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Main user and sub user frequency spectrum share method in cognitive radio

A cognitive radio and spectrum sharing technology, applied in wireless communication, electrical components, network planning, etc., can solve problems such as low spectrum utilization, and achieve the effect of simple steps

Inactive Publication Date: 2010-09-08
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Purpose of the invention: The purpose of the present invention is to provide a method for realizing spectrum sharing between primary and secondary users of cognitive radio for the problem of low frequency spectrum utilization

Method used

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  • Main user and sub user frequency spectrum share method in cognitive radio
  • Main user and sub user frequency spectrum share method in cognitive radio
  • Main user and sub user frequency spectrum share method in cognitive radio

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Embodiment Construction

[0014] The preferred embodiments will be described in detail below in conjunction with the drawings, but the scope of protection of the present invention is not limited to the embodiments.

[0015] Assume that the primary user adopts the following utility function:

[0016] φ ( p , b ) = p · b - cM ( B req - k p W - b M ) 2

[0017] where c represents the weight of the cost function, B req is the bandwidth required by the internal connection of a primary user, W is the total bandwidth of the primary user, M is the number of internal connections of the primary user, k p It is the ...

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Abstract

The invention discloses a main user and sub user frequency spectrum share method in cognitive radio, which comprises the following steps that: (1) main users notify the band limits of tenantable frequency spectra to sub users, and the sub users report the frequency spectrum efficiency to the main users; (2) the main users give the rent price of the frequency spectra to the sub users according to the principle of maximizing the self effectiveness; (3) the sub users determine the number of the frequency spectra to buy according to the principle of maximizing the self effectiveness, and report the conditions of frequency spectrum buying to the main users so that two parties can come to an agreement; and (4) after the expiration of the frequency spectra vented by the sub users, the use rights of the frequency spectra are returned to the main users, the sub users determine whether to continuously vent the frequency spectra of the main users or not according to actual conditions, and if the sub users continuously vent the frequency spectra, the first step to the third step are repeated in each frequency spectrum venting process. The main user and sub user frequency spectrum share method in cognitive radio of the invention has simple steps, and the information required to be mutually transferred between the main users and the sub users is little.

Description

technical field [0001] The invention relates to a method for spectrum sharing of primary and secondary users in cognitive radio, and belongs to the research field of spectrum resource management in mobile communication systems. Background technique [0002] With the development of the wireless communication market, the number of mobile communication users is increasing, and the shortage of spectrum resources is becoming increasingly prominent. The expansion of the communication market also promotes the rapid development of communication technology. Now we can improve spectrum efficiency by adopting advanced wireless communication theories and technologies, such as link adaptive technology, orthogonal frequency division multiplexing technology and multi-antenna technology. However, many studies have shown that the current spectrum allocation system is also a major reason for the scarcity of spectrum resources. At present, wireless networks generally adopt a fixed spectrum al...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W16/14
Inventor 徐文超王江舟
Owner SOUTHEAST UNIV
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