Moving-load balancing method based on efficacy function in LTE (long term evolution) self-organized network

A mobile load balancing and self-organizing network technology, applied in network planning, electrical components, wireless communication, etc., can solve the problem of not being able to directly identify the load status of the user's neighborhood

Inactive Publication Date: 2013-07-24
XI AN JIAOTONG UNIV
View PDF3 Cites 16 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Usually, load balancing is performed for unsatisfied users at the edge of the cell. However, when the scene is more complex, for example, there are multiple adjacent hotspot cells in the network, not all edge users of the hotspot cells have good neighb

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Moving-load balancing method based on efficacy function in LTE (long term evolution) self-organized network
  • Moving-load balancing method based on efficacy function in LTE (long term evolution) self-organized network
  • Moving-load balancing method based on efficacy function in LTE (long term evolution) self-organized network

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0037] The present invention will be further described below in conjunction with drawings and embodiments.

[0038]Taking 3GPP LTE downlink multi-cell network load balancing as an example, considering a cellular network system, each cell is controlled by an evolved base station eNB located at its center, and the cells are no longer divided into sectors. Therefore, the concepts of cell and base station can be interchanged here. The reuse factor of the cell is 1, and the 12 adjacent subcarriers are regarded as a whole as a basic unit of resource allocation, which is called a physical resource block (Physical Resource Block, PRB). K represents a user set, and I represents a cell set. I i,k is the connection function, which satisfies:

[0039]

[0040] Each user can only be connected to one cell at most, so the connection function needs to satisfy the equation:

[0041] Σ i ∈ I ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention provides a moving-load balancing method based on an efficacy function in an LTE (long term evolution) self-organized network. The method comprises the following step of calculating efficacy functions in all adjacent cells of an unsatisfied user in an overload cell. If all the efficacy function values of the unsatisfied user equal to 0, the user does not switch a target cell, and the user is in a status of congestion or wire off; and otherwise, an adjacent cell with a maximum efficacy function value is selected to carry out switching. According to the method, an admittance control condition in a target cell is selected to be converted into a part of the efficacy function based on A3 inequality triggered switching, and a switching selection process of the unsatisfied user is simplified by combining the adjacent cell spectrum efficiency and a subnet loading balanced index. By the adoption of the efficacy function, the adjacent cell information channel and the loading situation of a peripheral user are clearly expressed, so that an approximate direction of a cell where the user is located is indirectly shown, the unsatisfied user is enabled to directly select the current most excellent target cell to carry out switching in a complex scene, and a successful rate and the efficiency of switching are greatly improved.

Description

technical field [0001] The invention relates to a system-level network simulation of a wireless communication system, in particular to a mobile load balancing algorithm for multiple users in an LTE self-organizing network (SON). Background technique [0002] The mobile load balancing (MLB) problem in LTE SON network means that the wireless cellular system can detect the overloaded cell without manual intervention, and automatically execute the load balancing algorithm to transfer part of the business in the overloaded cell to the relatively light load. Go to the neighborhood. The load transfer is mainly realized through the specific means of switching. In actual engineering, the A3 event is generally used to trigger the measurement report of LTE intra-frequency handover, and the coverage of the cell is indirectly changed by adaptively modifying the relative offset CIO of the cell and the hysteresis parameter Hyst, so that users with poor channel conditions at the edge of th...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): H04W16/22H04W36/22H04W36/30
Inventor 李锋耿莉娜刘莹刘哲段文磊
Owner XI AN JIAOTONG UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap