Patent ID: 8243649
Filing Date: 2012-08-14
Classification: H04B

Abstract:
1. A method for transmitting a packet in a relay network including a source node, a relay node and a destination node, comprising: partitioning, in a source node of a relay network, a packet into a first fragment and a second fragment, wherein the packet has L bits and the first fragment has βL and the second fragment has (1−β)L bits, where β is a splitting ratio; transmitting the first fragment from the source node to a relay node of the relay network at a first data rate during a first phase; transmitting the second fragment from the source node to a destination node in the relay network at a second data rate during a second phase; combining the first fragments and the second fragment in the destination node; retransmitting the first fragment from the relay node to the destination node at a third data rate during the second phase; and optimizing the first, second and third data rates so that a total energy consumption in the network is minimized, wherein P where R rd-mpr is the third data rate and R sd-mpr is the second data rate.