United States Patent 7,912,093
Chitrapu , et al. March 22, 2011
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Method and apparatus for providing piggybacked positive acknowledgement/negative acknowledgement field indicator and a polling indicator
Abstract
A method and apparatus of providing a piggybacked positive acknowledgement/negative acknowledgement (ACK/NACK) (PAN) field indicator (PANI) and a polling indicator are disclosed. A combined field of a PANI bit, a relative reserved block period (RRBP) bit and an EGPRS supplementary polling (ES/P) field may indicate a polling scheme and a presence of a PAN field. Alternatively, the presence of the PAN field in the data block may be indicated by using a specific training sequence. Alternatively, a forward error correction (FEC) coding may be performed on the data block including the header, and the presence of the PAN field may be indicated by scrambling the encoded bits corresponding the header with a specific scrambling sequence. Alternatively, a header check sequence (HCS) may be generated and the presence of the PAN field is indicated by mixing a predetermined sequence with the HCS.
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Inventors: Chitrapu; Prabhakar R. (Blue Bell, PA), Behrouz; Aghili (Melville, NY), Rudolf; Marian (Vitre, FR), Dick; Stephen G. (Nesconset, NY)
Assignee: InterDigital Technology Corporation (Wilmington, DE)
Appl. No.: 12/116,291
Filed: May 7, 2008
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Related U.S. Patent Documents
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Application Number Filing Date Patent Number Issue Date
60916691 May., 2007
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Current U.S. Class: 370/499 ; 370/346; 370/449; 370/479
Current International Class: H04J 7/02 (20060101); H04J 3/24 (20060101); H04L 12/403 (20060101); H04J 3/16 (20060101)
Field of Search: 370/474,449,428,349,471,337,347
PPP
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