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1、The solution for the metro coverage Internal Use Only2009-09-01 HONGXIN COMMUNICATION TECHNOLOGIES CO., LTD. * The background for metro construction * Text in here metro Comfortable Timeless Economic and social significant Lots of blind spot Exist doppler effect Quality of signal is badly in high-sp
2、eed HONGXIN COMMUNICATION TECHNOLOGIES CO., LTD. The metro coverage * More and more user Seamless converge High quality of the signal Eliminate the blind area Satisfy the customer requirements The effect of metro coverage HONGXIN COMMUNICATION TECHNOLOGIES CO., LTD. The wireless environment of the t
3、unnel * Almost all kinds of wireless signals inside the tunnel are in the blind area A larger flow of people inside the metro, so there will be more higher traffic It is easy to great the fast decline The signal of metro is very cute Train cars will cause the shielding of the wireless signal HONGXIN
4、 COMMUNICATION TECHNOLOGIES CO., LTD. The wireless environment of the platform Almost all kinds of wireless signals inside the platform are in the blind area There are different numbers of people in different station ,so also have different traffic in different place The signal of metro is very cute
5、 The signal will cause a more severe decline inside the trains when the train stops * HONGXIN COMMUNICATION TECHNOLOGIES CO., LTD. The wireless environment of waiting room Almost all kinds of wireless signals inside the metro are in the blind area The signal of metro is very cute The walls of the wo
6、rking area block the signal very serious * HONGXIN COMMUNICATION TECHNOLOGIES CO., LTD. The wireless environment of exit tunnel The signal is very unstable for the long tunnel * HONGXIN COMMUNICATION TECHNOLOGIES CO., LTD. Solution Solution Distinguish Uplink and Downlink Tunnel coverage Platform co
7、verage Exit coverage HONGXIN COMMUNICATION TECHNOLOGIES CO., LTD. * Solution Distinguish Uplink and Downlink For the reason that there are so many wireless signals in the metro, if every operator use own system, it will lead to duplication ofoperator use own system, it will lead to duplication of in
8、vestments, and have a big influence to the project construction .investments, and have a big influence to the project construction . So we often use the way that more operators to share one So we often use the way that more operators to share one Antenna feeder system.system. * Repeater or micro cel
9、l Distribution Solution Different operators+ HONGXIN COMMUNICATION TECHNOLOGIES CO., LTD. Solution Tunnel coverage Base on the wireless environment of tunnel, for the special influence for the signal, there will be a fast decline When the signal transmit in the tunnel, But if we use the direction an
10、tenna, we still can not solve the fast decline. These situation will case the unstable of the signal, and there will be the huge influence when the train pass by. So we use the leak cable do the distribute system for the metro. * HONGXIN COMMUNICATION TECHNOLOGIES CO., LTD. Solution The coverage of
11、the platform For the reason that the platform with the tunnel in the some plate, we do not do the coverage to the platform in the normal situation, but when there are big obstacles in the platform, we should use the leak cable do the coverage * HONGXIN COMMUNICATION TECHNOLOGIES CO., LTD. Solution T
12、he coverage of exit tunnel We use the leak cable or direction antenna do the coverage to the long tunnel we use the ceiling antenna do the coverage to the short tunnel * HONGXIN COMMUNICATION TECHNOLOGIES CO., LTD. Solution The coverage to the waiting room Leak cable Antenna array * HONGXIN COMMUNICATION TECHNOLOGIES CO., LTD. Sketch map of the project * Coupler Master Slaver Leak cable MasterSlaver Optical cable HONGXIN COMMUNICATION TECHNOLOGIES CO., LTD. Thank You! *HONGXIN COMMUNICATION TECHNOLOGIES CO., LTD.
