Energy-saving transfer path selection method for user side in heterogeneous network based on D2D relay

Abstract

The invention discloses an energy-saving transfer path selection method for a user side in a heterogeneous network based on a D2D relay. A relay link is selected in a classification manner by distinguishing a network type of a relay user. When a macro base station user is selected as the relay, the power consumption proportion of the macro relay user is controlled by adopting a minimum relay powerconsumption proportion method under the condition that the total power consumption of the relay link is ensured to be minimum; and when a small base station user is selected as the relay, the power consumption of the relay user is reduced by adopting the minimum relay power consumption proportion method under the condition that the lowest energy consumption required for normal communication of the link is ensured, at the same time, the effective rate of an uplink of the small base station relay user is adjusted, and the load of the relay user accessing the surrounding small base station is balanced. The method controls the total power consumption of the relay link, reduces the power consumption of the user terminal and balances the load of the surrounding receiving base station while meeting normal communication of the user, and is suitable for a real-time communication system.

Description

technical field [0001] The present invention relates to a method for selecting a transfer path of a user end during a dormant process of a base station, in particular to an energy-saving transfer path of a user end based on a device-to-device (D2D) relay during a dormant process of a small base station in a heterogeneous network The selection method belongs to the technical field of wireless communication. Background technique [0002] In recent years, under the condition of increasingly tight spectrum resources, in order to meet people's growing demands on the capacity and coverage of mobile communication networks, the deployment of small base stations in heterogeneous networks has become more and more dense, which has resulted in huge Network power consumption. With the rise of the concept of green communication, the base station dormancy method can effectively optimize the above problems. According to the "tide" phenomenon of users, it can reasonably transfer users and t...

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Problems solved by technology

In "Computer Engineering and Design", Volume 38, Issue 1, "Load Balancing Strategy Based on D2D Communication Mechanism in Heterogeneous Networks", an optimal relay selection method based on power consumption is proposed, which can effectively reduce the relay link The overall power consumption problem, but it does not consider the power consumption ratio of relay users in the entire link. The higher power consumption ratio is unfair to relay users

At the same time, the uplink of the relay user accesses the small base station based on the minimum signal to interference plus noise ratio (SINR) criterion, so that the users in the dormant area will centrally access the surrounding base stations through different relay users , so that the load of the surrounding base stations is unbalanced

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