Low overhead mobility in local area wireless network

摘要

In a heterogeneous network, enhanced handover and reestablishment procedures are proposed within a local area network. The enhanced procedures are more efficient, e.g., with less signaling and less data interruption than the legacy mobility mechanism. In a local area network, a UE is served by an anchor eNB in macro cell layer and one or more drift eNBs in small cell layer. When the UE moves within the local area network, the UE anchor does not need to change. For cell change within the same anchor, the enhanced procedures reduces signaling overhead and data interruption time.

主权项

1. A method, comprising:
establishing a radio resource control (RRC) connection by a user equipment (UE) with an anchor base station (eNB) in a mobile communication network, wherein the UE is also served by a source drift eNB; receiving measurement configuration from the anchor eNB or from the source drift eNB, wherein the measurement configuration controls UE measurements and reporting frequency; and transmitting a measurement report to trigger a cell change within the same anchor if a cell change condition is satisfied, wherein the measurement report indicates or comprises a request for changing a source small cell served by the source drift eNB to a target small cell served by a target drift eNB, and wherein after the cell change the UE is connected with the anchor base station and the target drift eNB.