Apparatus and method for performing handover in a communication system

摘要

A handover apparatus and method in a communication system having a macro BS and a plurality of micro BSs in one cell are provided. A handover apparatus includes a macro BS for generating a plurality of messages, each messages respectively corresponds to one of a plurality of group areas defined by grouping service areas of the micro BSs and includes information about BSs to which MSs of the group area can perform handover. The macro BS also generates group area information indicating locations of the group areas, broadcasts the plurality of messages and the group area information to the cell, and manages handover of MSs based on the plurality of messages and the group area information.

主权项

1. A handover method of a macro Base Station (BS) in a communication system, the method comprising:
determining a plurality of group areas by grouping service areas of a plurality of micro BSs in a cell; generating a plurality of messages, wherein each of the plurality of messages relates to respective group areas and includes information about at least one micro BS belonging to the respective group areas to which Mobile Stations (MSs) of the respective group areas can perform handover; generating group area information indicating locations of the respective group areas or reference signals being used for estimating a location of the respective group areas based on whether a related MS is capable of estimating its location; transmitting the plurality of messages and the group area information or the reference signals to the cell; and managing handover of the MSs based on the plurality of messages, wherein the reference signals are sequences by beamforming in a direction to the respective group areas.