Auxiliary carrier configuration and resource scheduling method and system

Abstract

The invention discloses an auxiliary carrier configuration and resource scheduling method and system. The method comprises the steps that the idle frequency information of each idle frequency band in a work frequency range is acquired; when at least one of available frequency band is found according to the idle frequency information, at least one of available frequency band is configured as an auxiliary carrier; through a main carrier, the configuration information of the auxiliary carrier is informed to a user terminal UE; and when resource scheduling is carried out on the UE on the auxiliary carrier, the resource scheduling information of the auxiliary carrier is sent to the UE through the main carrier. Compared with the prior art, the auxiliary carrier configuration and resource scheduling method and system, which are provided by the invention, can improve the data streaming capability of the auxiliary carrier, and can improve the utilization rate of the idle frequency band.

Description

technical field [0001] The present application relates to cognitive radio technology, and in particular to a method and system for configuring secondary carriers and resource scheduling. Background technique [0002] In traditional radio spectrum management, a certain frequency band is allocated to a certain wireless service by adopting a fixed spectrum allocation method, and then the frequency band is divided into several frequency bands, which are respectively authorized to different wireless service operators for use. In a certain frequency band, the wireless access system of an operator is granted the right to use the frequency band in the whole time period and the entire geographical area. Even if it does not use the frequency, other systems have no right to use the frequency band. This system with authorized spectrum called an authorization system. [0003] The basic idea of ​​cognitive radio technology is to know the free spectrum resources of each licensed user thro...

AI Technical Summary

Problems solved by technology

[0006] In the existing auxiliary carrier configuration and resource scheduling methods, since the bandwidth configuration of the auxiliary carrier must be consistent with the existing protocol, it is necessary to configure the bandwidth of the auxiliary carrier as the standard bandwidth of the TD-LTE system (1.4, 3, 5 , 10, 15 or 20MHz), when the bandwidth of an idle frequency band is greater than the standard bandwidth of the TD-LTE system, using the existing secondary carrier configuration and resource scheduling methods, only one or more can be selected in the idle frequency band Each frequency band with a bandwidth equal to the standard bandwidth of the TD-LTE system is assigned to one or more secondary carriers. Since only one frequency band with a bandwidth equal to the standard bandwidth of the TD-LTE system can be allocated to one secondary carrier, the configuration of the existing secondary carrier and resource scheduling methods limit the data offload capability of the auxiliary carrier

[0007] Further, since the bandwidth of the auxiliary carrier needs to be configured as the standard bandwidth of the TD-LTE system, when the bandwidth of an idle frequency band is greater than the standard bandwidth of the TD-LTE system, the idle frequency band is allocated to the auxiliary carrier The frequency bands cannot be effectively used, thus reducing the utilization rate of idle frequency bands

[0008] Furthermore, when there is only one narrowband interference frequency band between the two idle frequency bands, the two idle frequency bands can only be configured as two secondary carriers, especially when the two idle frequency bands do not meet the requirements of the TD-LTE system. When using the standard bandwidth, the two vacant frequency bands cannot be used, thereby reducing the utilization rate of the vacant frequency band

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