Abstract:
A method for configuring a cell is provided. Configuration information of a first cell is obtained, wherein the configuration information comprises position information of one or more multicast broadcast single frequency network (MBSFN) sub-frames in a radio frame of the first cell. A radio frame of a second cell is configured according to the configuration information of the first cell. In the method for configuring the cell, interference between the first cell and the second cell is reduced.

Description:
CROSS REFERENCE TO RELATED APPLICATIONS 
       [0001]    This application is a continuation of U.S. patent application Ser. No. 13/769,697, filed on Feb. 18, 2013, which is a continuation of International Application No. PCT/CN2011/075298, filed on Jun. 3, 2011. The International Application claims priority to Chinese Patent Application No. 201010255446.0, filed on Aug. 17, 2010. The afore-mentioned patent applications are hereby incorporated by reference in their entireties. 
     
    
     TECHNICAL FIELD 
       [0002]    The present application relates to the field of mobile communication technologies, and in particular, to a technology of configuring a cell. 
       BACKGROUND 
       [0003]    In a Long Term Evolution (LTE) system or a Long Term Evolution-Advanced (LTE-A) system, certain sub-frames of a radio frame may be configured as Multicast Broadcast Single Frequency Network (MBSFN) sub-frames. A MBSFN sub-frame may be an idle sub-frame, namely, a serviceless MBSFN sub-frame; or a non-idle sub-frame, namely, an MBSFN sub-frame used for transmitting services. 
         [0004]    Because the quantity of Common Reference Signals (CRSs) in a MBSFN sub-frame is less than that of the CRSs in an ordinary sub-frame (such as a unicast sub-frame), the transmission time is reduced. Meanwhile, when no CRS needs to be sent, a Power Amplifier (PA) in the corresponding Packet Switched (PS) domain may be shut down to save power, thereby saving energy. 
         [0005]    However, after MBSFN sub-frames are configured in the system, the service sub-frame resources are more centralized. Therefore, with the MBSFN sub-frames being used to save energy of the system, if all neighboring cells are using MBSFN sub-frames to save energy, the probability of generating interference at the edge of the cell increases, and the spectrum efficiency is reduced. 
       SUMMARY 
       [0006]    In one aspect, the present application provides a method for configuring a cell, where the method includes: obtaining, by a network node, information for configuring a first set of serviceless Multicast Broadcast Single Frequency Network (MBSFN) sub-frame(s) of a first cell; and configuring, by the network node, a second set of serviceless MBSFN sub-frame(s) of a neighboring cell of the first cell by alternating or partly alternating the second set of serviceless MBSFN sub-frame(s) with the first set of serviceless MBSFN sub-frame(s) according to the information for configuring the first set of serviceless MBSFN sub-frame(s). 
         [0007]    In another aspect, the present application provides a base station, including: a receiver, configured to receive information for configuring a first set of serviceless Multicast Broadcast Single Frequency Network (MBSFN) sub-frame(s) of a neighboring cell of a first cell belonging to the base station; a configuring unit, configured to configure a second set of serviceless MBSFN sub-frame(s) of the first cell by alternating or partly alternating the second set of serviceless MBSFN sub-frame(s) with the first set of serviceless MBSFN sub-frame(s) according to the information for configuring the first set of serviceless MBSFN sub-frame(s); and a first transmitter, configured to transmit the configured second set of serviceless MBSFN sub-frame(s). 
         [0008]    In another aspect, the present application provides a centralized control device, including: a receiving unit, configured to receive information for configuring serviceless MBSFN sub-frames of an energy-saving cell from a base station; and a configuring unit, adapted to configure serviceless MBSFN sub-frames for a neighboring cell of the energy-saving cell by alternating the serviceless MBSFN sub-frames of the neighboring cell with the serviceless MBSFN sub-frames of the energy-saving cell according to the information for configuring the serviceless MBSFN sub-frames of the energy-saving cell. 
         [0009]    In another aspect, the present application provides a system for configuring an energy-saving cell. The system includes the centralized control device and a base station of the energy-saving cell. The base station of the energy-saving cell is configured to send information for configuring serviceless MBSFN sub-frames of the energy-saving cell to the centralized control device. 
         [0010]    In the foregoing technical solution, the serviceless MBSFN sub-frames of the neighboring cell alternate with the serviceless MBSFN sub-frames of the energy-saving cell, thereby reducing interference between cells and improving stability of the system. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0011]      FIG. 1  is a flowchart of a method for configuring an energy-saving cell according to an embodiment of the present application; 
           [0012]      FIG. 2  is a schematic structure diagram of a system according to an embodiment of the present application; 
           [0013]      FIG. 3  is a flowchart of a method for configuring an energy-saving cell according to another embodiment of the present application; 
           [0014]      FIG. 4 a -4 c    are schematic diagrams of configuring sub-frames in a cell according to an embodiment of the present application; 
           [0015]      FIG. 5  is a flowchart of a method for configuring an energy-saving cell according to another embodiment of the present application; 
           [0016]      FIG. 6  is a flowchart of a method for configuring an energy-saving cell according to another embodiment of the present application; 
           [0017]      FIG. 7  is a schematic diagram of configuring sub-frames in a cell according to another embodiment of the present application; 
           [0018]      FIG. 8  is a schematic structure diagram of a base station according to an embodiment of the present application; 
           [0019]      FIG. 9  is a schematic structure diagram of a centralized control device according to an embodiment of the present application; and 
           [0020]      FIG. 10  is a schematic diagram of a system for configuring an energy-saving cell according to an embodiment of the present application. 
       
    
    
     DETAILED DESCRIPTION OF THE EMBODIMENTS 
       [0021]    The following describes embodiments of the present application in detail with reference to accompanying drawings. 
         [0022]    As shown in  FIG. 1 , a method for configuring an energy-saving cell in an embodiment of the present application includes the following steps. 
         [0023]      101 : A network node obtains information for configuring serviceless MBSFN sub-frames of an energy-saving cell. 
         [0024]      102 : The network node configures serviceless MBSFN sub-frames of a neighboring cell of the energy-saving cell by alternating the serviceless MBSFN sub-frames of the neighboring cell with the serviceless MBSFN sub-frames of the energy-saving cell according to the information for configuring the serviceless MBSFN sub-frames of the energy-saving cell. 
         [0025]    In an embodiment of the present application, the alternating the serviceless MBSFN sub-frames of the neighboring cell with the serviceless MBSFN sub-frames of the energy-saving cell includes the following configuration: The serviceless MBSFN sub-frames of the neighboring cell never overlap, or partly overlap, the serviceless MBSFN sub-frames of the energy-saving cell. 
         [0026]    In another embodiment, the method may further include the following steps. A base station of the energy-saving cell sends Time division interference Overload Indicator (TOI) information to the network device after detecting that interference exceeds a preset threshold, or the base station of the energy-saving cell sends Time division High Interference Indication (THII) information to the network device if the energy-saving cell uses a high-interference sub-frame. After receiving the TOI information and/or THII information sent by the base station of the energy-saving cell, the network device configures the serviceless MBSFN sub-frames of the neighboring cell according to the received information for configuring the serviceless MBSFN sub-frames of the energy-saving cell. 
         [0027]    Optionally, when the serviceless MBSFN sub-frames of the energy-saving cell change, the base station of the energy-saving cell sends a notification message to the network device, where the notification message is used for indicating the change of the serviceless MBSFN sub-frames of the energy-saving cell. The change of the serviceless MBSFN sub-frames of the energy-saving cell includes: increasing or decreasing the serviceless MBSFN sub-frames of the energy-saving cell; and the decreasing of the serviceless MBSFN sub-frames of the energy-saving cell includes: sending a Multicast Broadcast Media Service (MBMS) in the serviceless MBSFN sub-frames of the energy-saving cell, or configuring the serviceless MBSFN sub-frames of the energy-saving cell as unicast sub-frames or other service sub-frames. 
         [0028]    In the method for configuring the energy-saving cell, the serviceless MBSFN sub-frames of the neighboring cell alternate with the serviceless MBSFN sub-frames of the energy-saving cell, thereby reducing interference between cells and improving stability of the system. 
         [0029]    The network node in the foregoing embodiment includes a base station of the neighboring cell of the energy-saving cell or a centralized control device. When the network node is a base station of the neighboring cell of the energy-saving cell, the base station of the neighboring cell of the energy-saving cell obtains information for configuring the serviceless MBSFN sub-frames of the energy-saving cell, and configures the serviceless MBSFN sub-frames of the neighboring cell by alternating the serviceless MBSFN sub-frames of the neighboring cell with the serviceless MBSFN sub-frames of the energy-saving cell according to the information for configuring the serviceless MBSFN sub-frames of the energy-saving cell. 
         [0030]    The following describes the method for configuring the energy-saving cell, supposing that cell A and cell C are under the same base station, for example, evolved NodeB (eNB) 1 , and cell B is under eNB 2 , as shown in  FIG. 2 . In this embodiment, cell A, cell B, and cell C are adjacent to one another; and cell A is an energy-saving cell for which serviceless MBSFN sub-frames are configured. As shown in  FIG. 4 a   , in cell A, cell B, and cell C, sub-frame  0 , sub-frame  4 , sub-frame  5 , and sub-frame  9  are non-configurable unicast sub-frames, and sub-frame  1  is a sub-frameservice MBSFN sub-frame. eNB 1  configures sub-frame  6 , sub-frame  7 , and sub-frame  8  of cell A as serviceless MBSFN sub-frames, and configures sub-frame  2  and sub-frame  3  as configurable unicast sub-frames. 
         [0031]    As shown in  FIG. 3 , the method for configuring an energy-saving cell in this embodiment specifically includes the following steps: 
         [0032]      301 : eNB 2  of cell B and eNB 1  of cell C obtain information for configuring serviceless MBSFN sub-frames of cell A respectively. 
         [0033]    Specifically, eNB 2  of cell B may obtain information for configuring serviceless MBSFN sub-frames of cell A, where the information is sent by eNB 1  through an X2 interface and may be “MBSFN sub-frame info”, for example. In other words, eNB 1  sends the information for configuring the serviceless MBSFN sub-frames of cell A to eNB 2  in the neighboring cell “cell B” through the X2 interface, and notifies eNB 2  that sub-frame  6 , sub-frame  7 , and sub-frame  8  in cell A are serviceless MBSFN sub-frames. Meanwhile, because cell A and cell C are under the same eNB, the process of eNB 1  of cell C obtaining the information for configuring the serviceless MBSFN sub-frames of cell A may be regarded as being implemented inside eNB 1 . For example, eNB 1  reads the locally stored information for configuring serviceless MBSFN sub-frames of cell A. 
         [0034]    Optionally, after eNB 1  configures serviceless MBSFN sub-frames of energy-saving cell A, as shown by dotted lines in  FIG. 2 , eNB 2  may obtain information for configuring serviceless MBSFN sub-frames of cell A from eNB 1  through the X2 interface, or an S1 interface, or an M2 interface, or an itf-N interface. Specifically, eNB 1  may transmit the information for configuring the serviceless MBSFN sub-frames of cell A to eNB 2  through the itf-N interface or the M2 interface, that is, through the itf-N interface, the information for configuring the serviceless MBSFN sub-frames of cell A, which is sent by eNB 1 , may be forwarded by an Operation Administration Maintenance (OAM) system to eNB 2 ; and, through the M2 interface, the information for configuring the serviceless MBSFN sub-frames of cell A, which is sent by eNB 1 , may be forwarded by a Multi-cell/multicast Coordination Entity (MCE) to eNB 2 . Optionally, through the S1 interface, the information for configuring the serviceless MBSFN sub-frames of cell A, which is sent by eNB 1 , may be forwarded by a Mobility Management Entity (MME) to eNB 2 . 
         [0035]      302 : eNB 2  configures serviceless MBSFN sub-frames of cell B by alternating the serviceless MBSFN sub-frames of cell B with the serviceless MBSFN sub-frames of cell A according to the information for configuring the serviceless MBSFN sub-frames. 
         [0036]    Specifically, as shown in  FIG. 4 b   , eNB 2  may configure sub-frame  2 , sub-frame  3 , and sub-frame  8  in cell B as serviceless MBSFN sub-frames, and configure sub-frame  6  and sub-frame  7  as configurable unicast sub-frames, according to the information for configuring the serviceless MBSFN sub-frames of cell A. In this case, the serviceless MBSFN sub-frames numbered 6, 7, and 8 in cell A partly alternate with the serviceless MBSFN sub-frames numbered 2, 3, and 8 in cell B (only sub-frame  8  overlaps). 
         [0037]      303 : eNB 2  sends the information for configuring the serviceless MBSFN sub-frames of cell B to eNB 1  of the neighboring cells (namely, cell A and cell C) of cell B. 
         [0038]      304 : eNB 1  obtains the information for configuring the serviceless MBSFN sub-frames of cell B, and configures serviceless MBSFN sub-frames of cell C by alternating the serviceless MBSFN sub-frames of cell C with the serviceless MBSFN sub-frames of cell A and cell B according to the information for configuring the serviceless MBSFN sub-frames of cell B and the information for configuring the serviceless MBSFN sub-frames of cell A. 
         [0039]    Specifically, as shown in  FIG. 4 c   , eNB 1  may configure sub-frame  2 , sub-frame  3 , and sub-frame  6  in cell C as serviceless MBSFN sub-frames, and configure sub-frame  7  and sub-frame  8  as configurable unicast sub-frames, according to the information for configuring the serviceless MBSFN sub-frames of cell A and cell B. In this case, the serviceless MBSFN sub-frames numbered 2, 3, and 6 in cell C partly alternate with the serviceless MBSFN sub-frames numbered 6, 7, and 8 in cell A, and the serviceless MBSFN sub-frames numbered 2, 3, and 8 in cell B. 
         [0040]    Optionally, after step  301 , step  3011  or step  3011 ′ may also be included. 
         [0041]      3011 : When eNB 1  of cell A detects that interference exceeds a preset threshold, eNB 1  sends TOI information (for example, a TOI) to the eNB of the neighboring cell of cell A. After receiving the TOI information, eNB 2  performs step  302 . 
         [0042]      3011 ′: When cell A uses a high-interference sub-frame, eNB 1  of cell A sends THII information (for example, THII) to the eNB of the neighboring cell of cell A. After receiving the THII information, eNB 2  performs step  302 . 
         [0043]    Accordingly, after step  303 , step  3031  and step  3031 ′ may also be included. 
         [0044]      3031 : When eNB 2  of cell B detects that the interference exceeds a preset threshold, eNB 2  sends TOI information (for example, a TOI) to the eNB of the neighboring cell of cell B. After receiving the TOI information, eNB 1  performs step  304 . 
         [0045]      3031 ′: When cell B uses a high-interference sub-frame, eNB 2  sends THII information (for example, THII) to the eNB of the neighboring cell. After receiving the THII information, eNB 1  performs step  304 . 
         [0046]    Optionally, when the serviceless MBSFN sub-frames of the energy-saving cell change, the eNB of the energy-saving cell notifies the eNB of the neighboring cell of the change of configuration of the serviceless MBSFN sub-frames. The eNB of the neighboring cell of the energy-saving cell may configure the serviceless MBSFN sub-frames of the neighboring cell according to the change of the serviceless MBSFN sub-frames of the energy-saving cell. The change of the serviceless MBSFN sub-frames of the energy-saving cell includes: increasing or decreasing the serviceless MBSFN sub-frames of the energy-saving cell; and the decreasing of the serviceless MBSFN sub-frames of the energy-saving cell includes: sending, by the eNB of the energy-saving cell, the MBMS in the serviceless MBSFN sub-frames of the energy-saving cell, or configuring, by the eNB of the energy-saving cell, the serviceless MBSFN sub-frames of the energy-saving cell as unicast sub-frames or other service sub-frames. For example, when the serviceless MBSFN sub-frames in cell A decrease to zero, cell A quits an energy-saving state, and the serviceless MBSFN sub-frames of cell A are used for sending MBMS, or are configured as unicast sub-frames or other service sub-frames. In this case, eNB 1  sends a notification message to eNB 2  (and eNB 1 ) of cell B and cell C to notify eNB 2  (and eNB 1 ) of the change of the serviceless MBSFN sub-frames of cell A. eNB 1  and eNB 2  may configure serviceless MBSFN sub-frames of cell C and cell B respectively according to the change of the serviceless MBSFN sub-frames of cell A. 
         [0047]    In the method for configuring the energy-saving cell in this embodiment, the information for configuring the serviceless MBSFN sub-frames of the energy-saving cell is transmitted between eNBs, the configuration of the serviceless MBSFN sub-frames between neighboring cells is coordinated, and the serviceless MBSFN sub-frames of a cell alternate with the serviceless MBSFN sub-frames of the neighboring cells, thereby reducing interference between neighboring cells and improving stability of the system. 
         [0048]    If the network node is a centralized control device, as shown in  FIG. 5 , the method for configuring an energy-saving cell includes the following steps: 
         [0049]      501 : The centralized control device receives the information for configuring the serviceless MBSFN sub-frames of the energy-saving cell from a base station. 
         [0050]      502 : The centralized control device configures the serviceless MBSFN sub-frames for a neighboring cell of the energy-saving cell by alternating the serviceless MBSFN sub-frames of the neighboring cell with the serviceless MBSFN sub-frames of the energy-saving cell according to the information for configuring the serviceless MBSFN sub-frames of the energy-saving cell. 
         [0051]    In practice, the centralized control device may be an OAM system, or an MCE, or another centralized control device capable of implementing step  501  and step  502 . 
         [0052]    The following describes the method for configuring the energy-saving cell in detail, supposing that cell A and cell C are under the same base station, for example, eNB 1 , and cell B is under eNB 2 , as shown in  FIG. 2 . In this embodiment, an OAM system is taken as an example of the centralized control device. In this embodiment, cell A, cell B, and cell C are adjacent to one another; and cell A is an energy-saving cell for which serviceless MBSFN sub-frames are configured. As shown in  FIG. 4 a   , in cell A, cell B, and cell C, sub-frame  0 , sub-frame  4 , sub-frame  5 , and sub-frame  9  are non-configurable unicast sub-frames, and sub-frame  1  is a sub-frameservice MBSFN sub-frame. eNB 1  configures sub-frame  6 , sub-frame  7 , and sub-frame  8  of cell A as serviceless MBSFN sub-frames, and configures sub-frame  2  and sub-frame  3  as configurable unicast sub-frames. As shown in  FIG. 6 , the method for configuring an energy-saving cell in this embodiment includes the following steps. 
         [0053]      601 : The OAM system obtains the information for configuring the serviceless MBSFN sub-frames of cell A. 
         [0054]    Specifically, eNB 1  transmits the information (such as “MBSFN sub-frame info”) for configuring the serviceless MBSFN sub-frames of cell A to the OAM system through an itf-N interface to notify the OAM system that sub-frame  6 , sub-frame  7 , and sub-frame  8  in cell A are serviceless MBSFN sub-frames. 
         [0055]      602 : The OAM system configures serviceless MBSFN sub-frames of cell B and cell C by alternating the serviceless MBSFN sub-frames of cell A with the serviceless MBSFN sub-frames of cell B and the serviceless MBSFN sub-frames of cell C according to the information for configuring the serviceless MBSFN sub-frames. 
         [0056]    Specifically, as shown in  FIG. 4 c   , the OAM system may configure sub-frame  2 , sub-frame  3 , and sub-frame  8  in cell B as serviceless MBSFN sub-frames, configure sub-frame  6  and sub-frame  7  in cell B as configurable unicast sub-frames, configure sub-frame  2 , sub-frame  3 , and sub-frame  6  in cell C as serviceless MBSFN sub-frames, and configure sub-frame  7  and sub-frame  8  in cell C as configurable unicast sub-frames according to the information for configuring the serviceless MBSFN sub-frames of cell A. In this case, the serviceless MBSFN sub-frames numbered 6, 7, and 8 in cell A alternate with the serviceless MBSFN sub-frames numbered 2, 3, and 8 in cell B, and the serviceless MBSFN sub-frames numbered 2, 3, and 6 in cell C. 
         [0057]    Optionally, after step  601 , step  6011  or step  6011 ′ may also be included. 
         [0058]      6011 : When eNB 1  of cell A detects that the interference exceeds a preset threshold, eNB 1  sends TOI information (for example, a TOI) to the OAM system. After receiving the TOI information, the OAM system performs step  602 . 
         [0059]      6011 ′: When cell A uses a high-interference sub-frame, eNB 1  sends THII information (for example, THII) to the OAM system. After receiving the THII information, the OAM system performs step  602 . 
         [0060]    Optionally, when the serviceless MBSFN sub-frames of cell A change, the OAM system receives a notification message sent by eNB 1 , where the notification message is used for indicating the change of the serviceless MBSFN sub-frames of cell A. The OAM system may configure the serviceless MBSFN sub-frames of cell B and cell C according to the change of configuration of the serviceless MBSFN sub-frames of cell A. The change of the serviceless MBSFN sub-frames of cell A includes: increasing or decreasing the serviceless MBSFN sub-frames of cell A. More specifically, the decreasing of the serviceless MBSFN sub-frames of cell A includes: sending an MBMS in the serviceless MBSFN sub-frames of cell A, or configuring the serviceless MBSFN sub-frames of cell A as unicast sub-frames or other service sub-frames. 
         [0061]    In another embodiment, the OAM system in the foregoing embodiment may be replaced with an MCE, and accordingly, the itf-N interface is replaced with an M2 interface. Persons of ordinary skill in the art understand that the OAM system in the foregoing embodiment may be replaced with another device capable of implementing centralized control. 
         [0062]    In the method for configuring the energy-saving cell in this embodiment, the centralized control device configures the serviceless MBSFN sub-frames of the neighboring cells, and therefore, the serviceless MBSFN sub-frames of a cell alternate with the serviceless MBSFN sub-frames of the neighboring cells, thereby reducing interference between neighboring cells and improving stability of the system. 
         [0063]    In another embodiment, if the MBSFN sub-frames are not distinguished between the service MBSFN sub-frames and the serviceless MBSFN sub-frames, it is deemed that all MBSFN sub-frames are energy-saving MBSFN sub-frames. As shown in  FIG. 7 , it is assumed that cell A, cell B and cell C need to be configured, and sub-frame  0  and sub-frame  1  in cell A, cell B and cell C are MBMS sub-frames. If sub-frames  2 - 5  in cell A are configured as energy-saving MBSFN sub-frames and sub-frames  6 - 9  in cell A are configured as unicast sub-frames, it is appropriate to configure sub-frames  6 - 9  in cell B as energy-saving MBSFN sub-frames, configure sub-frames  2 - 5  in cell B as unicast sub-frames, configure sub-frames  4 - 7  in cell C as energy-saving MBSFN sub-frames, and configure sub-frame  2 , sub-frame  3 , sub-frame  8 , and sub-frame  9  in cell C as unicast sub-frames. For detailed configuration method, reference may be made to the previous embodiment, and details will not be described herein again. 
         [0064]    As shown in  FIG. 8 , a base station  800  provided in an embodiment of the present application includes an obtaining unit  810  and a configuring unit  820 . 
         [0065]    The obtaining unit  810  is configured to obtain information for configuring serviceless MBSFN sub-frames of an energy-saving cell; and the configuring unit  820  configures serviceless MBSFN sub-frames of a neighboring cell of the energy-saving cell by alternating the serviceless MBSFN sub-frames of the neighboring cell with the serviceless MBSFN sub-frames of the energy-saving cell according to the information for configuring the serviceless MBSFN sub-frames of the energy-saving cell. 
         [0066]    Optionally, the obtaining unit  810  may receive the information for configuring the serviceless MBSFN sub-frames of the energy-saving cell through an X2 interface, or an S1 interface, or an M2 interface, or an itf-N interface. 
         [0067]    Optionally, the configuring unit  820  is further adapted to configure the serviceless MBSFN sub-frames of the neighboring cell of the energy-saving cell according to the received information for configuring the serviceless MBSFN sub-frames of the energy-saving cell after receiving TOI information and/or THII information sent by the base station of the energy-saving cell. 
         [0068]    Optionally, when the base station  800  serves as a base station of the energy-saving cell, the base station may further include a detecting unit  830 , which is configured to: send TOI information to the base station of the neighboring cell of the energy-saving cell when detecting that interference of the energy-saving cell exceeds a preset threshold, or send THII information to the base station of the neighboring cell of the energy-saving cell when detecting that the energy-saving cell uses a high-interference sub-frame. 
         [0069]    Optionally, when the base station  800  serves as a base station of the energy-saving cell, the base station may further include a notifying unit  840 , which is configured to send a notification message to the base station of the neighboring cell of the energy-saving cell when the serviceless MBSFN sub-frames of the energy-saving cell change, where the notification message is used for indicating the change of the serviceless MBSFN sub-frames of the energy-saving cell. The change of the serviceless MBSFN sub-frames of the energy-saving cell includes: increasing or decreasing the serviceless MBSFN sub-frames of the energy-saving cell; and the decreasing of the serviceless MBSFN sub-frames of the energy-saving cell includes: sending an MBMS in the serviceless MBSFN sub-frames of the energy-saving cell, or configuring the serviceless MBSFN sub-frames of the energy-saving cell as unicast sub-frames or other service sub-frames. When the serviceless MBSFN sub-frames in the energy-saving cell decrease to zero, the energy-saving cell quits an energy-saving state. 
         [0070]    Optionally, when the base station  800  serves as a base station of the neighboring cell, the base station may further include a receiving unit, which is configured to receive the notification message sent by the energy-saving cell. In this case, the configuring unit  820  may be further adapted to configure the serviceless MBSFN sub-frames of the neighboring cell according to the change of the serviceless MBSFN sub-frames indicated in the notification message. 
         [0071]    The base station  800  provided in this embodiment can implement the method embodiment shown in  FIG. 3 . In the technical solution provided in this embodiment, the information for configuring the serviceless MBSFN sub-frames of the energy-saving cell is transmitted between base stations, the configuration of the serviceless MBSFN sub-frames between neighboring cells is coordinated, and the serviceless MBSFN sub-frames of a cell alternate with the serviceless MBSFN sub-frames of the neighboring cells, thereby reducing interference between neighboring cells and improving stability of the system. 
         [0072]    As shown in  FIG. 9 , a centralized control device  900  provided in an embodiment of the present application includes a receiving unit  910  and a configuring unit  920 . 
         [0073]    The receiving unit  910  is configured to receive information for configuring serviceless MBSFN sub-frames of an energy-saving cell from a base station. The configuring unit  920  is adapted to configure serviceless MBSFN sub-frames for a neighboring cell of the energy-saving cell by alternating the serviceless MBSFN sub-frames of the neighboring cell with the serviceless MBSFN sub-frames of the energy-saving cell according to the information for configuring the serviceless MBSFN sub-frames of the energy-saving cell received by the receiving unit  910 . 
         [0074]    Optionally, the centralized control device may be an OAM system, or an MCE, or another device capable of implementing centralized control. Persons skilled in the art understand that in some scenarios, the base station may also serve as a centralized control device to configure serviceless MBSFN sub-frames for the cells under other base station s. 
         [0075]    Optionally, after receiving TOI information and/or THII information sent by the base station, the configuring unit  920  configures the serviceless MBSFN sub-frames of the neighboring cell of the energy-saving cell according to the information for configuring the serviceless MBSFN sub-frames of the energy-saving cell. 
         [0076]    Optionally, the receiving unit  910  is further configured to receive a notification message sent by the base station of the energy-saving cell, where the notification message is used for indicating change of the serviceless MBSFN sub-frames of the energy-saving cell. The change of the serviceless MBSFN sub-frames of the energy-saving cell includes: increasing or decreasing the serviceless MBSFN sub-frames of the energy-saving cell; and the decreasing of the serviceless MBSFN sub-frames of the energy-saving cell includes: sending an MBMS in the serviceless MBSFN sub-frames of the energy-saving cell, or configuring the serviceless MBSFN sub-frames of the energy-saving cell as unicast sub-frames or other service sub-frames. When the serviceless MBSFN sub-frames in the energy-saving cell decrease to zero, the energy-saving cell quits an energy-saving state. 
         [0077]    Optionally, after the receiving unit  910  receives the notification message, the configuring unit  920  may further configure the serviceless MBSFN sub-frames of the neighboring cell according to the change of the serviceless MBSFN sub-frames indicated in the notification message. 
         [0078]    In the technical solution provided in this embodiment, the centralized control device coordinates configuration of the serviceless MBSFN sub-frames between neighboring cells, and therefore, the serviceless MBSFN sub-frames of a cell alternate with the serviceless MBSFN sub-frames of the neighboring cells, thereby reducing interference between neighboring cells and improving stability of the system. 
         [0079]    As shown in  FIG. 10 , an embodiment of the present application provides a system for configuring an energy-saving cell. The system includes the centralized control device  900  shown in  FIG. 9  and a base station  1100  of an energy-saving cell. For the structure and functions of the centralized control device  900 , reference may be made to the embodiments described in the foregoing, and details will not be described herein again. 
         [0080]    The base station  1100  of the energy-saving cell sends information for configuring serviceless MBSFN sub-frames of the energy-saving cell to the centralized control device  900 . 
         [0081]    Optionally, the base station  1100  of the energy-saving cell is further configured to send TOI information to the centralized control device  900  after detecting that interference of the energy-saving cell exceeds a preset threshold, or sends THII information to the centralized control device  900  after detecting that the energy-saving cell uses a high-interference sub-frame. 
         [0082]    Optionally, the base station  1100  of the energy-saving cell is further configured to send a notification message to the centralized control device  900  when the serviceless MBSFN sub-frames of the energy-saving cell change, where the notification message is used for indicating the change of the serviceless MBSFN sub-frames of the energy-saving cell. 
         [0083]    The change of the serviceless MBSFN sub-frames of the energy-saving cell includes: increasing or decreasing the serviceless MBSFN sub-frames of the energy-saving cell; and the decreasing of the serviceless MBSFN sub-frames of the energy-saving cell includes: sending an MBMS in the serviceless MBSFN sub-frames of the energy-saving cell, or configuring the serviceless MBSFN sub-frames of the energy-saving cell as unicast sub-frames or other service sub-frames. When the serviceless MBSFN sub-frames in the energy-saving cell decrease to zero, the energy-saving cell quits an energy-saving state. 
         [0084]    In the system for configuring an energy-saving cell in this embodiment, the centralized control device coordinates configuration of the serviceless MBSFN sub-frames between neighboring cells, and therefore, the serviceless MBSFN sub-frames of a cell alternate with the serviceless MBSFN sub-frames of the neighboring cells, thereby reducing interference between neighboring cells and improving stability of the system. 
         [0085]    Persons of ordinary skill in the art should understand that all or part of the steps of the method of the present application may be implemented by a computer program instructing relevant hardware. The program may be stored in a computer readable storage medium. When the program is run, the program executes the method specified in any embodiment of the present application. The storage medium may be a magnetic disk, an optical disk, Read-Only Memory (ROM), or Random Access Memory (RAM). 
         [0086]    Disclosed in the foregoing are the objectives, technical solution and benefits of the embodiments of the present application. It should be understood that, the above descriptions are merely exemplary embodiments of the present application, but are not intended to limit the protection scope of the present application. Any modification, equivalent replacement, or improvement made by persons skilled in the art without creative efforts should fall within the protection scope of the present application.