As the penetration and use of packet-data services increases and new services are introduced, end-users will require higher data rates and improved quality of service (QoS). Operators will also require more capacity in their systems.
WCDMA 3GPP Release 99 provides data rates of 384 kbps for wide area coverage and up to 2 Mbps for hot-spot areas, which is sufficient for most existing packet-data applications. WCDMA 3GPP Release 5 extends the specification with HSDPA.
The term “WCDMA Evolved” describes the evolution of WCDMA addressing both operators need for efficiency and end-users demand for enhanced experience and simplicity. While the introductory phase is passed, end-user experience and enhanced system throughput is the focus of the first step of WCDMA Evolved i.e. HSDPA – High Speed Downlink Packet Access. Later, features to further enhance the uplink with improved coverage for high data rates, improved uplink capacity and reduced uplink delay will be part of the second step within WCDMA Evolved. Possible future steps are currently discussed and investigated within 3GPP.
Contents:-
1. Introduction
2. WCDMA Evolved
3. The concept of HSDPA
4. Operators and end-users will benefit from the introduction of HSDPA
WCDMA 3GPP Release 99 provides data rates of 384 kbps for wide area coverage and up to 2 Mbps for hot-spot areas, which is sufficient for most existing packet-data applications. WCDMA 3GPP Release 5 extends the specification with HSDPA.
The term “WCDMA Evolved” describes the evolution of WCDMA addressing both operators need for efficiency and end-users demand for enhanced experience and simplicity. While the introductory phase is passed, end-user experience and enhanced system throughput is the focus of the first step of WCDMA Evolved i.e. HSDPA – High Speed Downlink Packet Access. Later, features to further enhance the uplink with improved coverage for high data rates, improved uplink capacity and reduced uplink delay will be part of the second step within WCDMA Evolved. Possible future steps are currently discussed and investigated within 3GPP.
Contents:-
1. Introduction
2. WCDMA Evolved
3. The concept of HSDPA
- Higher-order modulation
- Short TTI
- Fast link adaptation
- Fast scheduling
- Fast hybrid ARQ
4. Operators and end-users will benefit from the introduction of HSDPA
- Improved end-user experience
- Improved system capacity
- Integral part of WCDMA
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