Journal of Applied Sciences1812-56541812-5662Asian Network for Scientific Information10.3923/jas.2009.1711.1718Pomares HernandezS.E. Lopez DominguezE. Rodriguez GomezG. FanchonJ. 9200999The study presents an efficient Δ-causal algorithm
for the transmission of real-time continuous media (e.g., audio and video)
in distributed systems. The Δ-causal algorithm is oriented to be
used in real-time collaborative applications, such as Teleconferece and
Teleimmersion. The Δ-causal algorithm ensures causal delivery of
messages with time constraints in partial-reliable and asynchronous networks
without using global references. To achieve this, the algorithm introduces
an original Forward Error Correction (FEC) mechanism and a method to calculate
the message lifetime based on relative time points. One interesting aspect
of the FEC mechanism is that the redundant data sent is dynamically adapted
according to the behavior of the system. Finally, it is shown that the
Δ-causal algorithm is efficient in terms of the overhead (causal
history) attached per message.]]>Baldoni, R., R. Prakash, M. Raynal and M. Singhal, 199813263271Baldoni, R., M. Raynal, R. Prakash and M. Singhal,19961996pp: 617624Birman, K.,1993363753Lamport, L.,197821558565Lopez, E., J. Estudillo, J. Fanchon and S. Pomares,20052005pp: 465470Mattern, F.,19891989pp: 215226Olsen, J.,20031st Edn.,Perkins, C.,20031st Edn.,pp: 432pp: 432Hernandez, S.P., J. Fanchon and K. Drira,200466179Prakash, R., M. Raynal and M. Singhal,199741190204Tachikawa, T. and M. Takizawa,19971997pp: 260267Lopez, E., S. Pomares and G. Rodriguez,20088136144Nishimura, T., N. Hayashibara, T. Enokido and M. Takizawa, 20052005pp: 560564Plesca, C., R. Grigoras, P. Queinnec, G. Padiou and J. Fanchon,20062006pp: 316321