Data Transmission Method and Device
First Claim
1. A data transmission method, comprising:
- determining, by a network node, that a destination sensor node of to-be-transmitted data is in an inactive period;
sending, by the network node, a wake-up message to the destination sensor node, wherein the wake-up message is used to trigger the destination sensor node to enter a woken-up state from a dormant state of the inactive period;
receiving, by the network node, a response message that is from the destination sensor node and for the wake-up message; and
performing, by the network node, data transmission with the destination sensor node according to the response message.
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Abstract
A data transmission method and device are provided. The data transmission method includes determining, by a network node, that a destination sensor node of to-be-transmitted data is in an inactive period; sending, by the network node, a wake-up message to the destination sensor node, where the wake-up message is used to trigger the destination sensor node to enter a woken-up state from a dormant state of the inactive period; receiving, by the network node, a response message that is from the destination sensor node and for the wake-up message; and performing, by the network node, data transmission with the destination sensor node according to the response message. According to the embodiments of the present invention, a data transmission delay is reduced, and data transmission synchronization is ensured.
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Citations
20 Claims
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1. A data transmission method, comprising:
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determining, by a network node, that a destination sensor node of to-be-transmitted data is in an inactive period; sending, by the network node, a wake-up message to the destination sensor node, wherein the wake-up message is used to trigger the destination sensor node to enter a woken-up state from a dormant state of the inactive period; receiving, by the network node, a response message that is from the destination sensor node and for the wake-up message; and performing, by the network node, data transmission with the destination sensor node according to the response message. - View Dependent Claims (2, 3, 4, 5)
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6. A data transmission method, comprising:
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receiving, by a sensor node, a wake-up message sent by a network node, wherein the wake-up message is used to trigger the sensor node to enter a woken-up state from a dormant state of an inactive period; sending, by the sensor node, a response message that is for the wake-up message to the network node; and performing, by the sensor node, data transmission with the network node. - View Dependent Claims (7, 8, 9, 10)
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11. A network node, comprising:
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a determining module configured to determine that a destination sensor node of to-be-transmitted data is in an inactive period; a sending module configured to send a wake-up message to the destination sensor node, wherein the wake-up message is used to trigger the destination sensor node to enter a woken-up state from a dormant state of the inactive period; a receiving module configured to receive a response message that is from the destination sensor node and for the wake-up message; and a transmitting module configured to perform data transmission with the destination sensor node according to the response message. - View Dependent Claims (12, 13, 14, 15)
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16. A sensor node, comprising:
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a receiving module configured to receive a wake-up message sent by a network node, wherein the wake-up message is used to trigger the sensor node to enter a woken-up state from a dormant state of an inactive period; a sending module configured to send a response message that is for the wake-up message to the network node; and a transmitting module configured to perform data transmission with the network node. - View Dependent Claims (17, 18, 19, 20)
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Specification