# US 11,452,155 B2 · Transmitting-end bluetooth device and receiving-end bluetooth device

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- Number: US 11,452,155 B2
- Document ID: US11452155B2
- Status: Granted
- Kind: B2
- Application number: 17/232,908
- Filed: 2021-04-16
- Published: 2021-07-29
- Granted: 2022-09-20
- Earliest claimed: 2018-05-18
- Assignees: Realtek Semiconductor Corp.
- Applicants: Realtek Semiconductor Corp.
- Inventors: Yu-Hsuan Liu
- Web page: https://patentgrep.com/patent/US11452155B2

## CPC

- H04W 76/10: Connection setup
- H04W 76/14: Direct-mode setup
- H04W 84/18: Self-organising networks, e.g. ad-hoc networks or sensor networks
- H04W 92/18: between terminal devices
- H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72)

## Abstract

A transmitting-end Bluetooth device includes: a transmitting-end Bluetooth transceiver circuit; a packet generating circuit, coupled with the transmitting-end Bluetooth transceiver circuit; and a transmitting-end control circuit, coupled with the transmitting-end Bluetooth transceiver circuit and the packet generating circuit, arranged to operably instruct the packet generating circuit to insert an auto-pairing request and a source Bluetooth device address into one or more target packets when the transmitting-end Bluetooth device initiates a Bluetooth auto-pairing procedure, and arranged to operably control the transmitting-end Bluetooth transceiver circuit to transmit the one or more target packets when the transmitting-end Bluetooth device operates under a predetermined transmitting-end operating mode, so that a receiving-end Bluetooth device operating under a predetermined receiving-end operating mode is enabled to actively conduct a Bluetooth auto-pairing procedure with the transmitting-end Bluetooth device to establish one or more Bluetooth bonds between the transmitting-end Bluetooth device and the receiving-end Bluetooth device.

## Claims

### Claim 1

A transmitting-end Bluetooth device (110), comprising:
a transmitting-end Bluetooth transceiver circuit (111);
a packet generating circuit (113), coupled with the transmitting-end Bluetooth transceiver circuit (111); and
a transmitting-end control circuit (115), coupled with the transmitting-end Bluetooth transceiver circuit (111) and the packet generating circuit (113), arranged to operably instruct the packet generating circuit (113) to insert an auto-pairing request and a source Bluetooth device address into one or more target packets when the transmitting-end Bluetooth device (110) initiates a Bluetooth auto-pairing procedure, and arranged to operably control the transmitting-end Bluetooth transceiver circuit (111) to transmit the one or more target packets when the transmitting-end Bluetooth device (110) operates under a predetermined transmitting-end operating mode, so that a receiving-end Bluetooth device (120) operating under a predetermined receiving-end operating mode is enabled to actively conduct a Bluetooth auto-pairing procedure with the transmitting-end Bluetooth device (110) to establish one or more Bluetooth bonds between the transmitting-end Bluetooth device (110) and the receiving-end Bluetooth device (120);
wherein the predetermined transmitting-end operating mode is a Non-connectable mode or a Non-scannable mode, while the predetermined receiving-end operating mode is a LE Extended Passive Scan mode.

### Claim 2 (depends on 1)

The transmitting-end Bluetooth device (110) of claim 1, wherein the one or more target packets comprise:
one or more auxiliary chain indication (AUX_CHAIN_IND) packets; or
a group of packets formed by one or more extended advertising indication (ADV_EXT_IND) packets, one or more auxiliary advertising indication (AUX_ADV_IND) packets, and one or more auxiliary chain indication packets.

### Claim 3

A transmitting-end Bluetooth device (110), comprising:
a transmitting-end Bluetooth transceiver circuit (111);
a packet generating circuit (113), coupled with the transmitting-end Bluetooth transceiver circuit (111); and
a transmitting-end control circuit (115), coupled with the transmitting-end Bluetooth transceiver circuit (111) and the packet generating circuit (113), arranged to operably instruct the packet generating circuit (113) to insert an auto-pairing request and a source Bluetooth device address into one or more target packets when the transmitting-end Bluetooth device (110) initiates a Bluetooth auto-pairing procedure, and arranged to operably control the transmitting-end Bluetooth transceiver circuit (111) to transmit the one or more target packets when the transmitting-end Bluetooth device (110) operates under a predetermined transmitting-end operating mode, so that a receiving-end Bluetooth device (120) operating under a predetermined receiving-end operating mode is enabled to actively conduct a Bluetooth auto-pairing procedure with the transmitting-end Bluetooth device (110) to establish one or more Bluetooth bonds between the transmitting-end Bluetooth device (110) and the receiving-end Bluetooth device (120);
wherein the predetermined transmitting-end operating mode is a Non-connectable mode, a Non-scannable mode, or a Periodic Advertising mode, while the predetermined receiving-end operating mode is a Periodic Scanning mode.

### Claim 4 (depends on 3)

The transmitting-end Bluetooth device (110) of claim 3, wherein the one or more target packets comprise:
one or more auxiliary synchronous indication (AUX_SYNC_IND) packets; or
a group of packets formed by one or more extended advertising indication (ADV_EXT_IND) packets, one or more auxiliary advertising indication (AUX_ADV_IND) packets, and one or more auxiliary synchronous indication packets.

### Claim 5

A receiving-end Bluetooth device (120), comprising:
a receiving-end Bluetooth transceiver circuit (121), arranged to operably receive one or more target packets when the receiving-end Bluetooth device (120) operates under a predetermined receiving-end operating mode;
a packet parsing circuit (123), coupled with the receiving-end Bluetooth transceiver circuit (121), configured to operably parse the one or more target packets to extract an auto-pairing request and a source Bluetooth device address; and
a receiving-end control circuit (125), coupled with the receiving-end Bluetooth transceiver circuit (121) and the packet parsing circuit (123), arranged to actively conduct a Bluetooth auto-pairing procedure with a transmitting-end Bluetooth device (110) operating under a predetermined transmitting-end operating mode through the receiving-end Bluetooth transceiver circuit (121) according to the auto-pairing request and the source Bluetooth device address to establish one or more Bluetooth bonds between the transmitting-end Bluetooth device (110) and the receiving-end Bluetooth device (120);
wherein the predetermined transmitting-end operating mode is a Non-connectable mode, a Non-scannable mode, or a Periodic Advertising mode, while the predetermined receiving-end operating mode is a Periodic Scanning mode.

### Claim 6 (depends on 5)

The transmitting-end Bluetooth device (110) of claim 5, wherein the one or more target packets comprise:
one or more auxiliary synchronous indication packets; or
a group of packets formed by one or more extended advertising indication (ADV_EXT_IND) packets, one or more auxiliary advertising indication (AUX_ADV_IND) packets, and one or more auxiliary synchronous indication packets.