In 1985, Europe emerges in the first generation (1G) after adapting the system AMPS (Advanced Mobile Phone System) to the European requirements, and be baptized as TACS (Total Access Communications System). TACS encompasses all analogue mobile communications technology. Can not transmit voice data. This technology is now obsolete and is expected to disappear in the near future.
Due to the simplicity and limitations of first generation, there is GSM (Global System for Mobile Communications) which marks the beginning of the second generation (2G). Its main feature is the ability to transmit data in addition to voice, at a rate of 9.6 kbit / s. Which has allowed the identification of the famous and successful system of short messages (SMS).
In 2001 comes the so-called second generation and a half (2.5G) in the United States and Europe as a stepping stone to 3G. Included in this generation technologies that allow greater data transmission capacity and raised as a preliminary step towards 3G. The most notable of this generation is the GPRS (General Packet Radio System), able to coexist with GSM carrier to offer more efficient service for access to IP networks as the Internet. The maximum speed of GPRS is 171.2 kbit / s but in practice usually does not go from 40 kbit / s downstream and 9.6 kbit / s upload.
He later emerged as the 3G technology. The technologies of third generation (3G) are ranked within the IMT-2000 (International Mobile Telecommunications-2000) of the ITU (International Telecommunication Union), which set the standard for all 3G networks are compatible with each other.
The services offered by 3G technology are basically: internet access, broadband services, international roaming and interoperability. But basically, these systems allow the development of multimedia environments for the transmission of video and images in real time, encouraging the emergence of new applications and services such as videoconferencing or e-commerce with a maximum speed of 2 Mbit / s in optimal conditions, as for example in the internal environment of buildings.
- swing 48 News Huntsville
jurors were emotional in the video Christie Scott process in Russellville. " An interview is reproduced with a State Fire Marshal investigator. " Scott is seen screaming and yelling for her husband. - Major League Baseball
Streaming video is now part of AT Bat - NBC 12 Richmond
LOS ANGELES ( AP) - The Emmy Awards will be postponed by one week to avoid disposal in MTV's Video Music Awards on September 13. CBS and the Television Academy said Wednesday that the 61st Primetime Emmys were presented Sept. 20 instead. - Investor's Business Daily via Yahoo! News
Video killed the radio star, as the old song goes. Now online video can make a killing in network gear makers in the coming years.
Recent Comments