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Node network access method based on distributed time division multiple access wireless ad hoc network

A wireless ad hoc network, time division multiple access technology, applied in wireless communication, access restriction, electrical components, etc., can solve the problem of not seeing the establishment of routing tables, and achieve the effect of saving network resources

Inactive Publication Date: 2014-11-05
HARBIN ENG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Among the many studies above, there is no precedent for combining the reservation time slot and the establishment of the routing table in the process of node network access.

Method used

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  • Node network access method based on distributed time division multiple access wireless ad hoc network
  • Node network access method based on distributed time division multiple access wireless ad hoc network
  • Node network access method based on distributed time division multiple access wireless ad hoc network

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Embodiment Construction

[0033] Below in conjunction with accompanying drawing, the present invention is described in more detail:

[0034] to combine figure 1 . Each slot consists of multiple mini-slots. 101 is the guard time at the beginning of each time slot to prevent collisions caused by self-synchronization time errors. 102 is a TLC / AGC sequence and a synchronization header sequence, the TLC / AGC sequence is mainly convenient for the level control of the radio transmission and the automatic gain control of the radio reception, and the synchronization header sequence realizes functions such as signal capture and parameter estimation. The guard time, the TLC / AGC sequence and the sync header sequence together occupy one mini-slot. 103 is the message header part of the message, occupying one mini-slot. 104 is the data part of the message, and the data part will occupy one or more mini-time slots according to different situations. In the case of encryption, in the first mini-slot of the data part...

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Abstract

The invention provides a node network access method based on the distributed time division multiple access wireless ad hoc network. The node network access method comprises the following steps: (1) a new node sends network access request message in the wireless ad hoc network; (2) the existing node evaluates the network load condition per se and judges whether to send a network access permission message to the new node; (3) after receiving the network access permission message, the new node records route information reaching the source address of the message; (4) the new node analyses the received network access permission message, selects an acceptable mini time slot and sends a time slot receiving message for confirmation; (5) a node receiving the time slot receiving message in the network judges whether to release own redundant time slot and adds the route information reaching the new node; and (6) the network access process is completed. Through the node network access method, the utilization ratio of network resources is increased, the network access time delay of the new node is reduced, and the sending time delay of part of short-distance messages is reduced.

Description

technical field [0001] The invention relates to a wireless communication technology, in particular to a node access operation method in a wireless ad hoc network based on distributed time division multiple access. Background technique [0002] With the development and application of Synchronous Processing System (CPS) technology, the terminal synchronization of wireless ad hoc network is no longer a problem, and because the distributed time division multiple access (TDMA) technology has low data collision rate, good fairness, and network resource utilization Higher advantages make it more and more attractive to wireless ad hoc networks, especially for dynamic changes in network topology and overloaded data transmission. [0003] In actual application, wireless ad hoc network based on distributed time division multiple access often encounters the problem of node access caused by the needs of actual tasks. The node network access process specifically includes two steps: time ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W40/24H04W48/06
Inventor 刘彤张林波赵恩凤黎芳张川
Owner HARBIN ENG UNIV
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