CN100442684C - Method for Improving the Synchronization Performance of the System Whole Network - Google Patents
Method for Improving the Synchronization Performance of the System Whole Network Download PDFInfo
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Abstract
本发明涉及一种提高系统全网同步性能的方法，该方法的核心是：首先根据基站控制器获取的基站控制器和所有基站的时间差(RFN-BFN)，对本小区与各邻近小区的参考时间差进行校准计算；然后基于校准后的本小区的各邻近小区的参考时间差控制终端设备根据本小区和邻小区的时间差来调整接收邻小区的时间，实现提高系统的全网同步性能。通过本发明能够提高本小区与各邻近小区的参考时间差的准确程度，进而提高系统的全网同步性能，通过本发明能够有效地降低移动终端切换时的小区搜索时间，降低移动终端的功耗，解决了现有技术中移动终端切换时对小区的搜索时间长，功耗高的问题。
The invention relates to a method for improving the synchronization performance of the whole network of the system. The core of the method is: firstly, according to the time difference (RFN-BFN) between the base station controller and all base stations obtained by the base station controller, the reference time difference between the local cell and each adjacent cell Carry out calibration calculations; then based on the calibrated reference time difference of each adjacent cell of the own cell, control the terminal device to adjust the time of receiving the adjacent cell according to the time difference between the own cell and the adjacent cell, so as to improve the synchronization performance of the whole network of the system. Through the present invention, the accuracy of the reference time difference between the local cell and each adjacent cell can be improved, thereby improving the network-wide synchronization performance of the system, and the present invention can effectively reduce the cell search time when the mobile terminal switches, and reduce the power consumption of the mobile terminal. The problem of long search time and high power consumption for the cell when the mobile terminal switches over in the prior art is solved.
Description
技术领域technical field
本发明涉及通讯领域，尤其涉及一种提高系统全网同步性能的方法。The invention relates to the communication field, in particular to a method for improving the synchronization performance of the whole network of the system.
背景技术Background technique
在通信系统中，特别是在宽带码分多址(WCDMA)系统中，基站(NodeB)包括一个或多个小区，通过lub接口连接到基站控制器(RadioNetwork Control，RNC)。RNC根据各小区间的时间差参数决定移动终端(UE)对邻近小区搜索时间的切换。In a communication system, especially in a wideband code division multiple access (WCDMA) system, a base station (NodeB) includes one or more cells, and is connected to a base station controller (RadioNetwork Control, RNC) through a lub interface. The RNC decides the switching of the search time of the adjacent cell by the mobile terminal (UE) according to the time difference parameters between the cells.
如果各小区间的时间差参数不够准确，则UE搜索小区的时间将会增长，进而会导致终端设备的功耗增大，因而迫切需要提高系统的全网同步性能，这样就能够得到较为准确的各小区间的时间差参数，进而能够降低移动终端切换时对小区的搜索时间，降低移动终端的功耗。If the time difference parameters between cells are not accurate enough, the time for the UE to search for cells will increase, which in turn will increase the power consumption of the terminal equipment. Therefore, it is urgent to improve the synchronization performance of the whole network of the system, so that more accurate information about each cell can be obtained. The time difference parameter between the cells can further reduce the search time for the cell when the mobile terminal switches, and reduce the power consumption of the mobile terminal.
目前可以实现系统全网同步的方法：在宽带码分多址(WCDMA)系统采用全球定位系统(GPS)时钟源实现系统的全网同步。也就是说，要求系统在GPS时间内实现全网同步化。At present, the method for realizing the whole network synchronization of the system is: in the wideband code division multiple access (WCDMA) system, the global positioning system (GPS) clock source is used to realize the whole network synchronization of the system. That is to say, the system is required to realize the synchronization of the whole network within the GPS time.
采用上述方法存在如下不足：There are following deficiencies in adopting the above method:
1、需要在采用的区域建立GPS卫星群，故成本较高。1. It is necessary to establish a GPS satellite group in the adopted area, so the cost is relatively high.
2、在GPS故障情况下，或采用的区域可能被高大建筑物挡住GPS卫星群的等情况下无法实现系统的全网同步。2. In the case of GPS failure, or the area used may be blocked by tall buildings and GPS satellite groups, the synchronization of the whole network of the system cannot be realized.
基于上述原因，需要一些其他替代方案实现系统的全网同步。于是出现了与本发明有关的现有技术，其技术方案为：NodeB采用独立时钟源，RNC在系统消息(SIB11)中广播相邻小区和服务小区之间的参考时间差，移动终端从广播中获取各个小区之间的参考时间差，根据两个小区间的T_cell(小区导频信道发射时刻与基站BFN间的定时差)参数计算并得到各相邻小区的时间差，进而通过所述得到的各相邻小区的时间差实现系统的全网同步。Based on the above reasons, some other alternatives are needed to achieve network-wide synchronization of the system. Then there is an existing technology related to the present invention, and its technical solution is: NodeB adopts an independent clock source, RNC broadcasts the reference time difference between the adjacent cell and the serving cell in the system message (SIB11), and the mobile terminal obtains from the broadcast The reference time difference between each cell is calculated according to the T_cell (the timing difference between the pilot channel transmission moment of the cell and the base station BFN) parameter between the two cells and the time difference of each adjacent cell is obtained, and then each adjacent cell obtained by the above The time difference of the cell realizes the synchronization of the whole network of the system.
采用现有技术的技术方案，虽然相对于采用全球定位系统(GPS)时钟源实现系统的全网同步的方案成本要低，但是，要想通过此方案很好地实现系统的全网同步，还需要基于各个NodeB的时间起点(NodeB FrameNumber；BFN)一致的前提条件，然而，事实上这个前提条件不能得到满足，因而RNC广播的参考时间差参数不够准确，系统的全网同步也就不能很好地实现，进而导致移动终端切换时对小区的搜索时间较长，功耗高等问题的出现。Adopting the technical scheme of the prior art, although the scheme cost is lower than adopting the Global Positioning System (GPS) clock source to realize the whole network synchronization of the system, but, in order to realize the whole network synchronization of the system well through this scheme, still need It needs to be based on the precondition that the time starting point (NodeB FrameNumber; BFN) of each NodeB is consistent. However, in fact, this precondition cannot be satisfied, so the reference time difference parameter broadcast by RNC is not accurate enough, and the system's entire network synchronization cannot be well implementation, which in turn leads to the occurrence of problems such as long search time for the cell and high power consumption when the mobile terminal switches.
发明内容Contents of the invention
本发明的目的是提供一种提高系统全网同步性能的方法，通过该方法，能够解决现有技术中不能很好地实现系统的全网同步的问题，进而解决现有技术中移动终端切换时对小区的搜索时间长，功耗高的问题。The purpose of the present invention is to provide a method for improving the synchronization performance of the whole network of the system. Through this method, the problem that the synchronization of the whole network of the system cannot be well realized in the prior art can be solved, and then the problem of the mobile terminal handover in the prior art can be solved. The cell search time is long and the power consumption is high.
本发明的目的是通过以下技术方案实现的：The purpose of the present invention is achieved through the following technical solutions:
本发明提供的一种提高系统全网同步性能的方法，包括：A method for improving the synchronization performance of the whole network of the system provided by the present invention includes:
A、通过基站控制器获取的基站控制器和基站间的时间差参数RFN-BFN，以及各小区的T_cell参数，计算得到本小区与各邻近小区的参考时间差；A. The time difference parameter RFN-BFN between the base station controller and the base station obtained by the base station controller, and the T_cell parameter of each cell, calculate the reference time difference between this cell and each adjacent cell;
B、基于所得到的本小区与各邻近小区的参考时间差进行系统的全网同步处理。B. Perform network-wide synchronization processing of the system based on the obtained reference time difference between the local cell and each adjacent cell.
其中，所述步骤A具体包括：Wherein, the step A specifically includes:
基站控制器通过基站控制器与基站间的节点同步功能获取基站控制器与基站间的时间差参数RFN-BFN；以及，The base station controller obtains the time difference parameter RFN-BFN between the base station controller and the base station through the node synchronization function between the base station controller and the base station; and,
基站控制器通过配置参数获取各小区的T_cell参数。The base station controller obtains the T_cell parameter of each cell through configuration parameters.
其中，所述步骤A具体包括：Wherein, the step A specifically includes:
根据获取的所述时间差参数RFN-BFN和所述T_cell参数，通过公式According to the obtained time difference parameter RFN-BFN and the T_cell parameter, through the formula
Tdiff＝TRFN-BFN2-TRFN-BFN1+T_cell2-T_cell1T diff =T RFN-BFN2 -T RFN-BFN1 +T_cell2-T_cell1
进行计算，得到本小区与各邻近小区间的参考时间差；Perform calculations to obtain the reference time difference between this cell and each adjacent cell;
其中，公式中的参数表示如下：Among them, the parameters in the formula are expressed as follows:
Tdiff：本小区1与邻近小区2的参考时间差；T diff : the reference time difference between the local cell 1 and the adjacent cell 2;
TRFN-BFN2：RNC的RFN与邻近小区2所在NodeB2的BFN的时间差；T RFN-BFN2 : the time difference between the RFN of the RNC and the BFN of the NodeB2 where the adjacent cell 2 is located;
TRFN-BFN1：RNC的RFN与本小区1所在NodeB1的BFN的时间差；T RFN-BFN1 : the time difference between the RFN of the RNC and the BFN of NodeB1 where cell 1 is located;
T_cell2：邻近小区2的T_cell参数值；T_cell2: T_cell parameter value of adjacent cell 2;
T_cell1：本小区1的T_Gell参数值。T_cell1: T_Gell parameter value of cell 1.
其中，所述步骤A具体包括：Wherein, the step A specifically includes:
根据获取的所述时间差参数RFN-BFN和所述T_cell参数，通过公式According to the obtained time difference parameter RFN-BFN and the T_cell parameter, through the formula
Tdiff＝TRFN-BFN2-TRFN-BFN1+T_cell2-T_cell1T diff =T RFN-BFN2 -T RFN-BFN1 +T_cell2-T_cell1
周期性地进行计算，得到校准后的本小区与各邻近小区间的参考时间差；Calculate periodically to obtain the reference time difference between the calibrated local cell and each adjacent cell;
其中，公式中的参数表示如下：Among them, the parameters in the formula are expressed as follows:
Tdiff：本小区1与邻近小区2的参考时间差；T diff : the reference time difference between the local cell 1 and the adjacent cell 2;
TRFN-BFN2：RNC的RFN与邻近小区2所在NodeB2的BFN的时间差；T RFN-BFN2 : the time difference between the RFN of the RNC and the BFN of the NodeB2 where the adjacent cell 2 is located;
TRFN-BFN1：RNC的RFN与本小区1所在NodeB1的BFN的时间差；T RFN-BFN1 : the time difference between the RFN of the RNC and the BFN of NodeB1 where cell 1 is located;
T_cell2：邻近小区2的T_cell参数值；T_cell2: T_cell parameter value of adjacent cell 2;
T_cell1：本小区1的T_cell参数值。T_cell1: T_cell parameter value of cell 1.
其中，所述步骤B具体包括：Wherein, the step B specifically includes:
B1、当基站控制器根据校准计算的所述参考时间差确认系统广播消息中的小区时间参数没有网点同步结果时，则通过公式B1. When the base station controller confirms that the cell time parameter in the system broadcast message has no network point synchronization result according to the reference time difference calculated by calibration, then the formula
Tdiff＝T_cell2-T_cell1T diff =T_cell2-T_cell1
进行计算，得到本小区与各邻近小区间的参考时间差；其中，公式中的参数表示如下：Perform calculations to obtain the reference time difference between this cell and each adjacent cell; wherein, the parameters in the formula are expressed as follows:
Tdiff：本小区1与邻近小区2的参考时间差；T diff : the reference time difference between the local cell 1 and the adjacent cell 2;
T_cell2：邻近小区2的T_cell参数值；T_cell2: T_cell parameter value of adjacent cell 2;
T_cell1：本小区1的T_cell参数值；T_cell1: T_cell parameter value of cell 1;
B2、基于得到的所述参考时间差提高系统的全网同步性能。B2. Improve network-wide synchronization performance of the system based on the obtained reference time difference.
其中，所述步骤B具体包括：Wherein, the step B specifically includes:
B3、基站控制器判断此次计算的所述参考时间差的值与上次计算的所述参考时间差的值是否发生变化，若未发生变化，则基于此次计算的所述参考时间差提高系统的全网同步性能；否则，执行步骤B4；B3. The base station controller judges whether the value of the reference time difference calculated this time and the value of the reference time difference calculated last time have changed, and if there is no change, then based on the reference time difference calculated this time to improve the overall performance of the system network synchronization performance; otherwise, perform step B4;
B4、发送更新系统消息的请求消息通知系统更新系统广播消息；B4. Send a request message to update the system message to notify the system to update the system broadcast message;
B5、系统根据所述请求消息对系统广播消息进行更新；B5. The system updates the system broadcast message according to the request message;
B6、基站控制器根据更新后的系统广播消息中的时间参数计算本小区与各邻近小区间的参考时间差，并基于得到的所述参考时间差提高系统的全网同步性能。B6. The base station controller calculates the reference time difference between the own cell and each adjacent cell according to the time parameter in the updated system broadcast message, and improves the synchronization performance of the whole network of the system based on the obtained reference time difference.
其中，所述步骤B还包括：Wherein, the step B also includes:
B7、当基站控制器确认系统广播消息中的小区时间参数长时间未更新时，则通过公式B7. When the base station controller confirms that the cell time parameter in the system broadcast message has not been updated for a long time, the formula
Tdiff＝T_cell2-T_cell1T diff =T_cell2-T_cell1
进行计算，得到该小区与各邻近小区间的参考时间差；其中，公式中的参数表示如下：Perform calculations to obtain the reference time difference between the cell and each adjacent cell; wherein, the parameters in the formula are expressed as follows:
Tdiff：本小区1与邻近小区2的参考时间差；T diff : the reference time difference between the local cell 1 and the adjacent cell 2;
T_cell2：邻近小区2的T_cell参数值；T_cell2: T_cell parameter value of adjacent cell 2;
T_cell1：本小区1的T_cell参数值；T_cell1: T_cell parameter value of cell 1;
B8、基于得到的所述参考时间差提高系统的全网同步性能。B8. Improve network-wide synchronization performance of the system based on the obtained reference time difference.
由上述本发明提供的技术方案可以看出，本发明所述的方法根据RNC获取的RNC和所有NodeB的时间差(RFN(RNC Frame Number)-BFN)，校准计算本小区与各邻近小区的参考时间差，从而提高该参数的准确程度，进而提高系统全网同步的性能，有效地降低了移动终端切换时的小区搜索时间，降低了移动终端的功耗，解决了现有技术中移动终端切换时对小区的搜索时间长，功耗高的问题。As can be seen from the technical solution provided by the present invention above, the method according to the present invention calculates the reference time difference between the own cell and each neighboring cell according to the time difference (RFN (RNC Frame Number)-BFN) of the RNC and all NodeBs obtained by the RNC. , so as to improve the accuracy of this parameter, and then improve the performance of the whole network synchronization of the system, effectively reduce the cell search time when the mobile terminal is handed over, reduce the power consumption of the mobile terminal, and solve the problem of the cell in the prior art when the mobile terminal is handed over The search time is long and the power consumption is high.
附图说明Description of drawings
图1为本发明实施例的流程图。Fig. 1 is a flowchart of an embodiment of the present invention.
具体实施方式Detailed ways
本发明提供了一种提高系统全网同步性能的方法，其核心是：首先通过RNC获取RNC和所有NodeB的时间差(RFN-BFN)，校准计算本小区的各邻近小区的参考时间差，然后基于校准后的本小区的各邻近小区的参考时间差提高系统全网同步的性能。The present invention provides a method for improving the synchronization performance of the whole network of the system, the core of which is: first obtain the time difference (RFN-BFN) between the RNC and all NodeBs through the RNC, calibrate and calculate the reference time difference of each adjacent cell of this cell, and then based on the calibration The subsequent reference time difference of each neighboring cell of this cell improves the performance of system-wide network synchronization.
本发明提供的第一实施例的具体实施过程包括：The specific implementation process of the first embodiment provided by the present invention includes:
步骤一，基站控制器获取RNC和所有NodeB间的时间差参数(RFN-BFN)以及各小区的T_cell参数。Step 1, the base station controller obtains the time difference parameter (RFN-BFN) between the RNC and all NodeBs and the T_cell parameter of each cell.
通常，基站控制器通过RNC与NodeB间的节点同步过程中的用户面帧协议(FP)的节点(Node)同步功能获取到基站控制器与基站间的时间差参数(RFN-BFN)。Usually, the base station controller obtains the time difference parameter (RFN-BFN) between the base station controller and the base station through the node (Node) synchronization function of the user plane frame protocol (FP) during the node synchronization process between the RNC and the NodeB.
另外，因为通过RNC的操作维护系统为各个网点中的每个小区都配置了T_cell参数，这些参数通过系统广播消息进行广播，因而RNC能够通过系统广播消息中的配置参数获取到各小区的T_cell参数。In addition, because the RNC operation and maintenance system configures T_cell parameters for each cell in each network point, these parameters are broadcast through the system broadcast message, so the RNC can obtain the T_cell parameters of each cell through the configuration parameters in the system broadcast message .
当基站控制器获取到上述参数后，接着执行下述步骤：After the base station controller obtains the above parameters, the following steps are performed:
步骤二，根据获取到的所述时间差参数(RFN-BFN)和所述T_cell参数，通过下述公式1：Step 2, according to the obtained time difference parameter (RFN-BFN) and the T_cell parameter, through the following formula 1:
Tdiff＝TRFN-BFN2-TRFN-BFN1+T_cell2-T_cell1T diff =T RFN-BFN2 -T RFN-BFN1 +T_cell2-T_cell1
公式1Formula 1
进行计算，得到本小区与各邻近小区的参考时间差。Perform calculation to obtain the reference time difference between this cell and each adjacent cell.
其中，公式中的参数表示如下：Among them, the parameters in the formula are expressed as follows:
Tdiff：本小区1与邻近小区2的时间差；T diff : the time difference between the local cell 1 and the adjacent cell 2;
TRFN-BFN2：RNC的RFN与邻近小区2所在NodeB2的BFN的时间差；T RFN-BFN2 : the time difference between the RFN of the RNC and the BFN of the NodeB2 where the adjacent cell 2 is located;
TRFN-BFN1：RNC的RFN与本小区1所在NodeB1的BFN的时间差；T RFN-BFN1 : the time difference between the RFN of the RNC and the BFN of NodeB1 where cell 1 is located;
T_cell2：邻近小区2的T_cell参数值；T_cell2: T_cell parameter value of adjacent cell 2;
T_cell1：本小区1的T_cell参数值。T_cell1: T_cell parameter value of cell 1.
因为小区的T_cell参数值是基于该小区的NodeB的BFN的，如果两个小区，如小区A和小区B是基于两个不同的NodeB，而且它们的BFN不对齐，根据T_cell相减得到的时间差并不是非常准确的时间差，缺少了两个NodeB的BFN差值。本发明将两个NodeB的BFN之间的差值计算出来并增加到两个小区的时间差参数中，因而将会得到较为精确的本小区与各邻近小区的参考时间差参数。然后基于所述较为精确的本小区与各邻近小区的参考时间差参数，就能够提高系统的全网同步性能。即紧接着执行下述步骤。Because the T_cell parameter value of a cell is based on the BFN of the NodeB of the cell, if two cells, such as cell A and cell B, are based on two different NodeBs and their BFNs are not aligned, the time difference obtained by subtracting T_cell is not The time difference is not very accurate, and the BFN difference between the two NodeBs is missing. The present invention calculates the difference between the BFNs of two NodeBs and adds it to the time difference parameters of the two cells, thus obtaining more accurate reference time difference parameters between the own cell and each neighboring cell. Then, based on the relatively accurate reference time difference parameters between the local cell and each neighboring cell, the synchronization performance of the whole network of the system can be improved. That is, the following steps are followed immediately.
步骤三，基于所述本小区与各邻近小区的参考时间差提高系统的全网同步性能。Step 3, based on the reference time difference between the local cell and each neighboring cell, the synchronization performance of the whole network of the system is improved.
本发明提供的第二实施例，如图1所示，具体实施过程包括：The second embodiment provided by the present invention, as shown in Figure 1, the specific implementation process includes:
步骤S101，基站控制器获取RNC和所有NodeB间的时间差参数(RFN-BFN)以及各小区的T_cell参数。Step S101, the base station controller obtains the time difference parameter (RFN-BFN) between the RNC and all NodeBs and the T_cell parameter of each cell.
在这一步骤中，具体获取RNC和所有NodeB间的时间差参数(RFN-BFN)以及各小区的T_cell参数的方法同第一实施例中的步骤一雷同，这里不再一一详细描述。In this step, the specific method of obtaining the time difference parameter (RFN-BFN) between the RNC and all NodeBs and the T_cell parameter of each cell is the same as Step 1 in the first embodiment, and will not be described in detail here.
当基站控制器获取到上述参数后，接着执行下述步骤。After the base station controller obtains the above parameters, the following steps are performed.
步骤S102，根据获取的所述时间差参数(RFN-BFN)和所述T_cell参数，通过下述公式1：Step S102, according to the obtained time difference parameter (RFN-BFN) and the T_cell parameter, through the following formula 1:
Tdiff＝TRFN-BFN2-TRFN-BFN1+T_cell2-T_cell1T diff =T RFN-BFN2 -T RFN-BFN1 +T_cell2-T_cell1
公式1Formula 1
周期性地进行计算，得到本小区与各邻近小区的参考时间差。The calculation is performed periodically to obtain the reference time difference between the own cell and each neighboring cell.
其中，公式中的参数表示如下：Among them, the parameters in the formula are expressed as follows:
Tdiff：本小区1与邻近小区2的时间差；T diff : the time difference between the local cell 1 and the adjacent cell 2;
TRFN-BFN2：RNC的RFN与邻近小区2所在NodeB2的BFN的时间差；T RFN-BFN2 : the time difference between the RFN of the RNC and the BFN of the NodeB2 where the adjacent cell 2 is located;
TRFN-BFN1：RNC的RFN与本小区1所在NodeB1的BFN的时间差；T RFN-BFN1 : the time difference between the RFN of the RNC and the BFN of NodeB1 where cell 1 is located;
T_cell2：邻近小区2的T_cell值；T_cell2: T_cell value of adjacent cell 2;
T_cell1：本小区1的T_cell值。T_cell1: T_cell value of cell 1.
步骤S103，基站控制器判断此次计算的所述参考时间差的值与上次计算的所述参考时间差的值是否发生变化，若未发生变化，则执行步骤S104，即根据此次计算的所述参考时间差提高系统的全网同步性能；否则，执行步骤S105。Step S103, the base station controller judges whether the value of the reference time difference calculated this time and the value of the reference time difference calculated last time have changed, and if there is no change, then execute step S104, that is, according to the value of the reference time difference calculated this time Improve the network-wide synchronization performance of the system with reference to the time difference; otherwise, execute step S105.
步骤S105，发送更新系统消息的请求消息通知系统更新系统广播消息。Step S105, sending a request message to update the system message to notify the system to update the system broadcast message.
步骤S106，系统根据所述请求消息对系统广播消息进行更新。Step S106, the system updates the system broadcast message according to the request message.
步骤S107，基站控制器根据更新后的系统广播消息中的时间参数计算本小区与各邻近小区的参考时间差，并基于得到的所述参考时间差提高系统的全网同步性能。Step S107, the base station controller calculates the reference time difference between the own cell and each neighboring cell according to the time parameter in the updated system broadcast message, and improves the synchronization performance of the whole network of the system based on the obtained reference time difference.
步骤S108，当基站控制器确认系统广播消息中的小区时间参数长时间未更新时，则通过公式2：Step S108, when the base station controller confirms that the cell time parameter in the system broadcast message has not been updated for a long time, formula 2 is used:
Tdiff＝T_cell2-T_cell1T diff =T_cell2-T_cell1
公式2Formula 2
进行计算，得到本小区与各邻近小区的参考时间差。Perform calculation to obtain the reference time difference between this cell and each adjacent cell.
其中，公式中的参数表示如下：Among them, the parameters in the formula are expressed as follows:
Tdiff：本小区1与邻近小区2的时间差；T diff : the time difference between the local cell 1 and the adjacent cell 2;
T_cell2：小区2的T_cell值；T_cell2: T_cell value of cell 2;
T_cell1：小区1的T_cell值。T_cell1: T_cell value of cell 1.
步骤S109，基于得到的所述参考时间差提高系统的全网同步性能。Step S109 , based on the obtained reference time difference, improve the network-wide synchronization performance of the system.
基于所述得到的参考时间差控制终端设备调整接收邻小区的时间，达到提高系统的全网同步性能的目的。Based on the obtained reference time difference, the terminal device is controlled to adjust the time for receiving neighboring cells, so as to achieve the purpose of improving the synchronization performance of the whole network of the system.
本发明提供的第三实施例的具体实施过程包括：The specific implementation process of the third embodiment provided by the present invention includes:
步骤一，基站控制器获取RNC和所有NodeB间的时间差参数(RFN-BFN)以及各小区的T_cell参数。Step 1, the base station controller obtains the time difference parameter (RFN-BFN) between the RNC and all NodeBs and the T_cell parameter of each cell.
在这一步骤中，具体获取RNC和所有NodeB间的时间差参数(RFN-BFN)以及各小区的T_cell参数的方法同第一实施例中的步骤一雷同，这里不再一一详细描述。In this step, the specific method of obtaining the time difference parameter (RFN-BFN) between the RNC and all NodeBs and the T_cell parameter of each cell is the same as Step 1 in the first embodiment, and will not be described in detail here.
当基站控制器获取到上述参数后，接着执行下述步骤。After the base station controller obtains the above parameters, the following steps are performed.
步骤二，根据获取的所述时间差参数(RFN-BFN)和所述T_cell参数，通过下述公式1：Step 2, according to the obtained time difference parameter (RFN-BFN) and the T_cell parameter, through the following formula 1:
Tdiff＝TRFN-BFN2-TRFN-BFN1+T_cell2-T_cell1T diff =T RFN-BFN2 -T RFN-BFN1 +T_cell2-T_cell1
公式1Formula 1
进行计算，得到本小区与各邻近小区间的参考时间差。Perform calculation to obtain the reference time difference between the own cell and each adjacent cell.
其中，公式中的参数表示如下：Among them, the parameters in the formula are expressed as follows:
Tdiff：本小区1与邻近小区2的时间差；T diff : the time difference between the local cell 1 and the adjacent cell 2;
TRFN-BFN2：RNC的RFN与邻近小区2所在NodeB2的BFN的时间差；T RFN-BFN2 : the time difference between the RFN of the RNC and the BFN of the NodeB2 where the adjacent cell 2 is located;
TRFN-BFN1：RNC的RFN与本小区1所在NodeB1的BFN的时间差；T RFN-BFN1 : the time difference between the RFN of the RNC and the BFN of NodeB1 where cell 1 is located;
T_cell2：邻近小区2的T_cell值；T_cell2: T_cell value of adjacent cell 2;
T_cell1：本小区1的T_cell值。T_cell1: T_cell value of cell 1.
步骤三，当基站控制器根据校准计算的所述参考时间差确认系统广播消息中的小区时间参数没有网点同步结果时，则通过公式2：Step 3, when the base station controller confirms that the cell time parameter in the system broadcast message has no network point synchronization result according to the reference time difference calculated by calibration, formula 2 is used:
Tdiff＝T_cell2-T_cell1T diff =T_cell2-T_cell1
公式2Formula 2
进行计算，得到本小区与各邻近小区间的参考时间差。Perform calculation to obtain the reference time difference between the own cell and each adjacent cell.
其中，公式中的参数表示如下：Among them, the parameters in the formula are expressed as follows:
Tdiff：本小区1与邻近小区2的时间差；T diff : the time difference between the local cell 1 and the adjacent cell 2;
T_cell2：邻近小区2的T_cell值；T_cell2: T_cell value of adjacent cell 2;
T_cell1：本小区1的T_cell值。T_cell1: T_cell value of cell 1.
步骤四，基于得到的所述参考时间差提高系统的全网同步性能。Step 4, improve the synchronization performance of the whole network of the system based on the obtained reference time difference.
由上述实施方案可以看出，本发明通过基站控制器(RNC)根据获取的所述时间差参数(RFN-BFN)和所述T_cell参数计算并得到的本小区与各邻近小区间的参考时间差，然后基于所述得到的参考时间差控制终端设备根据本小区和邻小区的时间差来调整接收邻小区的时间，从而提高系统的全网同步性能，进而降低移动终端搜索到邻小区的时间，降低移动终端的功耗。As can be seen from the foregoing embodiments, the present invention calculates and obtains the reference time difference between the own cell and each neighboring cell through the base station controller (RNC) according to the obtained time difference parameter (RFN-BFN) and the T_cell parameter, and then Based on the obtained reference time difference, the terminal device is controlled to adjust the time for receiving the neighboring cell according to the time difference between the local cell and the neighboring cell, thereby improving the synchronization performance of the whole network of the system, further reducing the time for the mobile terminal to search for the neighboring cell, and reducing the time for the mobile terminal power consumption.
以上所述，仅为本发明较佳的具体实施方式，但本发明的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本发明揭露的技术范围内，可轻易想到的变化或替换，都应涵盖在本发明的保护范围之内。因此，本发明的保护范围应该以权利要求的保护范围为准。The above is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed in the present invention can easily think of changes or Replacement should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be determined by the protection scope of the claims.
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