Completed by 3GPP in February 2008, the LTE standards are designed to enable the rollout of high capacity mobile networks capable of delivering very high speed & low latency.
Designed to be backwards-compatible with GSM and HSPA, LTE incorporates Multiple In Multiple Out (MIMO) in combination with
Orthogonal Frequency Division Multiple Access (OFDMA) in the down-link and Single Carrier FDMA in the up-link to provide high levels of spectral efficiency and high data
3GPP has ensured compatibility with these existing widely-used technologies, enabling a smooth handover of voice calls and data sessions between 3GPP networks and building on the international roaming capabilities of GSM and HSPA today.
LTE delivers peak data throughput up to 173 Mbps in the down-link and 86 Mbps in up-link, an improvement over HSPA by a factor of over 10.
LTE efficiently delivers best user experience of broadband and smart device services due to increased data rates, reduced latency and scalable flat all-IP network architecture.
LTE offers a number of clearly identifiable benefits in comparison to other mobile technologies and these are:
- Significantly increased peak data rates.
- Reduced latency
- Scalable bandwidth
- Compatibility with earlier releases
- Reduced CAPEX/OPEX.
- Improved spectrum efficiency
Enhances the end-user experience – ensuring that real-time bandwidth-hungry applications such as interactive TV, VoIP and online gaming are available and delivered with an exceptionally high QoS
Evolved Node B (eNB) :
• Supports LTE radio interface
• Performs radio resource management
Serving Gateway (SGW):
• Takes care of routing/forwarding data packets
• Acts as the mobility anchor for the user plane
Mobility Management Entity (MME) :
• Manages user equipment mobility, identity and security parameters
Packet Data Network Gateway (PDN GW):
• Provides user equipment with connectivity to the external packet data network(s)
For more information, see: