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Data reporting strategy in heterogeneous wireless sensor networks can be differentiated based on task-specific requirements. In this paper, we propose a novel two-phase data reporting (TDR) scheme that supports class-based QoS to sensor nodes in different priority classes. In the first phase, time slots are divided into separate data reporting round defined for each class, while in the second phase,...
In this paper, we propose an integrated cross-layer data reporting scheme focusing on communication protocols in wireless sensor networks. The scheme operates based on the various application demands and available resources to provide an adaptive quality of service (QoS). The goal of this work is to achieve the expected information quality at the end system by efficiently controlling data reporting...
On behalf of the organizing committee, we are pleased to present to you the proceedings of the First International Workshop on Information Quality and Quality of Service for Pervasive Computing, IQ2S 2009. The workshop is the first in a series intended to the creation of a forum to exchange ideas, present results, share experience, and enhance collaborations among researchers, professionals, and application...
Emerging multi-rate wireless systems both cellular (cdma2000, high data rate (HDR)) and Wi-Fi like systems demand that the currently used channel estimation and scheduling techniques be revisited. Not only the channel estimation, prediction algorithms, and protocols need to be modified, the premise for evaluating their performance needs to be changed. Current techniques comprise of scheduling algorithms...
In this paper, we propose an adaptive forward error correction (FEC) and rate control technique to improve service quality in a wireless gaming environment. In particular, we concentrate on a centralized server gaming architecture (our results can be extended to peer-to-peer architectures as well), where wireless users can also connect to the gaming service. Our models are well-suited for last-hop...
Application-level protocol abstraction is required to support seamless mobility in next generation heterogeneous wireless networks. Session initiation protocol (SIP) provides such an abstraction in providing mobility support in such networks. However, the handoff procedure with SIP suffers from undesirable delay and hence packet loss for some cases, which is detrimental to applications such as voice...
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