A Survey of Multicast Routing Protocols for Ad-Hoc Wireless Networks

Abstract Many network applications require transmitting the same single copy of data packets concurrently to many destinations, it is called multicasting. Wired and infrastructure-based wireless networks are supported by many multicast routing protocols. But, applying this concept in Mobile Ad hoc wireless NETworks (MANETs) is a big challenge. Ad hoc wireless networks composed of self-organized mobile nodes that can move arbitrarily without any preexisting communication infrastructure base stations. It causes producing dynamic and unpredictable network topology. Many proposals are introduced trying to solve multicast supporting problem in MANETs. In this paper, multicast routing protocols in MANETs that was proposed in recent years will be classified according to different view points such as multicast topology, topology initialization, topology maintenance, core or coreless approach, and dependency on unicast routing protocols

Processing-in-Memory in the Exascale Computing and Big Data era: a Structured Approach

The aim of this Thesis was to study Processing-in-Memory (PIM) architectures, in current Exascale Computing and Big Data era, exploiting a structured approach and a methodology able to capture all the useful details to carry out a performance, as well as energy, characterization of structured parallel programs targeting PIM systems

Constructing efficient self-organising application layer multicast overlays

EThOS - Electronic Theses Online ServiceGBUnited Kingdo

Constructing efficient self-organising application layer multicast overlays

This thesis investigates efficient techniques to build both low cost (i.e. low resource usage) and low delay ALM trees. We focus on self-organising distributed proposals that use limited information about the underlying physical network, limited coordination between the members, and construct overlays with bounded branching degree subject to the bandwidth constraint of each individual member

On the Enabling of Multi-user Communications with Reconfigurable Intelligent Surfaces

Reconfigurable Intelligent Surface (RIS) composed of programmable actuators is a promising technology, thanks to its capability in manipulating Electromagnetic (EM) wavefronts. In particular, RISs have the potential to provide significant performance improvements for wireless networks. However, to do so, a proper configuration of the reflection coefficients of the unit cells in the RIS is required. RISs are sophisticated platforms so the design and fabrication complexity might be uneconomical for single-user scenarios while a RIS that can service multi-users justifies the costs. For the first time, we propose an efficient reconfiguration technique providing the multi-beam radiation pattern. Thanks to the analytical model the reconfiguration profile is at hand compared to time-consuming optimization techniques. The outcome can pave the wave for commercial use of multi-user communication beyond 5G networks. We analyze the performance of our proposed RIS technology for indoor and outdoor scenarios, given the broadcast mode of operation. The aforesaid scenarios encompass some of the most challenging scenarios that wireless networks encounter. We show that our proposed technique provisions sufficient gains in the observed channel capacity when the users are close to the RIS in the indoor office environment scenario. Further, we report more than one order of magnitude increase in the system throughput given the outdoor environment. The results prove that RIS with the ability to communicate with multiple users can empower wireless networks with great capacity

Collaborative communications among multiple points.

Zhang Xinyan.Thesis (M.Phil.)--Chinese University of Hong Kong, 2004.Includes bibliographical references (leaves [78]-[85]).Abstracts in English and Chinese.Chapter 1 --- Introduction --- p.1Chapter 1.1 --- Multiple Point Communication --- p.1Chapter 1.2 --- Major Contributions --- p.2Chapter 1.3 --- Thesis Organization --- p.4Chapter 2 --- Related Work --- p.5Chapter 2.1 --- Peer-to-Peer Networks --- p.5Chapter 2.2 --- Application Layer Multicast --- p.11Chapter 2.3 --- Internet Traffic Engineering --- p.19Chapter 3 --- MultiServ: Application Layer Multiple Path Routing --- p.23Chapter 3.1 --- Motivation --- p.24Chapter 3.2 --- MultiServ Overlay Construction --- p.28Chapter 3.3 --- MultiServ Routing --- p.33Chapter 3.3.1 --- The importance of routing strategy --- p.33Chapter 3.3.2 --- Solutions for IP network --- p.35Chapter 3.3.3 --- MultiServ routing --- p.37Chapter 3.3.4 --- MultiServ routing with bounded complexity --- p.39Chapter 3.3.5 --- Routing implementation --- p.41Chapter 3.4 --- Performance Evaluation --- p.45Chapter 3.4.1 --- End-to-end streaming --- p.45Chapter 3.4.2 --- Application-layer multicast --- p.50Chapter 3.4.3 --- Experiments in real network --- p.54Chapter 3.5 --- Summary and Future Work --- p.57Chapter 4 --- DDS: Distributed Dynamic Streaming --- p.59Chapter 4.1 --- Motivation --- p.59Chapter 4.2 --- Distributed Dynamic Streaming --- p.61Chapter 4.2.1 --- DDS overlay construction --- p.62Chapter 4.2.2 --- DDS streaming --- p.64Chapter 4.3 --- Performance Analysis in Dynamic User Environment --- p.66Chapter 4.3.1 --- Basic definition and user model --- p.67Chapter 4.3.2 --- Data outage in tree topology --- p.68Chapter 4.3.3 --- Data outage in DDS --- p.70Chapter 4.4 --- Performance Evaluation --- p.73Chapter 4.4.1 --- Simulation setup --- p.73Chapter 4.4.2 --- Simulation results --- p.74Chapter 4.5 --- Summary and Future Work --- p.75Chapter 5 --- Concluding Remarks --- p.76Bibliography --- p.7