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Radio base station and interference leveling method for mobile communication system

A technology for mobile communication systems and wireless base stations, applied in the field of mobile communication systems, can solve problems such as difficulty in satisfying conditional expressions, and achieve the effect of improving sector/user throughput

Inactive Publication Date: 2012-02-01
NEC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Conversely, when the offset value Ocn becomes smaller, it is difficult to satisfy the condition

Method used

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  • Radio base station and interference leveling method for mobile communication system
  • Radio base station and interference leveling method for mobile communication system
  • Radio base station and interference leveling method for mobile communication system

Examples

Experimental program
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Embodiment Construction

[0058] figure 1 It is a block diagram showing the structure of the mobile communication system 100 in the preferred embodiment of the present invention based on the LTE system. The mobile communication system 100 includes a core network 101 , radio base stations 102 , and mobile terminals 103 . exist figure 1 2 shows two wireless base stations 102-A, 102-B, but the number of wireless base stations is not limited to this, and can be set arbitrarily.

[0059] The core network 101 is connected to the radio base stations 102-A and 102-B via the S1 interface, and performs data transmission and data reception. The radio base stations 102-A and 102-B are arranged adjacent to each other, and are connected to each other using the interface X2. That is, the radio base stations 102-A and 102-B exchange information via the X2 interface.

[0060] The radio base station 102 manages a cell composed of sectors, and wirelessly transmits and receives data to and from a mobile terminal 103...

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PUM

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Abstract

In a mobile communication system, an interference leveling method is incorporated into a radio base station, which manages a cell having a sector structure, thereby leveling inter-sector interferences in upstream communications to improve the sector user throughputs. In the situation of congestions having occurred in a second sector adjacent to a first sector, if the upstream interference amount of the first sector is equal to or greater than a first threshold value and further the resource block usage rate of the first sector is equal to or less than a second threshold value, then an handover from the second sector to the first sector is promoted. That is, the handover from the second sector, in which the congestions have occurred, to the first sector having available resource blocks is promoted, thereby leveling the upstream interference amounts of the two sectors.

Description

technical field [0001] The present invention relates to a mobile communication system in which communication between mobile terminals is performed by a wireless base station that manages a cell composed of sectors, and more particularly to a method for balancing interference between sectors in uplink communication of wireless base stations. [0002] This application claims priority based on Japanese Patent Application No. 2009-48085 for which it applied in Japan on March 2, 2009, and uses the content here. Background technique [0003] Regarding mobile communication systems and mobile terminals, various technologies and specifications have been developed (for example, refer to Patent Document 1 to Patent Document 3, Non-Patent Document 1 and Non-Patent Document 2). [0004] In LTE (Long Term Evolution, Long Term Evolution), which is a new generation (3.9G) mobile communication standard, as a wireless access method, a single carrier frequency division multiple access method ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W36/20H04W36/08H04W36/22H04W36/38H04W92/20
CPCH04W36/20
Inventor 窪田光宏
Owner NEC CORP