For the existing HSDPA network already has an extension. HSPA evolution, HSPA + or evolved HSPA called in the English-speaking world, promises faster network access for traveling. HSPA evolution is an extension of the already known process of HSPA (high-speed packet access). Introduction, speeds are expected in the downstream 28 MB / second and 11 MBit / s in the uplink. HSPA evolution achieves these speeds through a better use of the available frequency space of the UMTS network.
HSPA is established in Austria evolution with these values based on Ericsson technology. Already 42 MBit per second were shown in a demonstration network in the vicinity of Stockholm. Supposedly an existing HSPA can be infrastructure via software update on this speed evolution. The increased speed is achieved by MIMO (multiple input, multiple output). It heitsst, it works only if the mobile device in range of at least two fixed points and antenna systems.
In this case, that joins Mobile device with two fixed points and transmits the data divided parallel to both. Doubling the transmission speed is accesible theoretically by the doubling of the connection. However, it remains to be seen how the system works in practice. Especially in areas of high network load – so there, where many users at the same time online – going evolution with HSPA could it be that this multiplication is achieved not up because simply not enough free benchmarks available. How can such a power load without construction of additional benchmarks balance only practice can show. Conclusion: With HSPA evolution is a similar to VDSL mobile solution based on the exist UMTS infrastructure conquer the market. Torsten Heinsius