 First let me explain that a Polo Mint is a
UK style of popular sweet with a hole in the middle (it's torridal in shape, like a lifebelt).
This concentric ring illustrates what could be a popular strategy for initial
LTE network rollout, where the central metropolitan districts and distant rural
areas are addressed first. This may mean that femtocells are even more relevant
in the suburban areas that would be bypassed during the early phase.
3G Islands of Coverage
When 3G was first rolled out, the term
"islands of coverage" was used. Since it wasn't possible to rollout nationwide
coverage instantly, the 3G cellsites were first deployed within the areas of
highest traffic and 3G service demand. Typically this meant the metropolitan
areas and city centres, where the rapid return on investment made the best
commercial sense.
This 3G rollout approach was called
"Islands of Coverage" - a scheme where the "sea of 2G" was additionally
supplemented by areas of 3G where faster data speeds were available. Over time,
the islands have gotten larger, but there are still many areas in most
countries which only have 2G.
4G addresses two separate problems
The initial LTE rollout approach may be
somewhat different from 3G. In the US, LTE technology is being used to solve
two separate issues:
-
Providing high data capacity
and performance in concentrated metropolitan areas
-
Extending voice and data
services out to previously underserved areas
This can be illustrated as a concentric
ring, where the "bulls-eye" in the middle gets full LTE service and the outside
ring is also addressed. Suburban areas in between are bypassed. I've termed
this the "polo mint" approach to LTE network rollout after the famous torrodial-shaped
sweet with the hole in the middle.
Verizon, the largest US network, acquired
spectrum at the low frequency of 700MHz which is being used for LTE rollout.
This frequency enables much longer range transmission and better in-building
penetration - ideal for solving the two issues above.
This may be less valid in other countries
where LTE is planned for deployment at higher frequencies (such as 2.3GHz or
2.6GHz). These frequencies won't provide the long range or in-building
penetration that Verizon will benefit from.
What does this mean for suburban users
If you live in the suburbs you may find
that LTE service doesn't appear in your area that quickly. If you are already
unhappy with the 3G service inside your home, LTE won't come along to solve
that issue quite so soon.
Femtocells to the rescue
Femtocells offer a quick and effective
solution for suburban areas where users consume substantial amounts of wireless
data service at home. By offloading such data usage, it also frees up capacity
for other users who need it when outdoors.
Summary
The timeframe for femtocell deployment
(whether 3G or 4G can be debated separately) is justified even more in those
areas. It could be said that the rollout of femtocells matches the polo mint
profile - addressing the suburban areas first.
And perhaps femtocells could come with a
box of candy to sweeten the deal and further stimulate takeup.
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