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Secondary user access method for maximization of capacity of dynamic spectrum sharing system

A technology of shared system and dynamic spectrum, applied in access restriction, electrical components, wireless communication, etc., can solve the problem of high requirements for secondary user perception accuracy, etc.

Inactive Publication Date: 2010-08-11
NANJING UNIV OF POSTS & TELECOMM
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Problems solved by technology

Obviously, opportunistic sharing has no limit on the transmit power of the secondary user’s transmitter, but it requires high perception accuracy for the secondary user, which makes the QoS of the primary and secondary users relatively guaranteed; coexistence sharing requires the secondary user to work in a power-constrained environment. limited state, it requires relatively low perception accuracy for the secondary user, but the real-time performance of the secondary user's work can be guaranteed, and the spectrum efficiency is relatively high

Method used

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  • Secondary user access method for maximization of capacity of dynamic spectrum sharing system
  • Secondary user access method for maximization of capacity of dynamic spectrum sharing system
  • Secondary user access method for maximization of capacity of dynamic spectrum sharing system

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Embodiment Construction

[0057] A secondary user access method that maximizes the capacity of a dynamic spectrum sharing system, its application scenario is as follows figure 1 As shown, the access control nodes AP1 and AP2 are respectively responsible for the management of the access request of the primary user and the secondary user; the primary network adopts the frequency division multiple access (FDMA) access mode, and it has N max Authorized frequency bands, each authorized frequency band serves one primary user by default; there are N frequency bands open to secondary users to share p number of primary users that can participate in spectrum sharing is N p at least one primary user is active and one secondary user requests to use the frequency band for communication. Here, the method defaults that the working bandwidth of the secondary user is the same as that of each primary user. The implementation of the secondary user access method will be further described in detail below in conjunction w...

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Abstract

The invention relates to a secondary user access method for maximization of capacity of a dynamic spectrum sharing system, in particular to a secondary user access method which can maximize the capacity of a dynamic spectrum sharing system. In the method, a secondary user selects a channel with the highest transmission power for access during each working cycle of each secondary user, the channel can be known according to a Shannon formula, and each secondary user can obtain the maximum capacity available at present during each working cycle. Therefore, each secondary user can obtain the maximum average capacity in the whole communication period, and the sum of the average capacities of all secondary users can be the maximum, thereby realizing the maximization of the average capacity of the dynamic spectrum sharing system.

Description

technical field [0001] The present invention relates to the field of wireless communication, in particular to a secondary user (SU: Secondary User) access method for maximizing the capacity of a Dynamic Spectrum Sharing System (DSSS: Dynamic Spectrum Sharing System). Background technique [0002] In recent years, the rapid development of wireless communication technology has led to a rapid increase in the demand for wireless spectrum resources, and the shortage of wireless spectrum resources has begun to attract widespread attention. The increasing scarcity of wireless spectrum resources is mainly caused by two reasons. One is the natural limitation of wireless spectrum, and the other is the static allocation of wireless spectrum resources, which makes the wireless frequency band exclusively occupied by authorized users. The finiteness of wireless spectrum resources is an inherent property that cannot be changed; therefore, the only way to solve the problem of wireless spect...

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Application Information

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IPC IPC(8): H04W16/14H04W48/06H04W74/02
Inventor 张晶朱洪波
Owner NANJING UNIV OF POSTS & TELECOMM
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