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Interference coordination methods under heterogeneous network

A technology of interference coordination and heterogeneous network, applied in the direction of line failure/interference reduction, network traffic/resource management, electrical components, etc., can solve the problem of no solution, and achieve the effect of reducing resource waste and avoiding excessive influence

Inactive Publication Date: 2014-11-05
POTEVIO INFORMATION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The defect of this interference coordination method is that in order to correctly estimate the path loss from the MUE to the HeNB, the HeNB must know the time-frequency resource used by the target MUE to send the SRS, but there is no corresponding solution

Method used

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  • Interference coordination methods under heterogeneous network
  • Interference coordination methods under heterogeneous network
  • Interference coordination methods under heterogeneous network

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Embodiment Construction

[0031] In order to make the objects and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0032] In the interference coordination method under the first heterogeneous network of the present invention, before the method flow starts, the following presets are first performed:

[0033] ①HeNB reserves uplink resources in subframes for detecting SRS sent by MUE. There are many ways to realize the reservation. For example, every K subframes reserves part of the physical resource blocks of the last OFDM symbol of the subframe. (PRB), or select several subframes and reserve part of the PRB of the last OFDM symbol in each selected subframe;

[0034] ② Set the empty subframe pattern Pattern_i (0≤i≤n) of different levels of HeNB, among which the lowest level empty subframe pattern Pattern_0 is the mode that does not start sending empty subframes, and each level of e...

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Abstract

The invention discloses two interference communication methods under a heterogeneous network. A first method comprises the following steps that: when the path loss from a macro terminal (MUE) which is currently interfered most seriously to a family base station HeNB is correctly calculated based on the family base station HeNB, the number of hollow sub frames sent by the HeNB is adjusted, so that the purpose of downlink interference to the MUE is achieved, and simultaneously, the problem that the number of the hollow sub frames is too large and the self performance of the HeNB is affected is solved; and a second method comprises the following steps that: when the path loss from the MUE which is currently interfered most seriously to the HeNB is correctly calculated based on the HeNB, the downlink interference to the MUE is reduced by adjusting the sending power of the HeNB.

Description

technical field [0001] The invention relates to an interference coordination technology, in particular to an interference coordination method under a heterogeneous network. Background technique [0002] A co-channel heterogeneous network means that a macro cell managed by a macro base station (MeNB) deploys several micro cells managed by a micro base station, and the macro cell and the micro cell use the same frequency band. The aforementioned micro cell may be a home cell managed by a home base station (HeNB), or a Pico cell managed by a Pico, or the like. figure 1 It is a schematic structural diagram of a heterogeneous network, where the area bordered by a solid line is a macro cell, the area bordered by a dotted line is a micro cell, the terminal in the macro cell is a macro terminal (MUE), and the terminal in a home cell is a home terminal (HUE). [0003] The introduction of micro cells can improve system throughput and enhance the performance of users at the edge of ma...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L25/08H04W24/08H04W28/26H04W52/06H04W72/12
Inventor 吴联海池连刚张莉莉鲁智李婧陈哲
Owner POTEVIO INFORMATION TECH CO LTD
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