Unlock instant, AI-driven research and patent intelligence for your innovation.

Inter-cell interference coordination (ICIC) method based on sector splitting and time division multiplexing

A time-division multiplexing, cellular system technology, applied in the field of cellular system interference coordination and suppression of co-frequency interference of adjacent cells in cellular systems, can solve problems such as performance limiting system throughput, low system frequency reuse level, etc. performance, improved throughput performance, and improved quality of service effects

Inactive Publication Date: 2017-07-25
UNIV OF ELECTRONICS SCI & TECH OF CHINA
View PDF2 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, the FFR technology makes the frequency reuse level of the system at a lower level, which not only suppresses the SINR (Signal to Interference plus Noise Ratio) of the cell edge users, but also limits the throughput performance of the system.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Inter-cell interference coordination (ICIC) method based on sector splitting and time division multiplexing
  • Inter-cell interference coordination (ICIC) method based on sector splitting and time division multiplexing
  • Inter-cell interference coordination (ICIC) method based on sector splitting and time division multiplexing

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] In this example: the number of subcarriers is 1024; the modulation method is QPSK modulation; the transmit power of the base station on each subcarrier is normalized to 1W; the path loss model is 3GPP TS 36.942.urban model; the small-scale fading model is EVA channel model ; Scheduling mode adopts polling mode (round robin); Other simulation parameters are clarified in Table 1.

[0029] Table 1 Embodiment 1 simulation parameters

[0030]

[0031] Step 1: first divide the three sectors of a single cell into six virtual sectors. Such as figure 2 As shown, sector A is split into virtual sectors 1 and 2; sector B is split into virtual sectors 3 and 4; sector C is split into virtual sectors 5 and 6;

[0032] Step 2: In time slot t, the base station uses two powers P_h and P_l, one high and one low, to alternately cover each virtual sector. Such as image 3 As shown, at time t, the base station covers all areas of virtual sectors 1, 3, and 5 with power P_h; covers vir...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention belongs to the field of communication anti-interference technologies, and relates to the fractional beamforming method, the frequency reuse method and other technologies, particularly to an inter-cell interference coordination (ICIC) method based on sector splitting and time division multiplexing. The method has the advantages that three original sectors of a cell are equally split into six virtual sectors, and a higher power and a lower power are alternately used at different times to serve users in the virtual sectors; and for every two adjacent cells, the cell using the higher power achieves a higher SINR of an edge area because the sectors of the other cell use the lower emitting power, and the cell using the lower power suspends service to edge users at a current time slot and centralizes resources for use by central users, so that the SINR performance and capacity performance of a system are improved.

Description

technical field [0001] The invention belongs to the technical field of communication anti-jamming, specifically a method for suppressing same-frequency interference of adjacent cells in a cellular system; more specifically, a cellular system interference coordination based on sector splitting and time division multiplexing (Inter-Cell Interference Coordination, ICIC) method; the present invention relates to partial beamforming method (Beamforming), frequency reuse method (Frequency Reuse) and other technologies. Background technique [0002] The LTE system adopts the same-frequency networking technology, so there is no same-frequency interference within a cell, but there will be same-frequency interference between cells. The most serious co-channel interference is at the edge of each cell. Such as figure 1 As shown, the specific description is as follows. [0003] Because of the adoption of OFDMA (Orthogonal Frequency-Division Multiple Access) technology, the communicatio...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): H04J11/00H04W16/28H04W52/24H04W52/26
CPCH04J11/005H04W16/28H04W52/241H04W52/265
Inventor 欧阳昊王鹏飞肖悦
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA