Logical OM
Logical OM (Operations and Maintenance) is the signalling associated with the control of logical resources (channels, cells,) owned by the RNC (Radio Network Controller) but physically implemented in the Node B. The RNC controls these logical resources. A number of OM procedures physically implemented in Node B impact on the logical resources and therefore require an information exchange between RNC and Node B. All messages needed to support this information exchange are classified as Logical OM forming an integral part of NBAP (Node B Application Part).