Device and method for node synergy

A node and parent node technology, applied in the field of node coordination methods and devices, can solve problems such as reducing energy efficiency and energy waste, and achieve the effect of improving energy efficiency and network reliability

Active Publication Date: 2013-04-03
INST OF MICROELECTRONICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When crosstalk occurs, energy is wasted as non-forwarding nodes also listen to packets
In particular, when a large number of subnodes have the same wakeup / sleep duty cycle, and the wakeup / sleep frequency is the highest frequency among all subnodes, then over-listening will occur during packet forwarding, and due to over-listening The resulting crosstalk problem will be more serious and cause more energy waste, reducing the effectiveness of energy

Method used

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  • Device and method for node synergy
  • Device and method for node synergy
  • Device and method for node synergy

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] see figure 1 , which is a method flowchart of a node coordination method disclosed in Embodiment 1 of the present invention, including the following steps:

[0033] Step 101: the child node is associated with the parent node;

[0034] Step 102: the child node obtains the confirmation frame of the parent node, and the confirmation frame includes the wake-up / sleep cycle of the parent node and the wake-up time length of the parent node;

[0035] Step 103: When the child node sends data to the parent node, calculate the time distance between the current moment and the start moment of the wake-up period in the nearest wake-up / sleep cycle of the parent node;

[0036] Step 104: judging whether the time distance is less than the time length allowed for transmission, the time length allowed for transmission is the wake-up time length of the parent node;

[0037] Step 105: If yes, then directly send the data packet to the parent node;

[0038] Step 106: Otherwise, cache the da...

Embodiment 2

[0053] The node coordination method described in Embodiment 1 can achieve node synchronization and reduce network energy waste, but there are some problems in the accuracy of node synchronization and the effectiveness of data transmission, mainly due to clock deviation, and Data transmission delay and other issues, in order to solve the above problems, the present invention provides another node coordination method, for details, please refer to figure 2Another node coordination method shown specifically includes the following steps:

[0054] Step 201: Associate the child node with the parent node;

[0055] Step 202: the child node obtains the confirmation frame of the parent node, and the confirmation frame includes the parent node's wakeup / sleep cycle, wakeup time period and start time of the next natural wakeup cycle.

[0056] Step 203: When the child node sends data to the parent node, calculate the time distance between the current moment and the start moment of the wake...

Embodiment 3

[0072] In order to describe a node collaboration method provided by the present invention in more detail, the following is a specific node collaboration scenario as an example to describe, for details, please refer to image 3 , a method flowchart of another node coordination method, specifically including:

[0073] Step 301: Associate the child node with the parent node;

[0074] Step 302: the child node obtains the confirmation frame of the parent node, and the confirmation frame includes the wake-up / sleep cycle of the parent node, the length of wake-up time and the start time of the next natural wake-up cycle;

[0075] Step 303: When the child node sends data to the parent node, calculate the time distance between the current moment and the start time of the wake-up period in the nearest wake-up / sleep cycle of the parent node;

[0076] Step 304: According to the influence of the clock deviation and the transmission delay on the calculation accuracy, adopt 25% redundancy, a...

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Abstract

An embodiment of the invention discloses a device and a method for node synergy. The method includes: associating a child node with a father node; enabling the child node to acquire a father node acknowledgement frame containing father node wakeup / sleep cycle and father node wakeup time duration; when the child node sends data to the father node, calculating the time distance between the current moment and the starting moment of the wakeup time interval in the latest father node wakeup / sleep cycle; judging whether the time distance is smaller than a transmission allowed time length or not, wherein the transmission allowed time length is the length of the wakeup time interval in the father node wakeup / sleep cycle; and if yes, directly sending data packets to the father node. The downlink acknowledgement frame is used for information interaction, node synergy is realized by a small quantity of protocol control frames, and accordingly energy efficiency and network reliability are greatly improved.

Description

technical field [0001] The invention relates to the field of mobile communication, in particular to a node coordination method and device. Background technique [0002] A wireless sensor network is a multi-hop wireless communication network formed by a large number of sensor nodes in a wireless communication manner. Wireless sensor network has the characteristics of low power consumption, low cost, distributed and self-organizing, and has been widely used in military, environmental detection, medical treatment and smart home. [0003] In order to achieve precise perception of environmental information and ensure the effectiveness of node energy, collaborative sensing and data transmission between nodes has become one of the hot issues in sensor network research. [0004] A large amount of protocol control data needs to be exchanged between nodes in the existing wireless sensor network, so as to realize the coordination between nodes. The existing technology generally adopt...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W28/16H04W52/02
CPCY02B60/50Y02D30/70
Inventor 段蒙陈岚吕超
Owner INST OF MICROELECTRONICS CHINESE ACAD OF SCI
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