(Копія) Reading. History of Cellular Phones

HISTORY OF CELLULAR PHONES

Cellular is a type of wireless communication that is most familiar to mobile phones users. It’s called ‘cellular’ __________ to divide a service area into multiple ‘cells’.

HISTORY OF CELLULAR PHONES

Cellular calls are transferred from base station to ___________ from cell to cell.

HISTORY OF CELLULAR PHONES

The basic concept of cellular phones began in 1947, _________ and realized that by using small cells (range of service area) with frequency reuse they could increase the traffic capacity of mobile phones substantially. However at that time, the technology to do so was nonexistent.

HISTORY OF CELLULAR PHONES

Anything to do with broadcasting and sending a radio or television message out over the airwaves comes under Federal Communications Commission (FCC) regulation. A cell phone is __________. In 1947, AT&T proposed that the FCC allocate a large number of radio-spectrum frequencies so that widespread mobile telephone service would become feasible and AT&T would have a incentive to research the new technology.

HISTORY OF CELLULAR PHONES

We can partially blame the FCC for the gap between the initial concept of cellular service and its availability to the public. The FCC decided to limit the amount of fre-quencies available in 1947, the limits made ___________ possible simultaneously in the same service area — not a market incentive for research.

HISTORY OF CELLULAR PHONES

The FCC reconsidered its position in 1968, stating “if the technology to build a better mobile service works, we will increase the frequencies allocation, freeing the airwaves for more mobile phones”. AT&T and Bell Labs proposed a cellular system to the FCC of ________, each covering a ‘cell’ a few miles in radius and collectively covering a larger area. Each tower would use only a few of the total frequencies allocated to the system. As the phones traveled across the area, calls would be passed from tower to tower.

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Americans say “cell phone”, but people in the United Kingdom say __.

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I was supposed to meet Bill at the library, but he __ me that he would be late.

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How much was your cell phone __ this month?