A regional danger warning system and method based on wireless detection and communication fusion

Abstract

The invention discloses a regional danger early warning system and method for the integration of wireless detection and communication. The cloud wireless network architecture is used to deploy public network or private network authorized frequency band RRU and millimeter wave frequency band RRU, and the public network or private network authorized frequency band and millimeter wave frequency band RRU are reasonably used. Based on the characteristics of the wave frequency band, while detecting the surrounding environment, it uses idle resources to realize high-reliability and large-capacity wireless communication, and feeds back the environmental detection results to the ground monitoring center through the communication function to achieve danger warning and other purposes. The physical layer frame in the authorized frequency band of the public network or private network is used to transmit low-capacity reliable wireless communication data. The millimeter wave frequency band is divided into detection frames and wireless communication frames in time according to requirements, and the millimeter wave frequency band RRU performs environmental detection signals within the detection frame time transmission and reception; RRU in the millimeter wave frequency band transmits large-capacity unreliable communication data within the frame time of wireless communication, and designs a signaling process for data transmission in the uplink and downlink directions that integrates the authorized frequency band of the public network or private network with the millimeter wave frequency band within the frame time of wireless communication .

Description

technical field [0001] The present invention relates to the field of wireless detection and communication, in particular to a system and method for realizing integration of wireless detection and communication in the millimeter wave frequency band on the basis of a cloud wireless network architecture. Background technique [0002] In previous communication systems, public or private network licensed frequency bands (frequency bands lower than 3.5 GHz) with better transmission characteristics were mainly used, while high-frequency frequency bands higher than 5 GHz were rarely involved, so these high-frequency frequency bands are still A very wide contiguous available spectrum remains. It can be predicted that for a long period of time in the future, the millimeter wave wireless communication system will be able to achieve huge economic benefits of ultra-high-speed data transmission and low cost. [0003] Another important application of the millimeter wave frequency band is ...

AI Technical Summary

Problems solved by technology

[0008] In the above-mentioned prior art (1), wireless transmission sensor monitoring equipment and monitoring base stations need to be laid in high density along the railway line, and the maintenance cost is high, and if some sensors are abnormal, it will lead to failure of the overall monitoring system, and its disaster warning performance Also depends on the reliability of the information transmission channel

At the same time, this solution is only limited to the monitoring of landslides, and loses the monitoring function for falling rocks and foreign matter invasion.

[0009] In the above-mentioned prior art (2), the laser detection is only detected on one plane, and the three-dimensional information of the object cannot be detected.

During night detection, it is necessary to use additional visible light to illuminate the predetermined road section. Even so, in severe weather conditions such as rainfall, snowfall, and fog, or when there are interfering light sources around the road, the quality of image information collection will be seriously affected. When the laser detects an abnormal state, it cannot accurately determine what kind of disaster caused it, resulting in a large number of false alarms

[0010] In the above prior art (3), in order to send the radar detection results back to the monitoring center, a set of monitoring network needs to be specially built, and the reuse rate is low

Due to the low probability of disasters and each radar works independently, it will cause redundancy in radar signal processing performance and waste of cost

When the ground monitoring center receives the early warning signal, since the vehicle may not have a wireless signal on the way, it cannot directly communicate with the monitoring center. It can only be forwarded through the "natural disaster and geological disaster monitoring device", which increases the complexity of the system.

In addition, the frequency band it uses is a public network or private network licensed frequency band, with low bandwidth and limited detection accuracy

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