Latency reduction

Patent metadata

Field	Value
Publication number	US-11375574-B2
Application number	US-202016990982-A
Country	US
Kind code	B2
Filing date	Aug 11, 2020
Priority date	Aug 11, 2020
Publication date	Jun 28, 2022
Grant date	Jun 28, 2022

Abstract

Reduced Advanced Audio Distribution Profile (A2DP) latency on a link between a source and a pair of headphones may be achieved by improving the quality of the link between secondary and primary and establishing a direct link between the source and secondary to mitigate the link quality issues of the source and primary link. In one example, this involves receiving, via a first receiver, packets from a source on a first wireless connection, determining, by the first receiver, that a first packet received via the first wireless connection has an error, establishing a second connection between the first receiver and a second receiver, and establishing a third connection between the second receiver and the source. In particular, the first receiver may be configured as a primary True Wireless Stereo (TWS) Bluetooth device and the second receiver may be configured as a secondary TWS Bluetooth device.

First claim

What is claimed is:

1. An apparatus comprising:
a first receiver wirelessly coupled to a source configured to output packets, the first receiver configured as a primary True Wireless Stereo (TWS) Bluetooth device; and
a second receiver wirelessly coupled to the first receiver, the second receiver configured as a secondary TWS Bluetooth device;
wherein the first receiver is configured to establish a first connection with the source and a second connection with the second receiver, receive a first packet from the source on the first connection, and determine whether the received first packet has an error;
wherein the second receiver is configured to establish a third connection with the source and receive the first packet from the source;
wherein the first receiver is further configured to determine whether the second receiver received the first packet in response to the determination that the first packet has the error.

2. The apparatus of claim 1 , wherein the first packet is an Advanced Audio Distribution Profile (A2DP) packet.

3. The apparatus of claim 1 , wherein the first receiver is further configured to request the first packet from the second receiver in response to the determination that the second receiver received the first packet, determine the first packet received from the second receiver has no error, and transmit an acknowledgement packet to the source in response to determination the first packet received from the second receiver has no error.

4. The apparatus of claim 1 , wherein the first receiver is further configured to request the first packet from the second receiver in response to the determination that the second receiver received the first packet, and the second receiver is further configured to determine the first packet received from the source by the second receiver has no error, and transmit an acknowledgement packet to the source in response to determination the first packet received from the source by the second receiver has no error.

5. The apparatus of claim 1 , wherein the first receiver is configured to receive a second packet from the source, and transmit the second packet from the first receiver to the second receiver in response to a determination the second receiver did not receive the second packet.

6. The apparatus of claim 1 , wherein the source is incorporated into a device selected from the group consisting of a music player, a video player, an entertainment unit, a navigation device, a communications device, a mobile device, a mobile phone, a smartphone, a personal digital assistant, a fixed location terminal, a tablet computer, a computer, a wearable device, a laptop computer, a server, and a device in an automotive vehicle.

7. An apparatus comprising:
first means for transceiving wirelessly coupled to a source configured to output packets, the first means for transceiving configured as a primary True Wireless Stereo (TWS) Bluetooth device; and
second means for transceiving wirelessly coupled to the first means for transceiving, the second means for transceiving configured as a secondary TWS Bluetooth device;
wherein the first means for transceiving is configured to establish a first connection with the source and a second connection with the second means for transceiving, receive a first packet from the source on the first connection, and determine whether the received first packet has an error;
wherein the second means for transceiving is configured to establish a third connection with the source and receive the first packet from the source;
wherein the first means for transceiving is further configured to determine whether the second means for transceiving received the first packet in response to the determination that the first packet has the error.

8. The apparatus of claim 7 , wherein the first packet is an Advanced Audio Distribution Profile (A2DP) packet.

9. The apparatus of claim 7 , wherein the first means for transceiving is further configured to request the first packet from the second means for transceiving in response to the determination that the second means for transceiving received the first packet, determine the first packet received from the second means for transceiving has no error, and transmit an acknowledgement packet to the source in response to determination the first packet received from the second means for transceiving has no error.

10. The apparatus of claim 7 , wherein the first means for transceiving is further configured to request the first packet from the second means for transceiving in response to the determination that the second means for transceiving received the first packet, and the second means for transceiving is further configured to determine the first packet received from the source by the second means for transceiving has no error, and transmit an acknowledgement packet to the source in response to determination the first packet received from the source by the second means for transceiving has no error.

11. The apparatus of claim 7 , wherein the first means for transceiving is configured to receive a second packet from the source, and transmit the second packet from the first means for transceiving to the second means for transceiving in response to a determination the second means for transceiving did not receive the second packet.

12. The apparatus of claim 7 , wherein the source is incorporated into a device selected from the group consisting of a music player, a video player, an entertainment unit, a navigation device, a communications device, a mobile device, a mobile phone, a smartphone, a personal digital assistant, a fixed location terminal, a tablet computer, a computer, a wearable device, a laptop computer, a server, and a device in an automotive vehicle.

13. A method for communication, the method comprising:
establishing a first connection between a source and a first receiver, the first receiver configured as a True Wireless Stereo (TWS) Bluetooth configured device;
receiving a first packet from the source by the first receiver;
determining, by the first receiver, whether the first packet has an error;
establishing a second connection between the first receiver and a second receiver, the second receiver configured as a TWS Bluetooth configured device;
establishing a third connection between the second receiver and the source;
receiving, by the second receiver, the first packet from the source; and
determining whether the second receiver received the first packet in response to the determination that the first packet has the error.

14. The method of claim 13 , wherein the first packet is an Advanced Audio Distribution Profile (A2DP) packet.

15. The method of claim 13 , further comprising requesting, by the first receiver, the first packet from the second receiver in response to the determination that the second receiver received the first packet, determining, by the first receiver, the first packet received from the second receiver has no error, and transmitting, by the first receiver, an acknowledgement packet to the source in response to determination the first packet received from the second receiver has no error.

16. The method of claim 13 , further comprising requesting, by the first receiver, the first packet from the second receiver in response to the determination that the second receiver received the first packet, determining, by the second receiver, the first packet received from the source has no error, and transmitting, by the second receiver, an acknowledgement packet to the source in response to determination the first packet received from the source by the second receiver

Assignees

• Qualcomm Inc

Inventors

• Srivastava Dishant
• Campbell Benjamin
• Linsky Joel
• Batra Mayank

Classifications

• H04L69/40

  for recovering from a failure of a protocol instance or entity, e.g. service redundancy protocols, protocol state redundancy or protocol service redirection (management of faults, events, alarms or notifications in data switching networks H04L41/06) · CPC title

• H04W76/19

  Connection re-establishment · CPC title

• H04W4/80

  Services using short range communication, e.g. near-field communication [NFC], radio-frequency identification [RFID] or low energy communication · CPC title

• H04N21/8106

  involving special audio data, e.g. different tracks for different languages · CPC title

• H04L65/1069 Primary

  Session establishment or de-establishment · CPC title