IP Library › Granted Patent US 10,172,055

Granted Patent B2

US 10,172,055 · App. 15/446,115 · Granted Jan 1, 2019

Controlling wireless access point handover and/or transmissions mode based on person proximity

Inventors: Khosro Rabii (San Diego, CA); Jean-Yves Couleaud (Mission Viejo, CA); Pierre Schuberth (Corona del Mar, CA)

Assignee: Thales Avionics, Inc.

H04W36/08 H04W4/023 H04W4/046 H04W84/12

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Quick Facts

Patent No.: US 10,172,055
App. No.: 15/446,115
Granted: Jan 1, 2019
Kind: B2

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Abstract

An in-flight entertainment system including wireless access points (WAPs) spaced apart within an aircraft and connected to antennas, proximity sensors adjacent to the antennas, and a controller. The controller controls transmissions from WAPs of traffic in communication sessions. The controller performs operations that include receiving a proximity alert signal from a first proximity sensor indicating that a passenger is proximately located to a first antenna used by a first WAP for transmission of a communication session, and identifying a remedial action responsive to evaluating a rule based on the proximity alert signal and characteristics of the communication session. The operations include performing the remedial action as one of: 1) initiating handover of the communication session from the first WAP to a second WAP; and 2) initiating a change in transmission mode that will be used by the first WAP for continued transmission of the communication session.

Claims (119)

1. An in-flight entertainment system comprising:

a plurality of wireless access points (WAPs) spaced apart within an aircraft and mounted to structures of the aircraft, each of the WAPs connected to an antenna used by the WAP for transmission of communication sessions to communication terminals;

a plurality of proximity sensors, each mounted adjacent to a different one of the antennas and configured to generate a proximity alert signal indicating that a passenger is proximately located to the antenna; and

a WAP controller configured to control radio transmission from the WAPs of traffic in communication sessions, the WAP controller comprising:

a network interface that communicates with the WAPs through a network;

a processor coupled to the network interface; and

a memory coupled to the processor and storing program code that when executed by the processor causes the processor to perform operations comprising:

receiving a proximity alert signal from one of the proximity sensors indicating that a passenger is proximately located to a first one of the antennas used by a first one of the WAPs for transmission of a communication session;

identifying a remedial action responsive to evaluating a WAP handover/mode-change rule based on the proximity alert signal and characteristics of the communication session; and

performing the remedial action as one of: 1) initiating handover of the communication session from the first one of the WAPs to a second one of the WAPs to satisfy the WAP handover/mode-change rule; and 2) initiating a change in transmission mode that will be used by the first one of the WAPs for continued transmission of the communication session to satisfy the WAP handover/mode-change rule.

2. The in-flight entertainment system of claim 1 , wherein the identifying the remedial action responsive to evaluating the WAP handover/mode-change rule based on the proximity alert signal and characteristics of the communication session, comprises:

determining whether the communication session can be served by the first one of the WAPs operating in a lower bandwidth transmission mode responsive to the evaluation of the WAP handover/mode-change rule; and

based on determining that the communication session can be served by the first one of the WAPs operating in the lower bandwidth transmission mode, identifying as the remedial action to control the first one of the WAPs to change transmission mode to operate in the lower bandwidth transmission mode; and

based on determining that the communication session cannot be served by the first one of the WAPs operating in the lower bandwidth transmission mode, identifying as the remedial action to perform initiation of handover of the communication session from the first one of the WAPs to the second one of the WAPs.

3. A method by a processor of a wireless access point (WAP) controller to control radio transmission of traffic in communication sessions from WAPs to communication terminals, the method comprising:

receiving a proximity alert signal from a proximity sensor indicating that a person is proximately located to an antenna used by a first WAP for transmission of a communication session to a communication terminal;

identifying a remedial action responsive to evaluating a WAP handover/mode-change rule based on the proximity alert signal and characteristics of the communication session, wherein the identification of the remedial action comprises:

determining from the proximity alert signal whether the person has remained proximately located to the antenna for more than a first threshold time and, if so, whether the person has remained proximately located to the antenna for more than a second threshold time that is greater than the first threshold time;

based on determining that the person has remained proximately located to the antenna for more than the first threshold time but less than the second threshold time, identifying as the remedial action to control the first WAP to change transmission mode that will be used by the first WAP for continued transmission of the communication session; and

based on determining that the person has remained proximately located to the antenna for more than the second threshold time, identifying as the remedial action to perform initiation of handover of the communication session from the first WAP to a second WAP; and

performing the remedial action as one of: 1) initiating handover of the communication session from the first WAP to the second WAP to satisfy the WAP handover/mode-change rule; and 2) initiating a change in transmission mode that will be used by the first WAP for continued transmission of the communication session to satisfy the WAP handover/mode-change rule.

4. The method of claim 3 , wherein the identifying as the remedial action to perform initiation of handover of the communication session from the first WAP to the second WAP comprises:

determining that the communication session with the communication terminal can be served by the second WAP responsive to the evaluation of the WAP handover/mode-change rule; and

responsive to the determination, identifying as the remedial action to perform initiation of handover of the communication session from the first WAP to the second WAP.

5. The method of claim 4 , wherein the determining that the communication session with the communication terminal can be served by the second WAP responsive to the evaluation of the WAP handover/mode-change rule, comprises:

determining that a quality of service, which would be provided by the second WAP for the communication session upon handover from the first WAP, satisfies the WAP handover/mode-change rule.

6. A method by a processor of a wireless access point (WAP) controller to control radio transmission of traffic in communication sessions from WAPs to communication terminals, the method comprising:

determining that the communication session with the communication terminal can be served by the first WAP operating in a lower bandwidth transmission mode responsive to the evaluation of the WAP handover/mode-change rule; and

identifying as the remedial action to control the first WAP to change transmission mode to operate in the lower bandwidth transmission mode; and

performing the remedial action as one of: 1) initiating handover of the communication session from the first WAP to a second WAP to satisfy the WAP handover/mode-change rule; and 2) initiating a change in transmission mode that will be used by the first WAP for continued transmission of the communication session to satisfy the WAP handover/mode-change rule, by

controlling the first WAP to initiate change of the transmission mode, that will be used by the first WAP for continued transmission of the communication session, to the lower bandwidth transmission mode to satisfy the WAP handover/mode-change rule.

7. The method of claim 6 , wherein:

the identifying as the remedial action that the communication session with the communication terminal can be served by the first WAP operating in the lower bandwidth transmission mode responsive to the evaluation of the WAP handover/mode-change rule, comprises:

identifying as the remedial action, based on evaluation of the WAP handover/mode-change rule, that the communication session with the communication terminal is being served by the first WAP operating in WiFi 802.11 A-D mode and can continue to be served by the first WAP when operating in WiFi 802.11 A-C mode; and

the performing the remedial action as one of: 1) initiating handover of the communication session from the first WAP to the second WAP to satisfy the WAP handover/mode-change rule; and 2) initiating a change in transmission mode that will be used by the first WAP for continued transmission of the communication session to satisfy the WAP handover/mode-change rule, comprises:

changing the transmission mode, based on evaluation of the WAP handover/mode-change rule, to the downgraded transmission mode for use by the first WAP for continued transmission of the communication session.

8. A method by a processor of a wireless access point (WAP) controller to control radio transmission of traffic in communication sessions from WAPs to communication terminals, the method comprising:

determining whether the communication session with the communication terminal can be served by the first WAP operating in a lower bandwidth transmission mode responsive to the evaluation of the WAP handover/mode-change rule; and

based on determining that the communication session can be served by the first WAP operating in the lower bandwidth transmission mode, identifying as the remedial action to control the first WAP to change transmission mode to operate in the lower bandwidth transmission mode; and

based on determining that the communication session cannot be served by the first WAP operating in the lower bandwidth transmission mode, identifying as the remedial action to perform initiation of handover of the communication session from the first WAP to a second WAP; and

9. A method by a processor of a wireless access point (WAP) controller to control radio transmission of traffic in communication sessions from WAPs to communication terminals, the method comprising:

identifying a remedial action responsive to evaluating a WAP handover/mode-change rule based on the proximity alert signal and characteristics of the communication session; and

determining based on the proximity alert signal a time duration that the person has remained proximately located to the antenna used by the first WAP for transmission of the communication session to the communication terminal; and

controlling the first WAP to decrease a duty cycle ratio of active transmission duration to inactive transmitter duration for signal transmission by the first WAP through the antenna, responsive to determining that the time duration exceeds a first threshold value; and

controlling the first WAP to increase the duty cycle ratio of active transmission duration to inactive transmitter duration for signal transmission by the first WAP through the antenna, responsive to determining that the time duration has dropped below the first threshold value after previously exceeded the first threshold value.

10. A method by a processor of a wireless access point (WAP) controller to control radio transmission of traffic in communication sessions from WAPs to communication terminals, the method comprising:

identifying a remedial action responsive to evaluating a WAP handover/mode-change rule based on the proximity alert signal and characteristics of the communication session; and

controlling the first WAP to decrease a packet retransmission limit used to control rate of traffic packet losses the first WAP allows in transmissions for the communication session through the antenna, responsive to determining that the time duration exceeds a first threshold value; and

controlling the first WAP to increase the packet retransmission limit used to control rate of traffic packet losses the first WAP allows in transmissions for the communication session through the antenna, responsive to determining that the time duration has dropped below the first threshold value after previously exceeded the first threshold value.

11. The method of claim 8 , wherein the receiving a proximity alert signal from the proximity sensor indicating that the person is proximately located to the antenna used by the first WAP for transmission of the communication session to the communication terminal, comprises:

processing a video signal from a camera within a seat video display unit to determine that the person's body is resting against a portion of the seat video display unit having the antenna.

12. The method of claim 8 , wherein the receiving the proximity alert signal from the proximity sensor indicating that the person is proximately located to the antenna used by the first WAP for transmission of the communication session to the communication terminal, comprises:

determining from an electrical capacitance sensor within a housing that also encloses a multiple-input and multiple-output antenna, that the person's body is within a threshold distance of the housing.

13. A wireless access point (WAP) controller to control radio transmission from WAPs of traffic in communication sessions to communication terminals, the WAP controller comprising:

a network interface;

a processor coupled to the network interface; and

a memory coupled to the processor and storing program code that when executed by the processor causes the processor to perform operations comprising:

14. The wireless access point (WAP) controller of claim 13 , wherein:

the identifying the remedial action responsive to evaluating the WAP handover/mode-change rule based on the proximity alert signal and characteristics of the communication session, comprises:

determining that the communication session with the communication terminal can be served by the second WAP responsive to the evaluation of the WAP handover/mode-change rule; and

responsive to the determination, identifying as the remedial action to perform initiation of handover of the communication session from the first WAP to the second WAP; and

initiating handover of the communication session from the first WAP to the second WAP.

15. A wireless access point (WAP) controller to control radio transmission from WAPs of traffic in communication sessions to communication terminals, the WAP controller comprising:

a network interface;

a processor coupled to the network interface; and

a memory coupled to the processor and storing program code that when executed by the processor causes the processor to perform operations comprising:

identifying as the remedial action to control the first WAP to change transmission mode to operate in the lower bandwidth transmission mode; and

16. A wireless access point (WAP) controller to control radio transmission from WAPs of traffic in communication sessions to communication terminals, the WAP controller comprising:

a network interface;

a processor coupled to the network interface; and

a memory coupled to the processor and storing program code that when executed by the processor causes the processor to perform operations comprising:

17. A wireless access point (WAP) controller to control radio transmission from WAPs of traffic in communication sessions to communication terminals, the WAP controller comprising:

a network interface;

a processor coupled to the network interface; and

a memory coupled to the processor and storing program code that when executed by the processor causes the processor to perform operations comprising:

identifying a remedial action responsive to evaluating a WAP handover/mode-change rule based on the proximity alert signal and characteristics of the communication session; and

18. A wireless access point (WAP) controller to control radio transmission from WAPs of traffic in communication sessions to communication terminals, the WAP controller comprising:

a network interface;

a processor coupled to the network interface; and

a memory coupled to the processor and storing program code that when executed by the processor causes the processor to perform operations comprising:

identifying a remedial action responsive to evaluating a WAP handover/mode-change rule based on the proximity alert signal and characteristics of the communication session; and

Assignments (1)

ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Mar 1, 2017

From: RABII, KHOSRO; COULEAUD, JEAN-YVES; SCHUBERTH, PIERRE

To: THALES AVIONICS, INC.

Reel/Frame 041420/0173 →

Continuity (1)

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