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Beijing University of Posts and Telecommunications

Fangxiang Wang

Kan Zheng

Hang Long

The present invention discloses a method and device for controlling a relay transmission based on non-reproduction relay mode, comprising: each relay node within a service area to which a source node belongs obtaining channel status information between itself and the source node and channel status information between itself and a destination node, calculating required channel information for relay selection and feeding the required channel information back to the source node; after receiving channel information sent by the relay nodes, the source node, according to the channel information, selecting from the relay nodes a group of relay nodes with greatest feedback values in the channel information to forward information and selecting a group of relay nodes with second greatest feedback values to send interference information, selected relay nodes transmitting information to the destination node in cooperation with the source node in non-reproduction relay mode. By means of the method for controlling a relay transmission based on non-reproduction relay mode of the present invention, while greatly reducing network signaling load and computation complexity, the system secrecy capacity is ensured, the performance-to-cost ratio is high, and stronger applicability is achieved.

Method and device for controlling relay transmission based on non-reproduction relay mode

The present invention discloses a method for uplink multi-user cooperation communication, including a first, and a second source node and a target node. When transmitting a signal to the target node, the first source node also transmits the signal to the second source node, the second source node changing to a relay node of the first source node and forwarding the signal to the target node; the target node obtains its reception Signal Noise Ratio (SNR) by using a maximal ratio combining mode according to the signal directly transmitted from the first source node and the signal forwarded from the second source node, sets a precoding policy according to the reception SNR, and selects the optimal precoding as a precoding vector which is used when the first source node transmits a signal to the target node.

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Beijing, China

Fangxiang Wang