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We study the capacity and delay scaling laws for cognitive radio network (CRN) with static primary users and heterogeneous mobile secondary users coexisting in the unit planar area. The primary network consists of n randomly and uniformly distributed static primary users (PUs) with higher priority to access the spectrum. The secondary network consists of m = (h + 1)n1+∈ heterogeneous mobile secondary...
Data dissemination and discovery is critical for ad-hoc wireless sensor networks. Most existing research depends on location information that is not always obtained easily, efficiently and accurately. We propose the concept of Contour-cast, a location-free data dissemination and discovery approach for large-scale wireless sensor networks. One important property of Contour-cast is that it does not...
A Mobile Ad-hoc NETwork (MANET) is composed of Mobile Nodes (MNs) without any infrastructure. MNs selforganize to form a network over radio links. In this environment, multicast routing protocols are faced with the challenge of producing multi-hop routing under host mobility and bandwidth constraint. Multicast routing plays a significant role in MANETs. In recent years, various multicast routing protocols...
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