A method and system for data transmission and node devices and coordination device

A technology for sending data and data to be sent, which is applied in digital transmission systems, transmission systems, data exchange networks, etc., and can solve problems such as inability to send, inability to send important data in priority, inability to adjust the order of data transmission, etc.

Active Publication Date: 2008-06-04
HUAWEI TECH CO LTD
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Problems solved by technology

[0019] It can be seen that in the existing Zigbee beacon network, all data are processed and sent equally. In the GTS mechanism, the coordinator can only allocate GTS according to the principle of first-come-first-served, but cannot adjust the sending order of data. That is, it is impossible to send important data first
[0020] With the c

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  • A method and system for data transmission and node devices and coordination device
  • A method and system for data transmission and node devices and coordination device
  • A method and system for data transmission and node devices and coordination device

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Embodiment Construction

[0049] In order to make the objectives, technical solutions, and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0050] According to the embodiment of the present invention, the node in the network sends a GTS request to the coordinator; the coordinator receives the GTS request of the node, and assigns the GTS time slot to the node according to the priority of the data to be sent in the node; the node is in the assigned GTS time slot send data.

[0051] image 3 Is a schematic diagram of the composition structure of the system according to the embodiment of the present invention, such as image 3 As shown, the system is mainly composed of a coordinator and several nodes, such as node 1, node 2, and node 3. Each node has the same function.

[0052] The node is used to send a GTS request to the coordinator and send data in the allocated GTS time slot;

[0053]...

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Abstract

The embodiment of the invention discloses a data transmission method which comprises the following steps: nodes in the network transmit guaranteed time slot (GTS) requests to a coordinator. The coordinator distributes GTS for the node according to the priority levels of the to-be-transmitted data in the received node GTS requests. The nodes transmit data in the distributed GTS. If the coordinator receives the GTS requests from nodes of high-level priority, the GTS distributed for current nodes of low-level priority can be reduced or stopped and distributes the GTS to the nodes of high-level priority, thus guaranteeing important information in the network can be transmitted preferentially. The embodiment of the invention also discloses a data transmission system as well as a node device and a coordinating device. By application of the system and devices, important information in the network can be transmitted preferentially and thus network service quality (QoS) service can be provided partially.

Description

Technical field [0001] The present invention relates to Zigbee network technology, in particular to a method and system for sending data, as well as node equipment and coordination equipment. Background technique [0002] Zigbee is an emerging short-distance, low-speed, low-cost, low-power wireless communication technology, which is mainly used in home control, industrial detection, and sensor networks. The Zigbee network is a wireless network composed of many wireless transmission nodes. In the entire network, these transmission nodes communicate with each other. [0003] Zigbee mainly works in the three frequency bands of 868MHz (Europe), 915MHz (US) and 2.4GHz (global). The transmission rate is less than 250Kb / s, and the communication distance is within 100 meters. The IEEE 802.15.4 standard is used as the physical layer and Media access control (MAC) layer standard, and the application layer and network layer standards are formulated by the Zigbee Alliance. [0004] The Zigbe...

Claims

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Application Information

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IPC IPC(8): H04L12/56H04L12/24H04L29/02
CPCH04L47/10
Inventor 谷志慧张玲
Owner HUAWEI TECH CO LTD
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