21-03-2011, 07:59 AM
I would like 2 get the report of this topic
21-03-2011, 07:59 AM
I would like 2 get the report of this topic
05-05-2011, 02:29 PM
Abstract With the increasing pervasiveness of wireless computing technologies, users will benefit from the automatic interactions among personal devices and environments. However, current interaction systems have some limitations in terms of the problems with a centralized server, assumption of wide area wireless connectivity, or designated services instead of the universal ad hoc interaction. In this paper, we proposed a software framework for heterogeneous Bluetooth enabled devices and environments to interact with each other, based on minimum assumptions on the capabilities and infrastructure on devices & environments. The key elements of framework include Ad Hoc Sensing & Discovery Code, Mobile Code and Applications. With the framework built on Java and mobile code, we realize easily the ad hoc interactions between heterogeneous devices and environments. To demonstrate our concept, we implemented the blue_remote which uses a PDA (Personal Digital Assistant) to control a PC (Personal Computer) and alert system which allows applications in PC to make use of SMS (Short Message Service) application on PDA. Keywords—Heterogeneous Ad Hoc Interaction, Framework, Device, Environment, Mobile Code I. INTRODUCTION Pervasive computing is the next generation computing environments with information & communication technology everywhere, for everyone, at all times [1]. With the increasing pervasiveness of wireless technologies, users will benefit from the interactions among heterogeneous devices and environments. For example, the elderly/disabled people use personal devices to control environment, such as opening the door, controlling the sound volume, and so on. At the same time, a PC with sensors monitors their conditions and sends SMS via mobile phone to alert doctors/relatives if they fall down or other danger happens. Hodes et al. defined Universal Interaction as allowing a device to adapt its functionality to exploit services it discovers as it moves into a new environment [2]. In this paper, we define “Device” as any personal device owned/used by a user and “Environment” as anything from a single desktop to a highly enhanced pervasive computing environment. Ad-hoc interaction allows a mobile device to discover, interact and request available local services when it comes into a new environment, with minimum or without installation in advance. One possible scenario of the ad hoc interaction is that George, an elderly person, goes to see a specialist when he feels pain in his heart (Fig. 1). When George arrives at the hospital, his PDA interacts with the hospital environment and shows the map for him to reach the specialist room. After the specialist makes the necessary medical checks, George is advised to stay in a hospital room for observation. In the hospital room, a PC is connected to several sensors for monitoring patients and it also provides several entertainment programs for patients. When George stays in bed and is monitored by sensors in his body, he uses his PDA to select a music program in the PC and adjust the volume of sound to make him calm. At the same time, the PC collects and processes the data from sensors. If the PC detects a distress signal from George, it sends an alert message to inform doctor/nurse at once. The above interaction scenarios are characterized by a number of challenges: devices interaction can be ad-hoc and spontaneous; devices and environments are heterogeneous; and context of user, device and environment is dynamic [3]. Our research contribution is in developing a software framework that allows heterogeneous devices and environments to interact with each other, and with minimal assumptions on the capabilities and infrastructure on devices & environments. Download full report http://www1.i2r.a-star.edu.sg/~guohq/PDF...07_Guo.pdf |
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