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Interference coordination method and base station for uplink FDM cellular communication system

A cellular communication system and interference coordination technology, which is applied in the field of uplink frequency division multiplexing cellular communication system interference coordination and base stations, and can solve the problems of high data transmission rate of border user equipment, difficulty in dealing with small-scale and sudden interference, etc.

Inactive Publication Date: 2009-08-12
SHARP KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The advantage is that the interference coordination effect is better, and the data transmission rate of the border user equipment is higher. The disadvantage is that it is difficult to deal with small-scale and sudden interference

Method used

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  • Interference coordination method and base station for uplink FDM cellular communication system
  • Interference coordination method and base station for uplink FDM cellular communication system
  • Interference coordination method and base station for uplink FDM cellular communication system

Examples

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Effect test

example 1

[0091] Example 1: Assuming that the sending direction of the strong interference indication is directional sending, the schematic diagram of its implementation is as follows Figure 4 As shown, the base stations 200-204 are based on image 3 The determined strong interference spectrum resource coordination mode, the strong interference spectrum resource is sent to the adjacent base station to be interfered by using the strong interference indication 320-345 through the X2 interface 300-304, taking the base station 200 as an example, it sends the base station 200 to the base station The strong interference spectrum resources at 202 are sent to the base station 202 through the X2 interface 300 using the strong interference indication 320; It should be pointed out that the selection of the strong interference indication method for directional transmission is only to illustrate the implementation of this patent, and does not mean that the present invention requires the above restr...

example 2

[0092] Example 2: Assuming that the transmission direction of the interference overload indication is omnidirectional transmission, the implementation diagram of this method is as follows Figure 5 As shown, when the user equipment in the base station 200 sends the overloaded directional interference 450 (the arrow represents the direction of interference) to the base station 202 that is greater than the set threshold, that is, when it is overloaded, the base station 202 will communicate with the base stations 200, 204 and others through the X2 interface. The adjacent base station omnidirectionally sends the interference overload indication 455 and indicates the frequency band of the interference overload, which is the frequency band where the interference signal from the base station 200 is located. It should be pointed out that the selection of the omnidirectional transmission interference overload indication method is only for illustrating the implementation of this patent, ...

example 3

[0102] Example 3: Determine that the frequency band size of the uplink reference signal is 6 spectrum resource blocks, and then determine that the frequency band size of the strong interference indication is twice the frequency band size of the uplink reference signal, that is, 12 spectrum resource blocks, and then determine the frequency band of the interference overload indication The size is 1 / 2 of the frequency band size of the uplink reference signal, that is, 3 spectrum resource blocks. In addition, the frequency band indicated by interference overload and the frequency band indicated by strong interference are continuously distributed on the system bandwidth, and the lowest frequency band of the interference overload indication is Spectrum resource block No. 1, the lowest frequency of the lowest frequency band indicated by strong interference is also No. 1 spectrum resource block, the schematic diagram of the setting of the frequency band indicated by the interference ove...

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Abstract

The invention provides an interference coordination method for an uplink frequency division multiplexing cellular communication system, which is used for combining interference overload indication and strong interference indication. The interference coordination method comprises the following steps that: a base station, according to related parameters of user equipment, judges the situation that the user equipment is interfered and / or the situation that the user equipment interferes other cells, and performs the coordination of spectral resources; the base station sets at least one of interference overload indication threshold, sending direction of the interference overload indication and / or the strong interference indication, frequency bands of the interference overload indication and the strong interference indication, trigger mechanism of the strong interference indication, and replacement mechanism between the interference overload indication and the strong interference indication to realize the mutual combination of the interference overload indication and the strong interference indication; and the base station executes the interference overload indication and the strong interference indication according to the preset related parameters. The method has the advantages of better interference coordination effect, stronger response ability to burst interference and the like. In addition, the invention also provides the base station for realizing the interference coordination method.

Description

technical field [0001] The present invention relates to a method for reducing co-channel interference in the field of communication technology and a base station using the method, more specifically, to a method for inter-cell communication in an uplink frequency division multiplexing (FDMA) cellular system to achieve interference coordination method and a base station using the method. Background technique [0002] 3GPP (Third Generation Partnership Project) organization is an international organization in the field of mobile communication, and she plays an important role in the standardization of 3G cellular communication technology. In the 6th edition of the 3GPP standard, HSUPA (High Speed ​​Uplink Packet Access) technology is introduced, which is based on OFDMA (Orthogonal Frequency Division Multiple Access) technology, and uses fast uplink scheduling technology in the base station to enable different user equipment Different frequency spectrum resources are used when s...

Claims

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Application Information

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IPC IPC(8): H04W28/02H04W72/08H04W72/12
Inventor 丁铭刘仁茂梁永明陈晨黄磊
Owner SHARP KK
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