WO2012022037A1 - 一种基站子系统获知移动终端能力的方法和装置 - Google Patents

一种基站子系统获知移动终端能力的方法和装置 Download PDF

Info

Publication number
WO2012022037A1
WO2012022037A1 PCT/CN2010/076110 CN2010076110W WO2012022037A1 WO 2012022037 A1 WO2012022037 A1 WO 2012022037A1 CN 2010076110 W CN2010076110 W CN 2010076110W WO 2012022037 A1 WO2012022037 A1 WO 2012022037A1
Authority
WO
WIPO (PCT)
Prior art keywords
mobile terminal
received signal
interference
threshold
single antenna
Prior art date
Application number
PCT/CN2010/076110
Other languages
English (en)
French (fr)
Inventor
江宁
柯昌伟
王欣晖
Original Assignee
中兴通讯股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 中兴通讯股份有限公司 filed Critical 中兴通讯股份有限公司
Priority to EP10856035.0A priority Critical patent/EP2608583A4/en
Priority to PCT/CN2010/076110 priority patent/WO2012022037A1/zh
Priority to CN201080067977.5A priority patent/CN102986260B/zh
Publication of WO2012022037A1 publication Critical patent/WO2012022037A1/zh

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/06—Testing, supervising or monitoring using simulated traffic
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/10—Monitoring; Testing of transmitters
    • H04B17/15—Performance testing
    • H04B17/16—Test equipment located at the transmitter
    • 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

Definitions

  • the present invention relates to the field of mobile communications, and in particular, to a method and apparatus for implementing a capability of a base station subsystem to learn a mobile terminal in a GSM (Global System for Mobile Communications) system.
  • GSM Global System for Mobile Communications
  • the network architecture of the GSM system is shown in Figure 1. It includes the core network, BSC (Base Station Controller) and BTS (Base Station).
  • BSC Base Station Controller
  • BTS Base Station
  • the BSC and BTS can be collectively referred to as the base station subsystem (BSS).
  • Base Station Subsystem Base Station Subsystem
  • the interface between the core network and the BSC is called the A interface
  • the interface between the BSC and the BTS is called the Abis interface
  • the interface between the BTS and the mobile terminal is called the Um interface
  • the core network, the BSC, and the BTS Work together to provide complete mobile voice service capabilities to mobile terminals.
  • GSM wireless networks are covered and served by several base stations. GSM commercial wireless networks often require dozens or even hundreds of base stations to complete coverage and meet traffic demands.
  • the GSM network can use very limited frequency resources.
  • the GSM system uses a cellular structure to resolve the contradiction between the demand for traffic and the limited frequency resources of the mobile communication system.
  • the frequency reuse method brought by the cellular structure inevitably introduces a considerable amount of co-channel interference and adjacent-channel interference to the GSM network, and the interference levels of these co-channel interference and adjacent-channel interference are closely related to the frequency reuse. More severe, making the GSM network a network with limited interference.
  • GSM and HSPA+ evolved high-speed packet access
  • LTE Long Term Evolution
  • HSPA+ or LTE occupies most of the spectrum resources
  • GSM occupies a small portion of spectrum resources, but the number of GSM users does not decrease drastically. This requires the GSM network to provide voice services to these users with relatively less spectrum resources.
  • a more compact frequency reuse method for the GSM system is one of the ways to solve the spectrum resource dilemma, but obviously, this Closer frequency Multiplexing also inevitably brings more co-channel interference and adjacent-channel interference, which also makes the GSM network more into a network with limited interference.
  • the emergence of single-antenna interference suppression cancellation technology enables mobile terminals to take advantage of this technology in eliminating interference and achieve good voice processing performance in interference-limited environments.
  • some mobile terminals supporting single-antenna interference suppression cancellation technology can still achieve good voice processing performance in the case of co-channel interference of 0 dB or 3 dB.
  • the single antenna interference suppression cancellation technology enables the base station subsystem to allocate some relatively large interference and poor quality channels to mobile terminals supporting single antenna interference suppression cancellation technology, instead of being allocated to traditional mobile terminals that do not support the technology. Through such processing, it is possible to obtain good overall network performance in an environment where interference is limited.
  • the mobile terminal reports the support capability of the single antenna interference suppression cancellation of the mobile terminal through the interface with the base station subsystem, but if the mobile terminal supporting the single antenna interference suppression cancellation is used for some reasons, such as software design defects, there is no When the support capability is reported, the base station subsystem cannot know the support capability of the single antenna interference suppression cancellation of the mobile terminal.
  • a base station subsystem can continuously apply co-channel interference to a specific frame of one or more multi-frame periods, and actively detect a single antenna when the mobile terminal does not have its single-antenna interference suppression cancellation support capability. Support for interference suppression cancellation.
  • this method can only be used for the continuous transmission of the base station.
  • how the base station subsystem learns the support capability of the single antenna interference suppression cancellation of the mobile terminal is an urgent problem to be solved.
  • the technical problem to be solved by the present invention is to provide a method and apparatus for a base station subsystem to learn the capabilities of a mobile terminal, which can learn the support capability of the single antenna interference suppression cancellation of the mobile terminal during discontinuous transmission.
  • the present invention provides a method for a base station subsystem to learn the capabilities of a mobile terminal, including: applying, by the base station subsystem, a silence insertion description (SID) frame of a mobile terminal to be tested for single antenna interference suppression cancellation support capability or Multiple rounds of co-channel interference, analyzing the received signal parameters in the measurement report reported by the mobile terminal during the application of the same-frequency interference, and determining whether the mobile terminal has a single day Line interference suppression cancellation support capability; or, the base station subsystem applies one or more rounds of co-channel interference to the SID frame of the mobile terminal to be tested for the single antenna interference suppression cancellation support capability and other specific types of downlink frames, and analyzes the application of the same-frequency interference period.
  • SID silence insertion description
  • the received signal parameter in the measurement report reported by the mobile terminal determines whether the mobile terminal has a single antenna interference suppression cancellation support capability.
  • the method further includes: the base station subsystem determining the mobile terminal to be tested for single antenna interference suppression cancellation support capability; wherein, the base station subsystem is configured according to The mobile terminal that determines the single antenna interference suppression cancellation support capability to be tested is determined by one or more of the following information:
  • a parameter that reflects the interference handling capability of the mobile terminal in the measurement report sent by the mobile terminal (1) A parameter that reflects the interference handling capability of the mobile terminal in the measurement report sent by the mobile terminal;
  • the other specific types of downlink frames include a voice channel (TCH) frame and/or a slow associated channel control channel (SACCH) frame.
  • TCH voice channel
  • SACCH slow associated channel control channel
  • the base station subsystem separately performs Gaussian Filtering Minimum Shift Keying (GMSK) modulation on the same-frequency interference signal and the measured signal, and then modulating The same-frequency interference signal is vector-added with the measured signal to form a downlink signal, which is sent to the mobile terminal; the same-frequency interference signal is an interference signal having the same phase as the measured signal, or is different from the phase of the measured signal.
  • GMSK Gaussian Filtering Minimum Shift Keying
  • the base station subsystem directly performs adaptive quadrature phase shift keying (QPSK) modulation on the same-frequency interference signal and the measured signal, and sends the modulated downlink signal to the mobile terminal.
  • QPSK quadrature phase shift keying
  • the base station subsystem applies one or more rounds of co-channel interference to the SID frame of the mobile terminal to be tested for the single antenna interference suppression cancellation support capability, and analyzes the reception in the measurement report reported by the mobile terminal during the application of the same frequency interference.
  • the step of determining whether the mobile terminal has a single antenna interference suppression cancellation support capability comprises: the base station subsystem interference with the single antenna to be tested
  • the SID frame of the mobile terminal that suppresses the cancellation capability applies a round of co-channel interference, analyzes the received signal parameter in the measurement report reported by the mobile terminal during the application of the same-frequency interference, and determines whether to continue applying the same-frequency interference based on the analysis result, if Determining to continue to apply co-channel interference, and then applying the same-frequency interference to the SID frame of the mobile terminal until it is determined whether the mobile terminal has a single-antenna interference suppression cancellation support capability; the base station subsystem is to test the single-antenna interference suppression
  • the SID frame of the mobile terminal that eliminates the support capability and the other specific types of downlink frames apply one or more rounds of co-channel interference, and analyze the received signal parameters in the measurement report reported by the mobile terminal during the application of the same-frequency interference, and determine the movement.
  • the step of whether the terminal has the single antenna interference suppression cancellation support capability includes: the base station subsystem applying a round of co-channel interference to the SID frame of the mobile terminal to be tested for the single antenna interference suppression cancellation support capability and other specific types of downlink frames. And analyzing the reported by the mobile terminal during the application of the co-channel interference Receive signal parameters in the quantity report, and determine whether to continue to apply co-channel interference based on the analysis result, and if it is determined to continue to apply co-channel interference, continue to apply co-channel interference to the SID frame of the mobile terminal and other specific types of downlink frames, Until it is determined whether the mobile terminal has single antenna interference suppression cancellation support capability.
  • the base station subsystem applies a round of co-channel interference, analyzes the received signal parameters in the measurement report reported by the mobile terminal during the application of the same-frequency interference, and determines whether the mobile terminal has the single-antenna interference suppression cancellation support capability.
  • the base station subsystem determines that the mobile terminal has a single antenna interference suppression cancellation support capability.
  • the base station subsystem applies multiple rounds of co-channel interference, analyzes the received signal parameters in the measurement report reported by the mobile terminal during the application of the same-frequency interference, and determines whether the mobile terminal has the single-antenna interference suppression cancellation support capability.
  • the base station subsystem determines that the mobile terminal has the single antenna interference suppression cancellation support capability; or, if each The analysis result obtained by applying the same frequency interference is better than the preset threshold threshold, and the base station subsystem determines that the mobile terminal has the single antenna interference suppression cancellation support capability.
  • the received signal parameter includes a corpus received signal quality parameter and a subset received signal Or a quality parameter; or, the received signal parameter includes a corpus received signal quality parameter, a corpusched received signal strength parameter, a subset received signal quality parameter, and a subset received signal strength parameter; and the analyzing is performed by the mobile terminal during the application of the same frequency interference
  • the step of measuring the received signal parameters in the report includes: averaging the total set received signal quality parameter values in the N consecutive recent measurement reports, determining whether the obtained result is less than the first result threshold threshold, and, N consecutive consecutive.
  • the subset of the received signal quality parameter values in the measurement report is averaged to determine whether the obtained result is smaller than the second result threshold threshold; or, for the N consecutively recent, total set received signal quality parameter values are less than the first condition threshold threshold
  • the received signal quality parameter value in the measurement report is obtained by standard deviation, and the obtained result is judged to be smaller than the third result threshold threshold, and, for the N consecutively recent, subset received signal quality parameter values are
  • the obtained result is smaller than the fourth result threshold value; or, the average value of the received signal quality parameter value in the measurement report containing the full set received signal strength parameter value is less than the third condition threshold value, and whether the obtained result is smaller than the first result
  • the result threshold value is equal to, and the average value of the subset received signal quality parameter value in the measurement report that includes the subset received signal strength parameter value is less than the fourth condition threshold threshold value, and whether the obtained result is smaller than the sixth result threshold Or; determining a standard deviation of a total set received signal quality parameter value in a measurement report that includes a total set received signal strength parameter value that is less than a fifth condition threshold value, and determines whether the obtained result is smaller than a seventh result threshold value, and The subset received signal quality parameter value in the measurement report having the subset received signal strength parameter value less than the sixth condition threshold value is determined as a standard deviation, and the obtained result is judged to be smaller than the eighth result threshold threshold; wherein N is an integer.
  • the present invention provides an apparatus for learning the capabilities of a mobile terminal, including a capability learning unit, wherein: the capability learning unit is configured to: a mute insertion description of a mobile terminal to be tested for a single antenna interference suppression cancellation support capability ( SID) Frames apply one or more rounds of co-channel interference, or treat the test
  • SID single antenna interference suppression cancellation support capability
  • the single-antenna interference suppression cancellation-capable SID frame of the mobile terminal and the other specific types of downlink frames apply one or more rounds of co-channel interference, and analyze the received signal parameters in the measurement report reported by the mobile terminal during the application of the same-frequency interference, Determining whether the mobile terminal has a single antenna interference suppression cancellation support capability.
  • the apparatus further includes a test target determining unit, wherein: the test target determining unit is configured to: determine a mobile terminal to be tested for single antenna interference suppression cancellation support capability according to one or more of the following information, and notify The capability learning unit: (1) a parameter that reflects the interference processing capability of the mobile terminal in the measurement report sent by the mobile terminal; (2) a measurement result for the uplink; (3) a traffic load.
  • the other specific types of downlink frames include a voice channel (TCH) frame and/or a slow associated control channel (SACCH) frame.
  • the capability learning unit is configured to: perform Gaussian Filtering Minimum Frequency Shift Keying (GMSK) modulation on the same frequency and the signal to be measured, and then combine the modulated co-channel interference signal with the measured
  • GMSK Gaussian Filtering Minimum Frequency Shift Keying
  • the signals are vector-added to form a downlink signal, which is sent to the mobile terminal, and the same-frequency interference signal is an interference signal having the same phase as the measured signal, or an interference signal having a phase difference of ⁇ /2 from the measured signal; or After the same-frequency interference signal and the measured signal are directly subjected to adaptive quadrature phase shift keying (QPSK) modulation, the modulated downlink signal is sent to the mobile terminal.
  • QPSK adaptive quadrature phase shift keying
  • the capability learning unit is configured to: apply a round of co-channel interference to the SID frame of the mobile terminal to be tested for the single antenna interference suppression cancellation support capability, and analyze the measurement reported by the mobile terminal during the application of the same frequency interference.
  • the received signal parameter in the report and determining whether to continue to apply the same-frequency interference based on the analysis result, if it is determined to continue to apply the same-frequency interference, continue to apply the same-frequency interference to the SID frame of the mobile terminal until it is determined whether the mobile terminal is Having a single antenna interference suppression cancellation support capability; or, applying a round of co-channel interference to the SID frame of the mobile terminal to be tested for the single antenna interference suppression cancellation support capability and other specific types of downlink frames, analyzing the application of the same frequency interference period Determining a received signal parameter in a measurement report reported by the mobile terminal, and determining whether to continue to apply co-channel interference based on the analysis result, and if it is determined to continue to apply co-channel interference, continuing to the SID frame of the mobile
  • the capability learning unit is configured to: after applying a round of co-channel interference, when the analysis result obtained by applying the same-frequency interference is better than a preset threshold threshold, determining that the mobile terminal has single-antenna interference suppression Eliminating the support capability; or, after applying multiple rounds of co-channel interference, if the analysis result obtained by applying the same-frequency interference in one round is better than the preset threshold threshold, determining that the mobile terminal has the single-antenna interference suppression cancellation support capability Or, after applying multiple rounds of co-channel interference, if the analysis result obtained by applying the same-frequency interference in each round is better than the preset threshold threshold, it is determined that the mobile terminal has the single-antenna interference suppression cancellation support capability.
  • the received signal parameter includes a ensemble received signal quality parameter and a subset received signal quality parameter; or the received signal parameter includes a corpus received signal quality parameter, a corpusched received signal strength parameter, a subset received signal quality parameter, and a subset received a signal strength parameter;
  • the capability learning unit is configured to: when analyzing a received signal parameter in the measurement report reported by the mobile terminal during the application of the co-channel interference: a total set received signal quality parameter in the N consecutive recent measurement reports The value is averaged, whether the obtained result is smaller than the first result threshold value, and the average value of the subset received signal quality parameter values in the N consecutive recent measurement reports is determined, and whether the obtained result is smaller than the second result threshold value Or, determining a standard deviation of the received signal quality parameter values in the N consecutive continuous, total set received signal quality parameter values that are smaller than the first condition threshold threshold value, and determining whether the obtained result is smaller than the third result threshold threshold value, And, for N consecutive recent, subset receptions The value of the received signal quality parameter in the measurement
  • the result is a threshold value; where N is an integer.
  • the network can actively detect the support capability of the single antenna interference suppression cancellation when the mobile terminal does not report the single antenna interference suppression cancellation support capability during the discontinuous transmission, so that the single antenna interference can be effectively used.
  • the suppression cancellation technology enables the GSM network to achieve good overall network performance in an environment with limited interference.
  • FIG. 1 is a network architecture of a conventional GSM system
  • FIG. 2 is a schematic diagram of a base station subsystem in the first embodiment of the present invention actively learning the capabilities of a mobile terminal by applying co-channel interference to a SID (Sience Insertion Description) frame.
  • FIG. 3 is a schematic diagram of a base station subsystem applying interference to a SID frame for full rate speech coding according to Embodiment 1 of the present invention
  • FIG. 4 is a base station subsystem for SID frame for a half rate speech coding according to Embodiment 1 of the present invention; Schematic diagram of applying interference
  • FIG. 5 is a base station subsystem pair for adaptive multi-rate speech coding according to Embodiment 1 of the present invention;
  • FIG. 6 is a flowchart of the base station subsystem of the second embodiment of the present invention actively learning the capabilities of the mobile terminal by jointly applying the same-frequency interference to the TCH frame and the SID frame and the SACCCH frame;
  • FIG. 7 is a flowchart of the present invention;
  • Embodiment 2 for a full rate speech coding a schematic diagram of a base station subsystem jointly applying interference to a TCH frame and a SID frame and a SACCH frame;
  • FIG. 8 is a second rate speech coding, a base station subsystem to a TCH frame and a second embodiment of the present invention;
  • FIG. 1 is a flowchart of the base station subsystem of the second embodiment of the present invention actively learning the capabilities of the mobile terminal by jointly applying the same-frequency interference to the TCH frame and the SID frame and the SACCCH frame;
  • FIG. 7 is a flowchart of the present invention;
  • Embodiment 2 for a full rate speech coding a schematic diagram of a base
  • FIG. 9 is a schematic diagram of a joint application of interference between a base station subsystem and a SID frame and a SACCH frame for adaptive multi-rate speech coding according to Embodiment 2 of the present invention
  • FIG. A schematic diagram of an apparatus for knowing the capabilities of a mobile terminal in an embodiment of the invention.
  • BEST MODE FOR CARRYING OUT THE INVENTION The basic idea of the present invention is that the base station subsystem analyzes the measurement report reported by the mobile terminal, combines the SID frame to the mobile terminal, or the SID frame of the mobile terminal and other specifics during the discontinuous transmission.
  • the combination of the downlink frames of the type applies one or more rounds of detection of the measurement report of the feedback after the same frequency interference to obtain the support capability of the single antenna interference suppression cancellation of the mobile terminal.
  • the base station subsystem actively learns that the single antenna interference suppression cancellation support capability of the mobile terminal may include two phases: In the first phase, the base station subsystem determines the mobile terminal to be tested for the single antenna interference suppression cancellation support capability; that is, the base station subsystem A mobile terminal that needs to be aware of the single antenna interference suppression cancellation support capability is determined.
  • the mobile terminal may be determined by a parameter in the measurement report sent by the mobile terminal that reflects the interference handling capability of the mobile terminal, such as a received signal quality parameter and/or a received signal strength parameter; or, the base station subsystem may also be based on uplink
  • the measurement result is used to determine that one or some mobile terminals served by certain carrier frequencies or cells need to perform single antenna interference suppression cancellation support capability; or, the base station subsystem may also determine the carrier frequency based on the traffic load or One or some mobile terminals serving the cell need to be aware of the single antenna interference suppression cancellation support capability.
  • the step of determining, by the base station subsystem at this stage, the mobile terminal that determines the single antenna interference suppression cancellation support capability to be tested may be omitted.
  • the base station subsystem applies one or more rounds of co-channel interference to the SID frame of the mobile terminal to be tested for the single-antenna interference suppression cancellation support capability, and analyzes the received signal in the measurement report reported by the mobile terminal during the application of the same-frequency interference.
  • Parameter determining whether the mobile terminal has single antenna interference suppression cancellation support capability; or, the base station subsystem applies one or more rounds of SID frames of mobile terminals to be tested for single antenna interference suppression cancellation support capability and other specific types of downlink frames
  • the same-frequency interference is analyzed, and the received signal parameter in the measurement report reported by the mobile terminal during the inter-frequency interference is analyzed to determine whether the mobile terminal has the single-antenna interference suppression cancellation support capability.
  • the other specific types of downlink frames include TCH (Voice Channel) frames and/or SACCH (Slow Associated Control Channel) frames, that is, may apply only co-channel interference to SID frames, or to TCH frames and SID frames.
  • the received signal parameters may include a ensemble received signal quality parameter and a subset received signal quality parameter; and may also include a corpus received signal quality parameter, a corpus received signal strength parameter, a subset received signal quality parameter, and a subset received signal strength parameter, and the like;
  • the manner of applying one or more rounds of co-channel interference may be: applying a round of co-channel interference to the combination of the SID frame or the SID frame and other specific types of downlink frames, and applying the power intensity of the co-channel interference.
  • the duration may be set according to the strategy of the base station subsystem, and then analyze the quality of the received signal of the complete set in one or more measurement reports reported by the mobile terminal during the application of the same frequency interference, and the related parameters such as the received signal strength of the complete set, for example, whether the parameters are excellent
  • the base station subsystem determines whether to continue to apply co-channel interference based on the analysis result. It is also necessary to analyze the subset received signal quality, subset received signal strength and other related parameters in the one or more measurement reports reported by the mobile terminal during the application of the same frequency interference, for example, whether the parameters are better than the set threshold threshold, the base station The subsystem determines whether to continue to apply co-channel interference based on the analysis results.
  • the threshold threshold of the received signal strength of the complete set is independent of the threshold value of the received signal strength of the subset. If the base station determines to continue to apply another round based on the analysis result, the power intensity and duration of applying the co-channel interference may be set according to the strategy of the base station subsystem, which may be equivalent to the corresponding setting of the previous round, or may be different. this. Then, the base station subsystem analyzes the total received signal quality, the received signal strength, the subset received signal quality, the subset received signal strength, and other related parameters in the one or more measurement reports reported by the mobile terminal during the round of the same frequency interference.
  • the threshold threshold may be equivalent to the corresponding setting of the previous round, or may be different.
  • the base station subsystem determines whether to continue to apply co-channel interference based on the analysis result. By analogy, until the base station subsystem considers that the single antenna interference suppression cancellation capability of the mobile terminal can be derived, the process of the base station subsystem actively learning the single antenna interference suppression cancellation capability of the mobile terminal in the discontinuous transmission is completed.
  • the base station subsystem can analyze the received signal quality in the complete set of measurement reports reported by the mobile terminal after the same-frequency interference is applied, the received signal strength of the complete set, and the received signal quality of the subset.
  • the quantity, the subset receives the signal strength and other related parameters, and combines various correlation threshold thresholds preset by the base station subsystem to determine the single antenna interference suppression cancellation capability of the mobile terminal.
  • the specific value of the determination of the single antenna interference suppression cancellation capability of the specific mobile terminal such as applying several rounds of co-channel interference, the power intensity and duration of the applied co-channel interference, the threshold value for determining the threshold, etc. It is implemented according to the strategy of the base station subsystem.
  • the base station subsystem determines whether the mobile terminal has single antenna interference suppression cancellation support capability by applying only one round of co-channel interference
  • the analysis result obtained by applying the same frequency interference is better than a preset threshold threshold.
  • the base station subsystem determines that the mobile terminal has single antenna interference suppression cancellation support capability
  • the base station subsystem determines whether the mobile terminal has single antenna interference suppression cancellation support capability by applying multiple rounds of co-channel interference
  • the implementation manner for example, the maximum possible mode, as long as the analysis result obtained by applying the same frequency interference in one round is better than the preset threshold threshold, that is, the mobile terminal has the single antenna interference suppression cancellation support capability; or,
  • the strongest limit principle is that the analysis result obtained by applying the same-frequency interference in each round is better than the preset threshold value, and it is judged that the mobile terminal has the single-antenna interference suppression elimination support capability.
  • the modulation method of the co-channel interference applied by the base station subsystem may be various.
  • the co-channel interference is an interference signal having the same phase as the signal to be measured, and the same-frequency interference signal and the measured signal are respectively GMSK ( Gaussian-Filtered Minimum Shift Keying, after the modulation, the two modulated signals are vector-added to form a downlink signal and sent to the mobile terminal; or a phase difference from the measured signal, pie/ 2 (ie ⁇ /2 ) interference signal, the same frequency interference signal and the measured signal are respectively GMSK modulated, then the two modulated signals are vector added to form a downlink signal and sent to the mobile terminal;
  • an adaptive QPSK Quadature Phase Shift Keying
  • the downlink signal is sent to the mobile terminal.
  • Adaptive QPSK modulation can use the prior art in the prior literature, such as the method provided by 3GPP TS 45.004.
  • the same frequency interference signal and the measured signal use different training sequences.
  • the BTS in the base station subsystem may separately complete the process of actively obtaining the single antenna interference suppression cancellation support capability of the mobile terminal, or the BSC and the BTS may jointly complete the single antenna interference suppression cancellation of the mobile terminal. The process of supporting capabilities.
  • the BTS can determine the mobile terminal that needs to be aware of the single antenna interference suppression cancellation support capability, or The mobile terminal that is determined by the BSC to determine the single antenna interference suppression cancellation support capability, and then informs the BTS; applies one or more rounds to the specific type of downlink frame of the mobile terminal to be tested for the single antenna interference suppression cancellation support capability.
  • the frequency interference can be completed by the BTS, and the received signal parameters in the measurement report reported by the mobile terminal during the application of the same frequency interference are analyzed, and whether the mobile terminal has the single antenna interference suppression cancellation support capability can be completed by the BTS or the BSC, or This is done by the BTS and the BSC, and the present invention does not specifically limit this.
  • the mobile terminal is in a dedicated mode.
  • the base station subsystem actively learns the single-antenna interference suppression cancellation capability of the mobile terminal by applying the same-frequency interference to the SID frame, including: Step 201: The base station subsystem determines, by using the relevant parameters of the mobile terminal interference processing capability in the measurement report sent by the mobile terminal, such as the received signal quality of the complete set, to determine the mobile terminal that needs to learn the single antenna interference suppression cancellation support capability.
  • the base station subsystem can be determined in various manners, for example, by using relevant parameters in the measurement report sent by the mobile terminal to reflect the interference processing capability of the mobile terminal, such as the received signal quality of the full set, the received signal strength of the complete set to determine the mobile terminal; or the base station subsystem is based on Assessing the uplink measurement results to determine that one or some mobile terminals served by certain carrier frequencies or cells need to perform single-antenna interference suppression cancellation support capability; or the base station subsystem determines the carrier frequency based on the traffic load or One or some mobile terminals serving the cell need to be aware of the single antenna interference suppression cancellation support capability.
  • the mobile terminal that needs to perform the single-antenna interference suppression cancellation support capability is determined by using relevant parameters in the measurement report transmitted by the mobile terminal that reflect the interference processing capability of the mobile terminal, such as the received signal quality of the complete set.
  • Step 201 is an optional step, and the mobile terminal that needs to perform the single antenna interference suppression cancellation support capability may be the default one or some mobile terminals.
  • Co-channel interference The modulation method of the co-channel interference applied by the base station subsystem may be various.
  • the co-channel interference is an interference signal with the same phase as the signal to be measured modulated by GMSK, or a phase difference from the measured signal.
  • the GMSK modulated signal can be embodied as an adaptive QPSK modulated signal composed of the measured signal.
  • the power of the same-frequency interference can be various, such as the power of the same-frequency interference and the measured signal, or the same-frequency interference is 3 dB higher than the measured signal.
  • the same-frequency interference with the QPSK modulation of the measured signal is applied to the downlink SID frame of the mobile terminal, and the power of the same-frequency interference is higher than the measured signal power by 3 dB.
  • Step 203 The base station subsystem applies the co-channel interference to the SID frames belonging to the same mobile terminal during the discontinuous transmission, and the co-channel interference is continuously applied to some or all of the SID frames before the end of the discontinuous transmission.
  • the frame number pair 104 during discontinuous transmission may be spared (ie, frame number mod 104), and the result of the remainder is equal to (52, 53 , 54, 55, 56, 57, 58, 59) these frames are SID frames, the co-channel interference is applied to these SID frames, and the co-channel interference is continuously applied to some or all of the SID frames before the end of the discontinuous transmission;
  • the frame number of the discontinuous transmission period is 104, (ie, frame number mod 104), and the frames with the result of the remainder equal to (0, 2, 4, 6, 52, 54, 56, 58) are
  • the SID frame of the mobile terminal in the first subchannel applies the co-channel interference to the SID frames, and
  • the co-channel interference is applied to the emerging SID frame, and the co-channel interference is continuously applied to some or all of the discontinuous transmission before the end On the SID frame; in this embodiment, it is used to apply the co-channel interference to all SID frames before the end of the discontinuous transmission of the mobile terminal.
  • FIG. 4 a schematic diagram of the base station subsystem applying interference to the SID frame for full rate speech coding, and as shown in FIG. 5, for the half rate speech coding, the base station subsystem applies interference to the SID frame, and As shown in Figure 6, for the adaptive multi-rate speech coding, the base station subsystem applies a mask to the SID frame.
  • Step 204 Acquire a total set received signal quality, a complete set received signal strength, a subset received signal quality, a subset received signal strength, and the like in the one or more measurement reports reported by the mobile terminal during the application of the same frequency interference.
  • the first method independently obtains the average value of the received signal quality and the subset received signal quality parameter values in the N consecutive recent measurement reports; For the N consecutively recent, full set of received signal quality is less than a specific set threshold threshold TO (such as less than 2) in the measurement report of the total set of received signal quality parameter values to find the standard deviation; for N consecutive recent, subset The received signal quality is less than a specific threshold value T1 (for example, less than 3) of the subset of the received signal quality parameter values in the measurement report to obtain the standard deviation; the third method is combined with the received signal quality in the full set of the downlink measurement report, the total received signal strength Acquire together, for example, only the average value of the received signal quality parameter value in the measurement report containing the total received signal strength less than a certain threshold value T2; only the measurement containing the subset received signal strength less than a certain threshold value T3 The subset of the report receives the signal quality parameter values to find the average.
  • a specific set threshold threshold TO such as less than 2
  • T1 for example
  • the fourth method combines the received signal quality of the complete set in the downlink measurement report, the received signal strength of the complete set, the received signal quality of the subset, and the received signal strength of the subset together, for example, only the received signal strength of the complete set is less than a certain threshold value T4.
  • the total set received signal quality parameter value in the measurement report is obtained by standard deviation, and only the standard deviation is obtained for the subset received signal quality parameter value in the measurement report containing the subset received signal strength less than a certain threshold value T5.
  • T5 For the total set received signal quality / total set received signal strength, subset received signal quality / subset received signal strength and other two types of parameter values, respectively, are calculated separately.
  • the signal quality parameter value is the standard deviation.
  • T1 the threshold value of the specified threshold value
  • the interference suppression capability of the terminal is considered to be strong, which may be a mobile terminal supporting single-antenna interference suppression. Otherwise, it is considered that the single antenna interference is not supported.
  • the method may be as follows: Method 1, if the mean value of the received signal quality parameter values in the N consecutive consecutive measurement reports is less than a specific threshold value RQAVG11 (for example, less than 3), and N consecutively recent The mean value of the received signal quality parameter values in the subset of the measurement report is less than For a specific threshold value RQAVG12 (for example, less than 2), it is considered that the terminal has strong interference suppression capability, which may be a mobile terminal supporting single antenna interference suppression cancellation.
  • Method 2 if N consecutively recent, the total received signal quality is less than The standard deviation of the received signal quality parameter values in the measurement report of the threshold value TO (for example, less than 3) of a specific setting is smaller than a specific threshold value RQCVl l (for example, less than 0.05), and N consecutively recent, subsets If the standard deviation of the subset received signal quality parameter value in the measurement report whose received signal quality is less than the specified threshold value T1 (for example, less than 2) is less than the specified threshold value RQCV12 (for example, less than 0.05), the interference of the terminal is considered.
  • T1 for example, less than 2
  • RQCV12 for example, less than 0.05
  • the suppression capability is strong, which may be a mobile terminal supporting single-antenna interference suppression cancellation; or, method 3, such as the total set received signal quality parameter value in the measurement report of the complete set received signal strength less than a certain threshold value T2 (for example, less than -65 dBm)
  • T2 for example, less than -65 dBm
  • the mean value is less than the threshold threshold RQAVG21 (for example, less than 3), and the received signal strength of the subset is less than a certain threshold value T3
  • the threshold threshold RQAVG22 for example, less than 2
  • the fourth method if the received signal strength of the complete set is less than a certain threshold value T4 (for example, less than -65 dBm), the standard deviation of the received signal quality parameter value in the measurement report is less than the threshold threshold RQCV21 (for example, less than 0.05), and the subset If the standard deviation of the subset received signal quality parameter value in the measurement report whose received signal strength is less than a certain threshold value T5 (for example, less than -65dBm) is less than the threshold threshold RQCV22 (for example, less than 0.05), the interference suppression capability of the terminal is considered to be strong. , may be a mobile terminal that supports single antenna interference suppression cancellation.
  • Step 206 The base station subsystem may have multiple processing manners for the result of the determination of the mobile terminal that may support the single-antenna interference suppression cancellation. For example, in the first method, the process of actively learning the capability of the mobile terminal ends, and step 207 is performed; In the second method, the base station subsystem decides to continue to apply another round of co-channel interference based on the result, that is, returns to step 202. Similarly, the power intensity and duration of applying the co-channel interference can be set according to the strategy of the base station subsystem, and Equivalent to the previous round of the corresponding settings, can also be different.
  • the base station subsystem analyzes the received signal quality, the received signal strength and other related parameters in the one or more measurement reports reported by the mobile terminal during the round of the same frequency interference, for example, whether the parameters are better than a set threshold threshold , the threshold threshold can be equal to the corresponding setting of the previous round, or it can be different. And so on, until the base station subsystem considers that the process of actively learning the capabilities of the mobile terminal ends, step 207 is performed.
  • the processing of multiple determination results after applying multiple rounds of co-channel interference can be implemented in various ways according to the specific application environment and implementation characteristics according to the base station subsystem. For example, the maximum possible mode is adopted.
  • the mobile terminal is considered to have single-antenna interference suppression. Eliminate the ability; or use the strongest limit principle, in each round of the application of the same-frequency interference, the result of each judgment is that the mobile terminal has the single-antenna interference suppression cancellation capability, the mobile terminal is considered Single antenna interference suppression cancellation capability.
  • the base station subsystem considers that the process of actively learning the capability of the mobile terminal ends, and performs step 207. Step 207: The process in which the base station subsystem actively learns the single antenna interference suppression cancellation capability of the mobile terminal ends.
  • Embodiment 2 As shown in FIG. 6, the mobile terminal is in a dedicated mode.
  • the base station subsystem actively learns the single antenna of the mobile terminal by applying the same-frequency interference to the downlink voice frame and the SID frame and the SACCH frame.
  • the step of the interference suppression cancellation capability includes: Step 301: The base station subsystem determines, by using a correlation parameter of the mobile terminal interference processing capability in the measurement report sent by the mobile terminal, such as a received signal quality of the complete set, to determine a single antenna interference suppression cancellation support capability.
  • a correlation parameter of the mobile terminal interference processing capability in the measurement report sent by the mobile terminal such as a received signal quality of the complete set
  • the base station subsystem can be determined in various manners, for example, by using relevant parameters in the measurement report sent by the mobile terminal to reflect the interference processing capability of the mobile terminal, such as the received signal quality of the full set, the received signal strength of the complete set to determine the mobile terminal; or the base station subsystem is based on Assessing the uplink measurement results to determine that one or some mobile terminals served by certain carrier frequencies or cells need to perform single-antenna interference suppression cancellation support capability; or the base station subsystem determines the carrier frequency based on the traffic load or One or some mobile terminals serving the cell need to be aware of the single antenna interference suppression cancellation support capability.
  • the mobile terminal that needs to perform the single-antenna interference suppression cancellation support capability is determined by using relevant parameters in the measurement report transmitted by the mobile terminal that reflect the interference processing capability of the mobile terminal, such as the received signal quality of the complete set.
  • Step 301 is an optional step, and the mobile terminal that needs to perform the single antenna interference suppression cancellation support capability may be the default one or some mobile terminals.
  • Step 302 Since there is uncertainty in time due to the end of the discontinuous transmission process, there are the following cases in the 26 multiframe period: where some of the frames are frames during discontinuous transmission (including SID frames and SACCH), and some frames The speech frame after the end of the discontinuous transmission (ie TCH frame).
  • the base station subsystem jointly applies the same-frequency interference with the QPSK modulation of the measured signal in combination with the downlink voice frame and the SID frame and the SACCH frame of the mobile terminal that are determined to be required to perform the single-antenna interference suppression cancellation support capability.
  • the modulation method of the co-channel interference applied by the base station subsystem may be various.
  • the co-channel interference is an interference signal with the same phase as the signal to be measured modulated by GMSK, or a phase difference from the measured signal.
  • the GMSK modulated signal can be embodied as an adaptive QPSK modulated signal composed of the measured signal.
  • the power of the same-frequency interference can be various, such as the power of the same-frequency interference and the measured signal, or the same-frequency interference is 3 dB higher than the measured signal.
  • the downlink speech frame of the mobile terminal and the SID frame and the SACCH frame are jointly applied to perform the same-frequency interference with the QPSK modulation of the measured signal, and the power of the same-frequency interference is higher than the measured signal.
  • the power is 3dB.
  • the co-channel interference to the speech frame is continuously applied to the end of the first 26 multiframe after the end of the discontinuous transmission.
  • the frame number pair 104 during discontinuous transmission is spared (ie, frame number mod 104), and the result of the remainder is equal to (52, 53 , 54, 55, 56, 57, 58
  • the frames of 59 are SID frames, and the co-channel interference is applied to the SID frames, and the co-channel interference is continuously applied to some or all of the SID frames before the end of the discontinuous transmission; co-channel interference to the SACCH frame Applies to the position of the SACCH frame.
  • the same-frequency interference to the speech frame is continuously applied to the end of the first 26 multi-frame after the end of the discontinuous transmission.
  • the frame number pair 104 during discontinuous transmission is taken over (ie, frame number mod 104), and the result of the remainder is equal to (0, 2, 4, 6, 52, 54, 56, 58)
  • These frames are the SID frames of the mobile terminal in the first subchannel, and the co-channel interference is applied to the SID frames, and the co-channel interference is continuously applied to the end of the discontinuous transmission.
  • co-channel interference to the SACCH frame is applied to the position of the SACCH frame.
  • the same-frequency interference to the speech frame is continuously applied to the end of the first 26 multi-frame after the end of the discontinuous transmission.
  • the co-channel interference is applied to the emerging SID frame, and the co-channel interference is continuously applied to some or all of the discontinuous transmission before the end On the SID frame; co-channel interference to the SACCH frame is applied to the position of the SACCH frame.
  • the same-frequency interference to the speech frame is continuously applied to the end of the first 26 multi-frame after the end of the discontinuous transmission.
  • the same-frequency interference is applied to all SID frames before the discontinuous transmission of the mobile terminal, and the same-frequency interference to the SACCH frame is applied to all SACCH frames, and the same is true for the voice frame.
  • the frequency interference is continuously applied to all speech frames of the first 26 multiframe after the end of the discontinuous transmission.
  • FIG. 7 is a schematic diagram of applying interference to the base station subsystem for full rate speech coding, and as shown in FIG. 8, a schematic diagram of applying interference to the base station subsystem for half rate speech coding, and as shown in FIG.
  • Step 304 Acquire a total set received signal quality, a complete set received signal strength, a subset received signal quality, a subset received signal strength, and the like in the one or more measurement reports reported by the mobile terminal during the application of the same frequency interference.
  • the first method independently obtains the average value of the received signal quality and the subset received signal quality parameter values in the N consecutive recent measurement reports; For the N consecutively recent, full set of received signal quality is less than a specific set threshold threshold T6 (such as less than 2) in the measurement report of the total set of received signal quality parameter values to find the standard deviation; for N consecutive recent, subset The received signal quality is less than a specific threshold value T7 (for example, less than 3) of the subset of the received signal quality parameter values in the measurement report to obtain the standard deviation; the third method is combined with the received signal quality in the full set of the downlink measurement report, the total received signal strength Obtain together, for example, only the average value of the received signal quality parameter value in the measurement report containing the total received signal strength less than a certain threshold value T8; only the measurement containing the subset received signal strength less than a certain threshold value T9 The subset of the report receives the signal quality parameter values to find the average.
  • a specific set threshold threshold T6 such as less than 2
  • T7 for
  • the fourth method combines the received signal quality of the complete set in the downlink measurement report, the received signal strength of the complete set, the received signal quality of the subset, and the received signal strength of the subset together, for example, only the received signal strength of the complete set is less than a threshold threshold T10.
  • the total set of received signal quality parameter values in the measurement report The standard deviation is only the standard deviation of the subset received signal quality parameter values in the measurement report containing the subset received signal strength less than a certain threshold value Ti l .
  • the signal quality parameter value is the standard deviation.
  • the received signal quality of the subset is less than the threshold value of the specified threshold T7 (such as less than 3).
  • Step 305 The base station subsystem performs two types of parameter values based on the acquisition result of step 304, based on the received signal quality of the corpus, the received signal strength of the subset, the received signal quality of the subset, and the received signal strength of the subset, respectively.
  • the threshold value of the threshold is compared.
  • the method may be as follows: Method 1, if the mean value of the received signal quality parameter values in the N consecutive consecutive measurement reports is less than a specific threshold value RQAVG31 (for example, less than 3), and N consecutive recent If the mean value of the subset received signal quality parameter value in the measurement report is smaller than a specific threshold value RQAVG32 (for example, less than 2), the terminal has a strong interference suppression capability, and may be a mobile terminal supporting single antenna interference suppression cancellation; Second, if N consecutively recent, the total set received signal quality is less than a specific threshold value TO (such as less than 3), the standard deviation of the received signal quality parameter value in the measurement report is less than a specific threshold value RQCV31 (such as Less than 0.05), and N consecutively recent, the subset received signal quality is
  • the standard deviation of the received signal quality parameter values in the measurement report is less than the specified threshold.
  • the value RQCV32 (for example, less than 0.05) is considered to be strong in the interference suppression capability of the terminal, which may support the elimination of single antenna interference suppression.
  • Mobile terminal or, method three, if the total received signal quality parameter value in the measurement report whose received signal strength is less than a certain threshold value T2 (for example, less than -65dBm) is smaller than the threshold threshold RQAVG41 (for example, less than 3), and If the subset received signal quality parameter value in the measurement report whose subset received signal strength is less than a certain threshold value T3 (such as less than -65dBm) is less than the threshold threshold RQAVG42 (such as less than 2), the interference suppression capability of the terminal is considered.
  • T2 for example, less than -65dBm
  • T3 such as less than -65dBm
  • the fourth method may support single antenna interference suppression In addition to the mobile terminal.
  • the standard deviation of the received signal quality parameter value in the measurement report is less than the threshold threshold RQCV41 (for example, less than 0.05)
  • the subset If the standard deviation of the subset received signal quality parameter value in the measurement report whose received signal strength is less than a certain threshold value T5 (such as less than -65dBm) is less than the threshold threshold RQCV42 (for example, less than 0.05), the interference suppression capability of the terminal is considered to be strong.
  • Step 306 The base station subsystem may perform multiple processing manners for the mobile terminal that may support the single-antenna interference suppression cancellation. For example, in the first method, the process of actively learning the capability of the mobile terminal ends, and step 307 is performed; In the second method, the base station subsystem decides to continue to apply another round of co-channel interference based on the result, and returns to step 302. Similarly, the power intensity and duration of applying the co-channel interference can be set according to the strategy of the base station subsystem, which can be equivalent. The corresponding settings in the previous round can also be different.
  • the base station subsystem analyzes the received signal quality, the received signal strength and other related parameters in the one or more measurement reports reported by the mobile terminal during the round of the same frequency interference, for example, whether the parameters are better than a set threshold threshold , the threshold threshold can be equal to the corresponding setting of the previous round, or it can be different.
  • step 307 is performed.
  • the processing of multiple determination results after applying multiple rounds of co-channel interference can be implemented in various ways according to the specific application environment and implementation characteristics according to the base station subsystem. For example, the maximum possible mode is adopted.
  • the mobile terminal is considered to have single-antenna interference suppression. Eliminate the ability; or use the strongest limit principle, in each round of the application of the same-frequency interference, the result of each judgment is that the mobile terminal has the single-antenna interference suppression cancellation capability, the mobile terminal is considered Single antenna interference suppression cancellation capability.
  • the base station subsystem considers that the process of actively learning the capability of the mobile terminal ends, and performs step 307.
  • Step 307 The process in which the base station subsystem actively learns the single antenna interference suppression cancellation capability of the mobile terminal ends.
  • an apparatus for learning the capability of a mobile terminal is applicable to a base station subsystem, including a test target determining unit 101 and a capability learning unit 102, wherein: the test target determining unit 101 is configured to: Determining a mobile terminal to be tested for single antenna interference suppression cancellation support capability, and informing the capability learning unit 102; the capability learning unit 102 is configured to: apply a round of SID frames of the mobile terminal to be tested for single antenna interference suppression cancellation support capability Or applying multiple rounds of co-channel interference, or applying one or more rounds of co-channel interference to the SID frame of the mobile terminal for testing the single antenna interference suppression cancellation support capability and other specific types of downlink frames, and analyzing the mobile terminal during the application of the same frequency interference.
  • the received signal parameter in the reported measurement report determines whether the mobile terminal has single antenna interference suppression cancellation support capability.
  • the test target determining unit 101 is an optional module, and the capability learning unit 102 can set a default one or some terminals to be the mobile terminal to be tested for the single antenna interference suppression cancellation support capability.
  • the test target determining unit 101 is configured to: determine the mobile terminal to be tested for the single antenna interference suppression cancellation support capability according to one or more of the following information, and notify the capability learning unit: (1)
  • the measurement report sent by the mobile terminal reflects the parameters of the mobile terminal interference processing capability; (2) the measurement result for the uplink; (3) the traffic load.
  • the other particular types of downstream frames include voice channel (TCH) frames and/or slow associated control channel (SACCH) frames.
  • the capability learning unit 102 is configured to: perform Gaussian Filtering Minimum Shift Keying (GMSK) modulation on the same-frequency interference signal and the measured signal, respectively, and then modulate the same-frequency interference signal and the measured signal.
  • GMSK Gaussian Filtering Minimum Shift Keying
  • the co-channel interference signal is an interference signal having the same phase as the measured signal, or an interference signal that is ⁇ /2 in phase with the measured signal; or After the same-frequency interference signal and the measured signal are directly subjected to adaptive quadrature phase shift keying (QPSK) modulation, the modulated downlink signal is sent to the mobile terminal.
  • QPSK adaptive quadrature phase shift keying
  • the capability learning unit 102 is configured to: apply a round of co-channel interference to the SID frame of the mobile terminal to be tested for the single antenna interference suppression cancellation support capability, and analyze the reported by the mobile terminal during the application of the same frequency interference. Measure the received signal parameter in the report, and determine whether to continue to apply the same-frequency interference based on the analysis result, and if it is determined to continue to apply the same-frequency interference, continue to apply the same-frequency interference to the SID frame of the mobile terminal until the mobile terminal is determined Whether it has single antenna interference suppression In addition to the support capability; or, applying a round of co-channel interference to the SID frame of the mobile terminal to be tested for the single antenna interference suppression cancellation support capability and other specific types of downlink frames, and analyzing the reported by the mobile terminal during the application of the co-channel interference Measure the received signal parameters in the report, and determine whether to continue to apply the same-frequency interference based on the analysis result, and if it is determined to continue to apply the same-frequency interference, continue to apply the same-frequency interference.
  • the capability learning unit 102 is configured to: after applying a round of co-channel interference, when the analysis result obtained by applying the same-frequency interference is better than a preset threshold threshold, determining that the mobile terminal has single-antenna interference Suppressing the cancellation support capability; or, after applying multiple rounds of co-channel interference, if at least one of the rounds of applying the same-frequency interference is better than the preset threshold threshold, determining that the mobile terminal has single-antenna interference suppression cancellation Supporting capability; or, after applying multiple rounds of co-channel interference, if the analysis result obtained by applying the same-frequency interference in each round is better than a preset threshold threshold, determining that the mobile terminal has single-antenna interference suppression cancellation support capability .
  • the received signal parameter includes a ensemble received signal quality parameter and a subset received signal quality parameter; or the received signal parameter includes a corpus received signal quality parameter, a corpusched received signal strength parameter, a subset received signal quality parameter, and a subset received The signal strength parameter; the capability learning unit 102 is configured to: when analyzing the received signal parameter in the measurement report reported by the mobile terminal during the application of the co-channel interference: the received signal quality of the corpus in the N consecutive recent measurement reports The parameter value is averaged, and the obtained result is judged to be smaller than the first result threshold value, and the subset of the N consecutive recent measurement reports is averaged, and the result is determined to be smaller than the second result threshold.
  • the device for learning the capabilities of the mobile terminal may be located in the BTS, or may be partially located in the BTS, and partially located in the BSC (for example, the test target determining unit 101 is located in the BSC, and the capability learning unit 102 is located in the BTS; or the test target determining unit 101 is located.
  • the test target determining unit 101 is located in the BSC, and the capability learning unit 102 is located in the BTS; or the test target determining unit 101 is located.
  • a part of the capability learning unit 102 is located in the BTS, and a part is located in the BSC.
  • the specific implementation may be implemented in various manners, which is not specifically limited by the present invention.
  • the present invention provides a method and apparatus for a base station subsystem to learn the capabilities of a mobile terminal, which can actively detect when the mobile terminal does not support the single antenna interference suppression cancellation support capability during discontinuous transmission. Its single-antenna interference suppression cancellation support capability enables efficient use of single-antenna interference suppression cancellation techniques, enabling GSM networks to achieve good overall network performance in interference-constrained environments.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Quality & Reliability (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

本发明公开了一种基站子系统获知移动终端的能力的方法和装置，能够在非连续发射时，在移动终端不上报单天线干扰抑制消除支持能力的情况下，主动地检测出其单天线干扰抑制消除的支持能力，从而可以有效地使用单天线干扰抑制消除技术，能够使GSM网络在干扰受限的环境中，依然得到很好的整体网络性能。

Description

一种基站子系统获知移动终端能力的方法和装置
技术领域 本发明涉及移动通信领域， 尤其涉及一种实现 GSM ( Global System for Mobile Communications , 全球移动通讯系统） 系统中， 基站子系统获知移动 终端的能力的方法和装置。
背景技术
GSM 系统的网络构架如图 1 所示， 包括核心网、 BSC ( Base Station Controller, 基站控制器）和 BTS ( Base Station, 基站）三层， BSC和 BTS 又可被合称为基站子系统（BSS Base Station Subsystem ) ， 其中， 核心网和 BSC之间的接口称为 A接口， BSC与 BTS之间的接口称为 Abis接口， BTS 与移动终端间的接口称为 Um接口； 核心网、 BSC和 BTS协同工作， 向移 动终端提供完整的移动话音服务功能。 GSM无线网络是由若干个基站提供覆盖和服务的， GSM商用无线网络 往往需要几十个甚至几百个基站才能完成覆盖并满足话务需求， 而 GSM 网 络能利用的频率资源又非常有限， 这就构成了一对矛盾。 为此， GSM系统釆 用蜂窝结构来解决话务需求与移动通信系统频率资源有限的矛盾。 但蜂窝结 构带来的频率复用方式不可避免地给 GSM 网络引入了相当数量的同频干扰 和邻频干扰， 并且这些同频干扰和邻频干扰的干扰水平随着频率复用程度的 紧密而更加严峻， 使 GSM网络成为干扰受限的网络。 随着技术的演进， GSM与 HSPA+(演进的高速分组接入）或 LTE( Long Term Evolution, 长期演进）的共谱运营会导致运营商希望将有限的频谱资源 在不同的无线技术（GSM, HSPA+, LTE等）中动态共享， 其中的一个应用 场景为： HSPA+或 LTE占用了大部分频谱资源， GSM占用较少部分频谱资 源，但 GSM用户的数量并没有急剧减少。 这就需要 GSM网络以相对更少的 频谱资源来为这些用户提供话音服务， 此时， 对 GSM 系统釆用更为紧密的 频率复用方式是解决频谱资源困境的方式之一， 但显然， 这种更紧密的频率 复用也必然带来更多的同频干扰和邻频干扰， 也同样使 GSM 网络更加成为 干扰受限的网络。 单天线干扰抑制消除技术的出现， 使移动终端可以利用这一技术在消除 干扰方面的优势， 在干扰受限的环境中得到很好的话音处理性能。 比如， 一 些支持单天线干扰抑制消除技术的移动终端能在同频干扰为 OdB或 3dB的场 景下， 依然得到很好的话音处理性能。 单天线干扰抑制消除技术使得基站子 系统能将一些相对干扰较大， 质量较差的信道分配给支持单天线干扰抑制消 除技术的移动终端， 而不是分配给传统的不支持该技术的移动终端， 通过这 样的处理， 能在干扰受限的环境中， 依然得到很好的整体网络性能。 现有技术中， 移动终端通过与基站子系统之间的接口上报移动终端的单 天线干扰抑制消除的支持能力， 但如果支持单天线干扰抑制消除的移动终端 因为一些原因， 如软件设计缺陷， 没有上报其支持能力， 那么基站子系统就 无法得知该移动终端的单天线干扰抑制消除的支持能力。
发明内容 基站子系统可以对一个或多个复帧周期的特定帧连续地施加同频干扰， 在移动终端不上^^其单天线干扰抑制消除支持能力的情况下， 主动地检测出 其单天线干扰抑制消除的支持能力。 但这种方式只能用于基站连续发射的情 况， 在非连续发射时， 基站子系统如何获知移动终端的单天线干扰抑制消除 的支持能力， 是亟需解决的问题。 本发明所要解决的技术问题是提供一种基站子系统获知移动终端的能力 的方法和装置， 能够在非连续发射时， 获知移动终端的单天线干扰抑制消除 的支持能力。 为了解决上述技术问题， 本发明提供一种基站子系统获知移动终端能力 的方法， 包括： 基站子系统对待测试单天线干扰抑制消除支持能力的移动终端的静音插 入描述（ SID ) 帧施加一轮或多轮同频干扰， 分析施加同频干扰期间所述移 动终端上报的测量报告中的接收信号参数， 判断所述移动终端是否具有单天 线干扰抑制消除支持能力； 或者， 基站子系统对待测试单天线干扰抑制消除支持能力的移动终端的 SID帧 和其它特定类型的下行帧施加一轮或多轮同频干扰， 分析施加同频干扰期间 所述移动终端上报的测量报告中的接收信号参数， 判断所述移动终端是否具 有单天线干扰抑制消除支持能力。 优选地， 在施加一轮或多轮同频干扰之前， 所述方法还包括： 所述基站子系统确定所述待测试单天线干扰抑制消除支持能力的移动终 端； 其中， 所述基站子系统根据如下信息中的一种或多种确定所述待测试单 天线干扰抑制消除支持能力的移动终端：
( 1 )移动终端发送的测量报告中体现移动终端干扰处理能力的参数；
( 2 )对上行的测量结果；
( 3 )话务负荷。 优选地， 所述其它特定类型的下行帧包括语音信道（TCH )帧和 /或慢速 随路控制信道（ SACCH ) 帧。 优选地， 在施加一轮或多轮同频干扰的步骤中， 所述基站子系统将同频干扰信号与被测信号分别进行高斯滤波最小移频 键控 ( GMSK )调制后， 再将调制后的同频干扰信号与被测信号进行矢量相 加合成一个下行信号发送给所述移动终端； 所述同频干扰信号是与被测信号 相位相同的干扰信号， 或者是与被测信号相位相差 π/2的干扰信号； 或者， 所述基站子系统将同频干扰信号与被测信号直接进行自适应正交相移键 控（QPSK )调制后， 将调制后的下行信号发送给所述移动终端。 优选地， 所述基站子系统对待测试单天线干扰抑制消除支持能力的移动 终端的 SID帧施加一轮或多轮同频干扰， 分析施加同频干扰期间所述移动终 端上报的测量报告中的接收信号参数， 判断所述移动终端是否具有单天线干 扰抑制消除支持能力的步骤包括： 所述基站子系统对所述待测试单天线干扰 抑制消除支持能力的移动终端的 SID帧施加一轮同频干扰， 分析施加同频干 扰期间所述移动终端上报的测量报告中的接收信号参数， 并基于分析结果确 定是否继续施加同频干扰， 若确定继续施加同频干扰， 则对所述移动终端的 SID帧继续施加同频干扰， 直到判断出所述移动终端是否具有单天线干扰抑 制消除支持能力； 所述基站子系统对待测试单天线干扰抑制消除支持能力的移动终端的 SID帧和其它特定类型的下行帧施加一轮或多轮同频干扰， 分析施加同频干 扰期间所述移动终端上报的测量报告中的接收信号参数， 判断所述移动终端 是否具有单天线干扰抑制消除支持能力的步骤包括： 所述基站子系统对所述 待测试单天线干扰抑制消除支持能力的移动终端的 SID帧和其它特定类型的 下行帧施加一轮同频干扰， 分析施加同频干扰期间所述移动终端上报的测量 报告中的接收信号参数， 并基于分析结果确定是否继续施加同频干扰， 若确 定继续施加同频干扰， 则对所述移动终端的 SID帧和其它特定类型的下行帧 继续施加同频干扰， 直到判断出所述移动终端是否具有单天线干扰抑制消除 支持能力。 优选地， 在所述基站子系统施加一轮同频干扰， 分析施加同频干扰期间 所述移动终端上报的测量报告中的接收信号参数， 判断所述移动终端是否具 有单天线干扰抑制消除支持能力的步骤中， 当施加同频干扰得到的分析结果优于预先设定的门限阔值， 则所述基站 子系统判断所述移动终端具有单天线干扰抑制消除支持能力。 优选地， 在所述基站子系统施加多轮同频干扰， 分析施加同频干扰期间 所述移动终端上报的测量报告中的接收信号参数， 判断所述移动终端是否具 有单天线干扰抑制消除支持能力的步骤中， 若其中一轮施加同频干扰得到的分析结果优于预先设定的门限阔值， 则 所述基站子系统判断所述移动终端具有单天线干扰抑制消除支持能力；或者 , 若每一轮施加同频干扰得到的分析结果均优于预先设定的门限阔值， 则 所述基站子系统判断所述移动终端具有单天线干扰抑制消除支持能力。 优选地， 所述接收信号参数包括全集接收信号质量参数和子集接收信号 质量参数； 或者， 所述接收信号参数包括全集接收信号质量参数、 全集接收 信号强度参数、 子集接收信号质量参数和子集接收信号强度参数； 所述分析施加同频干扰期间所述移动终端上报的测量报告中的接收信号 参数的步骤包括： 对 N个连续最近的测量报告中的全集接收信号质量参数值求均值，判断 得到的结果是否小于第一结果门限阔值， 以及， N个连续最近的测量报告中 的子集接收信号质量参数值求均值 , 判断得到的结果是否小于第二结果门限 阔值； 或者， 对 N个连续最近的、全集接收信号质量参数值小于第一条件门限阔值的 测量报告中的接收信号质量参数值求标准差， 判断得到的结果是否小于第三 结果门限阔值， 以及， 对 N个连续最近的、 子集接收信号质量参数值小于第 二条件门限阔值的测量报告中的接收信号质量参数值求标准差， 判断得到的 结果是否小于第四结果门限阔值； 或者， 对含有全集接收信号强度参数值小于第三条件门限阔值的测量报告中的 全集接收信号质量参数值求均值， 判断得到的结果是否小于第五结果门限阔 值， 以及， 对含有子集接收信号强度参数值小于第四条件门限阔值的测量报 告中的子集接收信号质量参数值求均值， 判断得到的结果是否小于第六结果 门限阔值； 或者， 对含有全集接收信号强度参数值小于第五条件门限阔值的测量报告中的 全集接收信号质量参数值求标准差， 判断得到的结果是否小于第七结果门限 阔值， 以及， 对含有子集接收信号强度参数值小于第六条件门限阔值的测量 报告中的子集接收信号质量参数值求标准差， 判断得到的结果是否小于第八 结果门限阔值； 其中， N为整数。 为了解决上述技术问题， 本发明提供一种获知移动终端能力的装置， 包 括能力获知单元， 其中： 所述能力获知单元设置成： 对待测试单天线干扰抑制消除支持能力的移 动终端的静音插入描述（SID ) 帧施加一轮或多轮同频干扰， 或者对待测试 单天线干扰抑制消除支持能力的移动终端的 SID帧和其它特定类型的下行帧 施加一轮或多轮同频干扰， 分析施加同频干扰期间所述移动终端上报的测量 报告中的接收信号参数， 判断所述移动终端是否具有单天线干扰抑制消除支 持能力。
优选地， 所述装置还包括测试目标确定单元， 其中： 所述测试目标确定单元设置成： 根据如下信息中的一种或多种确定待测 试单天线干扰抑制消除支持能力的移动终端，并告知所述能力获知单元： （ 1 ) 移动终端发送的测量报告中体现移动终端干扰处理能力的参数； ( 2 )对上行 的测量结果； （3 )话务负荷。 优选地， 所述其它特定类型的下行帧包括语音信道（TCH )帧和 /或慢速 随路控制信道（SACCH ) 帧。 优选地， 所述能力获知单元是设置成： 将同频干 4尤信号与被测信号分别 进行高斯滤波最小移频键控（GMSK )调制后， 再将调制后的同频干扰信号 与被测信号进行矢量相加合成一个下行信号发送给所述移动终端， 所述同频 干扰信号是与被测信号相位相同的干扰信号，或者是与被测信号相位相差 π/2 的干扰信号； 或者， 将同频干扰信号与被测信号直接进行自适应正交相移键 控（QPSK )调制后， 将调制后的下行信号发送给所述移动终端。 优选地， 所述能力获知单元是设置成： 对所述待测试单天线干扰抑制消 除支持能力的移动终端的 SID帧施加一轮同频干扰， 分析施加同频干扰期间 所述移动终端上报的测量报告中的接收信号参数， 并基于分析结果确定是否 继续施加同频干扰， 若确定继续施加同频干扰， 则对所述移动终端的 SID帧 继续施加同频干扰， 直到判断出所述移动终端是否具有单天线干扰抑制消除 支持能力； 或者， 对所述待测试单天线干扰抑制消除支持能力的移动终端的 SID帧和其它特定类型的下行帧施加一轮同频干扰， 分析施加同频干扰期间 所述移动终端上报的测量报告中的接收信号参数， 并基于分析结果确定是否 继续施加同频干扰， 若确定继续施加同频干扰， 则对所述移动终端的 SID帧 和其它特定类型的下行帧继续施加同频干扰， 直到判断出所述移动终端是否 具有单天线干扰抑制消除支持能力。 优选地， 所述能力获知单元是设置成： 施加一轮同频干扰后， 当施加同 频干扰得到的分析结果优于预先设定的门限阔值， 则判断所述移动终端具有 单天线干扰抑制消除支持能力； 或者， 施加多轮同频干扰后， 若其中一轮施 加同频干扰得到的分析结果优于预先设定的门限阔值， 则判断所述移动终端 具有单天线干扰抑制消除支持能力； 或者， 施加多轮同频干扰后， 若每一轮 施加同频干扰得到的分析结果均优于预先设定的门限阔值， 则判断所述移动 终端具有单天线干扰抑制消除支持能力。 优选地， 所述接收信号参数包括全集接收信号质量参数和子集接收信号 质量参数； 或者， 所述接收信号参数包括全集接收信号质量参数、 全集接收 信号强度参数、 子集接收信号质量参数和子集接收信号强度参数； 所述能力获知单元是设置成： 在分析施加同频干扰期间所述移动终端上 报的测量报告中的接收信号参数时：对 N个连续最近的测量报告中的全集接 收信号质量参数值求均值， 判断得到的结果是否小于第一结果门限阔值， 以 及， N个连续最近的测量报告中的子集接收信号质量参数值求均值， 判断得 到的结果是否小于第二结果门限阔值； 或者， 对 N个连续最近的、 全集接收 信号质量参数值小于第一条件门限阔值的测量报告中的接收信号质量参数值 求标准差， 判断得到的结果是否小于第三结果门限阔值， 以及， 对 N个连续 最近的、 子集接收信号质量参数值小于第二条件门限阔值的测量报告中的接 收信号质量参数值求标准差， 判断得到的结果是否小于第四结果门限阔值； 或者， 对含有全集接收信号强度参数值小于第三条件门限阔值的测量报告中 的全集接收信号质量参数值求均值， 判断得到的结果是否小于第五结果门限 阔值， 以及， 对含有子集接收信号强度参数值小于第四条件门限阔值的测量 报告中的子集接收信号质量参数值求均值， 判断得到的结果是否小于第六结 果门限阔值； 或者， 对含有全集接收信号强度参数值小于第五条件门限阔值 的测量报告中的全集接收信号质量参数值求标准差， 判断得到的结果是否小 于第七结果门限阔值， 以及， 对含有子集接收信号强度参数值小于第六条件 门限阔值的测量报告中的子集接收信号质量参数值求标准差， 判断得到的结 果是否小于第八结果门限阔值； 其中， N为整数。 通过本发明， 网络能够在非连续发射时， 在移动终端不上报单天线干扰 抑制消除支持能力的情况下， 主动地检测出其单天线干扰抑制消除的支持能 力， 从而可以有效地使用单天线干扰抑制消除技术， 能够使 GSM网络在干 扰受限的环境中， 依然得到很好的整体网络性能。
附图概述 图 1 是传统 GSM系统的网络构架； 图 2 是本发明实施例一的基站子系统通过对 SID ( Silence Insertion Description, 静音插入描述） 帧施加同频干扰的方式主动获知移动终端能力 的流程图； 图 3 是本发明实施例一的对于全速率语音编码， 基站子系统对 SID 帧 施加干扰的示意图； 图 4是本发明实施例一的对于半速率语音编码，基站子系统对 SID帧施 加干扰的示意图； 图 5 是本发明实施例一的对于自适应多速率语音编码， 基站子系统对
SID帧施加干扰的示意图； 图 6 是本发明实施例二的基站子系统通过对 TCH 帧和 SID 帧和 SACCCH帧联合施加同频干扰的方式主动获知移动终端能力的流程图； 图 7 是本发明实施例二的对于全速率语音编码， 基站子系统对 TCH帧 和 SID帧和 SACCH帧联合施加干扰的示意图； 图 8 是本发明实施例二的对于半速率语音编码， 基站子系统对 TCH帧 和 SID帧和 SACCH帧联合施加干扰的示意图； 图 9 是本发明实施例二的对于自适应多速率语音编码， 基站子系统对 TCH帧和 SID帧和 SACCH帧联合施加干扰的示意图； 图 10是本发明实施例的获知移动终端的能力的装置示意图。 本发明的较佳实施方式 本发明的基本构思是， 基站子系统在非连续发射时， 通过分析移动终端 上报的测量报告， 结合对移动终端的 SID帧， 或对移动终端的 SID帧和其它 特定类型的下行帧的组合施加一轮或多轮检测用同频干扰后反馈的测量报告 的分析， 来获知移动终端的单天线干扰抑制消除的支持能力。 具体地， 基站子系统主动获知移动终端的单天线干扰抑制消除支持能力 可包括两个阶段： 第一阶段， 基站子系统确定待测试单天线干扰抑制消除支持能力的移动 终端； 也即基站子系统确定需要进行单天线干扰抑制消除支持能力获知的移 动终端。 具体地， 可以通过移动终端发送的测量报告中的体现移动终端干扰处理 能力的参数， 如接收信号质量参数和 /或接收信号强度参数来确定移动终端； 或者， 基站子系统也可以基于对上行的测量结果来确定被某些载频或小区服 务的某个或某些移动终端需要进行单天线干扰抑制消除支持能力获知；或者， 基站子系统也可以基于话务负荷来确定被某些载频或小区服务的某个或某些 移动终端需要进行单天线干扰抑制消除支持能力获知。 也可以设置默认的待测试单天线干扰抑制消除支持能力的移动终端， 比 如， 指定的某个或某些移动终端固定需要进行单天线干扰抑制消除支持能力 获知， 或者， 每个终端均需要进行单天线干扰抑制消除支持能力获知， 则可 省略本阶段的基站子系统确定待测试单天线干扰抑制消除支持能力的移动终 端的步骤。 第二阶段， 基站子系统对待测试单天线干扰抑制消除支持能力的移动终 端的 SID帧施加一轮或多轮同频干扰， 分析施加同频干扰期间所述移动终端 上报的测量报告中的接收信号参数， 判断所述移动终端是否具有单天线干扰 抑制消除支持能力； 或者， 基站子系统对待测试单天线干扰抑制消除支持能 力的移动终端的 SID帧和其它特定类型的下行帧施加一轮或多轮同频干扰， 分析施加同频干扰期间所述移动终端上报的测量报告中的接收信号参数， 判 断所述移动终端是否具有单天线干扰抑制消除支持能力。 其中， 该其它特定类型的下行帧包括 TCH (语音信道）帧和 /或 SACCH (慢速随路控制信道）帧， 即： 可以是仅对 SID帧施加同频干扰， 或对 TCH 帧和 SID帧施加联合同频干扰， 或对 TCH和 SID帧和 SACCH帧施加联合 同频干扰。 上述接收信号参数可以包括全集接收信号质量参数和子集接收信号质量 参数； 也可以包括全集接收信号质量参数、 全集接收信号强度参数、 子集接 收信号质量参数和子集接收信号强度参数等相关参数； 第二阶段中， 施加一轮或多轮同频干扰的方式可以是： 对 SID帧或 SID 帧和其它特定类型的下行帧的组合先施加一轮同频干扰， 施加的同频干扰的 功率强度和持续时间可以根据基站子系统的策略来设置， 然后分析施加同频 干扰期间移动终端上报的一个或多个测量报告中的全集接收信号质量， 全集 接收信号强度等相关参数， 比如， 这些参数是否优于设定的门限阔值， 基站 子系统基于分析结果决定是否继续施加同频干扰。 也需要分析施加同频干扰 期间移动终端上报的一个或多个测量报告中的子集接收信号质量， 子集接收 信号强度等相关参数， 比如， 这些参数是否优于设定的门限阔值， 基站子系 统基于分析结果决定是否继续施加同频干扰。 适用于全集接收信号质量， 全 集接收信号强度的门限阔值独立于适用于子集接收信号质量， 子集接收信号 强度的门限阔值。 如基站基于分析结果判定继续施加另外一轮， 同样的， 施 加该同频干扰的功率强度和持续时间可以根据基站子系统的策略来设置， 可 以等同于之前一轮的相应设置， 也可以不同于此。 然后， 基站子系统分析施 加该轮同频干扰期间移动终端上报的一个或多个测量报告中的全集接收信号 质量， 全集接收信号强度， 子集接收信号质量， 子集接收信号强度等相关参 数， 比如， 这些参数是否优于设定的门限阔值， 该门限阔值可以等同于之前 一轮的相应设置， 也可以不同于此。 基站子系统基于分析结果决定是否继续 施加同频干扰。 以此类推， 直到基站子系统认为已经能得出移动终端的单天 线干扰抑制消除能力的情况， 则完成在非连续发射中基站子系统主动地获知 移动终端的单天线干扰抑制消除能力的过程。
第二阶段中， 基站子系统可以通过分析施加了同频干扰后的移动终端上 报的测量报告中的全集接收信号质量， 全集接收信号强度， 子集接收信号质 量， 子集接收信号强度等相关参数， 结合基站子系统预先设置的各种相关门 限阔值来判决移动终端的单天线干扰抑制消除能力。 具体的移动终端的单天 线干扰抑制消除能力的判决的特定数值， 如施加几轮同频干扰， 施加的同频 干扰的功率强度和持续时间， 用于判断的设定的门限阔值等， 可根据基站子 系统的策略来实现。 比如， 当基站子系统仅通过施加一轮同频干扰即判断出 所述移动终端是否具有单天线干扰抑制消除支持能力时， 当施加同频干扰得 到的分析结果优于预先设定的门限阔值时， 则该基站子系统判断移动终端具 有单天线干扰抑制消除支持能力； 当基站子系统通过施加多轮同频干扰判断 所述移动终端是否具有单天线干扰抑制消除支持能力时， 可釆用多种实现方 式， 例如釆取最大可能方式， 只要其中一轮施加同频干扰得到的分析结果优 于预先设定的门限阔值，即判断移动终端具有单天线干扰抑制消除支持能力； 或者， 釆用最强限定原则方式， 即每一轮施加同频干扰得到的分析结果均优 于预先设定的门限阔值，才判断移动终端具有单天线干扰抑制消除支持能力。
第二阶段中， 基站子系统施加的同频干扰的调制方式可以是多样的， 比 如该同频干扰是一个与被测信号相位相同的干扰信号， 同频干扰信号与被测 信号分别进行 GMSK ( Gaussian-Filtered Minimum Shift Keying, 高斯滤波最 小移频键控）调制后， 再将两个调制后的信号进行矢量相加合成一个下行信 号发送给移动终端； 或是一个与被测信号相位相差 pie/2 (即 π/2 ) 的干扰信 号， 同频干扰信号与被测信号分别进行 GMSK调制后， 再将两个调制后的信 号进行矢量相加合成一个下行信号发送给移动终端； 或是可以体现为釆用与 被测信号组成的一个自适应 QPSK ( Quadrature Phase Shift Keying, 正交相移 键控 )调制信号 , 同频干扰信号与被测信号直接进行自适应 QPSK调制后 , 再将调制后的下行信号发送给移动终端。 自适应 QPSK调制可以釆用已有文 献中的现有技术， 如 3GPP TS 45.004所提供的方法。 同频干扰信号与被测信 号釆用不同的训练序列。 上述方法具体实现时，可以是由基站子系统中的 BTS单独完成主动获知 移动终端的单天线干扰抑制消除支持能力的过程， 也可以是 BSC和 BTS共 同完成主动获知移动终端的单天线干扰抑制消除支持能力的过程。 比如， 可 以由 BTS确定需要进行单天线干扰抑制消除支持能力获知的移动终端，也可 以由 BSC确定需要进行单天线干扰抑制消除支持能力获知的移动终端，再告 知 BTS; 对所述待测试单天线干扰抑制消除支持能力的移动终端的特定类型 的下行帧施加一轮或多轮同频干扰可以由 BTS完成，分析施加同频干扰期间 所述移动终端上报的测量报告中的接收信号参数， 判断所述移动终端是否具 有单天线干扰抑制消除支持能力可以由 BTS或 BSC完成， 也可以由 BTS和 BSC共同完成， 本发明不对此进行具体限制。
以下结合附图和具体实施例对本发明进行详细描述。 实施例一 如图 2所示， 移动终端处于专用模式下， 在非连续发射时， 基站子系统 通过对 SID帧施加同频干扰的方式主动获知移动终端的单天线干扰抑制消除 能力的步骤包括： 步骤 201 , 基站子系统通过移动终端发送的测量报告中的体现移动终端 干扰处理能力的相关参数， 如全集接收信号质量， 来确定需要进行单天线干 扰抑制消除支持能力获知的移动终端。 基站子系统可以用多种方式， 比如可以通过移动终端发送的测量报告中 的体现移动终端干扰处理能力的相关参数， 如全集接收信号质量， 全集接收 信号强度来确定移动终端； 或基站子系统基于对上行的测量结果来确定被某 些载频或小区服务的某个或某些移动终端需要进行单天线干扰抑制消除支持 能力获知； 或基站子系统基于话务负荷来确定被某些载频或小区服务的某个 或某些移动终端需要进行单天线干扰抑制消除支持能力获知。 本实施列中釆 用的是通过移动终端发送的测量报告中的体现移动终端干扰处理能力的相关 参数， 如全集接收信号质量， 来确定需要进行单天线干扰抑制消除支持能力 获知的移动终端。 步骤 201为可选步骤， 需要进行单天线干扰抑制消除支持能力获知的移 动终端可以是默认的某个或某些移动终端。 步骤 202, 基站子系统给被确定需要进行单天线干扰抑制消除支持能力 获知的移动终端的下行 SID帧施加一个与被测信号进行自适应 QPSK调制的 同频干扰。 基站子系统施加的同频干扰的调制方式可以是多样的， 比如该同频干扰 是一个釆用 GMSK调制的与被测信号相位相同的干扰信号，或是一个与被测 信号相位相差 pie/2的 GMSK调制信号， 或是可以体现为釆用与被测信号组 成的一个自适应 QPSK调制信号。 同频干扰的功率可以是多样的， 比如同频 干扰与被测信号等功率， 或同频干扰比被测信号高 3dB等。 在本实施例中， 釆用的是对移动终端的下行 SID帧施加一个与被测信号进行自适应 QPSK调 制的同频干扰， 该同频干扰的功率高于被测信号功率 3dB。 步骤 203 , 基站子系统对于非连续发射期间的属于同一移动终端的 SID 帧都施加该同频干扰， 并且该同频干扰被持续施加到非连续发射结束前的部 分或所有 SID帧上。 具体来说， 对于全速率语音编码， 可以将非连续发射期间的帧号对 104 取余， （即帧号 mod 104 ) , 取余的结果等于 （ 52, 53 , 54, 55, 56, 57, 58, 59 )的这些帧即为 SID帧， 对这些 SID帧都施加该同频干扰， 并且该同 频干扰持续施加到非连续发射结束前的部分或所有 SID帧上； 对于半速率语 音编码来说， 将非连续发射期间的帧号对 104取余， （即帧号 mod 104 ) , 取余的结果等于 （0, 2, 4, 6, 52, 54, 56, 58 ) 的这些帧即为处于第一子 信道的移动终端的 SID帧， 对这些 SID帧都施加该同频干扰， 并且该同频干 扰持续施加到非连续发射结束前的部分或所有 SID帧上。 对于自适应多速率 语音编码， 由于其 SID帧的帧号无固定位置， 因此， 对于出现的 SID帧都施 加该同频干扰， 并且该同频干扰持续施加到非连续发射结束前的部分或所有 SID帧上； 在本实施例中， 釆用的是对移动终端的非连续发射结束前的所有 SID帧都施加该同频干扰。 如图 4所示， 为对于全速率语音编码， 基站子系 统对 SID帧施加干扰的示意图， 以及如图 5所示， 为对于半速率语音编码， 基站子系统对 SID帧施加干扰的示意图， 以及如图 6所示， 为对于自适应多 速率语音编码， 基站子系统对 SID帧施加干扰的示意图。 步骤 204, 获取施加同频干扰期间移动终端上报的一个或多个测量报告 中的全集接收信号质量， 全集接收信号强度， 子集接收信号质量， 子集接收 信号强度等相关参数。 根据基站子系统的具体应用环境和实现特性有多种实现方法， 如方法一 是通过对 N个连续最近的测量报告中的全集接收信号质量和子集接收信号质 量参数值分别独立求均值； 方法二是通过对 N个连续最近的， 全集接收信号 质量小于特定设置的门限阔值 TO (比如小于 2 )的测量报告中的全集接收信 号质量参数值求标准差； 对 N个连续最近的， 子集接收信号质量小于特定设 置的门限阔值 T1 (比如小于 3 )的测量报告中的子集接收信号质量参数值求 标准差； 方法三是结合下行测量报告中的全集接收信号质量， 全集接收信号 强度一起进行获取， 比如只对含有全集接收信号强度小于某个门限阔值 T2 的测量报告中的全集接收信号质量参数值求均值； 只对含有子集接收信号强 度小于某个门限阔值 T3 的测量报告中的子集接收信号质量参数值求均值。 方法四是结合下行测量报告中的全集接收信号质量， 全集接收信号强度， 子 集接收信号质量， 子集接收信号强度一起进行获取， 比如只对含有全集接收 信号强度小于某个门限阔值 T4 的测量报告中的全集接收信号质量参数值求 标准差， 只对含有子集接收信号强度小于某个门限阔值 T5 的测量报告中的 子集接收信号质量参数值求标准差。对于全集接收信号质量 /全集接收信号强 度， 子集接收信号质量 /子集接收信号强度等两类参数值， 分别独立计算。 在 本实施例中， 釆用的方法二， 即通过对 N ( N=2 )个连续最近的， 全集接收 信号质量小于特定设置的门限阔值 TO (比如小于 2 )的测量报告中的全集接 收信号质量参数值求标准差， 对 N ( N=3 )个连续最近的， 子集接收信号质 量小于特定设置的门限阔值 T1 (比如小于 3 )的测量报告中的子集接收信号 质量参数值求标准差。 步骤 205, 基站子系统基于步骤 204的获取结果， 基于全集接收信号质 量 /全集接收信号强度， 子集接收信号质量 /子集接收信号强度等两类参数值 , 分别独立与预先设定的门限阔值进行比较， 若步骤 204的获取结果优于预先 设定的门限阔值， 则认为该终端的干扰抑制能力强， 可能是支持单天线干扰 抑制消除的移动终端 ,否则就认为不是支持单天线干扰抑制消除的移动终端。 具体来说， 可以釆用如： 方法一， 若 N个连续最近的测量报告中的全集 接收信号质量参数值的均值小于特定设置的门限阔值 RQAVG11 (比如小于 3 ) , 且 N个连续最近的测量报告中的子集接收信号质量参数值的均值小于 特定设置的门限阔值 RQAVG12 (比如小于 2 ) , 就认为该终端的干扰抑制 能力强， 可能是支持单天线干扰抑制消除的移动终端； 方法二， 若 N个连续 最近的， 全集接收信号质量小于特定设置的门限阔值 TO (比如小于 3 )的测 量报告中的全集接收信号质量参数值的标准差小于特定设置的门限阔值 RQCVl l (比如小于 0.05 ) , 且 N个连续最近的， 子集接收信号质量小于特 定设置的门限阔值 T1 (比如小于 2 )的测量报告中的子集接收信号质量参数 值的标准差小于特定设置的门限阔值 RQCV12 (比如小于 0.05 )就认为该终 端的干扰抑制能力强， 可能是支持单天线干扰抑制消除的移动终端； 或者， 方法三， 如全集接收信号强度小于某个门限阔值 T2 (比如小于 -65dBm ) 的 测量报告中的全集接收信号质量参数值均值小于门限阔值 RQAVG21 (比如 小于 3 ) ， 且子集接收信号强度小于某个门限阔值 T3 (比如小于 -65dBm )的 测量报告中的子集接收信号质量参数值均值小于门限阔值 RQAVG22 (比如 小于 2 ) , 就认为该终端的干扰抑制能力强， 可能是支持单天线干扰抑制消 除的移动终端。 或者， 方法四， 如全集接收信号强度小于某个门限阔值 T4 (比如小于 -65dBm )的测量报告中的全集接收信号质量参数值标准差小于门 限阔值 RQCV21 (比如小于 0.05 ) ， 且子集接收信号强度小于某个门限阔值 T5 (比如小于 -65dBm )的测量报告中的子集接收信号质量参数值标准差小于 门限阔值 RQCV22 (比如小于 0.05 ) , 就认为该终端的干扰抑制能力强， 可 能是支持单天线干扰抑制消除的移动终端。 步骤 206, 对于可能是支持单天线干扰抑制消除的移动终端这样的判断 结果， 基站子系统可以有多种处理方式， 比如方法一， 认为该主动获知移动 终端能力的过程结束， 执行步骤 207; 或者， 方法二， 基站子系统基于结果 决定继续施加另外一轮同频干扰， 即返回执行步骤 202, 同样的， 施加该同 频干扰的功率强度和持续时间可以根据基站子系统的策略来设置， 可以等同 于之前一轮的相应设置， 也可以不同于此。 然后， 基站子系统分析施加该轮 同频干扰期间移动终端上报的一个或多个测量报告中的接收信号质量， 接收 信号强度等相关参数， 比如， 这些参数是否优于一个设定的门限阔值， 该门 限阔值可以等同于之前一轮的相应设置， 也可以不同于此。 以此类推， 直到 基站子系统认为该主动获知移动终端能力的过程结束， 执行步骤 207。 对施加多轮同频干扰后的多次判断结果的处理， 根据基站子系统可根据 具体应用环境和实现特性有多种实现方式。 比如： 釆取最大可能方式， 每一 轮施加同频干扰后的判断结果中， 只要有至少一次的结果是认为该移动终端 具有单天线干扰抑制消除能力， 就认为该移动终端具有单天线干扰抑制消除 能力； 或是釆用最强限定原则方式， 每一轮施加同频干扰后的判断结果中， 只有每次的判断结果都认为该移动终端具有单天线干扰抑制消除能力， 才认 为该移动终端具有单天线干扰抑制消除能力。 对于不是支持单天线干扰抑制消除的移动终端这样的判断结果， 基站子 系统认为该主动获知移动终端能力的过程结束， 执行步骤 207。 步骤 207 , 基站子系统主动获知移动终端的单天线干扰抑制消除能力的 过程结束。
实施例二 如图 6所示， 移动终端处于专用模式下， 在非连续发射时， 基站子系统 通过对下行语音帧和 SID帧和 SACCH帧联合施加同频干扰的方式主动获知 移动终端的单天线干扰抑制消除能力的步骤包括： 步骤 301 , 基站子系统通过移动终端发送的测量报告中的体现移动终端 干扰处理能力的相关参数， 如全集接收信号质量， 来确定需要进行单天线干 扰抑制消除支持能力获知的移动终端。 基站子系统可以用多种方式， 比如可以通过移动终端发送的测量报告中 的体现移动终端干扰处理能力的相关参数， 如全集接收信号质量， 全集接收 信号强度来确定移动终端； 或基站子系统基于对上行的测量结果来确定被某 些载频或小区服务的某个或某些移动终端需要进行单天线干扰抑制消除支持 能力获知； 或基站子系统基于话务负荷来确定被某些载频或小区服务的某个 或某些移动终端需要进行单天线干扰抑制消除支持能力获知。 本实施列中釆 用的是通过移动终端发送的测量报告中的体现移动终端干扰处理能力的相关 参数， 如全集接收信号质量， 来确定需要进行单天线干扰抑制消除支持能力 获知的移动终端。 步骤 301为可选步骤， 需要进行单天线干扰抑制消除支持能力获知的移 动终端可以是默认的某个或某些移动终端。 步骤 302, 由于非连续发射过程的结束在时间上有不确定性， 26复帧周 期中存在着如下的情况： 其中的部分帧为非连续发射期间的帧 （包括 SID帧 和 SACCH ) , 部分帧为非连续发射结束后的语音帧 （即 TCH帧） 。 对于这 种情况， 基站子系统给被确定需要进行单天线干扰抑制消除支持能力获知的 移动终端的下行语音帧和 SID帧和 SACCH帧联合施加与被测信号进行自适 应 QPSK调制的同频干扰。 基站子系统施加的同频干扰的调制方式可以是多 样的，比如该同频干扰是一个釆用 GMSK调制的与被测信号相位相同的干扰 信号， 或是一个与被测信号相位相差 pie/2的 GMSK调制信号， 或是可以体 现为釆用与被测信号组成的一个自适应 QPSK调制信号。 同频干扰的功率可 以是多样的，比如同频干扰与被测信号等功率，或同频干扰比被测信号高 3dB 等。 在本实施例中， 釆用的是对移动终端的下行语音帧和 SID帧和 SACCH 帧联合施加与被测信号进行自适应 QPSK调制的同频干扰， 该同频干扰的功 率高于被测信号功率 3dB。 步骤 303 , 基站子系统对于非连续发射期间的属于同一移动终端的下行 语音帧和 SID帧和 SACCH帧联合施加该同频干扰，并且对 SID帧和 SACCH 的同频干扰被持续施加到非连续发射结束前的部分或所有 SID和 SACCH帧 上，对语音帧的同频干扰被持续施加到非连续发射结束后的第一个 26复帧结 束。 具体来说，对于全速率语音编码，将非连续发射期间的帧号对 104取余， (即帧号 mod 104 ) , 取余的结果等于（ 52, 53 , 54, 55 , 56, 57 , 58, 59 ) 的这些帧即为 SID帧， 对这些 SID帧都施加该同频干扰， 并且该同频干扰持 续施加到非连续发射结束前的部分或所有 SID帧上； 对 SACCH帧的同频干 扰施加在 SACCH帧的位置。 对语音帧的同频干扰被持续施加到非连续发射 结束后的第一个 26复帧结束。 对于半速率语音编码来说， 将非连续发射期 间的帧号对 104取余， （即帧号 mod 104 ) , 取余的结果等于（0, 2, 4, 6, 52, 54, 56, 58 ) 的这些帧即为处于第一子信道的移动终端的 SID帧， 对这 些 SID帧都施加该同频干扰， 并且该同频干扰持续施加到非连续发射结束前 的部分或所有 SID帧上，对 SACCH帧的同频干扰施加在 SACCH帧的位置。 对语音帧的同频干扰被持续施加到非连续发射结束后的第一个 26复帧结束。 对于自适应多速率语音编码， 由于其 SID帧的帧号无固定位置， 因此， 对于 出现的 SID帧都施加该同频干扰， 并且该同频干扰持续施加到非连续发射结 束前的部分或所有 SID帧上； 对 SACCH帧的同频干扰施加在 SACCH帧的 位置。对语音帧的同频干扰被持续施加到非连续发射结束后的第一个 26复帧 结束。 在本实施例中， 釆用的是对移动终端的非连续发射结束前的所有 SID 帧都施加该同频干扰， 对 SACCH帧的同频干扰施加在所有 SACCH帧的位 置 ,对语音帧的同频干扰被持续施加到非连续发射结束后的第一个 26复帧的 所有语音帧上。 如图 7所示， 为对于全速率语音编码， 基站子系统施加干扰 的示意图， 以及如图 8所示， 为对于半速率语音编码， 基站子系统施加干扰 的示意图， 以及如图 9所示， 为对于自适应多速率语音编码， 基站子系统施 加干扰的示意图。 步骤 304, 获取施加同频干扰期间移动终端上报的一个或多个测量报告 中的全集接收信号质量， 全集接收信号强度， 子集接收信号质量， 子集接收 信号强度等相关参数。 根据基站子系统的具体应用环境和实现特性有多种实现方法， 如方法一 是通过对 N个连续最近的测量报告中的全集接收信号质量和子集接收信号质 量参数值分别独立求均值； 方法二是通过对 N个连续最近的， 全集接收信号 质量小于特定设置的门限阔值 T6 (比如小于 2 )的测量报告中的全集接收信 号质量参数值求标准差； 对 N个连续最近的， 子集接收信号质量小于特定设 置的门限阔值 T7 (比如小于 3 )的测量报告中的子集接收信号质量参数值求 标准差； 方法三是结合下行测量报告中的全集接收信号质量， 全集接收信号 强度一起进行获取， 比如只对含有全集接收信号强度小于某个门限阔值 T8 的测量报告中的全集接收信号质量参数值求均值； 只对含有子集接收信号强 度小于某个门限阔值 T9 的测量报告中的子集接收信号质量参数值求均值。 方法四是结合下行测量报告中的全集接收信号质量， 全集接收信号强度， 子 集接收信号质量， 子集接收信号强度一起进行获取， 比如只对含有全集接收 信号强度小于某个门限阔值 T10的测量报告中的全集接收信号质量参数值求 标准差， 只对含有子集接收信号强度小于某个门限阔值 Ti l的测量报告中的 子集接收信号质量参数值求标准差。对于全集接收信号质量 /全集接收信号强 度， 子集接收信号质量 /子集接收信号强度等两类参数值， 分别独立计算。 在 本实施例中， 釆用的方法二， 即通过对 N ( N=2 )个连续最近的， 全集接收 信号质量小于特定设置的门限阔值 T6 (比如小于 2 )的测量报告中的全集接 收信号质量参数值求标准差， 对 N ( N=3 )个连续最近的， 子集接收信号质 量小于特定设置的门限阔值 T7 (比如小于 3 )的测量报告中的子集接收信号 质量参数值求标准差； 步骤 305, 基站子系统基于步骤 304的获取结果， 基于全集接收信号质 量 /全集接收信号强度， 子集接收信号质量 /子集接收信号强度等两类参数值， 分别独立与预先设定的门限阔值进行比较， 若步骤 304的获取结果优于预先 设定的门限阔值， 则认为该终端的干扰抑制能力强， 可能是支持单天线干扰 抑制消除的移动终端 ,否则就认为不是支持单天线干扰抑制消除的移动终端。 具体来说， 可以釆用如： 方法一， 若 N个连续最近的测量报告中的全集 接收信号质量参数值的均值小于特定设置的门限阔值 RQAVG31 (比如小于 3 ) , 且 N个连续最近的测量报告中的子集接收信号质量参数值的均值小于 特定设置的门限阔值 RQAVG32 (比如小于 2 ) , 就认为该终端的干扰抑制 能力强， 可能是支持单天线干扰抑制消除的移动终端； 方法二， 若 N个连续 最近的， 全集接收信号质量小于特定设置的门限阔值 TO (比如小于 3 )的测 量报告中的全集接收信号质量参数值的标准差小于特定设置的门限阔值 RQCV31 (比如小于 0.05 ) , 且 N个连续最近的， 子集接收信号质量小于特 定设置的门限阔值 T1 (比如小于 2 )的测量报告中的子集接收信号质量参数 值的标准差小于特定设置的门限阔值 RQCV32 (比如小于 0.05 )就认为该终 端的干扰抑制能力强， 可能是支持单天线干扰抑制消除的移动终端； 或者， 方法三， 如全集接收信号强度小于某个门限阔值 T2 (比如小于 -65dBm ) 的 测量报告中的全集接收信号质量参数值均值小于门限阔值 RQAVG41 (比如 小于 3 ) ， 且子集接收信号强度小于某个门限阔值 T3 (比如小于 -65dBm )的 测量报告中的子集接收信号质量参数值均值小于门限阔值 RQAVG42 (比如 小于 2 ) , 就认为该终端的干扰抑制能力强， 可能是支持单天线干扰抑制消 除的移动终端。 或者， 方法四， 如全集接收信号强度小于某个门限阔值 T4 (比如小于 -65dBm )的测量报告中的全集接收信号质量参数值标准差小于门 限阔值 RQCV41 (比如小于 0.05 ) ， 且子集接收信号强度小于某个门限阔值 T5 (比如小于 -65dBm )的测量报告中的子集接收信号质量参数值标准差小于 门限阔值 RQCV42 (比如小于 0.05 ) , 就认为该终端的干扰抑制能力强， 可 能是支持单天线干扰抑制消除的移动终端。 步骤 306 , 对于可能是支持单天线干扰抑制消除的移动终端这样的判断 结果， 基站子系统可以有多种处理方式， 比如方法一， 认为该主动获知移动 终端能力的过程结束， 执行步骤 307; 或者， 方法二， 基站子系统基于结果 决定继续施加另外一轮同频干扰， 返回执行步骤 302, 同样的， 施加该同频 干扰的功率强度和持续时间可以根据基站子系统的策略来设置， 可以等同于 之前一轮的相应设置， 也可以不同于此。 然后， 基站子系统分析施加该轮同 频干扰期间移动终端上报的一个或多个测量报告中的接收信号质量， 接收信 号强度等相关参数， 比如， 这些参数是否优于一个设定的门限阔值， 该门限 阔值可以等同于之前一轮的相应设置， 也可以不同于此。 以此类推， 直到基 站子系统认为该主动获知移动终端能力的过程结束， 执行步骤 307。 对施加多轮同频干扰后的多次判断结果的处理， 根据基站子系统可根据 具体应用环境和实现特性有多种实现方式。 比如： 釆取最大可能方式， 每一 轮施加同频干扰后的判断结果中， 只要有至少一次的结果是认为该移动终端 具有单天线干扰抑制消除能力， 就认为该移动终端具有单天线干扰抑制消除 能力； 或是釆用最强限定原则方式， 每一轮施加同频干扰后的判断结果中， 只有每次的判断结果都认为该移动终端具有单天线干扰抑制消除能力， 才认 为该移动终端具有单天线干扰抑制消除能力。 对于不是支持单天线干扰抑制消除的移动终端这样的判断结果， 基站子 系统认为该主动获知移动终端能力的过程结束， 执行步骤 307。 步骤 307 , 基站子系统主动获知移动终端的单天线干扰抑制消除能力的 过程结束。 如图 10所示，为本发明实施例的获知移动终端能力的装置，可应用于基 站子系统， 包括测试目标确定单元 101和能力获知单元 102, 其中： 所述测试目标确定单元 101设置成： 确定待测试单天线干扰抑制消除支 持能力的移动终端， 并告知所述能力获知单元 102; 所述能力获知单元 102设置成： 对待测试单天线干扰抑制消除支持能力 的移动终端的 SID帧施加一轮或多轮同频干扰， 或者对待测试单天线干扰抑 制消除支持能力的移动终端的 SID帧和其它特定类型的下行帧施加一轮或多 轮同频干扰， 分析施加同频干扰期间所述移动终端上报的测量报告中的接收 信号参数， 判断所述移动终端是否具有单天线干扰抑制消除支持能力。 测试目标确定单元 101为可选模块， 能力获知单元 102中可设置默认的 某个或某些终端为待测试单天线干扰抑制消除支持能力的移动终端。 优选地， 所述测试目标确定单元 101是设置成： 才艮据如下信息中的一种 或多种确定待测试单天线干扰抑制消除支持能力的移动终端， 并告知所述能 力获知单元： （ 1 )移动终端发送的测量报告中体现移动终端干扰处理能力的 参数； （2 )对上行的测量结果； （3 )话务负荷。 所述其它特定类型的下行帧包括语音信道（TCH )帧和 /或慢速随路控制 信道（SACCH ) 帧。 优选地， 所述能力获知单元 102是设置成： 将同频干扰信号与被测信号 分别进行高斯滤波最小移频键控（GMSK )调制后， 再将调制后的同频干扰 信号与被测信号进行矢量相加合成一个下行信号发送给所述移动终端， 所述 同频干扰信号是与被测信号相位相同的干扰信号， 或者是与被测信号相位相 差 π/2的干扰信号； 或者， 将同频干扰信号与被测信号直接进行自适应正交 相移键控 ( QPSK )调制后， 将调制后的下行信号发送给所述移动终端。 优选地， 所述能力获知单元 102是设置成： 对所述待测试单天线干扰抑 制消除支持能力的移动终端的 SID帧施加一轮同频干扰， 分析施加同频干扰 期间所述移动终端上报的测量报告中的接收信号参数， 并基于分析结果确定 是否继续施加同频干扰，若确定继续施加同频干扰，则对所述移动终端的 SID 帧继续施加同频干扰， 直到判断出所述移动终端是否具有单天线干扰抑制消 除支持能力； 或者， 对所述待测试单天线干扰抑制消除支持能力的移动终端 的 SID帧和其它特定类型的下行帧施加一轮同频干扰， 分析施加同频干扰期 间所述移动终端上报的测量报告中的接收信号参数， 并基于分析结果确定是 否继续施加同频干扰， 若确定继续施加同频干扰， 则对所述移动终端的 SID 帧和其它特定类型的下行帧继续施加同频干扰， 直到判断出所述移动终端是 否具有单天线干扰抑制消除支持能力。 优选地， 所述能力获知单元 102是设置成： 施加一轮同频干扰后， 当施 加同频干扰得到的分析结果优于预先设定的门限阔值， 则判断所述移动终端 具有单天线干扰抑制消除支持能力； 或者， 施加多轮同频干扰后， 若至少其 中一轮施加同频干扰得到的分析结果优于预先设定的门限阔值， 则判断所述 移动终端具有单天线干扰抑制消除支持能力； 或者， 施加多轮同频干扰后， 若每一轮施加同频干扰得到的分析结果均优于预先设定的门限阔值， 则判断 所述移动终端具有单天线干扰抑制消除支持能力。 优选地， 所述接收信号参数包括全集接收信号质量参数和子集接收信号 质量参数； 或者， 所述接收信号参数包括全集接收信号质量参数、 全集接收 信号强度参数、 子集接收信号质量参数和子集接收信号强度参数； 所述能力获知单元 102是设置成： 在分析施加同频干扰期间所述移动终 端上报的测量报告中的接收信号参数时：对 N个连续最近的测量报告中的全 集接收信号质量参数值求均值，判断得到的结果是否小于第一结果门限阔值， 以及， N个连续最近的测量报告中的子集接收信号质量参数值求均值， 判断 得到的结果是否小于第二结果门限阔值； 或者， 对 N个连续最近的、 全集接 收信号质量参数值小于第一条件门限阔值的测量报告中的接收信号质量参数 值求标准差， 判断得到的结果是否小于第三结果门限阔值， 以及， 对 N个连 续最近的、 子集接收信号质量参数值小于第二条件门限阔值的测量报告中的 接收信号质量参数值求标准差，判断得到的结果是否小于第四结果门限阔值； 或者， 对含有全集接收信号强度参数值小于第三条件门限阔值的测量报告中 的全集接收信号质量参数值求均值， 判断得到的结果是否小于第五结果门限 阔值， 以及， 对含有子集接收信号强度参数值小于第四条件门限阔值的测量 报告中的子集接收信号质量参数值求均值， 判断得到的结果是否小于第六结 果门限阔值； 或者， 对含有全集接收信号强度参数值小于第五条件门限阔值 的测量报告中的全集接收信号质量参数值求标准差， 判断得到的结果是否小 于第七结果门限阔值， 以及， 对含有子集接收信号强度参数值小于第六条件 门限阔值的测量报告中的子集接收信号质量参数值求标准差， 判断得到的结 果是否小于第八结果门限阔值； 其中， N为整数。 上述获知移动终端能力的装置可均位于 BTS 中， 也可以部分位于 BTS 中， 部分位于 BSC中 （比如测试目标确定单元 101位于 BSC中， 能力获知 单元 102位于 BTS中； 或者测试目标确定单元 101位于 BSC中， 能力获知 单元 102中的一部分位于 BTS中， 一部分位于 BSC中） ， 具体可有多种实 现方式， 本发明不对此做具体限定。
本领域普通技术人员可以理解上述方法中的全部或部分步骤可通过程序 来指令相关硬件完成， 所述程序可以存储于计算机可读存储介质中， 如只读 存储器、 磁盘或光盘等。 可选地， 上述实施例的全部或部分步骤也可以使用 一个或多个集成电路来实现。 相应地， 上述实施例中的各模块 /单元可以釆用 硬件的形式实现， 也可以釆用软件功能模块的形式实现。 本发明不限制于任 何特定形式的硬件和软件的结合。 尽管本发明结合特定实施例进行了描述， 但是对于本领域的技术人员来 说， 可以在不背离本发明的精神或范围的情况下进行修改和变化。 这样的修 改和变化被视作在本发明的范围和附加的权利要求书范围之内。
工业实用性 本发明提供一种基站子系统获知移动终端的能力的方法和装置， 能够在 非连续发射时， 在移动终端不上 ^艮单天线干扰抑制消除支持能力的情况下， 主动地检测出其单天线干扰抑制消除的支持能力， 从而可以有效地使用单天 线干扰抑制消除技术， 能够使 GSM 网络在干扰受限的环境中， 依然得到很 好的整体网络性能。

Claims

权 利 要 求 书
1、 一种基站子系统获知移动终端能力的方法， 包括： 基站子系统对待测试单天线干扰抑制消除支持能力的移动终端的静音插 入描述（ SID ) 帧施加一轮或多轮同频干扰， 分析施加同频干扰期间所述移 动终端上报的测量报告中的接收信号参数， 判断所述移动终端是否具有单天 线干扰抑制消除支持能力； 或者， 基站子系统对待测试单天线干扰抑制消除支持能力的移动终端的 SID帧 和其它特定类型的下行帧施加一轮或多轮同频干扰， 分析施加同频干扰期间 所述移动终端上报的测量报告中的接收信号参数， 判断所述移动终端是否具 有单天线干扰抑制消除支持能力。
2、 如权利要求 1所述的方法， 其中： 在施加一轮或多轮同频干扰之前， 所述方法还包括： 所述基站子系统确定所述待测试单天线干扰抑制消除支持能力的移动终 端； 其中， 所述基站子系统根据如下信息中的一种或多种确定所述待测试单 天线干扰抑制消除支持能力的移动终端：
( 1 )移动终端发送的测量报告中体现移动终端干扰处理能力的参数；
( 2 )对上行的测量结果；
( 3 )话务负荷。
3、 如权利要求 1所述的方法， 其中： 所述其它特定类型的下行帧包括语音信道（TCH )帧和 /或慢速随路控制 信道（SACCH ) 帧。
4、 如权利要求 1所述的方法， 其中: 在施加一轮或多轮同频干扰的步骤中， 所述基站子系统将同频干扰信号与被测信号分别进行高斯滤波最小移频 键控 ( GMSK )调制后， 再将调制后的同频干扰信号与被测信号进行矢量相 加合成一个下行信号发送给所述移动终端； 所述同频干扰信号是与被测信号 相位相同的干扰信号， 或者是与被测信号相位相差 π/2的干扰信号； 或者， 所述基站子系统将同频干扰信号与被测信号直接进行自适应正交相移键 控（QPSK )调制后， 将调制后的下行信号发送给所述移动终端。
5、 如权利要求 1所述的方法， 其中： 所述基站子系统对待测试单天线干扰抑制消除支持能力的移动终端的 SID帧施加一轮或多轮同频干扰， 分析施加同频干扰期间所述移动终端上报 的测量报告中的接收信号参数， 判断所述移动终端是否具有单天线干扰抑制 消除支持能力的步骤包括： 所述基站子系统对所述待测试单天线干扰抑制消 除支持能力的移动终端的 SID帧施加一轮同频干扰， 分析施加同频干扰期间 所述移动终端上报的测量报告中的接收信号参数， 并基于分析结果确定是否 继续施加同频干 ·ί尤， 若确定继续施加同频干 ·ί尤， 则对所述移动终端的 SID帧 继续施加同频干扰， 直到判断出所述移动终端是否具有单天线干扰抑制消除 支持能力； 所述基站子系统对待测试单天线干扰抑制消除支持能力的移动终端的 SID帧和其它特定类型的下行帧施加一轮或多轮同频干扰， 分析施加同频干 扰期间所述移动终端上报的测量报告中的接收信号参数， 判断所述移动终端 是否具有单天线干扰抑制消除支持能力的步骤包括： 所述基站子系统对所述 待测试单天线干扰抑制消除支持能力的移动终端的 SID帧和其它特定类型的 下行帧施加一轮同频干扰， 分析施加同频干扰期间所述移动终端上报的测量 报告中的接收信号参数， 并基于分析结果确定是否继续施加同频干扰， 若确 定继续施加同频干扰， 则对所述移动终端的 SID帧和其它特定类型的下行帧 继续施加同频干扰， 直到判断出所述移动终端是否具有单天线干扰抑制消除 支持能力。
6、 如权利要求 1 ~ 5中任意一项所述的方法， 其中： 在所述基站子系统施加一轮同频干扰， 分析施加同频干扰期间所述移动 终端上报的测量报告中的接收信号参数， 判断所述移动终端是否具有单天线 干扰抑制消除支持能力的步骤中， 当施加同频干扰得到的分析结果优于预先设定的门限阔值， 则所述基站 子系统判断所述移动终端具有单天线干扰抑制消除支持能力。
7、 如权利要求 1 ~ 5中任意一项所述的方法， 其中： 在所述基站子系统施加多轮同频干扰， 分析施加同频干扰期间所述移动 终端上报的测量报告中的接收信号参数， 判断所述移动终端是否具有单天线 干扰抑制消除支持能力的步骤中， 若其中一轮施加同频干扰得到的分析结果优于预先设定的门限阔值， 则 所述基站子系统判断所述移动终端具有单天线干扰抑制消除支持能力；或者 , 若每一轮施加同频干扰得到的分析结果均优于预先设定的门限阔值， 则 所述基站子系统判断所述移动终端具有单天线干扰抑制消除支持能力。
8、 如权利要求 1 ~ 5中任意一项所述的方法， 其中： 所述接收信号参数包括全集接收信号质量参数和子集接收信号质量参 数； 或者， 所述接收信号参数包括全集接收信号质量参数、 全集接收信号强 度参数、 子集接收信号质量参数和子集接收信号强度参数； 所述分析施加同频干扰期间所述移动终端上报的测量报告中的接收信号 参数的步骤包括： 对 N个连续最近的测量报告中的全集接收信号质量参数值求均值，判断 得到的结果是否小于第一结果门限阔值， 以及， N个连续最近的测量报告中 的子集接收信号质量参数值求均值 , 判断得到的结果是否小于第二结果门限 阔值； 或者， 对 N个连续最近的、全集接收信号质量参数值小于第一条件门限阔值的 测量报告中的接收信号质量参数值求标准差 , 判断得到的结果是否小于第三 结果门限阔值， 以及， 对 N个连续最近的、 子集接收信号质量参数值小于第 二条件门限阔值的测量报告中的接收信号质量参数值求标准差， 判断得到的 结果是否小于第四结果门限阔值； 或者， 对含有全集接收信号强度参数值小于第三条件门限阔值的测量报告中的 全集接收信号质量参数值求均值， 判断得到的结果是否小于第五结果门限阔 值， 以及， 对含有子集接收信号强度参数值小于第四条件门限阔值的测量报 告中的子集接收信号质量参数值求均值， 判断得到的结果是否小于第六结果 门限阔值； 或者， 对含有全集接收信号强度参数值小于第五条件门限阔值的测量报告中的 全集接收信号质量参数值求标准差， 判断得到的结果是否小于第七结果门限 阔值， 以及， 对含有子集接收信号强度参数值小于第六条件门限阔值的测量 报告中的子集接收信号质量参数值求标准差， 判断得到的结果是否小于第八 结果门限阔值； 其中， N为整数。
9、 一种获知移动终端能力的装置， 包括能力获知单元， 其中： 所述能力获知单元设置成： 对待测试单天线干扰抑制消除支持能力的移 动终端的静音插入描述（SID ) 帧施加一轮或多轮同频干扰， 或者对待测试 单天线干扰抑制消除支持能力的移动终端的 SID帧和其它特定类型的下行帧 施加一轮或多轮同频干扰， 分析施加同频干扰期间所述移动终端上报的测量 报告中的接收信号参数， 判断所述移动终端是否具有单天线干扰抑制消除支 持能力。
10、 如权利要求 9所述的装置， 还包括测试目标确定单元， 其中： 所述测试目标确定单元设置成： 根据如下信息中的一种或多种确定待测 试单天线干扰抑制消除支持能力的移动终端，并告知所述能力获知单元： （ 1 ) 移动终端发送的测量报告中体现移动终端干扰处理能力的参数； ( 2 )对上行 的测量结果； （3 )话务负荷。
11、 如权利要求 9所述的装置， 其中： 所述其它特定类型的下行帧包括语音信道（TCH )帧和 /或慢速随路控制 信道（SACCH ) 帧。
12、 如权利要求 9所述的装置， 其中： 所述能力获知单元是设置成： 将同频干扰信号与被测信号分别进行高斯 滤波最小移频键控 ( GMSK )调制后， 再将调制后的同频干扰信号与被测信 号进行矢量相加合成一个下行信号发送给所述移动终端， 所述同频干扰信号 是与被测信号相位相同的干扰信号， 或者是与被测信号相位相差 π/2的干扰 信号； 或者， 将同频干扰信号与被测信号直接进行自适应正交相移键控 ( QPSK )调制后， 将调制后的下行信号发送给所述移动终端。
13、 如权利要求 9所述的装置， 其中： 所述能力获知单元是设置成： 对所述待测试单天线干扰抑制消除支持能 力的移动终端的 SID帧施加一轮同频干扰， 分析施加同频干扰期间所述移动 终端上报的测量报告中的接收信号参数， 并基于分析结果确定是否继续施加 同频干 ·ί尤， 若确定继续施加同频干 ·ί尤， 则对所述移动终端的 SID帧继续施加 同频干扰，直到判断出所述移动终端是否具有单天线干扰抑制消除支持能力； 或者， 对所述待测试单天线干扰抑制消除支持能力的移动终端的 SID帧和其 它特定类型的下行帧施加一轮同频干扰， 分析施加同频干扰期间所述移动终 端上报的测量报告中的接收信号参数， 并基于分析结果确定是否继续施加同 频干扰， 若确定继续施加同频干扰， 则对所述移动终端的 SID帧和其它特定 类型的下行帧继续施加同频干扰， 直到判断出所述移动终端是否具有单天线 干扰抑制消除支持能力。
14、 如权利要求 9 ~ 13中任意一项所述的装置， 其中： 所述能力获知单元是设置成： 施加一轮同频干扰后， 当施加同频干扰得 到的分析结果优于预先设定的门限阔值， 则判断所述移动终端具有单天线干 扰抑制消除支持能力； 或者， 施加多轮同频干扰后， 若其中一轮施加同频干 扰得到的分析结果优于预先设定的门限阔值， 则判断所述移动终端具有单天 线干扰抑制消除支持能力； 或者， 施加多轮同频干扰后， 若每一轮施加同频 干扰得到的分析结果均优于预先设定的门限阔值， 则判断所述移动终端具有 单天线干扰抑制消除支持能力。
15、 如权利要求 9 ~ 13中任意一项所述的装置， 其中： 所述接收信号参数包括全集接收信号质量参数和子集接收信号质量参 数； 或者， 所述接收信号参数包括全集接收信号质量参数、 全集接收信号强 度参数、 子集接收信号质量参数和子集接收信号强度参数； 所述能力获知单元是设置成： 在分析施加同频干扰期间所述移动终端上 报的测量报告中的接收信号参数时：对 N个连续最近的测量报告中的全集接 收信号质量参数值求均值， 判断得到的结果是否小于第一结果门限阔值， 以 及， N个连续最近的测量报告中的子集接收信号质量参数值求均值， 判断得 到的结果是否小于第二结果门限阔值； 或者， 对 N个连续最近的、 全集接收 信号质量参数值小于第一条件门限阔值的测量报告中的接收信号质量参数值 求标准差， 判断得到的结果是否小于第三结果门限阔值， 以及， 对 N个连续 最近的、 子集接收信号质量参数值小于第二条件门限阔值的测量报告中的接 收信号质量参数值求标准差， 判断得到的结果是否小于第四结果门限阔值； 或者， 对含有全集接收信号强度参数值小于第三条件门限阔值的测量报告中 的全集接收信号质量参数值求均值， 判断得到的结果是否小于第五结果门限 阔值， 以及， 对含有子集接收信号强度参数值小于第四条件门限阔值的测量 报告中的子集接收信号质量参数值求均值， 判断得到的结果是否小于第六结 果门限阔值； 或者， 对含有全集接收信号强度参数值小于第五条件门限阔值 的测量报告中的全集接收信号质量参数值求标准差， 判断得到的结果是否小 于第七结果门限阔值， 以及， 对含有子集接收信号强度参数值小于第六条件 门限阔值的测量报告中的子集接收信号质量参数值求标准差， 判断得到的结 果是否小于第八结果门限阔值； 其中， N为整数。
PCT/CN2010/076110 2010-08-18 2010-08-18 一种基站子系统获知移动终端能力的方法和装置 WO2012022037A1 (zh)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP10856035.0A EP2608583A4 (en) 2010-08-18 2010-08-18 METHOD AND DEVICE FOR CAPACITY GAINING OF A MOBILE TERMINAL BASED ON A BASE STATION SUBSYSTEM
PCT/CN2010/076110 WO2012022037A1 (zh) 2010-08-18 2010-08-18 一种基站子系统获知移动终端能力的方法和装置
CN201080067977.5A CN102986260B (zh) 2010-08-18 2010-08-18 一种基站子系统获知移动终端能力的方法和装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2010/076110 WO2012022037A1 (zh) 2010-08-18 2010-08-18 一种基站子系统获知移动终端能力的方法和装置

Publications (1)

Publication Number Publication Date
WO2012022037A1 true WO2012022037A1 (zh) 2012-02-23

Family

ID=45604691

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2010/076110 WO2012022037A1 (zh) 2010-08-18 2010-08-18 一种基站子系统获知移动终端能力的方法和装置

Country Status (3)

Country Link
EP (1) EP2608583A4 (zh)
CN (1) CN102986260B (zh)
WO (1) WO2012022037A1 (zh)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013062460A1 (en) * 2011-10-26 2013-05-02 Telefonaktiebolaget L M Ericsson (Publ) Methods and network nodes for determining an indication of interference mitigation and for scheduling a transmission
CN110650473A (zh) * 2018-06-27 2020-01-03 华为技术有限公司 一种能力上报的方法及装置

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9226184B2 (en) 2013-06-27 2015-12-29 Cisco Technology, Inc. Estimating and utilizing client receive interference cancellation capability in multi-user transmissions

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1806454A (zh) * 2003-06-13 2006-07-19 摩托罗拉公司 用于在具有增强终端的网络中改善中继效率的设备与方法
CN101087160A (zh) * 2006-06-08 2007-12-12 大唐移动通信设备有限公司 一种上行增强优先级调度方法及装置
CN101133670A (zh) * 2005-01-26 2008-02-27 松下电器产业株式会社 无线基站和终端装置

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7200172B2 (en) * 2003-02-27 2007-04-03 Nokia Corporation Method and apparatus for determining components of a channel impulse response for use in a SAIC equalizer
US20050036575A1 (en) * 2003-08-15 2005-02-17 Nokia Corporation Method and apparatus providing low complexity equalization and interference suppression for SAIC GSM/EDGE receiver
US7809091B2 (en) * 2006-01-05 2010-10-05 Broadcom Corporation Method and system for decoding single antenna interference cancellation (SAIC) and redundancy processing adaptation using frame process
EP2263345A1 (en) * 2008-03-31 2010-12-22 Nokia Siemens Networks OY Method and device for testing a mobile station's capability of processing at least one second channel and communication system comprising such device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1806454A (zh) * 2003-06-13 2006-07-19 摩托罗拉公司 用于在具有增强终端的网络中改善中继效率的设备与方法
CN101133670A (zh) * 2005-01-26 2008-02-27 松下电器产业株式会社 无线基站和终端装置
CN101087160A (zh) * 2006-06-08 2007-12-12 大唐移动通信设备有限公司 一种上行增强优先级调度方法及装置

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013062460A1 (en) * 2011-10-26 2013-05-02 Telefonaktiebolaget L M Ericsson (Publ) Methods and network nodes for determining an indication of interference mitigation and for scheduling a transmission
US9794812B2 (en) 2011-10-26 2017-10-17 Telefonaktiebolaget L M Ericsson Methods and network nodes for determining an indication of interference mitigation and for scheduling a transmission
CN110650473A (zh) * 2018-06-27 2020-01-03 华为技术有限公司 一种能力上报的方法及装置
CN110650473B (zh) * 2018-06-27 2021-09-07 华为技术有限公司 一种能力上报的方法及装置

Also Published As

Publication number Publication date
CN102986260B (zh) 2016-03-23
EP2608583A4 (en) 2014-07-02
EP2608583A1 (en) 2013-06-26
CN102986260A (zh) 2013-03-20

Similar Documents

Publication Publication Date Title
US9398480B2 (en) Methods of obtaining measurements in the presence of strong and/or highly varying interference
US9338580B2 (en) Method and apparatus for packet loss rate-based codec adaptation
JP6342413B2 (ja) ワイヤレスネットワークにおける協調的な測定
EP2637374B1 (en) A method and apparatus for selecting a receiving apparatus for co-channel operation
US9113348B2 (en) Compressed mode measurements for flexible bandwidth carrier systems, devices, and methods
US8942696B2 (en) Methods and arrangements for performing cell measurements in a cellular communication system having multiple antenna ports
US8706068B2 (en) Adaptive signal power measurement methods and apparatus
US20140146732A1 (en) Methods and apparatus for cooperating between wireless wide area network radios and wireless local area network radios
US20130115994A1 (en) Set management for flexible bandwidth carriers
US20120077445A1 (en) Wireless communication system, wireless communication method, base station apparatus, and terminal station apparatus
JP2013500659A (ja) 通信システムにおいて端末における自己干渉を減らす方法、装置及びコンピュータ読み取り可能な記録媒体。
CA2685079A1 (en) Carrier switching in a multi-carrier wireless communication network
CA2702343A1 (en) Resource scaling in wireless communication systems
CA2759207A1 (en) Time shifting of co-channel data transmissions to reduce co-channel interference
JP2010531616A (ja) 通信システムにおいてセルオフセットを送信する方法および装置
US9596638B2 (en) Apparatus, systems and methods for improved link quality evaluation of mobile cellular systems
KR101568705B1 (ko) 더미 단말을 이용하여 두 단말을 페어링하는 방법
WO2012022037A1 (zh) 一种基站子系统获知移动终端能力的方法和装置
WO2012012942A1 (zh) 一种基站子系统获知移动终端能力的方法和装置
WO2011072444A1 (zh) 一种基站侧系统获知移动终端支持能力的方法及系统
WO2012037730A1 (zh) 检测移动终端干扰抑制消除支持能力的方法和系统
KR100708502B1 (ko) 무선 네트워크 기능으로 사용된 중간 주파수 측정값을추정하는 시스템 및 방법
WO2014110766A1 (zh) 信道质量测量方法、用户设备以及基站

Legal Events

Date Code Title Description
WWE Wipo information: entry into national phase

Ref document number: 201080067977.5

Country of ref document: CN

121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 10856035

Country of ref document: EP

Kind code of ref document: A1

WWE Wipo information: entry into national phase

Ref document number: 2010856035

Country of ref document: EP

NENP Non-entry into the national phase

Ref country code: DE