Radio Interface Evolution

Tiborlee

GSM & UMTS Evolution: From 2G to 4G
In the same way as GSM, UMTS is undergoing a permanent evolutionary process.
Step by step different aspects of the system such as services, network architecture
and the radio interface are enhanced and additional options are integrated. This
process should be continued towards 4G and beyond.

Milestones of the GSM & UMTS Evolution:
1990/91: GSM Phase 1 (GSM900/1800) with Tele-, Bearer- & some Supplementary
Services
1994: GSM Phase 2 with full set of Supplementary Services, Half Rate speech,..
1996: ETSI GMM Report ‘96: Compatibility between UMTS & GSM; Evolution of
GSM towards UMTS to reduce costs & risks of UMTS implementation
1997- 99: GSM Phase 2+ Annual Releases ’96, ’97, ’98 & ’99: PS Core Network
(GPRS), enhanced Service Concept (VHE, CAMEL, MExE, STK, OSA), higher data
rates (HSCSD, GPRS & EDGE), enhanced speech codecs (EFR & AMR), MMS,…
1999/2000: UMTS Rel. ’99: UMTS on basis of GSM ’99 CN & Service Concept +
UTRAN & WCDMA Air Interface (FDD & TDD Mode)
2002: UMTS Rel. 4: “ATM”-CN, LCR-TDD Mode
2002/03: UMTS Rel. 5: IP Multimedia Subsystem IMS, HSDPA for enhanced data
rates,..
2005: UMTS Rel. 6: Enhanced IMS support, new Services (MBMS, PoC), enhanced
data rates: HSUPA & WLAN Integration,..
2006/07: UMTS Rel. 7: Enhanced antenna concepts & data rates: MIMO; 7.68 Mcps
TDD,..
2010–15?: 4G Pure IP Core Network and Radio Access Network

【文件名】:08118@52RD_無線接口演進.pdf
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