The recent wearable device’s applications concentrates on providing diverse services such as location based service, context aware service to the users. These various services are implemented by the interactions between the wearable device and the user. In the legacy system, the interaction requires certain explicit configuration from the user. If the user is unfamiliar with the IT technology, it will be impossible to get the wanted service. Therefore, a new autonomous communication concept among neighbor devices is essential for people who is unfamiliar with the IT technology. The implicit human computer interface enables the user to acquire the services, even though the user don’t know the IT technology. In this paper, we propose two BLE based protocols (B-LIDx protocol, B-PniP). B-LIDx protocol is the protocol for locationing the mobile device in indoor. B-PniP is a zero-configure opportunistic direct M2M communication protocol between neighbor devices to achieve the autonomous communication concept with zero-configuration. The protocol’s evaluations are performed by measuring the time for finding the location of a mobile device in actual environment and aligning the time spent in services using the B-PniP. 논문 14-39C-02-05 한국통신학회논문지(J-KICS) '14-02 Vol.39C No.02 http://dx.doi.org/10.7840/kics.2014.39C.2.151 151 ※본 연구는 미래창조과학부 및 한국산업기술평가관리원의 산업융합원천기술개발사업(SW.컴퓨팅)의 일환으로 수행되었습니다. [10041145, 자율군집을 지원하는 웰빙형 정보기기 내장 소프트웨어 플랫폼 개발] First Author : 경북대학교 전자공학부 실시간시스템 연구실, ohyoungho88@naver.com, 학생회원 ° Corresponding Author : 경북대학교 전자공학부 실시간시스템 연구실, sjkang@ee.knu.ac.kr, 종신회원 * 경북대학교 전자공학부 실시간시스템 연구실, faithlee3@hanmail.net 논문번호:KICS2013-11-495, 접수일자:2013년 11월 15일, 심사일자:2014년 1월 14일, 최종논문접수일자:2014년 1월 27일 한국통신학회논문지(J-KICS) '14-02 Vol.39C No.02