METHODS AND APPARATUSES FOR TRANSMITTING AND RECEIVING DATA AND RECORDING MEDIUM FOR EXECUTING THE METHODS

• US 20150019716A1
• Filed: 07/10/2014
• Published: 01/15/2015
• Est. Priority Date: 07/10/2013
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: KIM, Sung-kee, RYU, Ga-hyun, SUNG, Duk-gu, PARK, Chun-bae, JOUNG, Do-young
• Granted Patent: US 9,979,512 B2
• Time in Patent Office: Days
• US Class Current: 709/224
• CPC Class Codes: G06F 11/08 Error detection or correction by redundancy in data representation, e.g. by using checking codes
• CPC Class Codes: G06F 11/14 Error detection or correction of the data by redundancy in operation G06F11/16 takes precedence
• CPC Class Codes: H04L 1/1809 Selective-repeat protocols
• CPC Class Codes: H04L 1/1825 Adaptation of specific ARQ protocol parameters according to transmission conditions
• CPC Class Codes: H04L 43/0835 One way packet loss
• CPC Class Codes: H04L 43/10 Active monitoring, e.g. heartbeat, ping or trace-route
• CPC Class Codes: H04L 47/12 Avoiding congestion; Recovering from congestion
• CPC Class Codes: H04L 47/25 with rate being modified by the source upon detecting a change of network conditions

Abstract

A method of transmitting data, the method includes transmitting a frame containing at least one data packet; generating at least one detection packet for detecting a loss of a last data packet among the at least one data packet; and in response to the last data packet of the frame being transmitted, transmitting the at least one detection packet so that the detection packet is transmitted subsequent to the data packet. Whether or not the last data packet is lost is determined by using the detection packet.

Claims

1. A method of transmitting data, the method comprising:

transmitting a frame containing at least one data packet;

generating at least one detection packet for detecting a loss of a last data packet among the at least one data packet; and

in response to the last data packet of the frame being transmitted, transmitting the at least one detection packet so that the detection packet is transmitted subsequent to the last data packet,

wherein, whether or not the last data packet is lost is determined by using the at least one detection packet.

2. The method of claim 1, wherein in response to a serial number of the at least one detection packet not being subsequent to a serial number of a data packet most recently received among the at least one data packet, it is determined that the last data packet is lost, and

wherein, the transmission method further comprises transmitting the last data packet to a client, according to a packet retransmission request that is received after the detection packet is transmitted.

3. The method of claim 2, further comprising, in response to a retransmission requested packet not being a detection packet, transmitting the requested packet.

4. The method of claim 1, further comprising,

analyzing a packet loss rate of a network;

and

determining a number of the at least one detection packet to be generated according to a result of the analyzing.

5. The method of claim 4, wherein the number of the at least one detection packet increases as the packet loss rate of the network increases.

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

6. A method of receiving data, the method comprising:

receiving a frame containing at least one data packet and at least one detection packet for detecting a loss of a last data packet among the at least one data packet of the frame;

determining whether or not the last data packet is lost by using the at least one detection packet; and

requesting retransmission of the last data packet based on a result of the determining.

7. The method of claim 6, wherein the determining further comprises, in response to a serial number of the at least one detection packet not being subsequent to a serial number of a data packet most recently received among the at least one data packet, requesting retransmission of the last data packet.

8. The method of claim 7, wherein the determining further comprises:

determining whether or not a lost packet is a detection packet; and

in response to the lost packet not being a detection packet, requesting retransmission of the lost packet.

9. The method of claim 6, wherein a number of the at least one detection packet may be determined according to a packet loss rate of a network.

10. The method of claim 9, wherein the number of the at least one detection packets increases as the packet loss rate increases.

11. An apparatus for transmitting a frame of data containing at least one data packet, the apparatus comprising:

a packet generator configured to generate a detection packet for detecting a loss of a last data packet among the at least one data packet; and

a transmitter configured to transmit the at least one data packet and the at least one detection packet, and to, in response to the last data packet of the frame being transmitted, transmit the at least one detection packet subsequent to the last data packet,

wherein, whether or not the last data packet is lost is determined by using the at least one detection packet.

12. The apparatus of claim 11, further comprising:

a determiner configured to, in response to a serial number of the at least one detection packet not being subsequent to a serial number of a data packet most recently received among the at least one data packet, determine that the last data packet is lost,

wherein, the transmitter is further configured to transmit the last data packet to a client, according to a packet retransmission request that is received after the detection packet is transmitted.

13. The apparatus of claim 12, wherein, in response to a retransmission requested packet is not the at least one detection packet, the transmitter is further configured to transmit the requested packet.

14. The apparatus of claim 11, further comprising:

an analyzer configured to analyze a packet loss rate of a network,

wherein the determiner is further configured to determine a number of the at least one detection packet to be generated, according to a result of the analyzing.

15. The apparatus of claim 14, wherein the number of the at least one detection packet increases as the packet loss rate of the network increases.

16. An apparatus for receiving data, the apparatus comprising:

a receiver configured to receive a frame of data containing at least one data packet and at least one detection packet for detecting a loss of a last data packet among the at least one data packet of the frame;

a determiner configured to determine whether or not a last data packet among the at least one data packet of the frame is lost by using the at least one detection packet; and

a requester configured to request retransmission of the last data packet based on a result of the determining.

17. The apparatus of claim 16, wherein in response to a serial number of the at least one detection packet not being subsequent to a serial number of a data packet most recently received among the at least one data packet, the requester is further configured to request retransmission of the last data packet among the at least one data packet.

18. The apparatus of claim 17, wherein the determiner is further configured to determine whether or not a lost packet is a detection packet;

and

wherein, in response to the lost packet not being a detection packet, the requester is further configured to request retransmission of the lost packet.

19. The apparatus of claim 16, wherein a number of the at least one detection packets is determined according to a packet loss rate of a network.

20. The apparatus of claim 19, wherein the number of the at least one detection packets increases as the packet loss rate increases.