U-PCS

AcronymDefinition
U-PCSUnlicensed Personal Communication System (also abbreviated UPCS)
References in periodicals archive ?
The second distinguishing characteristic of the U-PCS band, and likely a critical component in stifling the development of U-PCS devices, was the requirement that device makers pay to clear incumbent microwave users.
These factors alone are probably sufficient to explain the failure of U-PCS. It is difficult, therefore, to determine whether the addition of the third distinguishing feature--the requirement of a particular industry-agreed protocol--would have independently stymied the development and deployment of devices because it would limit the economies of scale of device chipsets to only the number of U-PCS devices sold.
Two important lessons come out of the U-PCS band experiment.