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➢ 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
HONGHXOIHNNOCGNOXGMINXMICNOUCMNOIMCMAUMTNIUOICNAICTTEAIOCTNIHONTNOETCLEOHCNGHOIENLSOOCLGOIE.G,SILETCSDOC..,OL.T, DLT.D.
different traffic in different place ➢ The signal of metro is very cute ➢ The signal will cause a more severe decline inside the trains when the train
Different operators
Repeater or micro cell
+
Distribution Solution
HONHGOXNIHNGOXCINNOGMCXOMINMUCMNOIUCMNAMTICIUOANTIIOCTEANCTTIHOENCNOHTLNEOOCGHLIOENSGOICLEOS.GC, ILOET.SD, CL.TOD.,. LTD.
➢ 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
2020/7/6
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 of investments, and have a big influence to the project construction . So we often use the way that more operators to share one Antenna feeder system.
➢ 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
➢ The signal is very unstable for the long tunnel
HONHGOXINHNGOCXNOINGMXCMINOUMCNOMICMUAMNTIIUOCNATICTIOEACNTIHOTNENOCTHLEONCGOHILENOSOGCLIOE.SG, ICLETOSD.C,. LOT.D, L.TD.
stops
HONHGOXINHNGOCXNOINGMXCMINOUMCNOMICMUAMNTIIUOCNATICTIOEACNTIHOTNENOCTHLEONCGOHILENOSOGCLIOE.SG, ICLETOSD.C,. LOT.D, L.TD.
2020/7/6
The wireless environment of waiting room
2020/7/6
The metro coverage
Eliminate the blind area
High quality of the signal
More and more user
Seamless converge Satisfy the customer requirements
The effect of metro coverage
2020/7/6
Thank You!
HONHGOXINHNGOCXNOINGMXCMINOUMCNOMICMUAMNTIIUOCNATICTIOEACNTIHOTNENOCTHLEONCGOHILENOSOGCLIOE.SG, ICLETOSD.C,. LOT.D, L.TD.
2020/7/6
Comfortable
Lots of blind spot
Timeless
Economic and social significant
Text in here
metro
Exist doppler effect
Quality of signal is badly in high-speed
HONGHXOIHNNOCGNOXGMINXMICNOUCMNOIMCMAUMTNIUOICNAICTTEAIOCTNIHONTNOETCLEOHCNGHOIENLSOOCLGOIE.G,SILETCSDOC..,OL.T, DLT.D.
HONHGOXINHNGOCXNOINGMXCMINOUMCNOMICMUAMNTIIUOCNATICTIOEACNTIHOTNENOCTHLEONCGOHILENOSOGCLIOE.SG, ICLETOSD.C,. LOT.D, L.TD.
2020/7/6
The wireless environment of exit tunnel
2020/7/6
Solution
Solution
Distinguish Uplink and Downlink
Tunnel coverage
Platform coverage
Exit covNNOGMCXOMINMUCMNOIUCMNAMTICIUOANTIIOCTEANCTTIHOENCNOHTLNEOOCGHLIOENSGOICLEOS.GC, ILOET.SD, CL.TOD.,. LTD.
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
HONHGOXINHNGOCXNOINGMXCMINOUMCNOMICMUAMNTIIUOCNATICTIOEACNTIHOTNENOCTHLEONCGOHILENOSOGCLIOE.SG, ICLETOSD.C,. LOT.D, L.TD.
2020/7/6
The wireless environment of the platform
2020/7/6
Solution
The coverage to the waiting room
➢ Leak cable ➢ Antenna array
HOHNOGNXGIHNXOICNNOCGMOXMINUMCNOUICMNAIMCTAIUOTNIOICTNEATCEIHOCNNHONTLOEOCLGOHIENGSOIECLSOC.G,OILE.T,SDLTC.DO.., LTD.
The solution for the metro coverage
HONGXIHNOCNOGMXMINUCNOICMAMTIUONICTEACTIHONNOTLEOCGHIENSOCLO.G, ILETSDC. O., LTD.
The background for metro construction
HONGHXOIHNNOCGNOXGMINXMICNOUCMNOIMCAUMTNIUOICNAICTEAIOCTNIHONTNOETCLEOHCNGHOIENLSOOCLGOIE.G,SILETCSDOC..,OL.T, DLT.D.
2020/7/6
The wireless environment of the tunnel
2020/7/6
Sketch map of the project
Coupler Master
Slaver
Leak cable
Master
Slaver
Optical cable
HONHGOXINHNGOCXNOINGMXCMINOUMCNOMICMUAMNTIIUOCNATICTIOEACNTIHOTNENOCTHLEONCGOHILENOSOGCLIOE.SG, ICLETOSD.C,. LOT.D, L.TD.
2020/7/6
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 antenna, 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.
