In the disclosure, “first frequency resource” refers to at least part of a frequency resource owned or managed by a first mobile communication provider. “second frequency resource” refers to at least part of a frequency resource owned or managed by a second mobile communication provider.
In the disclosure, a “mobile communication provider” refers to a service provider who owns or manages a network and provides a communication service to UEs. For example, the mobile communication provider may refer to a mobile virtual network operator (MNO) or a mobile virtual network operator (MVNO). However, the mobile communication provider is not limited to the MNO or the MVNO and may refer to any subject who can own or manage a frequency resource.
In the disclosure, “synchronization information” of a base station refers to information required for a UE to be synchronized with the base station. The synchronization information may include at least one of a cell ID, a cell ID group, or frame timing.
Before explaining methods for a base station to communicate with a UE using a resource of another base station according to embodiments of the disclosure, frame structures of an LTE system and an LTE-A system to which the disclosure is applicable will be described.