关键词: 网络5.0, 业务网, 网络架构, Underlay+Overlay协同

Abstract:

With the rapid emergence of new businesses like the Internet of Things and the Industrial Internet, networks face significant challenges in determinism, security, and resource allocation. Existing networks operate under a “best-effort” model, managing network resources without controlling service or application connections. Network 5.0 addresses these problems by proposing solutions such as innovative protocols, deterministic networks, intrinsic security and trust, self-organizing networks, and computational networks. Besides, Network 5.0 needs to resolve the Over-The-Top (OTT) problem, namely, the insufficiency in controlling and matching applications and network layers for current business support. Thus, this paper analyzes four motivations for Network 5.0 service networks. Subsequently, it presents the service network architecture by overlaying a service core layer onto the existing network transport layer, enabling dynamic service perception, connections, resource matching, and connection control capabilities. This inherently resolves the deterministic support Underlay+Overlay coordination of application. Finally, it highlights two typical scenarios, namely, supercomputing and uninterrupted live broadcasting. These serve as robust indicators for future directions in network research.

Key words: Network 5.0, service network, network architecture, Underlay+Overlay coordination