WO2014131346A1 - 认知无线电系统干扰处理方法和设备 - Google Patents

认知无线电系统干扰处理方法和设备 Download PDF

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Publication number
WO2014131346A1
WO2014131346A1 PCT/CN2014/072533 CN2014072533W WO2014131346A1 WO 2014131346 A1 WO2014131346 A1 WO 2014131346A1 CN 2014072533 W CN2014072533 W CN 2014072533W WO 2014131346 A1 WO2014131346 A1 WO 2014131346A1
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WIPO (PCT)
Prior art keywords
interference processing
subframe
interference
interfered
signal transmission
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PCT/CN2014/072533
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English (en)
French (fr)
Inventor
白文岭
李媛媛
蒋成钢
杨宇
胡金玲
Original Assignee
电信科学技术研究院
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Publication of WO2014131346A1 publication Critical patent/WO2014131346A1/zh

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W16/00Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/14Spectrum sharing arrangements between different networks

Definitions

  • the present invention relates to the field of wireless communications, and in particular, to a cognitive radio system interference processing method and apparatus. Background of the invention
  • the radio communication spectrum (Spectrum) is a valuable natural resource. With the rapid development of wireless communication technology, the problem of poor spectrum resources is becoming more and more serious. After monitoring and researching the wireless communication spectrum, it was found that certain frequency bands, such as TV bands, were not used most of the time or were not used in most areas, while some bands showed multiple systems. The situation in which multiple users compete at the same time, that is, the use of spectrum resources is uneven.
  • CR technology is produced in this context.
  • CR technology can improve the efficiency and flexibility of frequency communication in wireless communication systems.
  • the spectrum usage of the authorized system is obtained, and the transmission parameters of the CR system are adjusted according to the spectrum usage of the authorized system, thereby ensuring that the authorized system is not subject to harmful interference and guaranteeing the performance of the CR system itself.
  • the traditional working mode of the CR system is designed for scenarios where the authorized system is continuously transmitting in the time domain (such as a broadcast television system).
  • the CR system first determines the blank spectrum, that is, determines the spectrum that is not used by the authorized system, and accesses the blank spectrum.
  • the CR system finds that the authorized system reappears in the currently used white space, that is, the source operating frequency, the CR system exits the currently used white space spectrum, and switches the entire CR system to other blank spectrum, that is, the target working frequency. The process of restoring business.
  • the CR system stops working.
  • the signal transmission power of some authorized systems is very large, such as radar transmit power.
  • the rate can reach several hundred kilowatts.
  • an authorization system on the one hand, in the geographical area adjacent to the transmitter of the authorization system, not only the transmission band corresponding to the transmitter signal of the authorized system is interfered, but also the adjacent system or the adjacent frequency band or even the entire frequency band is subject to the transmitter of the authorized system. Strong interference from the signal.
  • the transmitted signal of such an authorized system is discontinuous in the time domain, periodically transmitted, such as the radar system signal is a time domain pulse signal, and the CR system transmits the duration of the authorized system signal during each authorized system signal period. There will be mutual interference with the authorization system.
  • the authorization system is a radar system
  • the CR system is a TD (Time Division)-LTE-CR system; wherein, the TD-LTE subframe length is 1 ms, and the subframe includes 2 slots, one subframe.
  • OFDM Orthogonal Frequency Division Multiplexing
  • SC-FDMA Single Carrier Frequency-Division Multiple Access
  • the radar signal is a time domain pulse signal, the time domain is discontinuous, the time domain period is generally 0.05 ⁇ 20ms, the typical value is about 0.5ms ⁇ 2ms, the pulse width is divided into long pulse and short pulse, and the long pulse generally does not exceed tens. s, the short pulse is close to 1 ⁇ ⁇ , so it can be seen that the period of the radar signal is close to the TD-LTE sub-frame length, the long pulse may interfere with one OFDM or SC-FDMA symbol, and the short pulse interferes with one OFDM or SC- One-tenth of the FDMA symbol.
  • the traditional CR working mode is designed for the scenario where the authorized system is continuously transmitted in the time domain, and does not consider the characteristics of the authorized system to periodically transmit in the time domain. Therefore, when the transmitting system has a large transmitting power, the CR system is adjacent to the transmitter of the authorized system. The geographical area cannot find the blank spectrum work, and can only stop the operation, which affects the user experience of the CR system. Summary of the invention
  • Embodiments of the present invention provide a cognitive radio system interference processing method and device, To reduce signal interference between the cognitive radio system and the authorization system.
  • the CR system network device acquires a signal transmission parameter of the authorization system
  • the CR system network device determines, according to a signal transmission parameter of the authorization system, a portion of the CR system subframe that is interfered by the authorization system;
  • the CR system network device performs interference processing according to a part of the CR system subframe that is interfered by the authorization system; the interference processing includes a first mode interference processing operation or a second mode interference processing operation; The interference processing operation includes at least a portion of the CR system subframe that is interfered by the authorization system to stop transmitting a signal; the second mode interference processing operation includes stopping transmission of a strong interference subframe, wherein the strong interference subframe It is determined according to the part of the CR system subframe that is interfered by the authorization system.
  • the CR system terminal device acquires a signal transmission parameter of the authorization system
  • the CR system terminal device determines, according to a signal transmission parameter of the authorization system, a portion of the CR system subframe that is interfered by the authorization system;
  • the CR system terminal device performs interference processing according to a part of the CR system subframe that is interfered by the authorization system; the interference processing includes a first mode interference processing operation or a second mode interference processing operation, where the first mode The interference processing operation includes at least a portion of the CR system subframe that is interfered by the authorization system to stop transmitting a signal; the second mode interference processing operation includes stopping transmission of a strong interference subframe, wherein the strong interference subframe It is determined according to the part of the CR system subframe that is interfered by the authorization system.
  • An obtaining module configured to acquire a signal transmission parameter of the authorization system
  • a determining module configured to determine, according to a signal transmission parameter of the authorization system, a part of the CR system subframe that is interfered by the authorization system; a processing module, configured to perform interference processing according to a part of the CR system subframe that is interfered by the authorized system;
  • the interference processing includes a first mode interference processing operation or a second mode interference processing operation;
  • the processing operation includes at least a portion of the CR system subframe that is interfered by the authorization system to stop transmitting a signal;
  • the second mode interference processing operation includes stopping transmission of a strong interference subframe, wherein the strong interference subframe is And determined according to a part of the CR system subframe that is interfered by the authorization system.
  • An obtaining module configured to acquire a signal transmission parameter of the authorization system
  • a determining module configured to determine, according to the obtained signal transmission parameter of the authorization system, a part of the CR system subframe that is interfered by the authorization system;
  • a processing module configured to perform interference processing according to a part of the CR system subframe that is interfered by the authorized system;
  • the interference processing includes a first mode interference processing operation or a second mode interference processing operation;
  • the processing operation includes at least a portion of the CR system subframe that is interfered by the authorization system to stop transmitting a signal;
  • the second mode interference processing operation includes stopping transmission of a strong interference subframe, wherein the strong interference subframe is And determined according to a part of the CR system subframe that is interfered by the authorization system.
  • the CR system obtains the signal transmission parameter of the authorization system, and determines the part of the sub-frame authorized by the authorized system according to the parameter, and then adopts an interference processing operation, thereby fully utilizing the periodicity of the transmission signal of the authorization system.
  • the feature does not work during the transmission period of the authorized system signal transmission period, on the one hand to avoid interference with the authorization system, and on the other hand to avoid interference of the CR system by the authorized system.
  • FIG. 1 is a schematic flowchart of interference processing of a CR system according to an embodiment of the present invention.
  • FIG. 2 is a schematic diagram of signals and signal parameters of an authorization system according to an embodiment of the present invention.
  • FIG. 3 is a schematic flowchart of interference processing of a CR system according to another embodiment of the present invention.
  • FIG. 4 is a schematic flowchart of interference processing of a CR system according to another embodiment of the present invention.
  • FIG. 5 is a schematic structural diagram of a network device of a CR system according to an embodiment of the present invention.
  • FIG. 6 is a schematic structural diagram of a CR system terminal device according to an embodiment of the present invention.
  • FIG. 7 is a schematic structural diagram of a network device of a CR system according to another embodiment of the present invention.
  • FIG. 8 is a schematic structural diagram of a CR system terminal device according to another embodiment of the present invention. Mode for carrying out the invention
  • Embodiments of the present invention provide an interference processing scheme in a cognitive radio system, in which a CR system fully utilizes the periodic characteristics of a transmission signal of an authorization system when operating in a geographical area adjacent to a transmitter of an authorization system, in an authorization system During the transmission period of the signal transmission period, it does not work for a long period of time, on the one hand, avoids interference with the authorization system, and on the other hand, avoids interference of the CR system by the authorized system, thereby ensuring the user experience of the authorization system and the CR system.
  • the technical solution of the embodiment of the present invention is applicable to an LTE system using CR technology, a TD-SCDMA (Time Division-Synchronous Code Division Multiple Access) system, and a GSM (Global System of Mobile communication).
  • Wireless communication systems such as WCDMA (Wideband Code Division Multiple Access;), CDMA-2000 and WRAN (Wireless Regional Area Network), and future evolution systems of the above systems.
  • FIG. 1 is a schematic flowchart of interference processing of a CR system according to an embodiment of the present invention.
  • the base station device in the CR system is taken as an execution entity of the process, and the execution body of the process may also be other network devices capable of performing interference processing operations, such as an RNC (Radio Network Controller).
  • the process may include the following steps 101-103.
  • Step 101 The base station of the CR system acquires a signal transmission parameter of the authorization system.
  • the signal transmission parameters of the authorization system include, but are not limited to: the signal period length InterferPeriod of the authorization system, the signal transmission duration length InterferDurationPerPeriod in each signal period, and the emission start time offset with respect to the CR system.
  • InterferStartTimeOffset may further include: a transmission duration length InterferTotalDuration.
  • Figure 2 shows a schematic diagram of the signal and signal parameters of the authorization system.
  • the transmission start time offset InterferStartTimeOffset refers to the offset of the start time point of the transmission signal of the authorization system and the start time point of the reference subframe based on the reference subframe of the CR system.
  • the base station of the CR system can obtain the signal transmission parameters of the authorization system in various ways, including but not limited to the following three modes.
  • the first method is spectrum sensing.
  • the base station of the CR system obtains the above-mentioned signal transmission parameters of the authorization system according to the signal at the frequency of the authorized system received in the spectrum sensing process through a learning process for a period of time.
  • the second method is to access the database.
  • the base station of the CR system queries the signal transmission parameters of the authorization system from a database in which the signal transmission parameters of the authorization system are recorded.
  • a database recording the signal transmission parameters of the authorization system pushes the signal transmission parameters of the authorization system to the base station of the CR system.
  • the third method is the authorization system assistance mode.
  • the base station of the CR system requests the authorization system to obtain the signal transmission parameters of the authorization system.
  • Step 102 The base station of the CR system determines, according to the signal transmission parameter of the authorization system, a part of the CR system subframe that is interfered by the authorization system.
  • the interference signal signal transmission period length is InterferPeriod
  • the signal transmission duration length in each period is InterferDurationPerPeriod
  • the transmission start time offset is InterferStartTimeOffset
  • the nSubframe subframes after the reference subframe of the transmission start time offset InterferStartTimeOffset (assuming the subframe duration is LengthSubframe), the portion of the nSubframe subframes that is interfered by the authorization system
  • the time domain of the interference caused by the authorized system in the first subframe after subframe 1 is in the interval of [LengthSubframe, 2*LengthSubframe], that is, in subframe 2.
  • Step 103 The base station of the CR system performs interference processing according to the part of the CR system subframe that is interfered by the authorized system.
  • the interference processing mode includes at least a part of the subframe that is interfered by the authorized system stops transmitting the signal, or stops the transmission of the strong interference subframe.
  • the base station of the CR system can implement interference processing in the following three manners.
  • the conventional mapping mode is adopted, and the transmission data is mapped to all available resource locations in the subframe; when the signal is transmitted, the part interfered by the authorization system in the subframe. Stop sending signals.
  • the new mapping mode is adopted, and the transmission data is mapped to all available resource positions in the subframe that are not interfered by the authorized system; when the signal is transmitted, in the subframe.
  • the portion interfered by the authorization system stops transmitting signals.
  • a new mode mapping may be adopted for some channels, and the transmission data is mapped to all available resource locations in the subframe that are not interfered by the authorized system, such as a traffic channel.
  • a PUSCH Physical Uplink Shared Channel
  • PDSCH Physical Downlink Shared Channel
  • the base station of the CR system determines whether the subframe belongs to a strong interference subframe according to a portion of the subframe that is interfered by the authorized system. If the subframe is a strong interference subframe, the transmission of the strong interference subframe is stopped. In an embodiment, if a part of the subframe interfered by the authorized system carries a critical channel and/or a key signal, the subframe is determined to be a strong interference subframe, otherwise, the subframe is determined not to be a strong interference subframe.
  • the critical signals include, but are not limited to, one or a combination of the following: a primary synchronization signal or/and a secondary synchronization signal;
  • the critical channel includes but is not limited to one or a combination of the following:
  • PBCH Physical broadcast channel
  • PDCCH Physical hybrid control channel
  • PHICH physical hybrid-ARQ indicator channel
  • Physical control format indicator channel Physical control format indicator channel
  • PUCCH Physical uplink control channel
  • the base station of the CR system may determine, according to the signal transmission parameter of the authorization system, the part of the CR system subframe that is interfered by the authorization system. In one embodiment, the base station of the CR system can also be determined When the authorization system appears or is about to appear at the current working frequency, or the interference of the authorized system exceeds the set threshold, it is decided to turn on the interference processing operation. After deciding to turn on the interference handling operation, the base station of the CR system can begin to determine the portion of the CR system subframe that is interfered by the authorized system. The base station of the CR system can determine whether the authorized system appears or is about to appear at the current working frequency through the spectrum sensing mode, the database notification mode, or the authorization system assistance, or whether the interference of the authorized system exceeds the set threshold. .
  • the base station of the CR system may decide to enable the interference processing operation when it is determined that the authorized system appears or is about to appear at the current working frequency, or the interference of the authorized system exceeds the set threshold. That is, interference processing is performed according to the part of the CR system subframe that is interfered by the authorized system.
  • the base station of the CR system may pre-agreed the "interference processing duration" for indicating the length of time from the start of the interference processing to the end of the interference processing.
  • the value of the "interference processing duration" may be equal to the transmission duration InterferTotalDuration 0.
  • the base station of the CR system may start timing after the operation of the interference processing is turned on, when the timing duration reaches the "interference processing duration".
  • the CR system ends the foregoing interference processing operation provided by the embodiment of the present invention, and does not perform interference processing on the part of the subsequent subframe that is interfered by the authorized system.
  • Another embodiment of the present invention optimizes the foregoing embodiment to implement interference processing on the network side and the terminal side simultaneously, thereby further reducing signal interference between the CR system and the authorization system.
  • FIG. 3 is a schematic diagram of a process of interference processing of a CR system according to another embodiment of the present invention.
  • the base station device in the CR system is taken as an execution body of the process, and the execution body of the process may also be other network devices capable of implementing interference processing operations, such as RNC.
  • the process can include the following steps 301-304.
  • Step 301 The base station of the CR system acquires a signal transmission parameter of the authorization system. This step The specific implementation is the same as step 101 in FIG.
  • Step 302 The base station of the CR system notifies the terminal in the cell of the acquired signal transmission parameters of the authorized system.
  • the authorization system signal transmission parameter notified by the base station of the CR system to the terminal may include: a signal period length InterferPeriod of the authorization system, a signal transmission duration length InterferDurationPerPeriod in each signal period, and a transmission start time offset InterferStartTimeOffset . Further, the authorization system signal transmission parameter notified by the base station to the terminal may further include: a transmission duration length InterferTotalDuration.
  • the base station of the CR system can transmit the authorization system signal transmission parameters to the terminal through a broadcast message.
  • SIB System Information Block
  • SIB1 and SIB2 can be used to carry the authorization system signal transmission parameters, or the newly defined SIB carrier authorization system signal transmission parameters can also be used.
  • Step 303 The base station and the terminal of the CR system determine, according to the signal transmission parameter of the authorization system, a part of the CR system subframe that is interfered by the authorization system.
  • the specific algorithm in which the portion of the CR system sub-frame that is interfered by the authorized system is determined is the same as step 102 in FIG.
  • Step 304 The base station and the terminal of the CR system perform interference processing according to the part of the CR system subframe that is interfered by the authorized system.
  • the interference processing may include at least one of a downlink direction processing and an uplink direction processing.
  • the base station stops the transmission of the strong interference subframe, the terminal performs signal detection and reception according to the existing method, and the terminal can also stop the reception of the strong interference subframe.
  • the terminal stops the transmission of the strong interference subframe, and the base station performs signal detection and reception according to the existing method, and the base station can also stop the reception of the strong interference subframe.
  • the manner of determining whether the subframe belongs to a strong interference subframe is the same as described above.
  • the critical channel and/or key signals used as the basis for the judgment may be pre-arranged on the base station and the terminal of the CR system in advance.
  • the CR system base station may notify the terminal of the critical channel and/or the key signal in the cell by signaling, or the CR system base station may notify the terminal of the key channel and/or the key by using a broadcast message. signal.
  • the interference processing may further include at least one of downlink direction processing and uplink direction processing as follows.
  • downlink processing in the downlink direction, the part of the base station that is interfered by the authorized system in the subframe stops transmitting signals, and the terminal performs signal detection and reception according to the existing manner, and the terminal may also be interfered by the authorized system in the subframe. Partially stop receiving signals.
  • uplink processing in the uplink direction, the part in the subframe that is interfered by the authorized system stops transmitting signals, and the base station performs signal detection and reception according to the existing manner, and the base station may also be interfered by the authorized system in the subframe. Partially stop receiving signals.
  • the base station and the terminal of the CR system may pre-agreed the processing manner, and implement interference processing according to the agreed processing manner.
  • the agreed treatments can include the following four.
  • the base station of the CR system when the base station of the CR system performs data mapping, the traditional manner is used to map the transmission data to all available resource locations in the subframe; when the signal is sent, the authorization is performed in the subframe.
  • the part of the system interference stops transmitting signals.
  • the terminal of the CR system performs signal reception, it considers that all the parts of the subframe that are interfered by the authorized system are decoded incorrectly, and the part is ignored, thereby abandoning the data carried by the part of the CR system subframe that is interfered by the authorized system.
  • the new mode mapping is adopted, and the transmission data is mapped to all available resource locations in the subframe that are not interfered by the authorized system;
  • the portion of the subframe that is interfered by the authorization system stops transmitting signals.
  • the terminal of the CR system performs signal reception, it is considered that there is no transmission data in the portion of the subframe that is interfered by the authorization system, and the portion is ignored, thereby abandoning the data carried by the portion of the CR system subframe that is interfered by the authorization system.
  • a new manner mapping may be adopted for some channels, such as a traffic channel, such as PUSCH and PDSCH in an LTE system.
  • the terminal of the CR system when the terminal of the CR system performs data mapping, the traditional manner is used to map the transmitted data to all available resource locations in the subframe; when the signal is sent, the subframe is used in the subframe.
  • the part of the authorized system that interferes with the transmission stops signaling.
  • the base station of the CR system detects and receives signals, it considers that all parts of the subframe interfered by the authorized system are all decoded incorrectly, ignoring the part, and thus discarding the data carried by the part of the CR system subframe that is interfered by the authorized system. .
  • the new mode mapping is adopted, and the transmission data is mapped to all available resource locations in the subframe that are not interfered by the authorized system;
  • the portion of the subframe that is interfered by the authorized system stops transmitting signals.
  • the base station of the CR system receives the signal, it considers that there is no transmission data in the part of the subframe that is interfered by the authorized system, and ignores the part, thereby discarding the data carried by the part of the CR system subframe that is interfered by the authorized system.
  • a new resource mapping manner may be adopted for PUSCH and PDSCH for certain channels, such as a traffic channel, for example, in an LTE system.
  • the base station and the terminal of the CR system may be statically specified by a protocol or by a dynamic notification manner.
  • the base station determines the manner of transmitting and receiving the subframes interfered by the authorized system, and sends the manner of selecting the base station to the terminals in the cell by signaling.
  • the base station may notify the terminal within the cell of the selected mode after the step 301 by broadcasting the message.
  • the base station of the CR system can determine the part of the CR system subframe that is interfered by the authorized system according to the signal transmission parameter of the authorization system.
  • the terminal of the CR system may determine that the CR system is subject to the subframe according to the signal transmission parameters of the authorization system. The part that authorizes the system to interfere.
  • interference processing may be performed according to the portion of the CR system subframe that is interfered by the authorized system.
  • the base station and the terminal of the CR system may pre-arrange, for example, statically stipulate “interference processing duration” by the protocol, and the CR system base station may also "interference processing duration" by means of broadcast or RRC signaling notification. Notify the terminal.
  • the meaning and value of "interference processing duration" are as described above.
  • the base station and the terminal of the CR system can start timing when starting to use the dry 4 special processing, for example, starting from the "dry 4 special processing effective time" as the starting point, when the timing duration reaches the length of time indicated by the "interference processing duration"
  • the CR system performs interference processing on a portion of the subsequent subframe that is interfered by the authorized system.
  • Another embodiment of the present invention optimizes the foregoing embodiment to implement interference processing on the network side and the terminal side simultaneously, thereby further reducing signal interference between the CR system and the authorization system.
  • FIG. 4 is a schematic diagram of a process of interference processing of a CR system according to another embodiment of the present invention.
  • the base station device in the CR system is taken as an execution body of the process, and the execution body of the process may also be other network devices capable of implementing interference processing operations, such as RNC.
  • the process can include the following steps 401-405.
  • Step 401 The base station of the CR system acquires a signal transmission parameter of the authorization system.
  • the specific implementation of this step is the same as step 301 in FIG.
  • Step 402 The base station of the CR system notifies the terminal in the cell of the acquired signal transmission parameters of the authorized system.
  • the specific implementation of this step is the same as step 302 in FIG.
  • Step 403 The base station of the CR system decides to enable the interference processing operation, and after determining to enable the interference processing operation, sends an interference processing command to the terminal in the cell, to instruct the terminal to start the interference processing operation.
  • the base station of the CR system may send an interference processing command through a broadcast message, or may send an interference processing command through a terminal-specific command (ie, dedicated signaling).
  • the interference processing command may be carried by RRC signaling, or may be carried by a MAC layer or physical layer signaling such as CFI.
  • the interference processing command may include: "interference processing effective time” and / or “interference processing duration”.
  • the values and meanings of "interference processing effective time” and “interference processing duration” are as described above.
  • the "interference processing effective time” and/or the “interference processing duration” may also be pre-agreed by the base station and the terminal of the CR system, and the "pre-agreed” means: the base station and the terminal of the CR system pass The protocol statically specifies, or the base station notifies the terminal by means of broadcast or RRC signaling notification.
  • the base station of the CR system may determine to enable the interference processing operation when determining that the authorized system appears or is about to appear at the current operating frequency, or when the interference of the authorized system exceeds the set threshold, and decides to enable the interference processing.
  • the operation of the interference processing of the base station of the CR system is turned on, and on the other hand, the interference processing command is transmitted to the terminal in the cell.
  • the base station can start the operation of the interference processing according to the "interference processing effective time", and instruct the terminal to start the interference processing according to the "interference processing effective time”.
  • the base station of the CR system can determine whether the authorized system appears or is about to appear at the current working frequency through the spectrum sensing mode, the database notification mode, or the authorization system assistance mode, or whether the authorized system interference exceeds the set threshold.
  • Step 404 The base station and the terminal of the CR system determine, according to the signal transmission parameters of the authorization system, the part of the CR system subframe that is interfered by the authorized system.
  • the specific implementation of this step is the same as step 303 in FIG.
  • Step 405 The base station and the terminal of the CR system perform interference processing according to the part of the CR system subframe that is interfered by the authorized system.
  • the specific implementation of this step is the same as step 304 in FIG.
  • the base station of the CR system can start timing when the interference processing is turned on.
  • the timing duration reaches the length of time indicated by the "interference processing duration”
  • the foregoing interference processing operation provided by the embodiment of the present invention is ended.
  • the terminal of the CR system can start timing when the interference processing is turned on.
  • the timing duration reaches the length of time indicated by the "interference processing duration”
  • the above-mentioned interference processing operation provided by the embodiment of the present invention is ended.
  • the step of notifying the base station of the CR system of the acquired signal transmission parameters of the authorized system to the terminal in the cell is omitted.
  • the signal transmission parameter of the authorization system acquired by the base station of the CR system is included.
  • the signal transmission parameters of the authorization system included in the interference processing command may include: a signal period length InterferPeriod of the authorization system, a signal transmission duration length InterferDurationPerPeriod in each signal period, and an emission start time offset InterferStartTimeOffset.
  • the method may further include: The duration of the transmission is InterferTotalDuration.
  • the method for obtaining the signal transmission parameters of the authorization system of the terminal of the CR system may include: acquiring the signal transmission parameters of the authorization system by means of a spectrum sensing mode, an access database mode, or an authorization system assistance mode.
  • the base station of the CR system after obtaining the signal transmission parameter of the authorization system, notifies the terminal in the cell, so that the terminal obtains the signal transmission parameter of the authorization system.
  • the base station of the CR system after acquiring the signal transmission parameter of the authorization system, sends the signal to the terminal in the cell through the interference processing command, so that the terminal obtains the signal transmission parameter of the authorization system.
  • Table 1 shows the message format and content of the interference processing command.
  • Table 1 The command field meaning bit number is optional/required authorization system message indicates that the terminal authorization system signal nl bit is optional.
  • the base station does not send the transmission period number transmission period to send the authorization system signal transmission parameter, the i or is mandatory. In the period, the terminal indicates that each of the interference signals n2 bits is selectable.
  • the base station does not transmit a signal transmission authorization system signal transmission duration time duration parameter in the transmission period, the i or the mandatory transmission starts to indicate the terminal.
  • the n3 bit of the interference signal is optional.
  • the base station does not transmit the offset start transmission time offset to send the authorization system signal transmission parameter, the i or the mandatory interference processing indicates that the terminal interference processing generates n4 bits.
  • Interference processing indicating that the terminal is processed from interference, n5 bits, optional
  • the CR system when the CR system works in the geographical area adjacent to the transmitter of the authorization system, the CR system fully utilizes the periodic characteristics of the transmission signal of the authorization system, and during the signal transmission period of the authorization system Does not work during the duration of the transmission, or stops transmitting and receiving signals in the subframe subject to strong interference, on the one hand to avoid interference of the CR system to the authorized system, and on the other hand to avoid interference of the CR system by the authorized system, thereby ensuring the authorization system and CR The user experience of the system.
  • FIG. 5 is a schematic structural diagram of a network device of a CR system according to an embodiment of the present invention.
  • the network device may include: an obtaining module 51, a determining module 52, and a processing module 53.
  • the acquisition module 51 is configured to acquire signal transmission parameters of the authorization system.
  • the determining module 52 is configured to determine, according to the obtained signal transmission parameter of the authorization system, a portion of the CR system subframe that is interfered by the authorized system.
  • the processing module 53 is configured to perform interference processing according to a portion of the CR system subframe that is interfered by the authorized system.
  • the interference processing includes a first mode interference processing operation or a second mode interference processing operation.
  • the first mode interference processing operation includes at least a portion of the CR system subframe that is interfered by the authorization system to stop transmitting signals.
  • the second mode interference processing operation is to stop the transmission of the strong interference subframe.
  • the strong interference subframe is determined according to the part of the CR system subframe that is interfered by the authorization system.
  • the first mode interference processing operation adopted by the processing module 53 further includes: mapping the data to an available resource location in the CR system subframe that is not interfered by the authorization system.
  • processing module 53 may map data for a given channel to available resource locations within the CR system subframe that are not interfered by the authorized system.
  • the designated channel includes the PDSCH.
  • the first mode interference processing operation adopted by the processing module 53 further includes: discarding data carried in a portion of the received CR system subframe that is interfered by the authorization system.
  • the second mode interference processing operation employed further includes: abandoning the reception of the strong interference subframe.
  • the determining module 52 determines the strong interference subframe according to the part of the CR system subframe that is interfered by the authorized system, if the part of the CR system subframe that is interfered by the authorized system carries the critical channel and/or the key signal, It is determined that the CR system subframe is a strong interference subframe.
  • the specific content of the key channel and the key signal may be the same as before, and details are not described herein again.
  • the processing module 53 can determine that the authorization system appears at the current working frequency or Will occur, or when the interference of the authorized system exceeds the set threshold, the interference processing is performed according to the part of the CR system subframe that is interfered by the authorized system.
  • the network device may further include a notification module 54.
  • the notification module 54 is configured to notify the terminal in the cell of the acquired signal transmission parameter of the authorization system, and after determining to enable the interference processing operation, The terminal sends an interference processing command, and is used to instruct the terminal to perform interference processing according to a part of the CR system subframe that is interfered by the authorized system.
  • the notification module 54 is configured to send an interference processing command to the terminal in the cell after the decision to enable the interference processing operation,
  • the part of the CR system that is interfered by the authorization system performs interference processing, and the interference processing command includes at least the signal transmission parameter of the authorization system acquired by the obtaining module 51.
  • the notification module may determine to start the interference processing operation when it is determined that the authorization system appears or is about to appear at the current operating frequency, or the interference of the authorized system exceeds the set threshold.
  • the notification module 54 may notify the terminal in the cell of the signal transmission parameters of the obtained authorization system by using a broadcast message.
  • the notification module 54 may carry the signal transmission parameters of the authorization system in the system information blocks SIB1 or / and SIB2 in the broadcast message, or in the extended system information block.
  • the notification module 54 may send the interference processing command by using a broadcast message or a dedicated signaling.
  • the interference processing command is carried in RRC signaling or MAC layer or physical layer signaling.
  • the interference processing command sent by the notification module 54 further includes an interference processing effective time, and is used to indicate, when the interference processing effective time arrives, the part that is interfered by the authorized system in the CR system subframe. Interference processing is performed. Correspondingly, when the processing module 53 reaches the time indicated by the interference processing effective time, according to the CR system The part of the subframe that is interfered by the authorized system performs interference processing.
  • the interference processing command sent by the notification module 54 further includes an interference processing duration, and is used to instruct the terminal to stop the interference when the time length indicated by the interference processing to the interference processing duration is reached. deal with.
  • the length of time indicated by the interference processing duration is not less than the signal transmission duration of the authorized system.
  • the processing module 53 starts counting after starting the interference processing, and stops the interference processing when the timing duration reaches the length of time indicated by the interference processing duration.
  • the signal transmission parameter of the authorization system acquired by the obtaining module 51 at least includes: a signal period length of the authorization system; a signal transmission duration length in each signal period of the authorization system; the authorization system The emission start time offset with respect to the CR system.
  • the signal transmission parameter of the authorization system further comprises: a signal transmission duration length of the authorization system.
  • the processing module 53 can start timing after starting the interference processing, and stop the interference processing when the timing duration reaches the signal transmission duration of the authorized system.
  • FIG. 6 is a schematic structural diagram of a terminal device of a CR system according to an embodiment of the present invention.
  • the terminal device may include: an obtaining module 61, a determining module 62, and a processing module 63.
  • the acquisition module 61 is configured to acquire signal transmission parameters of the authorization system.
  • the determining module 62 is configured to determine, according to the acquired signal transmission parameter of the authorization system, a portion of the CR system subframe that is interfered by the authorization system.
  • the processing module 63 is configured to perform interference processing according to a portion of the CR system subframe that is interfered by the authorized system.
  • the interference processing includes a first mode interference processing operation or a second mode interference processing operation.
  • the first mode interference processing operation the portion of the CR system subframe that is interfered by the authorization system stops transmitting signals.
  • Interference processing operation in the second mode the transmission of strong interference subframes is stopped.
  • the strong interference subframe is determined according to a part of the CR system subframe that is interfered by the authorization system.
  • the first mode interference processing operation adopted by the processing module 63 further includes: mapping the data to an available resource location in the CR system subframe that is not interfered by the authorization system.
  • processing module 63 maps data for a given channel to available resource locations within the CR system subframe that are not interfered by the authorized system.
  • the designated channel includes PUSCH 0
  • the first mode interference processing operation adopted by the processing module 63 further includes: discarding the data carried by the part of the CR system subframe that is interfered by the authorization system.
  • the second mode interference processing operation employed by the processing module 63 further includes: abandoning the reception of the strong interference subframe.
  • the determining module 62 determines the strong interference subframe, if the part of the CR system subframe that is interfered by the authorized system carries the key channel and/or the key signal, determining that the CR system subframe is a strong interference subframe.
  • the specific description of the key channel and the key signal is the same as described above, and will not be described here.
  • the obtaining module 61 may further receive an interference processing command sent by the CR system network device.
  • the processing module 63 performs interference processing according to the interference processing command sent by the CR system network device.
  • the interference command is sent by the CR system network device when it determines that the authorization system appears or is about to appear at the current working frequency, or the interference of the authorized system exceeds the set threshold.
  • the interference processing command includes signal transmission parameters of the authorization system.
  • the obtaining module 61 receives the notification sent by the CR system network device before receiving the interference processing command, where the notification includes the signal transmission parameter of the authorization system.
  • the interference processing command is carried in a broadcast message.
  • the signal transmission parameter of the authorization system is carried in the system information block SIB1 in the broadcast message. Or / and SIB2, or carried in the extended system information block.
  • the acquisition module 61 can receive the interference processing command through a broadcast message or dedicated signaling.
  • the interference processing command is carried in RRC signaling or MAC layer or physical layer signaling.
  • the interference processing command further includes an interference processing effective time.
  • the processing module 63 performs interference processing according to the part of the CR system subframe that is interfered by the authorized system.
  • the interference processing command further includes an interference processing duration.
  • the length of time indicated by the duration of the interference processing is not less than the length of the signal transmission duration of the authorized system.
  • the processing module 63 starts counting after starting the interference processing, and stops the interference processing when the timing duration reaches the length of time indicated by the interference processing duration.
  • the signal transmission parameter of the authorization system includes: at least: a signal period length of the authorization system; a signal transmission duration length in each signal period of the authorization system; and an emission of the authorization system relative to the CR system Start time offset.
  • the signal transmission parameters of the authorization system further comprise: a signal transmission duration of the authorization system.
  • the processing module 63 starts timing after starting the interference processing, and stops the interference processing when the timing duration reaches the signal transmission duration of the authorized system.
  • the embodiment of the present invention further provides a base station device and a terminal device applicable to the CR system of the above embodiment.
  • FIG. 7 is a schematic structural diagram of a network device of a CR system according to an embodiment of the present invention.
  • the network device can include a memory 70 and a processor 71.
  • the memory 70 may be a non-transitory computer readable storage medium.
  • the implementation of the acquisition module 701, the determination module 702, and the processing module 703 are stored in the memory 70.
  • the processor 71 can execute computer readable instructions stored in the memory.
  • the obtaining module 701 is configured to acquire a signal transmission parameter of the authorization system.
  • the determining module 702 is configured to determine, according to the obtained signal transmission parameter of the authorization system, a portion of the CR system subframe that is interfered by the authorization system.
  • the processing module 703 is configured to perform interference processing according to a portion of the CR system subframe that is interfered by the authorized system.
  • the interference processing includes a first mode interference processing operation or a second mode interference processing operation.
  • the first mode interference processing operation includes at least a portion of the CR system subframe that is interfered by the authorization system to stop transmitting signals.
  • the second mode interference processing operation is to stop the transmission of the strong interference subframe.
  • the strong interference subframe is determined according to the part of the CR system subframe that is interfered by the authorization system.
  • computer readable instructions implementing the notification module 704 are further stored in the memory 70.
  • the notification module 704 is configured to notify the terminal in the cell of the acquired signal transmission parameter of the authorization system, and after determining to enable the interference processing operation, The terminal sends an interference processing command, and is used to instruct the terminal to perform interference processing according to a part of the CR system subframe that is interfered by the authorized system.
  • the notification module 704 is configured to send an interference processing command to the terminal in the cell after the decision to enable the interference processing operation,
  • the part of the CR system that is interfered by the authorization system performs interference processing, and the interference processing command includes at least the signal transmission parameter of the authorization system acquired by the obtaining module 701.
  • the notification module may determine to start the interference processing operation when it is determined that the authorization system appears or is about to appear at the current operating frequency, or the interference of the authorized system exceeds the set threshold.
  • Other functions of the obtaining module 51, the determining module 52, the processing module 53, and the notification module 54 in the embodiment shown in FIG. 5 can also be implemented, and will not be described in detail herein.
  • FIG. 8 is a schematic structural diagram of a terminal device of a CR system according to an embodiment of the present invention.
  • the terminal device can include a memory 80 and a processor 81.
  • the memory 80 may be a non-transitory computer readable storage medium.
  • Computer readable instructions implementing the acquisition module 801, the determination module 802, and the processing module 803 are stored in the memory 80.
  • Processor 81 can execute computer readable instructions stored in the memory.
  • the acquisition module 801 is configured to acquire signal transmission parameters of the authorization system.
  • the determining module 802 is configured to determine, according to the obtained signal transmission parameter of the authorization system, a portion of the CR system subframe that is interfered by the authorized system.
  • the processing module 803 is configured to perform interference processing according to a portion of the CR system subframe that is interfered by the authorized system.
  • the interference processing includes a first mode interference processing operation or a second mode interference processing operation.
  • the first mode interference processing operation the portion of the CR system subframe that is interfered by the authorization system stops transmitting signals.
  • the second mode interference processing operation the transmission of the strong interference subframe is stopped.
  • the strong interference subframe is determined according to the part of the CR system subframe that is interfered by the authorization system.
  • the foregoing obtaining module 801, the determining module 802, and the processing module 803 can also implement other functions of the obtaining module 61, the determining module 62, and the processing module 63 in the embodiment shown in FIG. 6, and details are not described herein.
  • the methods and apparatus provided by the embodiments of the present invention may be implemented by hardware, or computer readable instructions, or a combination of hardware and computer readable instructions.
  • the computer readable instructions used in this embodiment are stored by a plurality of processors in a readable storage medium, such as a hard disk, a CD-ROM,
  • the technical solution of the present invention which is essential or contributes to the prior art, may be embodied in the form of a software product stored in a storage medium, including a plurality of instructions for making a The terminal device (which may be a cell phone, a personal computer, a server, or a network device, etc.) performs the methods described in various embodiments of the present invention.
  • Embodiments of the present invention provide a computer readable storage medium for storing instructions for causing a computer to perform the methods described herein.
  • the system or device provided by this embodiment has a storage medium in which computer readable program code is stored for implementing the functions of any of the above embodiments, and these systems or devices (or CPUs or MPUs) can read and Execute the program code stored on the storage medium.
  • the program code read from the storage medium can implement any of the above embodiments, and thus the program code and the storage medium storing the program code are part of the technical solution.
  • Storage media for providing program code include floppy disks, hard disks, magneto-optical disks, optical disks (eg, CD-ROM, CD-R, CD-RW, DVD-ROM, DVD-RAM, DVD-RW, DVD+RW), magnetic disks, Flash card, ROM, etc.
  • the program code can also be downloaded from the server computer via the communication network.
  • an operation at least partially implemented by the program code may be implemented by an operating system running on a computer, thereby implementing the technical solution of any of the above embodiments, wherein the computer is executed based on the program code. instruction.
  • the program code in the storage medium is written to the memory, wherein the memory is located in an expansion board inserted in the computer or in an expansion unit connected to the computer.
  • the CPU in the expansion board or the expansion unit performs at least part of the operation based on the program code according to the instruction, thereby implementing the technical solution of any of the above embodiments.

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Abstract

本发明公开了一种认知无线电系统干扰处理方法和设备。该方法包括:CR系统获取授权系统的信号发射参数;CR系统根据获取到的授权系统的信号发射参数确定CR系统子帧内受到授权系统干扰的部分;CR系统根据CR系统子帧内受到授权系统干扰的部分进行干扰处理。采用本发明可减少认知无线电系统与授权系统之间的信号干扰。

Description

认知无线电系统干扰处理方法和设备 技术领域
本发明涉及无线通信领域, 尤其涉及一种认知无线电系统干扰处理 方法和设备。 发明背景
无线电通信频谱(Spectrum )是一种宝贵的自然资源, 随着无线通 信技术的飞快发展, 频谱资源贫乏的问题日益严重。 在对无线通信频谱 进行监测和研究后发现, 某些频段(channel ), 如电视频段, 在大多数 时间内并未使用或者在大多数地域内并未使用, 而某些频段则出现了多 系统多用户同时竟争的情况, 即频谱资源的使用存在不均衡的现象。
认知无线电(CR, Cognitive Radio )技术正是在这种背景下产生的。 CR技术可以提高无线通信系统的频语使用效率及灵活性。 在 CR技术 中, 获取授权系统的频谱使用情况, 并根据该授权系统的频谱使用情况 调整 CR系统的发射参数, 从而保证授权系统不受到有害干扰, 并且保 证 CR系统自身的性能。
目前, CR系统的传统工作方式是针对授权系统时域持续发射的场景 (如广播电视系统)设计。 在传统工作方式中, CR 系统首先确定空白 频谱, 即确定授权系统未使用的频谱, 并接入空白频谱工作。 当 CR系 统发现授权系统在当前使用的空白频谱, 即源工作频点上重新出现时, CR系统退出当前使用的空白频谱,并将整个 CR系统切换到其他的空白 频谱, 即目标工作频点上恢复业务的过程。 当不存在空白频谱时, CR 系统停止工作。
在实际应用中, 某些授权系统的信号发射功率很大, 如雷达发射功 率可达到几百千瓦。 针对此类授权系统, 一方面, 在授权系统发射机的 邻近地理区域内, 不仅与授权系统发射机信号对应的发射频带被干扰, 其邻频或次邻频乃至整个频带都会受到授权系统发射机信号的强干扰。 另一方面, 此类授权系统的发射信号在时域是不连续的, 周期性发射, 如雷达系统信号为时域脉沖信号, CR 系统在每个授权系统信号周期内 的授权系统信号发射持续期间内, 会与授权系统之间存在相互干扰。
例如, 授权系统为雷达系统, CR系统为 TD ( Time Division , 时域) -LTE-CR系统; 其中, TD-LTE的子帧长度为 1ms, —个子帧内包含 2 个时隙, 一个子帧内包含 12 或 14 个 OFDM ( Orthogonal Frequency Division Multiplexing , 正交频分复用 ) 或 SC-FDMA ( Single-carrier Frequency-Division Multiple Access , 单载波频分多址)符号。 雷达发射 功率可达到几百千瓦, 导致雷达发射机周围相当大的地理区域内当前频 带或邻频或次邻频乃至整个频带被干扰。 而雷达信号为时域脉沖信号, 时域不连续, 时域周期一般为 0.05~20ms, 典型取值在 0.5ms~2ms左右, 脉沖宽度分为长脉沖与短脉沖, 长脉沖一般不超过几十 s, 短脉沖则接 近 1μδ左右, 因此可以看出: 雷达信号的周期接近 TD-LTE的子帧长度, 长脉沖可能干扰一个 OFDM或 SC-FDMA符号, 而短脉沖则干扰一个 OFDM或 SC-FDMA符号的几十分之一。
传统的 CR工作方式是针对授权系统时域持续发射的场景设计的, 没有考虑授权系统在时域周期性发射的特征, 因此当授权系统发射功率 艮大时, CR 系统在授权系统发射机的邻近地理区域无法找到空白频谱 工作, 只能停止运营, 影响了 CR系统的用户体验。 发明内容
本发明实施例提供了一种认知无线电系统干扰处理方法和设备, 用 以减少认知无线电系统与授权系统之间的信号干扰。
本发明实施例提供的一种 CR系统干扰处理方法, 包括:
CR系统网络设备获取授权系统的信号发射参数;
所述 CR 系统网络设备根据所述授权系统的信号发射参数确定 CR 系统子帧内受到所述授权系统干扰的部分;
所述 CR系统网络设备根据所述 CR系统子帧内受到所述授权系统 干扰的部分进行干扰处理; 所述干扰处理包括第一方式干扰处理操作或 第二方式干扰处理操作;所述第一方式干扰处理操作至少包括在所述 CR 系统子帧内受到所述授权系统干扰的部分停止发送信号; 所述第二方式 干扰处理操作包括停止强干扰子帧的发送, 其中, 所述强干扰子帧是根 据所述 CR系统子帧内受到所述授权系统干扰的部分确定出来的。
本发明实施例提供的另一种 CR系统干扰处理方法, 包括:
CR系统终端设备获取授权系统的信号发射参数;
所述 CR 系统终端设备根据所述授权系统的信号发射参数确定 CR 系统子帧内受到所述授权系统干扰的部分;
所述 CR系统终端设备根据所述 CR系统子帧内受到所述授权系统 干扰的部分进行干扰处理; 所述干扰处理包括第一方式干扰处理操作或 第二方式干扰处理操作,所述第一方式干扰处理操作至少包括在所述 CR 系统子帧内受到所述授权系统干扰的部分停止发送信号; 所述第二方式 干扰处理操作包括停止强干扰子帧的发送, 其中, 所述强干扰子帧是根 据所述 CR系统子帧内受到所述授权系统干扰的部分确定出来的。
本发明实施例提供的 CR系统网络设备, 包括:
获取模块, 用于获取授权系统的信号发射参数;
确定模块, 用于根据所述授权系统的信号发射参数确定 CR系统子 帧内受到所述授权系统干扰的部分; 处理模块, 用于根据所述 CR系统子帧内受到所述授权系统干扰的 部分进行干扰处理; 所述干扰处理包括第一方式干扰处理操作或第二方 式干扰处理操作; 所述第一方式干扰处理操作至少包括在所述 CR系统 子帧内受到所述授权系统干扰的部分停止发送信号; 所述第二方式干扰 处理操作包括停止强干扰子帧的发送, 其中, 所述强干扰子帧是根据所 述 CR系统子帧内受到所述授权系统干扰的部分确定出来的。
本发明实施例提供的 CR系统终端设备, 包括:
获取模块, 用于获取授权系统的信号发射参数;
确定模块,用于根据获取到的所述授权系统的信号发射参数确定 CR 系统子帧内受到所述授权系统干扰的部分;
处理模块, 用于根据所述 CR系统子帧内受到所述授权系统干扰的 部分进行干扰处理; 所述干扰处理包括第一方式干扰处理操作或第二方 式干扰处理操作; 所述第一方式干扰处理操作至少包括在所述 CR系统 子帧内受到所述授权系统干扰的部分停止发送信号; 所述第二方式干扰 处理操作包括停止强干扰子帧的发送, 其中, 所述强干扰子帧是根据所 述 CR系统子帧内受到所述授权系统干扰的部分确定出来的。
本发明的上述实施例, CR系统通过获取授权系统的信号发射参数, 并根据该参数确定子帧内受授权系统干扰的部分, 进而采取干扰处理操 作, 从而充分利用授权系统的发射信号的周期性特点, 在授权系统信号 发射周期内的发射持续期间内不工作, 一方面避免干扰授权系统, 另一 方面避免 CR系统受到授权系统的干扰。 附图简要说明
图 1为本发明实施例提供的 CR系统的干扰处理流程示意图。
图 2为本发明实施例中的授权系统的信号及信号参数示意图。 图 3为本发明另一实施例提供的 CR系统的干扰处理流程示意图。 图 4为本发明另一实施例提供的 CR系统的干扰处理流程示意图。 图 5为本发明实施例提供的 CR系统网络设备的结构示意图。
图 6为本发明实施例提供的 CR系统终端设备的结构示意图。
图 7为本发明另一实施例提供的 CR系统网络设备的结构示意图。 图 8为本发明另一实施例提供的 CR系统终端设备的结构示意图。 实施本发明的方式
本发明实施例提供了一种认知无线电系统中干扰处理方案, 该方案 中, CR 系统在授权系统发射机的邻近地理区域工作时, 充分利用授权 系统的发射信号的周期性特点, 在授权系统信号发射周期内的发射持续 期间内不工作, 一方面避免干扰授权系统, 另一方面避免 CR系统受到 授权系统的干扰, 从而使得保证了授权系统和 CR系统的用户体验。
本发明实施例技术方案适用于采用 CR 技术的 LTE 系统、 TD-SCDMA ( Time Division- Synchronous Code Division Multiple Access , 时分同步码分多址)系统、 GSM( Global System of Mobile communication, 全球移动通讯系统)、 WCDMA( Wideband Code Division Multiple Access, 宽带码分多址;)、 CDMA-2000与 WRAN( Wireless Regional Area Network, 无线区域网络)等无线通信系统, 以及以上系统未来的演进系统。
下面结合附图对本发明实施例进行详细描述。
参见图 1 , 为本发明实施例提供的 CR系统的干扰处理流程示意图。 该流程中以 CR系统中的基站设备作为该流程的执行主体为例描述, 该 流程的执行主体还可以是其它能够实现干扰处理操作的网络设备, 比如 RNC ( Radio Network Controller, 无线网络控制器)。 如图所示, 该流程 可包括以下步骤 101~103。 步骤 101 : CR系统的基站获取授权系统的信号发射参数。
在本发明实施例中, 该授权系统的信号发射参数包括但不限于: 授 权系统的信号周期长度 InterferPeriod、 每个信号周期内信号发射持续时 间长度 InterferDurationPerPeriod, 以及相对于 CR系统的发射开始时间 偏移 InterferStartTimeOffset , 还可进一步包括: 发射持续时间长度 InterferTotalDuration。 图 2给出了授权系统的信号及信号参数的示意图。 其中, 发射开始时间偏移 InterferStartTimeOffset是指以 CR系统的参考 子帧为基准, 授权系统的发射信号的起始时间点与该参考子帧起始时间 点的偏移量。
CR系统的基站可通过多种方式获取该授权系统的信号发射参数,其 中包括但不限于以下三种方式。
方式一为频谱感知方式。 比如, CR系统的基站根据在频谱感知过程 中接收到的该授权系统频点上的信号, 通过一段时间的学习过程, 统计 得到该授权系统的上述信号发射参数。
方式二为接入数据库方式。 比如, CR系统的基站从记录有该授权系 统的信号发射参数的数据库查询该授权系统的信号发射参数。 又比如记 录有该授权系统的信号发射参数的数据库将该授权系统的信号发射参 数推送给 CR系统的基站。
方式三为授权系统协助方式。 比如, CR系统的基站向该授权系统请 求获取该授权系统的信号发射参数。
步骤 102: CR系统的基站根据该授权系统的信号发射参数确定 CR 系统子帧内受到该授权系统干扰的部分。
在本发明实施例中, 当根据该授权系统的信号发射参数确定 CR系 统子帧内受到授权系统干扰的部分时, 假设干扰信号信号发射周期长度 为 InterferPeriod、 每个周 期 内 信号发射持续 时 间 长度为 InterferDurationPerPeriod , 发射开始时间偏移为 InterferStartTimeOffset, 则针对发射开始时间偏移 InterferStartTimeOffset 的参考子帧后的第 nSubframe个子帧(假设子帧时间长度为 LengthSubframe ),第 nSubframe 个子帧内受到该授权系统干扰的部分满足如下约束条件:
InterferStartTimeOffset+z*InterferPeriod<t<InterferStartTimeOffset
+InterferDurationPerPeriod+ z*InterferPeriod (条件 1 ); 和
nSubframe*LengthSubframe<t< ( nSubframe+1 ) * LengthSubframe (条 件 2 ); 其中, z为整数。
比如, 若 nSubframe=l , 则根据上述条件 2确定出: 子帧 1后的第 1 个子帧内受到授权系统干扰的时域范围在 [LengthSubframe , 2*LengthSubframe]区间内, 即子帧 2内。 根据上述条件 1 , 取 z=0, 1 , · · · , 计算 t的取值范围, 其中与子帧 2所在时域范围重合的部分, 即为子帧 2内受到该授权系统干扰的时域范围。
步骤 103: CR系统的基站根据 CR系统子帧内受到该授权系统干扰 的部分采取干扰处理。
在本发明实施例中, 干扰处理方式至少包括在子帧内被授权系统干 扰的部分停止发送信号, 或者停止强干扰子帧的发送。
在本发明实施例中, CR系统的基站可采用以下三种方式来实现干扰 处理。
在方式一中, CR系统的基站进行数据映射时,采用传统的映射方式, 将发射数据映射到子帧内所有可用资源位置; 在进行信号发送时, 在子 帧内被该授权系统干扰的部分停止发送信号。
在方式二中, CR系统的基站进行数据映射时, 采用新的映射方式, 将发射数据映射到子帧内所有未受到该授权系统干扰的可用资源位置; 在进行信号发送时, 在子帧内被该授权系统干扰的部分停止发送信号。 在一个实施例中, CR 系统的基站进行数据映射时, 可针对某些信道采 用新的方式映射, 将发射数据映射到子帧内所有未受到该授权系统干扰 的可用资源位置,比如业务信道。例如在 LTE系统中的 PUSCH( Physical uplink shared channel , 物理上行共享息道) 和 /或 PDSCH ( Physical downlink shared channel , 物理下行共享信道)。
在方式三中, CR系统的基站根据子帧内受到该授权系统干扰的部分 判断子帧是否属于强干扰子帧。 如果子帧为强干扰子帧, 则停止发送该 强干扰子帧。 在实施例中, 如果子帧内受到该授权系统干扰的部分承载 关键信道和 /或关键信号, 则判定该子帧为强干扰子帧, 否则, 判定该子 帧不是强干扰子帧。
针对 LTE系统, 该关键信号包括但不限于以下之一或组合: 主同步信号或 /和辅同步信号;
下行参考信号;
上行参考信号。
该关键信道包括但不限于以下之一或组合:
广播信道 ( Physical broadcast channel, PBCH );
物理下行控制信道 ( Physical downlink control channel, PDCCH ); 物理 HARQ ( Hybrid Automatic Repeat Request, 混合自动重传请求 ) 指示信道 ( Physical hybrid-ARQ indicator channel, PHICH );
物理控制格式指示信道 ( Physical control format indicator channel,
PCFICH );
物理上行控制信道(Physical uplink control channel, PUCCH )。
在上述步骤 102中, CR系统的基站在获取到该授权系统的信号发射 参数后, 可以根据该授权系统的信号发射参数确定 CR系统子帧内受到 该授权系统干扰的部分。 在一个实施例中, CR 系统的基站也可在确定 该授权系统在当前工作频点上出现或即将出现, 或者该授权系统的干扰 超过设定门限时, 决定开启干扰处理的操作。 在决定开启干扰处理的操 作后, CR系统的基站可开始确定 CR系统子帧内受到该授权系统干扰的 部分。 其中, CR 系统的基站可通过频谱感知方式, 数据库通知方式或 授权系统协助等方式, 判断该授权系统在当前工作频点上是否出现或是 否即将出现, 或者该授权系统的干扰是否超过设定门限。
在上述步骤 103中,在一个实施例中, CR系统的基站可在确定该授 权系统在当前工作频点上出现或即将出现, 或者授权系统的干扰超过设 定门限时, 决定开启干扰处理的操作, 即根据 CR系统子帧内受到授权 系统干扰的部分采取干扰处理。
进一步的, 上述流程中, CR系统的基站可预先约定"干扰处理持续 时间",用于指示开启干扰处理到结束干扰处理的时间长度。在一个实施 例中, "干扰处理持续时间 "的取值可以等于发射持续时间 InterferTotalDuration0 CR系统的基站可以在开启干扰处理的操作后开始 计时, 当计时时长达到"干扰处理持续时间"所指示的时间长度时, CR 系统结束本发明实施例提供的上述干扰处理操作, 不再对后续子帧中受 到该授权系统干扰的部分执行干扰处理。
本发明另一实施例对上述实施例进行了优化, 以实现网络侧和终端 侧同步进行干扰处理, 从而进一步减少 CR系统与授权系统之间的信号 干扰。
参见图 3 ,为本发明另一实施例提供的 CR系统的干扰处理流程示意 图。该流程中以 CR系统中的基站设备作为该流程的执行主体为例描述, 该流程的执行主体还可以是其它能够实现干扰处理操作的网络设备, 比 如 RNC。 如图所示, 该流程可包括以下步骤 301~304。
步骤 301 : CR系统的基站获取授权系统的信号发射参数。 本步骤的 具体实现方式同图 1中的步骤 101。
步骤 302: CR系统的基站将获取到的授权系统的信号发射参数通知 给小区内的终端。
在本发明实施例中, CR系统的基站通知给终端的授权系统信号发射 参数可包括: 授权系统的信号周期长度 InterferPeriod、 每个信号周期内 信号发射持续时间长度 InterferDurationPerPeriod , 以及发射开始时间偏 移 InterferStartTimeOffset。 进一步的, 基站通知给终端的授权系统信号 发射参数还可包括: 发射持续时间长度 InterferTotalDuration。
CR系统的基站可通过广播消息向终端发送授权系统信号发射参数。 在 LTE系统中,可采用已有系统信息块( SIB , System Information Block ), 如 SIBl与 SIB2承载授权系统信号发射参数,也可使用新定义的 SIB承 载授权系统信号发射参数。
步骤 303: CR系统的基站和终端, 根据该授权系统的信号发射参数 确定 CR系统子帧内受到该授权系统干扰的部分。 其中确定 CR系统子 帧内受到授权系统干扰的部分的具体算法同图 1中的步骤 102。
步骤 304: CR系统的基站和终端, 根据 CR系统子帧内受到该授权 系统干扰的部分采取干扰处理。
在本发明实施例中, 干扰处理可以包括下行方向处理和上行方向处 理中的至少一种。 在下行方向处理中, 在下行方向上, 基站停止强干扰 子帧的发送, 终端按照现有方式进行信号检测和接收, 终端也可以停止 强干扰子帧的接收。 在上行方向处理中, 在上行方向上, 终端停止强干 扰子帧的发送, 基站按照现有方式进行信号检测和接收, 基站也可以停 止强干扰子帧的接收。
其中, 判断子帧是否属于强干扰子帧的方式同前所述。 作为判断依 据的关键信道和 /或关键信号可事先在 CR 系统的基站和终端上预先约 定, 比如可通过协议静态规定, 或者, CR 系统基站通过信令通知小区 内的终端所述关键信道和 /或关键信号, 或者由 CR系统基站通过广播消 息通知终端所述关键信道和 /或关键信号。
干扰处理还可以包括如下下行方向处理和上行方向处理中的至少一 种。 在下行方向处理中, 在下行方向上, 基站在子帧内被该授权系统干 扰的部分停止发送信号, 终端按照现有方式进行信号检测和接收, 终端 也可以在子帧内被该授权系统干扰的部分停止接收信号。 在上行方向处 理中, 在上行方向上, 终端在子帧内被该授权系统干扰的部分停止发送 信号, 基站按照现有方式进行信号检测和接收, 基站也可以在子帧内被 授权系统干扰的部分停止接收信号。
在本发明实施例中, CR系统的基站和终端可预先约定处理方式,根 据约定的处理方式实现干扰处理。 所约定的处理方式可以包括以下四 种。
在方式一中, 在下行方向上, CR系统的基站进行数据映射时, 采用 传统的方式映射, 将发射数据映射到子帧内所有可用资源位置; 在进行 信号发送时, 在子帧内被该授权系统干扰的部分停止发送信号。 CR 系 统的终端在进行信号接收时, 认为子帧内被该授权系统干扰的部分全部 译码错误, 忽略该部分, 从而放弃接收 CR系统子帧内受到该授权系统 干扰的部分所承载的数据。
在方式二中, 在下行方向上, CR系统的基站进行数据映射时, 采用 新的方式映射, 将发射数据映射到子帧内所有未受到该授权系统干扰的 可用资源位置; 在进行信号发送时, 在子帧内被该授权系统干扰的部分 停止发送信号。 CR 系统的终端进行信号接收时, 认为子帧内被该授权 系统干扰的部分不存在发射数据, 忽略该部分, 从而放弃接收 CR系统 子帧内受到该授权系统干扰的部分所承载的数据。在一个实施例中, CR 系统的基站进行数据映射时, 可针对某些信道采用新的方式映射, 比如 业务信道, 例如在 LTE系统中的 PUSCH与 PDSCH。
在方式三中, 在上行方向上, CR系统的终端进行数据映射时, 采用 传统的方式映射, 将发射数据映射到子帧内所有可用资源位置; 在进行 信号发送时, 在子帧内被该授权系统干扰的部分停止发送信号。 CR 系 统的基站在信号检测和接收时, 认为子帧内被该授权系统干扰的部分全 部译码错误, 忽略该部分, 从而放弃接收 CR系统子帧内受到该授权系 统干扰的部分所承载的数据。
在方式四中, 在上行方向上, CR系统的终端进行数据映射时, 采用 新的方式映射, 将发射数据映射到子帧内所有未受到授权系统干扰的可 用资源位置; 在进行信号发送时, 在子帧内被授权系统干扰的部分停止 发送信号。 CR 系统的基站接收信号时, 认为子帧内被授权系统干扰的 部分不存在发射数据, 忽略该部分, 从而放弃接收 CR系统子帧内受到 该授权系统干扰的部分所承载的数据。 在一个实施例中, CR 系统的终 端进行数据映射时, 可针对某些信道, 比如业务信道, 例如在 LTE系统 中, 为 PUSCH与 PDSCH, 采用新的资源映射方式。
在本发明实施例中,在对上述处理方式进行约定时, CR系统的基站 与终端可通过协议静态规定或者通过动态通知方式。 在动态通知方式 中, 基站确定对受到该授权系统干扰的子帧的发送及接收方式, 并将基 站选择的方式通过信令发送给小区内的终端。 在一个实施例中, 基站可 通过广播消息在步骤 301之后, 将所选择的方式通知给小区内的终端。
在上述步骤 303中, CR系统的基站在获取到授权系统的信号发射参 数后, 即可根据授权系统的信号发射参数确定 CR系统子帧内受到授权 系统干扰的部分。 CR 系统的终端在接收到基站通知的授权系统的信号 发射参数后, 可根据授权系统的信号发射参数确定 CR系统子帧内受到 授权系统干扰的部分。 在 CR系统的基站和终端确定出 CR系统子帧内 受到授权系统干扰的部分之后, 可根据 CR系统子帧内受到授权系统干 扰的部分采取干扰处理。
进一步的, 上述流程中, CR系统的基站和终端可预先约定, 如通过 协议静态规定 "干扰处理持续时间", CR 系统基站也可通过广播或者 RRC信令的通知方式将"干扰处理持续时间"通知给终端。 "干扰处理持 续时间 "的含义和取值同前所述。 CR系统的基站和终端可以分别在开始 采用干 4尤处理时开始计时, 如以"干 4尤处理生效时间"为起点开始计时, 当计时时长达到"干扰处理持续时间"所指示的时间长度时, CR 系统的 对后续子帧中受到授权系统干扰的部分执行干扰处理。
本发明另一实施例对上述实施例进行了优化, 以实现网络侧和终端 侧同步进行干扰处理, 从而进一步减少 CR系统与授权系统之间的信号 干扰。
参见图 4,为本发明另一实施例提供的 CR系统的干扰处理流程示意 图。该流程中以 CR系统中的基站设备作为该流程的执行主体为例描述, 该流程的执行主体还可以是其它能够实现干扰处理操作的网络设备, 比 如 RNC。 如图所示, 该流程可包括以下步骤 401~405。
步骤 401 : CR系统的基站获取授权系统的信号发射参数。 本步骤的 具体实现方式同图 3中的步骤 301。
步骤 402: CR系统的基站将获取到的授权系统的信号发射参数通知 给小区内的终端。 本步骤的具体实现方式同图 3中的步骤 302。
步骤 403: CR系统的基站决策开启干扰处理操作, 并在决定开启干 扰处理操作后, 向小区内的终端发送干扰处理命令, 用以指示终端开启 干扰处理操作。 在本发明实施例中, CR系统的基站可通过广播消息发送干扰处理命 令, 也可通过终端 -Specific的命令(即专用信令)发送干扰处理命令。 当干扰处理命令采用终端 -Specific的命令发送时, 干扰处理命令可通过 RRC信令承载, 也可通过 MAC层或者物理层信令如 CFI承载。
干扰处理命令中可包括: "干扰处理生效时间 "和 /或"干扰处理持续 时间 "。 "干扰处理生效时间 "和"干扰处理持续时间 "的取值和含义同前所 述。 在本发明实施例中, "干扰处理生效时间 "和 /或"干扰处理持续时间" 也可以由 CR系统的基站和终端预先约定, 所述"预先约定"是指: CR系 统的基站与终端通过协议静态规定, 或者基站通过广播或者 RRC信令 通知的方式通知终端。
在一个实施例中, CR系统的基站可在确定授权系统在当前工作频点 上出现或即将出现, 或者授权系统的干扰超过设定门限时, 决定开启干 扰处理的操作, 并在决定开启干扰处理操作后, 一方面开启 CR系统的 基站的干扰处理的操作, 另一方面向小区内的终端发送干扰处理命令。 进一步的, 基站可根据"干扰处理生效时间"开启干扰处理的操作, 并指 示终端根据"干扰处理生效时间"开启干扰处理的操作。 其中, CR 系统 的基站可通过频谱感知方式、 数据库通知方式或授权系统协助方式等, 判断授权系统在当前工作频点上是否出现或是否即将出现, 或者授权系 统的干扰是否超过设定门限。
步骤 404: CR系统的基站和终端, 根据授权系统的信号发射参数确 定 CR系统子帧内受到授权系统干扰的部分。 本步骤的具体实现方式同 图 3中的步骤 303。
步骤 405: CR系统的基站和终端, 根据 CR系统子帧内受到授权系 统干扰的部分采取干扰处理。 本步骤的具体实现方式同图 3 中的步骤 304。 进一步的, CR系统的基站可在开启干扰处理时开始计时, 当计时时 长达到 "干扰处理持续时间 "所指示的时间长度时, 结束本发明实施例提 供的上述干扰处理操作。 CR系统的终端可在开启干扰处理时开始计时, 当计时时长达到 "干扰处理持续时间 "所指示的时间长度时, 结束本发明 实施例提供的上述干扰处理操作。
本发明另一实施例对上述实施例进行了筒化。 具体的, 在本实施例 中, 省略了 CR系统的基站将获取到的授权系统的信号发射参数通知给 小区内的终端的步骤。 相应的, 在 CR系统的基站所发送的干扰处理命 令中, 包含 CR系统的基站获取到的授权系统的信号发射参数。 干扰处 理命令中包含的授权系统的信号发射参数可包括: 授权系统的信号周期 长度 InterferPeriod、 每个信号周期内信号发射持续时间长度 InterferDurationPerPeriod , 以 及 发 射 开 始 时 间 偏 移 InterferStartTimeOffset , 进一步的, 还可包括: 发射持续时间长度 InterferTotalDuration。
在本发明实施例中, CR系统的终端获取授权系统的信号发射参数的 实现方式可以包括: 通过频谱感知方式、 接入数据库方式或授权系统协 助方式等方式获取授权系统的信号发射参数。 在本发明实施例中, CR 系统的基站在获取到授权系统的信号发射参数后, 将其通知给小区内的 终端, 从而使终端得到授权系统的信号发射参数。 在本发明实施例中, CR 系统的基站在获取到授权系统的信号发射参数后, 通过干扰处理命 令将其发送给小区内的终端, 从而使终端得到授权系统的信号发射参 数。
综合以上各种情况, 表 1示出了干扰处理命令的消息格式和内容。 表 1 命令域 含义 比特数 可选 /必选 授权系统信 指示终端授权系统信 nl比特 可选, 当基站之前未发 号发射周期 号发射周期 送授权系统信号发射 参数时, 该 i或为必选 每个周期内 指示终端每个干扰信 n2比特 可选, 当基站之前未发 信号发射持 号发射周期内信号发 送授权系统信号发射 续时间 射持续时间 参数时, 该 i或为必选 发射开始时 指示终端干扰信号的 n3比特 可选, 当基站之前未发 间偏移 发射开始时间偏移 送授权系统信号发射 参数时, 该 i或为必选 干扰处理生 指示终端干扰处理生 n4比特 可选
效时间 效时间
干扰处理持 指示终端从干扰处理 n5比特 可选
续时间 生效时间开始,干扰处
理的持续时间
通过以上描述可以看出,本发明实施例的技术方案中, CR系统在授 权系统发射机的邻近地理区域工作时, CR 系统充分利用授权系统的发 射信号周期性特点, 在授权系统信号发射周期内的发射持续期间内不工 作, 或者在受到强干扰的子帧停止收发信号, 一方面避免 CR系统对授 权系统的干扰, 另一方面避免 CR系统受到授权系统的干扰, 从而保证 了授权系统及 CR系统的用户体验。
本发明实施例还提供了一种可应用于上述实施例的 CR系统的基站 设备和终端设备。 参见图 5 , 为本发明实施例提供的 CR系统的网络设备的结构示意 图。 如图所示, 该网络设备可包括: 获取模块 51、 确定模块 52、 处理 模块 53。
获取模块 51用于获取授权系统的信号发射参数。
确定模块 52用于根据获取到的该授权系统的信号发射参数确定 CR 系统子帧内受到该授权系统干扰的部分。
处理模块 53用于根据 CR系统子帧内受到该授权系统干扰的部分进 行干扰处理。 在本发明实施例中, 干扰处理包括第一方式干扰处理操作 或第二方式干扰处理操作。 第一方式干扰处理操作至少包括在 CR系统 子帧内受到该授权系统干扰的部分停止发送信号。 第二方式干扰处理操 作为停止强干扰子帧的发送。 其中, 强干扰子帧是根据 CR系统子帧内 受到所述授权系统干扰的部分确定出来的。
进一步的,处理模块 53所采用的第一方式干扰处理操作还包括: 将 数据映射到 CR系统子帧内未受到该授权系统干扰的可用资源位置。 在 一个实施例中,处理模块 53可将指定信道的数据映射到 CR系统子帧内 未受到该授权系统干扰的可用资源位置。 在 LTE系统中, 指定信道包括 PDSCH。
进一步的,处理模块 53所采用的第一方式干扰处理操作还包括:放 弃接收 CR系统子帧内受到该授权系统干扰的部分所承载的数据。 所采 用的第二方式干扰处理操作还包括: 放弃接收强干扰子帧。
具体的,确定模块 52在根据 CR系统子帧内受到该授权系统干扰的 部分确定强干扰子帧时, 如果 CR系统子帧内受到该授权系统干扰的部 分承载关键信道和 /或关键信号, 则确定该 CR系统子帧为强干扰子帧。 其中, 该关键信道和关键信号的具体内容可同前所述, 在此不再赘述。
具体的,处理模块 53可在确定授权系统在当前工作频点上出现或即 将出现, 或者授权系统的干扰超过设定门限时, 根据 CR系统子帧内受 到该授权系统干扰的部分进行干扰处理。
在本发明实施例中, 该网络设备还可进一步包括通知模块 54。
在获取模块 51获取到该授权系统的信号发射参数后, 通知模块 54 用于将获取到的该授权系统的信号发射参数通知给小区内的终端, 在决 定开启干扰处理操作后, 向小区内的终端发送干扰处理命令, 用于指示 终端根据 CR系统子帧内受到该授权系统干扰的部分进行干扰处理。
在本发明实施例中,在获取模块 51获取到该授权系统的信号发射参 数后, 通知模块 54用于在决定开启干扰处理操作后, 向小区内的终端 发送干扰处理命令, 用于指示终端根据 CR系统子帧内受到该授权系统 干扰的部分进行干扰处理, 该干扰处理命令中至少包括该获取模块 51 获取到的该授权系统的信号发射参数。
在本发明实施例中, 通知模块可以在确定该授权系统在当前工作频 点上出现或即将出现, 或者该授权系统的干扰超过设定门限时, 决定开 启干扰处理操作。
在本发明实施例中,通知模块 54可通过广播消息,将获取到的授权 系统的信号发射参数通知给小区内的终端。 在 LTE 系统中, 通知模块 54可将授权系统的信号发射参数承载于广播消息中的系统信息块 SIB1 或 /和 SIB2中, 或承载于扩展的系统信息块中。通知模块 54可通过广播 消息或专用信令发送该干扰处理命令, 在通过专用信令发送该干扰处理 命令时, 该干扰处理命令承载于 RRC信令或 MAC层或物理层信令。
在本发明实施例中,通知模块 54发送的该干扰处理命令中进一步包 含干扰处理生效时间, 用于指示终端在该干扰处理生效时间到达时, 根 据 CR系统子帧内受到该授权系统干扰的部分进行干扰处理。 相应的, 处理模块 53在该干扰处理生效时间所指示的时间达到时,根据 CR系统 子帧内受到该授权系统干扰的部分进行干扰处理。
在本发明实施例中,通知模块 54发送的该干扰处理命令中进一步包 含干扰处理持续时间, 用于指示终端在从开始进行干扰处理到该干扰处 理持续时间所指示的时间长度到达时停止进行干扰处理。 该干扰处理持 续时间所指示的时间长度, 不小于该授权系统的信号发射持续时间长 度。 相应的, 处理模块 53 在开始进行干扰处理后开始计时, 当计时时 长达到该干扰处理持续时间所指示的时间长度后, 停止进行干扰处理。
在本发明实施例中,获取模块 51获取到的该授权系统的信号发射参 数至少包括: 该授权系统的信号周期长度; 该授权系统的每个信号周期 内, 信号发射持续时间长度; 该授权系统相对于 CR系统的发射开始时 间偏移。
在本发明实施例中, 该授权系统的信号发射参数进一步包括: 该授 权系统的信号发射持续时间长度。 相应的, 处理模块 53 可在开始进行 干扰处理后开始计时, 当计时时长达到该授权系统的信号发射持续时间 长度时, 停止进行干扰处理。
参见图 6, 为本发明实施例提供的 CR系统的终端设备的结构示意 图。 如图所示, 该终端设备可包括: 获取模块 61、 确定模块 62、 处理 模块 63。
获取模块 61用于获取授权系统的信号发射参数。
确定模块 62用于根据获取到的该授权系统的信号发射参数确定 CR 系统子帧内受到该授权系统干扰的部分。
处理模块 63用于根据 CR系统子帧内受到该授权系统干扰的部分进 行干扰处理。 在本发明实施例中, 干扰处理包括第一方式干扰处理操作 或第二方式干扰处理操作。 在第一方式干扰处理操作中, 在 CR系统子 帧内受到该授权系统干扰的部分停止发送信号。 在第二方式干扰处理操 作中, 停止强干扰子帧的发送。 其中, 强干扰子帧是根据 CR系统子帧 内受到所述授权系统干扰的部分确定出来的。
进一步的,处理模块 63采用的第一方式干扰处理操作还包括: 将数 据映射到 CR系统子帧内未受到该授权系统干扰的可用资源位置。 在一 个实施例中,处理模块 63将指定信道的数据映射到 CR系统子帧内未受 到该授权系统干扰的可用资源位置。 在 LTE 系统中, 指定信道包括 PUSCH0
进一步的,处理模块 63采用的第一方式干扰处理操作还包括:放弃 接收 CR系统子帧内受到该授权系统干扰的部分所承载的数据。 处理模 块 63采用的第二方式干扰处理操作还包括: 放弃接收强干扰子帧。
具体的, 确定模块 62确定强干扰子帧时, 如果 CR系统子帧内受到 该授权系统干扰的部分承载关键信道和 /或关键信号, 则确定该 CR系统 子帧为强干扰子帧。 该关键信道和关键信号的具体说明同前所述, 在此 不再赘述。
在本发明实施例中,获取模块 61还可进一步接收 CR系统网络设备 发送的干扰处理命令。处理模块 63根据该 CR系统网络设备发送的干扰 处理命令进行干扰处理。 其中, 该干扰命令是 CR系统网络设备在确定 授权系统在当前工作频点上出现或即将出现, 或者授权系统的干扰超过 设定门限时发送的。 该干扰处理命令中包含该授权系统的信号发射参 数。
在本发明实施例中,获取模块 61在接收到该干扰处理命令之前还接 收到 CR系统网络设备发送的通知, 该通知中包含该授权系统的信号发 射参数。
在本发明实施例中, 该干扰处理命令承载于广播消息。 在 LTE系统 中, 该授权系统的信号发射参数承载于广播消息中的系统信息块 SIB1 或 /和 SIB2中, 或承载在扩展的系统信息块中。
获取模块 61可通过广播消息或专用信令接收该干扰处理命令。获取 模块 61 通过专用信令接收该干扰处理命令时, 该干扰处理命令承载于 RRC信令或 MAC层或物理层信令。
在本发明实施例中, 该干扰处理命令中进一步包含干扰处理生效时 间。 相应的, 处理模块 63在该干扰处理生效时间所指示的时间达到时, 根据 CR系统子帧内受到该授权系统干扰的部分进行干扰处理。
在本发明实施例中, 该干扰处理命令中进一步包含干扰处理持续时 间。 该干扰处理持续时间所指示的时间长度不小于该授权系统的信号发 射持续时间长度。 相应的, 处理模块 63 在开始进行干扰处理后开始计 时, 当计时时长达到该干扰处理持续时间所指示的时间长度后, 停止进 行干扰处理。
在本发明实施例中, 该授权系统的信号发射参数至少包括: 该授权 系统的信号周期长度; 该授权系统的每个信号周期内, 信号发射持续时 间长度; 该授权系统相对于 CR系统的发射开始时间偏移。 在本发明实 施例中, 该授权系统的信号发射参数进一步包括: 授权系统的信号发射 持续时间长度。 相应的, 处理模块 63在开始进行干扰处理后开始计时, 当计时时长达到该授权系统的信号发射持续时间长度时, 停止进行干扰 处理。
本发明实施例还提供了一种可应用于上述实施例的 CR系统的基站 设备和终端设备。
参见图 7, 为本发明实施例提供的 CR系统的网络设备的结构示意 图。 如图所示, 该网络设备可包括存储器 70和处理器 71。 根据本申请 的一个实施例, 该存储器 70 可以是非易失性计算机可读存储介质。 在 存储器 70中存储有实现获取模块 701、 确定模块 702、 处理模块 703的 计算机可读指令。 处理器 71可以执行存储器中存储的计算机可读指令。 获取模块 701用于获取授权系统的信号发射参数。
确定模块 702 用于根据获取到的该授权系统的信号发射参数确定 CR系统子帧内受到该授权系统干扰的部分。
处理模块 703用于根据 CR系统子帧内受到该授权系统干扰的部分 进行干扰处理。 在本发明实施例中, 干扰处理包括第一方式干扰处理操 作或第二方式干扰处理操作。 第一方式干扰处理操作至少包括在 CR系 统子帧内受到该授权系统干扰的部分停止发送信号。 第二方式干扰处理 操作为停止强干扰子帧的发送。 其中, 强干扰子帧是根据 CR系统子帧 内受到所述授权系统干扰的部分确定出来的。
本发明实施例中, 在存储器 70中还进一步存储有实现通知模块 704 的计算机可读指令。
在获取模块 701获取到该授权系统的信号发射参数后,通知模块 704 用于将获取到的该授权系统的信号发射参数通知给小区内的终端, 在决 定开启干扰处理操作后, 向小区内的终端发送干扰处理命令, 用于指示 终端根据 CR系统子帧内受到该授权系统干扰的部分进行干扰处理。
在本发明实施例中, 在获取模块 701获取到该授权系统的信号发射 参数后, 通知模块 704用于在决定开启干扰处理操作后, 向小区内的终 端发送干扰处理命令, 用于指示终端根据 CR系统子帧内受到该授权系 统干扰的部分进行干扰处理, 该干扰处理命令中至少包括该获取模块 701获取到的该授权系统的信号发射参数。
在本发明实施例中, 通知模块可以在确定该授权系统在当前工作频 点上出现或即将出现, 或者该授权系统的干扰超过设定门限时, 决定开 启干扰处理操作。
上述获取模块 701、 确定模块 702、 处理模块 703和通知模块 704 还可以实现图 5所示实施例中获取模块 51、 确定模块 52、 处理模块 53 和通知模块 54的其他功能, 在此不再详述。
参见图 8, 为本发明实施例提供的 CR系统的终端设备的结构示意 图。 如图所示, 该终端设备可包括存储器 80和处理器 81。 根据本申请 的一个实施例, 该存储器 80 可以是非易失性计算机可读存储介质。 在 存储器 80中存储有实现获取模块 801、 确定模块 802、 处理模块 803的 计算机可读指令。 处理器 81可以执行存储器中存储的计算机可读指令。
获取模块 801用于获取授权系统的信号发射参数。
确定模块 802 用于根据获取到的该授权系统的信号发射参数确定 CR系统子帧内受到该授权系统干扰的部分。
处理模块 803用于根据 CR系统子帧内受到该授权系统干扰的部分 进行干扰处理。 在本发明实施例中, 干扰处理包括第一方式干扰处理操 作或第二方式干扰处理操作。 在第一方式干扰处理操作中, 在 CR系统 子帧内受到该授权系统干扰的部分停止发送信号。 在第二方式干扰处理 操作中, 停止强干扰子帧的发送。 其中, 强干扰子帧是根据 CR系统子 帧内受到所述授权系统干扰的部分确定出来的。
上述获取模块 801、 确定模块 802、 处理模块 803还可以实现图 6 所示实施例中获取模块 61、 确定模块 62、 处理模块 63的其他功能, 在 此不再详述。
本发明实施例提供的方法和设备可以由硬件、 或计算机可读指令、 或者硬件和计算机可读指令的结合来实现。 本实施例中使用的计算机可 读指令由多个处理器存储在可读存储介质中, 例如硬盘、 CD-ROM、
DVD、 光盘、 软盘、 磁带、 RAM、 ROM或其它合适的存储设备。 或者, 至少部分计算机可读指令可以由具体硬件替换, 例如, 定制集成线路、 门阵列、 FPGA、 PLD和具体功能的计算机等等。 基于这样的理解, 本发明的技术方案本质上或者说对现有技术做出 贡献的部分可以以软件产品的形式体现出来, 该计算机软件产品存储在 一个存储介质中, 包括若干指令用以使得一台终端设备 (可以是手机, 个人计算机, 服务器, 或者网络设备等)执行本发明各个实施例所述的 方法。
本发明实施例提供了计算机可读存储介质, 用于存储指令使得计算 机执行本文所述的方法。 具体地, 本实施例提供的系统或设备都具有存 储介质, 其中存储了计算机可读程序代码, 用于实现上述任意实施例的 功能, 并且这些系统或设备 (或 CPU或 MPU ) 能够读取并且执行存储 在存储介质中的程序代码。
在这种情况下, 从存储介质中读取的程序代码可以实现上述任一实 施例, 因此该程序代码和存储该程序代码的存储介质是技术方案的一部 分。
用于提供程序代码的存储介质包括软盘、 硬盘、 磁光盘、 光盘(例 如 CD-ROM、 CD-R, CD-RW、 DVD-ROM、 DVD-RAM、 DVD-RW、 DVD+RW )、 磁盘、 闪存卡、 ROM等等。 可选地, 程序代码也可以通过 通信网络从 务器电脑上下载。
应该注意的是, 对于由计算机执行的程序代码, 至少部分由程序代 码实现的操作可以由运行在计算机上的操作系统实现, 从而实现上述任 一实施例的技术方案, 其中该计算机基于程序代码执行指令。
另外, 存储介质中的程序代码被写入存储器, 其中, 该存储器位于 插入在计算机中的扩展板中, 或者位于连接到计算机的扩展单元中。 在 本实施例中,扩展板或扩展单元中的 CPU根据指令,基于程序代码执行 至少部分操作, 从而实现上述任一实施例的技术方案。
以上所述仅是本发明的优选实施方式, 应当指出, 对于本技术领域 的普通技术人员来说, 在不脱离本发明原理的前提下, 还可以做出若干 改进和润饰, 这些改进和润饰也应视本发明的保护范围。

Claims

权利要求书
1、 一种认知无线电 CR系统干扰处理方法, 其特征在于, 所述方法 包括:
CR系统网络设备获取授权系统的信号发射参数;
所述 CR 系统网络设备根据所述授权系统的信号发射参数确定 CR 系统子帧内受到所述授权系统干扰的部分;
所述 CR系统网络设备根据所述 CR系统子帧内受到所述授权系统 干扰的部分进行干扰处理; 所述干扰处理包括第一方式干扰处理操作或 第二方式干扰处理操作;所述第一方式干扰处理操作至少包括在所述 CR 系统子帧内受到所述授权系统干扰的部分停止发送信号; 所述第二方式 干扰处理操作包括停止强干扰子帧的发送, 其中, 所述强干扰子帧是根 据所述 CR系统子帧内受到所述授权系统干扰的部分确定出来的。
2、如权利要求 1所述的方法, 其特征在于, 所述第一方式干扰处理 操作还包括:
所述 CR系统网络设备将数据映射到所述 CR系统子帧内未受到所 述授权系统干扰的可用资源位置。
3、 如权利要求 2所述的方法, 其特征在于, 所述 CR系统网络设备 将指定信道的数据映射到所述 CR系统子帧内未受到所述授权系统干扰 的可用资源位置。
4、 如权利要求 3所述的方法, 其特征在于, 在长期演进 LTE系统 中, 所述指定信道包括物理下行共享信道 PDSCH。
5、如权利要求 1所述的方法, 其特征在于, 所述第一方式干扰处理 操作还包括: 所述 CR系统网络设备放弃接收所述 CR系统子帧内受到 所述授权系统干扰的部分所承载的数据; 所述第二方式干扰处理操作还包括: 所述 CR系统网络设备放弃接 收所述强干扰子帧。
6、 如权利要求 1所述的方法, 其特征在于, 所述强干扰子帧包括: 如果所述 CR系统子帧内受到所述授权系统干扰的部分承载关键信 道和 /或关键信号, 则确定所述 CR系统子帧为所述强干扰子帧。
7、 如权利要求 6所述的方法, 其特征在于, 在 LTE系统中, 所述 关键信道包括以下之一或组合:
主同步信号或 /和辅同步信号;
下行参考信号;
上行参考信号;
所述关键信道包括以下之一或组合:
广播信道 PBCH;
物理下行控制信道 PDCCH;
物理混合自动重传请求 HARQ指示信道 PHICH;
物理控制格式指示信道 PCFICH;
物理上行控制信道 PUCCH。
8、 如权利要求 1所述的方法, 其特征在于, 所述 CR系统网络设备 根据所述 CR系统子帧内受到所述授权系统干扰的部分进行干扰处理包 括:
所述 CR系统网络设备在确定所述授权系统在当前工作频点上出现 或即将出现, 或者所述授权系统的干扰超过设定门限时, 根据所述 CR 系统子帧内受到所述授权系统干扰的部分进行所述干扰处理。
9、 如权利要求 1所述的方法, 其特征在于, 所述方法还包括: 所述 CR系统网络设备在获取到所述授权系统的信号发射参数后, 将所述授权系统的信号发射参数通知给小区内的至少一个终端; 所述 CR系统网络设备在确定所述授权系统在当前工作频点上出现 或即将出现, 或者所述授权系统的干扰超过设定门限时, 向所述小区内 的至少一个终端发送干扰处理命令, 所述干扰处理命令指示所述至少一 个终端根据所述 CR系统子帧内受到所述授权系统干扰的部分进行所述 干扰处理;
或者, 所述方法还包括:
所述 CR系统网络设备获取到所述授权系统的信号发射参数后, 在 确定所述授权系统在当前工作频点上出现或即将出现, 或者授权系统的 干扰超过设定门限时, 向小区内的至少一个终端发送干扰处理命令, 所 述干扰处理命令用于指示所述至少一个终端根据所述 CR系统子帧内受 到所述授权系统干扰的部分进行所述干扰处理; 所述干扰处理命令中至 少包括所述 CR系统网络设备获取到的所述授权系统的信号发射参数。
10、 如权利要求 9所述的方法, 其特征在于, 所述 CR系统网络设 备通过广播消息, 将获取到的所述授权系统的信号发射参数通知给所述 小区内的至少一个终端。
11、 如权利要求 10所述的方法, 其特征在于, 在 LTE系统中, 所 述授权系统的信号发射参数承载于广播消息中的系统信息块 SIB1或 /和 SIB2中, 或承载于扩展的系统信息块中。
12、 如权利要求 9所述的方法, 其特征在于, 所述干扰处理命令中 进一步包含干扰处理生效时间, 用于指示所述至少一个终端在所述干扰 处理生效时间到达时, 根据所述 CR系统子帧内受到所述授权系统干扰 的部分进行干扰处理;
所述 CR系统网络设备在所述干扰处理生效时间所指示的时间达到 时, 根据所述 CR系统子帧内受到所述授权系统干扰的部分进行干扰处 理。
13、 如权利要求 9所述的方法, 其特征在于, 所述干扰处理命令中 进一步包含干扰处理持续时间, 用于指示所述至少一个终端在从开始进 行所述干扰处理到所述干扰处理持续时间所指示的时间长度到达时停 止进行所述干扰处理; 所述干扰处理持续时间所指示的时间长度不小于 所述授权系统的信号发射持续时间长度;
所述方法进一步包括: 所述 CR系统网络设备在开始进行所述干扰 处理后开始计时, 当计时时长达到所述干扰处理持续时间所指示的时间 长度后, 停止进行所述干扰处理。
14、 如权利要求 9所述的方法, 其特征在于, 所述 CR系统网络设 备通过广播消息或专用信令发送所述干扰处理命令。
15、 如权利要求 14所述的方法, 其特征在于, 所述 CR系统网络设 备通过专用信令发送所述干扰处理命令时, 所述干扰处理命令承载于无 线资源控制 RRC信令或媒体接入控制 MAC层或物理层信令。
16、 如权利要求 1所述的方法, 其特征在于, 所述信号发射参数至 少包括:
所述授权系统的信号周期长度;
所述授权系统的每个信号周期内, 信号发射持续时间长度; 所述授权系统相对于所述 CR系统的发射开始时间偏移。
17、如权利要求 16所述的方法, 其特征在于, 所述信号发射参数进 一步包括: 授权系统的信号发射持续时间长度;
所述方法进一步包括: 所述 CR系统网络设备在开始进行所述干扰 处理后开始计时, 当计时时长达到所述授权系统的信号发射持续时间长 度时, 停止进行所述干扰处理。
18、 一种认知无线电 CR系统干扰处理方法, 其特征在于, 所述方 法包括: CR系统终端设备获取授权系统的信号发射参数;
所述 CR 系统终端设备根据所述授权系统的信号发射参数确定 CR 系统子帧内受到所述授权系统干扰的部分;
所述 CR系统终端设备根据所述 CR系统子帧内受到所述授权系统 干扰的部分进行干扰处理; 所述干扰处理包括第一方式干扰处理操作或 第二方式干扰处理操作 ,所述第一方式干扰处理操作至少包括在所述 CR 系统子帧内受到所述授权系统干扰的部分停止发送信号; 所述第二方式 干扰处理操作包括停止强干扰子帧的发送, 其中, 所述强干扰子帧是根 据所述 CR系统子帧内受到所述授权系统干扰的部分确定出来的。
19、如权利要求 18所述的方法, 其特征在于, 所述第一方式干扰处 理操作还包括:
所述 CR系统终端设备将数据映射到所述 CR系统子帧内未受到所 述授权系统干扰的可用资源位置。
20、 如权利要求 19所述的方法, 其特征在于, 所述 CR系统终端设 备将指定信道的数据映射到所述 CR系统子帧内未受到所述授权系统干 扰的可用资源位置。
21、 如权利要求 20所述的方法, 其特征在于, 在长期演进 LTE系 统中, 所述指定信道包括物理上行共享信道 PUSCH。
22、如权利要求 18所述的方法, 其特征在于, 所述第一方式干扰处 理操作还包括: 所述 CR系统终端设备放弃接收所述 CR系统子帧内受 到所述授权系统干扰的部分所承载的数据;
所述第二方式干扰处理操作还包括: 所述 CR系统终端设备放弃接 收所述强干扰子帧。
23、如权利要求 18所述的方法,其特征在于,所述强干扰子帧包括: 如果所述 CR系统子帧内受到所述授权系统干扰的部分承载关键信 道和 /或关键信号, 则确定所述 CR系统子帧为所述强干扰子帧。
24、 如权利要求 23所述的方法, 其特征在于, 在 LTE系统中, 所 述关键信道包括以下之一或组合:
主同步信号或 /和辅同步信号;
下行参考信号;
上行参考信号;
所述关键信道包括以下之一或组合:
广播信道 PBCH;
物理下行控制信道 PDCCH;
物理混合自动重传请求 HARQ指示信道 PHICH;
物理控制格式指示信道 PCFICH;
物理上行控制信道 PUCCH。
25、 如权利要求 18所述的方法, 其特征在于, 所述 CR系统终端设 备根据所述 CR系统子帧内受到所述授权系统干扰的部分进行干扰处理 包括:
当接收到的 CR系统网络设备发送的干扰处理命令时, 所述 CR系 统终端设备进行干扰处理; 其中, 所述干扰处理命令是所述 CR系统网 络设备在确定所述授权系统在当前工作频点上出现或即将出现, 或者授 权系统的干扰超过设定门限时发送的。
26、 如权利要求 25所述的方法, 其特征在于, 所述 CR系统终端设 备获取授权系统的信号发射参数包括:
所述 CR系统终端设备接收所述干扰处理命令, 所述干扰处理命令 中包含所述授权系统的信号发射参数; 或者,
所述 CR系统终端设备在接收到所述干扰处理命令之前接收到所述 CR 系统网络设备发送的通知, 所述通知中包含所述授权系统的信号发 射参数。
27、如权利要求 25所述的方法, 其特征在于, 所述干扰处理命令承 载于广播消息。
28、 如权利要求 27所述的方法, 其特征在于, 在 LTE系统中, 所 述授权系统的信号发射参数承载于广播消息中的系统信息块 SIB1或 /和 SIB2中, 或承载在扩展的系统信息块中。
29、如权利要求 25所述的方法, 其特征在于, 所述干扰处理命令中 进一步包含干扰处理生效时间;
所述 CR系统终端设备在所述干扰处理生效时间所指示的时间达到 时, 根据所述 CR系统子帧内受到所述授权系统干扰的部分进行干扰处 理。
30、如权利要求 25所述的方法, 其特征在于, 所述干扰处理命令中 进一步包含干扰处理持续时间, 所述干扰处理持续时间所指示的时间长 度不小于所述授权系统的信号发射持续时间长度;
所述方法进一步包括: 所述 CR系统终端设备在开始进行所述干扰 处理后开始计时, 当计时时长达到所述干扰处理持续时间所指示的时间 长度后, 停止进行所述干扰处理。
31、 如权利要求 25所述的方法, 其特征在于, 所述 CR系统终端设 备通过广播消息或专用信令接收所述干扰处理命令。
32、 如权利要求 31所述的方法, 其特征在于, 所述 CR系统终端设 备通过专用信令接收所述干扰处理命令时, 所述干扰处理命令承载于无 线资源控制 RRC信令或媒体接入控制 MAC层或物理层信令。
33、如权利要求 18所述的方法, 其特征在于, 所述信号发射参数至 少包括:
所述授权系统的信号周期长度; 所述授权系统的每个信号周期内, 信号发射持续时间长度; 所述授权系统相对于所述 CR系统的发射开始时间偏移。
34、如权利要求 33所述的方法, 其特征在于, 所述信号发射参数进 一步包括: 授权系统的信号发射持续时间长度;
所述方法进一步包括: 所述 CR系统终端设备在开始进行所述干扰 处理后开始计时, 当计时时长达到所述授权系统的信号发射持续时间长 度时, 停止进行所述干扰处理。
35、 一种认知无线电 CR系统网络设备, 其特征在于, 包括: 获取模块, 用于获取授权系统的信号发射参数;
确定模块, 用于根据所述授权系统的信号发射参数确定 CR系统子 帧内受到所述授权系统干扰的部分;
处理模块, 用于根据所述 CR系统子帧内受到所述授权系统干扰的 部分进行干扰处理; 所述干扰处理包括第一方式干扰处理操作或第二方 式干扰处理操作; 所述第一方式干扰处理操作至少包括在所述 CR系统 子帧内受到所述授权系统干扰的部分停止发送信号; 所述第二方式干扰 处理操作包括停止强干扰子帧的发送, 其中, 所述强干扰子帧是根据所 述 CR系统子帧内受到所述授权系统干扰的部分确定出来的。
36、如权利要求 35所述的设备, 其特征在于, 所述处理模块所采用 的第一方式干扰处理操作还包括: 将数据映射到所述 CR系统子帧内未 受到所述授权系统干扰的可用资源位置。
37、如权利要求 35所述的设备, 其特征在于, 所述处理模块采用的 所述第一方式干扰处理操作还包括: 放弃接收所述 CR系统子帧内受到 所述授权系统干扰的部分所承载的数据; 所述处理模块采用的所述第二 方式干扰处理操作还包括: 放弃接收所述强干扰子帧。
38、如权利要求 35所述的设备, 其特征在于, 所述确定模块具体用 于, 如果所述 CR系统子帧内受到所述授权系统干扰的部分承载关键信 道和 /或关键信号, 则确定所述 CR系统子帧为所述强干扰子帧。
39、如权利要求 35所述的设备, 其特征在于, 所述处理模块具体用 于, 在确定所述授权系统在当前工作频点上出现或即将出现, 或者所述 授权系统的干扰超过设定门限时, 根据所述 CR系统子帧内受到所述授 权系统干扰的部分进行所述干扰处理。
40、如权利要求 35所述的设备,其特征在于,进一步包括通知模块; 所述通知模块, 用于在所述获取模块获取到所述授权系统的信号发 射参数后, 将所述授权系统的信号发射参数通知给小区内的至少一个终 端; 以及, 在确定所述授权系统在当前工作频点上出现或即将出现, 或 者所述授权系统的干扰超过设定门限时, 向所述小区内的至少一个终端 发送干扰处理命令, 用于指示所述至少一个终端根据所述 CR系统子帧 内受到所述授权系统干扰的部分进行所述干扰处理;
或者, 所述通知模块用于, 在所述获取模块获取到所述授权系统的 信号发射参数后, 在确定授权系统在当前工作频点上出现或即将出现, 或者授权系统的干扰超过设定门限时, 向小区内的至少一个终端发送干 扰处理命令, 用于指示终端根据所述 CR系统子帧内受到所述授权系统 干扰的部分进行所述干扰处理; 所述干扰处理命令中至少包括所述获取 模块获取到的所述授权系统的信号发射参数。
41、如权利要求 35所述的设备, 其特征在于, 所述信号发射参数至 少包括:
所述授权系统的信号周期长度;
所述授权系统的每个信号周期内, 信号发射持续时间长度; 所述授权系统相对于所述 CR系统的发射开始时间偏移。
42、如权利要求 41所述的设备, 其特征在于, 所述信号发射参数进 一步包括: 授权系统的信号发射持续时间长度;
所述处理模块还用于, 在开始进行所述干扰处理后开始计时, 当计 时时长达到所述授权系统的信号发射持续时间长度时, 停止进行所述干 扰处理。
43、 一种认知无线电 CR系统终端设备, 其特征在于, 包括: 获取模块, 用于获取授权系统的信号发射参数;
确定模块,用于根据获取到的所述授权系统的信号发射参数确定 CR 系统子帧内受到所述授权系统干扰的部分;
处理模块, 用于根据所述 CR系统子帧内受到所述授权系统干扰的 部分进行干扰处理; 所述干扰处理包括第一方式干扰处理操作或第二方 式干扰处理操作; 所述第一方式干扰处理操作至少包括在所述 CR系统 子帧内受到所述授权系统干扰的部分停止发送信号; 所述第二方式干扰 处理操作包括停止强干扰子帧的发送, 其中, 所述强干扰子帧是根据所 述 CR系统子帧内受到所述授权系统干扰的部分确定出来的。
44、如权利要求 43所述的设备, 其特征在于, 所述处理模块采用的 所述第一方式干扰处理操作还包括: 将数据映射到所述 CR系统子帧内 未受到所述授权系统干扰的可用资源位置。
45、如权利要求 43所述的设备, 其特征在于, 所述处理模块采用的 所述第一方式干扰处理操作还包括: 放弃接收所述 CR系统子帧内受到 所述授权系统干扰的部分所承载的数据;
所述处理模块采用的所述第二方式干扰处理操作还包括: 放弃接收 所述强干扰子帧。
46、如权利要求 43所述的设备, 其特征在于, 所述确定模块具体用 于, 如果所述 CR系统子帧内受到授权系统干扰的部分承载关键信道和 / 或关键信号, 则确定所述 CR系统子帧为所述强干扰子帧。
47、如权利要求 43所述的设备, 其特征在于, 所述处理模块具体用 于, 根据接收到的所述 CR系统网络设备发送的干扰处理命令进行所述 干扰处理; 其中, 所述干扰处理命令是所述 CR系统网络设备在确定授 权系统在当前工作频点上出现或即将出现, 或者授权系统的干扰超过设 定门限时发送的。
48、如权利要求 43所述的设备, 其特征在于, 所述信号发射参数至 少包括:
所述授权系统的信号周期长度;
所述授权系统的每个信号周期内, 信号发射持续时间长度; 所述授权系统相对于所述 CR系统的发射开始时间偏移。
49、如权利要求 48所述的设备, 其特征在于, 所述信号发射参数还 包括: 授权系统的信号发射持续时间长度;
所述处理模块还用于, 在开始进行所述干扰处理后开始计时, 当计 时时长达到所述授权系统的信号发射持续时间长度时, 停止进行所述干 扰处理。
PCT/CN2014/072533 2013-02-27 2014-02-26 认知无线电系统干扰处理方法和设备 WO2014131346A1 (zh)

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CN102843697A (zh) * 2011-06-22 2012-12-26 电信科学技术研究院 异系统间频谱共享情况下的干扰抑制方法和设备
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CN102843697A (zh) * 2011-06-22 2012-12-26 电信科学技术研究院 异系统间频谱共享情况下的干扰抑制方法和设备
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