Patent ID: 9596644
Date: 2017-03-14
CPC Classifications: H04W,Y02D

Claim:
1. An apparatus comprising: at least one processor; and at least one non-transitory memory including computer program code, in which the at least one non-transitory memory and the computer program code are configured, with the at least one processor and in response to execution of the computer program code, to cause the apparatus to at least: trigger a small cell to transmit a sequence on a second frequency band using a triggering command that indicates a time to transmit the sequence; on a first frequency band, trigger at least one user equipment to detect the sequence on the second frequency band with a first indication of when the sequence will be transmitted; and from a second indication received on the first frequency band from the at least one user equipment in response to the triggering of the at least one user equipment, determine whether the at least one user equipment is located proximate to the small cell; wherein the triggering command is transmitted via an X2 interface, the sequence is a cell-common sequence or a cluster-common sequence, the apparatus comprises a macro access node or one or more components thereof, and the small cell is a local area access node.