As a vast territory, large population big country, railway has become China's important infrastructure and popular means of transportation, in comprehensive transportation system in our country is in a leading position. So the state attaches great importance to the investment and development of the railway, especially after entering the 21st century, our country railway in high-speed development, from the stone too line to connect Hong Kong, and then to the beijing-shanghai high-speed railway, etc., until today, the high-speed railway construction blueprint of grand continues.
2016 was the start of the implementation of "much starker choices-and graver consequences-in planning implementation, according to the railway informationization" much starker choices-and graver consequences-in planning in this paper, the situation of railway development, the requirement of the informationization, driven by reform and innovation, to develop modern logistics as the main direction, adhere to the integration operation, intensive development, professional management, promote the development of railway transformation to modern logistics, construction of intelligent railway, promote business innovation and enterprise innovation, will become the top priority of railway informatization.
Say goodbye to analog wireless LieDiao system, embrace the GSM - R
However the current our country railway transportation system (existing) adopted by the traditional wireless communication system, simulation of wireless LieDiao system, in the parallel scheduling and centralized scheduling, reliability, security and data transmission capacity, and other areas have begun to show, has become the influence the operational efficiency of railway and the railway business development "bottleneck".
In particular, analog wireless LieDiao system in our country exist the following problems: first, the single frequency simplex, same frequency interference is serious, voice quality is poor, pose a safety hazard. Second, the system is based on civilian interphone, technology based system lag behind, in particular, FDMA system performance is generally, weak anti-interference ability, low reliability; Third, the function of humble, unable to support new business; railway Fourth, there is no core network, can't system networking, unable to switch, the business is difficult to continuous and so on.
More importantly, the analog wireless systems used by 450 million frequency has been extended use, will be back by the ministry of industry and informatization, it also led to the wireless industry chain accelerated atrophy, system maintenance in the future will also be a problem. Therefore, the current our country existing lines used in the simulation of wireless system upgrade has become a must, and GSM - R network is the ideal replacement.
