HII (high interference indicator)/OI (overload indicator)-based coarse-grained dynamic frequency reuse method

A dynamic frequency and coarse-grained technology, applied in electrical components, wireless communication, network planning, etc., can solve problems such as frequent information interaction and high overhead between cells, and achieve the effect of realizing resources, reducing signaling overhead, and optimizing use

Inactive Publication Date: 2013-01-02
POTEVIO INFORMATION TECH CO LTD
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The dynamic interference coordination method requires frequent information interaction, and the overhead between cells is relatively large

Method used

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  • HII (high interference indicator)/OI (overload indicator)-based coarse-grained dynamic frequency reuse method
  • HII (high interference indicator)/OI (overload indicator)-based coarse-grained dynamic frequency reuse method

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Embodiment Construction

[0026] 3GPP decides to adopt an inter-cell interference coordination scheme based on high interference indication (HII) and overload indication (OI) information in the uplink. According to the network architecture of the Evolved Universal Terrestrial Radio Access Network (E-UTRAN), the wired interface X2 between adjacent base stations (eNode Bs) can be used to transmit HII and OI. When an eNode B allocates a physical resource block (PRB) to a user equipment (UE) at the edge of a cell, because it predicts that this user may interfere with adjacent cells and is also susceptible to interference from UEs in adjacent cells, it passes The HII notifies the sensitive PRB to neighboring cells. The eNode B can judge whether the UE is at the edge of the cell according to the reference signal received power (RSRP) value normally measured during the handover process of the UE, and of course further measurements can be used to make this judgment more accurate. After receiving the HII, the ...

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Abstract

The invention provides an HII (high interference indicator) / OI (overload indicator)-based coarse-grained dynamic frequency reuse method. The method includes: dividing a cell edge frequency band into three portions including a master control frequency band, a priority frequency band and a borrowing frequency band; judging that a user in a cell is an edge user or a center user, and if the user in the cell is the center user, dispatching the center user to the whole frequency band; if the user in the cell is the edge user, attempting to dispatch the edge user to the master control frequency band or the priority frequency band; if the edge user is dispatched to the priority frequency band, judging whether a valid HII on the priority frequency band is received or not, and if the valid HII on the priority frequency band is not received, dispatching the edge user to the priority frequency band; if the valid HII on the priority frequency band is received, judging whether load of the master control frequency band of the cell exceeds a preset load threshold, enabling an OI trigger mechanism to send an OI according to the interfered level of the priority frequency band if the load of the master control frequency band exceeds the preset load threshold, and dispatching the edge user to the borrowing frequency band; and otherwise, dispatching the edge user to the master control frequency band.

Description

technical field [0001] The present invention relates to the technical field of wireless communication, in particular to interference coordination technology, in particular to an HII / OI-based coarse-grained dynamic frequency multiplexing method. Background technique [0002] Interference coordination technology refers to restricting the available resources of a cell through inter-cell coordination, so as to improve the signal-to-interference ratio (SIR) of adjacent cells on these resources, the data rate and coverage of the cell edge. The resources include time domain resources, frequency domain resources and transmission power. The use of resources is limited in the frequency domain so that the frequency reuse factor is greater than 1. [0003] Inter-cell interference coordination includes static / quasi-static interference coordination and dynamic interference coordination. The static interference coordination method means that the negotiation and implementation of resource...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W16/06H04W16/14
Inventor 许晓东吴德壮陈鑫罗成金邱禹
Owner POTEVIO INFORMATION TECH CO LTD
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