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Interference coordinating method and device for LTE (Long Term Evolution) system

A system interference and cell technology, applied in the field of mobile communication, can solve problems such as unstable RB utilization and co-channel interference, and achieve the effect of improving reliability and reducing performance loss

Inactive Publication Date: 2015-07-01
ZTE CORP
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  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to provide a method and device for LTE system interference coordination to solve the problem in the prior art that if the average RB utilization rate of a cell is low in a period of time, but the RB utilization rate of each TTI is unstable co-channel interference problem

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  • Interference coordinating method and device for LTE (Long Term Evolution) system
  • Interference coordinating method and device for LTE (Long Term Evolution) system
  • Interference coordinating method and device for LTE (Long Term Evolution) system

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Embodiment Construction

[0047] The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described below are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

[0048] figure 1 It shows a flow chart of a method for interference coordination in an LTE system provided by an embodiment of the present invention, as shown in figure 1 shown, including the following steps:

[0049]Step S101: Calculate the maximum number of RBs scheduled by the current TTI of the cell according to the average number of RBs scheduled by each TTI of the cell;

[0050] Step S102: Based on the maximum number of RBs, assign the number of RBs to each UE that needs to be scheduled in the current TTI of the cell;

[0051] Step S103: After the number of RBs allocated to each UE, start to allocate RB positions for each UE in the cell, so that th...

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Abstract

The present invention discloses an LTE system interference coordination method and device and relates to the technical field of mobile communications, said method comprising the following steps: calculating, in accordance with an average number of resource blocks (RB) in each TTI scheduling of a cell, the largest number of RB in a current TTI scheduling of a cell; on the basis of said largest number of RB, assigning RB to each UE requiring scheduling in the current TTI of said cell; after assigning RB to each UE, beginning to assign RB positions to each UE of said cell, causing the RB positions to which the UEs of the cell are assigned to be different from, or not entirely the same as, the RB positions to which the UEs of neighboring cells are assigned. The present invention allows for avoiding interference between a majority of neighboring cells secured to an RB segment, thus increasing the reliability of service channel transmission and reducing loss of system performance.

Description

technical field [0001] The present invention relates to the field of mobile communication technologies, and in particular to a method and device for interference coordination in LTE (Long Term Evolution, long-term evolution technology) co-frequency networking. Background technique [0002] The LTE system is a co-frequency network. In a co-frequency network system, co-frequency interference between cells is essential. How to reduce co-frequency interference between cells has always been the key to improving cell throughput. [0003] In the actual LTE system, the load of the cell is generally not too high, and the RB utilization rate of the cell will be at a relatively low level after a long period of statistics. On the TTI (Transmission Time Interval, transmission time interval), the utilization rate of the RB (Resource Block, resource block) of the cell fluctuates from high to low, which will cause the system to evaluate the interference of neighboring cells from large to sm...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W16/14H04W72/54
CPCH04W16/14H04L5/0037H04L5/0073H04W72/54H04W72/541H04W72/51H04L5/0007H04L5/0032
Inventor 冯波许倩倩
Owner ZTE CORP