Small-cell switch control method based on interference contribution ratios (ICRs)

A switch control and small cell technology, applied in electrical components, wireless communication, etc., can solve the problem of frequent switch state transitions in small cells

Inactive Publication Date: 2019-03-26
CHONGQING UNIV OF POSTS & TELECOMM
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] (4) The problem of frequent switch state transitions in small cells

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  • Small-cell switch control method based on interference contribution ratios (ICRs)
  • Small-cell switch control method based on interference contribution ratios (ICRs)
  • Small-cell switch control method based on interference contribution ratios (ICRs)

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Embodiment Construction

[0047] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Before describing the embodiments of the present invention, it is beneficial to implement the present invention to establish relevant network environments and set initial conditions.

[0048] Assuming that each user UE is equipped with a single antenna, the small cell and the macro cell are connected through the X2 interface, and information including UE location, UE mobility, load, etc. can be transmitted. In the network system, there is a central controller at the network end, which is specially responsible for collecting relevant information reported by the UE and performing related small cell switch control operations.

[0049] Consider a dense heterogeneous network system applying the small cell switching mechanism. In this network system, S-gNBs are deployed within the coverage of macro cells, where macro cells occupy low frequency ban...

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Abstract

The invention relates to a small-cell switch control method based on interference contribution ratios (ICRs), and belongs to the technical field of mobile communication. The method includes: S1, acquiring an S-gNBs set which must be turned on or off in a current switch cycle and a switch judgement to-be-selected subset by a network end in the small-cell switch cycle according to information fed back by a user; S2, calculating target signal intensity corresponding to each small cell in the switch judgement to-be-selected subset in the current switch period; S3, calculating interference intensity values and an ICR threshold value of small cells in a current iteration process; and S4, comparing a maximum ICR value and the ICR threshold value in current iteration, updating the S-gNBs set which needs to be turned on or must be turned off in the network end, and executing small-cell related switch operations. According to the method, efficiency of S-gNBs can be improved, and interference among the small cells can be reduced; and at the same time, UE (User Equipment) information feedback quantity and measurement processes brought by a small-cell switch mechanism are also greatly reduced.

Description

technical field [0001] The invention belongs to the technical field of mobile communication, and relates to a small cell On / Off switching control technology (small cell On / Off switching technology) of an ultra-dense heterogeneous network system. Background technique [0002] In recent years, with the explosive growth of the volume and type of mobile data services, higher challenges have been posed to the network system capacity and data rate. In order to meet the mobile traffic growth of nearly 1000 times in the next 10 years, the fifth generation mobile communication (5G) has become a research hotspot in academia and industry. In order to improve the mobile data rate and network system capacity, many new technologies and solutions have emerged recently, such as massive MIMO, millimeter wave communication, and dense cellular heterogeneous networks. Among them, dense heterogeneous networks are considered to be the solution One of the most effective key technologies for syste...

Claims

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Application Information

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IPC IPC(8): H04W24/02H04W24/08
CPCH04W24/02H04W24/08
Inventor 申滨徐浪王欣吴和彪
Owner CHONGQING UNIV OF POSTS & TELECOMM
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