Networking

Assignment 1

1G (or 1-G) refers to the first-generation of wireless telephone technology, mobile telecommunications. These are the analog telecommunications standards that were introduced in the 1980s and continued until being replaced by 2G digital telecommunications. The main difference between two succeeding mobile telephone systems, 1G and 2G, is that the radio signals that 1G networks use are analog, while 2G networks are digital.

Although both systems use digital signaling to connect the radio towers which listen to the handsets to the rest of the telephone system, the voice itself during a call is encoded to digital signals in 2G whereas 1G is only modulated to higher frequency, typically 150 MHz and up.

One such standard is NMT (Nordic Mobile Telephone), used in Nordic countries, Switzerland, Netherlands, Eastern Europe and Russia. Others include AMPS (Advanced Mobile Phone System used in the North America and Australia, TACS (Total Access Communications System in the United Kingdom, C-450 in West Germany, Portugal and South Africa, Radiocom 2000 in France, and RTMI in Italy. In Japan there were multiple systems. Three standards, TZ-801, TZ-802, and TZ-803 were developed by NTT, while a competing system operated by DDI used the JTACS (Japan Total Access Communications System standard.

1G speed vary between that of a 28k modem28kbit/s and 56k modem 56kbit/s, meaning actual download speeds of 2.9KBytes/s to 5.6KBytes/s.

Antecedent to 1G technology is the mobile radio telephone, or 0G.

Benefits of 1G

Network Standardization

1G mobile phones used a single, universal network standard, known as the Advanced Mobile Phone System (AMPS). Introduced in 1976, this analog network saw adoption around the world and brought different cell phone service providers together under a single network, allowing for shared cost of network development and maintenance.Earlier cell phone networks, mostly intended for industrial, military and research applications, used a...