Question

谁能把下面关于通信掉话的文章翻译成英文（急用）

千万千万不要用翻译软件翻译的，谢谢了，急用！！！！需要翻译的内容如下：
一、关于常见掉话的原因
1.基站硬件引起的掉话。基站设备的完好及正常运行是无线通信正常工作的基础。基站运行一段时间，随着期间的老化，往往会出现一些问题，这些问题有可能引起通信故障。如由于BTS单板故障产生的掉话；由于两副天线俯仰角不同造成覆盖范围不同儿产生的掉话；由于垂直极化天线安装方位角不一致儿产生的掉话；由于天馈线老化，损耗增大，导致信号衰减过大而产生的掉话；由于两副天线之间的距离过小，相互干扰而产生的掉话等等都是由于基站硬件引起的。
2.切换过程中的掉话。包括局间（MSC、BSC之间）切换、小区之间切换、电平引起的切换、功率预算引起的切换。切换过程中的掉话在总的掉话中占有相当一部分比例。无线小区间、层间的切换掉话，除了与无线网络配置有关，很大一部分是由于无线资源不足造成的。我们在分析网络性能，由于信道繁忙，请求切出的呼叫在不到目标信道返回时，经常发现高阻塞的站点掉话率往往也较高。因为在切换回源信道时，源信道已分配给另一用户，在这种情况下，便产生掉话。可以说，高阻塞直接导致掉话。由于切换而导致的掉话也可以在：1）基站做分担话务量的切换时，一些切换请求会因为切入小区的信号强度太弱而掉话。原因是在BSC中，我们对手机的接受信号强度还达不到最低门限104dBm，因此，手机无法建立呼叫。2）有一些小区由于相邻小区都很繁忙，造成忙时目标基站无切换信道，致使手机用户在进行切换时无法占用相邻小区的空闲话音信道。此时BSC讲呼叫重建（Direct Retry），若主叫基站的信号此时不能满足最低工作门限或无空闲话音信道，则呼叫重建失败，导致掉话。
3.频率干扰引起的掉话。频率资源有限，市区内基站站间距小，基站比较密集，使频率规划有一定难度，存在同频、临频干扰。干扰分上行干扰和下行干扰。上行干扰主要是同频干扰和外界信号干扰，下行干扰主要是频率干扰。当手机在服务小区中受到很强的同频或临频干扰信号时，会引起误码，信号质量恶化，使手机无法准确解调临近小区的BSIC码，或不能正确接受移动台测量报告，造成不切换活切换失败。若切换失败且不能返回源信道，则造成掉话。
4.覆盖不好引起的掉话。由于移动电话是通过无线信道对服务区内的移动台提供服务的，所以蜂窝小区内的无线信号覆盖是移动台能否通话的前提。小区覆盖与基站所在地的周围环境有直接关系。建筑密集区、开阔地带、水面的无线信号传播特性都不一样。小区覆盖不理想将造成不必要的掉话。如越区覆盖，小区旁瓣过大，小区覆盖受楼群阻挡覆盖减小。另一方面，天线设计、安装的合理与否也影响网络性能。天线作为无线信号的最终发射部分，在移动通信网中具有举足轻重的作用。在CQT测试过程中，我们曾遇到这种情况，在某一天线后约150m处收到-85dB的信号，这种信号在频率规划时难以预料，因此它对网络造成的干扰较难控制。天线的种类及增益都对天线信号的覆盖残生影响。

Answer 1

I, on the reasons for the common Diaohua
1. Diaohua arising from the base station hardware. The base station equipment intact and normal operation of wireless communications is the basis for normal work. Base stations operating for a period of time, as during the aging, often in some of the problems, these problems are likely to cause communication failure. As if the failure of the BTS veneer Diaohua because two different antenna pitch angle of coverage of the different children Diaohua; vertical polarization because of inconsistencies azimuth antenna installation of the child Diaohua; days because of feeder aging, loss increase , Lead to signal decay caused by excessive Diaohua; two antennas because of the distance between the small, mutual interference and the Diaohua, and so on are all due to hardware from the base station.
2. Diaohua in the process of switching. Including the Inter (MSC, BSC between) switch, switch between district, arising from the switch level, the budget arising from the power switch. In the process of switching in the overall Diaohua Diaohua occupies a considerable part of proportion. Wireless Community, the Inter-layer switch Diaohua, in addition to the configuration of the wireless network, wireless large part due to the lack of resources. In our analysis of network performance, due to the busy channel, cut the request to call in less than a goal channel return, often found high rates of blocking the site Diaohua often higher. Because the switch back to the source channel, the source channel has been allocated to another user, and in these circumstances, we have Diaohua. It can be said that high Diaohua a direct result of obstruction. As a result of the switch Diaohua can also: 1) Traffic sharing base stations to do the switch, switch some of the request because of involvement of the community and Diaohua too weak signal strength. Reason is that the BSC, we accept the phone's signal strength has not yet reached the minimum threshold 104 dBm, therefore, unable to establish the phone call. 2) there are some adjacent area because of very busy area, resulting in busy at the target base station without switching channels, resulting in switching mobile phone users can not occupy the adjacent district of free voice channel. At this point BSC stresses reconstruction Call (Direct Retry), if the base station calling the signals at this time can not meet the minimum threshold of work or free voice channel, the failure of reconstruction call, resulting in Diaohua.
3. Diaohua caused by frequency interference. Frequency of limited resources, urban space station small base stations, base station-intensive compared to a certain frequency planning more difficult, the existence of the same frequency, temporary frequency interference. Interfere with the uplink and downlink interference interference. Uplink interference is the same frequency interference and outside signal interference, downlink frequency interference is the main interference. When the phone in the service area are very strong in the same frequency or the Provisional frequency interference signals, will cause error, signal quality deterioration, so that the phone can not accurately demodulator BSIC approaching the area code, or can not accept Taiwan's mobile measurement report, causing Not to switch live to switch failure. If the switch failed and can not return to the source channel, causing Diaohua.
4. Diaohua caused by poor coverage. As mobile phone services through wireless channel to the region to offer mobile services, cellular wireless signals within the area covered is the mobile station can call the premise. Area coverage and location of the base station is directly related to the surrounding environment. Construction-intensive areas, open areas, and surface characteristics of the wireless signal transmission is different. Area coverage is not ideal will result in unnecessary Diaohua. If the coverage area, district sidelobe too large, complex area covered by blocking coverage decreases. On the other hand, antenna design, installation of reasonable or not also affect network performance. As a wireless antenna signal the final launch of the mobile communication network has a pivotal role. CQT in the course of testing, we had encountered such a situation, in a post about 150 m antenna receiving the signal -85 dB, this signal in frequency planning difficult to predict, so the disruption caused its network more difficult to control. And the type of antenna gain antenna signal to all the coverage Cansheng impact.