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:
Jul. 21, 2009
Filed:
Oct. 19, 2001
Arnab Das, Old Bridge, NJ (US);
Farooq Ullah Khan, Manalapan, NJ (US);
Ashwin Sampath, Somerset, NJ (US);
Hsuan-jung Su, Ocean, NJ (US);
Arnab Das, Old Bridge, NJ (US);
Farooq Ullah Khan, Manalapan, NJ (US);
Ashwin Sampath, Somerset, NJ (US);
Hsuan-Jung Su, Ocean, NJ (US);
Alcatel-Lucent USA Inc., Murray Hill, NJ (US);
Abstract
An adaptive incremental redundancy (i.e., Hybrid ARQ) method is described for retransmitting information in a communication channel of a wireless communication system. More specifically, code multiplexing is used within fixed length frames in order to change the number of codes, modulation, and coding on retransmissions to provide the desired redundancy for successful decoding. The operation of adaptive Hybrid ARQ in the code domain also provides finer granularity in which to efficiently transmitting redundancy. In one illustrative embodiment, a method for retransmitting information in a communication channel having a plurality of fixed length frames each divided into a plurality of time slots of equal duration includes the step of code multiplexing a retransmission of a previous transmission within one of the fixed length frames using one or more of a plurality of codes. The number of codes used for the retransmission is variable based on the condition of the communication channel.