Patents by Inventor Walter da Cruz Freitas, Jr.

Walter da Cruz Freitas, Jr. 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).

  • Patent number: 9955480
    Abstract: A low-complexity, efficient Radio Resource Allocation method performed by a base station of a wireless communication network allocates a first plurality of frequency resources among a second plurality of requesting mobile terminals. Each mobile terminal employs a service such that two or more services are represented in the second plurality. The RRA method satisfies all of an exclusivity constraint that each frequency resource is allocated to only one mobile terminal, an adjacency constraint that all frequency resources allocated to any given mobile terminal are contiguous in a frequency domain, and a minimum service requirement constraint that a predetermined number of the mobile terminals employing each service be granted a required data rate. The RRA method comprises two phases: Unconstrained Maximization and Reallocation.
    Type: Grant
    Filed: November 13, 2013
    Date of Patent: April 24, 2018
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Tarcísío Maciel, Francisco Rodrigo Porto Cavalcanti, Walter da Cruz Freitas, Jr., Francisco Rafael Marques Lima, Emanuel B. Rodrigues, Nibia Sousa Bezerra
  • Patent number: 9136918
    Abstract: Systems and methods provide for applying a clustering based assignment algorithm (CbAA) in a telecommunication system. A method includes: receiving strength information for transmission points belonging to an associated Coordinated Multi-Point (CoMP)-cell; determining the clustering subsets, wherein the step of determining the clustering subsets includes: applying a k-means algorithm to the strength information to form K clusters; identifying the cluster associated with each UE; associating a cluster to each transmission point in accordance to a pre-defined rule; and selecting the UEs to be serviced; and reporting the clustering formations.
    Type: Grant
    Filed: May 29, 2012
    Date of Patent: September 15, 2015
    Assignee: TELEFONAKTIEBOLAGET L M ERICSSON (PUBL)
    Inventors: Elvis M. G. Stancanelli, Tarcisio Maciel, Yuri C. B. Silva, Walter da Cruz Freitas, Jr., Francisco R. P. Cavalcanti