Patent ID: 6243846
Filing Date: 2001-06-05
Classification: H03M,H04L

Abstract:
A method of communicating payload through a packet switched telecommunications network, said network including a first node and a second node, said payload defining a sequence of windows of k payload blocks, said sequence including a current window of k payload blocks and a subsequent window of k payload blocks, said method comprising, in combination:at said first node, generating p parity blocks by an encoding process comprised of functionally combining together the k payload blocks of the current window, wherein p.gtoreq.1, and wherein at least one of said p parity blocks comprises a cross-wise parity block derived as a function of said k payload blocks of said current window taken along an index-shifted path through said k payload blocks of said current window;piggy-backing said p parity blocks onto a number of payload blocks in the subsequent window;transmitting into the network the k payload blocks of the current window; andtransmitting into the network the k payload blocks of the subsequent window, whereby the k payload blocks of the subsequent window includes the p parity blocks.