Shamim Nael, technical manager, Mobinnet, Iran is speaking on Day Two of the LTE MENA conference, taking place on the 13th-14th May 2013 at the Jumeirah Beach Hotel, Dubai, UAE. Ahead of the show we speak to him about the transition of Mobinnet from WiMAX to LTE and about his concerns regarding the development of the TDD eco-system.
How are you managing the transition from WiMAX to TD-LTE?
By carefully considering the future of our network growth, we ensured that we were future-proofed by buying equipment that supported LTE. We also designed the backbone to be powerful enough to meet the all the standards and features that are already being used in modern high-tech telecom environments.
What are the chief technical challenges you expect to face over the next 12 months?
One of the biggest challenges for us will be transitioning into an IPv6 world. Despite several committees working together on a conversion program (including Mobinnet), there is still no announcement from the regulatory organisation about how and when we’re moving over.
Does it make sense to think of LTE as a fixed-line replacement in certain cases?
I don’t think so. In my opinion fixed lines will not be replaced by radio technologies. History shows both fixed and mobile networks developing in parallel, supporting high-tech services with no harm to each other. I remember what happened when IP technology leaked into Telecom world and made a huge revolution on it. We need to keep in mind it’s not the first nor last time that some major technologies may cause remarkable changes in core systems.
What do you consider to be the greatest benefits of the TD-LTE eco-system?
What are the trade-offs between FD-LTE and TD-LTE? The main differences between them lie in their band type. FD-LTE requires paired spectrum with different uplink and downlink channels. TD-LTE uses unpaired spectrum, transmitting uplink and downlink assignments on the same channel. Thanks to the TD-specific frame structure, TD will typically have a smaller link budget than FD. This means that TD-LTE usually caters for smaller cells than FD-LTE. So it’s up to provider’s policies to choose whether use TD, FD or mixed of both in their network. In short, I believe TD-LTE offers more robust radio performance in city environments and also a simpler network implementation because of single-band operation.
The LTE MENA conference is taking place on the 13th-14th May 2013 at the Jumeirah Beach Hotel, Dubai, UAE. Click here to find out more about the event.