Patent ID: 8364075

Claim:
Wireless relay apparatus for receiving a source data message and for transmitting a relay data message based on the source data message, comprising: a transmitter section and a receiver section; and a controller configured for determining, whether the wireless relay apparatus will, when operating as a wireless relay apparatus, provide a transmission channel from a wireless source apparatus to a wireless destination apparatus via the wireless relay apparatus, which is better than a direct transmission channel from the wireless source apparatus to the wireless destination apparatus or for determining, whether the wireless destination apparatus necessitates a relay operation or does not necessitate a relay operation; configured for storing the source data message from a wireless source apparatus only when the transmission channel via the wireless relay apparatus is better than the direct transmission channel or when a relay operation is necessitated, and for not storing the source data message in the other case; and configured for controlling the transmitter to transmit the relay data message, the relay data message being based on the stored source data message, wherein a cooperative clear to send message received comprises a channel condition estimate on the direct transmission channel between the wireless source apparatus and the wireless destination apparatus, and wherein the controller is configured for extracting the channel condition estimate from the cooperative clear to send message received to acquire a direct channel information, wherein the controller is configured for determining a relay channel information for the transmission channel from the wireless source apparatus via the wireless relay apparatus to the wireless destination apparatus, and wherein the controller is configured for comparing the direct channel information and the relay channel information to determine, whether the wireless relay apparatus will provide a better transmission channel.