A wireless relay deployment method based on network coding
A wireless relay and network coding technology, applied in wireless communication, network planning, electrical components, etc., to achieve the effect of improving the probability of interruption, reducing complexity, and wide applicability
Active Publication Date: 2016-01-20
句容汇杰商业贸易有限公司
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[0006] Therefore, in the field of existing wireless network coding, there is almost no reference to how to implement effective relay deployment, and relay deployment has practical significance for improving the outage probability performance of the system and improving the effectiveness and reliability of the cooperative diversity system
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[0034] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0035] control figure 1 , in a wireless network including a base station BS, a relay node R, and several user nodes, the deployment of the relay node R for any two user nodes U1, U2 is mainly as follows: firstly, a plane coordinate system is established, and the plane coordinate system is based on a The user node U1 or U2 is the origin, and the connection between the origin and the base station BS is the X axis; then the coordinate values of the base station BS and another user node U2 or U1 other than the origin are normalized; then by Two-dimensional search of the triangular region formed by U1, U2 and BS to obtain the approximate bounds of outage probability Relay coordinates at minimum hour , is the best deployment position of the relay; that is,
[0036] ,
[0037] Finally, restore the coordinates by normalizing for the act...
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The invention relates to a wireless relay arrangement method based on a network code. The network comprises a base station (BS), relay nodes (R) and a plurality of user nodes. Arrangement of a relay node (R) of any two user nodes (U1, U2) comprises the steps of regarding the user node U1 or the user node U2 as an origin, regarding a line connecting between the origin and the BS as an X axis, building a plane-coordinate system, processing coordinate values of the BS and another user node U2 or U1 in the plane-coordinate system in a normalization mode, wherein the another user node U2 or U1 is not arranged on the origin, obtaining the corresponding coordinate values, searching relay coordinates when outage probability approximate limit is minimum through two-dimensional search in a triangle area formed by the U1, the U2 and the BS, restoring the coordinates to be practical coordinates through normalized restoration, and obtaining the optimum relay node R. The wireless relay arrangement method based on the network code has the advantages of being capable of obtaining the coordinates of the optimum relay arrangement, thereby being capable of effectively improving an outage probability property of the system, reducing complexity of coordinate arrangement and being wide in applicability.
Description
technical field [0001] The present invention relates to wireless digital communication technology, in particular to a wireless relay deployment method based on network coding. Background technique [0002] The idea of network coding was first proposed in the document "Network information flow" published by Ahlswede et al. in "IEEE Transaction on Information Theory" in 2000. From the perspective of information theory, they strictly proved that in a point-to-multipoint communication network, through nodes The encoding method can make the information transmission rate reach the maximum flow of the network, so the encoding method is better than the routing method. With the deepening of the research, the recent application of the idea of network coding to the wireless communication system has gradually attracted people's attention. The use of network coding in wireless communication networks can not only improve the information transmission rate, save the energy required for...
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IPC IPC(8): H04W16/18
Inventor 季彦呈章国安包志华徐晨张士兵袁红林邱媛媛
Owner 句容汇杰商业贸易有限公司