检测窗口产生干扰的发射信道的降功率窗口参数；
发射信道在降功率窗口内的时频资源上进行降功率发射的方式包括如 下之一种：
1 )在降功率窗口内的所有时频资源块上以零功率发射； 一种降功率发射的方式是： 将需要降功率发射的时频资源块分配给离发射 机的距离小于预定距离门限的终端；
3 )在降功率窗口内的第一部分时频资源块上， 以零功率发射； 在降功 率窗口内的第二部分时频资源块上， 以降功率发射。
射频检测控制单元根据检测窗口的参数确定对检测窗口产生干扰的发 射信道的降功率窗口参数的具体方法包括对降功率窗口的大小的确定和降 功率窗口候选配置范围的确定， 具体实现步骤如下：
步骤 Bl、 射频检测控制单元根据检测窗口的大小及其侯选配置范围确 定降功率窗口的大小和候选配置范围。
根据检测窗口的大小及其侯选配置范围确定降功率窗口的大小 （包括 时间尺度和频率尺度）和候选配置范围 （包括时间范围和频率范围） 的具 体实现是：
降功率窗口的时间尺度的确定方法是： 将降功率窗口覆盖的时间区间 确定为等于或者大于检测窗口覆盖的时间区间；
降功率窗口的频率尺度的确定方法是： 将位于发射信道所占用的频带 上的， 其发射功率对所述检测窗口内产生的干扰强度大于预定门限的子频 带的宽度确定为降功率窗口的频域宽度； 该降功率窗口的频域宽度的大小 随检测窗口候选配置范围中的频率尺度的变化而变化；
降功率窗口的候选配置范围的时间范围的确定方法是： 将检测窗口的 候选配置范围中的时间区间作为降功率窗口的候选时间范围；
降功率窗口的候选配置范围的频率范围的确定方法是： 将降功率窗口 的频率尺度所容许的变化范围作为降功率窗口的候选频率范围；
步骤 B2、 射频检测控制单元根据射频数据釆集方式确定降功率窗口的 开辟方式；
具体地， 降功率窗口的开辟方式是如下方式之一种：
1 )对于单次射频样本数据釆集就可以完成的检测， 在一次测量事件中 只在发射信道所在频带上开辟一次降功率窗口；
2 )对于需要多次射频样本数据釆集才可以完成的检测， 在一次测量事 件中在发射信道所在频带上开辟多次降功率窗口， 比如， 在一个无线帧周 期内开辟一个降功率窗口， 并且在多个无线帧上周期或者非周期地开辟降 功率窗口；
根据上述步骤确定了降功率窗口参数后， 即进入步骤 S103。
步骤 S103、 在第三时间区间内， 射频检测控制单元向对检测窗口产生 干扰的发射信道所属的调度器单元发送降功率窗口请求；
射频检测控制单元向对检测窗口产生干扰的发射信道所属的调度器单 元发送降功率窗口请求的发送方式是如下之一种：
1 )射频检测控制单元通过其所属射频检测装置所属无线终端的上行无 线信道向对检测窗口产生干扰的发射信道所属的调度器单元发送降功率窗 口请求， 这里的上行信道是如下之一种： 上行调度请求信道； 上行随机接 入信道。；
2 )射频检测控制单元通过其与对检测窗口产生干扰的发射信道所属的 调度器单元之间的网络侧通道发送降功率窗口请求。
降功率窗口请求中携带降功率窗口参数信息， 具体包括：：
1 ) 降功率窗口的时间尺度和频率尺度， 即降功率窗口的大小；
2 ) 降功率窗口的位置或候选配置范围；
3 ) 降功率窗口的开辟方式或出现方式。
优选地， 在降功率窗口请求还包括优先级信息， 该优先级信息包含如 下信息之一：
1 ) 强制调度器单元在发射信道上开辟降功率窗口；
2 )由调度器单元视当前的业务情况决定是否在发射信道上开辟降功率 窗口。 步骤 S104, 在第四时间区间内， 对检测窗口产生干扰的发射信道所属 的调度器单元向射频检测控制单元发送降功率窗口请求确认信息；
对检测窗口产生干扰的发射信道所属的调度器单元向射频检测控制单 元发送降功率窗口请求确认信息时， 根据优先级信息的不同分为如下两种 方式实施：
如果射频检测控制单元发送的开辟降功率窗口的请求包含的优先级是 "强制调度器单元在发射信道上开辟降功率窗口 "则调度器单元在接收到所 述请求后在其控制的发射信道上按照降功率窗口请求所包含的信息： 降功 率窗口的时间尺度和频率尺度、 降功率窗口的位置或候选配置范围、 降功 率窗口的出现方式， 在相应的发射信道上开辟降功率窗口， 并向射频检测 控制单元发送降功率窗口请求确认信息。 发送的降功率窗口请求确认信息 是如下信息之一种：
1 )在降功率窗口请求包含的是降功率窗口的时间尺度和频率尺度、 降 功率窗口的位置、 降功率窗口的出现方式这些确定的参数时， 降功率窗口 请求确认信息包括确认指示信息， 表明已经按照所请求的降功率窗口参数 开辟了降功率窗口；
2 )在降功率窗口请求信息包含的是降功率窗口的时间尺度和频率尺 度、 降功率窗口的出现方式这些确定的参数和降功率窗口的候选位置范围 这些不确定的参数时， 降功率窗口请求确认信息进一步包括调度器单元制 定的具体的降功率窗口的位置参数；
如果射频检测控制单元发送的开辟降功率窗口的请求包含的优先级是 "由调度器单元视当前的业务情况决定是否在发射信道上开辟降功率窗口" 则调度器单元的具体实施包括如下子步骤：
步骤 Cl、 对检测窗口产生干扰的发射信道所属的调度器单元根据其收 到的降功率窗口请求信息包含的降功率窗口尺度和候选配置范围， 判断： 1 )在其所控制的发射信道所拥有的空闲时频资源中是否存在满足要求 的资源；
2 )在其所控制的发射信道所拥有的无法使用的时频资源中是否存在满 足要求的资源， 一种无法使用的时频资源的例子是： 发射信道所服务的所 有终端都在其上处于深度衰落的时频资源；
所述满足要求是指： 发射信道的空闲资源在请求的时频资源的候选时 频位置范围内存在零功率发射窗口包含的时频资源块。
如果空闲资源满足要求， 则进入步骤 C3、 如果空闲资源不满足要求， 则进入步骤 C2。
步骤 C2、 调度器单元判断是否可以通过降低某些用户的数据传输速率 或者短时中断某些用户的数据传输来提供降功率窗口所需要占用的资源。 如果可以， 则进入步骤 C3; 否则， 就向射频检测控制单元发送拒绝开辟降 功率窗口的信息。
步骤 C3、 调度器单元向射频检测控制单元发送降功率窗口确认信息， 至少包括如下参数： 1 )发射信道上开辟的降功率窗口的具体时频位置； 2 ) 发射信道上降功率窗口的首次出现时间。 步骤 S105、 第五时间区间内， 射频检测控制单元根据调度器单元向其 发送的降功率窗口确认信息判断降功率窗口请求是否得到确认， 如果降功 率窗口请求得到确认， 则进入步骤 S106, 否则进入步骤 S107。
步骤 S106, 在第六时间区间内， 射频检测控制单元根据调度器单元发 送的降功率窗参数确定最终的检测窗口的参数， 并控制射频检测执行单元 在检测窗口内完成相应的射频检测项目；
具体的实现步骤是如下子步骤：
步骤 D1、 根据调度器单元通过降功率窗口请求确认消息发送的降功率 窗参数确定出新开辟的检测窗口参数； 调度器单元发来的降功率发射参数包括：
1 )发射信道上降功率窗口的具体位置；
2 )发射信道上降功率窗口首次出现时间。
新开辟的检测窗口参数如下：
1 )检测窗口的具体位置；
2 )检测窗口的首次使用时间；
3 )检测窗口的使用方式。 检测窗口的使用方式具体指： 单次使用， 周 期使用或者以其他方式使用；
步骤 D2、 在检测窗口内完成特定的射频检测项目；
具体的射频检测项目是如下之一种或多种：
1 )相邻信道上的信号功率测量， 包括： 相邻信道上信号功率或功率谱 密度测量， 和 /或相邻信道上信号功率测量和信号的解调， 解调信号包括相 邻信道上由其它地理位置上的发射机发射的信标信号；
2 )相邻信道上空闲时隙的测量， 参见图 2(b)中在相邻信道带宽 205上 存在的空闲时隙 204;
3 )相邻信道上的信号的带外泄漏功率测量， 具体地， 在图 2(c)给出的 降功率窗口 210内， 在测量窗口 212上测量相邻信道的带外泄漏功率；
4 )对发射通道带外泄漏功率的测量， 具体地， 在相邻信道上空闲时隙 204对应的时间区间内， 测量发射信道上的发射信号 202的带外泄漏功率；
5 ) 实时对发射通道最大发射功率进行测量。
步骤 S107, 射频检测控制单元停止本次射频检测项目的执行。
在这种情况下 , 射频检测控制单元 400终止本次的测量。
按照步骤 S101~S107给出的确定测量窗口的方法， 本发明进一步地给 出一种实时确定发射信道最大发射功率的方法， 所述实时确定发射信道最 大发射功率的方法具体地包括如下子步骤： 步骤 El、 在发射信道的相邻信道上， 按照步骤 S101~S107确定发射信 道相邻信道上的检测窗口， 射频检测控制单元控制射频检测执行单元在相 邻信道的检测窗口内进行信号功率测量；
确定发射信道相邻信道上的检测窗口时， 分为如下两种情况进行处理： 如果已经知道相邻信道上信号的存在时间区间， 则将检测窗口配置在 已知的有信号存在的时间区间上；
如果不知道相邻信道上信号的存在时间区间， 则将检测窗口配置在相 邻信道所有可能存在的时间区间上， 比如， 在发射信道的整个无线帧周期 都作为相邻信道上测量窗口的时间区间；
步骤 E2、 确定相邻信道能容许的发射信道在其上的干扰功率； 具体方法是： 根据相邻信道的现有功率 P(a)和相邻信道需要的信干比 R(s/n), 确定相邻信道可以容许的发射信道在其上的干扰功率 P(noise):
P(noise)= P(a)/R(s/n)
比如， 取信干比 R(s/n)=xdB, 典型地， x=10dB;
步骤 E3、 将发射信道在相邻信道上的泄漏功率值等于相邻信道能容许 的干扰功率 P(noise)时发射信道所能达到的发射功率确定为发射信道的最 大发射功率；
确定发射信道的最大发射功率的具体有以下两种方法：
第一种方法： 通过对发射信道泄漏功率做实时测量来计算发射信道的 最大发射功率。
在发射信道的相邻信道上， 按照步骤 S101~S107确定发射信道相邻信 道上的发射信道泄漏功率的测量窗口， 测量发射信道在相邻信道的泄漏功 率 P(acl), 并获取在相邻信道上产生泄漏功率 P(acl)时的发射信道的发射功 率 P(t)。
计算相邻邻信道能容许的干扰功率 P(noise)与发射信道在相邻信道的 泄漏功率 P(acl)之比值 K: K= P(noise)/ P(acl), 计算最大发射功率 P(t)_max: 将发射信道的产生所述带外泄漏功率 P(acl)的发射信道的发射功率 P(t)与比值 K相乘， 即得到 P(t)_max:
P(t)_max= P(t)* K
第二种方法： 通过对发射信道带外泄漏功率的先验数据来计算发射信 道的最大发射功率。
根据发射信道的带外泄漏技术规范规定的指标 ACLR, 计算发射信道 以一个单位的功率 P(unit)进行发射时， 在其所述相邻信道所覆盖的带宽上 的泄漏功率 P(acl)_unit;
计算邻信道能容许的干扰功率 P(noise)与发射信道在相邻信道的泄漏 功率 P(acl)_unit之比值 K_unit: K_unit= P(noise)/ P(acl)_unit,
计算最大发射功率 P(t)_max : 将发射信道产生所述带外泄漏功率 P(acl)_unit 的发射信道的发射功率 P(unit)与比值 K-unit 相乘， 即得到 P(t)_max:
P(t)_max= P(unit)* K-unit
基于本发明提出的射频检测方法， 本发明还提出相应的射频检测装置， 用于对存在邻频或者同频干扰的信道进行射频检测；
本发明一具体实施例提出的射频检测装置如图 3 ( a )所示， 具体为一 具有射频检测功能的无线接入点， 该装置包括： 收发信单元 301a、 射频检 测执行单元 403、 射频检测控制单元 400、 天线单元 304、 接口单元 303a。
收发信单元 301a是按照无线通信协议中的通信基站的技术规范设计， 包括基带处理单元（BBU ) 305a, 远端射频单元 (RRU)。 收发信单元 301a 包含的 BBU和 RRU有两种实现方式： BBU和 RRU作为一个集成的物理 设备进行一体化设计； BBU和 RRU作为分立的物理设备部署在不同的地理 位置上；
收发信单元 301a包含的 BBU305a中的调度器单元 302,除了在收发信 单元 301a的上下行信道上实现现有无线通信协议所规定的为终端动态指配 时频资源的功能之外， 还具有与射频检测控制单元 400 的通信接口， 根据 射频检测控制单元 400的请求信息来控制收发信单元 301a的发射信道上的 降功率窗口的产生；
该实施例中的射频检测控制单元 400用于控制射频检测执行单元 403 在调度器单元 302所控制的发射信道上或者发射信道的相邻信道上的射频 检测， 并且， 射频检测控制单元 400还用于向所述收发信单元中的调度器 单元 302发送在发射信道上开辟降功率窗口的请求信息， 以及从所述收发 信单元中的调度器单元 302接收降功率窗口请求的确认信息；
射频检测控制单元 400, 用于根据测量项目确定检测窗口的参数， 并根 据检测窗口的参数确定对检测窗口产生干扰的发射信道的降功率窗口参 数； 还用于向收发信单元发送降功率窗口的请求， 并根据降功率窗口请求 的确认信息中的降功率窗口参数确定新开辟的检测窗口参数； 还用于控制 射频检测执行单元 403在调度器单元 302所控制的发射信道上或者发射信 道的相邻信道上进行射频检测项目的射频检测。
射频检测执行单元 403 ,用于在所述射频检测控制单元的控制下在所述 收发信单元所控制的发射信道上或者发射信道的相邻信道上的新开辟的检 测窗口内完成相应的射频检测项目的射频检测。
接口单元 303a用于收发信单元 301a与网络侧之间的数据传输，以及射 频检测控制单元 400和射频检测执行单元 403与网络侧之间的测量控制和 测量数据的传输。
本发明一具体实施例提出的射频检测装置如图 3 ( b )所示， 具体为一 具有射频检测功能的无线终端， 该装置包括： 收发信单元 301b、 射频检测 执行单元 403、 射频检测控制单元 400、 天线单元 304、 接口单元 303b。
收发信单元 301b是按照无线通信协议中的通信终端的技术规范设计， 包括基带处理单元（BBU ) 305b, 本地射频单元 (LRU)。 收发信单元 301b 包含的 BBU和 LRU作为一个物理设备进行一体化设计
该实施例中的射频检测控制单元 400用于控制射频检测执行单元 403 在网络侧的调度器单元 302所控制的收发信单元 301 中的发射信道上或者 发射信道的相邻信道上的射频检测， 并且， 射频检测控制单元 400还用于 向网络侧调度器单元 302发送在收发信单元 301发射信道上开辟降功率窗 口的请求信息， 以及从网络侧调度器单元 302接收降功率窗口请求的确认 信息。 在发送给射频检测控制单元 400 的降功率窗口请求的确认信息中， 网络侧的调度器单元 302通过将收发信单元 301发射信道的发射时间与射 频检测执行单元 403在相邻信道和 /或发射信道上的测量时间指配在不同的 时间区间上实现。
接口单元 303b用于收发信单元 301b与使用收发信单元 301b进行通信 的设备或者网络之间的数据传输。
本发明所述的射频检测装置的工作过程是：
所述射频检测装置在第一频带上配置发射信道， 调度器单元 302除了 在第一频带上为射频检测装置所服务的终端指配下行传输资源之外， 还根 据射频检测控制单元 400的降功率窗口请求信息在第一频带和 /或第一频带 的相邻频带上开辟降功率窗口， 并将降功率窗口出现的时间位置发送给射 频检测控制单元 400,射频检测控制单元 400在降功率窗口出现的时间区间 上配置检测窗口， 并控制射频检测执行单元 403在调度器单元 302所控制 的发射信道上或者发射信道的相邻信道上的射频检测。
本发明所述的射频检测执行单元 403 , 包括： 接收通道处理单元 402、 参数估计及信号解调单元 403和测量数据存储单元 408。 窗口内的信号进行射频信号的低噪放大和变频处理；
参数估计及信号解调单元对来自接收通道处理单元的信号进行参数估 计和 /或信号解调；
测量数据存储单元 408用于存储参数估计及信号解调单元 403的测量 结果。
射频检测执行单元 403的一种实现方式见图 4, 包括如下单元： 可调通 带滤波器 401、 射频功率衰减器 /耦合器 405、 射频开关 406、 接收通道处理 单元 402、 参数估计及信号解调单元 407、 测量数据存储单元 408。。
可调通带滤波器， 用于从天线单元接收射频检测信号；
射频检测控制单元 400根据网络侧发送的控制信息对可调通带滤波器 401和接收通道处理单元 402的中心频率及带宽进行控制、对射频功率衰减 器 /耦合器 405的衰减量进行控制、 对参数估计及信号解调单元 407的工作 模式进行控制；
射频功率衰减器 /耦合器 405 , 用于对所述可调通带滤波器 401输出的 射频信号进行射频信号功率衰减， 经衰减后的射频信号通过射频开关 406 输入到接收通道处理单元 402; 在本发明另一实施例中， 不包含射频开关 406, 射频功率衰减器 /耦合器 405 输出的信号直接给所述接收通道处理单 元；
所述射频检测装置的特征在于， 包含一个为射频检测执行单元 403在 收发信单元 301的发射信道的相邻信道上配置测量窗口和向收发信单元 301 的发射信道所属的调度器单元请求降功率窗口的射频检测控制单元 400; 优选地， 所述射频检测执行单元 403 的特征在于， 在接收通道内包含 射频功率衰减器 /耦合器 405及测量数据存储单元 408。
所述的射频检测执行单元 403 ,其射频接收通道处理单元 402的实现方 法是如下之一种：
1 ) 当收发信单元 301的发射信道是 FDD系统或者地面电视广播的下 行信道时， 在收发信单元 301 的发射信道所使用的频带上， 射频检测执行 单元 403的射频接收通道釆用 FDD系统或者地面电视广播的通信终端的射 频接收芯片实现； 在收发信单元 301 的发射信道的相邻信道上， 如果相邻 信道是 FDD系统或者地面电视广播的下行信道，则在相邻信道上釆用 FDD 系统或者地面电视广播的通信终端的射频接收芯片实现； 如果相邻信道是 TDD系统的下行信道，则在相邻信道上釆用 TDD系统终端的射频接收芯片 实现。
2 ) 当收发信单元 301的发射信道是 TDD系统的下行信道时， 在收发 信单元 301的发射信道所使用的频带上， 射频检测执行单元 403的射频接 收通道釆用 TDD系统的通信终端的射频接收芯片实现； 在收发信单元 301 的发射信道的相邻信道上， 如果相邻信道是 FDD系统或者地面电视广播的 下行信道， 则在相邻信道上釆用 FDD系统或者地面电视广播的通信终端的 射频接收芯片实现； 如果相邻信道是 TDD系统的下行信道， 则在相邻信道 上釆用 TDD系统终端的射频接收芯片实现。
所述的射频检测执行单元 403 ,其参数估计和信号解调单元 407由终端 接收基带处理芯片和 /或数字处理器实现。
在网络侧， 射频检测执行单元 403安装在基站的天线位置上或者安装 在基站的 RRU内；
在终端侧， 射频检测执行单元 403安装在终端的位置上或者安装在终 端内；
射频检测控制单元 400 由数字处理器实现， 具体的实现方式是如下之 一种：
1 )与参数估计和信号解调单元 407—起在同一个数字处理器上实现；
2 )在基带处理单元中的数字处理器上实现；
3 ) 由独立的数字处理实现；
对于网络侧的射频检测控制单元 400, 安装在基站的 BBU内或者安装 在 BBU的位置上。
对于终端侧的射频检测控制单元 400b, 安装在终端内或者终端的位置 上；
图 5为本发明一种支持相邻信道射频检测的射频检测系统结构示意图， 该系统包括： 邻频带测量管理单元 500、 带有射频检测执行单元 403a的无 线接入点 300a, 带有射频检测控制单元 400a的 BBU单元 305a, 带有射频 检测执行单元 403b和射频检测控制单元 400b的无线终端 300b。
邻频带测量管理单元 500是位于网络侧的网元或者功能单元， 邻频带 测量管理单元 500对无线接入点 300a中的射频检测执行单元 403a和 /或无 线终端 300b中的射频检测执行单元 403a需要执行的的射频检测项目进行 管理， 具体的管理内容包括如下之一种或多种：
1 )向射频检测控制单元 400b和 /或射频检测控制单元 400a发送无线接 入点 300a和 /或无线中端的发射信道的相邻信道的先验信息；
2 ) 向无线终端侧的射频检测控制单元 400b和 /或无线接入点侧的射频 检测控制单元 400a发送检测项目触发信息；
3 )从无线终端侧的射频检测执行单元 403a和 /或无线终端侧的射频检 测执行单元 403b接收测量结果。
所述相邻频带的先验信息， 包括相邻频带上的信道宽度和信道使用的 无线技术种类。
本发明所述系统一种实现对相邻频带测量的一种工作过程是： 邻频带测量管理单元 500向射频检测控制单元 400a和 /或射频检测控制 单元 400b发送邻信道的检测项目触发信息和先验信息，
射频检测控制单元 400a和 /或射频检测控制单元 400b根据接收到的邻 信道的检测项目触发信息和先验信息， 来确定其检测窗口和降功率窗口； 射频检测控制单元 400a和 /或射频检测控制单元 400b向调度器单元 302 发送降功率窗口请求信息；
调度器单元 302向射频检测控制单元 400a和 /或射频检测控制单元 400b 发送降功率窗口请求确认信息
调度器单元 302向射频检测控制单元 400a和 /或射频检测控制单元 400b 根据降功率窗口请求确认信息指定的降功率窗口的位置来确定检测窗口的 位置， 并且在检测窗口内进行邻频带测量管理单元 500发来的检测项目所 需要的数据釆集， 并且进一步地完成检测项目， 并且将测量结果上报给邻 频带测量管理单元 500。
邻频带测量管理单元 500根据射频检测控制单元 400a和 /或射频检测控 制单元 400b的测量结果为无线接入点 300a和 /或无线终端 300b的发射通道 指配最大发射功率， 或者， 为无线接入点 300a和 /或无线终端 300b的发射 通道指配保护带宽。 实施例 1 :
本实施例给出一种本发明提出的射频检测装置的应用实例，参见图 3(a) 和图 3(b)。 在图 3(a)给出的具有射频检测功能的无线接入点 300a中， 收发 信单元 301a包含的射频通道是按照 LTE TDD基站的技术规范设计的射频 通道单元 RRU, 该通道单元的发射信道配置在从 470MHz到 790MHz的电 视广播的第一空闲频带上。收发信单元 301a的收发通道都在第一空闲频带。 收发信单元 301a包含的基带处理单元（ BBU ) 305a及其调度器单元 302配 置在网络侧， 射频检测控制单元 400配置在基带处理单元（ BBU ) 305a内 , 射频检测执行单元 403a与收发信单元 301a的射频通道单元 RRU配置在基 站站址上。 接口单元 303a是按照标准通信接口 CPRI接口进行设计的通信 接口。
射频检测控制单元 400与调度器单元 302之间存在传输降功率窗口参 数的传输信道。 调度器单元 302根据射频检测控制单元 400请求的降功率 窗口的参数， 在其控制的配置在第一空闲频带上的发射信道上开辟降功率 窗口， 并射频检测控制单元 400根据调度器单元 302发来的降功率窗口确 认信息，通过标准通信接口 CPRI向射频检测执行单元 403发送测量控制指 令。
在本实施例中 , 所述射频检测执行单元 403a的射频接收通道处理单元 402是由 LTE TDD终端的射频接收芯片和地面电视广播的射频接收通道芯 片实现； 其中， LTE TDD终端的射频接收芯片的射频通道在第一空闲频带 上进行射频信号的低噪声放大， 地面电视广播的射频接收通道芯片在第一 空闲频带的相邻频带上对电视广播信号进行低噪声放大。
在本实施例中，射频检测执行单元 403a的参数估计和信号解调单元 407 包含了 LTE TDD终端侧基带处理芯片和地面电视广播接收机的基带处理芯 片。
在网络侧 ,射频检测执行单元 403安装在 LTE TDD 分布式基站的 RRU 内；
在图 3(b)给出的具有射频检测功能的无线终端 300b 中， 收发信单元 301b包含的射频通道是按照 LTE TDD终端的技术规范设计的射频通道单 元， 该通道单元的发射信道配置在从 470MHz到 790MHz的电视广播的第 一空闲频带上。 收发信单元 301b的收发通道都在第一空闲频带， 按照 LTE TDD的空中接口规范与收发信单元 301a建立通信链路。 收发信单元 301b 包含的基带处理单元（ BBU ) 305b是按照 LTE TDD技术规范实现的终端侧 基带处理芯片， 射频检测控制单元 400 配置是由数字处理器实现的一个功 能单元， 射频检测执行单元 403b与射频检测控制单元 400配置在终端内或 者终端安装的位置上。 接口单元 303b是与无线局域网节点进行通信的有线 接口。
射频检测控制单元 400b与网络侧的调度器单元 302之间存在传输降功 率窗口参数的传输信道。 网络侧的调度器单元 302根据射频检测控制单元 400b请求的降功率窗口的参数，按照如下原则为射频检测执行单元 403b在 第一空闲频带上开辟降功率窗口： 1 )在降功率窗口出现的时间区间和频率 区间内不为射频检测控制单元 400b所属的终端配置上行资源； 2 )在降功 率窗口出现的时间区间和频率区间内不在第一空闲频带上为调度器单元 302所控制的其它终端配置上行资源。然后调度器单元 302将降功率窗口确 认信息通过收发信单元 301b的接收信道发送给射频检测控制单元 400b,射 频检测控制单元 400b根据调度器单元 302发来的降功率窗口确认信息， 控 制射频检测执行单元 403b在对应的检测窗口内完成指定的测量项目。
在本实施例中 , 所述射频检测执行单元 403b的射频接收通道处理单元 402b是由 LTE TDD终端的射频接收芯片和地面电视广播的射频接收通道 芯片实现； 其中， LTE TDD终端的射频接收芯片的射频通道在第一空闲频 带上进行射频信号的低噪声放大， 地面电视广播的射频接收通道芯片在第 一空闲频带的相邻频带上对电视广播信号进行低噪声放大。
在本实施例中， 所述的射频检测执行单元 403b的参数估计和信号解调 单元 407包含了 LTE TDD终端侧基带处理芯片和地面电视广播接收机的基 带处理芯片。 在终端侧， 射频检测执行单元 403b安装在 LTE TDD 终端内 或者与终端共址安装；
实施例 2:
该实施例给出了本发明提出的射频检测系统的一个实施例， 具体为一 种在电视广播频带的空闲频带上配置信道的无线固定接入系统， 参见图 5 , 系统部署方式参见图 6a和图 6b。
在本实施例中， 图 5给出的系统组成： 一个邻频带测量管理单元 500, 一个或者多个带有射频检测执行单元 403a的无线接入点 300a,—个带有射 频检测控制单元 400a的 BBU单元 305a, —个或者多个带有射频检测执行 单元 403b和射频检测控制单元 400b的无线终端 300b。 具体地为： 收发信单元 301a包含的射频通道是按照 LTE TDD基站的技术规范设 计的射频通道单元 RRU , 该通道单元工作的第一空闲频带是位于在 470MHz ~ 790MHz的电视广播的空闲频带上。收发信单元 301a的收发通道 都在第一空闲频带上。 收发信单元 301a包含的基带处理单元（BBU ) 305a 及其调度器单元 302a配置在网络侧，射频检测控制单元 400a与调度器单元 302a配置在基带处理单元（ BBU ) 305a内， 接口单元 303a是 CPRI标准通 信接口。
带有射频检测执行单元的无线终端 300b的收发信单元 301a是按照 LTE TDD终端的技术规范设计的收发信单元， 其工作的第一空闲频带与收发信 单元 301a相同， 也是将收发信道配置在位于在 470MHz ~ 790MHz范围内 的第一空闲频带上。
邻频带测量管理单元 500是一个在网络侧进行联合资源管理的功能单 元， 在本实施例中， 邻频带测量管理单元 500在一个独立的联合资源管理 装置内实现， 所述联合资源管理装置安装在 BBU所在位置， 以分布式联合 资源管理方式对邻信道测量进行管理。 邻频带测量管理单元 500 的另外一 种实现方式是配置在业务网关 /接入网关 （SGW/AGW )位置， 以集中的方 式实现邻信道测量管理。
邻频带测量管理单元 500在网络侧对每个无线接入点的工作频带和工 作频带的相邻频带， 以及相邻频带上的信道的无线技术种类信息进行搜集， 存储和发送给相应的无线接入点和 /或无线终端的射频检测控制单元 400a/b, 邻频带测量管理单元 500向无线接入点 300a和 /或无线终端 300b 中的射频检测单元 400a/b发送测量管理信息。 在本实施例中， 邻频带测量 管理单元 500 向射频检测单元 400a/b 发送相邻频带带宽 1/带宽 2 ( BW1/BW2 )的先验信息， 包括 BW1和 BW2的带宽为 8MHz, 信道类型 为地面数字广播信道。在这些先验信息的帮助下，射频检测控制单元 400a/b 为射频检测执行单元 403a/b确定在 BW1和 BW2上的接收通道的带宽， 以 及在 BW1和環 2上的信号处理方式。
本实施例给出的系统， 还可拥有在邻频带测量管理单元 500 的管理下 为配置在第一空闲频带上的 LTE TDD信道确定邻频带保护带宽， 以下举实 例说明基于本实施例给出的系统确定第一空闲频带上的 LTE TDD信道与其 相邻的电视广播信道间的保护带宽的方法：
邻频带测量管理单元 500向在网络侧 BBU中的射频检测控制单元 400a 发送相邻信道功率测量项目指示，网络侧 BBU中的射频检测控制单元 400a 控制无线接入点中的射频检测执行单元 403a对与第一空闲频带上的 LTE TDD信道相邻的电视广播信道进行信号功率测量， 并将测量结果 P(a)上报 给部频带测量管理单元 500。
邻频带测量管理单元 500根据相邻信道的现有功率 P(a)和相邻信道需 要的信干比 R(s/n), 确定相邻信道可以容许的干扰功率 P(noise):
P(noise)= P(a)/R(s/n)
本实施例中， 取信干比 R(s/n)=xdB, 典型地， x=10dB
邻频带测量管理单元 500根据以往测量得到的或者根据 LTE TDD发射 信道的技术规范得到的带外泄漏功率曲线， 参见图 7给出的曲线中的 201, 在这个带外泄漏功率曲线上计算 LTE TDD发射信道在带宽等于电视广播信 道带宽的频带 BW(TV), 在指定的发射功率下， 带外泄漏 P(acl)210等于电 视广播信道可以容许的最大干扰功率 P(noise)时 BW(TV)的中心频率 f3。
邻频带测量管理单元 500根据 BW(TV)的中心频率 f3与 LTE TDD发射 信道的中心频率 fl间的距离来确定保护带的宽度 BW(guard)。
BG(guard)= D_ ( fl-β ) -0.5χ(Β1+Β2)
具体方法是， D_fl/f3是部署在第一空闲频带上的信道中心频率 fl与现 存电视信道的中心频率间的距离。 部署在空闲频带上的信道中心频率与现 存信道的保护带宽 BG(guard)等于从 D_(fl~f2)中减去空闲频带上的信道带 宽 215(记为 B2)的二分之一与现存信道带宽 205 (记为 B1 ) 的二分之一之 和。
以上所述， 仅为本发明的较佳实施例而已， 并非用于限定本发明的保 护范围。 工业实用性
本发明公开的射频检测方法利用调度器单元对时频资源的动态管理能 力在其控制的发射信道上配合测量窗口的需要， 实现灵活地开辟零功率发 射窗口。 本发明公开的检测装置中的调度器单元与测量单元存在传输测量 窗口信息和 /或零功率发射窗口信息的传输通道， 射频检测单元按照本发明 提供的开辟零功率窗口的方法， 既可以实现对本地发射信道的相邻信道上 的现有无线信道信号功率的测量和 /或信息解调， 也可以实现对本地发射机 的带外泄漏功率和 /或发射功率的在线测量。 本发明提供的射频检测系统可 自适应地确定其工作信道与异站址发射的相邻信道间的保护频带的宽度。

Claims

权利要求书
1、 一种射频检测方法， 其特征在于， 该方法包括：
射频检测控制单元根据测量项目确定检测窗口的参数；
射频检测控制单元根据检测窗口的参数确定对检测窗口产生干扰的发 射信道的降功率窗口参数；
射频检测控制单元向对检测窗口产生干扰的发射信道所属的调度器单 元发送降功率窗口请求；
所述调度器单元向射频检测控制单元发送降功率窗口请求确认信息； 射频检测控制单元根据所述调度器单元反馈的降功率窗口请求确认信 息判断降功率窗口请求是否得到确认， 若得到确认， 则射频检测控制单元 根据调度器单元反馈的降功率窗口参数确定新开辟的检测窗口参数， 并控 制射频检测执行单元在所述新开辟的检测窗口内完成相应的射频检测项 目； 若未得到确认， 则射频检测控制单元停止本次射频检测项目的执行。
2、 根据权利要求 1所述的方法， 其中， 所述检测窗口的参数包括： 检 测窗口的大小、 检测窗口的侯选配置范围、 射频数据釆集方式， 所述确定 检测窗口的参数方法为：
所述检测窗口的大小根据检测项目进行一次射频样本数据釆集所需要 覆盖的时间和频率的二维尺度来确定；
所述检测窗口的侯选配置范围根据能够获得等价的射频样本数据的检 测窗口的位置集合来确定；
所述射频数据釆集方式为通过单次射频样本数据釆集完成测量和通过 多次射频样本数据釆集完成测量两种方式中的一种。
3、 根据权利要求 2所述的方法， 其中， 所述根据检测窗口的参数确定 对检测窗口产生干扰的发射信道的降功率窗口参数包括： 对降功率窗口的 大小的确定、 降功率窗口候选配置范围的确定及降功率窗口开辟方式的确 定；
降功率窗口大小的确定方法为： 将降功率窗口覆盖的时间区间确定为 等于或者大于所述检测窗口覆盖的时间区间； 将位于发射信道所占用的频 带上的， 其发射功率对所述检测窗口内产生的干扰强度大于预定门限的子 频带的宽度确定为降功率窗口的大小；
降功率窗口候选配置范围的确定方法为： 将所述检测窗口的候选配置 范围中的时间区间作为降功率窗口的候选时间范围； 将降功率窗口的频率 尺度所容许的变化范围作为降功率窗口的候选配置范围；
降功率窗口开辟方式的确定方法为： 对于单次射频样本数据釆集方式， 在一次测量事件中只在发射信道所在频带上开辟一次降功率窗口； 对于多 次射频样本数据釆集方式， 在一次测量事件中在发射信道所在频带上开辟 多次降功率窗口。
4、 根据权利要求 3所述的方法， 其中， 所述向对检测窗口产生干扰的 发射信道所属的调度器单元发送降功率窗口请求的方式为：
射频检测控制单元通过其所属无线终端的上行无线信道向对检测窗口 产生干扰的发射信道所属的调度器单元发送降功率窗口请求， 或射频检测 控制单元通过与对检测窗口产生干扰的发射信道所属的调度器单元之间的 网络侧通道发送降功率窗口请求；
所述降功率窗口请求携带降功率窗口参数。
5、 根据权利要求 4所述的方法， 其中， 所述降功率窗口请求还携带优 先级信息， 所述优先级信息用于指示： 强制调度器单元在发射信道上开辟 降功率窗口， 或由调度器单元视当前的业务情况决定是否在发射信道上开 辟降功率窗口。
6、 根据权利要求 5所述的方法， 其中， 根据所述优先级信息的不同， 所述调度器单元向射频检测控制单元发送降功率窗口请求确认信息的方式 为：
若所述优先级信息指示强制调度器单元在发射信道上开辟降功率窗 口， 则所述调度器单元在其控制的发射信道上按照降功率窗口请求所包含 的信息开辟降功率窗口， 并向射频检测控制单元发送降功率窗口请求确认 信息；
若所述优先级信息指示由调度器单元视当前的业务情况决定是否在发 射信道上开辟降功率窗口， 则所述调度器单元根据所述降功率窗口请求中 包含的降功率窗口尺度和候选配置范围判断， 在其所控制的发射信道所拥 有的空闲时频资源或无法使用的时频资源中是否存在满足要求的资源， 若 不存在满足要求的资源， 则判断是否能够通过降低某些用户的数据传输速 率或者短时中断某些用户的数据传输提供降功率窗口所需的资源； 当降功 率窗口所需的资源满足时， 所述调度器单元向所述射频检测控制单元发送 降功率窗口确认信息， 否则发送拒绝开辟降功率窗口的信息。
7、 根据权利要求 1所述的方法， 其中， 所述的射频检测项目包括以下 射频检测项目中的一种或多种：
相邻信道上的信号功率测量；
相邻信道上空闲时隙的测量；
相邻信道上的信号的带外泄漏功率测量；
对发射通道带外泄漏功率的测量；
对发射通道最大发射功率进行测量。
8、 根据权利要求 1所述的方法， 其中，
在网络侧的调度器单元根据终端侧射频检测控制单元的降功率窗口请 求为射频检测执行单元开辟上行信道的相邻信道的降功率窗口时， 在降功 率窗口出现的时间区间和频率区间内不为射频检测控制单元所属的终端配 置上行资源； 在降功率窗口出现的时间区间和频率区间内不在第一空闲频 带上为所述调度器单元所控制的其它终端配置上行资源；
所述调度器单元将降功率窗口确认信息通过收发信单元的接收信道发 送给射频检测控制单元， 射频检测控制单元根据调度器单元发来的降功率 窗口确认信息， 控制射频检测执行单元在对应的检测窗口内完成指定的测 量项目。
9、 一种实时确定发射信道最大发射功率的方法， 其特征在于， 该方法 包括：
在发射信道的相邻信道上， 按照权利要求 1 所述的射频检测方法确定 在所述相邻信道上的发射信道泄漏功率的测量窗口， 测量发射信道在相邻 信道上的泄漏功率 P(acl),并获取在相邻信道上产生泄漏功率时的发射信道 的发射功率 P(t);
计算所述相邻信道能容许的干扰功率 P(noise)与发射信道在所述相邻 信道的泄漏功率 P(acl)的比值 K;
将所述发射信道的发射功率 P(t)与所述比值 K乘积确定为发射信道最 大发射功率。
10、 一种射频检测装置， 其特征在于， 该装置包括：
收发信单元， 用于根据射频检测控制单元的请求控制收发信单元的发 射信道上的降功率窗口的产生；
射频检测控制单元， 用于根据测量项目确定检测窗口的参数， 并根据 检测窗口的参数确定对检测窗口产生干扰的发射信道的降功率窗口参数； 用于向收发信单元发送降功率窗口的请求， 并根据降功率窗口请求的确认 信息中的降功率窗口参数确定新开辟的检测窗口参数； 用于对所述射频检 测执行单元进行控制；
射频检测执行单元， 用于在所述射频检测控制单元的控制下在所述收 发信单元所控制的发射信道上或者发射信道的相邻信道上的新开辟的检测 窗口内完成相应的射频检测项目的射频检测；
接口单元， 用于收发信单元与网络侧之间的数据传输， 以及射频检测 控制单元和射频检测执行单元与网络侧之间的测量控制和测量数据的传 输。
11、 根据权利要求 10所述的装置， 其中， 所述装置还包括：
调度器单元， 位于所述收发信单元中或位于网络侧， 用于接收所述射 频检测控制单元发送的降功率窗口请求， 并根据射频检测控制单元提供的 检测窗口参数确定降功率窗口参数， 并向射频检测控制单元发送降功率窗 口请求确认信息， 所述降功率窗口请求确认信息包含降功率窗口参数。
12、根据权利要求 10所述的装置，其中， 所述射频检测执行单元包括： 可调通带滤波器， 用于在所述射频检测控制单元的控制下对从天线单 元接收射频检测信号进行带通滤波；
射频功率衰减器 /耦合器， 用于在所述射频检测控制单元的控制下对所 述可调通带滤波器输出的射频信号进行射频信号功率衰减， 经衰减后的射 频信号输入到接收通道处理单元；
接收通道处理单元， 用于在所述射频检测控制单元的控制下在发射通 道和 /或发射通道的相邻信道上进行射频信号的低噪放大和变频处理；
参数估计及信号解调单元， 用于在所述射频检测控制单元的控制下对 来自接收通道处理单元的信号进行参数估计和 /或信号解调；
测量数据存储单元， 用于存储参数估计及信号解调单元的测量结果。
13、 一种射频检测系统， 其特征在于， 该系统包括：
依据权利要求 10所述的射频检测装置实现的无线接入点及无线终端； 邻频带测量管理单元， 位于网络侧， 用于对所述无线接入点中的射频 测项目进行管理， 管理内容包括如下之一种或多种：
向所述无线接入点和 /或无线终端侧的射频检测控制单元发送所述无线 接入点和 /或无线终端的发射信道的相邻信道的先验信息；
向所述无线接入点和 /或无线终端侧的射频检测控制单元发送检测项目 触发信息；
从所述无线接入点和 /或无线终端侧的射频检测控制单元接收测量结 果。
14、 一种邻频带保护带宽确定方法， 其特征在于， 该方法基于权利要 求 13所述的系统实现， 该方法包括：
邻频带测量管理单元向在网络侧基带处理单元 BBU中的射频检测控制 单元发送相邻信道功率测量项目指示， 网络侧 BBU中的射频检测控制单元 控制无线接入点中的射频检测执行单元对与第一空闲频带上的长期演进时 分双工 LTE TDD信道相邻的电视广播信道进行信号功率测量， 并将此测量 结果？( )上^艮给邻频带测量管理单元；
邻频带测量管理单元根据所述相邻信道的现有功率 P(a)和所述相邻信 道需要的信干比 R(s/n),确定相邻信道容许的干扰功率 P(noise)= P(a)/R(s/n); 邻频带测量管理单元根据测量获得的或者根据 LTE TDD发射信道的技 术规范得到的带外泄漏功率曲线， 在所述带外泄漏功率曲线上计算 LTE TDD发射信道在带宽等于所述电视广播信道带宽的频带 BW(TV), 在指定 的发射功率下， 带外泄漏 P(acl)等于所述电视广播信道可容许的最大干扰功 率 P(noise)时 BW(TV)的中心频率 f3;
邻频带测量管理单元根据 BW(TV)的中心频率 β与 LTE TDD发射信道 的中心频率 fl间的距离来确定保护带宽 BW(guard)。
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