Neighbor discovering method of IEEE802.15.4e (Institute of Electrical and Electric Engineer 802.15.4e) network

An ieee802.15.4e and neighbor discovery technology, applied in the field of wireless sensor networks, can solve the problems of long channel search time and high energy consumption

Active Publication Date: 2013-09-25
SHENYANG INST OF AUTOMATION GUANGZHOU CHINESE ACAD OF SCI
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  • Abstract
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Problems solved by technology

[0006] The purpose of the present invention is to overcome the shortcomings and deficiencies of the prior art and provide a neig...

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  • Neighbor discovering method of IEEE802.15.4e (Institute of Electrical and Electric Engineer 802.15.4e) network
  • Neighbor discovering method of IEEE802.15.4e (Institute of Electrical and Electric Engineer 802.15.4e) network
  • Neighbor discovering method of IEEE802.15.4e (Institute of Electrical and Electric Engineer 802.15.4e) network

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Embodiment

[0045] Such as figure 1 , figure 2 As shown, the network of this embodiment is a low latency deterministic network (Low Latency Deterministic Network, LLDN) in the IEEE802.15.4e network. The LLDN network is a star network for low energy consumption applications, and there is a coordinator and multiple Each wireless node only communicates with the coordinator. All packets on the LLDN network are sent and received within a certain time slot, and only the coordinator periodically sends beacon frames, and only one beacon frame appears within a superframe period. A superframe in the LLDN network is divided into four parts, which are the beacon slot part, and the coordinator sends the beacon frame in this time slot; the management slot part, including uplink and downlink, is used for network management reporting. text sending and receiving; the uplink time slot part and the bidirectional time slot part are used for retransmission, sending and receiving or replying of data message...

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Abstract

The invention discloses a neighbor discovering method of IEEE802.15.4e (Institute of Electrical and Electric Engineer 802.15.4e) network. The method comprises the following steps of: S1, designing a message monitoring algorithm E-OPT, starting to monitor a message; S2, when monitoring the first message, recording the message type and the time for message detection, and forecasting the range of beacon frame order b; S3, forecasting a recently possible time slot T of the beacon frame; S4, sleeping until the time slot, at the time slot T, monitoring the channel appointed by the E-OPT algorithm, if the beacon frame is not monitored, removing the current b value, returning back to the step S3, if the beacon frame is monitored, stopping, if the total neighbor discovering time is greater than a certain value tmax, judging that neighboring discovery is failed. In the method, based on the relation between the normal message and the beacon frame in the network, the position of the beacon frame is forecasted by monitoring the normal message, thus monitoring becomes easier; and meanwhile, the time for monitoring the normal message is shorter, so that the beacon frame can be monitored just by limited times of monitoring, energy waste caused by aimless monitoring is reduced, and monitoring energy is saved more.

Description

technical field [0001] The invention relates to the technical field of wireless sensor networks, in particular to a neighbor discovery method of an IEEE802.15.4e network. Background technique [0002] In recent years, wireless sensor networks have been widely used in the industrial field. In addition to high reliability and high real-time performance, low power consumption of industrial wireless devices is also an urgent need for industrial applications. In WSN, the energy of nodes is limited and difficult to replenish. Therefore, industrial wireless replaces wired, energy issues are a hot spot in practical applications, and the improvement of communication protocols is an important measure to improve energy efficiency. In the WSN protocol stack, the MAC layer determines the channel allocation and usage methods, and plays an important role in the energy consumption of the protocol stack. To this end, the TG4e (IEEE802.15.4e) working group was formally established in 2008. I...

Claims

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Application Information

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IPC IPC(8): H04W48/16H04W52/02
CPCY02D30/70
Inventor 肖金超程海梅曾鹏臧传治
Owner SHENYANG INST OF AUTOMATION GUANGZHOU CHINESE ACAD OF SCI
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