I thought others might like to know a definition that works for me. A system is a procedure, process, method, or course of action designed to achieve a specific result. Its component parts and interrelated steps work together for the good of the whole.
Thank you all, for the answers. Still one nagging question, though: NOt stated by T-Mobile on the 4G LTE Overview page is its use of the 1900 MHz frequency. As mentioned in the 4G Overview Additional Info, T-Mobile is switching some 1900 MHz frequency from EDGE to HSPA+.This will allow devices that work on 1900 MHz, such as AT&T devices, to use our 4G network..e: LTE Band # and Frequency. Don't let anyone else tell you otherwise, HSPA+ is an addition to the 3G standard to provide higher data rates than originally scheduled. What T-Mobile's doing is moving 3G/HSPA+ service off its 1700 MHz band and onto 1900MHz, where more phones support it globally.
For technical details on LTE and a list of its designated operating frequencies, bands, and roaming possibilities, see LTE frequency bands. Bands 33 to 44 are assigned to TDD-LTE.