Carlos Palau Salvador

On using Content Delivery Networks to improve MOG performance

Improvement of Multiplayer Online Game (MOG) performance has been addressed by different means. The number of simultaneous online users, the variable latency of the network owing to overload in the servers and the bandwidth required to ensure a good quality-of-service are the principal problems in MOG. This paper proposes an architecture that could improve the performance of previous proposals, using a Content Distribution Network (CDN) infrastructure. The core element in a CDN is the redirection algorithm which will send the players to the most adequate server according to network conditions. CDN provides a reduction in latency and at the same time a load balancing mechanism among players.

A collaborative mobile architecture for multicast live-streaming social networks

Multimedia social network analysis is an emerging research area, which analyzes the behaviour of users who share multimedia content and investigates the impact of human dynamics on multimedia systems. In collaborative mobile networks, receivers cooperate with each other to provide a distributed, highly scalable and robust platform for live streaming applications. However, every user wishes to use as much bandwidth as possible to receive a high-quality video; then, congestion control should be addressed. This paper proposes a collaborative mobile architecture to model receiver (in this case user) behaviour using congestion control and reliable strategies to stimulate user cooperation in multicast live streaming. Thus, an authors protocol named Scalable Reliable Multicast Stair Hybrid (SRMSH) is presented as new hybrid multiple layer mechanism for multicast congestion control providing detection and recovery loss. Simulation results show that the proposed strategies can effectively stimulate user cooperation, achieve cheat free and provide reliable services within a mobile multimedia social network.

Performance Studio of Multicast Video Streaming Using SRMSH

With the increasing deployment of multimedia real-time Internet applications, evaluating transport protocol metrics of quality of service (QoS) has gained rapidly increasing importance. In this paper, a novelty protocol named scalable reliable multicast stair hybrid (SRMSH) is presented as new hybrid multiple layer mechanism for multicast congestion control providing detection and recovery loss. Then SRMSH is simulated with video streaming traffic source to measure fundamental components to real-time multimedia applications: throughput, latency and jitter. Work is focused on performance analysis and results obtained from NS-2 traces clearly conclude that SRMSH exhibits interesting insights using these metrics of real-time multimedia applications

A bandwidth analysis of multicast congestion control using the SRMSH approach

The study of congestion control for Internet reliable multicast is at present an active research field. In this paper we present scalable reliable multicast stair hybrid (SRMSH) as a multiple layer mechanism for multicast congestion control providing detection and recovery loss. We simulated SRMSH with different traffic sources to measure heterogeneity, scalability and fairness. Our work focus on bandwidth analysis and results clearly conclude that SRMSH exhibits reasonable throughput using these metrics and a good performance competing with typical traffic flow from Internet like TCP.