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We propose a real-time message scheduling algorithm which is applied to schedule periodic real-time messages in IEEE 802.15.4 for LR-WPAN(Low Rate Wireless Personal Area Network). The standard allows GTSs (Guaranteed Time Slots) in the optional use of a superframe structure in a beacon-enabled network to be used to exchange real-time messages. To utilize(More)
— We propose a management framework for sensor networks based on the standard service discovery protocol, UPnP. Using UPnP, we can achieve easy deployment of sensor network services and provide zero-configuration sensor networking. Since sensor nodes are highly resource limited, it is not feasible to accommodate UPnP protocol in each sensor node. Thus, the(More)
Despite the popularity of current Radio Frequency Identification (RFID) and Wireless Sensor Networks (WSN), current research fails to propose the global vision that is needed for truly pervasive computing. In this paper we introduce our effort to build a global standard infrastructure for WSN and RFID based on the EPCglobal standard Architecture Framework.(More)
— In this paper, we present a UPnP-ZigBee internetworking architecture. Different from traditional internetworking architectures which focus on integrating either wired networks or single-hop wireless networks into UPnP networks, integrating ZigBee with UPnP is more difficult because ZigBee nodes communicate over multi-hop wireless network, and further(More)
A Body Sensor Network (BSN) is a network of sensors that sense vital signs of a human body. The vital signs can be divided into two categories based on significance to the life: critical and non-critical signs. The critical vital signs, or real-time messages (RTMs), should be transmitted within the deadlines, and they must not be collided. On the other(More)
In this paper, we present a real application system based on wireless sensor network (WSN) for fence surveillance which is implemented on our development platform for WSN, called ANTS (An evolvable Network of Tiny Sensors). Our system, called the WFS system, is expanded to connect and control a robot (UGV/UAV) and a camera sensor network for the purpose of(More)
—Industrial applications of wireless sensor networks require timeliness in exchanging messages among nodes. Although IEEE 802.15.4 provides a superframe structure for real-time communication, a real-time message-scheduling algorithm is still required to schedule a large number of real-time messages to meet their timing constraints. We propose a(More)