Coexistence and Access Etiquette in the US Unlicensed PCS Band

David G. Steer

One-line summary: A set of etiquette rules to allow multiple systems to coexist in unlicensed PCS band, which is subdivided into "asynchronous" and "isochronous" (slotted) subbands.

Overview/Main Points

Listen before transmit (from 750us in async to 10ms in sync)
Limit transmitter power
Limit duration of single transmission, then backoff to allow others
Limit duration of total conversation (8 hrs)
Limit xmit BW: >50KHz async, >500KHz isochronous
Isochr band divided into eight 1.25MHz channels
U-PCS band is tucked between the send and receive bands for licensed PCS

Relevance

Feh.

Flaws

A laundry list of factoids, quantities, specs, etc. The high order bits above are all we really care about.

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