LTE- the emerging wireless technology

Mobile Technology -History

1G - Analog mobiles - (1980)

• NMT
• AMPS
• TACS

2G – Digital Mobiles -( 1991)

• GSM
• PDC
• iDEN
• GPRS (2.5G)
• EDGE (2.75G)

3G - (2000)

• UMTS(W-CDMA)
• CDMA2000
• WiMAX
• UMTS(HSxPA)-3.5G
• UMTS(HSPA+)-3.75G

4G -(Beyond 3G) – 2015(expected to reach the commerial market)

• Flash-OFDM
• 3GPP-LTE

3GPP LTE (Long Term Evolution) :

• 4th generation (4G) mobile broadband standard and is aimed to be the successor to the 3G technologies GSM/UMTS.
• It is currently in development and is considered the competitor to WiMAX.
• Downlink Capacity: Instantaneous data rate of 100Mbps in 20Mhz
• Uplink Capacity: Instantaneous data rate of 50Mbps in 20Mhz
• User throughput: 4-5 times HSDPA, 2-3 times HSUPA
• Frequency Band : Existing and new bands(~2GHz)
• Legacy supported : GSM / GPRS / EGPRS / UMTS / HSPA

System Architecture Evolution ( SAE) :

the core network architecture of 3GPP's future LTE wireless communication standard.SAE is the evolution of the GPRS Core Network, with some differences:

• simplified architecture
• All IP Network (AIPN)
• support for higher throughput and lower latency radio access networks (RANs)
• support for multiple, heterogeneous RANs, including legacy systems as GPRS, but also non-3GPP systems (say WiMAX)
• mobility between heterogeneous RANs, including legacy systems as GPRS, but also non-3GPP systems (say WiMAX)

EPS (Evolved Packet System)

comprises E-UTRAN (Evolved UTRAN) on the access side and EPC (Evolved Packet Core) on the core side.


References:

[1]. 3GPP TS 23.401: "Technical Specification Group Services and System Aspects; GPRS enhancements for E-UTRAN access".
[2].3GPP TS 36.300: "Evolved Universal Terrestrial Radio Access (E-UTRA) and Evolved Universal Terrestrial Radio Access (E-UTRAN); Overall description; Stage 2".
[3]. 3GPP TS 36.410: “S1 General Aspects and Principles”.
[4].3GPP TS 36.413: "Evolved Universal Terrestrial Access (E-UTRA) ; S1 Application Protocol (S1AP)".
[5]. 3GPP TR 21.905: "Vocabulary for 3GPP Specifications".
[6]. 3GPP TS 36.401: “E-UTRAN Architecture Description”.
[7]. 3GPP TR 29.803: “3GPP EPS : CT WG4 Aspects”
[8]. 3GPP TS 24.301: “NAS protocol for Evolved Packet System”
[9]. 3GPP TS 33.102: “3G Security: Security Architecture”
[10]. 3GPP TS 29.272: “MME and SGSN related interfaces based on Diameter Protocol”
[11].3GPP TS 35.201: “Specification of the 3GPP confidentiality and integrity algorithms f8 and f9”
[12].3GPP TS 35.205: ”Specification of MILENAGE algorithm set: Key generation functions f1,f1*,f2,f3,f4,f5 and f5*”
[13].3GPP TS 35.206: “Specification of the MILENAGE Algorithm Set”