WO2015180028A1 - 干扰消除装置和方法 - Google Patents

干扰消除装置和方法 Download PDF

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Publication number
WO2015180028A1
WO2015180028A1 PCT/CN2014/078487 CN2014078487W WO2015180028A1 WO 2015180028 A1 WO2015180028 A1 WO 2015180028A1 CN 2014078487 W CN2014078487 W CN 2014078487W WO 2015180028 A1 WO2015180028 A1 WO 2015180028A1
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WO
WIPO (PCT)
Prior art keywords
interference
base station
information
signal
terminal
Prior art date
Application number
PCT/CN2014/078487
Other languages
English (en)
French (fr)
Inventor
周国华
邓天乐
王君
贾晓倩
Original Assignee
华为技术有限公司
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 华为技术有限公司 filed Critical 华为技术有限公司
Priority to CN201480036761.0A priority Critical patent/CN105340231B/zh
Priority to PCT/CN2014/078487 priority patent/WO2015180028A1/zh
Publication of WO2015180028A1 publication Critical patent/WO2015180028A1/zh

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00Baseband systems
    • H04L25/02Details ; arrangements for supplying electrical power along data transmission lines
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00Baseband systems
    • H04L25/02Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/03Shaping networks in transmitter or receiver, e.g. adaptive shaping networks

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to an interference cancellation apparatus and method. Background technique
  • spectrum resources can be shared between the two systems. For example, two base stations in the same system or two systems can share spectrum resources. However, in the process of sharing spectrum resources, the two systems may cause interference with each other, affecting system capacity and system performance.
  • the first base station sends the interference information of the first base station to the second base station, and the second base station receives the interference information, when the second base station receives the interference information.
  • the second base station receives the interference information, when the second base station receives the interference information.
  • the original signal and the interference signal are demodulated, which requires the original signal and the interference signal to be synchronized in time, that is, the first base station and the second base station are required to be synchronized in time.
  • the first base station and the second base station are not synchronized in time, interference cancellation will not be possible. Therefore, there is a need to provide an interference cancellation method that enables interference cancellation when the first base station and the second base station are not synchronized in time.
  • the embodiment of the present invention provides An interference cancellation device and method are provided.
  • the technical solution is as follows:
  • an interference cancellation device comprising:
  • An interference information acquiring module configured to acquire interference information of a specified base station, where the interference information is used to cancel interference of the designated base station;
  • a backup module configured to back up the transmission signal to obtain a first signal when the transmission signal is received, without performing demodulation on the transmission signal
  • a demodulation and reconstruction module configured to perform demodulation and reconstruction on the interference component in the first signal according to the interference information, to obtain an interference signal
  • An interference cancellation module configured to remove the interference signal from the first signal to obtain a second signal.
  • the interference information acquiring module is located at a serving base station; or
  • the interference information acquiring module is located at the terminal, and the interference information acquiring module is configured to receive the interference information sent by the service base station, where the interference information is sent by the designated base station to the serving base station; or
  • the interference information acquiring module is located at the terminal.
  • the interference information is sent by the designated base station to the serving base station by calling an interface between the designated base station and the serving base station; or
  • the interference information is sent by the designated base station to the serving base station by using a first control node between the designated base station and the serving base station; or
  • the interference information is sent by the second control node to the serving base station, and the second control node is configured to schedule resources of the designated base station.
  • a third possible implementation manner of the first aspect if the terminal performs interference cancellation on the received downlink transmission signal, when the designated base station Supporting different communication protocols with the serving base station, and the designated base station belongs to a universal mobile communication system
  • the interference information includes primary scrambling code information of the interfering cell, where the interfering cell is a cell covered by the designated base station; or
  • the interference information includes primary scrambling code information of the interfering cell, physical broadcast channel PBCH scheduling information, and synchronization channel information; or
  • the interference information includes primary scrambling code information, PBCH scheduling information, synchronization channel information, and UMTS data scheduling information of the interfering cell.
  • a fourth possible implementation manner of the first aspect if the received downlink transmission signal is interfered by the terminal, when the designated base station and the service are The base station supports different communication protocols, and when the designated base station belongs to the Long Term Evolution (LTE) technology system,
  • LTE Long Term Evolution
  • the interference information includes any one of distribution information of a common reference signal CRS of an interfering cell and a configuration information of an antenna port, where the interfering cell is a cell covered by the designated base station; or, the interference information includes the interference Any one of the CRS distribution information of the cell and the configuration information of the antenna port, the PBCH scheduling information, and the synchronization channel information; or
  • the interference information includes any one of distribution information of CRS of the interfering cell and configuration information of an antenna port, PBCH scheduling information, synchronization channel information, and LTE data scheduling information.
  • a fifth possible implementation manner of the first aspect if the received uplink transmission signal is interfered by the serving base station, when the designated base station and the The serving base station supports different communication protocols, and when the designated base station belongs to the UMTS system,
  • the interference information includes a dedicated physical control channel DPCCH configuration information and an encoding format information of the interfering terminal, where the interfering terminal is a terminal that performs uplink communication with the designated base station; or
  • the interference information includes DPCCH configuration information, encoding format information, and UMTS data scheduling information of the interfering terminal.
  • the interference information includes pilot interference configuration information, scrambling information, and time-frequency domain distribution information of the interference terminal, where the interference terminal is a terminal that specifies a base station to perform uplink communication; or
  • the interference information includes pilot interference configuration information, scrambling information, time-frequency domain distribution information, and LTE data scheduling information of the interference terminal.
  • the device further includes: an interference signal holding module, configured to save the interference signal;
  • the interference cancellation module is configured to perform interference cancellation on the received transmission signal according to the stored interference signal when the transmission signal is received again but the interference information after the change of the designated base station is not acquired.
  • an interference cancellation method is provided, where the method includes:
  • interference information of the designated base station where the interference information is used to cancel interference of the designated base station; when receiving the transmission signal, backing up the transmission signal without performing demodulation on the transmission signal, Obtaining a first signal;
  • the acquiring the interference information of the designated base station includes:
  • the serving base station receives the interference information of the designated base station; or
  • the interference information is sent by the designated base station to the serving base station by calling an interface between the designated base station and the serving base station; or
  • the interference information is sent by the designated base station to the serving base station by using a first control node between the designated base station and the serving base station; or
  • the interference information is sent by the second control node to the serving base station, and the second control node is configured to schedule resources of the designated base station.
  • a third possible implementation manner of the second aspect if the received downlink transmission signal is interfered by the terminal, when the designated base station and the service are The base station supports different communication protocols, and the designated base station belongs to a universal mobile communication system
  • the interference information includes primary scrambling code information of the interfering cell, where the interfering cell is a cell covered by the designated base station; or
  • the interference information includes primary scrambling code information of the interfering cell, physical broadcast channel PBCH scheduling information, and synchronization channel information; or
  • the interference information includes primary scrambling code information, PBCH scheduling information, synchronization channel information, and UMTS data scheduling information of the interfering cell.
  • a fourth possible implementation manner of the second aspect if the received downlink transmission signal is interfered by the terminal, when the designated base station and the service are The base station supports different communication protocols, and when the designated base station belongs to the Long Term Evolution (LTE) technology system,
  • LTE Long Term Evolution
  • the interference information includes any one of distribution information of a common reference signal CRS of an interfering cell and a configuration information of an antenna port, where the interfering cell is a cell covered by the designated base station; or, the interference information includes the interference Distribution information of the CRS of the cell and the configuration letter of the antenna port Any one of the information, PBCH scheduling information and synchronization channel information; or
  • the interference information includes any one of distribution information of CRS of the interfering cell and configuration information of an antenna port, PBCH scheduling information, synchronization channel information, and LTE data scheduling information.
  • a fifth possible implementation manner of the second aspect if the received uplink transmission signal is interfered by the serving base station, when the designated base station and the The serving base station supports different communication protocols, and when the designated base station belongs to the UMTS system,
  • the interference information includes a dedicated physical control channel DPCCH configuration information and an encoding format information of the interfering terminal, where the interfering terminal is a terminal that performs uplink communication with the designated base station; or
  • the interference information includes DPCCH configuration information, encoding format information, and UMTS data scheduling information of the interfering terminal.
  • the interference information includes pilot interference configuration information, scrambling information, and time-frequency domain distribution information of the interference terminal, where the interference terminal is a terminal that specifies a base station to perform uplink communication; or
  • the interference information includes pilot interference configuration information, scrambling information, time-frequency domain distribution information, and LTE data scheduling information of the interference terminal.
  • the disassembling and reconstructing the interference part in the first signal according to the interference information, after obtaining the interference signal also includes:
  • the beneficial effects of the technical solutions provided by the embodiments of the present invention are: When the interference caused by the designated base station is removed, the interference information of the designated base station is obtained. When the transmission signal is received, the transmission signal is first backed up without demodulating the transmission signal, and according to the interference information, The interference part in the backup signal is demodulated and reconstructed to obtain an interference signal, and then the interference signal is eliminated. Since the transmission signal has been backed up, there is no need to reconstruct the interference signal while demodulating the transmission signal, and there is no need to synchronize with the designated base station in time, which improves flexibility.
  • FIG. 1 is a schematic structural diagram of an interference cancellation system according to an embodiment of the present invention.
  • FIG. 3 is a flowchart of an interference cancellation method according to an embodiment of the present invention.
  • FIG. 5 is a schematic structural diagram of an interference cancellation apparatus according to an embodiment of the present invention.
  • FIG. 6 is a schematic structural diagram of an interference cancellation device according to an embodiment of the present invention. detailed description
  • FIG. 1 is a schematic structural diagram of an interference cancellation system according to an embodiment of the present invention.
  • the interference cancellation system includes a designated base station, a serving base station, and a terminal.
  • the terminal is located in the coverage of the serving base station, and the serving base station is used to provide services for the terminal, and performs uplink communication with the terminal. Downlink communication.
  • the serving base station shares the spectrum resource with the designated base station
  • the serving base station sends a downlink transmission signal to the terminal
  • the designated base station may cause interference to the downlink transmission signal
  • the terminal is configured to acquire interference information of the designated base station, Interference cancellation is performed on the downlink transmission signal according to the interference information.
  • FIG. 2 is a flowchart of an interference cancellation method according to an embodiment of the present invention. Referring to FIG. 2, the method includes:
  • the transmission signal When receiving the transmission signal, if the transmission signal is not demodulated, the transmission signal is backed up to obtain a first signal.
  • the method provided by the embodiment of the present invention obtains the interference information of the designated base station by canceling the interference caused by the designated base station, and when the transmission signal is received, the transmission signal is first transmitted without demodulating the transmission signal. Performing backup, according to the interference information, demodulating and reconstructing the interference part in the backup signal to obtain an interference signal, and then eliminating the interference signal. Since the transmission signal has been backed up, there is no need to reconstruct the interference signal while demodulating the transmission signal, and there is no need to synchronize with the designated base station in time, which improves flexibility.
  • the obtaining the interference information of the designated base station includes:
  • the serving base station receives the interference information of the designated base station; or
  • the terminal When the terminal supports receiving information sent by the designated base station, the terminal receives the designated base station to send The dry 4 especially information.
  • the serving base station when the serving base station receives the interference information of the designated base station,
  • the interference information is sent by the designated base station to the serving base station by calling an interface between the designated base station and the serving base station; or
  • the interference information is sent by the designated base station to the serving base station through a first control node between the designated base station and the serving base station;
  • the interference information is sent by the second control node to the serving base station, and the second control node is configured to schedule resources of the designated base station.
  • the terminal performs interference cancellation on the received downlink transmission signal, when the designated base station and the serving base station support different communication protocols, and the designated base station belongs to a UMTS (Universal Mobile Telecommunications System) Time,
  • UMTS Universal Mobile Telecommunications System
  • the interference information includes primary scrambling code information of the interfering cell, where the interfering cell is a cell covered by the designated base station; or
  • the interference information includes primary scrambling code information, PBCH (Physical Broadcast Channel) scheduling information, and synchronization channel information of the interference interference area; or
  • the interference information includes primary scrambling code information, PBCH scheduling information, synchronization channel information, and UMTS data scheduling information of the interfering cell.
  • the terminal performs interference cancellation on the received downlink transmission signal, when the designated base station and the serving base station support different communication protocols, and the designated base station belongs to the LTE (Long Term Evolution) system ,
  • the interference information includes any one of distribution information of CRS (Cell-specific Reference Signals) of the interfering cell and configuration information of the antenna port, where the interfering cell is a cell covered by the designated base station; or
  • the interference information includes any one of CRS distribution information of the interfering cell and configuration information of the antenna port, PBCH scheduling information, and synchronization channel information; or
  • the interference information includes any one of CRS distribution information of the interfering cell and configuration information of the antenna port, PBCH scheduling information, synchronization channel information, and LTE data scheduling information.
  • the serving base station performs interference cancellation on the received uplink transmission signal, when the designated base station and the serving base station support different communication protocols, and the designated base station belongs to the UMTS system,
  • the interference information includes a DPCCH (Dedicated Physical Control Channel) configuration information and an encoding format information of the interfering terminal, where the interfering terminal is a terminal that performs uplink communication with the designated base station; or
  • DPCCH Dedicated Physical Control Channel
  • the dry information includes the DPCCH configuration information, the encoding format information, and the UMTS data scheduling information of the trunk.
  • the interference information includes the interference terminal. Pilot interference configuration information, scrambling information, and time-frequency domain distribution information, where the interfering terminal is a terminal that performs uplink communication with the designated base station; or
  • the interference information includes pilot interference configuration information, scrambling information, time-frequency domain distribution information, and LTE data scheduling information of the interference terminal.
  • the method further includes:
  • interference cancellation is performed on the currently received transmission signal according to the saved interference signal.
  • FIG. 3 is a flowchart of an interference cancellation method according to an embodiment of the present invention.
  • the interaction entity is a designated base station, a serving base station, and a terminal. End, see Figure 3, the method includes:
  • the designated base station sends interference information of the designated base station to the serving base station.
  • the terminal is located in a coverage area of the serving base station, and the serving base station provides a service for the terminal.
  • the serving base station may share spectrum resources with the designated base station.
  • the serving base station sends a downlink transmission signal to the terminal, the downlink transmission signal may be interfered by the designated base station. Therefore, when receiving the downlink transmission signal, the terminal needs to cancel the interference of the designated base station.
  • the designated base station sends interference information of the designated base station to the serving base station, so that the terminal subsequently performs interference cancellation according to the interference information.
  • the interference information is used to cancel the interference of the designated base station, and may include the pilot configuration information, the information transmission format, the code rate, the coding mode, and the like of the specified base station, which are not limited in this embodiment of the present invention.
  • the step 301 can include any one of the following steps 301a-301b:
  • the designated base station sends the interference information to the serving base station by calling an interface between the designated base station and the serving base station.
  • the interface may be an interface between an eNB (Evolved Node B) in the LTE system and a radio network controller in the UMTS system, or an eNB in the LTE system and an NB in the UMTS system (Node B, Node B)
  • eNB evolved Node B
  • Node B Node B
  • the embodiment of the present invention does not limit this.
  • the designated base station sends the interference information to a first control node between the designated base station and the serving base station, and the first control node forwards the interference information to the serving base station when receiving the interference information.
  • the first control node may be an SRC (Single Resource Controller) or other node, which is not limited in this embodiment of the present invention.
  • step 301 may be replaced by the following step 301c:
  • the second control node sends the interference information of the designated base station to the serving base station.
  • the second control node is configured to schedule the resource of the designated base station, and the second control node may obtain the interference information of the designated base station and send the interference information to the serving base station.
  • the second control node can also be used for The resource of the serving base station is scheduled, which is not limited in this embodiment of the present invention.
  • the interference information is transmitted to the serving base station by the designated base station, and the transmission of the interference information on the ground interface is realized. Further, in the above steps 301a, 301b, and 301c, only the example of the transmission mode of the interference information is given, but the limitation of the transmission mode is not formed.
  • the terminal performs interference cancellation on the received downlink transmission signal, and when the type of interference to be eliminated is different, the specific content of the interference information is also different.
  • the interference information may include the following three pieces of information:
  • (1-3) UMTS data scheduling information, such as data scheduling format or encoding mode.
  • the primary scrambling code information of the interfering cell is used to cancel pilot interference of the UMTS system, where the PBCH scheduling information and the synchronization channel information are used to cancel common channel interference of the UMTS system, where the UMTS data scheduling information is used to eliminate the interference.
  • Data channel interference for UMTS systems. when only the pilot interference of the UMTS system is eliminated, the interference information includes primary scrambling code information of the interfering cell; further, when the common channel interference of the UMTS system is also to be eliminated, the interference information includes the interfering cell.
  • the interference information includes primary scrambling code information, PBCH scheduling information, and synchronization channel of the interfering cell Information and UMTS data scheduling information.
  • the interference information may include the following three pieces of information:
  • LTE data scheduling information such as data scheduling format or encoding mode. Any one of the CRS distribution information of the interfering cell and the configuration information of the antenna port is used to cancel the pilot interference of the LTE system, and the PBCH scheduling information and the synchronization channel information are used to cancel the common channel interference of the LTE system.
  • the LTE data scheduling information is used to cancel data channel interference of the LTE system.
  • the interference information includes any one of distribution information of the CRS of the interfering cell and configuration information of the antenna port; further, when the common channel of the LTE system is also to be eliminated
  • the interference information includes any one of the CRS distribution information of the interfering cell and the configuration information of the antenna port, the PBCH scheduling information, and the synchronization channel information.
  • the data channel interference of the LTE system is also to be eliminated
  • the interference information includes any one of distribution information of the CRS of the interfering cell and configuration information of the antenna port, PBCH scheduling information, synchronization channel information, and LTE data scheduling information.
  • the interference information of the data channel often changes, when the data channel interference is eliminated, the delay and frequency of the information exchanged between the designated base station and the serving base station, and the processing capability of the terminal are required. If the data is high, the serving base station and the designated base station may not share the data channel, and the two data channels are time-staggered to avoid interference of the data channel and reduce system complexity. Accordingly, the interference information does not need to be included. Data scheduling information. It should be further noted that, in the foregoing optional manner, only an example of interference information corresponding to different types of interference when the serving base station and the designated base station support different communication protocols is given, but the interference is not formed. Information is limited.
  • the serving base station When the serving base station receives the interference information, forward the interference information to the terminal.
  • the serving base station In the downlink communication process, in order to eliminate interference, the serving base station sends the interference information to the terminal, and the interference information is transmitted in the air interface, and the terminal performs interference cancellation on the received downlink transmission signal according to the interference information.
  • the serving base station may send the interference information to the terminal according to an RRC (Radio Resource Control) protocol, or the serving base station sends the interference information while sending the downlink control information to the terminal, or The serving base station sends the downlink scheduling information to the terminal, and sends the interference information.
  • RRC Radio Resource Control
  • the specific manner in which the serving base station sends the interference information to the terminal is not limited. It should be noted that, in the foregoing steps 301 and 302, the designated base station sends the interference information to the serving base station, and the serving base station sends the interference information to the terminal, as an example, when the interference information is received.
  • the terminal may be configured with two receivers, or the serving base station and the designated base station may be configured on the same physical entity or logical entity. At this time, the terminal supports receiving the sent by the designated base station. Information, the designated base station can directly send the interference information to the terminal without sending through the serving base station.
  • the terminal When the terminal receives the interference information, save the interference information.
  • the terminal saves the interference information to perform interference cancellation based on the interference information.
  • the terminal receives the downlink transmission signal, if the downlink transmission signal is not demodulated, the downlink transmission signal is backed up to obtain a first signal, and according to the interference information, the first signal is used. The interference portion is demodulated and reconstructed to obtain an interference signal.
  • the terminal when receiving the downlink transmission signal, the terminal does not immediately demodulate the downlink transmission signal, but first backs up the downlink transmission signal to obtain a first signal, according to the interference. Information, demodulating and reconstructing the interference portion of the first signal to obtain an interference signal.
  • the step 301-302 is performed before the step 304, and in the actual application process, the terminal may also receive the downlink transmission signal first, and the downlink transmission signal is received.
  • the first signal is obtained, and the interference information is received, and the interference part in the first signal is demodulated and reconstructed according to the interference information to obtain an interference signal, which is not limited in this embodiment of the present invention.
  • the terminal removes the interference signal from the first signal to obtain a second signal, and demodulates the second signal to obtain a third signal.
  • the interference information is subtracted from the first signal to obtain a second signal, which is a signal that has been cancelled. Thereafter, the terminal may further demodulate the second signal to obtain a third signal.
  • the interference signal may be saved. In the subsequent process, if the interference information remains unchanged, the interference caused by the designated base station is also fixed. Then, when the terminal receives the downlink transmission signal, the terminal can directly perform interference cancellation on the downlink transmission signal according to the saved interference signal, without re-demodulating and reconstructing the interference signal.
  • the terminal saves the interference signal obtained when the interference cancellation is performed last time, and each time the interference information is received, it is determined whether the interference information is the same as the previous received interference information, and if the same, the interference information is indicated. If the terminal does not change again, when the terminal receives the downlink transmission signal again, it directly performs interference cancellation on the downlink transmission signal according to the saved interference signal; if it is different, indicating that the interference information has changed, the terminal receives the downlink transmission signal again.
  • the downlink transmission signal is backed up to obtain a first signal, and according to the changed interference information, the interference part in the first signal is demodulated and reconstructed to obtain an interference signal, and the interference obtained this time is saved. signal.
  • the designated base station may send the changed interference information to the terminal every time the interference information is detected to change, and when the interference information does not change, the interference information is not sent to the terminal. Then, the terminal saves the interference signal every time the interference signal is obtained, and if the terminal receives the downlink transmission signal after receiving another interference information sent by the designated base station, it is not necessary to determine whether the interference information occurs.
  • the change may be performed by performing interference cancellation on the downlink transmission signal directly according to the saved interference signal.
  • the method provided by the embodiment of the present invention obtains the interference information of the designated base station when the terminal cancels the interference caused by the designated base station, and when the downlink transmission signal is received, without demodulating the transmission signal, First, the downlink transmission signal is backed up, and according to the interference information, the interference part in the backup signal is demodulated and reconstructed to obtain an interference signal, and then the interference signal is eliminated. Since the transmission signal has been backed up, it is not necessary to reconstruct the interference signal while demodulating the transmission signal, and there is no need to synchronize with the designated base station in time, which improves flexibility. Further, when the serving base station and the designated base station support different communication protocols, the serving base station and the designated base station can also exchange interference information, thereby achieving interference cancellation between different modes.
  • FIG. 4 is a flowchart of an interference cancellation method according to an embodiment of the present invention.
  • the interaction entity is a designated base station and a serving base station, See Figure 4, the method includes:
  • the designated base station sends interference information to the serving base station.
  • the serving base station may also share spectrum resources with the designated base station, but when the terminal sends an uplink transmission signal to the serving base station, the uplink transmission signal It may be interfered by the terminal served by the designated base station. Therefore, when receiving the uplink transmission signal, the serving base station needs to eliminate interference, and in order to eliminate interference, the designated base station sends interference information to the serving base station.
  • the interference information is used to eliminate the interference of the designated base station, and may include a reference signal format, a code rate, an encoding mode, and the like, which are not limited in this embodiment of the present invention.
  • the specific manner in which the designated base station sends the interference information to the serving base station is similar to the foregoing steps 301a, 301b, and 301c, and details are not described herein again.
  • the serving base station performs interference cancellation on the received uplink transmission signal, and the specific content of the interference information is different when the types of interference to be eliminated are different.
  • the interference information may include the following two pieces of information:
  • the interfering terminal is located in the coverage of the designated base station, and when the interfering terminal sends an uplink transmission signal to the designated base station, it may cause interference to the uplink transmission signal in the UMTS system.
  • the DPCCH configuration information and the encoding format information of the interfering terminal are used to eliminate DPCCH interference of the UMTS system, and the UMTS data scheduling information is used to eliminate data channel interference of the UMTS system.
  • the interference information includes DPCCH configuration information and encoding format information of the interfering terminal; further, when the data channel interference of the UMTS system is also to be eliminated, the interference information includes the Interfering with the terminal's DPCCH configuration information, encoding format information, and UMTS data scheduling information.
  • the interference information may include the following two pieces of information:
  • (4-2) LTE data scheduling information such as data scheduling format or encoding mode.
  • the pilot interference configuration information, the scrambling information, and the time-frequency domain distribution information of the interference terminal are used to cancel pilot interference of the LTE system, and the LTE data scheduling information is used to cancel data channel interference of the LTE system.
  • the interference information includes pilot interference configuration information, scrambling information, and time-frequency domain distribution information of the interference terminal; further, when the data channel of the LTE system is further eliminated
  • the interference information includes pilot interference configuration information of the interference terminal, scrambling information, time-frequency domain distribution information, and LTE data scheduling information.
  • the serving base station When the serving base station receives the interference information, save the interference information.
  • the serving base station receives the uplink transmission signal, if the uplink transmission signal is not demodulated, the uplink transmission signal is backed up to obtain a first signal, and the first signal is obtained according to the interference information. The interference part is demodulated and reconstructed to obtain an interference signal.
  • the serving base station cancels the interference signal from the first signal to obtain a second signal, and demodulates the second signal to obtain a third signal.
  • the method provided by the embodiment of the present invention obtains the interference information of the designated base station when the serving base station cancels the interference caused by the designated base station, and when the uplink transmission signal is received, the transmission signal is not demodulated.
  • the uplink transmission signal is backed up, and according to the interference information, the interference part in the backup signal is demodulated and reconstructed to obtain an interference signal, and then the interference signal is eliminated. Since the transmission signal has been backed up, it is not necessary to reconstruct the interference signal while demodulating the transmission signal, and it is not necessary to synchronize with the designated base station in time, and the interference information can be sent to the terminal in multiple ways, thereby improving Flexibility.
  • FIG. 5 is a schematic structural diagram of an interference cancellation apparatus according to an embodiment of the present invention.
  • the apparatus includes:
  • the interference information acquiring module 501 is configured to acquire interference information of the designated base station, where the interference information is used to cancel interference of the designated base station;
  • the backup module 502 is configured to: when receiving the transmission signal, perform the backup on the premise that the transmission signal is not demodulated, to obtain the first signal;
  • the demodulation and reconstruction module 503 is connected to the interference information acquisition module 501 and the backup module 502, and is configured to demodulate and reconstruct the interference portion in the first signal according to the interference information to obtain an interference signal; the interference cancellation module 504 and The interference information acquiring module 501 is connected to the demodulation and reconstruction module 503, and is configured to cancel the interference signal from the first signal to obtain a second signal.
  • the device provided by the embodiment of the present invention obtains the interference information of the designated base station when the interference caused by the designated base station is removed, and when the transmission signal is received, the transmission signal is first transmitted without demodulating the transmission signal. Performing backup, according to the interference information, demodulating and reconstructing the interference part in the backup signal to obtain an interference signal, and then eliminating the interference signal. Since the transmission signal has been backed up, there is no need to reconstruct the interference signal while demodulating the transmission signal, and there is no need to synchronize with the designated base station in time, which improves flexibility.
  • the interference information acquiring module 501 is located at the serving base station; or
  • the interference information obtaining module 501 is located at the terminal, and the interference information acquiring module 501 is configured to receive the interference information sent by the serving base station, where the interference information is sent by the designated base station to the serving base station; or, when the terminal supports receiving the designated base station, The information of the interference information acquisition module 501 is located at the terminal.
  • the interference information acquiring module 501 is located at the serving base station,
  • the interference information is used by the designated base station to invoke an interface between the designated base station and the serving base station. Sent to the serving base station; or,
  • the interference information is sent by the designated base station to the serving base station through a first control node between the designated base station and the serving base station;
  • the interference information is sent by the second control node to the serving base station, and the second control node is configured to schedule resources of the designated base station.
  • the terminal performs interference cancellation on the received downlink transmission signal, when the designated base station and the serving base station support different communication protocols, and the designated base station belongs to the universal mobile communication system
  • the interference information includes primary scrambling code information of the interfering cell, where the interfering cell is a cell covered by the designated base station; or
  • the interference information includes primary scrambling code information of the interfering cell, physical broadcast channel PBCH scheduling information, and synchronization channel information; or
  • the interference information includes primary scrambling code information, PBCH scheduling information, synchronization channel information, and UMTS data scheduling information of the interfering cell.
  • the terminal performs interference cancellation on the received downlink transmission signal, when the designated base station and the serving base station support different communication protocols, and the designated base station belongs to the Long Term Evolution (LTE) system,
  • LTE Long Term Evolution
  • the interference information includes any one of the distribution information of the common reference signal CRS of the interfering cell and the configuration information of the antenna port, where the interfering cell is a cell covered by the designated base station; or
  • the interference information includes any one of CRS distribution information of the interfering cell and configuration information of the antenna port, PBCH scheduling information, and synchronization channel information; or
  • the interference information includes any one of CRS distribution information of the interfering cell and configuration information of the antenna port, PBCH scheduling information, synchronization channel information, and LTE data scheduling information.
  • the interference information includes a dedicated physical control channel DPCCH configuration information and an encoding format information of the interfering terminal, where the interfering terminal is a terminal that performs uplink communication with the designated base station; or
  • the dry information includes the DPCCH configuration information, the encoding format information, and the UMTS data scheduling information of the trunk.
  • the interference information includes the interference terminal. Pilot interference configuration information, scrambling information, and time-frequency domain distribution information, where the interfering terminal is a terminal that performs uplink communication with the designated base station; or
  • the interference information includes pilot interference configuration information, scrambling information, time-frequency domain distribution information, and LTE data scheduling information of the interference terminal.
  • the device further includes:
  • An interference signal saving module configured to save the interference signal
  • the interference cancellation module is configured to: when the transmission signal is received again, but the interference information after the change of the designated base station is not acquired, the received transmission signal is specifically removed according to the saved interference signal.
  • FIG. 6 is a schematic structural diagram of an interference cancellation device according to an embodiment of the present invention.
  • the device includes:
  • the receiver 601, the transmitter 602, and the memory 603 are respectively connected to the processor 604.
  • the memory 603 stores program code, and the processor 604 is used by the processor 604. Call the program code and do the following:
  • the backup signal is backed up to obtain a first signal
  • the interference signal is cancelled from the first signal to obtain a second signal.
  • the processor 604 is further configured to invoke the program code, and perform the following operations: receiving, by the receiver 601, interference information of the designated base station; or
  • the receiver 601 When receiving the information sent by the designated base station, the receiver 601 receives the interference/speech sent by the designated base station.
  • the interference information is sent by the designated base station to the serving base station by calling an interface between the designated base station and the serving base station; or
  • the interference information is sent by the designated base station to the serving base station through a first control node between the designated base station and the serving base station;
  • the interference information is sent by the second control node to the serving base station, and the second control node is configured to schedule resources of the designated base station.
  • the terminal performs interference cancellation on the received downlink transmission signal, when the designated base station and the serving base station support different communication protocols, and the designated base station belongs to the universal mobile communication system UMTS,
  • the interference information includes primary scrambling code information of the interfering cell, where the interfering cell is a cell covered by the designated base station; or
  • the interference information includes primary scrambling code information of the interfering cell, physical broadcast channel PBCH scheduling information, and synchronization channel information; or
  • the interference information includes primary scrambling code information, PBCH scheduling information, synchronization channel information, and UMTS data scheduling information of the interfering cell.
  • PBCH scheduling information synchronization channel information
  • UMTS data scheduling information of the interfering cell.
  • the terminal performs interference cancellation on the received downlink transmission signal, when the designated base station and the serving base station support different communication protocols, and the designated base station belongs to the Long Term Evolution (LTE) system,
  • LTE Long Term Evolution
  • the interference information includes any one of the distribution information of the common reference signal CRS of the interfering cell and the configuration information of the antenna port, where the interfering cell is a cell covered by the designated base station; or
  • the interference information includes any one of CRS distribution information of the interfering cell and configuration information of the antenna port, PBCH scheduling information, and synchronization channel information; or
  • the interference information includes any one of CRS distribution information of the interfering cell and configuration information of the antenna port, PBCH scheduling information, synchronization channel information, and LTE data scheduling information.
  • the serving base station performs interference cancellation on the received uplink transmission signal, when the designated base station and the serving base station support different communication protocols, and the designated base station belongs to the UMTS system,
  • the interference information includes a dedicated physical control channel DPCCH configuration information and coding format information of the interference terminal, and the interference terminal is a terminal that performs uplink communication with the designated base station; or
  • the dry information includes the DPCCH configuration information, the encoding format information, and the UMTS data scheduling information of the trunk.
  • the interference information includes the interference terminal. Pilot interference configuration information, scrambling information, and time-frequency domain distribution information, where the interfering terminal is a terminal that performs uplink communication with the designated base station; or
  • the interference information includes pilot interference configuration information, scrambling information, time-frequency domain distribution information, and LTE data scheduling information of the interference terminal.
  • processor 604 is further configured to invoke the program code, and perform the following operations:

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Abstract

本发明提供了一种干扰消除装置和方法,其中所述方法包括以下步骤:获取指定基站的干扰信息(201);当接收到传输信号时,在未对该传输信号进行解调的前提下,对该传输信号进行备份,得到第一信号(202);根据该干扰信息,对该第一信号中的干扰部分进行解调和重构,得到干扰信号(203);从该第一信号中消除该干扰信号,得到第二信号(204)。本发明中的服务基站无需与该指定基站在时间上同步,提高了灵活性。

Description

说 明 书 干扰消除装置和方法
技术领域
本发明涉及通信技术领域, 特别涉及一种干扰消除装置和方法。 背景技术
随着通信技术的发展, 用户对频谱资源的需求越来越高, 频谱资源的有限 性问题也日益突出。 为了提高频谱资源利用率, 两个制式之间可以共享频谱资 源, 如同一系统内的两个基站或者两个系统之间都可以共享频谱资源。 但在频 谱资源共享的过程中, 两个制式可能会相互造成干扰, 影响系统容量和系统性 能。
以第一基站对第二基站造成的干扰为例, 为了消除干扰, 该第一基站向该 第二基站发送该第一基站的干扰信息, 该第二基站接收该干扰信息, 当该第二 基站接收到信号时, 对接收到的信号进行解调, 得到指定信号, 并在解调的过 程中, 根据该干扰信息, 重构干扰信号, 再从该指定信号中减去该干扰信号, 即可得到已消除干扰的原始信号。
在解调的过程中, 会解调出原始信号和干扰信号, 这就需要原始信号和干 扰信号在时间上同步, 也即是需要第一基站和第二基站在时间上同步。 而当第 一基站和第二基站在时间上不同步时, 将无法进行干扰消除。 因此, 需要提出 一种干扰消除方法,使得当第一基站和第二基站在时间上不同步时也能够进行 干扰消除。 发明内容
为了在与干扰基站在时间上不同步时能够进行干扰消除, 本发明实施例提 供了一种干扰消除装置和方法。 所述技术方案如下:
第一方面, 提供了一种干扰消除装置, 所述装置包括:
干扰信息获取模块, 用于获取指定基站的干扰信息, 所述干扰信息用于消 除所述指定基站的干扰;
备份模块, 用于当接收到传输信号时, 在未对所述传输信号进行解调的前 提下, 对所述传输信号进行备份, 得到第一信号;
解调重构模块, 用于根据所述干扰信息, 对所述第一信号中的干扰部分进 行解调和重构, 得到干扰信号;
干扰消除模块,用于从所述第一信号中消除所述干扰信号,得到第二信号。 结合第一方面, 在第一方面的第一种可能实现方式中, 所述干扰信息获取 模块位于服务基站; 或,
所述干扰信息获取模块位于终端, 所述干扰信息获取模块用于接收所述服 务基站发送的干扰信息, 所述干扰信息由所述指定基站发送给所述服务基站; 或,
当所述终端支持接收所述指定基站发送的信息时, 所述干扰信息获取模块 位于所述终端。
结合第一方面的第一种可能实现方式,在第一方面的第二种可能实现方式 中, 所述干扰信息获取模块位于所述服务基站时,
所述干扰信息由所述指定基站通过调用所述指定基站与所述服务基站之 间的接口, 发送给所述服务基站; 或,
所述干扰信息由所述指定基站通过所述指定基站与所述服务基站之间的 第一控制节点, 发送给所述服务基站; 或,
所述干扰信息由第二控制节点发送给所述服务基站, 所述第二控制节点用 于调度所述指定基站的资源。
结合第一方面的第一种可能实现方式,在第一方面的第三种可能实现方式 中, 如果由所述终端对接收到的下行传输信号进行干扰消除, 当所述指定基站 和所述服务基站支持不同的通信协议,且所述指定基站属于通用移动通信系统
UMTS时,
所述干扰信息包括干扰小区的主扰码信息, 所述干扰小区为所述指定基站 覆盖的小区; 或者,
所述干扰信息包括所述干扰小区的主扰码信息、物理广播信道 PBCH调度 信息和同步信道信息; 或者,
所述干扰信息包括所述干扰小区的主扰码信息、 PBCH调度信息、 同步信 道信息和 UMTS数据调度信息。
结合第一方面的第一种可能实现方式,在第一方面的第四种可能实现方式 中, 如果由所述终端对接收到的下行传输信号进行干扰消除, 当所述指定基站 和所述服务基站支持不同的通信协议, 且所述指定基站属于长期演进技术 LTE 系统时,
所述干扰信息包括干扰小区的公共参考信号 CRS 的分布信息和天线端口 的配置信息中的任一项, 所述干扰小区为所述指定基站覆盖的小区; 或者, 所述干扰信息包括所述干扰小区的 CRS 的分布信息和天线端口的配置信 息中的任一项、 PBCH调度信息和同步信道信息; 或者,
所述干扰信息包括所述干扰小区的 CRS 的分布信息和天线端口的配置信 息中的任一项、 PBCH调度信息、 同步信道信息和 LTE数据调度信息。
结合第一方面的第一种可能实现方式,在第一方面的第五种可能实现方式 中, 如果由所述服务基站对接收到的上行传输信号进行干扰消除, 当所述指定 基站和所述服务基站支持不同的通信协议, 且所述指定基站属于 UMTS 系统 时,
所述干扰信息包括干扰终端的专用物理控制信道 DPCCH配置信息和编码 格式信息, 所述干扰终端为与所述指定基站进行上行通信的终端; 或者,
所述干扰信息包括所述干扰终端的 DPCCH 配置信息、 编码格式信息和 UMTS数据调度信息。 结合第一方面的第一种可能实现方式,在第一方面的第六种可能实现方式 中, 如果由所述服务基站对接收到的上行传输信号进行干扰消除, 当所述指定 基站和所述服务基站支持不同的通信协议, 且所述指定基站属于 LTE系统时, 所述干扰信息包括干扰终端的导频干扰配置信息、加扰信息和时频域分布 信息, 所述干扰终端为与所述指定基站进行上行通信的终端; 或者,
所述干扰信息包括所述干扰终端的导频干扰配置信息、 加扰信息、 时频域 分布信息和 LTE数据调度信息。
结合第一方面, 在第一方面的第七种可能实现方式中, 所述装置还包括: 干扰信号保存模块, 用于保存所述干扰信号;
保存干扰消除模块, 用于当再次接收到传输信号、 但未获取到所述指定基 站变化后的干扰信息时, 根据保存的所述干扰信号, 对本次接收到的传输信号 进行干扰消除。 第二方面, 提供了一种干扰消除方法, 所述方法包括:
获取指定基站的干扰信息, 所述干扰信息用于消除所述指定基站的干扰; 当接收到传输信号时, 在未对所述传输信号进行解调的前提下, 对所述传 输信号进行备份, 得到第一信号;
根据所述干扰信息, 对所述第一信号中的干扰部分进行解调和重构, 得到 干扰信号;
从所述第一信号中消除所述干扰信号, 得到第二信号。
结合第二方面, 在第二方面的第一种可能实现方式中, 所述获取指定基站 的干扰信息包括:
服务基站接收所述指定基站的干扰信息; 或,
所述服务基站接收所述指定基站的干扰信息, 转发给终端, 所述终端接收 所述干扰信息; 或,
当所述终端支持接收所述指定基站发送的信息时, 所述终端接收所述指定 基站发送的所述干扰信息。
结合第二方面的第一种可能实现方式,在第二方面的第二种可能实现方式 中, 所述服务基站接收所述指定基站的干扰信息时,
所述干扰信息由所述指定基站通过调用所述指定基站与所述服务基站之 间的接口, 发送给所述服务基站; 或,
所述干扰信息由所述指定基站通过所述指定基站与所述服务基站之间的 第一控制节点, 发送给所述服务基站; 或,
所述干扰信息由第二控制节点发送给所述服务基站, 所述第二控制节点用 于调度所述指定基站的资源。
结合第二方面的第一种可能实现方式,在第二方面的第三种可能实现方式 中, 如果由所述终端对接收到的下行传输信号进行干扰消除, 当所述指定基站 和所述服务基站支持不同的通信协议,且所述指定基站属于通用移动通信系统
UMTS时,
所述干扰信息包括干扰小区的主扰码信息, 所述干扰小区为所述指定基站 覆盖的小区; 或者,
所述干扰信息包括所述干扰小区的主扰码信息、物理广播信道 PBCH调度 信息和同步信道信息; 或者,
所述干扰信息包括所述干扰小区的主扰码信息、 PBCH调度信息、 同步信 道信息和 UMTS数据调度信息。
结合第二方面的第一种可能实现方式,在第二方面的第四种可能实现方式 中, 如果由所述终端对接收到的下行传输信号进行干扰消除, 当所述指定基站 和所述服务基站支持不同的通信协议, 且所述指定基站属于长期演进技术 LTE 系统时,
所述干扰信息包括干扰小区的公共参考信号 CRS 的分布信息和天线端口 的配置信息中的任一项, 所述干扰小区为所述指定基站覆盖的小区; 或者, 所述干扰信息包括所述干扰小区的 CRS 的分布信息和天线端口的配置信 息中的任一项、 PBCH调度信息和同步信道信息; 或者,
所述干扰信息包括所述干扰小区的 CRS 的分布信息和天线端口的配置信 息中的任一项、 PBCH调度信息、 同步信道信息和 LTE数据调度信息。
结合第二方面的第一种可能实现方式,在第二方面的第五种可能实现方式 中, 如果由所述服务基站对接收到的上行传输信号进行干扰消除, 当所述指定 基站和所述服务基站支持不同的通信协议, 且所述指定基站属于 UMTS 系统 时,
所述干扰信息包括干扰终端的专用物理控制信道 DPCCH配置信息和编码 格式信息, 所述干扰终端为与所述指定基站进行上行通信的终端; 或者,
所述干扰信息包括所述干扰终端的 DPCCH 配置信息、 编码格式信息和 UMTS数据调度信息。
结合第二方面的第一种可能实现方式,在第二方面的第六种可能实现方式 中, 如果由所述服务基站对接收到的上行传输信号进行干扰消除, 当所述指定 基站和所述服务基站支持不同的通信协议, 且所述指定基站属于 LTE系统时, 所述干扰信息包括干扰终端的导频干扰配置信息、加扰信息和时频域分布 信息, 所述干扰终端为与所述指定基站进行上行通信的终端; 或者,
所述干扰信息包括所述干扰终端的导频干扰配置信息、 加扰信息、 时频域 分布信息和 LTE数据调度信息。
结合第二方面, 在第二方面的第七种可能实现方式中, 所述根据所述干扰 信息, 对所述第一信号中的干扰部分进行解调和重构, 得到干扰信号之后, 所 述方法还包括:
保存所述干扰信号;
当再次接收到传输信号、 但未获取到所述指定基站变化后的干扰信息时, 根据保存的所述干扰信号, 对本次接收到的传输信号进行干扰消除。 本发明实施例提供的技术方案的有益效果是: 通过在消除指定基站造成的干扰时, 获取指定基站的干扰信息, 在接收到 传输信号时,在未对该传输信号进行解调的前提下,先对该传输信号进行备份, 根据该干扰信息, 对备份信号中的干扰部分进行解调和重构, 得到干扰信号, 再消除该干扰信号。 由于已对该传输信号进行了备份, 无需在对传输信号进行 解调的同时重构干扰信号,则无需与该指定基站在时间上同步,提高了灵活性。 附图说明
为了更清楚地说明本发明实施例中的技术方案, 下面将对实施例描述中所 需要使用的附图作简单地介绍, 显而易见地, 下面描述中的附图仅仅是本发明 的一些实施例,对于本领域普通技术人员来讲,在不付出创造性劳动的前提下, 还可以根据这些附图获得其他的附图。
图 1是本发明实施例提供的一种干扰消除系统的结构示意图;
图 2是本发明实施例提供的一种干扰消除方法的流程图;
图 3是本发明实施例提供的一种干扰消除方法的流程图;
图 4是本发明实施例提供的一种干扰消除方法的流程图;
图 5是本发明实施例提供的一种干扰消除装置的结构示意图;
图 6是本发明实施例提供的一种干扰消除设备的结构示意图。 具体实施方式
为使本发明的目的、 技术方案和优点更加清楚, 下面将结合附图对本发明 实施方式作进一步地详细描述。
在介绍本发明的实施例之前, 先对本发明实施例所应用的干扰消除系统进 行介绍。
图 1是本发明实施例提供的干扰消除系统的结构示意图, 参见图 1, 该干 扰消除系统包括指定基站、 服务基站和终端。 其中, 该终端位于该服务基站的 覆盖范围内, 该服务基站用于为该终端提供服务, 并与该终端进行上行通信和 下行通信。 该服务基站与该指定基站共享频谱资源, 则在该服务基站向该终端 发送下行传输信号时, 该指定基站会对该下行传输信号造成干扰, 则该终端用 于获取该指定基站的干扰信息,根据该干扰信息对该下行传输信号进行干扰消 除。 而在该终端向该服务基站发送上行传输信号时, 与该指定基站进行上行通 信的终端也会对该上行传输信号造成干扰, 则该服务基站用于获取该指定基站 的干扰信息, 根据该干扰信息对该上行传输信号进行干扰消除。 图 2是本发明实施例提供的一种干扰消除方法的流程图, 参见图 2, 该方 法包括:
201、 获取指定基站的干扰信息, 该干扰信息用于消除该指定基站的干扰。
202、 当接收到传输信号时, 在未对该传输信号进行解调的前提下, 对该 传输信号进行备份, 得到第一信号。
203、 根据该干扰信息, 对该第一信号中的干扰部分进行解调和重构, 得 到干扰信号。
204、 从该第一信号中消除该干扰信号, 得到第二信号。
本发明实施例提供的方法, 通过在消除指定基站造成的干扰时, 获取指定 基站的干扰信息,在接收到传输信号时,在未对该传输信号进行解调的前提下, 先对该传输信号进行备份, 根据该干扰信息, 对备份信号中的干扰部分进行解 调和重构, 得到干扰信号, 再消除该干扰信号。 由于已对该传输信号进行了备 份, 无需在对传输信号进行解调的同时重构干扰信号, 则无需与该指定基站在 时间上同步, 提高了灵活性。
可选地, 该获取指定基站的干扰信息包括:
服务基站接收该指定基站的干扰信息; 或,
该服务基站接收该指定基站的干扰信息, 转发给终端, 该终端接收该干扰 信息; 或,
当该终端支持接收该指定基站发送的信息时, 该终端接收该指定基站发送 的该干 4尤信息。
可选地, 该服务基站接收该指定基站的干扰信息时,
该干扰信息由该指定基站通过调用该指定基站与该服务基站之间的接口, 发送给该服务基站; 或,
该干扰信息由该指定基站通过该指定基站与该服务基站之间的第一控制 节点, 发送给该服务基站; 或,
该干扰信息由第二控制节点发送给该服务基站, 该第二控制节点用于调度 该指定基站的资源。
可选地, 如果由该终端对接收到的下行传输信号进行干扰消除, 当该指定 基站和该服务基站支持不同的通信协议, 且该指定基站属于 UMTS ( Universal Mobile Telecommunications System, 通用移动通信系统) 时,
该干扰信息包括干扰小区的主扰码信息, 该干扰小区为该指定基站覆盖的 小区; 或者,
该 干 扰 信 息 包 括 该 干 扰 小 区 的 主 扰码 信 息 、 PBCH ( Physical Broadcast Channel , 物理广播信道)调度信息和同步信道信息; 或 者,
该干扰信息包括该干扰小区的主扰码信息、 PBCH调度信息、 同步信道信 息和 UMTS数据调度信息。
可选地, 如果由该终端对接收到的下行传输信号进行干扰消除, 当该指定 基站和该服务基站支持不同的通信协议, 且该指定基站属于 LTE ( Long Term Evolution, 长期演进技术 ) 系统时,
该干扰信息包括干扰小区的 CRS ( Cell-specific reference signals,公共参考 信号)的分布信息和天线端口的配置信息中的任一项, 该干扰小区为该指定基 站覆盖的小区; 或者,
该干扰信息包括该干扰小区的 CRS 的分布信息和天线端口的配置信息中 的任一项、 PBCH调度信息和同步信道信息; 或者, 该干扰信息包括该干扰小区的 CRS 的分布信息和天线端口的配置信息中 的任一项、 PBCH调度信息、 同步信道信息和 LTE数据调度信息。
可选地, 如果由该服务基站对接收到的上行传输信号进行干扰消除, 当该 指定基站和该服务基站支持不同的通信协议, 且该指定基站属于 UMTS 系统 时,
该干扰信息包括干扰终端的 DPCCH ( Dedicated Physical Control Channel, 专用物理控制信道)配置信息和编码格式信息, 该干扰终端为与该指定基站进 行上行通信的终端; 或者,
该干 4尤信息包括该干 4尤终端的 DPCCH配置信息、 编码格式信息和 UMTS 数据调度信息。
可选地, 如果由该服务基站对接收到的上行传输信号进行干扰消除, 当该 指定基站和该服务基站支持不同的通信协议, 且该指定基站属于 LTE系统时, 该干扰信息包括干扰终端的导频干扰配置信息、加扰信息和时频域分布信 息, 该干扰终端为与该指定基站进行上行通信的终端; 或者,
该干扰信息包括该干扰终端的导频干扰配置信息、 加扰信息、 时频域分布 信息和 LTE数据调度信息。
可选地,该根据该干扰信息,对该第一信号中的干扰部分进行解调和重构, 得到干扰信号之后, 该方法还包括:
保存该干扰信号;
当再次接收到传输信号、 但未获取到该指定基站变化后的干扰信息时, 根 据保存的该干扰信号, 对本次接收到的传输信号进行干扰消除。
上述所有可选技术方案, 可以釆用任意结合形成本发明的可选实施例, 在 此不再——赘述。 图 3是本发明实施例提供的一种干扰消除方法的流程图, 本发明实施例应 用于服务基站与终端的下行通信过程中, 交互主体为指定基站、 服务基站和终 端, 参见图 3, 该方法包括:
301、 该指定基站向该服务基站发送该指定基站的干扰信息。
在本发明实施例中, 该终端位于该服务基站的覆盖范围内, 该服务基站为 该终端提供服务。 在该服务基站与该终端的下行通信过程中, 为了提高频谱资 源利用率, 该服务基站可以与该指定基站共享频谱资源。 但是, 当该服务基站 向该终端发送下行传输信号时, 该下行传输信号可能会受到该指定基站的干 扰, 因此, 该终端在接收到该下行传输信号时, 需要消除该指定基站的干扰。 而为了消除干扰, 该指定基站向该服务基站发送该指定基站的干扰信息, 以便 后续该终端根据该干扰信息进行干扰消除。 其中, 该干扰信息用于消除该指定 基站的干扰, 可以包括该指定基站的导频配置信息、 信息发送格式、 码率、 编 码方式等, 本发明实施例对此不做限定。
可选地, 该步骤 301可以包括以下步骤 301a-301b中的任一项:
301a, 该指定基站通过调用该指定基站与该服务基站之间的接口, 将该干 扰信息发送给该服务基站。该接口可以为 LTE系统中的 eNB ( Evolved Node B, 演进节点 B )与 UMTS系统中的无线网络控制器之间的接口, 或者 LTE系统 中的 eNB与 UMTS系统中的 NB ( Node B , 节点 B )之间的接口等等, 本发明 实施例对此不做限定。
301b,该指定基站将该干扰信息发送给该指定基站与该服务基站之间的第 一控制节点, 该第一控制节点在接收到该干扰信息时, 转发给该服务基站。 该 第一控制节点可以为 SRC ( Single Resource Controller, 集中资源控制器)或者 其他节点, 本发明实施例对此不做限定。
另外, 在本发明实施例的另一实施例中, 该步骤 301 还可以由以下步骤 301c代替:
301c, 第二控制节点将该指定基站的干扰信息发送给该服务基站。 其中, 该第二控制节点用于调度该指定基站的资源, 则该第二控制节点可以获取到该 指定基站的干扰信息, 发送给该服务基站。 当然, 该第二控制节点还可以用于 调度该服务基站的资源, 本发明实施例对此不做限定。
上述步骤 301a、 301b和 301c中通过该指定基站向该服务基站发送该干扰 信息, 实现了干扰信息在地面接口的传递。 且, 上述步骤 301a、 301b和 301c 中仅是给出了该干扰信息的发送方式的示例, 但并不构成对该发送方式的限 定。
在本发明实施例中, 由该终端对接收到的下行传输信号进行干扰消除, 待 消除干扰的类型不同时, 该干扰信息的具体内容也不同。
可选地, 当该指定基站和该服务基站支持不同的通信协议, 且该指定基站 属于 UMTS系统时, 该干扰信息可以包括以下三项信息:
( 1-1 )干扰小区的主扰码信息, 该干扰小区为该指定基站覆盖的小区;
( 1-2 ) PBCH调度信息和同步信道信息;
( 1-3 ) UMTS数据调度信息, 如数据调度格式或者编码方式等。
其中, 该干扰小区的主扰码信息用于消除该 UMTS 系统的导频干扰, 该 PBCH调度信息和该同步信道信息用于消除该 UMTS系统的公共信道干扰,该 UMTS数据调度信息用于消除该 UMTS系统的数据信道干扰。那么, 当仅消除 该 UMTS系统的导频干扰时,该干扰信息包括该干扰小区的主扰码信息; 进一 步地, 当还要消除该 UMTS系统的公共信道干扰时,该干扰信息包括该干扰小 区的主扰码信息、 PBCH调度信息和同步信道信息; 更进一步地, 当还要消除 该 UMTS系统的数据信道干扰时, 该干扰信息包括该干扰小区的主扰码信息、 PBCH调度信息、 同步信道信息和 UMTS数据调度信息。
进一步可选地, 当该指定基站和该服务基站支持不同的通信协议, 且该指 定基站属于 LTE系统时, 该干扰信息可以包括以下三项信息:
( 2-1 )干扰小区的 CRS的分布信息和天线端口的配置信息中的任一项, 该干 4尤小区为该指定基站覆盖的小区;
( 2-2 ) PBCH调度信息和同步信道信息;
( 2-3 ) LTE数据调度信息, 如数据调度格式或者编码方式等。 其中, 该干扰小区的 CRS 的分布信息和天线端口的配置信息中的任一项 用于消除该 LTE系统的导频干扰, PBCH调度信息和同步信道信息用于消除该 LTE系统的公共信道干扰, 该 LTE数据调度信息用于消除该 LTE系统的数据 信道干扰。 那么, 当仅消除该 LTE系统的导频干扰时, 该干扰信息包括干扰小 区的 CRS 的分布信息和天线端口的配置信息中的任一项; 进一步地, 当还要 消除该 LTE系统的公共信道干扰时, 该干扰信息包括干扰小区的 CRS的分布 信息和天线端口的配置信息中的任一项、 PBCH调度信息和同步信道信息; 更 进一步地, 当还要消除该 LTE系统的数据信道干扰时,该干扰信息包括干扰小 区的 CRS的分布信息和天线端口的配置信息中的任一项、 PBCH调度信息、 同 步信道信息和 LTE数据调度信息。
需要说明的是, 由于数据信道的干扰信息会经常发生变化, 在消除数据信 道干扰时, 对该指定基站与该服务基站之间交互的信息的时延、 频度以及该终 端的处理能力的要求都很高, 则该服务基站和该指定基站可以不共享数据信 道,将两个数据信道分时错开, 以避免造成数据信道的干扰, 降低系统复杂度, 相应的, 该干扰信息中也无需包括数据调度信息。 进一步需要说明的是, 上述 可选方式中仅是给出了当该服务基站与该指定基站支持不同的通信协议时, 不 同类型的干扰所对应的干扰信息的示例, 但并不构成对该干扰信息的限定。
302、 当该服务基站接收到该干扰信息时, 向该终端转发该干扰信息。 在下行通信过程中,为了消除干扰,该服务基站向该终端发送该干扰信息, 实现了干扰信息在空口的传递, 由该终端根据该干扰信息对接收到的下行传输 信号进行干扰消除。
具体地, 该服务基站可以基于 RRC ( Radio Resource Control, 无线资源控 制)协议, 向该终端发送该干扰信息, 或者, 该服务基站在向该终端发送下行 控制信息的同时, 发送该干扰信息, 或者, 该服务基站在向该终端发送下行调 度信息的同时, 发送该干扰信息等等, 本发明实施例对该服务基站向该终端发 送该干扰信息的具体方式不做限定。 需要说明的是, 上述步骤 301和步骤 302中以该指定基站向该服务基站发 送该干扰信息, 该服务基站在接收到该干扰信息时, 再向该终端发送该干扰信 息为例进行说明, 而在实际应用过程中,该终端可能会配置两个接收器,或者, 该服务基站和该指定基站可能会配置在同一个物理实体或者逻辑实体上, 此 时, 该终端支持接收该指定基站发送的信息, 则该指定基站可以直接将该干扰 信息发送给该终端, 而无需经过该服务基站发送。
303、 当该终端接收到该干扰信息时, 保存该干扰信息。 该终端保存该干 扰信息, 以便根据该干扰信息进行干扰消除。
304、 当该终端接收到下行传输信号时, 在未对该下行传输信号进行解调 的前提下, 对该下行传输信号进行备份, 得到第一信号, 根据该干扰信息, 对 该第一信号中的干扰部分进行解调和重构, 得到干扰信号。
在本发明实施例中, 该终端在接收到该下行传输信号时, 并不会立即对该 下行传输信号进行解调, 而是先对该下行传输信号进行备份, 得到第一信号, 根据该干扰信息,对该第一信号中的干扰部分进行解调和重构,得到干扰信号。
需要说明的是, 本发明实施例以该步骤 301-302在该步骤 304之前执行为 例进行说明, 而在实际应用过程中, 该终端也可以先接收到该下行传输信号, 对该下行传输信号进行备份, 得到第一信号, 再接收该干扰信息, 根据该干扰 信息对该第一信号中的干扰部分进行解调和重构, 得到干扰信号, 本发明实施 例对此不做限定。
305、 该终端从该第一信号中消除该干扰信号, 得到第二信号, 对该第二 信号进行解调, 得到第三信号。
在本发明实施例中, 该终端得到该干扰信号后, 再从该第一信号中减去该 干扰信息, 得到第二信号, 该第二信号即为已消除干扰的信号。 之后, 该终端 还可以对该第二信号重新进行解调, 得到第三信号。
需要说明的是, 该终端得到该干扰信号时, 可以保存该干扰信号, 在后续 过程中, 如果该干扰信息保持不变, 表示该指定基站造成的干扰也固定不变, 则该终端可以在之后接收到下行传输信号时, 直接根据该保存的干扰信号对该 下行传输信号进行干扰消除, 而无需再次解调和重构该干扰信号。
相应的, 该终端保存上一次进行干扰消除时得到的干扰信号, 并在每次接 收到该干扰信息时, 判断该干扰信息与上一次接收到的干扰信息是否相同, 如 果相同, 表示该干扰信息未发生变化, 则该终端再次接收到下行传输信号时, 直接根据保存的干扰信号对该下行传输信号进行干扰消除; 如果不同, 表示该 干扰信息已发生变化, 则该终端再次接收到下行传输信号时, 对该下行传输信 号进行备份, 得到第一信号, 根据该变化后的干扰信息, 对该第一信号中的干 扰部分进行解调和重构, 得到干扰信号, 并保存本次得到的干扰信号。
进一步地, 该指定基站可以在每次检测到该干扰信息发生变化时, 才向该 终端发送该变化后的干扰信息, 而当该干扰信息未发生变化时, 就不向该终端 发送干扰信息, 那么, 该终端在每次得到该干扰信号时, 保存该干扰信号, 如 果该终端还未接收到该指定基站发送的另一干扰信息时就接收到了下行传输 信号, 则无需判断该干扰信息是否发生变化, 直接根据该保存的干扰信号对该 下行传输信号进行干扰消除即可。
本发明实施例提供的方法, 通过在该终端消除该指定基站造成的干扰时, 获取该指定基站的干扰信息, 在接收到下行传输信号时, 在未对该传输信号进 行解调的前提下, 先对该下行传输信号进行备份, 根据该干扰信息, 对备份信 号中的干扰部分进行解调和重构, 得到干扰信号, 再消除该干扰信号。 由于已 对该传输信号进行了备份, 无需在对传输信号进行解调的同时重构干扰信号, 则无需与该指定基站在时间上同步, 提高了灵活性。 进一步地, 当该服务基站 与该指定基站支持不同的通信协议时, 该服务基站与该指定基站也能够交互干 扰信息, 实现了不同制式间的干扰消除。 图 4是本发明实施例提供的一种干扰消除方法的流程图, 本发明实施例应 用于服务基站与终端的上行通信过程中, 交互主体为指定基站和服务基站, 参 见图 4, 该方法包括:
401、 该指定基站向该服务基站发送干扰信息。
在本发明实施例中, 在该服务基站与终端的上行通信过程中, 该服务基站 也可以与该指定基站共享频谱资源, 但是, 当终端向该服务基站发送上行传输 信号时, 该上行传输信号可能会受到由该指定基站提供服务的终端的干扰, 因 此,该服务基站在接收到该上行传输信号时,需要消除干扰, 而为了消除干扰, 该指定基站向该服务基站发送干扰信息。 其中, 该干扰信息用于消除该指定基 站的干扰, 可以包括参考信号格式、 码率和编码方式等, 本发明实施例对此不 做限定。 另外, 该指定基站向该服务基站发送干扰信息的具体方式与上述步骤 301a, 301b以及 301c类似, 在此不再赘述。
在本发明实施例中, 由该服务基站对接收到的上行传输信号进行干扰消 除, 待消除干扰的类型不同时, 该干扰信息的具体内容也不同。
可选地, 当该指定基站和该服务基站支持不同的通信协议, 且该指定基站 属于 UMTS系统时, 该干扰信息可以包括以下两项信息:
( 3-1 )干 ·ί尤终端的 DPCCH配置信息和编码格式信息, 该干 ·ί尤终端为与该 指定基站进行上行通信的终端;
( 3-2 ) UMTS数据调度信息, 如数据调度格式或者编码方式等。
其中, 该干扰终端位于该指定基站的覆盖范围内, 该干扰终端在向该指定 基站发送上行传输信号时,会对该 UMTS系统中的上行传输信号造成干扰。该 干扰终端的 DPCCH 配置信息和编码格式信息用于消除该 UMTS 系统的 DPCCH干扰,该 UMTS数据调度信息用于消除该 UMTS系统的数据信道干扰。 那么, 当仅消除该 UMTS系统的 DPCCH干扰时, 该干扰信息包括该干扰终端 的 DPCCH配置信息和编码格式信息; 进一步地, 当还要消除该 UMTS系统的 数据信道干扰时, 该干扰信息包括该干扰终端的 DPCCH配置信息、 编码格式 信息和 UMTS数据调度信息。
进一步可选地, 当该指定基站和该服务基站支持不同的通信协议, 且该指 定基站属于 LTE系统时, 该干扰信息可以包括以下两项信息:
( 4-1 )干扰终端的导频干扰配置信息、 加扰信息和时频域分布信息, 该 干扰终端为与该指定基站进行上行通信的终端;
( 4-2 ) LTE数据调度信息, 如数据调度格式或者编码方式等。
其中, 该干扰终端的导频干扰配置信息、 加扰信息和时频域分布信息用于 消除该 LTE系统的导频干扰, 该 LTE数据调度信息用于消除该 LTE系统的数 据信道干扰。 那么, 当仅消除该 LTE系统的导频干扰时, 该干扰信息包括干扰 终端的导频干扰配置信息、 加扰信息和时频域分布信息; 进一步地, 当还要消 除该 LTE系统的数据信道干扰时,该干扰信息包括干扰终端的导频干扰配置信 息、 加扰信息、 时频域分布信息和 LTE数据调度信息。
需要说明的是, 上述可选方式中仅是给出了待消除的不同类型的干扰所对 应的干扰信息的示例, 但并不构成对该干扰信息的限定。
402、 当该服务基站接收到该干扰信息时, 保存该干扰信息。
403、 当该服务基站接收到上行传输信号时, 在未对该上行传输信号进行 解调的前提下,对该上行传输信号进行备份,得到第一信号,根据该干扰信息, 对该第一信号中的干扰部分进行解调和重构, 得到干扰信号。
404、 该服务基站从该第一信号中消除该干扰信号, 得到第二信号, 对该 第二信号进行解调, 得到第三信号。
上述步骤 402-404与步骤 303-305类似, 在此不再赘述。
本发明实施例提供的方法, 通过在该服务基站消除该指定基站造成的干扰 时, 获取该指定基站的干扰信息, 在接收到上行传输信号时, 在未对该传输信 号进行解调的前提下, 先对该上行传输信号进行备份, 根据该干扰信息, 对备 份信号中的干扰部分进行解调和重构, 得到干扰信号, 再消除该干扰信号。 由 于已对该传输信号进行了备份, 无需在对传输信号进行解调的同时重构干扰信 号, 则无需与该指定基站在时间上同步, 且该干扰信息可以多种方式发送给该 终端, 提高了灵活性。 进一步地, 当该服务基站与该指定基站支持不同的通信 协议时, 该服务基站与该指定基站也能够交互干扰信息, 实现了不同制式间的 干扰消除。 图 5是本发明实施例提供的一种干扰消除装置的结构示意图, 参见图 5, 该装置包括:
干扰信息获取模块 501, 用于获取指定基站的干扰信息, 该干扰信息用于 消除该指定基站的干扰;
备份模块 502, 用于当接收到传输信号时, 在未对该传输信号进行解调的 前提下, 对该传输信号进行备份, 得到第一信号;
解调重构模块 503与干扰信息获取模块 501和备份模块 502连接, 用于根 据该干扰信息, 对该第一信号中的干扰部分进行解调和重构, 得到干扰信号; 干扰消除模块 504与干扰信息获取模块 501和解调重构模块 503连接, 用 于从该第一信号中消除该干扰信号, 得到第二信号。
本发明实施例提供的装置, 通过在消除指定基站造成的干扰时, 获取指定 基站的干扰信息,在接收到传输信号时,在未对该传输信号进行解调的前提下, 先对该传输信号进行备份, 根据该干扰信息, 对备份信号中的干扰部分进行解 调和重构, 得到干扰信号, 再消除该干扰信号。 由于已对该传输信号进行了备 份, 无需在对传输信号进行解调的同时重构干扰信号, 则无需与该指定基站在 时间上同步, 提高了灵活性。
可选地, 该干扰信息获取模块 501位于服务基站; 或,
该干扰信息获取模块 501位于终端, 该干扰信息获取模块 501用于接收该 服务基站发送的干扰信息, 该干扰信息由该指定基站发送给该服务基站; 或, 当该终端支持接收该指定基站发送的信息时, 该干扰信息获取模块 501位 于该终端。
可选地, 该干扰信息获取模块 501位于该服务基站时,
该干扰信息由该指定基站通过调用该指定基站与该服务基站之间的接口, 发送给该服务基站; 或,
该干扰信息由该指定基站通过该指定基站与该服务基站之间的第一控制 节点, 发送给该服务基站; 或,
该干扰信息由第二控制节点发送给该服务基站, 该第二控制节点用于调度 该指定基站的资源。
可选地, 如果由该终端对接收到的下行传输信号进行干扰消除, 当该指定 基站和该服务基站支持不同的通信协议, 且该指定基站属于通用移动通信系统
UMTS时,
该干扰信息包括干扰小区的主扰码信息, 该干扰小区为该指定基站覆盖的 小区; 或者,
该干扰信息包括该干扰小区的主扰码信息、物理广播信道 PBCH调度信息 和同步信道信息; 或者,
该干扰信息包括该干扰小区的主扰码信息、 PBCH调度信息、 同步信道信 息和 UMTS数据调度信息。
可选地, 如果由该终端对接收到的下行传输信号进行干扰消除, 当该指定 基站和该服务基站支持不同的通信协议, 且该指定基站属于长期演进技术 LTE 系统时,
该干扰信息包括干扰小区的公共参考信号 CRS 的分布信息和天线端口的 配置信息中的任一项, 该干扰小区为该指定基站覆盖的小区; 或者,
该干扰信息包括该干扰小区的 CRS 的分布信息和天线端口的配置信息中 的任一项、 PBCH调度信息和同步信道信息; 或者,
该干扰信息包括该干扰小区的 CRS 的分布信息和天线端口的配置信息中 的任一项、 PBCH调度信息、 同步信道信息和 LTE数据调度信息。
可选地, 如果由该服务基站对接收到的上行传输信号进行干扰消除, 当该 指定基站和该服务基站支持不同的通信协议, 且该指定基站属于 UMTS 系统 时, 该干扰信息包括干扰终端的专用物理控制信道 DPCCH配置信息和编码格 式信息, 该干扰终端为与该指定基站进行上行通信的终端; 或者,
该干 4尤信息包括该干 4尤终端的 DPCCH配置信息、 编码格式信息和 UMTS 数据调度信息。
可选地, 如果由该服务基站对接收到的上行传输信号进行干扰消除, 当该 指定基站和该服务基站支持不同的通信协议, 且该指定基站属于 LTE系统时, 该干扰信息包括干扰终端的导频干扰配置信息、加扰信息和时频域分布信 息, 该干扰终端为与该指定基站进行上行通信的终端; 或者,
该干扰信息包括该干扰终端的导频干扰配置信息、 加扰信息、 时频域分布 信息和 LTE数据调度信息。
可选地, 该装置还包括:
干扰信号保存模块, 用于保存该干扰信号;
保存干扰消除模块, 用于当再次接收到传输信号、 但未获取到该指定基站 变化后的干扰信息时, 根据保存的该干扰信号, 对本次接收到的传输信号进行 干 4尤消除。
上述所有可选技术方案, 可以釆用任意结合形成本发明的可选实施例, 在 此不再——赘述。 图 6是本发明实施例提供的一种干扰消除设备的结构示意图, 参见图 6, 该设备包括:
接收器 601、 发射器 602、 存储器 603和处理器 604, 该接收器 601、 该发 射器 602和该存储器 603分别与该处理器 604连接, 该存储器 603存储有程序 代码, 该处理器 604用于调用该程序代码, 执行以下操作:
通过该接收器 601获取指定基站的干扰信息, 该干扰信息用于消除该指定 基站的干 4尤;
当通过该接收器 601接收到传输信号时, 在未对该传输信号进行解调的前 提下, 对该传输信号进行备份, 得到第一信号;
根据该干扰信息, 对该第一信号中的干扰部分进行解调和重构, 得到干扰 信号;
从该第一信号中消除该干扰信号, 得到第二信号。
可选地, 该处理器 604还用于调用该程序代码, 执行以下操作: 通过该接收器 601接收该指定基站的干扰信息; 或,
通过该接收器 601接收该指定基站的干扰信息, 转发给终端, 该终端接收 该干扰信息; 或,
当支持接收该指定基站发送的信息时,通过该接收器 601接收该指定基站 发送的该干扰 /ί言息。
可选地, 接收该指定基站的干扰信息时,
该干扰信息由该指定基站通过调用该指定基站与该服务基站之间的接口, 发送给该服务基站; 或,
该干扰信息由该指定基站通过该指定基站与该服务基站之间的第一控制 节点, 发送给该服务基站; 或,
该干扰信息由第二控制节点发送给该服务基站, 该第二控制节点用于调度 该指定基站的资源。
可选地, 如果由该终端对接收到的下行传输信号进行干扰消除, 当该指定 基站和该服务基站支持不同的通信协议, 且该指定基站属于通用移动通信系统 UMTS时,
该干扰信息包括干扰小区的主扰码信息, 该干扰小区为该指定基站覆盖的 小区; 或者,
该干扰信息包括该干扰小区的主扰码信息、物理广播信道 PBCH调度信息 和同步信道信息; 或者,
该干扰信息包括该干扰小区的主扰码信息、 PBCH调度信息、 同步信道信 息和 UMTS数据调度信息。 可选地, 如果由该终端对接收到的下行传输信号进行干扰消除, 当该指定 基站和该服务基站支持不同的通信协议, 且该指定基站属于长期演进技术 LTE 系统时,
该干扰信息包括干扰小区的公共参考信号 CRS 的分布信息和天线端口的 配置信息中的任一项, 该干扰小区为该指定基站覆盖的小区; 或者,
该干扰信息包括该干扰小区的 CRS 的分布信息和天线端口的配置信息中 的任一项、 PBCH调度信息和同步信道信息; 或者,
该干扰信息包括该干扰小区的 CRS 的分布信息和天线端口的配置信息中 的任一项、 PBCH调度信息、 同步信道信息和 LTE数据调度信息。
可选地, 如果由该服务基站对接收到的上行传输信号进行干扰消除, 当该 指定基站和该服务基站支持不同的通信协议, 且该指定基站属于 UMTS 系统 时,
该干扰信息包括干扰终端的专用物理控制信道 DPCCH配置信息和编码格 式信息, 该干扰终端为与该指定基站进行上行通信的终端; 或者,
该干 4尤信息包括该干 4尤终端的 DPCCH配置信息、 编码格式信息和 UMTS 数据调度信息。
可选地, 如果由该服务基站对接收到的上行传输信号进行干扰消除, 当该 指定基站和该服务基站支持不同的通信协议, 且该指定基站属于 LTE系统时, 该干扰信息包括干扰终端的导频干扰配置信息、加扰信息和时频域分布信 息, 该干扰终端为与该指定基站进行上行通信的终端; 或者,
该干扰信息包括该干扰终端的导频干扰配置信息、 加扰信息、 时频域分布 信息和 LTE数据调度信息。
可选地, 该处理器 604还用于调用该程序代码, 执行以下操作:
保存该干扰信号;
当再次通过该接收器 601接收到传输信号、但未获取到该指定基站变化后 的干扰信息时, 根据保存的该干扰信号, 对本次接收到的传输信号进行干扰消 除。
本领域普通技术人员可以理解实现上述实施例的全部或部分步骤可以通 过硬件来完成, 也可以通过程序来指令相关的硬件完成, 所述的程序可以存储 于一种计算机可读存储介质中, 上述提到的存储介质可以是只读存储器, 磁盘 或光盘等。 以上所述仅为本发明的较佳实施例, 并不用以限制本发明, 凡在本发明的 精神和原则之内, 所作的任何修改、 等同替换、 改进等, 均应包含在本发明的 保护范围之内。

Claims

权 利 要 求 书
1、 一种干扰消除装置, 其特征在于, 所述装置包括:
干扰信息获取模块, 用于获取指定基站的干扰信息, 所述干扰信息用于消 除所述指定基站的干扰;
备份模块, 用于当接收到传输信号时, 在未对所述传输信号进行解调的前 提下, 对所述传输信号进行备份, 得到第一信号;
解调重构模块, 用于根据所述干扰信息, 对所述第一信号中的干扰部分进 行解调和重构, 得到干扰信号;
干扰消除模块, 用于从所述第一信号中消除所述干扰信号, 得到第二信号。
2、 根据权利要求 1所述的装置, 其特征在于, 所述干扰信息获取模块位于 服务基站; 或,
所述干扰信息获取模块位于终端, 所述干扰信息获取模块用于接收所述服 务基站发送的干扰信息, 所述干扰信息由所述指定基站发送给所述服务基站; 或,
当所述终端支持接收所述指定基站发送的信息时, 所述干扰信息获取模块 位于所述终端。
3、 根据权利要求 2所述的装置, 其特征在于, 所述干扰信息获取模块位于 所述服务基站时,
所述干扰信息由所述指定基站通过调用所述指定基站与所述服务基站之间 的接口, 发送给所述服务基站; 或,
所述干扰信息由所述指定基站通过所述指定基站与所述服务基站之间的第 一控制节点, 发送给所述服务基站; 或,
所述干扰信息由第二控制节点发送给所述服务基站, 所述第二控制节点用 于调度所述指定基站的资源。
4、 根据权利要求 2所述的装置, 其特征在于, 如果由所述终端对接收到的 下行传输信号进行干扰消除, 当所述指定基站和所述服务基站支持不同的通信 协议, 且所述指定基站属于通用移动通信系统 UMTS时,
所述干扰信息包括干扰小区的主扰码信息, 所述干扰小区为所述指定基站 覆盖的小区; 或者,
所述干扰信息包括所述干扰小区的主扰码信息、 物理广播信道 PBCH调度 信息和同步信道信息; 或者,
所述干扰信息包括所述干扰小区的主扰码信息、 PBCH调度信息、 同步信道 信息和 UMTS数据调度信息。
5、 根据权利要求 2所述的装置, 其特征在于, 如果由所述终端对接收到的 下行传输信号进行干扰消除, 当所述指定基站和所述服务基站支持不同的通信 协议, 且所述指定基站属于长期演进技术 LTE系统时,
所述干扰信息包括干扰小区的公共参考信号 CRS的分布信息和天线端口的 配置信息中的任一项, 所述干扰小区为所述指定基站覆盖的小区; 或者,
所述干扰信息包括所述干扰小区的 CRS的分布信息和天线端口的配置信息 中的任一项、 PBCH调度信息和同步信道信息; 或者,
所述干扰信息包括所述干扰小区的 CRS的分布信息和天线端口的配置信息 中的任一项、 PBCH调度信息、 同步信道信息和 LTE数据调度信息。
6、 根据权利要求 2所述的装置, 其特征在于, 如果由所述服务基站对接收 到的上行传输信号进行干扰消除, 当所述指定基站和所述服务基站支持不同的 通信协议, 且所述指定基站属于 UMTS系统时,
所述干扰信息包括干扰终端的专用物理控制信道 DPCCH 配置信息和编码 格式信息, 所述干扰终端为与所述指定基站进行上行通信的终端; 或者, 所述干扰信息包括所述干扰终端的 DPCCH 配置信息、 编码格式信息和 UMTS数据调度信息。
7、 根据权利要求 2所述的装置, 其特征在于, 如果由所述服务基站对接收 到的上行传输信号进行干扰消除, 当所述指定基站和所述服务基站支持不同的 通信协议, 且所述指定基站属于 LTE系统时,
所述干扰信息包括干扰终端的导频干扰配置信息、 加扰信息和时频域分布 信息, 所述干扰终端为与所述指定基站进行上行通信的终端; 或者,
所述干扰信息包括所述干扰终端的导频干扰配置信息、 加扰信息、 时频域 分布信息和 LTE数据调度信息。
8、 根据权利要求 1所述的装置, 其特征在于, 所述装置还包括: 干扰信号保存模块, 用于保存所述干扰信号;
保存干扰消除模块, 用于当再次接收到传输信号、 但未获取到所述指定基 站变化后的干扰信息时, 根据保存的所述干扰信号, 对本次接收到的传输信号 进行干扰消除。
9、 一种干扰消除方法, 其特征在于, 所述方法包括:
获取指定基站的干扰信息, 所述干扰信息用于消除所述指定基站的干扰; 当接收到传输信号时, 在未对所述传输信号进行解调的前提下, 对所述传 输信号进行备份, 得到第一信号;
根据所述干扰信息, 对所述第一信号中的干扰部分进行解调和重构, 得到 干扰信号;
从所述第一信号中消除所述干扰信号, 得到第二信号。
10、 根据权利要求 9所述的方法, 其特征在于, 所述获取指定基站的干扰 信息包括:
服务基站接收所述指定基站的干扰信息; 或,
所述服务基站接收所述指定基站的干扰信息, 转发给终端, 所述终端接收 所述干扰信息; 或,
当所述终端支持接收所述指定基站发送的信息时, 所述终端接收所述指定 基站发送的所述干扰信息。
11、 根据权利要求 10所述的方法, 其特征在于, 所述服务基站接收所述指 定基站的干扰信息时,
所述干扰信息由所述指定基站通过调用所述指定基站与所述服务基站之间 的接口, 发送给所述服务基站; 或,
所述干扰信息由所述指定基站通过所述指定基站与所述服务基站之间的第 一控制节点, 发送给所述服务基站; 或,
所述干扰信息由第二控制节点发送给所述服务基站, 所述第二控制节点用 于调度所述指定基站的资源。
12、 根据权利要求 10所述的方法, 其特征在于, 如果由所述终端对接收到 的下行传输信号进行干扰消除, 当所述指定基站和所述服务基站支持不同的通 信协议, 且所述指定基站属于通用移动通信系统 UMTS时,
所述干扰信息包括干扰小区的主扰码信息, 所述干扰小区为所述指定基站 覆盖的小区; 或者,
所述干扰信息包括所述干扰小区的主扰码信息、 物理广播信道 PBCH调度 信息和同步信道信息; 或者,
所述干扰信息包括所述干扰小区的主扰码信息、 PBCH调度信息、 同步信道 信息和 UMTS数据调度信息。
13、 根据权利要求 10所述的方法, 其特征在于, 如果由所述终端对接收到 的下行传输信号进行干扰消除, 当所述指定基站和所述服务基站支持不同的通 信协议, 且所述指定基站属于长期演进技术 LTE系统时,
所述干扰信息包括干扰小区的公共参考信号 CRS的分布信息和天线端口的 配置信息中的任一项, 所述干扰小区为所述指定基站覆盖的小区; 或者,
所述干扰信息包括所述干扰小区的 CRS的分布信息和天线端口的配置信息 中的任一项、 PBCH调度信息和同步信道信息; 或者,
所述干扰信息包括所述干扰小区的 CRS的分布信息和天线端口的配置信息 中的任一项、 PBCH调度信息、 同步信道信息和 LTE数据调度信息。
14、 根据权利要求 10所述的方法, 其特征在于, 如果由所述服务基站对接 收到的上行传输信号进行干扰消除, 当所述指定基站和所述服务基站支持不同 的通信协议, 且所述指定基站属于 UMTS系统时,
所述干扰信息包括干扰终端的专用物理控制信道 DPCCH 配置信息和编码 格式信息, 所述干扰终端为与所述指定基站进行上行通信的终端; 或者,
所述干扰信息包括所述干扰终端的 DPCCH 配置信息、 编码格式信息和 UMTS数据调度信息。
15、 根据权利要求 10所述的方法, 其特征在于, 如果由所述服务基站对接 收到的上行传输信号进行干扰消除, 当所述指定基站和所述服务基站支持不同 的通信协议, 且所述指定基站属于 LTE系统时,
所述干扰信息包括干扰终端的导频干扰配置信息、 加扰信息和时频域分布 信息, 所述干扰终端为与所述指定基站进行上行通信的终端; 或者,
所述干扰信息包括所述干扰终端的导频干扰配置信息、 加扰信息、 时频域 分布信息和 LTE数据调度信息。
16、 根据权利要求 9所述的方法, 其特征在于, 所述根据所述干扰信息, 对所述第一信号中的干扰部分进行解调和重构, 得到干扰信号之后, 所述方法 还包括:
保存所述干扰信号;
当再次接收到传输信号、 但未获取到所述指定基站变化后的干扰信息时, 根据保存的所述干扰信号, 对本次接收到的传输信号进行干扰消除。
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