User level energy efficiency CoMP switching method based on LTE-A system

Abstract

The invention relates to a user level energy efficiency CoMP switching method based on an LTE-A system. The concept of user level is imported, an optimal cooperation set is selected for to-be-switchedusers of different levels to perform seamless switching. Compared with the traditional CoMP scheme, the scheme has the advantages that the personalized service requirements of the users of differentlevels can be met, because the users of high levels have high QoS requirements and are sensitive to delay in a communication process, so it is considered to preferentially select cooperation resourcesfor the users of high levels in a switching area when the resources are limited, thereby ensuring the communication quality of users of high levels and improving the switching success rate; and the users continuously measure the locations and the signal strength of mobile users in the movement process, and cooperation clusters are dynamically selected with the users as the center to meet the communication needs of the users. Switching users dynamically adjust the cooperation clusters of the high-level switching users in the movement process to meet the communication needs and to improve the switching efficiency; and in addition, from the perspective of energy efficiency, the cooperation cluster with the minimum power consumption is selected to improve the system energy efficiency while meeting the communication needs of the users.

Description

technical field [0001] The invention relates to a user-level energy efficiency CoMP switching method based on an LTE-A system, and belongs to the technical field of electronic communication. Background technique [0002] As people's lifestyles change, so do their communication needs. The faster pace of people's life makes the communication traffic on trains, subways, high-speed rails and other means of transportation with high-speed mobility increase year by year. Compared with stationary or low-speed terminals, high-speed mobile terminals on such high-speed vehicles face a series of technical problems in the communication process due to the influence of high speed: such as frequent handover, Doppler Frequency shift and rapid channel changes caused by Doppler, etc. These issues directly affect the quality of communication services for users. [0003] Frequent handover, Doppler effect and other problems will lead to the decline of the communication quality of the vehicle-gr...

AI Technical Summary

Problems solved by technology

Compared with stationary or low-speed terminals, high-speed mobile terminals on such high-speed vehicles face a series of technical problems in the communication process due to the influence of high speed: such as frequent handover, Doppler Frequency shift and rapid channel changes caused by Doppler, etc. These problems directly affect the quality of communication services for users

In short, the existing handover schemes cannot meet the personalized communication needs of users of different levels. During the handover process, the communication experience of some users is poor, and the fixed cooperation cluster size in the cooperation process does not take into account the important indicators of user QoS requirements and system energy efficiency.

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