Abstract:
The present invention relates to the field of communications technologies, and in particular to a method, a base station and a system for adjusting a cell wireless configuration parameter. The method includes: obtaining system performance information of an adjustment participating cell and a peripheral cell of the adjustment participating cell under different wireless-configuration-related information; and adjusting a wireless configuration parameter of the adjustment participating cell according to the system performance information of the adjustment participating cell and the peripheral cell of the adjustment participating cell. According to the technical solutions provided in the embodiments of the present invention, by analyzing the system performance information of the adjustment participating cell and the system performance information of the peripheral cell of the adjustment participating cell at the adjustment participating cell, an adjustment work load can be decentralized, and a coverage adjustment of the entire system is accelerated.

Description:
CROSS-REFERENCE TO RELATED APPLICATIONS 
       [0001]    This application is a continuation of International Application No. PCT/CN2010/074109, filed on Jun. 19, 2010, which claims priority to Chinese Patent Application No. 200910139475.8, filed with the Chinese Patent Office on Jun. 19, 2009 both of which are hereby incorporated by reference in their entireties. 
     
    
     FIELD OF THE INVENTION 
       [0002]    The present invention relates to the field of communications technologies, and in particular, to a method, a base station and a system for adjusting a cell wireless configuration parameter. 
       BACKGROUND OF THE INVENTION 
       [0003]    In a mobile communication system constituted by cellular cells, a cell is a communication area of certain coverage that provides services for mobile users. One base station is in charge of several cells, or one eNB may be in charge of one cell. In a Long Term Evolution (Long Term Evolution, LTE) system, a base station is called an evolved Node B (evolved Node B, eNodeB), which is hereinafter referred to as an eNB for short. 
         [0004]    A wireless mobile network is currently divided into two parts, namely, a Core Net (Core net, CN) and a Radio Access Network (Radio Access Network, RAN). The RAN performs an access service of a User Equipment (User Equipment, UE), and forwards service data to the CN or forwards service data received from the CN to the UE. In the LTE system, the RAN is constituted by eNBs.  FIG. 1  is a structural diagram of the RAN in the LTE system in the prior art. 
         [0005]    If some problems occur in the RAN, for example, failure of an eNB power source, failure of a link (Si link) from the eNB to the CN, failure of a baseband processor of the eNB, failure of an antenna feeder system, or failure of an antenna, these failures may eventually cause deterioration of Quality of Service (QoS) of users in one or more cells, and even cause service interruption so that the users are forced to switch from an active state to an idle state, or a traffic interruption or disconnection occurs. This is often referred to as a cell outage (cell outage). In this scenario, coverage and capacity losses are generally caused. 
         [0006]    In the prior art, after it is determined that the cell outage occurs, a network manager calculates, based on a centralized algorithm or a planning tool, wireless parameter configurations of cells that need to be adjusted, and sends the wireless parameter configurations to the cells that need to be adjusted. The cells that need to be adjusted adjust respective configurations according to the wireless parameter configurations, so as to compensate for the coverage or capacity in the area where the problem occurs. Here, the cells that need to be adjusted include an adjustment participating cell and a peripheral cell. The adjustment participating cell refers to a cell which is located on the periphery of a failed cell and compensates for the coverage and capacity losses caused by the failed cell. The peripheral cell refers to a cell adjacent to the adjustment participating cell. 
         [0007]    In a process for implementing the present invention, the inventor of the present invention finds that: In the prior art, the RAN needs to collect a large amount of information, and sends the information to the network manager, which increases a backhaul (backhaul) overhead of the network, so that it is rather slow for the system to discover a failure, locate a failed cell, and change a wireless parameter of the cell. 
       SUMMARY OF THE INVENTION 
       [0008]    According to one aspect, the present invention provides a method for adjusting a cell wireless configuration parameter. The method includes: obtaining system performance information of an adjustment participating cell and a peripheral cell of the adjustment participating cell under different wireless-configuration-related information; and adjusting a wireless configuration parameter of the adjustment participating cell according to the system performance information of the adjustment participating cell and the peripheral cell of the adjustment participating cell. 
         [0009]    According to another aspect, the present invention provides a base station. The base station includes: an obtaining unit, configured to obtain system performance information of an adjustment participating cell and a peripheral cell of the adjustment participating cell under different wireless-configuration-related information; and an adjusting unit, configured to adjust a wireless configuration parameter of the adjustment participating cell according to the system performance information of the adjustment participating cell and the peripheral cell of the adjustment participating cell. 
         [0010]    According to another aspect, the present invention further provides a communication system. The system includes the foregoing base station. 
         [0011]    According to the embodiments of the present invention, by analyzing the system performance information of the adjustment participating cell and the system performance information of the peripheral cell of the adjustment participating cell at the adjustment participating cell, a centralized adjustment work load can be decentralized, and an coverage adjustment of the entire system is accelerated. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0012]      FIG. 1  is a structural diagram of an RAN in the prior art; 
           [0013]      FIG. 2  is a flow chart of an embodiment of a method for adjusting a cell wireless configuration parameter according to an embodiment of the present invention; 
           [0014]      FIG. 3  is a cell coverage diagram according to an embodiment of the present invention; 
           [0015]      FIGS. 4A and 4B  are data flow diagrams of an embodiment of a method for adjusting a cell wireless configuration parameter according to an embodiment of the present invention; 
           [0016]      FIG. 5  is a data flow diagram of another embodiment of a method for adjusting a cell wireless configuration parameter according to an embodiment of the present invention; 
           [0017]      FIG. 6  is a data flow diagram of another embodiment of a method for adjusting cell wireless configuration parameters according to an embodiment of the present invention; 
           [0018]      FIG. 7  is a data flow diagram of another embodiment of a method for adjusting cell wireless configuration parameters according to an embodiment of the present invention; 
           [0019]      FIG. 8  is a schematic structural diagram of an eNB according to an embodiment of the present invention; and 
           [0020]      FIG. 9  is another schematic structural diagram of an eNB according to an embodiment of the present invention. 
       
    
    
     DETAILED DESCRIPTION OF THE EMBODIMENTS 
       [0021]    In order to make the objectives, technical solutions, and advantages of the present invention more clearly, embodiments of the present invention are further described in detail below with reference to the embodiments and the accompanying drawings. Here, the exemplary embodiments of the present invention and descriptions of the exemplary embodiments of the present invention are only intended to explain the present invention, but are not constructed as limitations to the present invention. 
         [0022]    The embodiments of the present invention provide a method, a base station and a system for adjusting a cell wireless configuration parameter. 
         [0023]      FIG. 2  is a flow chart of an embodiment of a method for adjusting a cell wireless configuration parameter according to an embodiment of the present invention. The method specifically includes the following content. 
         [0024]      201 : Obtain system performance information of an adjustment participating cell and a peripheral cell of the adjustment participating cell under different wireless-configuration-related information. 
         [0025]    The wireless-configuration-related information includes a wireless configuration number and/or a wireless configuration parameter; and the wireless configuration parameter includes at least one piece of the following information: parameters such as transmitting power of an antenna, an antenna downtilt angle, and an antenna azimuth angle. The system performance information includes at least one piece of the following information: a throughput rate, a capacity, an average channel capacity, coverage, and QoS. 
         [0026]      202 : Adjust a wireless configuration parameter of the adjustment participating cell according to the system performance information of the adjustment participating cell and the peripheral cell of the adjustment participating cell. 
         [0027]    As an embodiment of the present invention, in the foregoing step  201 , the peripheral cell transfers the system performance information of the peripheral cell under the different wireless-configuration-related information to the adjustment participating cell. The peripheral cell obtains the system performance information of the peripheral cell under the different wireless-configuration-related information of the adjustment participating cell by using history measurement information of the peripheral cell, and geographical information of the corresponding adjustment participating cell, antenna height of the corresponding adjustment participating cell, an antenna downtilt angle of the corresponding adjustment participating cell, and an antenna azimuth angle of the corresponding adjustment participating cell. The geographical information includes station address information, and may also include a channel model and/or cell shape and size. The adjustment participating cell may transfer the different wireless configuration parameters to the peripheral cell of the adjustment participating cell, and the peripheral cell may calculate the system performance of the peripheral cell according to a transfer sequence of the adjustment participating cell, so that the peripheral cell may match the system performance with the wireless configuration number when transferring the system performance. As an alternative embodiment, the wireless configuration number may be sent when the different wireless configuration parameters are sent by the adjustment participating cell, so as to notify the peripheral cell that which wireless-configuration-related information matches with the currently-calculated system performance. 
         [0028]    As another embodiment of the present invention, in the foregoing step  201 , the adjustment participating cell obtains the history measurement information at each geographical location in the peripheral cell and the geographical information of the peripheral cell, and according to the history measurement information at each geographical location in the peripheral cell and the geographical information of the peripheral cell, and the history measurement information at each geographical location in the adjustment participating cell and the geographical information of the adjustment participating cell, the adjustment participating cell obtains the system performance information of the peripheral cell under the different wireless-configuration-related information of the corresponding adjustment participating cell. 
         [0029]    As an embodiment of the present invention, before the foregoing step  202 , the method further includes: exchanging the system performance information of the adjustment participating cells and the system performance information of the peripheral cells of the adjustment participating cells between the adjustment participating cells. Specifically, the system performance information of the adjustment participating cells and the system performance information of the peripheral cells of the adjustment participating cells may be combined into total system performance information, and the total system performance information is exchanged between the adjustment participating cells. 
         [0030]    As another embodiment of the present invention, the foregoing step  202  may specifically include: when the system performance information of the adjustment participating cell and the system performance information of the peripheral cell of the adjustment participating cell are greater than or equal to a set value after an operation, adjusting the wireless configuration parameter of the adjustment participating cell according to the current corresponding wireless-configuration-related information; or obtaining wireless-configuration-related information corresponding to the maximum system performance by comparing the total system performance of all the adjustment participating cells and the peripheral cells of all the adjustment participating cells under the different wireless-configuration-related information, and adjusting the wireless configuration parameter of the adjustment participating cell according to the current wireless-configuration-related information. The operation includes: adding a throughput rate of the adjustment participating cell to a throughput rate of the peripheral cell of the adjustment participating cell; or adding a capacity of the adjustment participating cell to a capacity of the peripheral cell of the adjustment participating cell. The capacity includes a channel capacity or a user capacity. 
         [0031]    According to the foregoing embodiments, the adjustment participating cell may perform a calculation to decentralize a calculation work load, so that compared with a centralized processing mode, an adjustment speed is fast and a line overhead is low. 
         [0032]      FIG. 3  is a cell coverage diagram according to an embodiment of the present invention. Each cell may have one eNB, or three cells may share one eNB as shown in  FIG. 3 . In the following embodiments, each cell having one eNB is taken as an example for description. 
         [0033]      FIGS. 4A and 4B  are data flow diagrams of an embodiment of a method for adjusting a cell wireless configuration parameter according to an embodiment of the present invention. In this embodiment, referring to  FIG. 3 , for example, a cell  20  fails, and corresponding adjustment participating cells include: a cell  6 , cell  2 , cell  3 , cell  18 , cell  19 , and cell  21 , where peripheral cells of the cell  6  include: a cell  4 , cell  5 , and cell  7 ; peripheral cells of the cell  2  include: a cell  1  and the cell  4 ; peripheral cells of the cell  3  include: the cell  1  and cell  17 ; peripheral cells of the cell  18  include: a cell  15 , cell  16 , and the cell  17 ; peripheral cells of the cell  19  include: a cell  10 , cell  13 , and the cell  15 ; and peripheral cells of the cell  21  include the cell  7 , a cell  9 , and the cell  10 . As shown in  FIGS. 4A and 4B , the method provided in this embodiment specifically includes the following content. 
         [0034]      401 : Peripheral cells of adjustment participating cells obtain related information of the adjustment participating cells. 
         [0035]    The related information of the adjustment participating cells includes geographical information of the adjustment participating cells and current wireless-configuration-related information of the adjustment participating cells; and the geographical information includes station address information (location). Optionally, the geographical information may also include a channel model and/or cell shape and size. For example, the peripheral cells  10 ,  13 , and  15  of the adjustment participating cell  19  respectively obtain geographical information of the cell  19 . 
         [0036]    Optionally, the peripheral cells may store matching relations between wireless configuration numbers of the adjustment participating cells and wireless configuration parameters of the adjustment participating cells, so that the peripheral cells may obtain current wireless configuration numbers of the adjustment participating cells, and then obtain wireless configuration parameters corresponding to the wireless configuration numbers by matching; or the peripheral cells may obtain the wireless configuration parameters of the adjustment participating cells, and then obtain the wireless configuration numbers corresponding to the wireless configuration parameters by matching. 
         [0037]      402 : The peripheral cells of the adjustment participating cells send related information of the peripheral cells to the adjustment participating cells. The related information of the peripheral cells includes geographical information of the peripheral cells and wireless-configuration-related information of the peripheral cells, and may also include history measurement information at each geographical location in the peripheral cells. The geographical information of the peripheral cells includes station address information (location), and may also include a channel model and/or cell shape and size. The history measurement information at each geographical location in the peripheral cells includes path loss, and may also include at least one of interference information and signal quality. For example, the peripheral cells  10 ,  13 , and  15  respectively send the geographical information of the peripheral cells and the history measurement information at each geographical location in the peripheral cells to the corresponding adjustment participating cell  19 . It should be noted that, step  402  may be performed at any time before step  405 , and may not necessarily be performed between step  401  and step  403 . 
         [0038]      403 : The peripheral cells of the adjustment participating cells calculate (for example, calculate through a simulation method) and obtain the system performance information (including at least one piece of the following information: a throughput rate, an average channel capacity, coverage, and QoS) of the peripheral cells under different wireless-configuration-related information of the adjustment participating cells, based on the history measurement information at each geographical location in the peripheral cells and the geographical information of the adjustment participating cells. For example, the peripheral cells  10 ,  13 , and  15  respectively calculate the system performance when the adjustment participating cell  19  corresponding to the peripheral cells  10 ,  13 , and  15  is under the different wireless-configuration-related information. The history measurement information at each geographical location in the peripheral cells may include path loss of each geographical location, and may also include at least one of interference information and signal quality, where the signal quality includes, for example, a Signal to Noise Ratio (SNR). 
         [0039]      404 : The peripheral cells of the adjustment participating cells feed back at least one piece of the system performance information to the adjustment participating cells. For example, the peripheral cells  10 ,  13 , and  15  respectively transfer the multiple pieces of system performance information obtained in the foregoing step  403  to the adjustment participating cell  19 . When the system performance information of the peripheral cells under the different wireless-configuration-related information of the corresponding adjustment participating cells is transferred to the adjustment participating cells, the peripheral cells may also transfer different wireless configuration parameters and/or different wireless configuration numbers, where the different wireless configuration parameters and/or different wireless configuration numbers correspond to the different system performance information, to the adjustment participating cells, where the wireless configuration parameters include at least one piece of the following information: transmitting power of an antenna, an antenna azimuth angle, and an antenna downtilt angle, so that the adjustment participating cells may know the specific wireless configuration serial number under which the system performance transferred from the peripheral cells is. 
         [0040]      405 : The adjustment participating cells calculate (including a simulation calculation method) and obtain the system performance information of the adjustment participating cells under the different wireless-configuration-related information of the adjustment participating cells, based on the history measurement information at each geographical location in the adjustment participating cells and the history measurement information at each geographical location in the peripheral cells of the adjustment participating cells. The adjustment participating cells exchange the system performance information of the adjustment participating cells under the wireless-configuration-related information and the system performance information of the multiple peripheral cells of the adjustment participating cells with the system performance information of the other adjustment participating cells; or combine the performance information of the multiple cells under the wireless-configuration-related information into total system performance information, and then exchange the system performance information with the other adjustment participating cells. During the exchanging of the system performance information between the adjustment participating cells, the different wireless configuration numbers and/or different wireless configuration parameters, where the different wireless configuration numbers and/or different wireless configuration parameters correspond to the different system performance, may also be exchanged, so that the adjustment participating cells may know the wireless configuration serial number corresponding to the currently-exchanged system performance. 
         [0041]    For example, the adjustment participating cell  19  calculates the system performance information of the cell  19  under different wireless-configuration-related information, and exchanges the system performance information of the cell  19  under all the wireless-configuration-related information and the system performance information of the peripheral cells  10 ,  13 , and  15  under the wireless-configuration-related information with the system performance information of the adjustment participating cells  6 ,  2 ,  3 ,  18 , and  21 . Alternatively, the adjustment participating cell  19  adds the system performance information of the cell  19  under certain wireless-configuration-related information to the system performance information of the peripheral cells of the adjustment participating cells. For example, the cell  19  adds a throughput rate of the cell  19  under certain wireless-configuration-related information to throughput rates of the peripheral cells  10 ,  13 , and  15  under the wireless-configuration-related information, and then exchanges the total throughput rate under the wireless-configuration-related information with the throughput rates of the other adjustment participating cells. 
         [0042]      406 : All the adjustment participating cells analyze the exchanged system performance information. When the system performance information of all the adjustment participating cells and the peripheral cells of all the adjustment participating cells is greater than or equal to a threshold after a calculation, each adjustment participating cell adopts the currently corresponding wireless-configuration-related information to adjust the wireless configuration parameters of the adjustment participating cell, where each adjustment participating cell has the currently corresponding wireless-configuration-related information. Alternatively, the system performance information of all the adjustment participating cells and the peripheral cells of all the adjustment participating cells after calculation are compared with the total system performance of all the adjustment participating cells and the peripheral cells of all the adjustment participating cells under the different wireless-configuration-related information, to obtain wireless-configuration-related information corresponding to the maximum system performance, so that each adjustment participating cell adopts the wireless-configuration-related information corresponding to the maximum system performance to adjust the wireless configuration parameters of the adjustment participating cell. All the adjustment participating cells exchange the wireless-configuration-related information, then feed back the final wireless-configuration-related information to each other, and adopt the wireless configuration parameters corresponding to the final wireless-configuration-related information to adjust the wireless configuration parameters of the adjustment participating cells. 
         [0043]    For example, the adjustment participating cell  19  obtains the system performance information of the other adjustment participating cells and the peripheral cells of the other adjustment participating cells under all the wireless-configuration-related information, and adds (or adopts another operation) channel capacities of the adjustment participating cells and the corresponding peripheral cells of the adjustment participating cells under different wireless-configuration-related information. If the sum of the channel capacities is greater than a threshold (or a maximum sum is adopted), the adjustment participating cell  19  adjusts the wireless configuration parameters of the cell  19  according to the corresponding wireless-configuration-related information. The other adjustment participating cells may also adopt the foregoing method to obtain the wireless configuration parameters. Optionally, the adjustment participating cell  19  may transfer the wireless-configuration-related information of the other adjustment participating cells to the other adjustment participating cells, when the sum of the channel capacities is greater than the threshold. 
         [0044]    The system performance information of all the adjustment participating cells and the peripheral cells of all the adjustment participating cells after calculation are compared with the total system performance of all the adjustment participating cells and the peripheral cells of all the adjustment participating cells under the different wireless-configuration-related information. For example, the total system performance of the adjustment participating cell  19  and the peripheral cells of the adjustment participating cell  19  under certain wireless-configuration-related information is added to the total system performance of another adjustment participating cell  21  and the peripheral cells of the adjustment participating cell  21  under certain wireless-configuration-related information, and after the total system performance of all the adjustment participating cells and the peripheral cells of all the adjustment participating cells under certain wireless-configuration-related information is added up, assumed system performance is obtained. The assumed system performance under different wireless-configuration-related information is compared to obtain wireless-configuration-related information corresponding to maximum assumed system performance. All the adjustment participating cells adopt the wireless-configuration-related information corresponding to the maximum assumed system performance to adjust the wireless configuration parameters of the adjustment participating cells. Specifically, the adjustment participating cells may obtain corresponding wireless configuration parameters by using the numbers in the wireless-configuration-related information by matching, and adjust the wireless configuration parameters of the adjustment participating cells by using the wireless configuration parameters. 
         [0045]    The calculation of the system performance information includes a calculation of the throughput rate, a calculation of the user capacity, and also includes a calculation of the coverage area. For example, the coverage areas of the adjustment participating cells and the peripheral cells of the adjustment participating cells under certain wireless-configuration-related information of the adjustment participating cells are added to the coverage areas of the other adjustment participating cells and the peripheral cells of the other adjustment participating cells under certain wireless-configuration-related information of the adjustment participating cells, to obtain an assumed coverage area. The total system performance of all the adjustment participating cells and the peripheral cells of all the adjustment participating cells under different wireless-configuration-related information is compared, for example, the assumed coverage areas under different wireless-configuration-related information are compared to obtain the wireless-configuration-related information corresponding to the maximum assumed coverage area, and the adjustment participating cells adjust the wireless configuration parameters of the adjustment participating cells according to the wireless-configuration-related information. 
         [0046]    According to the foregoing embodiment, the calculation may be performed by the adjustment participating cells and the peripheral cells of the adjustment participating cells, and the system performance between the adjustment participating cells is balanced to decentralize a calculation work load, so that compared with a centralized processing mode, an adjustment speed is fast and a line overhead is low. 
         [0047]      FIG. 5  is a data flow diagram of another embodiment of a method for adjusting a cell wireless configuration parameter according to an embodiment of the present invention. This embodiment is substantially the same as the embodiment shown in  FIGS. 4A and 4B , so only the differences are described in the following and the same parts are not repeatedly described here. In this embodiment, only one adjustment participating cell exists. The method provided in this embodiment specifically includes the following content. 
         [0048]    Steps  501  to  504  are the same as steps  401  to  404 , and are not repeatedly described here. 
         [0049]      505 : The adjustment participating cell calculates (including a simulation calculation) and obtains the system performance information of the cell under the different wireless-configuration-related information of the cell based on the history measurement information at each geographical location in the cell and the peripheral cells of the adjustment participating cell. 
         [0050]      506 : When the system performance information of the adjustment participating cell and the peripheral cells of the adjustment participating cell under the different wireless-configuration-related information is greater than or equal to a threshold value after a calculation, the adjustment participating cell adopts the currently corresponding wireless-configuration-related information to adjust the wireless configuration parameters of the adjustment participating cell. Alternatively, the system performance information of the adjustment participating cell and the peripheral cells of the adjustment participating cell under the different wireless-configuration-related information is compared, to obtain wireless-configuration-related information corresponding to the maximum system performance information, and the wireless-configuration-related information is adopted to adjust the wireless configuration parameters of the adjustment participating cell. 
         [0051]    For example, the adjustment participating cell  19  obtains the system performance information of the peripheral cells of the adjustment participating cell  19  under all the wireless-configuration-related information, and adds (or adopts another operation) channel capacities of the adjustment participating cell and the peripheral cells of the adjustment participating cell under different wireless-configuration-related information. If the sum is greater than a threshold value (or a maximum sum is adopted), the adjustment participating cell  19  adjusts the wireless configuration parameters of the adjustment participating cell  19  according to the corresponding wireless-configuration-related information. The calculation of the system performance information may include a calculation of a throughput rate, a calculation of a user capacity, and may also include a calculation of a coverage area. For example, user capacities of the adjustment participating cell and the peripheral cells of the adjustment participating cell under certain wireless-configuration-related information of the adjustment participating cell are compared with user capacities of the adjustment participating cell and the peripheral cells of the adjustment participating cell under certain wireless-configuration-related information, to obtain the wireless-configuration-related information corresponding to the maximum user capacity, and the adjustment participating cell adjusts the wireless configuration parameters of the adjustment participating cell according to the wireless-configuration-related information. 
         [0052]    According to the foregoing embodiment, the calculation may be performed by the adjustment participating cell and the peripheral cells of the adjustment participating cell, and the system performance between the adjustment participating cells is balanced to decentralize a calculation work load, so that compared with a centralized processing mode, a adjustment speed is fast and a line overhead is low. 
         [0053]      FIG. 6  is a data flow diagram of another embodiment of a method for adjusting cell wireless configuration parameters according to an embodiment of the present invention. The method provided in the embodiments specifically includes the following content. 
         [0054]      601 : Peripheral cells send related information of the peripheral cells to corresponding adjustment participating cells. The related information of the peripheral cells includes geographical information and wireless-configuration-related information; and may also include history measurement information at each geographical location in the peripheral cells. The geographical information includes station address information (location), and may also include a channel model and/or cell shape and size. The history measurement information at each geographical location in the peripheral cells includes path loss, and may also include interference information and/or signal quality. 
         [0055]    For example, peripheral cells  10 ,  13 , and  15  respectively transfer geographical information of the peripheral cells  10 ,  13 , and  15  to an adjustment participating cell  19 . 
         [0056]      602 : The adjustment participating cells calculate (including a simulation calculation) and obtain the system performance information of the adjustment participating cells and the peripheral cells of the adjustment participating cells under the different wireless-configuration-related information of the adjustment participating cells, based on the geographical information of the adjustment participating cells, the geographical information of the peripheral cells of the adjustment participating cells, and the wireless-configuration-related information of the peripheral cells of the adjustment participating cells. Optionally, in order to calculate (including through a simulation calculation) the system performance information more accurately, the adjustment participating cells may also take into account the history measurement information at each geographical location in the adjustment participating cells and/or the history measurement information at each geographical location in the peripheral cells. 
         [0057]      603 : The adjustment participating cells exchange the system performance information of the adjustment participating cells and the system performance information of the peripheral cells of the adjustment participating cells with the system performance information of the other adjustment participating cells; or combine the system performance of multiple cells into total system performance information, and then exchange the total system performance information with the other adjustment participating cells. 
         [0058]      604 : Based on the system performance information, if the system performance of all the adjustment participating cells and the peripheral cells of all the adjustment participating cells is greater than or equal to a threshold after calculation, all the adjustment participating cells adopt the currently corresponding wireless-configuration-related information to adjust the wireless configuration parameters of the adjustment participating cells. 
         [0059]    According to the foregoing embodiment, the calculation may be performed by the adjustment participating cells, and the system performance between the adjustment participating cells is balanced to decentralize a calculation work load, so that compared with a centralized processing mode, an adjustment speed is fast and a line overhead is low. 
         [0060]      FIG. 7  is a data flow diagram of another embodiment of a method for adjusting cell wireless configuration parameters according to an embodiment of the present invention. In this embodiment, only one adjustment participating cell exists in the embodiment. The method provided in this embodiment specifically includes the following content. 
         [0061]      701 : Peripheral cells send related information of the peripheral cells to the corresponding adjustment participating cell. The related information of the peripheral cells includes geographical information and wireless-configuration-related information; and may also include history measurement information at each geographical location in the peripheral cells. The geographical information includes station address information (location), and may also include a channel model and/or cell shape and size. The history measurement information at each geographical location in the peripheral cells includes path loss, and may also include at least one of interference information and signal quality. 
         [0062]    For example, peripheral cells  10 ,  13 , and  15  respectively transfer geographical information of the peripheral cells  10 ,  13 , and  15  to an adjustment participating cell  19 . 
         [0063]      702 : The adjustment participating cell calculates (including a simulation calculation) and obtain the system performance information of the adjustment participating cell and the peripheral cells of the adjustment participating cell under the different wireless-configuration-related information of the adjustment participating cell, based on the geographical information of the adjustment participating cell, the geographical information of the peripheral cells of the adjustment participating cell, and the wireless-configuration-related information of the peripheral cells of the adjustment participating cell. Optionally, in order to calculate (including a simulation calculation) the system performance information more accurately, the adjustment participating cell may also take into account the history measurement information at each geographical location in the adjustment participating cell and/or the history measurement information at each geographical location in the peripheral cells during the calculation or simulation. 
         [0064]      703 : Based on the system performance information, if the system performance of the adjustment participating cell and the peripheral cells of the adjustment participating cell is greater than or equal to a threshold value after calculation, the adjustment participating cell adopts the currently corresponding wireless-configuration-related information to adjust the wireless configuration parameters of the adjustment participating cell. 
         [0065]    The method provided in the embodiment of the present invention may use an idle time period of cell operation resources, and a heavy calculation work load is avoided when demands on the coverage, capacity, or QoS are raised, thus greatly improving utilization of the cell operation resources and reducing a cost required by a centralized node. 
         [0066]      FIG. 8  is a schematic structural diagram of an eNB according to an embodiment of the present invention. Referring to  FIG. 8 , the eNB provided in this embodiment includes an obtaining unit  801  and an adjusting unit  802 . The obtaining unit  801  is configured to obtain system performance information of an adjustment participating cell and a peripheral cell of the adjustment participating cell under different wireless-configuration-related information. The adjusting unit  802  is configured to adjust a wireless configuration parameter of the adjustment participating cell according to the system performance information of the adjustment participating cell and the peripheral cell of the adjustment participating cell. 
         [0067]    The eNB provided in this embodiment may calculate the wireless-configuration-related information respectively, thus avoiding disadvantages that resource consumption is high and a speed is slow during centralized processing. 
         [0068]      FIG. 9  is another schematic structural diagram of an eNB according to an embodiment of the present invention. Referring to  FIG. 9 , the eNB provided in this embodiment includes an obtaining unit  901  and an adjusting unit  902 . The obtaining unit  901  is configured to obtain system performance information of an adjustment participating cell and a peripheral cell of the adjustment participating cell under different wireless-configuration-related information. Optionally, the obtaining unit is further configured to obtain system performance information of the peripheral cell under the different wireless-configuration-related information of the adjustment participating cell from the eNB corresponding to the peripheral cell. The adjusting unit  902  is configured to adjust a wireless configuration parameter of the adjustment participating cell according to the system performance information of the adjustment participating cell and the peripheral cell of the adjustment participating cell. 
         [0069]    Optionally, the eNB also includes a calculating unit  903 , which is connected between the obtaining unit  901  and the adjusting unit  902 , and configured to calculate the system performance information of the peripheral cell. 
         [0070]    Optionally, the eNB also includes an exchanging unit  904 , which is connected to the adjusting unit  902 , and configured to exchange the system performance information of the adjustment participating cells and the peripheral cells of the adjustment participating cells between the adjustment participating cells. 
         [0071]    Optionally, the adjusting unit  902  of the eNB is further configured to perform an operation on the system performance information of the adjustment participating cells and the system performance information of the peripheral cells of the adjustment participating cells, and when total system performance of all the adjustment participating cells and the peripheral cells of all the adjustment participating cells exceeds a set value, adjust the wireless configuration parameters of the adjustment participating cells according to the current corresponding wireless-configuration-related information; or obtain a wireless configuration parameter corresponding to maximum system performance by comparing the total system performance of all the adjustment participating cells and the peripheral cells of all the adjustment participating cells under the different wireless-configuration-related information, and adjust the wireless configuration parameter of the adjustment participating cell according to the wireless-configuration-related information corresponding to the maximum system performance. 
         [0072]    In a specific implementation process, an eNB of the adjustment participating cell obtains geographical information of the peripheral cells and history measurement information at each geographical location in the peripheral cells (including path loss, and also including at least one of interference information and signal quality) through the obtaining unit  901 . For example, peripheral cells  10 ,  13 , and  15  respectively send the geographical information of the peripheral cells and the related history measurement information at each geographical location in the peripheral cells to a corresponding adjustment participating cell  19 . Alternatively, the eNB of the adjustment participating cell obtains the system performance information of the peripheral cells under the different wireless-configuration-related information of the adjustment participating cell through the obtaining unit  901 . For example, the adjustment participating cell  19  obtains multiple pieces of system performance information of the peripheral cells  10 ,  13 , and  15 . 
         [0073]    Optionally, the eNB of the adjustment participating cell may also calculate the system performance of the adjustment participating cell and the peripheral cell of the adjustment participating cell under the different wireless-configuration-related information through the calculating unit  903 . 
         [0074]    An embodiment of the present invention also provides a communication system, where the communication system includes the eNB provided in the foregoing embodiment. 
         [0075]    Through the technical solutions provided in the embodiments of the present invention, the wireless coverage, service capacity, and QoS assurance are provided for a geographical area, and a distribution mode is adopted for implementation instead of using a centralized node. Therefore, the wireless configuration parameter of the cell can be adjusted in real time with a small time delay. The method provided in the embodiment of the present invention may use an idle time period of the cell operation resources, and a heavy calculation work load is avoided when demands on the coverage, capacity, or QoS are raised, thus greatly improving the utilization of the cell operation resources and reducing the cost required by the centralized node. Besides, the cell is used to process and calculate the history measurement information to obtain the system performance information, and the system performance information is exchanged between networks, thus reducing a backhaul overhead of the network. 
         [0076]    Through the foregoing description of the implementations, persons skilled in the art may clearly understand that the present invention may be accomplished through hardware, or through software plus a necessary universal hardware platform. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product. The software product may be stored in a nonvolatile storage medium, for example a CD-ROM, a USB flash drive, or a removable hard disk, and include several instructions for instructing a computer device (may be a personal computer, a server, or a network device) to perform the method according to the embodiments of the present invention. 
         [0077]    The technical solutions and beneficial effects of the present invention have been described in further detail through the foregoing specific embodiments. It should be understood that the foregoing descriptions are merely specific embodiments of the present invention, but not intended to limit the protection scope of the present invention.