cdma 2000
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1. CDMA20001X RTT/EVDO/EVDV 2. Roteiro Vocabulário – Histórico - Introdução Requisitos ITU-T / IMT-2000 Caracteristicas do modelo CDMA 2000 Evolução Mercado Aparelhos Concorrência
3. Vocabulário “ Sopa de Letrinhas” IMT2000 ( International Mobile Telecommunications-2000) ITU-T (International Telecommunication Union – Telecommunication) CDMA (Code Division Multiple Access) CDG (CDMA Development Group) 1x RTT (Radio Transmission Telecommunications) 1x EVDO (Evolution Data Only) 1x EVDV (Evolution Data and Voice) 3Gpp2 (3rd Generation Partnership Project 2) Wlans (Wireless Local Area Network) Wwan (Wireless Wide Area Network)
4. Histórico Telecomunicações móveis Nova Econômia Global Grandes Corporações Negócios/Mercados Usuários móveis
5. cdmaOne cdmaOne (TIA/EIA-95-A/B); Modulação: Spread spectrum (forward/reverse links) Usando sequência de distribuição direta Largura de Banda de 1.25Mhz Reuso de 1. Soft handoff; Baixa taxas de dados (14.4 kbps-A / 64 Kbps-B) – RLP (radio link potocol) baseado “melhor esforço”; Canal piloto.
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7. IMT-2000 International Mobile Telecommunications-2000 (IMT-2000) is the global standard for third generation (3G) wireless communications, defined by a set of interdependent ITU Recommendations. IMT-2000 provides a framework for worldwide wireless access by linking the diverse systems of terrestrial and/or satellite based networks. It will exploit the potential synergy between digital mobile telecommunications technologies and systems for fixed and mobile wireless access systems. ITU activities on IMT-2000 comprise international standardization, including frequency spectrum and technical specifications for radio and network components, tariffs and billing, technical assistance and studies on regulatory and policy aspects.
8. Requisitos 3G (IMT-2000) 2 Mbps para locais fixos; 384 kbps para usuários pedestres; 144 kbps para usuários móveis; Coberturas de pico/micro/macro células sem perda de sinal, suportando várias densidades