Patents by Inventor Rui Manuel Pacheco Meireles

Rui Manuel Pacheco Meireles has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Density-aware zone-based packet forwarding in vehicular networks
    Patent number: 9491684
    Abstract: A method for multi-hop forwarding of data packets in vehicular ad-hoc networks is disclosed. Each node knows both its own and the destination's geographical coordinates. The coordinates of the one-hop neighbors are obtained from periodically broadcast Cooperative-Awareness Messages (CAMs). The method comprises the following distributed coordination scheme, executed by each node upon receiving a packet: i) computing the set of candidate forwarders; ii) ranking the candidate forwarders according to an utility metric; iii) forwarding the packet after a period of time proportional to its rank if top-ranked, dropping the packet otherwise. The base utility metric used for ranking forwarders is the inverse of the distance to the destination. Moreover, an extension is disclosed where this metric is replaced by the inverse of the expected number of packet transmissions to reach the destination. The latter metric is calculated based on spatial connectivity information cooperatively collected by nodes in the network.
    Type: Grant
    Filed: September 30, 2013
    Date of Patent: November 8, 2016
    Assignees: Universidade Do Porto, Carnegie Mellon University
    Inventors: João Francisco Cordeiro De Oliveira Barros, Rui Manuel Pacheco Meireles, Peter Alfons Roland Steenkiste
  • DENSITY-AWARE ZONE-BASED PACKET FORWARDING IN VEHICULAR NETWORKS
    Publication number: 20150163720
    Abstract: A method for multi-hop forwarding of data packets in vehicular ad-hoc networks is disclosed. Each node knows both its own and the destination's geographical coordinates. The coordinates of the one-hop neighbors are obtained from periodically broadcast Cooperative-Awareness Messages (CAMs). The method comprises the following distributed coordination scheme, executed by each node upon receiving a packet: i) computing the set of candidate forwarders; ii) ranking the candidate forwarders according to an utility metric; iii) forwarding the packet after a period of time proportional to its rank if top-ranked, dropping the packet otherwise. The base utility metric used for ranking forwarders is the inverse of the distance to the destination. Moreover, an extension is disclosed where this metric is replaced by the inverse of the expected number of packet transmissions to reach the destination. The latter metric is calculated based on spatial connectivity information cooperatively collected by nodes in the network.
    Type: Application
    Filed: September 30, 2013
    Publication date: June 11, 2015
    Inventors: João Francisco Cordeiro De Oliveria Barros, Rui Manuel Pacheco Meireles, Peter Alfons Roland Steenkiste