20-12-2014, 07:12 PM
I need data rates of each cellular technology
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advantages and disadvantages of 1g 2g 3g 4g 5g technology
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I need data rates of each cellular technology
13-03-2017, 02:32 PM
1G (or 1G) refers to the first generation of wireless telephony (mobile telecommunications) technology. These are the analog telecom standards that were introduced in the 1980s and continued to be replaced by 2G digital telecommunications. The main difference between the two mobile phone systems (1G and 2G) is that the radio signals used by 1G networks are analog, while 2G networks are digital. Although both systems use digital signals to connect the radio towers (listening to telephones) to the rest of the telephone system, the voice itself during a call is coded to 2G digital signals, whereas 1G is only modulated at a higher frequency, Typically 150 MHz and more. The inherent advantages of digital over analog technology meant that 2G networks eventually replaced them almost everywhere.
2G (or 2-G) is the abbreviation of second generation wireless telephony technology. Second generation 2G cellular telecommunications networks were commercially launched by Radiolinja (now part of Elisa Oyj) in Finland by the GSM standard in 1991. Three main benefits of 2G networks over their predecessors were that telephone conversations were digitally encrypted; 2G systems were significantly more efficient in the spectrum allowing much higher penetration levels of mobile telephony; And 2G introduced mobile data services, starting with SMS text messages. 2G technologies allowed the various mobile telephone networks to provide services such as text messages, picture messages and MMS (multimedia messages). All text messages sent over 2G are digitally encrypted, allowing the transfer of data in such a way that only the receiving recipient can receive and read it.
3G The third generation of wireless mobile telecommunications technology is the third generation of 3G. This is based on a set of standards used for mobile services and mobile telecommunication services networks that meet the specifications of the International Telecommunication Union's International Mobile Telecommunications 2000 (IMT-2000). 3G finds application in wireless mobile telephony, mobile Internet access, wireless Internet access, video calls and mobile TV. 3G telecommunications networks provide support services that provide an information transfer rate of at least 200 kbit / s. The latest 3G versions, often referred to as 3.5G and 3.75G, also provide multi-Mbit / s mobile broadband access to smartphones and mobile modems on laptops. This ensures that it can be applied to wireless voice telephony, mobile Internet access, wireless Internet access, video calls and mobile TV technologies.
4G is the fourth generation of wireless mobile telecommunications technology, succeeding 3G. A 4G system must provide ITU-defined capabilities in IMT Advanced. Potential and current applications include modified mobile web access, IP telephony, gaming services, high definition mobile TV, video conferencing and 3D television. The long-running launch standard (LTE) (a 4G candidate system) has been commercially deployed in Oslo, Norway, and Stockholm, Sweden since 2009. However, it has been debated whether the first version versions should be considered 4G.
5th generation mobile networks or 5th generation wireless systems, abbreviated 5G, are the next proposed telecommunications standards beyond the current 4G / IMT-Advanced standards. An initial chip design by Qualcomm in October 2016, the Snapdragon X50 5G modem supports operations on the 28 GHz, also known as millimeter wave spectrum (mmW). With 800 MHz bandwidth support, it is designed to support maximum download speeds of up to 35.46 gigabits per second. The 5G planning aims at greater capacity than the current 4G, which allows a higher density of mobile broadband users and device support to ultra reliable device and massive communications machine. 5G research and development also aims at lower 4G computer latency and lower battery consumption, for better Internet application of things.
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