Geographic location database-based uplink enhancement method

Abstract

The invention discloses a geographic location database-based uplink enhancement method. The method comprises the following steps: a master system transmits a request of recovering the available carrier frequency and protective region information to a geographic location database; the geographic location database transmits a release command of the available carrier frequency and the protective region information to an affected base station; the base station estimates the disturbed condition of the master system caused by the served users, and divides the users into different regions according to the disturbed condition; the base station distributes scheduling information of uplink and downlink carrier frequencies to the users in different regions, and informs the geographic location database of updating the usage information of the available carrier frequency. By the adoption of the geographic location database-based uplink enhancement method, the available frequency spectrum utilization rate of secondary systems can be effectively improved, and the throughput capacity of the uplink is increased, so that the network performance and the communication service quality of an LTE (long term evolution) system are guaranteed.

Description

technical field [0001] The invention relates to an uplink enhancement method, in particular to an uplink enhancement method based on a geographic location database, and belongs to the technical field of wireless communication. Background technique [0002] Cognitive radio is also called smart radio. Its core idea is to realize dynamic carrier frequency allocation and carrier frequency sharing through carrier frequency sensing and intelligent learning capabilities of the system. It is flexible, intelligent, and reconfigurable. Cognitive radio perceives the external environment and uses artificial intelligence technology to learn from the environment, and purposely changes certain operating parameters (such as transmission power, carrier frequency and modulation technology, etc.) in real time to adapt its internal state to the received wireless information. Statistical changes of signals, so as to realize highly reliable communication at any time and any place and efficiently ...

AI Technical Summary

Problems solved by technology

[0006] At the current stage, there are two deficiencies in cognitive TD-LTE wireless networks: on the one hand, when the primary system requests to use its authorized carrier frequency, users in the secondary system that do not support carrier frequency aggregation must deactivate the carrier frequency and force switching to its own authorized frequency

When the macro base station deactivates the carrier frequency, the throughput of the uplink decreases, resulting in a decrease in the service quality of the secondary user communication

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