Integration of image/video pattern recognition in traffic engineering

Patent metadata

Field	Value
Publication number	US-9811915-B2
Application number	US-201514834075-A
Country	US
Kind code	B2
Filing date	Aug 24, 2015
Priority date	Aug 24, 2015
Publication date	Nov 7, 2017
Grant date	Nov 7, 2017

Abstract

Visual information from camera sensors can be used to assign scheduling and/or transmission parameters in a wireless network. For example, the visual information can be used to visually discover a user equipment (UE) prior to initiating link discovery. This may be accomplished by analyzing the visual information to identify an absolute or relative position of the UE. The positioned may then be used to select antenna configuration parameters for transmitting a discovery signal, e.g., direction of departure (DoD), angle of departure (AoD), precoder. As another example, the visual information is used to predict a link obstruction over a radio interface between a UE and an AP. In yet other examples, the visual information may be used for traffic engineering purposes, such as to predict a traffic density or pair UEs with APs.

First claim

What is claimed:

1. A method for camera aided wireless network management, the method comprising:
receiving visual information from one or more camera sensors monitoring coverage areas of a wireless network;
predicting a direction of departure (DoD) or an angle of departure (AoD) between a receive point and a transmit point in accordance with the visual information provided by the one or more camera sensors; and
assigning a scheduling or transmission parameter for a wireless signal transmitted from the transmit point to the receive point in accordance with the predicted DoD or the predicted AoD.

2. The method of claim 1 , further comprising:
visually discovering a user equipment (UE) in a coverage area of an access point (AP) in accordance with the visual information provided by the one or more camera sensors, the receive point and the transmit point corresponding to the UE and the AP, or vice versa; and
initiating link discovery between the AP and the UE when the visual information provided by the one or more camera sensors satisfy a link discovery criterion.

3. The method of claim 2 , wherein the link discovery criterion is satisfied when the visual information provided by the one or more camera sensors indicates an unobstructed line-of-sight between the AP and the UE.

4. The method of claim 2 , wherein the link discovery criterion is satisfied when a predicted link quality between the AP and the UE, as estimated from the visual information, exceeds a threshold.

5. The method of claim 4 , wherein the predicted link quality corresponds to an indirect link between the AP and the UE.

6. The method of claim 2 , wherein visually discovering the UE in the coverage area of the AP comprises:
identifying a light emitting diode (LED) signature emitted by the UE.

7. The method of claim 6 , wherein the LED signature is emitted at a frequency that is outside the visible spectrum observed by humans.

8. The method of claim 7 , wherein the frequency of the LED signature is between 430 terahertz (THz) and 790 terahertz (THz).

9. The method of claim 2 , wherein assigning the scheduling or transmission parameter for the wireless signal transmitted from the transmit point to the receive point in accordance with the predicted DoD or the predicted AoD comprises:
assigning a precoder to a discovery signal transmission of the UE or the AP in accordance with the predicted DoD or the predicted AoD.

10. A method for camera aided wireless network management, the method comprising:
receiving visual information from one or more camera sensors monitoring coverage areas of a wireless network; and
assigning a scheduling or transmission parameter for a transmission between a transmit point and a receive point in accordance with the visual information provided by the one or more camera sensors,
wherein assigning the scheduling or transmission parameter for the transmission between the transmit point and the receive point in accordance with the visual information provided by the one or more camera sensors comprises predicting a link obstruction over a radio interface between the transmit point and the receive point in accordance with the visual information provided by the one or more camera sensors, and modifying the scheduling or transmission parameter of the radio interface for a time period, during which the link obstruction is predicted to occur, to mitigate or avoid a reduction in link quality resulting from the link obstruction.

11. The method of claim 10 , wherein modifying the scheduling or transmission parameter of the radio interface for the time period to mitigate or avoid a reduction in link quality resulting from the link obstruction comprises:
increasing a transmit power level or lowering a modulation and coding scheme (MCS) level of a transmission communicated over the radio interface during the time period to compensate for increased path loss resulting from the link obstruction.

12. The method of claim 10 , wherein modifying the scheduling or transmission parameter of the radio interface for the time period to mitigate or avoid a reduction in link quality resulting from the link obstruction comprises:
modifying an antenna transmission scheme of a transmission communicated over the radio interface during the time period.

13. The method of claim 12 , wherein modifying the antenna transmission scheme of the transmission communicated over the radio interface for the time period comprises:
assigning a new precoder to the transmit point during the time period to modify a signal path of the radio interface during the time period.

14. The method of claim 10 , wherein the transmit point comprises a serving access point (AP) and the receive point comprises a served user equipment (UE), or vice versa, and wherein modifying the scheduling or transmission parameter for the time period comprises:
initiating a handover from the serving AP to a neighboring AP prior to the time period.

15. The method of claim 10 , wherein the transmit point comprises a serving access point (AP) and the receive point comprises a served user equipment (UE), or vice versa, and wherein modifying the scheduling or transmission parameter during the time period comprises:
scheduling a joint transmission or a joint reception between the serving AP and a neighboring AP for data communicated by the UE during the time period.

16. The method of claim 10 , wherein predicting the link obstruction over the radio interface between the transmit point and the receive point in accordance with the visual information provided by the one or more camera sensors comprises:
tracking a position of a moving object; and
predicting that the moving object will pass through a signal path between the transmit point and the receive point.

17. The method of claim 16 , wherein the signal path comprises a line of sight between the transmit point and the receive point.

18. The method of claim 16 , wherein the signal path comprises an indirect signal path reflecting off a reflection point between the transmit point and the receive point.

19. The method of claim 10 , wherein the transmit point comprises a serving access point (AP) and the receive point comprises a served user equipment (UE), or vice versa, and wherein predicting the link obstruction over the radio interface between the transmit point and the receive point in accordance with the visual information provided by the one or more camera sensors comprises:
tracking a position of the served UE as the served UE migrates throughout a coverage area of the serving AP; and
predicting that the served UE will migrate to a position such that an object will pass through a signal path between the served UE and the serving AP.

20. The method of claim 19 , wherein the object is a stationary structure.

21. The method of claim 10 , wherein predicting the link obstruction over the radio interface between the transmit point and the receive point in accordance with the visual information provided by the one or more camera sensors comprises:
identifying a weather condition; and
predicting that the weather condition will increase a path loss over the radio interface.

22. The method of claim 21 , wherein the weather condition comprises precipitation.

23. The method of claim 21 , wherein modifying the scheduling or transmission parameter for the time period to mitigate or avoid the reduction in link quality comprises:
changing from a multi-polarization transmission scheme to a

Assignees

• Huawei Tech Co Ltd

Inventors

• Stephenne Alex
• Callard Aaron

Classifications

• G06T2207/30236

  Traffic on road, railway or crossing · CPC title

• G06K9/00785

  Physics · mapped topic

• H04W40/20

  based on geographic position or location · CPC title

• H04W40/06

  based on characteristics of available antennas · CPC title

• Y02B60/50

  Cross-Sectional Technologies · mapped topic