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Wireless sensor network protocol based on institute of electrical and electronic engineers (IEEE) 802.15.4

A wireless sensor and network protocol technology, applied in the field of communication, can solve problems such as complexity, difficulty in implementation, and increased node cost, and achieve the effects of low power consumption of nodes, simple structure, and definite communication time

Inactive Publication Date: 2012-04-04
SHANGHAI INST OF PROCESS AUTOMATION & INSTR
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, these protocols are complex and difficult to implement, which will lead to an increase in node costs

Method used

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  • Wireless sensor network protocol based on institute of electrical and electronic engineers (IEEE) 802.15.4
  • Wireless sensor network protocol based on institute of electrical and electronic engineers (IEEE) 802.15.4
  • Wireless sensor network protocol based on institute of electrical and electronic engineers (IEEE) 802.15.4

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Embodiment Construction

[0014] Such as figure 1 Shown is a network topology diagram of a wireless sensor network protocol based on IEEE 802.15.4. A PAN wireless short-range local area network 10 involved in the present invention includes two types of equipment, a central coordinator 100 and terminal nodes 101-10n, wherein the central coordinator 100 is responsible for the establishment of the network, and sends Beacon beacon frames as a clock source. The terminal nodes 101-10n form a star network with the central coordinator 100, establish a connection with the central coordinator 100 through a single hop, and realize two-way transmission of wireless data. No direct connection can be established between the terminal nodes 101-10n. The central coordinator 100 also acts as an external gateway of the wireless local area network 10 , and realizes data interaction with an upper layer network or system 111 through a wired or wireless interface 110 . In this way, the wireless data from the terminals 101~...

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Abstract

The invention relates to a wireless sensor network protocol based on institute of electrical and electronic engineers (IEEE) 802.15.4. A central coordinator and at least one terminal node form a star network, each terminal node establishes connection with the central coordinator through a single hop to realize dual-way transmission of wireless data, each terminal node and the central coordinator are in line with a communication protocol, a communicated superframe comprises a plurality of time slots with equal set time, a first time slot when the superframe starts is a beacon frame when the central coordinator starts to broadcast to outside, time synchronization among the terminal nodes in a network is realized by monitoring the beacon frame, thereafter the terminal nodes realize dual-way communication with the central coordinator in two pre-distributed adjacent time slots according to a time sequence, the terminal nodes are in dormant and waiting states after communication and wait for being woken by an initial beacon frame of the central coordinator. The wireless sensor network protocol has the advantages of simple structure, dual-way data transmission, high reliability, determined communication time and the like, the packet transmission rate is high, and the power consumption of the nodes is low.

Description

technical field [0001] The invention relates to a communication technology, in particular to a wireless sensor network protocol based on IEEE 802.15.4. Background technique [0002] At present, the industrial wireless sensor network mainly adopts the Zigbee protocol based on IEEE 802.15.4. This protocol has the advantages of simple structure, strong networking ability, low power consumption, etc., and has been widely used in various fields. However, since each chip and protocol stack provider implements the IEEE 802.15.4 and Zigbee protocols differently, they often cannot realize intercommunication and interconnection with each other. Even for the same provider, depending on the application, the network topology and data sending and receiving modes are different. [0003] Due to the uncertainties of IEEE 802.15.4 and Zigbee protocols, their network performance varies greatly, which ultimately leads to unsatisfactory reliability, packet transmission rate, transmission delay,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W72/04H04W80/00H04W84/18
CPCY02B60/50Y02D30/70
Inventor 王骏
Owner SHANGHAI INST OF PROCESS AUTOMATION & INSTR
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