The Location Based Service is growing rapidly nowadays due to the universalization of the use for smartphone, and therefore the location determination technology has been placed in a very important position. this study suggests an algorithm that can provide the estimate of users' location by using smartphone sensors. And in doing so we will propose a methodology for the creation and update of indoor map though the more accurate position estimation using smartphone sensors such as acceleration sensor, gyroscope sensor, geomagnetic sensor and rotation sensor.

Abstract
 1. 서론
 2. 이론적 배경
  2.1 위치 추정
  2.2 스마트폰 센서
  2.3 PDR
  2.4 INS
  2.5 Data Cleaning Algorithm
 3. 본론
  3.1 위치 추정 단계
  3.2 사용사 행동 패턴 분석
  3.3 측위 방법론 알고리즘
  3.4 보행 검출 단계
  3.5 방향 추정 단계
 4. 결론 및 향후 연구 과제
 5. 참고문헌

• 전 욱(인하대학교 산업경영공학과) | Yu Quan (Department of Industrial Engineering, INHA University)
• 이창호(인하대학교 산업경영공학과) | Chang-Ho Lee (Department of Industrial Engineering, INHA University) Corresponding Author