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A method and device for load balancing

A load balancing and equalizing technology, applied in the field of communication, can solve problems such as high-load cell interference, achieve simple implementation, avoid spectrum efficiency reduction, and improve system performance

Active Publication Date: 2019-07-26
DATANG MOBILE COMM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0015] Embodiments of the present invention provide a method and device for load balancing, which are used to effectively select a load balancing target cell, and solve the problem of interference caused by user adjustment to high-load cells after balancing. The specific technical solutions provided by the embodiments of the present invention are as follows:

Method used

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  • A method and device for load balancing
  • A method and device for load balancing
  • A method and device for load balancing

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Embodiment 1

[0356] The specific scene is Figure 4 shown.

[0357] The central cell 0 is in a high-load situation, and the expected value of the calculated available PRB utilization rate exceeds the standard, triggering the load balancing adjustment process, and obtaining the candidate neighbor cell group according to the statistical results of the handover frequency between itself and the surrounding neighbor cells, and sending the candidate neighbor cell group Each neighboring cell in the cell group sends a load balancing request message.

[0358]Here you can choose to send the load balancing request message only once, but because the high-load cell may need several adjustment cycles to complete the load balancing and realize the effective reduction of its own load, therefore, it is preferable to send the load balancing request message periodically here, or send once A load balancing request message, but the message carries an order indicating that each cell in the candidate cells peri...

Embodiment 2

[0383] Specific scenarios such as Figure 5 As shown, the central cell 0 is in a high load situation, and the expected value of the calculated available PRB utilization exceeds the standard, triggering the load balancing process, and obtaining the candidate neighbor cell group 0. At this time, cell 1 is also in a high load situation, and a load balancing process is triggered to obtain a candidate neighboring cell group 1 . Both the candidate neighbor cell group 0 and the candidate neighbor cell group 1 include the neighbor cell Cell2

[0384] After the neighboring cell Cell2 receives the load request, because its own load is low, it is not in the load balancing state, so it sends its real available load information to the neighboring cell through the X2 interface, but in order to avoid Cell2 accepting the load of two cells at the same time, the In the case of a high load, Cell2 points to a cell to feed back its real available load, and feeds back the available load to another...

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Abstract

The invention relates to the field of communication, and in particular relates to a load balancing method and a load balancing device, used for effectively selecting a load balancing target cell, and solving the problem that interference is brought to high-load cells by adjustment of users after balancing. The method comprises the steps that the first cell counts a result based on switching frequency between itself and each peripheral neighbor cell, acquiring an alternative neighbor cell group, and sending a load balancing request message; selecting a first target neighbor cell group from the alternative neighbor cell group according to a load balancing response message received within a preset time period, and further selecting a second target neighbor cell group according to a cell individual offset (CIO) value, sending a CIO adjustment step-length negotiation message to each neighbor cell in the second target neighbor cell group, and determining a CIO adjustment step-length of each neighbor cell in a third target neighbor cell group. According to the method, the users needing to be balanced are selected within the own jurisdiction range of the cell, and the load balancing notice messages are sent to the users, thus being simple and convenient, and effectively achieving load balancing.

Description

technical field [0001] The present invention relates to the communication field, in particular to a load balancing method and device. Background technique [0002] In an actual network, overlapping coverage or unbalanced load often occurs among multiple cells of the same frequency. In this case, through an automatic load balancing algorithm, that is, adjusting the handover parameter CellIndividualOffset between cell pairs, some users in high-load cells can be balanced to low-load cells with overlapping coverage. [0003] In order to better balance the load of multiple cells and reduce manual participation and optimization work, the concept of automatic load balancing (MLB) was proposed in LTE 3gpp R9. By modifying the handover parameters, the cells where some users reside or connect are redistributed. In this way, the load distribution of each cell is balanced. The two key steps of MLB and the main considerations of load balancing are: [0004] First, the selection of loa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W28/08H04W36/22
Inventor 贾保灵罗晨
Owner DATANG MOBILE COMM EQUIP CO LTD