Spectrum distributing method

A technology for spectrum allocation and spectrum reception, applied in the field of spectrum allocation, which can solve the problems of reducing the utilization rate of spectrum resources, unavoidable interference of master-slave systems, adverse effects, etc.

Inactive Publication Date: 2011-07-27
BEIJING UNIV OF POSTS & TELECOMM
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Problems solved by technology

[0009] It can be seen that only by detecting the spectrum sensing method of the master transmitter, the interference between the master and slave systems cannot be avoided, and the utilization rate of spectrum resources will be reduced, causing the problem of hidden stations and exposed stations.
In the process of applying cognitive radio technology to the mobile communication system, due to the particularity of the network topology of the mobile communication system, the internal interference of the system will have a negative impact on the effective use of spectrum resources by the mobile communication system.

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Embodiment Construction

[0035] The technical solutions of the present invention will be described in further detail below with reference to the accompanying drawings and embodiments.

[0036] A kind of interference from the secondary user to the primary user is caused by the secondary user's simple detection of the primary transmitter. The typical representative of this type of interference is the hidden station problem. The exposed station problem corresponding to the hidden station problem is caused by the reduction of available spectrum holes for secondary users. Spectrum Holes. Therefore, the present invention divides the spectrum hole into a transmission spectrum hole and a reception spectrum hole on the basis of analyzing the problem of the exposed station and the hidden station, which are respectively used for transmission and reception from users. The transmitting spectrum hole is the authorized spectrum not used by the main receiver obtained by detecting the main receiver, and the receiving...

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Abstract

The invention relates to a spectrum distributing method which comprises the steps of: detecting a receiver by a slave transmitter to determine a transmitting spectrum hole, and detecting a transmitter by a slave receiver to determine a receiving spectrum hole; and taking intersection of the transmitting spectrum hole and the receiving spectrum hole to obtain a frequency set of a slave system, and carrying out spectrum distribution on the slave transmitter and the slave receiver according to the frequency set. The invention also relates to a spectrum distributing method of a cognitive mobile communication system. In the invention, problems of concealing and exposing stations can be avoided by adopting spectrum hole classification during spectrum distribution, and therefore, the disturbance probability of a slave user to a master user is reduced, disturbance coordination in the cognitive mobile communication system is further realized, and disturbance generating probability is reduced.

Description

technical field [0001] The present invention relates to the field of cognitive radio, in particular to a frequency spectrum allocation method. Background technique [0002] As of July 2009, there were 4.4 billion mobile subscribers worldwide. China Mobile users have reached 710 million. By 2015, China can plan about 1000MHz bandwidth spectrum resources for public mobile communications, but there is still a gap of about 300MHz from the total bandwidth demand of 1360MHz estimated by the Telecommunications Research Institute of the Ministry of Industry and Information Technology, and spectrum resources are tight. The bandwidth of 4G mobile communication system is 10 times that of 3G, which means greater bandwidth demand. The rapid development of wireless broadband mobile communication technology is challenged by the shortage of spectrum resources. Especially in the peak period of mobile communication system, frequency resources are more tense. In the newly promulgated proper...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W24/00H04W72/04
Inventor 王卫东张英海王永涛李凡王首峰
Owner BEIJING UNIV OF POSTS & TELECOMM
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