Mobility management method based on clustered superdense small network in 5G system

Abstract

The invention provides a mobility management method based on a clustered superdense small network in a 5G system. The mobility management method comprises the following steps: dividing a superdense cell into a plurality of microcell clusters, wherein each microcell cluster has a common pilot frequency; predicting the channel condition of the cell by using a birth-death model, and according to the quality of a received cell signal, comprehensively considering the business condition and the mobility state of a user terminal and selecting a proper base station as a switching target, wherein the blocking rate of new equipment calling and switching can be obtained, a correct switching strategy is established, the switching success rate is improved, and the call drop rate of the user terminal and the blocking rate of calling are reduced; when equipment is in an idle state and the user terminal is in a low-speed state, switching to a pilot frequency base station of a microcell; when the user terminal is in a medium-speed or high-speed state, switching to a macro base station; when the equipment is in a connection state, namely when a business service exists, if the user terminal is in the low-speed state, switching to a small base station of the microcell; when the user terminal is in the medium-speed or high-speed state, switching to the macro base station.

Description

technical field [0001] The present invention relates to the technical field of mobile communication, in particular to a mobility management method based on clustered ultra-dense small networks in a 5G system. Background technique [0002] In future mobile networks, traditional high-power macro base stations and a large number of low-power small base stations will be deployed. In theory, the overall network capability is related to the number of cells per unit area. In a densely deployed network, both useful signals and signal interference will be strengthened, and handoffs will be frequent in the mobility management of mobile operators. [0003] In future wireless networks, there are two ways to achieve high throughput, including a large number of MIMO antennas and ultra-dense network deployment. A large number of MIMO antennas are used on the base station. The performance of MIMO will be limited due to space constraints, and the system will be saturated. The TDD system i...

AI Technical Summary

Problems solved by technology

Nowadays, with the development of mobile networks, the types of services are diversified, and the mobile complexity of user equipment is increasing. The original cell handover mechanism can no longer adapt well to the complex network environment.

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