At the same time LTE marks the transition from a circuit-switched to an all-IP network architecture enhanced with greatly improved QoS characteristics such as low packet transmission delays (smaller than 5 ms for small packets), fast and seamless handover from one cell to another supporting up to 350 km/h for high-speed vehicular communications scenarios, operation with different bandwidth allocations (scalable bandwidth up to and including 40 MHz, while operation in wider bandwidths, e.g., up to 100 MHz, is also possible).