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, 2009
Filed:
Sep. 02, 2004
Per Hans Ake Willars, Stockholm, SE;
Karl Anders Näsman, Solna, SE;
Per Hans Ake Willars, Stockholm, SE;
Karl Anders Näsman, Solna, SE;
Telefonaktiebolaget L M Ericsson (publ), Stockholm, SE;
Abstract
Methods and an arrangement for synchronizing communication of framed data via asynchronous base stations (BSBS) in a cellular communication system are presented. The synchronization methods are performed continuously by sending out certain system frame counter states from a central node in the system to all its connected base stations (BSBS). Each base station (BSBS) includes a local frame counter (LFC, LFC), which generates local frame counter states (t()-t(), t()-t()) correlated to the system frame counter states. Transmission of information via the base stations (BSBS) is synchronized by assigning each data frame (DR()-DR()) a particular frame number, which is given by the local frame counter states (t()-t(), t()-t()), so that data framed (DF()-DF ()) having identical numbers contain copies of a certain data packet. Correct frame numbers are derived from common downlink channel offset measurements (CCOCCO) carried out in the base stations (BSBS), and timing advances values (TA) and downlink channel offsets (DCODCO) calculated in the central node.