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Multicast communication method, relay node and wireless network system using same

A wireless network system and relay node technology, applied in the field of relay nodes and wireless network systems, can solve problems such as energy consumption, power consumption, and reduction of device operation time and life cycle

Inactive Publication Date: 2013-09-25
IND TECH RES INST
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Problems solved by technology

[0003] However, in the above-mentioned multicast method, although ZigBee stipulates the group range to reduce the repeated message packets and message packet collisions generated by broadcast, under the network with higher node density, the multicast method of ZigBee will still cause a large number of energy consumption, and will cause low-power devices to quickly consume power, reducing the operating time and life cycle of the device

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  • Multicast communication method, relay node and wireless network system using same
  • Multicast communication method, relay node and wireless network system using same
  • Multicast communication method, relay node and wireless network system using same

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Embodiment Construction

[0026] The present invention provides a multicast method capable of broadcasting multicast packets while balancing power saving and power consumption of nodes.

[0027] The present invention provides a relay node capable of broadcasting a multicast packet with a balance between power saving and power consumption of the node.

[0028] The present invention provides a wireless network system capable of broadcasting multicast packets while balancing power saving and power consumption of nodes.

[0029] The multicast method proposed in the embodiment of the present invention is mainly to record its communicable member nodes in each relay node of the wireless network, and the relay node will first confirm other relay nodes when forwarding the multicast packet Whether this multicast packet has been broadcasted to its communicable member nodes, if its communicable member nodes can receive this multicast packet by other relay nodes, then this relay node will not broadcast this multica...

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Abstract

The invention relates to a multicast communication method, a relay node and a wireless network system using the method. The multicast communication method is suitable for transferring a multicast packet from a first member node to a plurality of second member nodes in the wireless network system, wherein the second member node and the first member node belong to the same group and can be communicated with each other through a plurality of non-member nodes. The multicast communication method comprises the following steps of: recording the number and the distance of the second member node, receiving the multicast packet from the first member node, determining a waiting time according to the number and the distance of the second member node, monitoring whether other nodes broadcast the multicast packet or not during the waiting time, and stopping to broadcast the multicast packet when other nodes broadcast the multicast packet to all second member nodes, otherwise, broadcasting the multicast packet after the waiting time becomes due.

Description

technical field [0001] The invention relates to a multicast communication method capable of efficiently multicasting on the premise of reducing power consumption, a relay node and a wireless network system using the method. Background technique [0002] With the maturity of wireless sensor network technology, wireless sensor network will be widely used in our life in the future. Taking the current ZigBee standard based on IEEE 802.15.4 as an example, a multicast method is specified in the ZigBee Specification Document, which can multicast messages to nodes belonging to a specific group. The multicast method specified by the ZigBee standard includes a non-member mode (Non-member Mode) and a member mode (Member Mode). The non-member mode mainly transmits message packets in a one-to-one (ie, one node to one node) manner of unicast, while the member mode mainly transmits message packets in a broadcast manner. At the beginning of a multicast communication, it is assumed that th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W4/06H04W52/02
CPCY02D30/70
Inventor 蔡佳宏陈昭佑卢奕丞曾煜棋郭伦嘉
Owner IND TECH RES INST
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