METHOD AND TERMINAL FOR TRANSMITTING AND RECEIVING DATA ACCORDING TO A TRANSMISSION SPEED OF DATA

• US 20160044670A1
• Filed: 08/07/2015
• Published: 02/11/2016
• Est. Priority Date: 08/07/2014
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: KO, Hyeon-mok, KIM, Kill-yeon, CHOI, Mun-hwan
• Granted Patent: US 9,924,383 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: H04L 1/0009 by adapting the channel coding H04L1/1812 takes precedence
• CPC Class Codes: H04W 24/02 Arrangements for optimising operational condition

Abstract

A method of and an apparatus for transmitting first data to a plurality of receiver terminals connected to a transmitter terminal through the transmitter terminal and transmitting second data to the plurality of receiver terminals through the transmitter terminal is performed according to a transmission speed determined based on at least one selected from feedback information of a receiver terminal selected based on a data loss rate of the first data and variation information of data stored in a buffer of the transmitter terminal.

Claims

1. A method of transmitting and receiving data through a transmitter terminal, the method comprising:

transmitting first data to a plurality of receiver terminals connected to a transmitter terminal;

determining a transmission speed of second data based on at least one selected from feedback information of a first receiver terminal selected from the plurality of receiver terminals based on a data loss rate of the first data and variation information of data stored in a buffer of the transmitter terminal; and

transmitting the second data to the plurality of receiver terminals according to the determined transmission speed.

2. The method of claim 1, wherein the determining of the transmission speed comprises:

determining a transmission speed of the first data based on an amount of data transmitted to at least one of the plurality of receiver terminals for a preset time; and

determining the transmission speed of the second data based on the transmission speed of the first data and an amount of data capable of being stored in the buffer.

3. The method of claim 2, further comprising:

determining, based on the data loss rate of the first data, parity data, wherein the parity data comprises restoration information about the first data.

4. The method of claim 1, wherein the determining of the transmission speed comprises:

selecting, from the plurality of receiver terminals, a first receiver terminal having a lowest data loss rate of the first data; and

determining a data loss rate caused by a buffer overflow according to the data loss rate of the first receiver terminal.

5. The method of claim 4, wherein the determining of the transmission speed comprises determining the transmission speed of the second data based on a round trip time (RTT) between the transmitter terminal and the first receiver terminal and the data loss rate caused by the buffer overflow.

6. The method of claim 1, further comprising:

selecting, from the plurality of receiver terminals, a first receiver terminal having a lowest data loss rate of the first data and a second receiver terminal having a highest data loss rate of the first data; and

determining a data loss rate caused by a channel error according to a difference between the data loss rate of the first receiver terminal and the data loss rate of the second receiver terminal.

7. The method of claim 6, further comprising:

determining, based on the determined data loss rate caused by the channel error, parity data, wherein the parity data comprises restoration information of the first data.

21. A non-transitory computer-readable recording medium having recorded thereon a program for executing the method of claim 1 on a computer.

8. A method of transmitting and receiving data through a receiver terminal, the method comprising:

receiving first data from a transmitter terminal through one of a plurality of receiver terminals connected to the transmitter terminal;

transmitting feedback information about the first data to the transmitter terminal; and

receiving second data from the transmitter terminal according to a transmission speed determined from feedback information of at least one receiver terminal selected from the plurality of receiver terminals based on a data loss rate of the first data.

9. The method of claim 8, wherein if the data loss rate of the at least one receiver terminal is a lowest data loss rate, the transmission speed is determined based on the data loss rate of the receiver terminal and a round trip time (RTT) between the transmitter terminal and the receiver terminal.

10. The method of claim 9, further comprising:

receiving first parity data that comprises restoration information of the first data and is determined based on a data loss rate caused by a channel error between the plurality of receiver terminals and the transmitter terminal,

wherein the data loss rate caused by the channel error is determined according to a difference between the data loss rate of the at least one receiver terminal and a data loss rate of an other receiver terminal having a highest data loss rate of the first data among the plurality of receiver terminals.

11. A transmitter terminal comprising:

a transmitter configured to transmit first data to a plurality of receiver terminals;

a receiver configured to receive feedback information from the plurality of receiver terminals;

a buffer configured to store the first data; and

a controller configured to determine a transmission speed of second data based on at least one selected from feedback information of a receiver terminal selected from the plurality of receiver terminals based on a data loss rate of the first data and variation information of data stored in the buffer,

wherein the transmitter is configured to transmit the second data to the plurality of receiver terminals according to the determined transmission speed.

12. The transmitter terminal of claim 11, wherein the controller is further configured to determine a transmission speed of the first data based on an amount of data transmitted to at least one of the plurality of receiver terminals for a preset time and determine the transmission speed of the second data based on the transmission speed of the first data and an amount of data capable of being stored in the buffer.

13. The transmitter terminal of claim 12, wherein the controller is further configured to determine parity data, wherein the parity data comprises restoration information about the first data based on a data loss rate of the first data.

14. The transmitter terminal of claim 11, wherein the controller is further configured to select a first receiver terminal having a lowest data loss rate of the first data from the plurality of receiver terminals and determine a data loss rate caused by a buffer overflow according to a data loss rate of the first receiver terminal.

15. The transmitter terminal of claim 14, wherein the controller is further configured to determine the transmission speed of the second data based on a round trip time (RTT) between the transmitter terminal and the first receiver terminal and the data loss rate occurring due to the buffer overflow.

16. The transmitter terminal of claim 11, wherein the controller is further configured to select a first receiver terminal having a lowest data loss rate of the first data and a second receiver terminal having a highest data loss rate of the first data from the plurality of receiver terminals and determine a data loss rate caused by a channel error according to a difference between a data loss rate of the first receiver terminal and a data loss rate of the second receiver terminal.

17. The transmitter terminal of claim 16, wherein the controller is further configured to determine parity data comprising restoration information of the first data based on the determined data loss rate caused by the channel error.

18. A receiver terminal comprising:

a receiver configured to receive first data from a transmitter terminal;

a controller configured to generate feedback information about the first data; and

a transmitter configured to transmit the feedback information about the first data to the transmitter terminal,

wherein the receiver is configured to receive second data from the transmitter terminal according to a transmission speed determined from feedback information of a receiver terminal selected from the plurality of receiver terminals based on a data loss rate of the first data.

19. The receiver terminal of claim 18, wherein if the data loss rate of the receiver terminal is a lowest data loss rate among the plurality of receiver terminals, the transmission speed is determined based on the data loss rate of the receiver terminal and a round trip time (RTT) between the receiver terminal and the transmitter terminal.

20. The receiver terminal of claim 19, wherein the receiver is further configured to receive first parity data that comprises restoration information of the first data and is determined based on a data loss rate occurring due to a channel error between the plurality of receiver terminals and the transmitter terminal,

wherein the data loss rate caused by the channel error is determined according to a difference between the data loss rate of the receiver terminal and a data loss rate of a receiver terminal having a highest data loss rate of the first data among the plurality of receiver terminals.