Frequency-hopping type WIFI system

Abstract

The invention discloses a frequency-hopping type WIFI system. The frequency-hopping type WIFI system comprises a radio frequency front end, a WIFI signal processing unit, a frequency-hopping unit and a frequency-hopping synchronization unit. The frequency-hopping unit comprises a first frequency mixer, a second frequency mixer and a radio frequency signal source. The frequency-hopping synchronization unit comprises a power divider, a power combiner, a synchronous information transceiver, a frequency-hopping synchronous controller, a local time reference and a Beidou receiver. By the adoption of the frequency-hopping type WIFI system, mutual interference caused by sudden encountering between an integrally moving local area network device and local fixed networking devices when a local area networking system is in a cluster integrally moving communication mode can be avoided; available communication channels of the WIFI system are expanded to some extent, and the local area networking system has higher communication capability; when the positioning function of a Beidou system is used, intelligent distribution of spectrum resources in a three-dimensional space mode can be further achieved; compared with a traditional two-dimensional cellular plane distribution mode, the use efficiency of the spectrum resources of the WIFI system can be remarkably improved.

Description

technical field [0001] The invention relates to a communication system, in particular to a frequency-hopping WIFI system. Background technique [0002] At present, wireless mobile devices are becoming more and more popular, but due to the scarcity of spectrum resources, channel usage is very tight. WIFI system is a very typical wireless communication network. Mobile devices such as smartphones and computers generally have WIFI wireless communication functions. The existing WIFI mobile communication network is mainly composed of ground access points with fixed channels and mobile devices. There is a spatial distance between the ground access points, and different frequencies are used according to certain rules to form a grid of the same frequency communication area. The cellular grid is a typical structure. Do not interfere with each other. Mobile devices move in areas with ground access points, freely switch channels and realize mobile communication. WIFI mobile communica...

AI Technical Summary

Problems solved by technology

The current basic solution is to fix the working channel of the WIFI system and make it a dedicated frequency band, but this has obvious disadvantages, because the working frequency band of WIFI is a free frequency band and there is no regulation that a certain channel can only be used exclusively, which is impossible reserve

Another way is to control the communication range of mobile WIFI, that is, to limit the communication distance of WIFI system

Limiting the communication distance is probably the best solution at present, but it only solves the problem to a certain extent

With the increase of mobile devices in the future, access points will be spread all over the place, and popular vehicles such as cars are gradually equipped with WIFI systems. A car fleet may need to form a local area network to move together and communicate with each other. Opening WIFI service, obviously under the increasingly complicated communication situation, it is very difficult to fix the channel and limit the communication distance.

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