상세정보
학술대회
Smooth Device Handover System for Seamless Audio Service
- 발행일
- 201109
- 출처
- International Conference on Convergence and Hybrid Information Technology (ICHIT) 2011 (LNCS 6935), v.6935, pp.175-182
- 협약과제
- 11VC1200, N-스크린 서비스를 위한 스마트 TV용 디바이스 협업 오픈 미들웨어 및 원격 사용자 인터페이스 기술 개발, 문경덕
- 초록
- Device handover based on user's movement without relying on an infrastructure enables various services in a localized personal area. We present an audio speaker handover system based on wireless distance estimation in a Bluetooth environment. It is designed to enable smooth device handover at walking speed without any help from the infrastructure. For smooth device handover, we studied the distance estimation method which satisfies a fast reaction and high resolution. We collected received signal strength indicator (RSSI) values and transmission power level (TPL) values and determined a relative distance using the model function obtained by statistical analysis method. With these methods, we experimented and analyzed the performance of device handover. Based on these experiments, we proposed a modified RSS based distance estimation that limit the transmission power control function. We also showed that the proposed system achieves good performance in the aspects of handover delay time and handover failure rate. © 2011 Springer-Verlag.
- KSP 제안 키워드
- Analysis method, Control functions, Delay Time, Distance Estimation Method, Failure Rate, Handover delay, Handover failure, High-resolution, Model function, Power Levels, Power control(PC)