A heterogeneous cellular network handover selection method and system oriented to terminal energy saving

Abstract

The invention provides a heterogeneous cellular network switching selection method oriented on energy saving of a terminal. The heterogeneous cellular network switching selection method comprises the following steps that: (1), the terminal measures the signal strength of a service base station and an adjacent base station according to a measurement rule; when a switching trigger event occurs, a measurement report is reported to the service base station; and the measurement report includes the signal strength of a candidate base station; (2), the service base station requests for obtaining the transmitting power and the interference noise power of the candidate base station from the adjacent base station; (3), the terminal transmitting power of the connected candidate base station is obtained according to a pre-set channel lowest signal-to-interference-noise ratio, the signal strength of the candidate base station and the transmitting power and the interference noise power of the candidate base station; and (4), a target switching base station is selected from the candidate base station according to a switching strategy including the transmitting power of the terminal. The invention further provides a heterogeneous cellular network switching selection system oriented on energy saving of the terminal.

Description

technical field [0001] The invention belongs to the field of mobility management of wireless cellular networks, relates to cell switching of ultra-dense heterogeneous networks, and in particular to a method and system for switching selection of heterogeneous cellular networks oriented to terminal energy saving. Background technique [0002] With the rapid development of the mobile Internet and the popularization of mobile terminals, the service data traffic of the mobile network shows an exponential growth trend. How to meet the rapidly increasing data traffic demand of users has become one of the biggest challenges faced by telecom operators. [0003] A heterogeneous cellular network emerges as the times require, which can further increase network data traffic and meet user needs to a certain extent. Heterogeneous cellular network refers to the introduction of other communication methods within the coverage area of ​​macro base stations to strengthen the coverage of specifi...

AI Technical Summary

Problems solved by technology

From the perspective of the terminal, when the uplink channel is enhanced by interference from neighboring users, the terminal will be forced to increase its transmit power to meet the signal-to-noise ratio of the uplink channel, and increasing the terminal's transmit power will inevitably consume a large part of the terminal's power

In addition, the existing network handover selection methods are mostly based on the handover algorithm recommended by 3GPP, and only use the signal strength of candidate base stations as the decision attribute for cell handover selection, and select the base station with the highest signal strength among the candidate base stations as the handover target base station. Terminal energy consumption was considered, but terminal energy saving was not realized

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