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1月25日，设计时速200公里的渝贵铁路全线开通运营，同时，由中国铁塔贵州分公司领军，联手移动、联通和电信三大运营商全力打造的渝贵铁路贵州段通信网络也同步开通，实现全程无缝连接，创造了贵州高铁项目通信建设新的里程碑。

作为渝贵铁路重要配套工程，渝贵铁路（贵州段）公网覆盖项目被列为贵州通信行业2017年的重点工程，采取了由铁塔贵州分公司牵头，三家运营商联合采购施工和监理的建设新模式，铁塔贵州分公司克服交通不便、协调难度大、施工时间紧、调试环节多等诸多困难，与三家运营商共同作业，仅用时120天就完成了渝贵高铁贵州段境内设备全部开通与调测。

据悉，在渝贵铁路试运行阶段，贵阳多家媒体记者随车体验了“陆地航班”运行情况，均表示在渝贵铁路(贵州段)内，手机连接到4G网络全程无卡断，上网“冲浪”感受良好。

渝贵铁路沿线桥梁多、隧道多，总体桥隧比占到了75.38%，通信设施铺设建设难度较高，铁塔贵州分公司经过多次研究，采取了一系列高科技手段，如在隧道内选择合适位置悬挂一种特殊的信号电缆(漏泄同轴电缆)，使信号更加稳定、网速更快。经测试，三大运营商网络在高铁车厢及铁路沿线的信号质量提升了25%，4G平均下载速率达到40Mbit/s以上,以下载一部2G大小的电影为例，仅需不到50秒，建设效率大为提高。

为了有效节约社会资源，同时又满足三家运营商通信建设需求，也为了让乘客体验4G网络时代的高速网络品质，铁塔贵州分公司最大限度实现通信设施的共建共享，不论哪一家运营商，都能够享受最快最好的4G网络。与传统的三大运营商自建方式相比，铁塔贵州分公司的共建共享实现单公里造价下降30%，节约行业投资6500余万元。

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On January 25, the Chongqing-Guizhou Railway, which is designed to run at a speed of 200 kilometers per hour, opened at the same time, and the communication network of the Guizhou section of the Chongqing-Guizhou Railway, which was built by China Tower Guizhou Branch and jointly operated by China Mobile, Unicom and telecom operators, also opened at the same time, realizing the seamless connection of the whole journey, creating a new communication construction for the Guizhou high-speed railway project. Milestone.

As an important supporting project of Chongqing-Guizhou Railway, the public network coverage project of Chongqing-Guizhou Railway (Guizhou Section) has been listed as the key project of Guizhou telecommunication industry in 2017. A new construction mode, led by the Guizhou Branch of the Iron Tower and jointly procured by the three operators for construction and supervision, has been adopted. The Guizhou Branch of the Iron Tower overcomes the traffic inconvenience and the difficulty of coordination. It took only 120 days to complete the commissioning and commissioning of all the equipment in Guizhou section of Chongqing-Guizhou high-speed railway.

It is reported that during the trial run of the Chongqing-Guizhou Railway, a number of media reporters in Guiyang experienced the operation of "land flights" on the train. They all said that in the Chongqing-Guizhou Railway (Guizhou section), mobile phones were connected to the 4G network without card interruption throughout the journey, and surfing the Internet felt good.

There are many bridges and tunnels along the Chongqing-Guizhou Railway. The overall bridge-tunnel ratio accounts for 75.38%. It is difficult to lay communication facilities. After many studies, the Guizhou Branch of the Iron Tower has adopted a series of high-tech measures, such as hanging a special signal cable (leaky coaxial cable) in a suitable position in the tunnel to make the signal more stable. Fixed network speed is faster. Tests show that the signal quality of the three operators'networks has been improved by 25% in the high-speed railway carriages and along the railway lines, and the average download rate of 4G has reached more than 40 Mbit/s. For example, it takes less than 50 seconds to download a 2G movie, thus greatly improving the construction efficiency.

In order to effectively save social resources, while satisfying the communication construction needs of the three operators, and to let passengers experience the high-speed network quality of the 4G network era, the Guizhou Branch of the Iron Tower maximizes the co-construction and sharing of communication facilities, regardless of which operator, can enjoy the fastest and best 4G network. Compared with the traditional way of self-construction of the three operators, the cost of Co-construction and sharing of Guizhou Iron Tower Branch has been reduced by 30% and the industry investment has been saved by more than 650 million yuan.

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