A wireless sensor adaptive network dormancy control method

Abstract

The invention discloses an adaptive network dormancy control method for wireless sensors. The method is characterized by including following steps: (1), network access points are numbered and receive data sent by sensor nodes of corresponding intranets; (2), the network access points sequentially serve as a main network management node according to the serial number of the nodes to be responsible for data transmission management and dormancy management of a network, dynamically adjust active time in a network active period according to network data conditions, and send a broadcasting instruction containing dormancy time information when the active period is over, then the network enters a dormancy state, and nodes in the network close a wireless module and start a timer until the dormancy time is over and entering the active period again; and (3), after a data relay node accesses to the network, network levels according to distances between the network access points and the relay node are determined, and data in the network are uploaded level by level to a WSN (wireless sensor network) server.

Description

technical field [0001] The present invention relates to a dormancy control method in a wireless network, in particular, to a dormancy control method for a wireless sensor adaptive network. Background technique [0002] The design goals of wireless sensor network (WSN) are low power consumption, high energy efficiency, low cost and low speed. WSN nodes are generally powered by batteries, and they usually use periodic sleep to reduce node power consumption and prolong working time. The current sleep control method in WSN generally adopts the following two methods: [0003] The first method requires clock synchronization within the network: [0004] First, the central node (cluster head node) periodically broadcasts clock information to maintain clock synchronization within the network; [0005] After receiving the information, the node in the WSN adjusts its own clock to synchronize with the central node, sends a response frame to the central node, enters the sleep state acc...

AI Technical Summary

Problems solved by technology

[0009] Take the low power consumption mode of the Zigbee protocol as an example. In the Zigbee network, only the terminal nodes can be set to the low power consumption mode, and the routing nodes and central nodes are always kept active. This way the network overhead is small, and the dormancy and Wake-up has no effect on the network, but routing nodes and central nodes consume a lot of power, and generally require external power supply

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