Abstract: Within a communication system having redundant routers, datagrams are forwarded from source communication devices to target communication devices via routers based on routing information stored in routing tables of the routers, wherein for each communication terminal, a virtual router is configured as a default gateway, to which virtual router a group of a plurality of routers is assigned, where routers from the same group assigned to a virtual router select from among themselves a router operated as the active default gateway, the routers not operated as the active default gateway are operated as reserve gateways, and where the active default gateway in question transmits, only upon a request for stored address assignments that is received from a reserve gateway, all stored address assignments to a requesting reserve gateway in bundled form.

Abstract: The present invention is related to a method for data transmission between a transmitter station and a receiver station of a communication system, especially a wireless communication system, employing a transmission scheme based on the principle of receiver orientation, wherein for the generation of low energy transmit signals within the transmitter station expanded landings on multiple representatives of the complex plane are used and wherein each one of the expanded landing is arranged within an expanded domain of the complex plane. The present invention further relates to a transmitter station and a communication system.