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Interference coordination methods under heterogeneous network

An interference coordination and heterogeneous network technology, applied in network traffic/resource management, electrical components, wireless communication, etc., can solve problems such as no solution, achieve the effect of reducing resource waste and avoiding excessive impact

Inactive Publication Date: 2012-07-11
POTEVIO INFORMATION TECH
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  • Claims
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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 objectives and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0032] In the first interference coordination method under heterogeneous networks of the present invention, before the method flow starts, the following pre-settings are first performed:

[0033] ① The HeNB reserves the uplink resources used to detect the SRS sent by the MUE in the subframe. There are many ways to implement 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 a partial PRB of the last OFDM symbol in each selected subframe;

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

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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 interference coordination technology, in particular to an interference coordination method under heterogeneous networks. Background technique [0002] A co-channel heterogeneous network refers to a macro cell managed by a macro base station (MeNB) where several micro cells managed by a micro base station are deployed, 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 Pico. figure 1 It is a schematic structural diagram of a heterogeneous network, where the area bordered by the solid line is the macro cell, the area bordered by the dashed line is the micro cell, the terminal in the macro cell is the macro terminal (MUE), and the terminal in the home cell is the home terminal (HUE). [0003] The introduction of micro cells can increase system throughput and enhance the performance of users at the edge of macro...

Claims

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Application Information

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IPC IPC(8): H04W24/08H04W28/26H04W52/06H04W72/12
Inventor 吴联海池连刚张莉莉鲁智李婧陈哲
Owner POTEVIO INFORMATION TECH
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