Method for updating low-power dissipation system compressed by difference in wireless sensor network application

A wireless sensor and network application technology, applied in transmission systems, electrical components, sustainable buildings, etc., can solve problems such as code updates, achieve short update delays, reduce the amount of transmitted data, and ensure transmission and update reliability Effect

Inactive Publication Date: 2008-07-30
BEIHANG UNIV
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Problems solved by technology

[0006] The purpose of the present invention is: to overcome the execution code update problem of the existing wireless sensor network application system, to provide a low-power system update method using differential compression in the wirele

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  • Method for updating low-power dissipation system compressed by difference in wireless sensor network application
  • Method for updating low-power dissipation system compressed by difference in wireless sensor network application
  • Method for updating low-power dissipation system compressed by difference in wireless sensor network application

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Embodiment Construction

[0029] The invention is a low-power consumption system update method using differential compression in wireless sensor network applications. As shown in Figure 1, the technical solution of the present invention is mainly divided into three steps:

[0030] 1. Divide the old code file and the new code file into multiple pages.

[0031] Let the old code file size be S o bytes, its page number P o The calculation rule is: the S o Divisible by L, if the remainder is zero, then P o is equal to the divisor, otherwise P o It is equal to the divisor plus 1; among them, the content of the mth page is represented by the symbol p o (m) said. Similarly, set the size of the new code file as S n bytes, whose pages are P n , where the content of the mth page is represented by the symbol p n (m) said.

[0032] As shown in Figures 2a and 2b, the size of the old code file is 12K bytes, the size of the new code file is 16K bytes, and the page capacity is 2K bytes. The old and new code f...

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Abstract

An updating method for low power dissipation systems is disclosed, which uses differential compression in the application of wireless sensor network. The method includes the following steps: (1) dividing an old code file and a new code file into a plurality of pages which are bytes of a section of continuous addresses; (2) comparing the old code file with the new code file to generate a differential code file; (3) transmitting the differential code file to an updated node from the publishing node in a multi-hop communication way; (4) the updated node re-generates a new code file according to the differential code file and the old code file to complete the updating. The invention has advantages of good generality, short update delay, less data transmission, high energy consumption efficiency and perfect reliability.

Description

technical field [0001] The invention belongs to the field of wireless sensor networks, in particular to a low-power system update method using differential compression in wireless sensor network applications. Background technique [0002] Wireless Sensor Networks (WSN for short) is a new computing and communication technology. WSN integrates sensor technology, embedded computing technology, distributed information processing technology and communication technology to collaboratively monitor, perceive and collect information of various environments or monitoring objects in the network distribution area in real time. [0003] WSN applications usually require the deployment of a large number of unattended sensor nodes in the monitoring area. This node deployment method brings problems to the update of the application system: when debugging programs or application requirements change, it is not advisable to retrieve a large number of nodes and re-burn them into the new applicat...

Claims

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Application Information

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IPC IPC(8): H04L29/08
CPCY02B60/50
Inventor 吴威王春平尚涛周忠赵沁平
Owner BEIHANG UNIV
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