基站

But they assume the abscissa, the ordinate of the MS and the distance between the MS and the severing BS are three independent variables neglecting their correlation.

其主要缺点是把移动台的横坐标、纵坐标与移动台到服务基站之间的距离作为3个相互独立的变量，忽略了3者之间的相关性。

Under large-scale environment and so on building underlying bed, underground market, underground parking garage, the mobile communication signal is weak, the handset was unable normally to use, has formed the mobile communication blind spot and the shadow region; In among floor periphery, because comes from different base depot signal overlapping, has the pingpong effect, the handset frequent cut, even falls the speech, seriously has affected the handset normal use; In building high level, as a result of the base depot antenna high limit, is unable normally to cover, also is the mobile communication blind spot.

在大型建筑物的低层、地下商场、地下停车场等环境下，移动通信信号弱，手机无法正常使用，形成了移动通信的盲区和阴影区；在中间楼层，由于来自周围不同基站信号的重叠，产生乒乓效应，手机频繁切换，甚至掉话，严重影响了手机的正常使用；在建筑物的高层，由于受基站天线的高度限制，无法正常覆盖，也是移动通信的盲区。

Due to the limited coverage of each cell station, handovers becomes a necessary activity for mobile users. But handover activity also brings about new technical challenges to the network design.

由于用户处在移动中而基站的覆盖范围有限，因此用户就需要在基站间切换，由于切换而造成的用户掉话也是移动通信带来的新问题。

Data packets are received at a time interval p from a first base station of the wireless network system to which the mobile station is currently connected.

该方法首先依据时间间隔p，从无线网络系统中的第一基站接收数据封包，其中该移动终端目前与第一基站建立连接。

When the launched SNR is more than the threshold, the cognitive network is an inter-user interference limited system, the base station selects the stochastic wave forming mode of a single beam and selects the user which has the maximum received SNR from the sub-scribers as a current communication object; when the launched SNR is less than the threshold, the sub-scriber network is a noise interference limited system. The base station selects the opportunistic SDMA of multi-beams and then selects a plurality of scribers with the maximum received SNR from the sub-scribers as the communication objects, thus realizing the maximization of system capacity.

当发射信噪比大于门限值时，认知网络为用户间干扰受限系统，基站选择单波束的随机波束成型模式，在从用户中选择接收信噪比最大的用户作为本次的通信的对象；当发射信噪比小于门限时，从用户网络为噪声干扰受限系统，基站选择多波束的机会式空分多址模式，在从用户中选择信噪比最大的几个用户作为通信对象，从而实现了系统容量最大化。

The invention can achieve the automatic recognition of the RET equipment type by the base station in order to get the aim that the base station is compatible with different RET equipment type.

由上述本发明提出的技术方案可以看出，利用本发明可以实现基站对RET设备类型的自动识别，以达到基站兼容不同RET设备类型的目的。

Want to decide the azimuth of a mobile phone has two kinds of methods normally: The first kind of method is the GPS chip that the mobile phone uses, pass the satellitic network that in the sky covers the world and wireless communication to identify the trend with located mobile phone; The 2nd kind of method is three angular distance calculate a standard, mobile phone to around base the station issues signal, differ through calculating signal to arrive at base the time of the station will determine the mobile phone is located azimuth.

要确定一部手机的方位通常有两种方法：第一种方法是手机使用的GPS芯片，通过覆盖地球上空的卫星网络和无线通信来识别手机所处的方位；第二种方法是三角距离测算法，手机向四周的基站发出信号，通过测算信号抵达不同基站的时间来测定手机所处方位。

NGA periodically recomputes the positions of both the NGA and the Air Force tracking stations as part of efforts to maintain WGS 84 and improve the accuracy of the station positions.

国家地理情报局定期重新计算双方的牙和空军跟踪的立场，以努力保持 WGS84和改善基站的位置，精确度的部分基站。

The frame number synchronises MS and BTS operation on a time basis.

帧号码与移动基站和无线基站的操作在时间的基础上同步。

Adopting multiplexing technique and making use of communication line between CSC and CS to achieve simultaneous transmission of ISDN signal and electric power. According to the variation of circuit equivalent resistance to design detection circuit, which can judge that the line is short circuit or open circuit and the commercial power is working normally or failure. When the reserve power supply is working, the system judges its operation status by voltage and current detection circuit. Making use of the characteristic of the gas discharge tube to achieve suspension system detection of power line touching. Transmitting information collected up to PC by RS485 for the purpose of centralized monitoring.

采用复用技术，利用基站控制器和基站间的通信线路实现ISDN信号和电力的共同传输；根据线路等效电阻的变化设计探测电路，来判断开路、短路、市电供电、市电停电等情况；在后备电源工作时，通过电压、电流采样电路判断电源的运行情况；利用气体放电管的特性实现悬浮系统动力线搭接的检测；采用RS-485通信方式将采集到的现场信息上传以实现集中监控。

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国，慢性酒精中毒，肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题，你可以随时联系我。