Sistema WDM semiativo para transmissão Fronthaul 5G
Resumo do Produto
Após a implantação das redes 5G, a densidade das estações base será 2 a 4 vezes maior que a das redes 4G, e as restrições de fibra serão o principal problema enfrentado na implantação do fronthaul 5G. Para atender à rápida implantação de estações base e economizar efetivamente recursos de fibra em implantações de redes 4G e 5G, as operadoras adotaram uma solução que combina multiplexador WDM e módulos de luz colorida para obter cobertura rápida e de baixo custo. No entanto, também existem deficiências e pontos problemáticos nas aplicações práticas :
Soluções que utilizam tecnologias ativas WDM ou OTN podem resolver as dificuldades de gerenciamento de rede e seleção de rotas primárias/de backup em caminhos ópticos, mas também enfrentam desafios como altos custos e dificuldades no fornecimento remoto de energia.
Com base em acumulações técnicas anteriores e pesquisas sobre WDM ativo e passivo, e no entendimento profundo e contínuo combinado com os pontos problemáticos do cliente em relação às demandas de transporte de equipamentos de fronthaul, Guangzhou Rui Dong introduziu um WDM semi-ativo como uma solução para fronthaul de estação base.
A solução WDM semiativa utiliza equipamentos ativos na extremidade local e equipamentos passivos na extremidade remota, facilitando a implantação e a manutenção. Através de equipamentos locais, ele suporta gerenciamento de rede, proteção de linha e funções rápidas de localização de falhas OTDR. Os métodos de manutenção são convenientes e flexíveis, atendendo a requisitos de alta confiabilidade. Esta solução alivia significativamente a pressão sobre os recursos de fibra, ao mesmo tempo que equilibra as vantagens de custo, gerenciamento e proteção, auxiliando assim as operadoras na implantação rápida, de baixo custo e alta largura de banda de redes fronthaul 5G.
Esta solução é adequada para cenários com poucos recursos de fibra em estações base estendidas, configurações simples de rede dual-star ou tipo barramento (cobrindo cenários como rodovias, ferrovias de alta velocidade, túneis, pontes, etc.). Possui módulos de luz colorida localizados em equipamentos AAU e DU, usando tecnologia WDM para transmissão para economizar recursos de fibra e suportar funções de onda ascendente/descendente OADM. Ele também pode utilizar cabos de fibra de rota dupla para proteção de serviço de fronthaul, ao mesmo tempo em que oferece suporte a fibras fronthaul 4G legadas, alcançando fronthaul unificado para 4G/5G.
Fig.1 Diagrama de um esquema WDM semi-ativo
A arquitetura de rede da multiplexação por divisão de comprimento de onda semiativa (WDM) pode ser dividida em topologias estrela e barramento de acordo com cenários específicos.
Figura 2 Rede semi-ativa WWD-star
Figura 3 Rede de barramento WDM semi-ativa
Visualização do dispositivo
Dispositivo FW6600A do equipamento final local (slot 1U4 ativo)
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Módulo de Combinação e Divisão Remota (Passivo) |
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Equipamento final local FW6600B (slot 2U8 ativo)
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Rack de 19 polegadas (montagem remota em gabinete) |
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Equipamento final local FW6600C (slot 4U16 ativo)
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Caixa externa à prova d'água e à prova de poeira (parede/poste remoto) |
Características
It supports comprehensive access to wireless fronthaul and other services, taking into account wireless fronthaul, private line, and home broadband services, and maximizes the value of fronthaul networks；
Maximize optical fiber saving, one fiber can carry 9 channels of 4G & 5G fronthaul CPRI/eCPRI services；
The local side is active and the remote end is passive, and WDM technology is used to extend the physical channel of pure transparent transmission, without delay and jitter introduction；
It supports the monitoring function of the luminous power of each channel, which is easy to maintain and locate faults；
It supports 1:1 protection at the optical layer, and the protection switching time is less than 20 ms, improving network reliability；
The optical-layer protection function card can be selected according to the application scenario, and supports hot-swap and power-off/power-on-hold functions to ensure that the device does not affect service operation in the event of a power-off；
It supports SNMP, Web and other graphical interface network management；
Local end equipment active supports AC 220V, DC -48V power supply optional, and 1+1 power input protection；
The installation method is flexible, the central office equipment supports rack-mounted installation and wall-mounted installation, and the remote equipment supports rack-mounted, pole-mounted and wall-mounted installation, which is easy to install and plug-and-play；
The remote outdoor device meets the requirements of the IP67 standard and supports pole and wall mounting.
Local End Equipment
FW6600A - 1U Chassis
1U Chassis Front View
1U Chassis Back View
FW6600A is designed with a 1U standard 19-inch rack-mounted plug-in card structure, providing 4 business slots, 1 main control card slot, 1 fan slot, and 2 power slots (at the rear). It uses a front panel outlet method, with all optical interfaces and network management interfaces designed on the front；
The FW6600A-type 1U chassis has four service slots, and the NMS card occupies one slot, and can be inserted into a maximum of three service cards, which can support convergence in three optical directions.
Technical Specifications of FW6600A 1U Chassis
The name of the metric |
metrics |
|
Dimensions: |
482(W)×44(H)×320(D)(mm) |
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Weight (fully loaded) |
7.5kg |
|
TypicalPowerConsumption |
<30W |
|
Protection Features |
Hot-swappable NE management card without affecting existing services when failing |
|
StandardOperating Voltage: |
DC |
-36 V-72V |
AC |
90V -260V |
|
FW6600B - 2U Chassis
2U Chassis Front View
2U Chassis Back View
FW6600B is designed with a 2U standard 19-inch rack-mounted plug-in card structure, providing 8 business slots, 1 main control card slot, 1 fan slot, and 2 power slots (at the rear). It uses a front panel outlet method, with all optical interfaces and network management interfaces designed on the front；
The FW6600B-type 2U chassis has 8 service slots, and the NMS card occupies 1 slot, and can be inserted into a maximum of 7 service cards, which can support convergence in 7 optical directions.
Technical Specifications of FW6600B 2U Chassis
The name of the metric |
metrics |
|
Dimensions |
486(W)×86(H)×352(D)(mm) |
|
Weight (fully loaded) |
13.5kg |
|
TypicalPowerConsumption |
<50W |
|
Protection Features |
Hot-swappable NE management card without affecting existing services when failing |
|
StandardOperating Voltage: |
DC |
-36 V-72V |
AC |
90V -260V |
|
FW6600C -4U chassis
4U chassis front
4U chassis back
The FW6600C chassis adopts a 4U standard 19-inch rack-mount and plug-in card structure, and provides 16 service slots, 1 main control board slot, 1 fan slot, and 2 power supply slots in a single chassis. The front panel cable outlet mode is adopted, and all optical interfaces, power supply and network management interfaces are designed on the front；
The FW6600C-type 4U chassis has 16 service slots, and the NMS card occupies 1 slot, and can insert up to 15 service boards, which can support the convergence of 15 optical directions.
FW6600C 4U Chassis specifications
The name of the metric |
metrics |
|
Dimensions |
483(W)×178(H)×280(D)(mm) |
|
Weight (fully loaded) |
15.5kg |
|
TypicalPowerConsumption |
<80W |
|
Protection Features |
Hot-swappable NE management card without affecting existing services when failing |
|
StandardOperating Voltage: |
DC |
-36 V -72V |
AC |
90V -260V |
|
waves of Local End Equipment Mux&DeMux
Functional structure：
6 waves of Local End Equipment Mux&DeMux Functional structure (with optical power monitoring and optical protection)
Optical performance indicators
parameter |
unit |
index |
Number of channels |
|
6 |
Center wavelength |
nm |
1271、 1291、 1311、 1331、 1351、 1371 |
Center wavelength deviation |
nm |
±1.5 |
-1dB channel bandwith |
nm |
>14 |
Banding flatness |
dB |
<0.5 |
Mux&DeMux Channel insertion loss |
dB |
<1.5 |
Mux&DeMux Channel insertion loss uniformity |
dB |
<1.0 |
Adjacent channel isolation |
dB |
>25 |
Non-adjacent channel isolation |
dB |
>35 |
Wavelength Heat stability |
nm/℃ |
<0.002 |
Insertion loss heat stability |
dB/℃ |
<0.007 |
Polarization-related losses |
dB |
<0.2 |
Return loss |
dB |
≥45 |
Working temperature |
℃ |
-40～+85 |
Storage temperature |
℃ |
-40～+85 |
Working humidity |
|
5%～95% RH， No condensation |
The number of slots in the chassis |
|
1slot |
OTDR monitoring port |
|
With OTDR monitoring port (wavelength 1625/1650nm) optional |
Optical protection |
|
It can provide single-fiber main and standby optical path protection |
Optical protection switching time |
|
＜20ms |
Optical power detection range |
|
-50 dBm ~+25dBm |
Optical interface |
|
LC/UPC |
Indicator light description：
Pri：The main bypass indicator light, the light is on to indicate the main road, and the waiting to go off means the backup road；
Auto：Working mode indicator, the light on indicates automatic mode, and the light off indicates manual mode；
R1、R2：The light collection power alarm indicator of the main and backup roads of light protection indicates that the light collection is normal, and the light off indicates that the light collection is abnormal；
Button description：
SET：Press and hold for 5S to switch the working mode, and in automatic mode, short press the button to switch the active and standby routes.
Remote passive WDM
Remote 1U rack
The remote 1U rack is a 3-slot, 1U-high passive rack, which is suitable for inserting 3 remote combiner splitters, which can realize the compact installation of the remote combiner and splitter and save space in the equipment room. The 1U rack can be installed in a 19-inch cabinet.
n Size: 1U, 44 mm (H)× 438 mm (W), × 132 mm (D)
Figure 2.2.1 View of a remote 1U rack
Remote 3U rack
The 3U rack is a 16-slot, 3U-high passive rack, which is suitable for vertically inserting 16 remote combiners and splitters, which can realize the compact installation of remote combiners and save space in the computer room. The 3U rack can fit in a 19-inch cabinet.
n Size: 3U, 120 mm (H), 430 mm (W×), × 133 mm (D)
Figure 2.2.2 Rack view of the remote OPC1000-16
Remote outdoor boxes
The outdoor dust-proof box is a special box for outdoor wall-mounted or pole-mounted remote WDM system, which supports 1 or 2 built-in remote combination splitters, meets the requirements of IP67 standards, has a lightweight structure and is easy to install.
Size:365 mm (length)×290mm (width)×100 mm (height)
Figure 2.2.3 View of the remote outdoor dust box
waves remote passive WDM Mux&DeMux
Product illustration：
6 waves remote passive WDM Mux&DeMux（optical protection）
Functional structure：
Functional structure of the remote passive WDM
Optical performance indicators
parameter |
unit |
index |
Number of channels |
|
6 |
Center wavelength |
nm |
1271、 1291、 1311、 1331、 1351、 1371 |
Center wavelength deviation |
nm |
±1.5 |
-1dB channel bandwith |
nm |
>14 |
Banding flatness |
dB |
<0.5 |
Mux&DeMux Channel insertion loss(without optical protection) |
dB |
<1.2 |
Mux&DeMux Channel insertion loss (with Optical Protection) |
dB |
<4.5 |
Mux&DeMux Channel insertion loss uniformity |
dB |
<1.0 |
Exp interface loss uniformity |
dB |
<1.2 |
Adjacent channel isolation |
dB |
>25 |
Non-adjacent channel isolation |
dB |
>35 |
Wavelength Heat stability |
nm/℃ |
<0.002 |
Insertion loss heat stability |
dB/℃ |
<0.007 |
Polarization-related losses |
dB |
<0.2 |
Return loss |
dB |
≥45 |
Working temperature |
℃ |
-40～+85 |
Storage temperature |
℃ |
-40～+85 |
Working humidity |
|
5%～95% RH， 无凝结 |
colourful module
colourful module 25G/10km CWDM colourful module
Based on the wireless fronthaul passive wavelength division multiplexing system, the 25Gb/s SFP28 CWDM colourful module conforms to the MSA protocol, has the characteristics of low power consumption, small size, multi-rate, etc., is compatible with eCPRI (25G), CPRI 10, 25GE and other network applications, with a maximum transmission distance of up to 10 kilometers, RoHS compliant, and supports digital diagnostic functions.
Working temperature Commercial grade：0°C-+70°C Industrial grade：-40°C-+85°C |
Storage temperature Temperature：-40°C-+85°C Humidity：5%~95%no condensation |
Optical performance indicators
Product model |
Tx wavelength (nm) |
Rx wavelength (nm) |
Distance (km) |
Tx optical power range (dBm) |
Overload Optical Power (dBm) |
Ext (dB) |
Receiver Sensitivity (dBm) |
RSPD-25GC10--27 |
1271 |
1260~1620 |
10km |
0~+6 |
>+2 |
>3.5 |
<-13.8 |
RSPD-25GC10--29 |
1291 |
||||||
RSPD-25GC10--31 |
1311 |
||||||
RSPD-25GC10--33 |
1331 |
||||||
RSPD-25GC10--35 |
1351 |
||||||
RSPD-25GC10--37 |
1371 |
10G/10km CWDM colourful module
The 10Gb/s SFP+ CWDM colourful module based on the wireless fronthaul passive wavelength division multiplexing system conforms to the MSA protocol, has the characteristics of low power consumption, small size, multi-rate, etc., is compatible with CPRI 7/8, 10GE, STM-64 and other network applications, with a maximum transmission distance of up to 10 kilometers, RoHS compliant, and supports digital diagnostic functions.
| Working temperature Commercial grade：0°C-+70°C Industrial grade：-40°C-+85°C |
Storage temperature Temperature：-40°C-+85°C Humidity：5%~95%no condensation |
Optical performance indicators
Product model |
Tx wavelength (nm) |
Rx wavelength (nm) |
Distance (km) |
Tx optical power range (dBm) |
Overload Optical Power (dBm) |
Ext (dB) |
Receiver Sensitivity (dBm) |
RSPD-10GC10-27 |
1271 |
1260~1620 |
10km |
0~+3 |
>+1 |
>4 |
<-14.4 |
RSPD-10GC10-29 |
1291 |
||||||
RSPD-10GC10-31 |
1311 |
||||||
RSPD-10GC10-33 |
1331 |
||||||
RSPD-10GC10-35 |
1351 |
||||||
RSPD-10GC10-37 |
1371 |
NMS function
The semi-active wavelength division multiplexing system has the management function of central and remote devices, and supports configuration management, fault management, performance management, network topology management and other major functions. The network management function ensures that the requirements of monitoring, management, and production convenience in the overall principles of 5G fronthaul are met.
The basic functions are as follows：
(1) User and user group management
(2) User rights management
(3) Backup e recuperação de dados do sistema
(4) O sistema possui função de gerenciamento de log
(5) O sistema suporta a criação, consulta, exclusão, modificação e outras funções de gerenciamento de elementos de rede (equipamento de escritório central, equipamento remoto) e outros.
(6) O sistema suporta estatísticas e capacidades de consulta de slots, unidades, portas de serviço, canais e outros parâmetros do equipamento do escritório central.
(7) O sistema suporta o gerenciamento de configuração do equipamento do escritório central :
(8) O sistema suporta a consulta e configuração do gerenciamento de proteção :
(9) O sistema suporta funções como consulta e estatísticas de alarme, confirmação de alarme, eliminação de alarme, blindagem de alarme e consulta de filtragem de alarme.
(10) O sistema permite aos usuários especificar e consultar o monitoramento de desempenho dos elementos da rede;
(11) O sistema suporta gerenciamento de topologia de rede;
Função opcional de alarme SMS ;
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Endereço : Third floor, Building A, 118 Creative Park, No. 241 Bussiness Road, Huadu, Guanzhou, PRC
Tel. : +86 15989256178
Whatsapp : +86 15914235380
E-mail : sales@fiberwdm.com
Skype : 15914235380
