Hi Frank:
Same spectrum as LMDS, but perhaps less of it, with
higher-order QAM modulation, and highly directional links.
There was an article on this topic in Telephony Magazine
recently. It pointed out that mesh-based networks require
less BW, such as the B block of the LMDS auction, whereas
PMP requires the A block. However, it seems to me that PMP
will be able to add easily new users, while mesh-based networks
require network reconfigurations to add new users. Specifically,
suppose you have already set up a ring network, and want to
add a customer between two vertices of a wireless segment,
you would have to perform 3 visits (one to the new customer,
and one to the neighbors on each side to realign transmitters
and receivers), instead of one. So, for well-defined applications,
mesh-based networks might be attractive, but for a large
market, PMP probably has an edge.
Best regards,
Bernard Levy |
