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Regional load balancing method in cellular mobile communication system

A cellular mobile communication and load balancing technology, which is applied in wireless communication, network traffic/resource management, electrical components, etc., can solve the problems of heavy load, many times of load balancing, and inability to reduce the load, etc., and achieve the effect of reducing the number of times

Active Publication Date: 2012-03-28
XIDIAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The 3rd Generation Partnership Project 3GPP Long Term Evolution system can provide users with richer multimedia services with its higher bandwidth, but operators are most concerned about obtaining higher profits through effective control of operation and maintenance costs
After the end of this load balancing, only the load of cell 7 is reduced, but the load of cell 12 and cell 13 is not reduced. After a period of time, cell 12 and cell 13 will also trigger MLB, resulting in figure 1 The number of load balancing in the shown area increases, and cell 12 may choose cell 7 for load balancing, which will cause the load of cell 7 to increase again, and cell 7 will soon trigger MLB again, forming a shock
[0006] To sum up, the existing load balancing has the following disadvantages: First, each load balancing only considers a single cell pair, which cannot reduce the load of other cells, resulting in an increase in the number of load balancing in the area; A cell triggers load balancing too many times, which affects the quality of service of users in the area and the improvement of system performance

Method used

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  • Regional load balancing method in cellular mobile communication system
  • Regional load balancing method in cellular mobile communication system
  • Regional load balancing method in cellular mobile communication system

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Embodiment Construction

[0040] The application scenarios of the present invention are as figure 2 As shown, the system consists of multiple Long Term Evolution LTE cells. Each regular hexagonal cell with a black solid line in the figure represents an LTE cell, and the adjacent cells of cell 1 are cells 2, 3, 4, 5, 6, and 7.

[0041] refer to image 3 , the regional load balancing method that the present invention proposes, comprises the following steps:

[0042] Step 1, regional load balancing initialization

[0043] 1a) Cell 1 and its neighboring cells 2, 3, 4, 5, 6, and 7 are combined into a load balancing area, wherein cell 1 is the target cell, and a regional load balancing trigger threshold ρ″ is set, where ρ″ is greater than 0.5 and less than a constant of 1;

[0044] 1b) Record the mobility parameter values ​​of cell 1 and its adjacent cells 2, 3, 4, 5, 6, and 7, and count the physical resource blocks of cell 1 and its adjacent cells 2, 3, 4, 5, 6, and 7 occupancy rate ρ i , i=1, 2, ...,...

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PUM

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Abstract

The invention discloses a regional load balancing method in a cellular mobile communication system, mainly solving the limitation problem that only single cell pair is considered in load balancing behaviour in an advanced international mobile telecommunication system (IMT-Advanced system). The method is mainly characterized in that 1, a load balancing scene is expanded to a region formed by multiple cells from a single cell pair; 2, through constructing a utility function, each cell in the load balancing region carries out load balancing by taking utility value maximization as a target; and 3, CIO (cell individual offset) of the cell relative to a specific adjacent cell is changed to realize switching and load transferring of a user. The regional load balancing method disclosed by the invention accords with the distributed characteristic of self-organized network architecture of the IMT-Advanced system; since a multi-cell linkage policy is adopted, system average blocking rate is effectively reduced, service quality of the users in the system and load balancing convergence rate are improved, and oscillation problem of regional load balancing is avoided.

Description

technical field [0001] The present invention relates to the field of wireless communication, in particular to the cell load balancing in the advanced international mobile communication IMT-Advanced system architecture, specifically, multiple cells in an area perform load balancing at the same time, which can be used to balance the load in the communication system. Background technique [0002] The 3rd Generation Partnership Project 3GPP Long Term Evolution system can provide users with richer multimedia services with its higher bandwidth, but operators are most concerned about obtaining higher profits through effective control of operation and maintenance costs . Therefore, controlling the cost of operation and maintenance in LTE systems will become a very challenging problem. The 3GPP proposes a new operation and maintenance strategy for the long-term evolution system, that is, the long-term evolution system operator can effectively reduce the operation and maintenance cos...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W28/08H04W36/22
Inventor 盛敏田海鹏黄超史琰郭重涛李建东李红艳张琰王亚东钱胜笑齐鑫迟凯张龙
Owner XIDIAN UNIV
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