tokens: ['This', 'solution', 'addresses', 'the', 'key', 'issue', '', 'relation', 'between', 'certificate', 'management', 'lifecycle', 'and', 'NF', 'management', 'lifecycle', 'As', 'stated', 'in', 'the', 'key', 'issue', 'details', 'NF', 'lifecycle', 'management', 'LCM', 'and', 'certificate', 'LCM', 'have', 'some', 'relations', 'that', 'need', 'to', 'be', 'considered', 'in', 'the', 'certificate', 'management', 'mechanism', 'Since', 'it', 'is', 'better', 'to', 'keep', 'certificate', 'and', 'registration', 'authorities', 'CARA', 'as', 'plain', 'as', 'possible', 'for', 'easy', 'deployments', 'as', 'well', 'as', 'for', 'performance', 'reasons', 'this', 'solution', 'introduces', 'a', 'new', 'network', 'entity', 'called', 'as', 'Certificate', 'Management', 'Network', 'Entity', 'CMNE', 'that', 'is', 'similar', 'to', 'the', 'certificate', 'management', 'function', 'introduced', 'in', '', 'being', 'responsible', 'for', 'the', 'synchronization', 'of', 'the', 'VNF', 'LCM', 'with', 'the', 'certificate', 'LCM', 'events', 'The', 'CMNE', 'is', 'responsible', 'for', 'the', 'synchronization', 'between', 'certificate', 'related', 'events', 'and', 'NF', 'related', 'events', 'To', 'achieve', 'this', 'role', 'successfully', 'the', 'CMNE', 'communicates', 'with', 'the', 'CARA', 'and', 'NRF', 'To', 'have', 'a', 'finegrained', 'control', 'on', 'both', 'the', 'certificate', 'lifecycle', 'related', 'events', 'and', 'VNF']