High Speed Packet Access.

Explain High Speed Packet Access.

- HSPA is a combination of 2 mobile telephony protocols – High Speed Downlink Packet Access and High Speed Uplink Packet Access
- HSPA improves the performance of existing WCDMA protocols.
- HSPA provide increased performance by utilizing schemes of modulation and refining the protocols, through which the base stations and handsets communicate
- HSPA is used for better usage of the available bandwidth provided by WCDMA
- HSPA supports data rates of up to 14 MBit / s in the downlink
- HSPA supports data rates of up to 5.8 MBit / s in the uplink
- HSPA reduces the latency and increases up to 5 times more system capacity during downlink and twice more system capacity during uplink
- HSPA uses 16QAM for yielding higher bit rates
- HSPA rollouts are achieved by implementing software upgrades to existing 3G networks. This gives HSPA a head start over WiMax.
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