:os_mac: Cellular Network in Mobile Computing

1. Purpose of the cellular networks:

1.1. Cellular network is an underlying technology for mobile phones, personal communication systems, wireless networking etc.

1.2. The technology is developed for mobile radio telephone to replace high power transmitter/receiver systems.

1.3. Cellular networks use lower power, shorter range and more transmitters for data transmission.

1.4. Cellular networks maintain information for tracking the location of their subscribers' mobile devices. In response, cellular devices are also equipped with the details of appropriate channels for signals from the cellular network systems. These channels are categorized into two fields.

1.4.1. 1) Strong Dedicated Control Channel

1.4.2. 2) Strong Paging Channel

2. History

2.1. 1. First commercial cellular network, the 1G generation, was launched in Japan by Nippon Telegraph and Telephone (NTT) in 1979.

2.2. 2. The NTT network had been expanded to cover the whole population of Japan and became the first nationwide 1G network.

2.3. 3. It was an analog wireless network

2.4. 4. The first commercial digital cellular network, the 2G generation, was launched in 1991. This sparked competition in the sector as the new operators challenged the incumbent 1G analog network operators.

3. How it Affect The Mobile Computing

3.1. Public telecomunications switching network

3.1.1. Mobile telecomunications switching office

3.1.1.1. Base transceiver station

3.2. These networks are used for more than just entertainment and phone calls

4. How Does Cellular Networks works

4.1. -A mobile network is composed of a web of base stations, each covering a delimited area (cell) and routing communications in the form of radio waves to and from users’ terminals

5. Future Recommendation

5.1. Mobile device that can support 5G