System for detecting interference sources and method for detecting interference sources

Patent metadata

Field	Value
Publication number	US-10085271-B2
Application number	US-201615372408-A
Country	US
Kind code	B2
Filing date	Dec 8, 2016
Priority date	Aug 6, 2016
Publication date	Sep 25, 2018
Grant date	Sep 25, 2018

Abstract

A method for detecting a source of interference creates a sorting table according to distances between station devices and an access point (AP) device, and the created sorting table is sent to the AP device. The AP device determines upon a target device from the sorting table and controls the target device to acquire status and distance information between target device and AP device and send the information to the AP device. A value ε is computed according to the information sent by the target device and the calculated value ε is compared with a preset value k. The source of an interference, which affects the signal sent by the AP device, is calculated based on the comparison, and the AP device applies appropriate de-noising to the signal according to the determined interference source.

First claim

What is claimed is:

1. A system for detecting interference source, running in a network comprising an Access Point (AP) device and a number of Station (STA) devices, the AP device communicating with the STA devices and providing wireless access and data access service for the STA devices, the STA devices comprising a first STA device and a plurality second STA devices, the system comprising:
at least one processor; and
a plurality of modules which are collections of instructions executable by the processor, the plurality of modules comprising:
a first request module configured to, upon execution by the at least one processor:
control the AP device to send a first reading request to the first STA device;

a first response module configured to, upon execution by the at least one processor:
when the first STA device receives the first reading request, control the first STA device to acquire state information of the second STA devices, analyzes and calculates distance information between the second STA devices and the AP device, creates a sorting table according to the calculated distance information, and sends the created sorting table to the AP device;

a first receiving module configured to, upon execution by the at least one processor:
control the AP device to receive the sorting table sent by the first STA device;

a second request module configured to, upon execution by the at least one processor:
control the AP device to determine a target device among the second STA devices in the sorting table, and send a second reading request to the determined target device;

a second response module configured to, upon execution by the at least one processor:
control the target device to acquire a first distance information between the target device and the AP device and the state information of the target device when the target device receives the second reading request sent by the AP device, and send the first distance information and the state information to the AP device;

a second receiving module configured to, upon execution by the at least one processor:
control the AP device to receive the first distance information and the state information sent by the target device;

a computing module configured to, upon execution by the at least one processor:
compute a value ε according to the received first distance information and the state information sent by the target device;

a determining module configured to, upon execution by the at least one processor:
compare the value ε calculated by the computing module with a preset value k, determine whether a signal sent by the AP device is being interfered with by an interference source based on the comparison between the value ε and the preset value k, and determine the interference source affecting the signal sent by the AP device; and

a control module configured to, upon execution by the at least one processor:
control the AP device do de-noising according to the interference source determined by the determining module.

2. The system according to claim 1 , wherein the computing module controls the AP device to change the value of the elements of a first matrix A to get a third matrix C according to the first distance information and the state information sent by the target device, and computes the value ε based on a first formula of

ɛ
=

∑

j
=
1

n

⁢

∑

i
=
1

m

⁢

(

C
·
B

)

i
,
j

,

the first matrix A can be

1

0

0

0

0

0

0

1

0

0

0

0

0

0

1

0

0

0

0

0

0

1

0

0

0

0

0

0

1

0

0

0

0

0

0

1

,

the second matrix B can be

1

0

0

0

0

0

1

1

0

Assignees

• Ambit Microsystems Shanghai

Inventors

• Chao Yen-Cheng

Classifications

• H04W72/541 Primary

  using the level of interference · CPC title

• H04W72/082 Primary

  Electricity · mapped topic

• H04W88/08

  Access point devices · CPC title

• H04W84/12

  WLAN [Wireless Local Area Networks] · CPC title

• H04W72/0473

  the resource being transmission power · CPC title