Low-latency audio streaming with communication coexistence

Patent metadata

Field	Value
Publication number	US-10616743-B2
Application number	US-201916360925-A
Country	US
Kind code	B2
Filing date	Mar 21, 2019
Priority date	Jun 18, 2018
Publication date	Apr 7, 2020
Grant date	Apr 7, 2020

Abstract

A first device may establish, with a second device, a short-range wireless communications link. The first device may determine a time interval between each of a set of packets to be transmitted over a short-range wireless communications link with a second device. The first device may encode data with a bitrate that is based on the time interval. The first device may packetize the encoded data in the set of packets. The first device may transmit the set of packets to the second device or the short-range wireless communications link, and each of the set of packets may be separated by the time interval when transmitted.

First claim

What is claimed is:

1. A method of wireless communications by a first device, the method comprising:
determining a time interval between each of a set of packets to be transmitted over a short-range wireless communications link with a second device;
encoding data with a bitrate that is based on the time interval;
packetizing the encoded data in the set of packets;
transmitting the set of packets to the second device over the short-range wireless communications link, each of the set of packets being separated by the time interval when transmitted; and
determining, based on the time interval, a respective time to play (TTP) associated with each encoded data packetized in each of the set of packets, wherein each of the set of packets includes the respective TTP.

2. The method of claim 1 , wherein the time interval is based on scheduling information associated with a second communications technology of the first device.

3. The method of claim 2 , wherein scheduling associated with the second communications technology of the first device is based on the time interval.

4. The method of claim 3 , further comprising:
adjusting a communication window associated with the second communications technology based on the time interval; and
transmitting one or more packets associated with the second communications technology in the communication window.

5. The method of claim 1 , wherein the encoding the data with the bitrate is further based on a size of each of the set of packets.

6. The method of claim 1 , further comprising:
determining a channel condition associated with the short-range wireless communications link with the second device,
wherein the time interval is determined based on the channel condition.

7. The method of claim 6 , wherein the channel condition is based on one or more of an reference signal strength indicator (RSSI), a channel quality report received from the second device, a number of messages indicating a retransmission request received from the second device, or a number of retransmission packets transmitted to the second device.

8. The method of claim 1 , wherein the time interval is determined based on an application associated with the data.

9. The method of claim 1 , further comprising:
configuring at least one type of scanning based on the time interval.

10. The method of claim 1 , further comprising:
adjusting the time interval between each of the set of packets to be transmitted over the short-range wireless communications link.

11. The method of claim 1 , wherein the short-range wireless communications link comprises an advanced audio distribution profile (A2DP) link or a Bluetooth Low Energy (BLE) link.

12. An apparatus for wireless communication, the apparatus comprising:
a memory; and
at least one processor coupled to the memory and configured to:
determine a time interval between each of a set of packets to be transmitted over a short-range wireless communications link with a second device;
encode data with a bitrate that is based on the time interval;
packetize the encoded data in the set of packets;
transmit the set of packets to the second device over the short-range wireless communications link, each of the set of packets being separated by the time interval when transmitted; and
determine, based on the time interval, a respective time to play (TTP) associated with each encoded data packetized in each of the set of packets, wherein each of the set of packets includes the respective TTP.

13. The apparatus of claim 12 , wherein the time interval is based on scheduling information associated with a second communications technology of the apparatus.

14. The apparatus of claim 13 , wherein scheduling associated with the second communications technology of the apparatus is based on the time interval.

15. The apparatus of claim 14 , wherein the at least one processor is further configured to:
adjust a communication window associated with the second communications technology based on the time interval; and
transmit one or more packets associated with the second communications technology in the communication window.

16. The apparatus of claim 12 , wherein the at least one processor is configured to encode the data with the bitrate further based on a size of each of the set of packets.

17. The apparatus of claim 12 , wherein the at least one processor is further configured to:
determine a channel condition associated with the short-range wireless communications link with the second device,
wherein the time interval is determined based on the channel condition.

18. The apparatus of claim 17 , wherein the channel condition is based on one or more of an reference signal strength indicator (RSSI), a channel quality report received from the second device, a number of messages indicating a retransmission request received from the second device, or a number of retransmission packets transmitted to the second device.

19. The apparatus of claim 12 , wherein the time interval is determined based on an application associated with the data.

20. The apparatus of claim 12 , wherein the at least one processor is further configured to:
configure at least one type of scanning based on the time interval.

21. The apparatus of claim 12 , wherein the at least one processor is further configured to:
adjust the time interval between each of the set of packets to be transmitted over the short-range wireless communications link.

22. The apparatus of claim 12 , wherein the short-range wireless communications link comprises an advanced audio distribution profile (A2DP) link or a Bluetooth Low Energy (BLE) link.

23. An apparatus for wireless communication, the apparatus comprising:
means for determining a time interval between each of a set of packets to be transmitted over a short-range wireless communications link with a second device;
means for encoding data with a bitrate that is based on the time interval;
means for packetizing the encoded data in the set of packets;
means for transmitting the set of packets to the second device over the short-range wireless communications link, each of the set of packets being separated by the time interval when transmitted; and
means for determining, based on the time interval, a respective time to play (TTP) associated with each encoded data packetized in each of the set of packets, wherein each of the set of packets includes the respective TTP.

24. The apparatus of claim 23 , wherein the time interval is based on scheduling information associated with a second communications technology of the apparatus.

25. The apparatus of claim 24 , wherein scheduling associated with the second communications technology of the apparatus is based on the time interval.

26. The apparatus of claim 23 , further comprising:
means for adjusting a communication window associated with the second communications technology based on the time interval; and
means for transmitting one or more packets associated with the second communications technology in the communication window.

27. The apparatus of claim 23 , wherein the encoding the data with the bitrate is further based on a size of each of the set of packets.

28. The apparatus of claim 23 , further comprising:
means for determining a channel condition associated with the short-range wireless communications link with the second device,
wherein t

Assignees

• Qualcomm Inc

Inventors

• Wojcieszak Laurent
• Turner Richard
• Tsou Eric
• Deshpande Nachiket Shankar
• Hirsch Olaf Josef

Classifications

• H04W4/80 Primary

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

• H04W28/0231

  based on communication conditions (dynamic wireless traffic scheduling definition based on channel quality criteria H04W72/54) · CPC title

• H04W28/10

  Flow control {between communication endpoints} · CPC title

• H04L69/18

  Multiprotocol handlers, e.g. single devices capable of handling multiple protocols · CPC title

• H04W88/06

  adapted for operation in multiple networks {or having at least two operational modes}, e.g. multi-mode terminals · CPC title