This paper addresses the problem of geocasting in mobile ad hoc network (MANET) environments. Geocasting is a variant of the conventional multicasting problem. For multicasting, conventional protocols define a multicast group as a collection of hosts which register to a multicast group address. However, for geocasting, the group consists of the set of all nodes within a specified geographical r...

An ad hoc network is a dynamic wireless network with the engagement of cooperative nodes without a fixed infrastructure. Multicasting is intended for group communication that supports the dissemination of information from a sender to all the receivers in a group. Problems in ad hoc networks are the scarcity of bandwidth, short lifetime of the nodes due to power constraints, dynamic topology cau...

Since multimedia streaming has become very popular research topic in the recent years, this paper surveys the state of art techniques introduced for multimedia multicasting over mobile networks. In this paper, we give an overview of multimedia multicasting mechanisms in respect to cloud mobile communications, and we present some proposed solutions in perspective. We focus on the algorithms desi...

This paper considers the use of multicasting and spatial scoping in creating large-scale multi-user virtual environments. The asymmetry of network multicasting with respect to producers and consumers is discussed. Five approaches are described for using multicast groups in systems with spatially scoped interaction: one group per object, one group per world, location-based groups, content-associ...

Wireless sensor networks are embedded networks that are highly restricted to energy, bandwidth and processing power. Even though wireless sensor networks operate with limited resources, sensor nodes are required to do more functions compared to nodes in other data networks. Sensor nodes work as both hosts for processing sensed data and routers for forwarding packets. To decrease such a workload...

Design of a suitable routing protocol is difficult for mobile ad hoc networks due to its inherent dynamism and frequent topology change. Multicasting is even more complex because it requires transmission of an information to various destinations at approximately same time, if possible. Active research work in this field has resulted in a variety of proposals based on tree or mesh structures. Th...

There is increasing interest in group-based applications for video distribution, multimedia conferencing, publish and subscribe etc. Such applications can use networks efficiently by multicasting (supported traditionally at the network layer, but also now at the application layer). Designing such large-scale distributed systems is a complex task that can be aided by using a viewpoint approach t...

Noise properties of large-count spectral multicasting in a phase-insensitive parametric mixer were investigated. Scalable multicasting was achieved using two-tone continuous-wave seeded mixers capable of generating more than 20 frequency non-degenerate copies. The mixer was constructed using a multistage architecture to simultaneously manage high Figure-of-Merit frequency generation and suppres...

Web crawlers generate signi cant loads on Web servers, and are diÆcult to operate. Instead of running crawlers at many \client" sites, we propose a central crawler and Web repository that then multicasts appropriate subsets of the central repository to clients. Loads at Web servers are reduced because a single crawler visits the servers, as opposed to all the client crawlers. In this paper we m...