Method for implementing frequency spectrum cavity-pocket efficient utilization based on existing honeycomb communication signaling transmission

Abstract

The invention discloses a method for realizing effective utilization of spectrum holes based on available cellular communication signaling, which is characterized in that the available cellular communication mode and the cognitive communication mode adopt a same clock source, a user terminal keeps the synchronization of the carrier frequency and the frame timing of the cognitive communication mode by locking on the carrier frequency and the frame timing of the available cellular communication mode. Signaling messages for allocating the frequency point, the bandwidth and the perceived spectrum holes of the cognitive communication mode are added in the available cellular communication signaling. A base station determines the cognitive manner including working parameters of the frequency, the bandwidth and the perceived spectrum holes based on the perception result, and notifies a terminal in time via the signaling of the available cellular communication mode. The terminal allocates the cognitive communication mode thereof according to the effective time. The perceived spectrum results interact among base stations, and the user terminal transmits and reports the perceived spectrum information to the base stations via the signaling of the available cellular communication mode. The method can effectively adopt cognitive radio technology in the radio cellular communication system, take full use of spectrum holes resource, and reduce possible conflicts with authorized users.

Description

technical field [0001] The invention belongs to the technical field of wireless communication, relates to wireless cellular communication and cognitive radio technology, and in particular to a method for effectively utilizing spectrum holes based on existing cellular communication signaling transmission. Background technique [0002] The rapid development of wireless communication technology makes the limited spectrum resources more and more tense. The concept of cognitive radio (Cognitive Radio) proposed by IEEE Personal Communications in 1999, its core idea is to enable wireless communication devices to have the ability to discover and reasonably use "spectrum holes", so that Cognitive wireless communication devices can operate in authorized frequency bands in an "opportunistic" manner. The spectrum resources that can be utilized in the air domain, time domain and frequency domain are called "spectrum holes". The current research on cognitive wireless technology focuses ...

AI Technical Summary

Problems solved by technology

With the usual cognitive radio technology, the operating frequency of the base station needs to change at any time according to the results of spectrum sensing, which requires all users residing in the cell to change the frequency accordingly, which greatly increases the complexity of the system, and those who are idle or Users in sleep mode have difficulty changing frequencies on the fly, having to rescan for frequencies and reconnect

These disadvantages make it difficult to practically apply common cognitive radio technologies such as wireless local area networks in cellular networks

With the rapid development of wireless communication technology, the wireless cellular network is rapidly updated, from the second generation mobile communication system (2G) to the third generation (3G), but the network of the new generation system requires a long investment and construction process. Therefore, the network coverage of the new system has to be supplemented by the existing cellular system, resulting in the emergence of dual-mode or even triple-mode terminals

The simple update of this kind of wireless cellular network will inevitably lead to a large amount of new investment and the idleness and elimination of existing network equipment

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