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Link power, rate and load length control method applicable to wireless Mesh network

A technology of load length and control method, applied in power management, wireless communication, network traffic/resource management, etc., can solve the problems of wasting bandwidth and energy resources, increasing network overhead, reducing network utility, etc.

Active Publication Date: 2016-07-27
SOUTHEAST UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The above algorithms have played a role in reducing the transmission power and adjusting the rate to a certain extent, but the first type of method will increase the network overhead and reduce the utility of the entire network by introducing the RTS-CTS handshake; the second type of method through the cross-layer The optimization method maximizes the network utility, but it also leads to a certain degree of waste of bandwidth and energy resources
Furthermore, both methods do not take into account the impact of payload length on network utility and energy consumption

Method used

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  • Link power, rate and load length control method applicable to wireless Mesh network
  • Link power, rate and load length control method applicable to wireless Mesh network
  • Link power, rate and load length control method applicable to wireless Mesh network

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Embodiment

[0091] The method for adaptively adjusting the transmission rate, load and transmission power applicable to the wireless Mesh network of the present invention is simulated under MATLAB, and the scene diagram is shown in figure 1 , including the following steps:

[0092] 1) Scene setting: 30 nodes are randomly distributed in the wireless Mesh network, and the source node 21 is set to send data to the destination node 1, assuming that the link 21→27→16→8→23→20→1 is the routing selection link. The farthest single-hop transmission distance of the node is set to 796m, and the specific parameters are shown in Table 1.

[0093] Table 1 Simulation parameters

[0094]

[0095] 2) Each node maintains a path loss matrix G. The node obtains the distance between nodes in the link through the Beacon frame, and uses the transmission model power rx =power tx d -α Calculated, where d is the link length, and α is the path attenuation index.

[0096] 3) The source node obtains the powe...

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Abstract

The invention discloses a link power, rate and load length control method applicable to a wireless Mesh network. The method comprises following steps of firstly, solving a Lagrange objective function corresponding to an energy-saving network utility maximization problem, thus obtaining calculation formulae of a rate and a frame length; solving by applying a gradient method, thus obtaining the iterative formula of a power; then, converting the energy-saving network utility maximization problem into a dual problem; decomposing into two sub-problems according to a source node and a link; carrying out distributed solution, obtaining the iterative formulae of the Lagrange multipliers; finally, collecting and broadcasting the Lagrange multipliers by codes; calculating a Signal to Noise Ratio and a link capacity; updating the rate, the frame length and the power until an error condition is satisfied. Compared with other methods, the method has the advantages that the network utility and energy consumption are associated by establishing and solving a method for solving a convex optimization problem, the network utility is taken into consideration, and the energy is saved to the greatest extent.

Description

technical field [0001] The invention belongs to the research field of wireless communication technology, and in particular relates to a method for controlling link power, rate and load length applicable to a wireless Mesh network. Background technique [0002] The wireless mesh network, also called the wireless mesh network, is a new type of wireless mobile communication technology. Compared with traditional WLAN, wireless Mesh deployment is simple, only need to be connected to the power supply; larger coverage is obtained through node multi-hop and data forwarding; the characteristics of wireless communication determine its high bandwidth characteristics. Wireless Mesh network has become a research hotspot in recent years because of its broad application prospects and outstanding advantages. Like the AdHoc network, the mobility of the wireless Mesh network makes the energy consumption an important obstacle restricting its application and development. [0003] At present, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W28/08H04W52/02H04W52/26
CPCH04W28/08H04W52/0206H04W52/267Y02D30/70
Inventor 王捷李磊陈灿粟勇范鹏博毕明勇
Owner SOUTHEAST UNIV
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