SDN Controller Automates Cloud RAN Resource Management
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current cloud radio access network (Cloud RAN) systems face challenges in efficiently managing network resources and optimizing signal transmission rates, leading to suboptimal performance and potential security vulnerabilities due to manual operation and lack of automated resource management.
Innovation Solution
A Cloud RAN system architecture that includes a software-defined network (SDN) controller, remote signal sources, a baseband processing unit pool, an access management server, and network signal forwarders, which automatically detect and manage connections, update network resource information, and adjust transmission rates based on authentication and access signals, thereby reducing manual intervention and enhancing security.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If manual operation is used for network resource management, then system complexity is reduced, but network resource management efficiency deteriorates and security vulnerabilities increase
Solution Approach 1:
The patent introduces an SDN controller as an intermediary component that automatically manages network resources. The controller receives access signals from remote signal sources, determines connection relationships with baseband processing units, and automatically updates network resource information in signal forwarders. This intermediary automates the resource management process, improving efficiency while maintaining manageable system complexity through centralized control.
Solution Approach 2:
The system implements automated self-service mechanisms where the SDN controller autonomously performs network resource management tasks. When an access signal is received, the controller automatically determines connection relationships, updates network resource information, and adjusts transmission rates without requiring manual intervention. This self-service capability improves management efficiency and reduces security vulnerabilities associated with manual operations.
2Reliability
If transmission rate is increased to improve signal quality, then signal transmission quality is improved, but network security deteriorates due to potential packet attacks
Solution Approach 1:
The patent implements preliminary authentication and connection relationship determination before establishing high-rate transmission. The SDN controller first receives the access signal, determines the connection relationship between the remote signal source and baseband processing unit, and updates network resource information with authorized transmission parameters. This preliminary action ensures that only authenticated connections receive high transmission rates, improving signal quality while preventing unauthorized packet attacks.
Solution Approach 2:
The system employs feedback mechanisms where the SDN controller continuously monitors network resource information and transmission rates. Based on the determined connection relationships and access states, the controller dynamically adjusts transmission rates and provides feedback to signal forwarders. This feedback loop ensures that high transmission rates are granted only to legitimate connections, maintaining signal quality while enhancing security against packet attacks.
Data Source
AI summary
A cloud radio access network system includes remote signal sources, a baseband processing unit pool, an access management server, a software defined network controller and a network signal forwarder. The software defined network controller is electrically connected to the access management server and the network signal forwarder. The network signal forwarder includes at least two network connectors, each of which is configured to be connected to one remote signal source or the baseband processing unit pool. The software defined network controller obtains connection relation between the network connectors and the remote signal sources or the baseband processing unit pool, and provides network resource information to the network signal forwarder according to the connection relation. The network signal forwarder establishes communication between one remote signal source and the baseband processing unit pool according to the network resource information.