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IP-based mobile communication system is one of the key research items in the mobile networks for a long time. But, due to some technical issues and no need of markets, it is still not full-fledged. Recently, CDMA and WCDMA service providers want to introduce IP-based network connectivity. Even though their efforts, the main network infra-structure depends on ATM or HDLC technology. This article describes a good example of commercialization of IP-based mobile communication systems. Our research is not experimental system but a in-service system – replacing the existing equipments with new IP-based systems. In this paper, we introduce IP related technologies used in our research such as IP-based ATCA(Advanced Telecommunications Computing Architecture) platform, HA(High Availability) redundancy, IP multicast, network redundancy techniques, multi-link bundling and IP header compression. These are already well-known to internet domain. We mix them with mobile communication systems concretely.
목차
Abstract I. 서론 II. IP 기반 시스템의 도입 시나리오 1. 핵심 망 + BSC(1단계) 2. IP 기지국 도입(2단계) III. IP 기반 이동통신 시스템 관련 기술 1. ATCA 플랫폼 기술 2. HA 이중화 3. IP Multicast 4. 네트워크 이중화 5. Multi-link Bundling 6. IP Header Compression IV. 결론 참고문헌