최근 다양한 형태의 스마트 기기 출현과 대중적 보급으로 고속 데이터 전송에 대한 수요가 나날이 증가하고 있어 소형셀 기술에 대한 이동통신 사업자들의 관심이 높다. 이에 데이터 요구량이 많은 위치에 소형 셀을 다층으로 밀집 배치하고 매크로 기지국 및 소형 셀 기지국의 밀접한 협력을 통해 무선 네트워크의 용량을 증가시키기 위한 기술들에 대한 요구가 높아지고 있다. 매크로 셀과 소형 셀이 다층으로 배치된 구조에서 고려해 볼 수 있는 요소기술들은 단말의 다중 노드 연결,효율적인 이동성 보장, 효율적인 셀/이동단말 발견, 이종 듀플렉스캐리어 집성, 셀 간 간섭 관리 등이며, 본 논문에서는 이들을 기반으로 최근 3GPP에서 활발히 논의되고 있는 LTE 소형셀 향상 표준화 동향에 대해 기술한다.
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