Network transmission method and system of ultra wide band sensor
A technology of sensor network and transmission method, which is applied in the field of ultra-wideband sensor network transmission method and system, can solve the problem of limited number of nodes in the overall throughput of the network, and achieve the reduction of network throughput and cooperative diversity performance and cumulative transmission power loss , The effect of power loss distribution average
Active Publication Date: 2011-06-29
TSINGHUA UNIV
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Therefore, in a large-scale ultra-wideband sensor network, the overall throughput of the network will be limited due to the increase in the number of nodes in the network
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[0050] In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0051] The cooperative communication method based on complex domain network coding provided by the present invention is suitable for large-scale ultra-wideband sensor networks and other sensor networks with node self-location capabilities.
[0052] refer to figure 1 , shows a flow chart of Embodiment 1 of an ultra-wideband sensor network transmission method according to the present invention. In Embodiment 1 of the present invention, it is assumed that the UWB sensor network contains N information nodes {U 1 , U 2 ,...U N}, the data to be transmitted by each information node to the central node D are respectively {x 1 , x 2 ,...x N}. The method comprises the steps of:
[0053] Step 101, obtaining the distance from each inf...
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The invention provides a network transmission method and system of an ultra wide band sensor. The method comprises the following steps: acquiring the distances from various information nodes to a central node; grouping the information nodes according to the distances from the information nodes to the central node so as to obtain groups Gn, wherein n is larger than or equal to 1 and less than or equal to P, P is the number of groups, the distances from the information nodes to the central node are closer if n is bigger; according to a complex field network encoding mode, broadcasting the data of the information nodes in the group G1 to the other groups and the central node; and according to the complex field network encoding mode, aiming at the rest (P-1) groups Gn besides the group G1, successively transmitting grouping data in a n-gradually incremental sequence; and decoding the data which is received by the central node and sent by various groups, and acquiring the judgment result of data transmission. According to the invention, time slot number required by transmission is reduced, and the transmission efficiency of the network is improved.
Description
technical field [0001] The invention relates to the technical field of network data transmission, in particular to an ultra-wideband sensor network transmission method and system. Background technique [0002] Ultra-wideband technology has the advantages of low power consumption, high transmission rate, and accurate distance measurement. It is currently widely used in wireless multimedia transmission, sensor networks, and other application scenarios. In order to improve the life time of sensor networks with self-localization capabilities such as ultra-wideband sensor networks, a “cooperative-cast” scheme based on linear network coding is proposed in the prior art. In this prior art solution, there are N users (U 1 , U 2 ... U N ) to transmit the collected information to the central node D. Without loss of generality, let U 1 to U N The distance from the center node D decreases in turn, that is, U 1 farthest from D, and U N closest to D. In this transmission scheme, ...
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Login to View More IPC IPC(8): H04W28/06H04W48/10H04L1/00H04B7/06
Inventor 葛宁耿春华裴玉奎朱亮
Owner TSINGHUA UNIV