Date Added: Mar 2010
In 3GPP Rel'8 access to a Home eNodeB may be restricted to only UEs belonging to a Closed Subscriber Group (CSG). These cells are called CSG cells and a UE with CSG subscription would have an Allowed CSG List containing CSG Identities associated with the CSG cells on which the UE is allowed access. This however, can be problematic for the users located near the CSG cells, but who are not allowed to access them. The interference caused by the CSG cell can be devastating if the UE is connected to a macro cell using the same frequency.