Patent ID: 7701893

Claim:
A method for distributing identical information content to a plurality of mobile stations located in a geographical area of a mobile network, comprising: generating a first sequence of data blocks carrying said information content; performing an outer code encoding of said first sequence of data blocks, so as to obtain a second sequence of data blocks; transmitting the second sequence of data blocks to said mobile stations; receiving from said mobile stations, negative acknowledgements related to at least one incorrectly received data block of said second sequence; conditionally re-transmitting said at least one incorrectly received data block of said second sequence based on a number of said negative acknowledgements, wherein said conditionally re-transmitting comprises: receiving, from said mobile stations, a number of positive acknowledgements related to a correct outer code decoding of said second sequence of data blocks; and disabling re-transmission of said at least one incorrectly received data block of said second sequence upon reception of said number of positive acknowledgements; and modifying parameters of said outer code encoding based on said number of said received negative acknowledgements, wherein said modifying of the parameters of said outer code encoding comprises changing a number of parity blocks in subsequent sequences upon reception of a plurality of numbers of negative acknowledgements corresponding to a plurality of incorrectly received data blocks of said second sequence, each of said plurality of numbers of negative acknowledgements being compared to a first predetermined threshold.