Patent ID: 10034296

Abstract:
Identifying a interfering, candidate or suspect of interfering (interferer) user device, UE, being served by a first base station (macro eNB) and causing uplink interference on a second base station (small cell). The first base station (macro eNB) transmits uplink channel configuration information (PRACH configuration info) to the second base station (small cell). The first base station (macro eNB) receives an Interference indication message, comprising an indication that a cell of the second base station (small cell) is experiencing uplink interference form at least one user device. For each of a plurality of user devices being served by the first base station (macro eNB), the first base station (macro eNB), assigns a preamble to the user device, UE, and transmits the assigned preamble to the user device, UE. The first base station (macro eNB) also transmits the assigned preambles to the second base station (small cell). The first base station (macro eNB) then receives a list of preambles detected at the second base station, and identifies the at least one interfering user device, UE, based on the received list.