A miniaturized multi-service wireless mobile ad hoc network system

Abstract

The invention provides a miniaturized multiservice wireless mobile ad hoc network system. A physical layer comprises a DSSS module and an OFDM module, wherein the OFDM module provides an OFDM protocol for transmitting service data information with a higher rate requirement, the DSSS module provides a DSSS protocol for transmitting network maintenance and control information of each node and service data information with a lower rate requirement. A link layer employs a TDMA mode to segment time into periodic frames and then segments the frames into DSSS fixation time slot portions, DSSS dynamic time slot portions and OFDM dynamic time slot portions. A network layer provides a multipath route protocol for transmitting all information, employs an active route mode to maintain one-hop neighbor nodes and employs an on-demand route mode to maintain neighbor nodes of more than one hop. The wireless mobile ad hoc network system can simultaneously satisfy a miniaturization transmission requirement and a multiservice transmission requirement.

Description

technical field [0001] The invention relates to the related field of wireless communication transmission, in particular to a miniaturized multi-service wireless mobile ad hoc network system. Background technique [0002] It is very important to quickly restore communication when the basic mobile network has no coverage or is disturbed, such as natural disasters or other various reasons that cause the network infrastructure to fail and become unusable. In addition, in the application of emergency anti-terrorism command, anti-terrorism personnel form an action team, and the team members need to cooperate with each other and share on-site situation information to be able to carry out emergency tasks smoothly. In this regard, with the help of mobile ad hoc network technology, a temporary network can be quickly established and the network infrastructure can be extended, thereby reducing rescue time and damage caused by disasters. It can be seen that most of the wireless mobile a...

AI Technical Summary

Problems solved by technology

[0003] Although the wireless mobile ad-hoc network is a popular research topic at present, there are still major contradictions to be resolved in the face of miniaturized multi-service transmission requirements. Specifically, the topology of the network in the mobile ad-hoc network is coordinated and Autonomy, large range of topology changes, and constant changes in communication links. Miniaturized transmission requires low network complexity and low operating overhead, while multi-service transmission requires bandwidth that varies with different business data and maintains routing and link reliable transmission

Existing wireless mobile ad hoc network systems usually use a single DSSS or OFDM system to transmit data, which cannot meet the transmission requirements of multiple services. Moreover, in order to ensure network mobility and application scenarios with large topology changes, a single node needs to use The active routing method maintains the routing of the entire network nodes, which requires a lot of control overhead for the network, increases the complexity, and does not meet the requirements of miniaturized transmission

Although there is an on-demand routing method with low control overhead, the re-search efficiency of this method is low, and it does not meet the characteristics of network mobility.

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