Electronic device and sink device for transmitting and receiving audio packet, and operating methods thereof

Patent metadata

Field	Value
Publication number	US-12341838-B2
Application number	US-202318110567-A
Country	US
Kind code	B2
Filing date	Feb 16, 2023
Priority date	Nov 29, 2021
Publication date	Jun 24, 2025
Grant date	Jun 24, 2025

Abstract

An electronic device includes a memory, a processor, and a communication interface configured to transmit audio packets to at least one sink device where the processor may determine bit rates of the audio packets based on at least one of a wireless transmission environment in which the audio packets are transmitted or a type of each of the audio packets, encode a broadcasting audio signal to the audio packets based on the bit rates of the audio packets, and repeatedly transmit the audio packets a predetermined number of times to the at least one sink device through a broadcasting channel.

First claim

What is claimed is:

1. An electronic device comprising:
a memory;
a processor; and
a communication interface configured to transmit audio packets to at least one sink device,
wherein the processor is configured to:
determine bit rates of the audio packets based on a type of each of the audio packets, wherein the audio packets include a main packet and retransmission packets;
encode the audio packets including the main packet and the retransmission packets based on the bit rates of the audio packets; and
repeatedly transmit the audio packets including the main packet and the retransmission packets a predetermined number of times to the at least one sink device through a broadcasting channel,
wherein the processor is further configured to allocate a bit rate of a plurality of different bit rates to an audio packet of the audio packets based on a type of the audio packet, the type of the audio packet being the main packet among the audio packets or a retransmission packet of the retransmission packets among the audio packets, wherein the main packet is a packet which is to be transmitted first among the audio packets and the retransmission packet is a packet of the retransmission packets which is to be transmitted later than the main packet among the audio packets.

2. The electronic device of claim 1 , wherein the processor is configured to:
allocate a first bit rate of the plurality of different bit rates to the audio packet of the audio packets based on the audio packet being the main packet; and
allocate a second bit rate of the plurality of different bit rates less than the first bit rate to the audio packet of the audio packets based on the audio packet being the retransmission packet and an order of the retransmission packet among the retransmission packets.

3. The electronic device of claim 1 , wherein the processor is configured to variably adjust the bit rates of the audio packets based on a congestion level of the wireless transmission environment.

4. The electronic device of claim 1 , wherein the communication interface is configured to receive a request signal for requesting to change the bit rates of the audio packets from the at least one sink device, the request signal being based on a state of a wireless transmission environment determined by a reception position of a retransmission packet first successfully received at the at least one sink device among the retransmission packets of the audio packets transmitted from the electronic device, and
wherein the processor is configured to change the bit rates of the audio packets to a bit rate of the plurality of different bit rates corresponding to the request signal.

5. The electronic device of claim 1 , wherein the processor is configured to:
define the plurality of different bit rates based on a wireless transmission environment in which the audio packets are transmitted from the electronic device;
allocate a bit rate of the plurality of different bit rates for a type of each of the repeatedly transmitted audio packets; and
adjust the bit rates of the audio packets to a bit rate of the plurality of different bit rates less than the allocated bit rate in response to a request signal for requesting to change the bit rates being received from the at least one sink device through the communication interface, the request signal being based on a state of the wireless transmission environment determined by a reception position of an audio packet successfully received at the at least one sink device.

6. The electronic device of claim 1 , wherein the processor is configured to adjust the bit rates of the audio packets further based on at least one of a content characteristic of a broadcasting audio signal transmitted through the audio packets and a location in which a broadcasting service for the audio packets is provided.

7. The electronic device of claim 6 , wherein the processor is configured to:
analyze whether a characteristic of the broadcasting audio signal corresponds to a first characteristic that a sound quality is prioritized over an information transmission or a second characteristic that the information transmission is prioritized over the sound quality; and
determine the bit rates of the audio packets to be a first bit rate of the plurality of different bit rates based on the characteristic of the broadcasting audio signal corresponding to the first characteristic, and determine the bit rates of the audio packets to be a second bit rate of the plurality of different bit rates less than the first bit rate based on the characteristic of the broadcasting audio signal corresponding to the second characteristic.

8. The electronic device of claim 6 , wherein the processor is configured to:
analyze location information of a device that provides a broadcasting service for the audio packets; and
adjust the bit rates of the audio packets in response to the location information.

9. A sink device comprising:
a memory;
a processor; and
a communication interface configured to receive audio packets including a main packet and retransmission packets from an electronic device, the audio packets including the main packet and the retransmission packets being repeatedly transmitted a predetermined number of times by the electronic device through a broadcasting channel, wherein the main packet is a packet first transmitted among the audio packets and each of the retransmission packets is a packet transmitted later than the main packet among the audio packets,
wherein the processor is configured to:
determine a bit rate of a plurality of different bit rates corresponding to a state of a wireless transmission environment in which the audio packets are transmitted based on a reception position of a retransmission packet first successfully received by the sink device among the retransmission packets of the audio packets;
generate a request signal for requesting to change bit rates of the audio packets to the determined bit rate; and
transmit the request signal to the electronic device,
wherein the processor is further configured to determine the bit rate of the plurality of different bit rates based on a type of the successfully received audio packet, the type of the successfully received audio packet being the main packet or the first successfully received retransmission packet.

10. The sink device of claim 9 , wherein the processor is configured to:
determine the bit rate to be a first bit rate of the plurality of different bit rates based on the successfully received audio packet being the main packet that is first transmitted among the audio packets; and
determine the bit rate to be a second bit rate of the plurality of different bit rates less than the first bit rate based on a reception position of the retransmission packet which is transmitted later than the main packet among the audio packets based on the successfully received audio packet being the retransmission packet.

11. The sink device of claim 9 , wherein the processor is configured to transmit information on the determined bit rate together with the request signal to the electronic device.

12. The sink device of claim 11 , wherein the information on the determined bit rate comprises a bit rate of the plurality of different bit rates corresponding to the state of the wireless transmission environment determined by the reception position of the successfully received audio packet among the audio packets.

13. The sink device of claim 9 , wherein the communication interface is configured to:
generate a communication link for transmitting the request signal; and
transmit the request signal to the electronic device through

Assignees

• Samsung Electronics Co Ltd

Inventors

• Lee Sanghoon
• Kim Hyunwook
• Moon Hangil
• Bang Kyoungho
• Yang Hyunchul

Classifications

• H04L65/80 Primary

  Responding to QoS · CPC title

• H04L65/762

  at the source  (reformatting of additional data in video distribution servers H04N21/2355) · CPC title

• H04L65/611

  for multicast or broadcast (systems for broadcast or conference H04L12/18; arrangements for broadcast or distribution combined with broadcast H04H20/00; arrangements for broadcast applications with a direct linkage to broadcast information or to broadcast space-time H04H60/00; selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS], H04W4/06) · CPC title

• H04L65/752 Primary

  adapting media to network capabilities · CPC title

• G10L19/16

  Vocoder architecture · CPC title