Short-form for generations of wireless technologies:
- 2G stands for second generation primarily meaning GSM only;
- 2.5G primarily means GSM and GPRS;
- 2.75G was used to refer to EDGE (Enhanced Data Rates for GSM Evolution) Networks;
- 3G means third generation (W-CDMA) technology;
- 4G includes the Mobile WiMAX, and the first-release Long-Term Evolution (LTE) standards.
What 5G will consist of is not yet clearly established, and it is unlikley to be deployed before the 2020s. The EU is sponsoring projects to better define and develop 5G including METIS, 5GNOW, iJOIN, TROPIC, Mobile Cloud Networking, COMBO, MOTO and PHYLAWS.