Ali Tahmasebi, head of IP transmission manager, Mobinnet, Iran, is speaking on Day Two of the LTE Backhaul Summit, collocated with the LTE World Summit 2013, taking place on the 24th-26th June at the 24th-26th June 2013, at the Amsterdam RAI, Netherlands. Ahead of the show we delve into details over backhaul technology choices and find out what he is looking forward at the LTE Backhaul Summit.
What challenges will the move to LTE have on your backhaul strategy?
Our main strategy to make our backhaul LTE-ready is to have a hierarchical structure with access, hub and metro levels. In this regard, the rollout of the network is very clear and straightforward. Nevertheless, it does raise a number of challenges, such as the number of metro and hub sites per city, and leasing and building those sites in a technically coordination fashion.
The major challenges are technical. The final decision on RAN strategy and use of either LTE-TDD or LTE-FDD has a direct impact on backhaul product type and features. Planning an optimum synchronisation strategy to handle 1588v2, defining the advanced QoS and traffic engineering features to handle congestion, end-to-end IPv6 network deployment, interoperability between different backhaul products and backhaul to core connection topology are the main challenges.
The LTE World Summit, the premier 4G event for the telecoms industry, is taking place on the 24th-26th June 2013, at the Amsterdam RAI, Netherlands. Click here to download a brochure for the event.
Is fibre always the preferred solution over microwave backhaul?
As a fibre optic connection can handle a huge amount of traffic on a long distance, without a negligible loss, it is very interesting for backhaul scenarios. However, deploying a ubiquitous fibre network is a time and cost consuming project and most of the time is out of a mobile network operators’ scope. Most of the fibre optic networks belong to companies that are not MNOs, so it is not cost efficient to lease fibre pass or leased BW for all the sites. The traffic of an LTE site with normal configuration is around 100-300Mbps. Todays, it is easy to handle this amount of traffic with MW radios from different vendors. As a broadband backhaul deployment scenario, the connections at metro level could be based on fibre optic rings, in hub level on high capacity nodal MW radio links and in access level they would be based on P2P MW radio links.
Some analysts say that the dedicated backhaul required for small cells could destroy the economic benefits that they might bring in terms of offload. What’s your view?
I don’t believe any dedicated backhaul is required for small cells. Full outdoor E-band MW radios are the best choice to handle the traffic. The main point is to offload Internet traffic directly to Internet without passing through the mobile operator’s core network. However, the charging and pricing method here is a challenge.
What is the most exciting development in LTE that you expect in the next 12 months?
From my personal point of view, the most exciting developments will be the move towards LTE-Advanced, standardization and releasing the new frequency bands, VoLTE improvements, small cells concept improvements and IMS deployments at the core of mobile networks.
Why is the LTE World Summit such an important show for you to attend?
This year, the LTE World Summit 2013, has been co-located with the LTE Backhaul Summit. Referring back to our experience at the LTE Asia 2012 and LTE MENA 2013, the event gives access to the leading LTE operators, vendors and opportunity to learn from the success stories of handling of data explosion, mobile broadband and LTE networks deployment. As the biggest LTE event in the world, I expect it to address operator challenges in data monetisation, OTT services, VoLTE and small cells.