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Method for allocating inter-cell interference coordination (ICIC) resource

An interference coordination, inter-cell technology, applied in the direction of network traffic/resource management, electrical components, wireless communication, etc., can solve the problems of inter-cell interference, poor performance, poor flexibility, etc., achieve simple configuration, small computation, avoid message interactive effect

Active Publication Date: 2014-07-30
北京万海云科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method needs to exchange a large number of X2 interface messages, and for the source cell that receives the message, in order to avoid interference with the neighboring cell that sent the message, it will re-allocate resources, which is likely to cause interference with other neighboring cells. new intercell interference
[0011] On the other hand, the existing static ICIC resource division method has poor flexibility, especially poor performance for the increase of edge users

Method used

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  • Method for allocating inter-cell interference coordination (ICIC) resource
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  • Method for allocating inter-cell interference coordination (ICIC) resource

Examples

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example 1

[0076] figure 1 It is a flow chart of the method for dynamically adjusting resource allocation between cells in Example 1 of the present invention, such as figure 1 As shown, Example 1 of the present invention proposes a method for dynamically adjusting resource allocation between cells. This method does not require the support of interface signaling, and is implemented through the following steps:

[0077] 101. Taking a certain number of adjacent cells as a cell group, and reserving resources as round-robin resources of the cell group;

[0078] 102. When the public management entity receives the edge resource shortage information reported by the cells in the cell group, instruct all the cells in the cell group to start the preset algorithm;

[0079] 103. All the cells in the cell group calculate the round-robin sequence of the round-robin resources among the cells that report insufficient edge resource information according to the preset algorithm;

[0080] 104. The cells i...

example 2

[0084] figure 2 It is a flow chart of receiving edge resource shortage information reported by a cell in a cell group by a public management entity in Embodiment 2 of the present invention. like figure 2 As shown, the specific steps for the public management entity to receive the edge resource shortage information reported by the cells in the cell group are as follows:

[0085] 201, the public management entity sets the threshold value Th Dyn-start , and configure it to all the cells in the cell group, where the threshold value can be an empirical value;

[0086] 202. Each cell in the cell group calculates the edge resource occupancy rate U of the edge users in the cell Edge and threshold Th Dyn-start comparing;

[0087] 203, when U Edge >Th Dyn-start , the cell reports insufficient edge resources to the public management entity.

example 3

[0089] The specific steps of predetermining the situation of round robin resources in the third example of the present invention.

[0090] The simplest round-robin resource selection is to predetermine the round-robin resource and indicate it to each cell, and each cell uses the same block of round-robin resource fixedly.

[0091] (1) A certain number of adjacent cells are taken as a cell group, and resources are reserved as round-robin resources of the cell group.

[0092] Take a certain amount (n c ) adjacent cells, as a cell group, and reserve a piece of resources (n PRB PRBs), as round-robin resources among the cells with insufficient edge resources in the cell group.

[0093] (2) When the public management entity receives the edge resource shortage information reported by the cells in the cell group, it instructs all the cells in the cell group to start the preset algorithm.

[0094] The public management entity sets the threshold value Th Dyn-start , and configure it...

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Abstract

The invention discloses an inter-cell interference coordination resource allocation method. A certain number of adjacent cells are taken through a public management entity as a cell group, and resources are reserved as round-robin resources of the cell group. When the cell group When a cell reports insufficient edge resources to the public management entity, the public management entity instructs all cells in the cell group to start the algorithm. All cells in the cell group calculate the round-robin sequence of the round-robin resources among each cell based on the algorithm, and follow the The round-robin sequence uses round-robin resources to realize the dynamic interference coordination algorithm without exchanging information on the X2 interface, avoiding the interaction of loading information messages, which may cause new inter-cell interference with other neighboring cells, and static Resource division cannot adapt to the imbalance of edge resources between cells. At the same time, the configuration of the public management entity of the present invention is simple, the calculation of the algorithm is mainly completed inside the base station, and the calculation amount is small.

Description

technical field [0001] The present invention relates to the field of mobile communication, in particular to a method for allocating inter-cell interference coordination resources. Background technique [0002] The LTE (Long Term Evolution, Long Term Evolution) system adopts a flat network structure. In the LTE system based on OFDM (Orthogonal Frequency Division Multiplexing, Orthogonal Frequency Division Multiplexing) technology, the main interference affecting system performance comes from inter-cell interference. Therefore ICIC (Inter-Cell Interference Coordination, cell interference coordination) technology is one of the effective means to improve system performance. ICIC manages wireless resources to keep the interference level between cells under control, especially at the edge of the cell. Special management of wireless resources is required to meet the improvement of service quality of users at the cell edge of the LTE system. need. [0003] The basic idea of ​​inte...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W28/26H04W72/08H04W72/54
Inventor 岳然吴松卫琳白杰张连波
Owner 北京万海云科技有限公司