Adhoc network data transmission method and device

Abstract

The invention discloses an adhoc network data transmission method and an adhoc network data transmission device. The adhoc network data transmission method comprises the steps that: a node sends a first synchronous sequence in a full-duplex manner at a predetermined time slot, and a receiving channel of the node is detected at the same time, wherein the first synchronous sequence is used for completing gain adjustment and coarse frequency offset estimation; and the node determines the conflict situation of the predetermined time slot by adopting a method based on radio frequency interference cancellation. The adhoc network data transmission method and the adhoc network data transmission device detect the receiving channel of the node when the node sends the first synchronous sequence, determine whether conflict occurs at the time slot used by the node according to the detection result, achieve self-detection of conflict situation at the time slot used by the node, increase conflict detection accuracy, greatly reduce retransmission time delay of node information, and increase network performance.

Description

technical field [0001] The present invention relates to the field of data processing, in particular to a data sending method and device of an ad hoc network. Background technique [0002] In the DSRC (Dedicated Short Range Communications) network based on TDAdhoc technology, the communication nodes are in the self-organizing state. The wireless ad hoc network of TDAdhoc technology is widely used in the Internet of Vehicles. The transmission delay of the ad hoc network should be short and the reliability should be high. , so as to ensure instant communication between vehicles and to make quick responses, where each vehicle can be regarded as a node, [0003] Among them, the technical characteristics of TDAdhoc Internet of Vehicles are as follows: [0004] 1. GNSS (Global Satellite Navigation System) timing synchronization is used between vehicles, and time slots are divided based on GNSS timing. Each vehicle occupies a time-frequency resource of a time slot, and different us...

AI Technical Summary

Problems solved by technology

[0022] 3) Nodes C and D decide to send their own data in time slot c of SFN=N+1, causing a conflict in time slot c;

[0025] Aiming at the problem that the collision time slot cannot be accurately found in the related technology, the threshold for judging the collision is not easy to set, the process of finding the collision takes a long time, and the retransmission delay increases, and no effective solution has been proposed so far.

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