Network Architectures for Evolving 3G LTE and Mobile WiMAX
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All-IP networking is the ultimate goal of 4G mobile networks, but 3G LTE and mobile WiMAX systems have designed semi all-IP network architectures due to their effectiveness in radio resource and mobility management. These semi all-IP networks separate layer 2 and layer 3 handoff operations by grouping many base stations (BSs) as a subnet, thus alleviating the handoff problem, while the pure all-IP networks provide a simple network platform at the cost of high handoff overhead. In this article, we compare the semi all-IP networks to the pure all-IP networks, and provide an overview to WiMAX access service networks and 3G LTE backhaul networks. We then illustrate advanced architectures for QoS provisioning: IP multimedia subsystems (IMS) and policy based management (PBM).
Abstract
All-IP networking is the ultimate goal of 4G mobile networks, but 3G LTE and mobile WiMAX systems have designed semi all-IP network architectures due to their effectiveness in radio resource and mobility management. These semi all-IP networks separate layer 2 and layer 3 handoff operations by grouping many base stations (BSs) as a subnet, thus alleviating the handoff problem, while the pure all-IP networks provide a simple network platform at the cost of high handoff overhead. In this article, we compare the semi all-IP networks to the pure all-IP networks, and provide an overview to WiMAX access service networks and 3G LTE backhaul networks. We then illustrate advanced architectures for QoS provisioning: IP multimedia subsystems (IMS) and policy based management (PBM).
참고문헌 (13)
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