Method and apparatus in a cellular telecommunications system
CA 2547900 A1 · Owner: Nystroem, Johan · Inventors: Klang, Goeran N.; Nystroem, Johan; Frenger, Pal
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method for use in a cellular, FFT based multi-carrier communications system comprising N sub-carriers, for allocating a set P of sub-carriers to be reserved for potential use as carriers of specific information comprises the , following steps:- selecting a number M indicating the number of sub-carriers to be allocated to a set P of sub-carriers such that L=N/M is an integer- , allocating the at least two subcarriers of the set P={(n0+m*L) mod N : 0<=m<M} for the specific information, n0 being the offset of the lowest numbered subcarrier in P, the elements of P being indices each referring to the number , of a sub-carrier to be allocated. An apparatus for carrying out the method is …
Read the whole patent
Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed December 19, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 19, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 19, 2025.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.