Wireless sensor network active mode resting dispatching method
A technology of wireless sensors and dispatching methods, applied in transmission systems, electrical components, sustainable buildings, etc., can solve the problems of maintaining the monitoring state, wasting node energy, cross-talking, etc., to achieve energy saving, shorten activation time, and reduce idle monitoring the effect of time
Inactive Publication Date: 2012-11-21
THE PLA INFORMATION ENG UNIV
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[0007] The Media Access Control (MAC) protocol that adopts the active wake-up mechanism is mainly the B-MAC protocol. The main problem of this protocol is that when the neighboring node detects that the wake-up signal sent by the node is activated, it will keep monitoring until The entire wake-up signal is over, all adjacent nodes are activated, and the data packet service transmission is completed
When a node needs to send a unicast service packet, it hopes to wake up a specific destination node, but the non-destination node can also receive the wake-up signal and keep active, which will cause overhearing problems and waste node energy
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[0035] In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0036] To achieve the above object, the present invention provides an active sleep scheduling method for a wireless sensor network. see figure 2 , which is a flow chart of the active sleep scheduling method provided in the first embodiment of the present invention, the method includes the following steps:
[0037] Step 201: Embedding the remaining time length identifier in the wake-up packet of the wake-up signal, and sending it in the form of broadcast;
[0038] The wake-up signal is composed of wake-up packets. In order to achieve the maximum dormancy of the node, the remaining time length identifier is embedded in each wake-up small packet of the wake-up signal, which indicates the remaining time length of the wake-up signal...
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The invention provides a wireless sensor network active mode resting dispatching method comprising the following steps: a remaining time length mark is embedded into an awakening signal and sent in a broadcasting way; and a neighbor node awakens in period, receives the awakening signal, analyzes the remaining time length mark, determines an activation moment and is in a resting stage again, when the activation moment comes, the neighbor node is activated. The wireless sensor network active mode resting dispatching method can furthest shorten the activation time of network nodes, shorten the leisure listening time and furthest save the energy of the network nodes.
Description
technical field [0001] The invention relates to the field of wireless sensor networks, in particular to an active sleep scheduling method for wireless sensor networks. Background technique [0002] Usually, wireless sensor nodes are powered by dry batteries, button batteries, etc. Due to the large scale of the network or working in an unattended environment, it is difficult to charge or replace the batteries after the system is deployed. At the same time, in the design process, it is necessary to fully consider prolonging the network life as much as possible under the premise of meeting application requirements. Therefore, improving energy efficiency to prolong working time has become one of the main design criteria for wireless sensor networks. [0003] In wireless sensor networks, the main factors leading to energy loss include four aspects: idle listening, overhearing, collision and control overhead. Among them, idle monitoring and overhearing of mobile nodes cause the ...
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IPC IPC(8): H04L29/08
CPCY02B60/50
Inventor 张大龙于宏毅郭云飞张效义李鸥李青
Owner THE PLA INFORMATION ENG UNIV