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Narrow-band ad hoc network timing synchronization method

A timing synchronization and ad hoc network technology, applied in the field of communication, can solve the problem of not considering the integration of two networks, achieve fast and efficient time slot synchronization, ensure security and reliability, and simple frame structure.

Active Publication Date: 2019-03-01
北京韦加航通科技有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] Secondly, when the nodes in the network move far away and can receive the time signal of another network, the two networks will merge. The above scheme does not take into account the integration of the two networks.

Method used

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  • Narrow-band ad hoc network timing synchronization method
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  • Narrow-band ad hoc network timing synchronization method

Examples

Experimental program
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Embodiment 1

[0043] In this embodiment, the time synchronization of nodes in a general narrowband ad hoc network is taken as an example to illustrate the process of network synchronization. Such as figure 1 As shown, among them,

[0044] Step 11, the narrowband self-organizing network node searches for signals of other nodes within a preset time after starting up;

[0045] Step 12, if the node receives time synchronization information from other nodes within a preset time, the node performs time synchronization according to the received information.

[0046] Step 13, if the narrowband ad hoc network node does not receive information from other nodes within a preset time after it is turned on, then the node is the first node of the network, and the node is set as the master node, and the time control A slot sends its own time synchronization information.

[0047] When the narrowband ad hoc network node competes for the time control time slot, it sends its own time synchronization informa...

Embodiment 2

[0050] In this embodiment, the time synchronization of nodes in a general narrowband ad hoc network is taken as an example to illustrate the process of network synchronization. Such as figure 2 As shown, there are 7 nodes in an area, among which,

[0051]Step (a), after the narrowband self-organizing network node is turned on, it searches for the signals of other nodes within a preset time, and the node 5 is set as the highest level, first sets itself as the master node, and sends its own time synchronization information in the time control time slot ;

[0052] Step (b), nodes 4, 6, and 7 receive the information sent by node 5 within the preset time to form network A, each node elects node 5 as the master node of network A, and completes network time synchronization; nodes 1, 2.3 If it does not receive information from other nodes within the preset time after starting up, it will set itself as the master node, send its own time synchronization information in the time contro...

Embodiment 3

[0073] The present embodiment provides the design of a kind of timing scheme of narrowband ad hoc network, the structure of preset frame TDMA time division multiple access frame: frame structure design is divided into four levels: super frame (super frame), frame (frame), time Slot (slot), mini-slot (mslot), a super frame is composed of frames, a frame is composed of time slots, and a time slot is composed of mini-slot 0 (mslot0), mini-slot 1 (mslot1) and two transceiver intervals ttg.

[0074] The mslot0 channel is used to transmit data information services and control signaling (including timing information and routing related information), and in order to simplify the design, the mslot0 channel is statically allocated to the terminals in the team, and the mslot0 of each time slot is correspondingly allocated to the corresponding terminal , for example, mslot0 of slot0 is allocated to terminal 0, mslot0 of slot1 is allocated to terminal 1, and so on. The method then includes...

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Abstract

The invention discloses a narrow-band ad hoc network timing synchronization method. Network time synchronization is finished through own settings of nodes. A frame structure designed by the inventionis simple, and nodes in a network are synchronized with a certain specific node, so that the security and reliability of in-network time synchronization can be ensured. Meanwhile, the time level structure of the whole network is established gradually along with the realization of network node synchronization without the need of a special level structure establishing stage, so that slot synchronization of the whole network can be realized rapidly and efficiently.

Description

technical field [0001] The present disclosure relates to the technical field of communications, and in particular to a timing synchronization method for a narrowband ad hoc network. Background technique [0002] With the development of wireless communication technology and the increase of people's demand for communication anytime and anywhere, Ad hoc network has attracted more and more attention due to its characteristics of not needing the support of fixed facilities and fast networking. The MAC layer controls the node's access to the wireless channel, and the use of time-division multiple access in the MAC layer can meet the requirements of Ad hoc network transmission real-time business and anti-interference communication. Time slot synchronization is the primary condition for network nodes to perform TDMA access. Only under the premise of time slot synchronization can a TDMA access system achieve conflict-free transmission. Therefore, the key issue to realize TDMA access...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04J3/06H04W56/00
CPCH04J3/0641H04J3/0652H04W56/0015
Inventor 王丽秦秀娟
Owner 北京韦加航通科技有限责任公司
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