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Optimized inter-cell interference coordination method and base station

A technology of inter-cell interference and coordination methods, applied in network traffic/resource management, electrical components, wireless communication, etc., can solve problems such as waste of resources

Active Publication Date: 2013-06-26
北京万海云科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0015] It can be seen that both the above two schemes have the problem of resource waste, and this problem is more prominent when the number of edge users varies greatly between cells

Method used

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  • Optimized inter-cell interference coordination method and base station
  • Optimized inter-cell interference coordination method and base station
  • Optimized inter-cell interference coordination method and base station

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Embodiment Construction

[0041] image 3 It is a flowchart of an optimized inter-cell interference coordination method in the present invention. The method is applicable between two base stations respectively controlling two adjacent cells of the same frequency, the two base stations are respectively a source base station and a target base station, and the two cells are respectively a source cell and a target cell, then the Methods include:

[0042] Step 301, when the source base station detects that the interference experienced by the source cell on a physical resource block PRB exceeds the high interference threshold of the uplink interference overload indication UL OI, but the occupancy rate of the PRB by the source cell is lower than the preset value , the source base station marks the PRB as a potential interference state in the uplink high interference indication information element in the load indication message sent to the target base station, and starts the timer T1.

[0043] In this step, ...

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Abstract

The invention discloses an optimized inter-cell interference coordination method and a base station. The method comprises the following steps of: when a source base station detects that the interference of a source cell on a PRB (Physical Resource Block) exceeds the high interference threshold of UL OI (Up Link Interference-Overload Indication) but the occupancy rate of the PRB by the source cellis lower than a preset value, marking the PRB as a potential interference state in a UL OI cell in load indicating information sent to a target base station, and starting a timer T1; if the interference of the source cell on the PRB is always detected to exceed the high interference threshold of the UL OI before timeout is indicated on the timer Ti, marking the PRB, in the subsequently-sent load indicating information, still as the potential interference state; and after the target base station receives the load indicating information, starting a timer T2, and reducing the interference of thePRB marked as the potential interference state before timeout is indicated on the timer T2. The technical scheme provided by the invention is beneficial to the prevention of resource waste.

Description

technical field [0001] The invention relates to the technical field of mobile communication, in particular to an optimized inter-cell interference coordination method and a base station. Background technique [0002] A Long Term Evolution (LTE, Long Term Evolution) system adopts a flat network structure. figure 1 It is the structure diagram of the existing LTE network. Such as figure 1 As shown, the Evolved Universal Terrestrial Radio Access Network (E-UTRAN, Evolved Universal Terrestrial RadioAccess Network) is composed of serving base stations (eNB, evolved NodeB), and the eNBs are interconnected by the X2 interface; the evolved packet core network ( Evolved Packet Corenet work (EPC) includes a Serving Gateway (S-GW, Serving Gateway) and a Mobility Management Entity (MME, Mobility Management Entity), and interacts with the eNB through the S1 interface. The ICIC function is located in the eNB. [0003] In an LTE system based on Orthogonal Frequency Division Multiplexing...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W28/16H04W24/02
Inventor 岳然
Owner 北京万海云科技有限公司