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

A technology for sending data and data to be sent, applied in the direction of digital transmission system, transmission system, data exchange network, etc., can solve problems such as delayed transmission, inability to send, and reduced network service quality.

Active Publication Date: 2011-03-30
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0020] With the continuous development of Zigbee technology, the business types and information forms are constantly enriched. If the data is still sent in the existing way, it will inevitably cause some important information to be delayed or even unable to be sent due to the inability to apply for the GTS time slot first. Reduced network service quality

Method used

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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

[0057] image 3 It is a schematic diagram of the composition and 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, and the functions of each node are the same.

[0058] The node is used to send a GTS request to the coordinator and send data in the allocated GTS time slot;

[0059] The coordinator is used to receive the GTS request of the node, and allocate the GTS time slot for the node according to the priority of the data to be sent in the node.

[0060] like Figure 4 as shown, Figure 4 It is a schematic diagram of a node composition structure, and the node mainly includes an application layer module 401 , a network layer module 402 , a MAC layer module 403 and a physical layer module 404 .

[0061] The application layer module 401 is used to encapsulate the data to be sent into APDUs, and determine the priority leve...

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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 coordinatorreceives 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 providedpartially.

Description

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

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/56H04L12/24H04L29/02
CPCH04L47/10
Inventor 谷志慧张玲
Owner HUAWEI TECH CO LTD