A method for activating small base stations in cooperative hetnet

Abstract

The invention discloses a method for collaborating activation of small base stations in HetNet and belongs to the technical field of wireless communication. The method comprises the steps of joint processing of user-small base station correlation, power control and a multi-antenna linear receiver. According to the method, user service arrival fluctuation is considered, macro base stations are adopted to activate appropriate small base station cluster to perform acceptance, and accordingly energy consumption and whole interference level are reduced. The method is a method for performing collaborative processing of the macro base stations and the small base stations in a same-frequency networking scene. The expenditure (spreading codes are not considered) for 1bit forward signaling and 1bit feedback signaling between the macro base stations and the small base stations is only needed, and global energy consumption optimization of an approximate network can be achieved under the condition that the requirements for receiving target signal to interference plus noise ratio thresholds of all users are met. The method enables a system to be stable, and required calculation process is simple.

Description

technical field [0001] The present invention belongs to the technical field of wireless communication, and more particularly, relates to a method for activating small base stations in a cooperative HetNet. Background technique [0002] In the existing cellular network, users need high-speed and high-quality services such as high-definition video, which cannot be provided by the current cellular system, and clean spectrum resources are scarce and expensive. One of the main solutions at present is to increase the throughput rate per square meter by adding more dense coverage of small base stations and networking on the same frequency - small base station close-range coverage can provide higher signal strength and share the load of the macro cellular system . But at the same time, due to the arrangement of small base stations, interference between cells will be seriously increased. [0003] Multi-cell joint beamforming is an important interference management technology. Curr...

AI Technical Summary

Problems solved by technology

At this stage, when the uplink traffic arrives, there is a lack of a set of joint base station selection (activation) and beamforming working solutions in HetNet (heterogeneous network)

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