Heuristic calculation method of linear programming formula of wireless sensor network
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A wireless sensor, linear programming technology, applied in the direction of network planning, network topology, wireless communication, etc., can solve the problem of not forming a unified framework structure, not fully considering the deployment of sensor nodes, etc.
Inactive Publication Date: 2016-05-11
HEILONGJIANG UNIV
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[0005] The purpose of the present invention is to solve the problem that researchers often only take a targeted solution to a certain aspect of wireless sensor network energy consumption, and do not fully consider the problems of sensor node deployment, node scheduling, mobile anchor nodes and data routing, There is no problem of forming a unified framework structure, and the proposed heuristic calculation method of linear programming formula for wireless sensor network
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specific Embodiment approach 1
[0046] Embodiment 1: The heuristic calculation method of the wireless sensor network linear programming formula in this embodiment is specifically prepared according to the following steps:
[0047] Step 1. Assuming that there are K points in the wireless sensor network, in each time period t in the wireless sensor network lifetime T, select P nodes from K to arrange anchor nodes to obtain the number of anchor nodes as shown in formula (5) Show:
[0048] Σ θ ∈ N z θ t = P , t ∈ T - - - ( 5 )
[0049] Among them, z θt Indicates whether there is an anchor node at point θ in period t; z θt ∈ {0,1}, when z θt When it is 1, there is an anchor node deployment at point θ in period t, z θt When ...
specific Embodiment approach 2
[0082] Specific implementation mode two: the difference between this implementation mode and specific implementation mode one is: the flow balance equation in step two is specifically:
[0083] Σ m ∈ R Σ j : i ∈ S j m x j s i r t + h r a i r t = Σ θ ∈ N i r y i r ...
specific Embodiment approach 3
[0085] Specific embodiment three: the difference between this embodiment and specific embodiment one or two is: in step three, according to the energy consumption value f of the sensor ir Calculate the upper limit of the total energy consumption of the sensor as B, as shown in formula (7):
[0086] Σ i ∈ S Σ r ∈ R f i r p i r ≤ B - - - ( 7 )
[0087] Among them, E r The constraints to be met are:
[0088] f i r = Σ t ∈ T ...
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Abstract
This invention discloses a heuristic calculation method of a linear programming formula of a wireless sensor network, and relates to the heuristic calculation method. This invention aims to solve the problem that a sensor node placement, a node scheduling arrangement, a mobile anchor node and a data route are not completely considered so that a uniform frame structure is not formed, and thus provides the heuristic calculation method of the linear programming formula of the wireless sensor network. The method is realized by the following steps: 1, building a wireless sensor network model; 2, calculating the total amount of data transmission in the wireless sensor network model according to a flow balance equation; 3, calculating an upper limit value of the total energy consumption of the wireless sensor network as B; 4, acquiring a network lifetime as shown in the description; 5, acquiring sensor position information; 6, acquiring qirt of the sensor; 7, calculating the position of the anchor node and an information subproblem S3 of the data route; 8, calculating the network lifetimes L2 and L3; 9, acquiring the network lifetime (as shown in the description) of the S3; 10, acquiring the network lifetime as shown in the description; and so on. The method provided by this invention is applied to the field of heuristic calculation.
Description
technical field [0001] The invention relates to a heuristic calculation method of a network linear programming formula, in particular to a heuristic calculation method of a wireless sensor network linear programming formula. Background technique [0002] With the development of wireless sensor network technology and its wide application in various fields, all walks of life are full of expectations for the development of sensor networks, and related research in the field of wireless sensor networks has become one of the research hotspots in the world today. Since sensor nodes are usually powered by batteries with very limited energy, the battery energy of sensor nodes directly determines the network life. [0003] When the failure nodes in the network reach a certain proportion, the entire network will be paralyzed and become unusable, and the entire network may need to be redeployed. Sometimes the failure of some important key nodes may also affect the effective transmissio...
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