Relay transmission system and method capable of adaptively selecting relay schemes
An adaptive selection and transmission system technology, applied in radio relay systems, active electrical relay systems, network traffic/resource management, etc. Self-adaptive selection of different relay modes and other issues to achieve the effect of improving throughput
Inactive Publication Date: 2015-03-04
宋清洋
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Problems solved by technology
[0006] At present, relevant research at home and abroad is only carried out on a single relay method, such as only on the traditional relay method or only on the network coding method, and does not consider the traditional relay method and the network coding method jointly.
In addition, existing relay devices on the market only support traditional relay methods and do not support network coding methods, and no one uses related devices to simultaneously support multiple relay methods for adaptive selection.
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[0054] The present invention will be further described below in conjunction with the drawings.
[0055] A relay transmission system for adaptively selecting a relay scheme, the system includes three radio devices, each radio device is composed of a general software radio device USRP and a computer; the above three radio devices are used as three nodes, Two of the nodes are used as source nodes A and B, and the other is used as a relay node R, and the two source nodes A and B perform relay communication through the relay node R, and the radio equipment used as the relay node is used for A device adapted to choose between two-way relay transmission without network coding or two-way network coding between streams for data transmission; the above two transmission methods are as follows: figure 1 and figure 2 As shown, in the two-way relay transmission mode without network coding, each node radio device includes a protocol header generation module, a protocol header analysis modu...
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The invention discloses a relay transmission system and a relay transmission method capable of adaptively selecting relay schemes, and belongs to the technical field of wireless communication. The system comprises three pieces of radio equipment. Each piece of radio equipment consists of a universal software radio peripheral (USRP) and a computer. The three pieces of radio equipment are used as three nodes, two nodes are source nodes, the other node is used as a relay node, and the source nodes perform relay communication through the relay node. The relay node can adaptively select a network encoding-free two-way relay transmission mode or an inter-stream network encoding two-way relay transmission mode. A plurality of relay modes suitable for a software radio platform is created, a plurality of relay transmission schemes are implemented on the software radio platform, and three types of services of data transmission, file transmission and video transmission can be supported. Throughput can be improved; and by the software radio platform, experimental data can be acquired and analyzed under an office condition.
Description
technical field [0001] The invention belongs to the technical field of wireless communication, and in particular relates to a relay transmission system and method for adaptively selecting a relay scheme. Background technique [0002] In wireless communication, as the communication distance increases, the attenuation of the wireless signal becomes more serious, which makes long-distance point-to-point direct communication unrealistic. In order to solve this problem and meet the data transmission and exchange between two nodes that are far apart, one or a series of nodes that can communicate directly with the two nodes at the same time can be found between the two nodes. Auxiliary communication, this communication method is called wireless relay. Wireless relay transmission has many advantages. It can expand the coverage of wireless networks, realize long-distance reliable communication, save wiring, and reduce costs. It has been widely used in mobile communications, wireless...
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IPC IPC(8): H04W28/06H04W48/20H04B7/15
Inventor 宋清洋黄洋庄建华崔亚运
Owner 宋清洋