Plan a sectorised point-to-multipoint site: subscribers per sector, offered load, azimuth coverage and the subscriber ceiling.
Oversubscription works because subscribers do not all transmit at once, so the sector only has to carry the committed rate divided by the ratio. Inverting the same relationship gives the number of subscribers a sector can sell before the committed rates no longer fit. Point-to-multipoint sites fail commercially, not technically: sell one oversubscription ratio too aggressively and the sector saturates every evening at exactly the hour customers notice.
Point-to-Multipoint
offered load per sector = (subscribers ÷ sectors) × committed rate ÷ oversubscription ratio; subscriber ceiling = sectors × sector capacity × ratio ÷ committed rate.
offered load per sector = (subscribers ÷ sectors) × committed rate ÷ oversubscription ratio; subscriber ceiling = sectors × sector capacity × ratio ÷ committed rate. Oversubscription works because subscribers do not all transmit at once, so the sector only has to carry the committed rate divided by the ratio. Inverting the same relationship gives the number of subscribers a sector can sell before the committed rates no longer fit.
Point-to-multipoint sites fail commercially, not technically: sell one oversubscription ratio too aggressively and the sector saturates every evening at exactly the hour customers notice.
This calculator takes 6 inputs: Sectors on the tower, Azimuth beamwidth per sector, Subscribers served by the site, Usable capacity per sector, Committed rate per subscriber, Oversubscription ratio. The pre-filled defaults are a realistic starting point — replace them with figures from your own environment for a result you can act on.