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Since elevators are located inside buildings and they are obstructed by lift wells
and the elevator casings, there is absolutely no signal in elevators, which always bring
inconvenience to the users in elevators. Therefore, the wireless network signal coverage for
elevators is very beneficial and important to the improvement of operator’s image and
reputation…
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Nowadays, tunnels commonly exist along some road or railway lines. Tunnel is of long and narrow shape, and is enclosed by mountains
which often obstruct network signals coming into it, so some parts inside
the tunnel turn into blind spots. Hence, to fulfill the coverage for tunnels
is key in realizing seamless network coverage and thereby increase operators’
integrated competence…
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Due to high speed, high density, high punctuality rate and high reliability,
high-speed railways are favored by people. However, high-speed railways
have high body loss, high speed, long lines and other characteristics, and have
serious network problems of high signal disconnection rate for cellphone users
in carriages, poor call quality, reduction in throughput of data traffic and
even signal disconnection, so good high-speed railway covering can effectively
improve user experience and the brand effect of network operators…
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As the subway run underground, so the range of tunnel and station sites
are mobile signal blind. The city subway traffic flow, traffic is very
considerable, so building the subway network
coverage can be achieved very good economic and social benefits …
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Since roads and railways are blocked by mountains or other things,
continuous coverage cannot be realized by only depending on BSs. So some
blind spots appear especially in upland, which thus brings inconvenience to MS users’
communication in vehicles and will also make a dent in operator’s image. Therefore, the coverage
for roads and railways seems to be very important in order to safeguard the reputation and image
of the operator...
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