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:
Jan. 06, 2015
Filed:
May. 11, 2005
Mark Yarkosky, Overland Park, KS (US);
Shiva Narayanabhatla, Overland Park, KS (US);
John Cheong-wai Ngan, Shawnee, KS (US);
Dae-sik OH, Overland Park, KS (US);
Mark Yarkosky, Overland Park, KS (US);
Shiva Narayanabhatla, Overland Park, KS (US);
John Cheong-Wai Ngan, Shawnee, KS (US);
Dae-Sik Oh, Overland Park, KS (US);
Sprint Spectrum L.P., Overland Park, KS (US);
Abstract
Assigning CDMA channel codes in a multiple beam zone sector such that they may be reused within the same sector. In an exemplary embodiment, the method includes configuring directional antennas in a cell sector to provide multiple beam zones in a cell sector and assigning channel codes for use within the beam zones such that each channel code is assigned for use in only one beam zone of any set of three consecutive beam zones in the cell sector. The reassignment is preferable conditioned upon the mobility status of the user. This effectively reduces the inter-user interference by ensuring at least two intervening beam zones are located between zones that are using the same channel codes, and that the second user is not mobile. The channel codes may be Walsh codes or quasi-orthogonal functions (QOFs).