Assessing the overall performance of wireless communication networks is of key importance for optimal management and planning. With special regard to wireless networks operating in an unlicensed band, evaluating overall performance mainly implies facing coexistence issues, associated with the contemporaneous presence of true and interfering signals at physical layer. This task is difficult, if not prohibitive, to be fulfilled only on the basis of single-layer measurements; a partial perspective of network behavior would, in fact, be gained. At this concern, a cross-layer approach is presented hereinafter. It provides for several measurements, to be concurrently carried out at different layers through a proper automatic station. It aims at correlating the values major physical layer quantities (e.g. channel power, signal-to-interference ratio) exhibit to those characterizing key higher layers’ parameters (e.g. packet loss ratio, one-way delay), in the presence of interference. A first step towards a full characterization of how the effects of a problem, experienced either at physical layer propagates along the whole protocol stack can thus be taken.

Cross-Layer Measurements for a Comprehensive Characterization of Wireless Networks in the Presence of Interference

2007

Abstract

Assessing the overall performance of wireless communication networks is of key importance for optimal management and planning. With special regard to wireless networks operating in an unlicensed band, evaluating overall performance mainly implies facing coexistence issues, associated with the contemporaneous presence of true and interfering signals at physical layer. This task is difficult, if not prohibitive, to be fulfilled only on the basis of single-layer measurements; a partial perspective of network behavior would, in fact, be gained. At this concern, a cross-layer approach is presented hereinafter. It provides for several measurements, to be concurrently carried out at different layers through a proper automatic station. It aims at correlating the values major physical layer quantities (e.g. channel power, signal-to-interference ratio) exhibit to those characterizing key higher layers’ parameters (e.g. packet loss ratio, one-way delay), in the presence of interference. A first step towards a full characterization of how the effects of a problem, experienced either at physical layer propagates along the whole protocol stack can thus be taken.
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11367/25489
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