tokens: ['The', 'purpose', 'of', 'the', 'HNB', 'Registration', 'Procedure', 'is', 'to', 'register', 'the', 'HNB', 'with', 'the', 'HNBGW', 'to', 'enable', 'the', 'HNBGW', 'to', 'provide', 'service', 'and', 'core', 'network', 'connectivity', 'for', 'the', 'HNB', 'This', 'procedure', 'shall', 'be', 'the', 'first', 'HNBAP', 'procedure', 'triggered', 'after', 'the', 'SCTP', 'association', 'has', 'become', 'operational', 'The', 'deregistration', 'procedure', 'may', 'be', 'originated', 'by', 'either', 'HNB', 'or', 'HNB', 'GW', 'Performance', 'Measurement', 'definitions', 'in', 'this', 'subclause', 'are', 'based', 'on', 'PGG', 'TS', '', '', 'The', 'following', 'paragraphs', 'are', 'of', 'interest', 'for', 'this', 'purpose', '', 'HNB', 'REGISTER', 'REQUEST', '', 'HNB', 'REGISTER', 'ACCEPT', '', 'HNB', 'REGISTER', 'REJECT', '', 'HNB', 'DEREGISTER', 'These', 'paragraphs', 'show', 'in', 'particular', 'the', 'following', 'diagrams', 'Figure', '', 'HNB', 'Register', 'Procedure', 'Successful', 'Operation', 'Figure', '', 'HNB', 'Register', 'Procedure', 'UnSuccessful', 'Operation', 'Figure', '', 'HNB', 'Deregister', 'Procedure', 'HNB', 'GW', 'Originated', 'Successful', 'Operation']