# US 11,907,039 B2 · Information handling system location wakeup radio interface synchronized communications

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- Number: US 11,907,039 B2
- Document ID: US11907039B2
- Status: Granted
- Kind: B2
- Application number: 17/212,826
- Filed: 2021-03-25
- Published: 2022-09-29
- Granted: 2024-02-20
- Earliest claimed: 2021-03-25
- Assignees: Dell Products L.P.
- Applicants: Dell Products L.P.
- Inventors: Karthikeyan Krishnakumar; Minho Cheong
- Web page: https://patentgrep.com/patent/US11907039B2

## CPC

- G06F 1/325: {Power saving in peripheral device}
- G06F 1/3209: Monitoring remote activity, e.g. over telephone lines or network connections
- G06F 1/3215: Monitoring of peripheral devices
- G06F 1/3231: Monitoring the presence, absence or movement of users
- G06F 1/3259: {Power saving in cursor control device, e.g. mouse, joystick, trackball}
- G06F 1/3265: {Power saving in display device}
- G06F 1/3271: {Power saving in keyboard}
- G06F 1/3278: {Power saving in modem or I/O interface}
- G06F 1/3284: {Power saving in printer}
- G06F 3/0231: {Cordless keyboards}
- G06F 3/038: Control and interface arrangements therefor, e.g. drivers or device-embedded control circuitry
- H04W 4/80: Services using short range communication, e.g. near-field communication [NFC], radio-frequency identification [RFID] or low energy communication
- H04W 52/0212: {managed by the network, e.g. network or access point is leader and terminal is follower}
- H04W 52/0274: {by switching on or off the equipment or parts thereof}
- H04W 76/11: Allocation or use of connection identifiers
- H04W 76/14: Direct-mode setup
- G06F 2203/0384: Wireless input, i.e. hardware and software details of wireless interface arrangements for pointing devices
- H04W 88/06: adapted for operation in multiple networks {or having at least two operational modes}, e.g. multi-mode terminals
- G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N)
- H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72)

## Abstract

An information handling system wirelessly interfaces with a location peripheral aid through primary radios that have a communication protocol, such as Bluetooth Low Energy or a wireless local area network, and through secondary radios having a low power wake and sleep using wake and sleep signals sent between the secondary radios. The location peripheral aid establishes communication with the information handling system, which reports its position to a network location to allow tracking location of the peripheral aid. The peripheral primary and secondary radio transmit and receive states operate with different profiles to manage power based upon bi-directional communications tracked over time.

## Claims

### Claim 1

An information handling system comprising:
a housing;
a processor disposed in the housing and operable to execute instructions to process information;
a memory disposed in the housing and interfaced with the processor, the memory operable to store the instructions and information;
a wireless interface module having a primary radio, a secondary radio and a processing resource; and
a location peripheral separate from the housing and including a peripheral wireless interface module having a peripheral primary radio, a peripheral secondary radio and a peripheral processing resource, the peripheral primary radio operable to transmit identifier information to the wireless interface module primary radio using a wireless personal area network protocol; and
a non-transient memory integrated in the location peripheral and storing peripheral instructions that when executed on the peripheral processing resource:
store a wake command having a wake protocol;
transmit the wake command with the peripheral secondary radio at a first predetermined time while the peripheral primary radio sleeps;
monitor with the peripheral secondary radio for communication of the wake command by enabling receive at the peripheral secondary radio at a second predetermined time interval while the peripheral primary radio sleeps; and
in response to receiving the wake command at the peripheral secondary radio, wake the peripheral primary radio from sleep, initiate pairing by the peripheral primary radio with the wireless interface primary radio using the wireless personal area network protocol, and communicate the identifier information.

### Claim 2 (depends on 1)

The information handling system of claim 1 further comprising:
a non-transient memory integrated in the housing and storing instructions that when executed on the processor:
monitors with the secondary radio for wake command; and
in response to receiving the wake command, communicates the wake command to a network location with a location of the information handling system and time stamp.

### Claim 3 (depends on 2)

The information handling system of claim 2 wherein the instructions that when executed on processor further:
in response to the wake command pair with the location peripheral through the primary radio with the wireless personal area network;
retrieve the identifier information; and
communicate the identifier information to the network location.

### Claim 4 (depends on 3)

The information handling system of claim 3 wherein the instructions that when executed on the processor further communicate adjustments to the first and second predetermined time intervals to the location peripheral.

### Claim 5 (depends on 3)

The information handling system of claim 3 wherein the wireless personal area network comprises Bluetooth Low Energy.

### Claim 6 (depends on 5)

The information handling system of claim 5 wherein the wake protocol comprises an on-off-keying modulated wireless signal.

### Claim 7 (depends on 5)

The information handling system of claim 5 wherein the wake protocol comprises an amplitude-shift keying wireless signal.

### Claim 8 (depends on 5)

The information handling system of claim 5 wherein the first predetermined time is based in part upon detected change of location of the information handling system.

### Claim 9 (depends on 5)

The information handling system of claim 5 wherein the second predetermined time interval is based in part upon a wake command transmit length of the primary radio.

### Claim 10

A method for managing information handling system peripheral power, the method comprising:
storing first, second and third radio profiles;
tracking bi-directional radio communications at a primary radio of a peripheral;
sleeping the primary radio until a secondary radio receives a wake message of a wake protocol;
applying the first radio profile at a secondary radio of the peripheral if the time to last bi-directional radio communication is less than a first threshold;
applying the second radio profile at the secondary radio of the peripheral if the time to last bi-directional radio communication is greater than the first threshold and less than a second threshold; and
applying the third radio profile at the secondary radio of the peripheral if the time to the last bi-directional radio communication is greater than the second threshold.

### Claim 11 (depends on 10)

The method of claim 10 wherein:
the tracking bi-directional radio communications further comprises tracking wireless network communications by a primary radio; and
the first, second and third radio profiles comprise receive and transmit intervals of a secondary radio having a wake protocol.

### Claim 12 (depends on 11)

The method of claim 11 wherein the wireless personal area network communications comprise Bluetooth Low Energy protocol communications.

### Claim 13 (depends on 12)

The method of claim 12 wherein the wake protocol comprises an on-off-keying modulated wireless signal.

### Claim 14 (depends on 12)

The method of claim 12 wherein the wake protocol comprises an amplitude-shift keying wireless signal.

### Claim 15 (depends on 11)

The method of claim 11 further comprising:
tracking accelerations at the peripheral; and
adjusting the first, second and third profiles based upon sensed accelerations.

### Claim 16 (depends on 11)

The method of claim 11 wherein the first, second and third profiles comprise time intervals between receive states and transmit states of the secondary radio.

### Claim 17 (depends on 11)

The method of claim 11 wherein the wireless personal area network comprises a wireless local area network.

### Claim 18

A location aid peripheral comprising:
a housing;
a peripheral processing resource disposed in the housing;
a peripheral primary radio disposed in the housing and interfaced with the peripheral processing resource and operable to transmit information with a first wireless protocol;
a peripheral secondary radio disposed in the housing and interfaced with the peripheral processing resource and operable to receive and transmit a wake command with a second wireless protocol; and
non-transitory memory interfaced with the peripheral processing resource and storing instructions that when executed on the peripheral processing resource:
stores first, second and third radio profiles having time intervals between transmit states and between receive states;
tracks bi-directional radio communications at the peripheral;
sleep the peripheral primary radio;
applies the first radio profile at the peripheral with the peripheral secondary radio if the time to last bi-directional radio communication is less than a first threshold;
applies the second radio profile at the peripheral with the peripheral secondary radio if the time to last bi-directional radio communication is greater than the first threshold and less than a second threshold;
applies the third radio profile at the peripheral with the peripheral secondary radio if the time to the last bi-directional radio communication is greater than the second threshold; and
wake the peripheral primary radio when the peripheral secondary radio receives a transmission in accordance with the first, second or third radio profile.

### Claim 19 (depends on 18)

The location peripheral aid of claim 18 wherein the first wireless protocol comprises a wireless local area network and the second wireless protocol comprises on-off-keying modulated wireless signals.

### Claim 20 (depends on 18)

The location peripheral aid of claim 18 wherein the first wireless protocol comprises Bluetooth low energy and the second wireless protocol comprises amplitude shift keying wireless signals.