METHOD OF AUTOMATIC REPEAT REQUEST (ARQ) IN COMMUNICATION SYSTEM

• US 20100131817A1
• Filed: 04/18/2008
• Published: 05/27/2010
• Est. Priority Date: 04/19/2007
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Kong, Tae Gon, Kim, Yong Ho
• Granted Patent: US 8,397,118 B2
• Time in Patent Office: Days
• US Class Current: 714/749
• CPC Class Codes: H04L 1/06 using space diversity
• CPC Class Codes: H04L 1/1819 with retransmission of additional or different redundancy
• CPC Class Codes: H04L 1/1829 Arrangements specially adapted for the receiver end
• CPC Class Codes: H04L 1/188 Time-out mechanisms
• CPC Class Codes: H04L 2001/0092 Error control systems characterised by the topology of the transmission link
• CPC Class Codes: H04W 74/0841 with collision treatment
• CPC Class Codes: H04W 74/0866 using a dedicated channel for access

Abstract

An automatic repeat request (ARQ) method for use in a communication system is disclosed. The ARQ method constructs a first data block set including a plurality of data blocks using data received from an upper layer, and transmits the data blocks contained in the first data block set to a reception end. If a predetermined time elapses without receiving any acknowledgement (ACK) signal after transmitting a last data block among the plurality of data blocks, the ARQ method transmits at least one data block reconstructed by the data received from the upper layer to the reception end until receiving the acknowledgment (ACK) signal from the reception end.

Claims

1. An automatic repeat request (ARQ) method for use in a communication system comprising:

constructing a first data block set including a plurality of data blocks using data received from an upper layer;

transmitting the plurality of data blocks contained in the first data block set to a reception end; and

if a predetermined time elapses without receiving any acknowledgement (ACK) signal after transmitting a last data block among the plurality of data blocks, transmitting at least one data block reconstructed by the data received from the upper layer to the reception end until receiving an acknowledgment (ACK) signal from the reception end.

2. The automatic repeat request (ARQ) method according to claim 1, wherein the individual data blocks contained in the first data block set are independent of each other.

3. The automatic repeat request (ARQ) method according to claim 1, wherein the plurality of data blocks are generated by encoding the data using a coefficient matrix, and the encoded data blocks are independent of each other.

4. The automatic repeat request (ARQ) method according to claim 1, wherein the predetermined time is set by a timer in a transmission end.

5. The automatic repeat request (ARQ) method according to claim 1, wherein the acknowledgment (ACK) signal is transmitted in units of a data block set when all of the plurality of data blocks of the data block set have been completely received.

6. An automatic repeat request (ARQ) method for use in a communication system comprising:

constructing a first data block set including a plurality of data blocks using data received from an upper layer;

transmitting the plurality of data blocks contained in the first data block set to a reception end; and

if one or more non-acknowledgement (NACK) signals are received from the reception end during the transmission of the plurality of data blocks contained in the first data block set, reconstructing a number of data blocks as many as the number of received NACK signals using the data received from the upper layer and transmitting the reconstructed data blocks to the reception end.

7. The automatic repeat request (ARQ) method according to claim 6, wherein the individual data blocks contained in the first data block set are independent of each other.

8. The automatic repeat request (ARQ) method according to claim 6, further comprising:

if the reception end has normally received all the data blocks contained in the first data block set, transmitting an acknowledgment (ACK) signal to the transmission end on the basis of the data block set.

9. The automatic repeat request (ARQ) method according to claim 6, further comprising:

if a predetermined time elapses without receiving any acknowledgement (ACK) signal after transmitting a last data block among the plurality of data blocks, transmitting at least one data block reconstructed by the data received from the upper layer to the reception end until receiving an acknowledgment (ACK) signal from the reception end.

10. The automatic repeat request (ARQ) method according to claim 9, wherein the predetermined time is set by a timer in a transmission end.

11. The automatic repeat request (ARQ) method according to claim 6, wherein the plurality of data blocks are generated by encoding the data using a coefficient matrix, and the encoded data blocks are independent of each other.

12. An automatic repeat request (ARQ) method for use in a communication system comprising:

constructing a first data block set including a plurality of data blocks using data received from an upper layer;

transmitting the plurality of data blocks contained in the first data block set to a reception end; and

transmitting at least one data block reconstructed by the data received from the upper layer to the reception end, until receiving an acknowledgment (ACK) signal after transmitting a last data block from among the plurality of data blocks.

13. The automatic repeat request (ARQ) method according to claim 12, wherein the individual data blocks contained in the first data block set are independent of each other.

14. The automatic repeat request (ARQ) method according to claim 12, wherein the plurality of data blocks are generated by encoding the data using a coefficient matrix, and the encoded data blocks are independent of each other.

15. The automatic repeat request (ARQ) method according to claim 12, wherein the acknowledgment (ACK) signal is transmitted in units of a data block set when all of the plurality of data blocks of the data block set have been completely received.

16. An automatic repeat request (ARQ) method for use in a communication system comprising:

receiving a plurality of data blocks contained in a first data block set;

if data blocks as many as the number of the data blocks contained in the first data block set are received, transmitting an acknowledgment (ACK) signal in units of a data block set; and

recovering original data using the received first data block set.

17. The automatic repeat request (ARQ) method according to claim 16, further comprising:

if an error is detected in any one of the received data blocks, transmitting a non-acknowledgement (NACK) signal to a transmission end.

18. The automatic repeat request (ARQ) method according to claim 16, further comprising:

decoding the plurality of data blocks contained in the received first data block set using an inverse matrix of a coefficient matrix to recover original data.

19. An automatic repeat request (ARQ) method for use in a communication system comprising:

generating at least one coded data block by encoding data received from an upper layer;

transmitting the at least one coded data block to a reception end;

if a non-acknowledgement (NACK) signal is received from the reception end, re-encoding the data received from the upper layer, and generating at least one of other coded data blocks; and

transmitting the other coded data blocks to the reception end.

20. The automatic repeat request (ARQ) method according to claim 19, wherein the coded data blocks are independent of each other.

21. An automatic repeat request (ARQ) method for use in a communication system comprising:

constructing a first data block set including one or more data blocks using data received from an upper layer;

generating a coefficient matrix and encoding the one or more data blocks contained in the first data block set using the generated coefficient matrix;

sequentially transmitting the one or more encoded data blocks contained in the encoded first data block set to a reception end; and

if a predetermined time elapses without receiving any acknowledgement (ACK) signal after transmitting a last data block among the one or more encoded data blocks, transmitting one or more encoded data blocks reconstructed by the upper-layer data to the reception end until receiving an acknowledgment (ACK) signal from the reception end.

22. An automatic repeat request (ARQ) method for use in a communication system comprising:

dividing data received from an upper layer to generate a first data block set having one or more data blocks;

generating a coefficient matrix to encode the data blocks, and encoding the data blocks with the coefficient matrix;

sequentially transmitting the encoded data blocks to a reception end; and

if a non-acknowledgement (NACK) signal is received from the reception end during a transmission of the encoded data blocks, reconstructing a number of data blocks as many as the number of received NACK signals using the data received from the upper layer, and transmitting the reconstructed data blocks to the reception end.

23. An automatic repeat request (ARQ) method for use in a communication system comprising:

dividing data received from an upper layer to generate a first data block set having one or more data blocks;

generating a coefficient matrix to encode the data blocks, and encoding the data blocks with the coefficient matrix;

sequentially transmitting the encoded data blocks to a reception end; and

transmitting at least one encoded data block reconstructed using the data received from the upper layer to the reception end, until receiving an acknowledgment (ACK) signal after transmitting a last encoded data block among the one or more data blocks.