Recently I came across this whitepaper by iGR, where they have done a case study on the SKT deployment using C-RAN. The main point can be summarised from the whitepaper as follows:
This approach created several advantages for SK Telecom – or for any operator that might implement a similar solution – including the:
- Maximum re-use of existing fiber infrastructure to reduce the need for new fiber runs which ultimately reduced the time to market and capital costs.
- Ability to quickly add more ONTs to the fiber rings so as to support additional RAN capacity when needed.
- Support of multiple small cells on a single fiber strand. This is critical to reducing costs and having the flexibility to scale.
- Reduction of operating expenses.
- Increased reliability due to the use of fiber rings with redundancy.
- Support for both licensed and unlicensed RAN solutions, including WiFi. Thus, the fronthaul architecture could support LTE and WiFi RANs on the same system.
Anyway, the paper is embedded below for your perusal and is available to download from the iGR website here.