Cellular Half "G"'s 2.5G, 3.5G, 4.5GAlan Spicer Marine Telecom Blog | Alan Spicer Marine Telecom Blog
Cellular Generations and some of the Half-G's Cellular has had "Generations" as markers of the technology for a long time now. They are unofficial milestones in cellular development. To be more official you need to look into 3GPP and the Release versions as well as User Catagories for speeds. 2G had 2.5G with Higher Data Rates, GPRS, and Edge. I remember setting up serial modem connections where it acted like a landline dial up connection. 3G had 3.5G with Higher Download Speed (HSDPA) before Higher Upload Speed was added with HSUPA. Finally being called just HSPA - High Speed Packet Access. I remember cellular routers having just HSUPA and then finally they came out with HSDPA, like I said which just became HSPA. 4G also now has 4.5G - which is LTE Advanced Pro. 4G LTE being Long Term Evolution. The system was already digital ... the core became all packet switched instead of having circuit switched as in 3G and 2G. 4.5G advances 4G LTE a lot. At first LTE Advanced, and now