Bluetooth handover control for roaming system applications

George, M.L.; Kallidukil, L.J.; Chung, Jong-Moon

doi:10.1109/mwscas.2002.1187242

Cited by 15 publications

(6 citation statements)

References 4 publications

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“…Most published works on handoff algorithms have been done for Bluetooth. In George et al [15], the authors discuss three soft handoff methods. In these methods, the base stations can measure the relative received signal strength (RSSI).…”

Section: Roaming Supportmentioning

confidence: 99%

EcoPlex: Empowering compact wireless sensor platforms via roaming and interoperability support

Hsueh

et al. 2009

Proceedings of the 6th Annual International Conference on Mobile and Ubiquitous Systems: Computing, Networking and Services

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Abstract-EcoPlex is an infrastructure that enables simple wireless platforms to participate seamlessly in a feature-rich, wireless ad hoc network. EcoPlex consists of gateways that are responsible for handoff support for mobility and high data rate without burdening the simple nodes to implement multihop protocols. The gateways also create virtual identities for simpler nodes to enable their participation in the feature-rich network without adding complexity to them. We demonstrate the feasibility of this idea with the ultra-compact wireless sensor platform called Eco to participate as virtual nodes in a fully general ZigBee network. Experimental results show EcoPlex to be efficient and scalable. The enhanced mobility and interoperability are added to the Eco platform at the infrastructure level, all with minimal node complexity.

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Section: Roaming Supportmentioning

confidence: 99%

EcoPlex: Empowering compact wireless sensor platforms via roaming and interoperability support

Hsueh

et al. 2009

Proceedings of the 6th Annual International Conference on Mobile and Ubiquitous Systems: Computing, Networking and Services

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“…Proactive handoffs can trigger a migration procedure with respect to several criteria, such as monitoring the Receiver Signal Strength Indicator (RSSI) [6,7,8,9], using a set of defined quality parameters [10,11], and/or using a user-driven triggering [12]. In the direction of RSSI schemes, some of the above mentioned proactive solutions, such as [6,9] are based on a fixed threshold mechanism, that is, the handoff is initiated when the RSSI falls below a certain threshold. Other solutions use a more complicated RSSI processing, for example using fuzzy controllers [7], or mobility prediction [8].…”

Section: Related Workmentioning

confidence: 99%

“…Reactive handoff schemes are an example of hard handoffs, whereas proactive approaches can be either hard or soft. Indeed, among the above mentioned proactive solutions, some of them are hard [6,9], and the rest are soft. Soft handoffs have the advantage of providing continuity of service during AP switching.…”

Section: Related Workmentioning

confidence: 99%

Achieving all the time, everywhere access in next-generation mobile networks

Cinque

Cotroneo

Russo

2005

SIGMOBILE Mob. Comput. Commun. Rev.

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“…Problems like this can result in the communication link being disconnected every time the instructor(s) moves from one room to another. The soft handover procedures based on Bluetooth's scatternet topology enables a make-before-break soft handover procedure to be possible (George, Kallidukil, and Chung, 2002). In other words, since a WI device can be registered in two piconets at the same time, a new link can be made before the old link gets disconnected.…”

Section: Instructor Locator Pager and Data Communicator Systemmentioning

confidence: 99%

A Wireless Instructor System for Computer-Supported Collaborative Learning Requiring Immersive Presence (CSCLIP)

et al. 2005

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The Computer-Supported Collaborative Learning Requiring Immersive Presence (CSCLIP) concept has been established with the objective of extending and enhancing the e-learning experience of distance education, especially for classes that involve laboratory (lab) experiments. The CSCLIP concept defines "immersive presence" as an inherent requirement that enables cognitive, affective, and most importantly psychomotor learning objectives to integrate into designs and concepts for next generation e-learning systems (Sharda et al., 2003). Within the CSCLIP architectural framework, the Wireless Instructor (WI) system has been conceptualized and developed as an essential device to effectively support "teaching while roaming" instructional features for both local and distance students.The WI system provides cost effective means to establish a realtime immersive presence for the distance learning (DL) student and his/her lab group peers. The technical design and system architecture to create a WI system are introduced in this paper. The objective of the WI system is to make the learning experience more vivid and interactive by enabling the DL students, as well as the local students that are not in the same room with the instructor(s) at the same time, to be able to flexibly interact with the instructor(s) in real-time. With this system the students can experience real-time or non-real-time virtual tours with the instructor(s), enabling the students to visit places that may not be easily accessible due to distance, limited space and/or time, cost, or possible danger. The WI system consists of two major sub-components. First is a wireless audio and video (AV) system, which transfers real-time AV signals to and from the instructor(s) to all students. Second is the wireless instructor locator & data assistant system. These two systems can be combined into one WI unit, but as the applied development technologies are somewhat distinct, their features and architectural designs will be described separately throughout this paper. Integration of the two systems will enable further capabilities.

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Bluetooth handover control for roaming system applications

Cited by 15 publications

References 4 publications

EcoPlex: Empowering compact wireless sensor platforms via roaming and interoperability support

EcoPlex: Empowering compact wireless sensor platforms via roaming and interoperability support

Achieving all the time, everywhere access in next-generation mobile networks

A Wireless Instructor System for Computer-Supported Collaborative Learning Requiring Immersive Presence (CSCLIP)

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