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Interference detection method and terminal

A technology of interference detection and interference covariance, applied in the field of communication, can solve problems such as the inability to accurately determine cell interference

Active Publication Date: 2017-09-26
DATANG MOBILE COMM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide an interference detection method and a terminal to solve the problem that the existing technical solutions cannot obtain whether there is an interference cell on the physical resource block occupied by the terminal under the current serving cell based on the blind detection of the terminal. interference, it is impossible to accurately determine whether there is cell interference

Method used

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  • Interference detection method and terminal

Examples

Experimental program
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Effect test

Embodiment 1

[0127] Such as figure 1 As shown, the interference detection method in Embodiment 1 of the present invention includes:

[0128] Step 11, determining the first interfering cell of the current serving cell of the terminal;

[0129] It should be noted that, in this embodiment, the first interfering cell is the strongest interfering cell of the terminal under the current serving cell. In step 11, the terminal may determine the strongest interfering cell according to its own received signal.

[0130] Step 12, obtaining the physical downlink shared channel PDSCH data power and the common reference signal CRS pilot power of the first interfering cell on the physical resource block PRB occupied by the current serving cell of the terminal;

[0131] In this embodiment, the calculation of the first power allocation value of the strongest interfering cell is mainly performed by using the PDSCH data power and the CRS pilot power, and the first power allocation value in the present inventi...

Embodiment 2

[0138] Such as figure 2 As shown, the interference detection method in Embodiment 2 of the present invention includes:

[0139] Step 21, determining the first interfering cell of the current serving cell of the terminal;

[0140] Wherein, the first interfering cell refers to the strongest interfering cell of the current serving cell.

[0141] Step 22, obtaining respectively the CRS pilot sequence and the first frequency-domain received signal of the first interfering cell located on the PRB;

[0142] The CRS pilot sequence and the first frequency-domain received signal here also refer to the CRS pilot sequence and the first frequency-domain received signal of the strongest interfering cell located on each PRB.

[0143] Step 23, performing channel estimation on the first interfering cell according to the CRS pilot sequence and the first frequency-domain received signal, to obtain a first channel estimation result;

[0144] Step 24: Acquire the PDSCH data power of the first ...

Embodiment 3

[0173] Such as Figure 5 As shown, the interference detection method in Embodiment 3 of the present invention includes:

[0174] Step 51, determining the first interfering cell of the current serving cell of the terminal;

[0175] Wherein, the first interfering cell refers to the strongest interfering cell of the current serving cell.

[0176] Step 52, acquiring the physical downlink shared channel PDSCH data power and common reference signal CRS pilot power of the first interfering cell on the physical resource block PRB occupied by the current serving cell of the terminal;

[0177] Step 53, acquiring a first power allocation value of the first interfering cell according to the PDSCH data power and the CRS pilot power;

[0178] Step 54, divide the data area into intervals according to the power allocation value in the received power allocation set;

[0179] It should be noted that the power allocation set is pre-configured by the base station side and delivered to the term...

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Abstract

The invention provides an interference detection method and terminal, and relates to the technical field of communication. The method comprises the steps: determining a first interference cell of a current service cell of a terminal; obtaining the data power of a PDSCH (physical downstream shared channel) on a PRB (physical resource block) occupied by the first interference cell at the current service cell of the terminal and the pilot frequency power of a CRS (common reference signal); obtaining a first power distribution value of the first interference cell according to the data power of the PDSCH and the pilot frequency power of the CRS; determining whether the PRB has the interference from the first interference cell or not according to the first power distribution value. According to the technical scheme of the invention, the method achieves the precise judgment of the cell interference on the basis of the PRB, and improves the interference detection accuracy.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to an interference detection method and a terminal. Background technique [0002] The LTE-A (Long Term Evolution-Advanced, that is, the evolution of LTE) Rel-12 system introduces NAICS (Network Assisted Interference Cancellation and Suppression, network-assisted interference suppression and deletion) technology, and the network side sends NAICS-related high-level information Signaling information, the UE detects the information of its own cell according to the partial information of the interfering cell in the high-level signaling and the blind detection of its own neighboring cell information, so that the target signal can obtain good performance, thereby improving the system throughput in the interference scenario quantity. However, the distribution of complete and accurate interfering cell information will, on the one hand, limit the flexibility of the base statio...

Claims

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Application Information

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IPC IPC(8): H04B17/345H04W24/08
CPCH04W24/08H04B17/345
Inventor 熊芳黄秋萍陈润华
Owner DATANG MOBILE COMM EQUIP CO LTD
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