Dynamic spectrum resource allocation method and system between two RATs

Abstract

The invention discloses a dynamic spectrum resource allocation method and system between two RATs. According to the method, a spectrum resource is divided into a fixed frequency band DB and a flexible frequency band FB; the fixed frequency band DB is allocated to two RATs statically and the flexible frequency band FB is allocated to two RATs dynamically, wherein the dynamic allocation mode comprises two modes of initiative switching and passive switching; dynamic spectrum resource allocation is performed for one time at each time interval delta t1, when the delta t2 is larger than the delta t1, the initiative switching mode is adopted, and when the delta t2 is equal to the delta t1, the passive switching mode adopted; the system comprises a dynamic spectrum allocation unit DFDU, a network monitoring and reporting unit and a spectrum configuration unit. The method and system disclosed by the invention are used under the condition that the two RATs coexist, can automatically allocate spectrums according to load conditions in the network, then balance system loads and improve the whole capacity of the system and increase the utilization ratio of spectrums.

Description

technical field [0001] The invention belongs to the technical field of wireless communication, relates to dynamic spectrum resource allocation, and in particular to a method and system for dynamic spectrum resource allocation between two RATs. Background technique [0002] Wireless spectrum is a limited resource with economic and social value, which is currently managed and authorized by the state. Studies have shown that the most prominent problem in the current wireless spectrum utilization is the low overall spectrum utilization efficiency. Through actual measurement, some frequency bands, some places and some times are seriously insufficient in spectrum, such as the frequency band around 2G; while other frequency bands, other places and other times have a large surplus of spectrum, such as the utilization rate of the 3-4GHz frequency band is only 0.5%, 4 The utilization rate of ~5GHz frequency band is less than 0.3%. [0003] The main reasons for the above radio freque...

AI Technical Summary

Problems solved by technology

This method is easy to manage, but there are many disadvantages: when the business volume is large, its own frequency band may not be enough, causing the user's service request to be rejected; when the business volume is small, its own frequency band may not be fully utilized, resulting in spectrum resources waste

[0005] The dynamic spectrum allocation strategy needs to change the overall structure of the existing spectrum allocation, involving spectrum managers. Although it is the fundamental means to realize multi-system spectrum sharing and improve spectrum utilization, there are still some difficulties in its implementation

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