Cross-layer optimizing method for maximizing lifetime of wireless sensor network under constraint of timeliness
A wireless sensor network, cross-layer optimization technology, applied in wireless communication, data exchange network, transmission control/balance and other directions, can solve problems such as inapplicability, improve service life, ensure timeliness, good economic benefits and The effect of the application foreground
Inactive Publication Date: 2009-03-25
SHANGHAI JIAO TONG UNIV +1
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[0006] The purpose of the present invention is to propose a wireless sensor network life cycle under the constraints of timeliness in order to solve the problem that the traditional method of improving network energy efficiency is no longer applicable due to the growing demand for real-time applications in wireless sensor networks. Maximize the cross-layer optimization method to effectively guarantee the timeliness of data packet transmission, while improving network energy efficiency and network life cycle, so as to meet the needs of wireless sensor network business development with high real-time requirements
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[0017] The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and embodiments. The following examples are not intended to limit the present invention.
[0018] In one embodiment of the present invention, the scene is a multi-hop topology consisting of 16 nodes and a sink node, such as figure 1 shown. Among them, node 0 is the sink node, which is set in the center of the area. The possible paths from each node to the destination node are shown in the table:
[0019] Table 1 Node optional paths
[0020] node number optional path 1 1-12-0，1-13-0 2 2-13-0 3 3-13-0，3-14-0 4 4-14-0 5 5-14-0 6 6-5-14-0，6-15-0 7 7-15-0，7-16-0 8 8-16-0，8-11-0 9 9-11-0 10 10-11-0，10-12-0 11 11-0 12 12-0 13 13-0 14 14-0 15 15-0 16 16-0
[0021] 1) Implementation stage of path optimal power control scheme:
[0022] The routing update t...
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The invention relates to a cross-layer optimization method for achieving maximization of life period of a wireless sensing network under the restriction of time effectiveness. The method comprises the following steps: transmitting information of surrounding wireless channels to sink nodes by adding information bits in an update packet by each node in a period of one route updating period; carrying out optimization calculation under the restriction condition of a certain path retransmission number of the sink node for each optional path from each node to the sink node to obtain the optimized emission power of each node on each path so as to achieve least energy consumption on each path; calculating the path use proportion of the optimally distributed paths for each optional path of each node on the basis to achieve maximization of the life period of the network; and transmitting the optimal result to each node by the sink node through a route update confirm packet. The method can greatly improve the network life while ensuring the time effectiveness of the network data packet, and has the advantages of real-time channel tracking, low overhead, easy implementation, and considerable economic benefits.
Description
technical field [0001] The invention relates to a cross-layer optimization method for maximizing the lifetime of a wireless sensor network under timeliness constraints, which is used to ensure the timeliness of data packet transmission, has good energy efficiency and network lifetime, and is especially suitable for real-time business Wireless sensor network services with high security requirements. Background technique [0002] In recent years, with the continuous development of technologies such as sensors, wireless communications, and embedded systems, the research on wireless sensor networks is also gradually deepening. The nodes of the wireless transmitter network are generally powered by batteries. Compared with the traditional Ad hoc network, the wireless transmitter network has more stringent requirements on the energy consumption of the nodes, so maximizing the lifetime of the network is a priority for network designers. The problem. Many research institutions at h...
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IPC IPC(8): H04L29/08H04L12/56H04B7/005H04W24/02
CPCY02D30/70
Inventor 何晨罗俊蒋铃鸽田军林强
Owner SHANGHAI JIAO TONG UNIV