Wireless network using network coding scheme based on overhearing channel
AssigneeSamsung Electronics Co., Ltd.
InventorChan Soo HWANG
Life of this patent
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Abstract
A wireless network using a network coding scheme is provided. The wireless network may include at least two source nodes, at least two destination nodes, and a relay node. The at least two source nodes may divide source messages into partial source messages, and transmit the partial source messages to the relay node. The relay node may generate a network-coded message using the network coding scheme. The at least two destination nodes may overhear the partial source messages using overhearing channels and obtain the source messages based on the received network-coded message.
Claims25
An operation method of a relay node, the method comprising:
- receiving a 1-1 partial source message and a 1-2 partial source message from a first source node, a first source message of the first source node including the 1-1 partial source message and the 1-2 partial source message;
- receiving a 2-1 partial source message and a 2-2 partial source message from a second source node, a second source message of the second source node including the 2-1 partial source message and the 2-2 partial source message;
- and
- transmitting a network-coded message to a first destination node corresponding to the first source node and a second destination node corresponding to the second source node, the network-coded message being generated based on the 1-1 partial source message and the 2-1 partial source message.
An operation method of a relay node, the method comprising:
- receiving a 1-1 partial source message and a 1-2 partial source message from a first source node, and receiving a 2-1 partial source message and a 2-2 partial source message from a second source node during a first time period, a first source message of the first source node including the 1-1 partial source message and the 1-2 partial source message, and a second source message of the second source node including the 2-1 partial source message and the 2-2 partial source message;
- extracting the 1-1 partial source message, the 1-2 partial source message, the 2-1 partial source message, and the 2-2 partial source message, using a Successive Interference Cancellation (SIC) scheme based on a decoding order with respect to the first source message and the second source message;
- and
- transmitting a network-coded message to a first destination node corresponding to the first source node and a second destination node corresponding to the second source node during a second time period, the network-coded message being generated based on the extracted 1-1 partial source message and 2-1 partial source message, and the second time period being different from the first time period.
A computer-readable recording medium storing a program for implementing an operation method of a relay node, the method comprising:
- receiving a 1-1 partial source message and a 1-2 partial source message from a first source node, a first source message of the first source node including the 1-1 partial source message and the 1-2 partial source message;
- receiving a 2-1 partial source message and a 2-2 partial source message from a second source node, a second source message of the second source node including the 2-1 partial source message and the 2-2 partial source message;
- and
- transmitting a network-coded message to a first destination node corresponding to the first source node and a second destination node corresponding to the second source node, the network-coded message being generated based on the 1-1 partial source message and the 2-1 partial source message.
Dependencies are inferred from the claim text.