Invalidity dossier
US 6560211
Method and apparatus for variable and fixed forward link rate control in a mobile radio communication system
Current assignee: Qualcomm Inc
Added 9/21/2026, 10:40:40 AM
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Patent summary
Title, assignee, inventors, filing/issue dates, abstract, and a plain-language overview of the claims.
Patent Overview — US 6,560,211 B2
Title: Method and apparatus for variable and fixed forward link rate control in a mobile radio communication system.
Assignee/Original Assignee: Qualcomm Inc.
Key dates (per the supplied record): Priority date 1999-01-15; application filed 2000-12-22 (App. No. US09/748,319); publication of US20010000750A1 on 2001-05-03; patent granted/publication date 2003-05-06; adjusted expiration 2019-05-20 (status: Expired – Lifetime). Google notes these dates and the legal status are assumptions, not legal conclusions.
Inventors: Eduardo A. S. Esteves; Rajesh K. Pankaj; Peter J. Black; Matthew S. Grob; Nagabhushana T. Sindhushayana.
Purpose and plain-language scope: The invention concerns controlling the rate at which data (non-voice traffic such as internet or fax) is transmitted on the forward link from a base station to a mobile station in a CDMA mobile radio system. The mobile station alternately receives information in either a variable rate mode, where the transmission rate may change between successive data transmit intervals, or a fixed rate mode, where the rate is held fixed between intervals. The base station monitors control information sent by the mobile station on the reverse link to determine when the reverse link is weak and unbalanced relative to the forward link. When variable rate control information can no longer be reliably received, the mobile station tries to locate another base station able to serve it in variable rate mode at a high rate—provided that station's long-term average forward link signal-to-noise ratio is not significantly lower than the first base station's. If none is found, data continues from a designated base station in fixed rate mode. The mobile station returns to variable rate mode when the designated base station can again reliably receive variable rate control information and its forward link long-term average SNR exceeds a threshold, or when another base station exceeds by a threshold the SNR needed to support fixed rate transmission. The description also references FIGS. 1–4 (system operation and mobile/base station block diagrams).
Not established by this excerpt: The full text of the claims, the complete specification, the exact thresholds/parameters, and the omitted portions of the description. No prior art, litigation, ownership-transfer, or validity analysis is addressed here. Nothing beyond the supplied text is asserted.
Generated 10/1/2026, 10:01:21 PM
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PTAB challenges
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Assignment history
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Prior art
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