The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 23, 1999
Filed:
Sep. 03, 1997
Udo Hinz, Jarfalla, SE;
Per Viktor Israelsson, Taby, SE;
Telefonakitiebolaget LM Ericsson, Stockholm, SE;
Abstract
A method and apparatus in a system comprising cordless telecommunication utilize fuzzy-logic to evaluate at least two radio communication parameters when making a handoff decision, or to produce basic data on which a handoff decision can be made. The parameters are assigned membership to at least two input data sets, each having its own membership function. The parameters are divided into groups and a rule table of fuzzy-condition statements is formed. The fuzzy-condition statements are executed and the consequences weighted to a crisp-value which is used in conjunction with handoff. The inventive apparatus includes a fuzzy-processing unit for grouping parameters and executing rules, a unit for determining the crisp-values, for instance the average value, maximum value and/or the minimum value of rule consequences, and an evaluating unit which uses the crisp-values in conjunction with establishing a candidate list or in making a handoff decision.