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Intent-driven networks are an essential stepping stone in the evolution ofnetwork and service management towards a truly autonomous paradigm. Usercentric intents provide an abstracted means of impacting the design,provisioning, deployment and assurance of network infrastructure and serviceswith the help of service level agreements and minimum network capabilityexposure. The concept of Intent Based Networking (IBN) poses several challengesin terms of the contextual definition of intents, role of differentstakeholders, and a generalized architecture. In this review, we provide acomprehensive analysis of the state-of-the-art in IBN including the intentdescription models, intent lifecycle management, significance of IBN and ageneralized architectural framework along with challenges and prospects for IBNin future cellular networks. An analytical study is performed on the datacollected from relevant studies primarily focusing on the inter-working of IBNwith softwarized networking based on NFV/SDN infrastructures. Criticalfunctions required in the IBN management and service model design are exploredwith different abstract modeling techniques and a converged architecturalframework is proposed. The key findings include: (1) benefits and role of IBNin autonomous networking, (2) improvements needed to integrate intents asfundamental policies for service modeling and network management, (3) need forappropriate representation models for intents in domain agnostic abstractmanner, and (4) need to include learning as a fundamental function inautonomous networks. These observations provide the basis for in-depthinvestigation and standardization efforts for IBN as a fundamental networkmanagement paradigm in beyond 5G cellular networks.

Intent-driven autonomous network and service management in future cellular networks: A structured literature review