Trigger Management Mechanisms

Abstract

Abstract-Current protocol stacks can handle only a handful of events that may trigger actions for mobility management, such as signal strength indicators and cell load. We argue for new mechanisms that can deal with a greater variety of triggering events, which may originate from any component of the node's protocol stack as well as mobility management entities within the network. We present the main concepts that govern our trigger management mechanisms (TMM), which aim at operating in a richer mobility management framework, and enable the deployment of new applications and services. After summarizing the architectural requirements with respect to trigger collection, processing, storage, and dissemination, we introduce a real implementation of TMM on commodity mobile devices. We briefly review our testbed environment and present experimental results using TMM to drive a lossless streaming video session handover between a laptop and a PDA. We position the current TMM design and implementation within the Ambient Networks architecture, centering in particular on the use of policies to steer TMM operation, and the role that TMM can play in an information service infrastructure. Finally, we outline current and future work items.

Distributed decision engine — An information management architecture for autonomie wireless networking

“…In comparison to TRG [12], from which the concept of DDE has evolved, the design of DDE has improved on Also, more security aspects have been taken into account in development of DDE from the very beginning. For example, all the messaging in DDE is signed with digital signatures.…”

An architecture for adaptive multimedia streaming to mobile nodes

“…To make an informed handover decision considering the QoE of the video stream in this environment, the mobile node collects and utilizes information related to the available access options' characteristics obtained through a cross-layer mechanism. Candidate crosslayer signaling frameworks for our work are the IEEE 802.21 Media Independent Handover (MIH) framework [8] and the triggering framework [13].…”

“…However, neither of these metrics are capable of reflecting the actual transmission conditions in terms of available bandwidth, delay or loss characteristics of the link. Systems that use cross layer information to assist mobility-related operations in heterogeneous networks include the emerging IEEE 802.21 MIH service [8] and the triggering framework [13]. Here, MIH defines a set of link and physical layer parameters for access link selection, and also includes QoS-related parameters like throughput, Class of Service (CoS) average packet transfer delay, and CoS packet loss rate.…”