Patent ID: 8542579
Filing Date: 2013-09-24
Classification: H04L

Abstract:
1. A method for cooperative transmission in wireless multi-hop networks, comprising the steps of: (a) forming a wireless multi-access system including a plurality N of source user nodes, each connected to a destination node N+1 via a respective wireless communication channel to unicast therethrough respective packets to said destination node N+1, wherein N is a number of the source user nodes in said plurality thereof, said number N=1, 2, 3, N−1, N, wherein said plurality N of the source user nodes include at least one source user node i generating at least one i-class packet and at least one source user mode j generating at least one j-class packet, where i=1, 2, . . . , N−1, and wherein j=i+1, i+2, . . . , N, and wherein said at least one source user node j, in addition to generating said at least one j-class packet is configured with capabilities to relay said at least one i-class packet, and (b) cooperatively operating said wireless multi-access system at a protocol layer level thereof by the steps of: (c) transmitting said at least one i-class packet from said at least one source user node i to said destination node N+1 via the wireless communicating channel i, (d) broadcasting acknowledgement (ACK) signal by at least one of said destination node N+1 and said at least one source user node j upon successful receipt of said at least one i-class racket of said at least one source user node i at a single time slot with said transmitting of said at least one i-class packet from said at least one source user node i, and (e) if said destination node N+1 fails to successfully receive said at least one i-class packet from said at least one source user node i, and if said at least one source user node j successfully received said i-class packet of said at least one source user node i, transmitting said at least one i-class packet from said at least one source user node j to said destination node N+1 via a wireless communication channel j of said at least one source user node j in lieu of said at least one j-class packet generated thereat, wherein said wireless communication channel j of said at least one source user node j has a higher successful delivery probability than said wireless communication channel i of said at least one source user node i.