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Ad hoc network TDMA slotted synchronous method

A time slot synchronization and network technology, which is applied to synchronization devices, data exchange networks, and data exchange through path configuration. Effect

Active Publication Date: 2006-01-11
GUANGZHOU HAIGE COMM GRP INC +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There is no central node that can directly communicate with all users in the Ad Hoc network. Generally, network nodes need to go through multiple hops to communicate with other nodes. Using TDMA access in such a network, the problem of time slot synchronization becomes complicated

Method used

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  • Ad hoc network TDMA slotted synchronous method
  • Ad hoc network TDMA slotted synchronous method
  • Ad hoc network TDMA slotted synchronous method

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Embodiment Construction

[0017] like Figure 1 ~ Figure 2 Shown, the Ad hoc network TDMA time slot synchronization method of the present invention comprises the following steps:

[0018] (1), the first time slot of each time frame of the time element in each node in the time division multiple access (TDMA) system is set as the management time slot used for competition, and this time slot is used for transmission time Synchronization information (TOD) frame.

[0019] (2), the management time slots in each node use the method of priority or token to elect the time master node and the backup master node to ensure the reliability of the time slot reference source, and transfer the remaining secondary nodes in the network Nodes are graded according to the distance from the master node and the time reference of each node in the entire network is aligned with the master node. Except for the time reference, the other functions of the time master node are the same as other nodes in the network; When the main...

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Abstract

A TDMA time slot synchronous method for Ad hoc network includes the following: designing a first time slot of each time frame of time element in each node in the TDMA system as the management time slot for competition, generating a time master control node and a back up master control node by voting applying a FH digital transmission way between master control node and other sub-nodes to send time synchronous information and designing a frogging counter to realize a uniform frogging primary standard for the T / R two parties, adding a time slot counter and a time frame counter to realize the time synchronization among nodes and time refresh and the node time primary standards among nodes are basically the same.

Description

technical field [0001] The invention relates to the field of wireless network access, in particular to a time slot synchronization method for realizing a time division multiple access (Time Division Multiple Access, TDMA) system in an Ad hoc network. Background technique [0002] Ad hoc network is a wireless, multi-hop self-organizing network. Nodes in the network can communicate with nodes outside the signal coverage by means of forwarding from other nodes. Due to the mobility of nodes, nodes can join or exit the network at any time, causing frequent changes in the network topology, which makes the realization of Ad hoc networks difficult. [0003] TDMA (Time Division Multiple Access) Time Division Multiple Access is a typical multiple access method, and nodes in the network share wireless channels in time by using time slots. This method solves the collision problem among network users, improves efficiency, and can ensure the transmission of some real-time data and voice...

Claims

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Application Information

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IPC IPC(8): H04L12/24H04L12/28
CPCH04W56/0015
Inventor 赵民建罗志勇徐明霞黄耕文刘勇张建军杨仕平钟杰
Owner GUANGZHOU HAIGE COMM GRP INC
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