Distributed RAN (C-RAN)

ExteNet Systems Enables Advanced Mobile Connectivity with Centralized RAN (C-RAN) Network Architecture

Over the past few years, base station design has changed, going from mostly centralized architectures to split arrangements. C-RAN segregates the radio and digital baseband elements of the typical BTS. This allows the radio elements, more commonly called remote radio heads (RRHs), to be remotely distributed and then connected via fiber optic cable or other high bandwidth solutions back to the centralized digital baseband units.

By centralizing resource processing, operators are able to reduce site leasing costs while distributing the RF elements closer to the users. The real benefits come from better support for 4G LTE and LTE-Advanced (LTE-A) service for the Wireless Service Providers (WSPs). Both LTE and LTE-A require coordinated processing, and central management will produce efficiencies while reducing the amount of interference between increasingly dense RAN deployments. WSPs can take advantage of cloud computing and software-defined networking to improve upon distributed RANs.

With data usage patterns changing rapidly, distributed RANs are good solutions for operators already familiar with the distributed network topology such as Distributed Antenna Systems (DAS) and Small Cells. In addition to boosting coverage and capacity, distributed RANs can lower the cost of network deployment and support the drive toward an All-IP infrastructure.

Outdoor RRH nodes are typically located on existing infrastructure such as utility/telephone poles, street lamps or traffic signal poles which provide a high density of potential sites where these deployments take place. The ability to place RRH nodes almost anywhere makes these systems ideal to reach areas that are otherwise difficult to serve and/or require significant capacity solutions. ExteNet provides front haul (CPRI or OBSAI) to these sites via purpose built fiber optic or alternative wireless networks creating a foundation for a long term and scalable network architecture.

Today, 80% of all mobile traffic originates indoors but only a small fraction of existing commercial buildings have any viable indoor network wireless network solution. In the appropriate venues, RRH deployments can represent a cost effective methodology for enhancing the users’ mobile connectivity experience with Indoor RRH networks. ExteNet’s extensive portfolio of indoor venues presents a great proposition for cost efficient and high quality deployment of such solutions.

Distributed RANs greatly simplify wireless communications infrastructure by replacing legacy expansive rack units with compact base band units (BBUs). For WSPs seeking to keep up with the rapid growth of mobile data usage, distributed RANs are a cost-effective and efficient way to get the most out of existing infrastructure while scaling operations to meet new requirements. These architectures reduce signaling transmission latency, boost performance and lower the total cost of ownership of the networks. Distributed RAN solutions offer WSPs greater flexibility in addressing users in capacity challenged and hard-to-reach locations.

Key Benefits Of ExteNet’s Distributed RAN

Multi-carrier, Multi-technology support – a flexible, neutral-host approach ensures cost-effective utilization of resources and infrastructure to deliver network support to all technologies

Smaller Footprint - the distributed RAN provides distributed topology advantages while requiring less space, energy efficiency and overall cost reductions

Better Performance – Distributed RRHs utilize spectrum better, require less power, and offer improved reliability in comparison to macro cellular networks

Increased Services, Improved Flexibility - RRHs offer immense flexibility to WSPs to provide differentiated 4G LTE and LTE-A based services in a rapid, cost effective manner

Distributed Networks
DAS
Small Cells
Mobile WiFi
Distributed EPC
Global Services