Small base station dynamic sleep method based on multi-cell cooperation

Abstract

The invention discloses a small base station dynamic sleep method based on multi-cell cooperation. The method includes a sleep mechanism, a sleep time self-adaptive algorithm, queuing theory analysis and a sleep cell selecting algorithm. The sleep mechanism comprises three states: an active state, a listen state and a sleep state. After a base station finishes a presently arrived UE session, partial modules are automatically turned off, a listen timer T0 is started, and the listen state is started; a small eNB sends a sleep request (S_request) to a macro cell after the timing is over; a macro eNB sends feedback acknowledge information to a small cell during the timing period; the small cell switches covered UE to the macro eNB; and the UE after the switching is connected with the macro cell and sends UE reports regularly.

Description

technical field [0001] The invention relates to the field of wireless communication, in particular to a small base station dynamic dormancy method based on multi-cell cooperation. Background technique [0002] In recent years, a wide range of heterogeneous networks has been formed in wireless mobile networks. With the development of wireless technology and the trend of future business diversification requirements, the traditional single network deployment of one micro cell and one base station coverage can no longer meet business diversity. and high-speed requirements, the deployment of the next-generation wireless network must be a diversified network deployment. This multi-network refers to the deployment of one or more micro Area (called smallcell), such as microcell, pico-cell, multi-hop relay and home base station that have been deployed in some business hot spots. Taking a macro cell with a radius of 500m as an example, generally 8-15 small cells can be deployed. The ...

AI Technical Summary

Problems solved by technology

However, the introduction of smallcell will also bring some problems to the system

As user business demands continue to rise in the future, the number of small cells deployed in microcells will inevitably increase, and overlapping coverage will inevitably occur. This will lead to adverse consequences. On the one hand, due to the relatively small coverage of small cells, the coverage The number of users is also relatively small, and the business is bound to be discontinuous, and the continuous work of small cells will cause a lot of waste of resources, which will increase the overall power consumption of the network and the deployment cost of the network to some extent. On the other hand, multiple The interference problem caused by overlapping coverage of small cells is serious

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