In a typical scenario, the eNodeBs operate relatively independently and control the radio resources of their respective cells. Each eNodeB aims to optimize its performance and tries to provide promised QoS to the users in its cells.
Such distributed control of resources makes the network scalable and reduces the overall signaling delays and decision-making delays. However, it is possible to enhance the performance of the overall network via collaboration.
In a Collaboration scenario, eNodeBs in a given neighborhood exchange information about utilization of radio resources and users so that resources can be allocated to optimize the overall network performance.
Example: Areas that can benefit significantly from collaboration include ICIC, CoMP, dual connectivity and eMBMS.