Minimizing power is rule #2 per Paul Banan.
SOME KINDERGARTEN RULES (written in 1994)
To take the fullest advantage of our new technology with its sharing
of a common resource requires that our smart transmitters and
receivers cooperate. This may sound complicated, but the rules to make
maximum effective use of the shared band are simple -- primarily a
matter of common decency in sharing resources. The rules are somewhat
similar to those you learned in kindergarten, assuming you lived in a
tough neighborhood.
Rule #1. Keep away from the big bullies in the playground. (Avoid the
strongest signals.)
Rule #2. Share your toys. (Minimize your transmitted power. Use the
shortest hop distances feasible. Minimize average power density per
Hertz.)
Rule #3. If you have nothing to say, keep quiet.
Rule #4. Don't pick on the big kids. (Don't step on strong signals.
You're going to get clobbered.)
Rule #5. If you feel you absolutely must beat up somebody, be sure to
pick someone smaller than yourself. (Now this is a less obvious one,
as weak signals represent far away transmissions; so your signals will
likely be attenuated the same amount in the reverse direction and
probably not cause significant interference.)
Rule #6. Don't get too close to your neighbor. Even the weakest
signals are very strong when they are shouted in your ear.
Rule #7. Lastly, don't be a cry baby. (If you insist on using obsolete
technology that is highly sensitive to interfering signals, don't
expect much sympathy when you complain about interfering signals in a
shared band.)
Bob