Distributed Node Power Control Method in Mobile Ad Hoc Networks

A mobile self-organizing and distributed node technology, applied in the field of network communication, can solve the problems of affecting the efficiency of power adjustment, slow convergence of power adjustment, and not considering the decisive influence of communication distance, so as to avoid avalanche effect, avoid specificity, and improve survival Effect of cycle time and communication quality

Inactive Publication Date: 2015-12-02
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The above methods balance the energy consumption between nodes to a certain extent, but they do not consider the decisive influence of communication distance on power, which leads to the slow convergence of power adjustment to the final value, which greatly affects the efficiency of power adjustment.

Method used

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  • Distributed Node Power Control Method in Mobile Ad Hoc Networks
  • Distributed Node Power Control Method in Mobile Ad Hoc Networks
  • Distributed Node Power Control Method in Mobile Ad Hoc Networks

Examples

Experimental program
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Embodiment

[0025] Embodiment: The present invention provides a distributed node power control method in a mobile ad hoc network, which is carried out according to the following steps:

[0026] (1) The new node successfully joins the mobile ad hoc network, and calculates its own initial communication radius according to the obtained area size and number of nodes in the current network: Among them, a and b are the length and width of the rectangular area of ​​the mobile ad hoc network respectively, P r for a given probability.

[0027] The schematic diagram of mobile ad hoc network with rectangular topology is as follows: figure 1 As shown, there are n nodes that have joined the network. When a new node joins the mobile ad hoc network, the node will send an application to the management node in the current network and join the mobile ad hoc network after passing the verification. At this time, the node will obtain relevant information about the current mobile ad hoc network area from th...

Embodiment

[0031]Implementation example: For a newly joined node with an initial communication distance of 20m and a transmission rate of 10Mbps, its initial transmit power should be set to

[0032] P=(50*10 -9 +100*10 -12 *20 2 )*(10*1024 2 ) = 0.9W.

[0033] The derivation method of the transmit power calculation formula is:

[0034] The new node calculates and sets its own transmission power according to the transmission power calculation formula. The calculation formula is as follows: E Tx (k,d)=E elec *k+ε amp *k*d 2 , which represents the transmission energy required by the node to send a kbit data packet under the condition that the distance is d. where E elec *k represents the energy consumed by the circuit drive, E elec Indicates the radio consumption, the general value is 50nJ / bit. ε amp *k*d 2 Indicates the energy required to transmit a kbit data packet over a long distance d, ε amp is a coefficient, its value is generally 100pJ / bit / m 2 .

[0035] The signal ba...

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Abstract

The invention discloses a distributed node power control method in a mobile ad hoc network. The distributed node power control method comprises the following steps that: (1) a new node is successfully added in the mobile ad hoc network and calculates an initial communication radius per se; (2) the new node calculates and sets an emitting power per se, wherein the emitting power P=(Eelec+epsilon amp*d<2>)*B; (3) the new node sends a broadcast message; (4) other nodes in the mobile ad hoc network receive the broadcast message of the new node, and send a return message to the new node, wherein the return message comprises the content that whether a Flag 3 of the emitting power of the new added node is regulated or not; and (5) the new node receives the return message, if the Flag 3 is not equal to 1, the communication radius in the step (1) is finely tuned to be d-delta d, the steps (2), (3), (4) and (5) are executed again in sequence, and if the Flag 3 is equal to 1, the powers of the nodes in the mobile ad hoc network can be tuned. According to the distributed node power control method, the powers of the nodes can be rapidly converged to final values, the power control efficiency is ensured, the communication of a network is also guaranteed, and the life cycle of the network is prolonged.

Description

technical field [0001] The invention relates to a distributed node power control method, in particular to a distributed node power control method based on the nearest neighbor probability in a mobile ad hoc network, and belongs to the technical field of network communication. Background technique [0002] The mobile ad hoc network is composed of a group of mobile nodes (terminals), and is a network technology that realizes the interconnection between nodes through automatic discovery, automatic maintenance of network topology and multi-hop routing and forwarding mechanism. The battery power of these mobile nodes is limited. In order to prolong the working time (life cycle) of the nodes, it is often necessary to reduce their transmission power as much as possible to reduce energy consumption. However, the signal transmission distance of a node depends on its transmission power. The limited transmission distance makes the routing of the mobile ad hoc network need to be realize...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W52/28H04W84/18
CPCY02B60/50
Inventor 陶军朱利旻刘莹肖鹏
Owner SOUTHEAST UNIV
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