-- The realization of the world's longest highway tunnel group of network coverage of the entire route

Xinjin Expressway, the magnificent passage connecting Xinxiang of Henan Province and Jincheng of Shanxi Province, has a total distance of 69.754 kilometers. Among them, the spiral tunnel group located in the hinterland of Taihang Mountain consists of 9 tunnels with a total length of 28 kilometers and a height difference of up to 780 meters, which adopts the three-level interchange spreading way of wiring along the spiral rise of Taihang Mountain vein. With its long single hole, small turning radius, circling the number of circles and other characteristics, has become an important channel connecting the two provinces of Henan and Jin is known as “the world's first spiral tunnel group”.

It is such a complex group of highway spiral tunnels, to the communications construction has brought many challenges. One of the most prominent problems is the long-distance continuous coverage between tunnels, and most enterprises in the industry are unable to solve this problem. As the industry's leading communication base station antenna solution provider, with its excellent communication base station antenna R & D technical strength, professional services, rich experience in solving special scenarios, Guangzhou Sigtenna Technology Co., Ltd. has demonstrated its eye-catching technology in this construction: tunnel special lens antenna + tunnel wall antenna solution, realizing a full-frequency support of 690 ~ 960MHz /1710~2700MHz/3300~3700MHz provides strong support for the network coverage of this spiral tunnel cluster.

Sigtenna's latest tunnel lens antenna and tunnel wall antenna have the following obvious advantages: beam concentration, high gain, good directionality, easy installation, which improves the coverage effect and reduces the construction difficulty and safety risk. The antenna adopts wall-mounted design, compact shape, easy installation, small space occupation, adapting to various environments and installation needs. Meanwhile, it has good compatibility and can be seamlessly connected with other equipment and systems to realize cross-platform and cross-system communication and data transmission. The total coverage distance in the tunnel is about 38.9 kilometers, and the overall construction cost is 80% lower than that of leaky cable solution, and more than 50% lower than that of log-periodic antenna solution. The energy saving effect is obvious, the coverage distance of the single tunnel antenna is about three times higher than that of the log-periodic antenna; and the log-periodic antenna is single-polarized while the Sigtenna tunnel antenna is dual-polarized, which increases the capacity of the system by more than a factor of two. Sigtenna antennas are well suited for both installation and use.

Compared with other antenna technologies, Sigtenna's latest tunnel-specific lens antenna and tunnel wall antenna are deeply optimized, which not only reduces the workload and risk factor during the construction process, but also effectively exerts the antenna performance; by adopting the advanced antenna design technology, it can maintain stable gain and balanced beamwidth; it effectively guarantees the stability and high quality of the network signals inside the tunnel; With lower cost and higher performance, it helps to reduce the construction cost and operation cost and meet the demand of highway communication.

Guangzhou Sigtenna Technology Co., Ltd. gave full play to its expertise in communication base station antenna research and development, and worked closely with China Railway Tower to overcome a number of technical problems, so that Xinjin High-speed Spiral Tunnel Group has realized all-round and dead-angle-free network coverage inside the tunnel. Whether it is traffic monitoring, emergency communication or passengers' mobile Internet needs, they have all been fully satisfied. This remarkable achievement not only improves the informatization level of highway tunnels in Henan, connects the two provinces of Henan and Jin, but also sets a new benchmark for the construction of intelligent transportation.

The highway spiral tunnel cluster in Henan Province, as the longest spiral tunnel in the world, has now achieved full network coverage, a significant achievement that marks a new level of informatization of highway tunnels in Henan region. This achievement not only effectively connects the two provinces of Henan and Jinan, but also sets a new milestone for the construction of intelligent transportation. With the rapid change and widespread popularization of network technology, we have reason to believe that the future of transportation will become more convenient, intelligent and safe.

With the continuous progress of technology and the booming development of transportation, Guangzhou Sigtenna Technology Co., Ltd. will continue to play its technical advantages in the field of transportation and help the construction of transportation highway tunnels in Henan to a new height. Whether it is to improve the efficiency of the tunnel, or to enhance the safety performance of the tunnel, Guangzhou Sigtenna Technology Co., Ltd. will work side by side with the transportation builders in each region to create a better and more convenient travel environment.

Let's look forward to, in Guangzhou sigtenna's technical assistance, each region's transportation highway tunnel can be like a dragon soaring, for the history of this deep and full of vitality of the land injected more prosperity and development.