Patents by Inventor Sirpa Aakula

Sirpa Aakula 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).

  • Mobile communication system in which a numbering domain is divided into blocks by the use of indexing rules
    Patent number: 6223049
    Abstract: A mobile communication system comprising subscribers provided with identifiers (101), one or more mobile exchanges, and a numbering domain allocated to the mobile communication system, the numbering domain comprising subscriber identifiers (101, 103). In the mobile communication system, a predetermined part (104) of the identifier (101, 103) of each subscriber forms an index (104) which refers to a predetermined protocol (106) to be applied to the identifier (103). The protocol (106) consists of one or more rules (108). These rules (108) define variables (111) on the basis of which subscriber identifiers (101, 103) belonging to a predetermined block of the numbering domain are interpreted in a predetermined manner.
    Type: Grant
    Filed: December 14, 1998
    Date of Patent: April 24, 2001
    Assignee: Nikia Telecommunications OY
    Inventors: Sirpa Aakula, Jouko Ahvenainen