Ericsson fibre fronthaul solution deployed for China Mobile LTE C-RAN

Ericsson provides China Mobile with managed, high-availability WDM networking for CPRI using the PAU 6000 fibre fronthaul product family

Ericsson fibre fronthaul solution deployed for China Mobile LTE C-RAN

China Mobile has collaborated with Ericsson to adopt a wavelength division multiplexing (WDM) fibre fronthaul networking solution with the PAU 6000 product family for its first commercial deployment of a TD-LTE network, based on a centralised radio access network (C-RAN) architecture.

The superior radio network performance provided by this system benefits China Mobile’s bottom line and provides its customers with a better mobile broadband experience. As a result, C-RAN and fibre fronthaul are attracting international attention with several operators conducting investigations and trials of these technologies.

Key to the successful C-RAN deployment of China Mobile’s TD-LTE C-RAN in the Qingdao Development Zone was the low capital and operational cost of the remote radio locations, which have only an outdoor antenna and the RRU (remote radio unit) without an air-conditioned cabinet. The PAU 6000 had to be as simple as ‘plug and play’ for the technicians; it had to be rugged for the outdoors and no bigger than the RRU, while consuming very little power.

China Mobile’s C-RAN enables a lower total cost of ownership by centralising baseband/main units (BBUs/MUs) into one location and through its existing fibre network and the PAU 6000, providing common public radio interface (CPRI) communication to its remote radio units located at a simplified radio site.

The C-RAN based architecture with high-speed, low-latency CPRI fibre links enables tighter radio multipoint coordination for better LTE network utilization and reception.

Jan Signell, head of Ericsson Northeast Asia, said: “Ericsson’s focus on enabling China Mobile’s desire for a cost-effective, low-power, environmentally rugged WDM networking product with high performance and fast deployment for its C-RAN initiative has led to the development of the PAU 6000 family of fibre fronthaul products.”

The PAU 6000 is ideal in fibre-rich urban areas, enabling the deployment of cost-optimized small cells for extending application coverage. The product family can also be quickly deployed in an outside environment along with the RRU for a small, very low-power footprint at the antenna location, without the need for an environmentally controlled cabinet.

Not only does the PAU 6000 provide protected CPRI links up to 10Gbps in a managed ring network, but also 10Gbps Ethernet as well for Wi-Fi.

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