Method and equipment for transmitting data

A data transmission method and data transmission technology, applied in the field of data transmission methods and equipment, can solve problems such as increasing data transmission delay, and achieve the effect of reducing delay and ensuring synchronization

CN102892193AActive Publication Date: 2013-01-23HUAWEI TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2013-01-23

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Abstract

The embodiment of the invention provides a method and equipment for transmitting data. The method for transmitting the data comprises the following steps that: a network node determines that a target sensor node to which the data is transmitted is in an inactive period; the network nodes sends an awakening message to the target sensor node, wherein the awakening message is used for triggering the target sensor node to enter an awakened state from a dormant state in the inactive period; the network node receives a response message, which corresponds to the awakening message, which is sent by the target sensor node; and the network node transmits the data to the target sensor node according to the response message. According to the method and the equipment for transmitting the data, the network node sends the awakening message to the target sensor node which is in the inactive period to ensure that the target sensor node is awakened from the dormant state, and then the network node transmits the data to the target sensor node, so that the network node can transmit the data to the target sensor node without waiting for the next superframe active period when the target sensor node is in the inactive period, time delay of data transmission is shortened, and synchronization of the data transmission is guaranteed.
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Description

technical field

[0001] The embodiments of the present invention relate to the technical field of communications, and in particular, to a data transmission method and device. Background technique

[0002] The wireless sensor network is composed of a large number of miniature sensor nodes deployed in the monitoring area. It is a multi-hop self-organizing network formed by wireless communication. At present, the wireless sensor network has been widely used, but the sensor nodes are powered by batteries. When the battery energy is exhausted, the sensor nodes will lose their function. Therefore, reducing energy consumption is an important technology to prolong the life cycle of wireless sensor networks.

[0003] In the prior art, the sensor nodes are in the wake-up state during the active period of the superframe, and can perform data interaction with the network nodes at this time, while during the inactive period of the superframe, the sensor nodes enter the sleep state to redu...

Examples

Embodiment Construction

[0061] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0062] figure 1 It is a flowchart of Embodiment 1 of the data transmission method of the present invention, such as figure 1 As shown, the method of this embodiment may include:

[0063] S101. The network node determines that the destination sensor node of the data to be transmitted is in an inactive period;

[0064] The embodiments of the pres...