METHODS OF COMMUNICATING DATA INCLUDING SHARED ACK/NACK MESSAGES AND RELATED DEVICES

• US 20140245095A1
• Filed: 02/04/2013
• Published: 08/28/2014
• Est. Priority Date: 02/08/2012
• Status: Active Grant

• Current Assignee: Telefonaktiebolaget LM Ericsson
• Original Assignee: Telefonaktiebolaget LM Ericsson
• Inventors: Nammi, Sairamesh, Jonsson, Anders, Lidian, Namir, Ovesj, Fredrik
• Granted Patent: US 9,148,258 B2
• Time in Patent Office: Days
• US Class Current: 714/749
• CPC Class Codes: H04B 7/0413 MIMO systems
• CPC Class Codes: H04B 7/0486 taking channel rank into account
• CPC Class Codes: H04L 1/0071 Use of interleaving interleaving per se H03M13/27
• CPC Class Codes: H04L 1/08 by repeating transmission, e.g. Verdan system H04L1/1858 and H04L1/189 take precedence
• CPC Class Codes: H04L 1/1657 Implicit acknowledgement of correct or incorrect reception, e.g. with a moving window
• CPC Class Codes: H04L 1/1671 the supervisory signal being transmitted together with control information
• CPC Class Codes: H04L 1/1845 Combining techniques, e.g. code combining
• CPC Class Codes: H04L 1/1887 Scheduling and prioritising arrangements
• CPC Class Codes: H04L 1/1893 Physical mapping arrangements physical resource mapping in general H04L5/00
• CPC Class Codes: H04L 1/1896 ARQ related signaling
• CPC Class Codes: H04L 5/0023 Time-frequency-space
• CPC Class Codes: H04L 5/0042 intra-user or intra-terminal allocation
• CPC Class Codes: H04L 5/0055 Physical resource allocation for ACK/NACK for physical mapping arrangements in ARQ protocols H04L1/1861
• CPC Class Codes: H04L 5/006 Quality of the received signal, e.g. BER, SNR, water filling

Abstract

A method of transmitting data from a wireless network node over a MIMO channel to a wireless terminal may include transmitting first and second transport data blocks to the wireless terminal over the MIMO channel using a first time-frequency-resource-element (TFRE). Responsive to receiving a NACK message from the wireless terminal corresponding to the first and second transport data blocks transmitted using the first TFRE, the first and second transport data blocks may be retransmitted to the wireless terminal over the MIMO channel using a second TFRE.

Claims

1. A method of transmitting data from a wireless network node over a MIMO channel to a wireless terminal, the method comprising:

transmitting first and second transport data blocks to the wireless terminal over the MIMO channel using a first time-frequency-resource-element (TFRE); and

responsive to receiving a NACK message from the wireless terminal corresponding to the first and second transport data blocks transmitted using the first TFRE, retransmitting the first and second transport data blocks to the wireless terminal over the MIMO channel using a second TFRE.

2. The method according to claim 1 further comprising:

responsive to receiving the NACK message from the wireless terminal corresponding to the first and second transport data blocks transmitted using the first TFRE, transmitting a data indicator to the wireless terminal for the second TFRE to indicate retransmission of both of the first and second transport data blocks using the second TFRE.

3. The method according to claim 2 wherein the data indicator is a one bit data indicator indicating retransmission of both of the first and second transport data blocks.

4. The method according to claim 1, the method further comprising:

responsive to receiving an ACK message from the wireless terminal corresponding to the first and second transport data blocks transmitted using the second TFRE, transmitting third and fourth transport data blocks to the wireless terminal over the MIMO channel using a third TFRE.

5. The method according to claim 4 further comprising:

responsive to receiving the ACK message from the wireless terminal corresponding to the first and second transport data blocks retransmitted using the second TFRE, transmitting a data indicator to the wireless terminal for the third TFRE to indicate initial transmission of both of the third and fourth transport data blocks using the third TFRE.

6. The method according to claim 1, the method further comprising:

transmitting a third transport data block to the wireless terminal over the MIMO channel using the first TFRE; and

responsive to receiving a NACK message from the wireless terminal corresponding to the third transport data block transmitted using the first TFRE, retransmitting the third transport data block to the wireless over the MIMO channel using the second TFRE.

7. The method according to claim 6 further comprising:

responsive to receiving the NACK message from the wireless terminal corresponding to the third transport data block transmitted using the first TFRE, transmitting a data indicator to the wireless terminal for the second TFRE to indicate retransmission of the third transport data block using the second TFRE.

8. The method according to claim 6, the method further comprising:

responsive to receiving an ACK message from the wireless terminal corresponding to the third transport data block transmitted using the first TFRE, transmitting a fourth transport data block to the wireless terminal over the MIMO channel using the second TFRE.

9. The method according to claim 1 further comprising:

responsive to receiving an ACK message from the wireless terminal corresponding to the first and second transport data blocks transmitted using the first TFRE, transmitting third and fourth transport data blocks to the wireless terminal over the MIMO channel using the second TFRE.

10. The method according to claim 9 further comprising:

responsive to receiving the ACK message from the wireless terminal corresponding to the first and second transport data blocks transmitted using the first TFRE, transmitting a data indicator to the wireless terminal for the second TFRE to indicate initial transmission of both of the third and fourth transport data blocks using the second TFRE.

11. The method according to claim 1, wherein the NACK message comprises a first NACK message, the method further comprising:

transmitting third and fourth transport data blocks to the wireless terminal over the MIMO channel using the first TFRE; and

responsive to receiving a second NACK message from the wireless terminal corresponding to the third and fourth transport data blocks transmitted using the first TFRE, retransmitting the third and fourth transport data blocks to the wireless terminal over the MIMO channel using the second TFRE;

wherein the first transport data block is transmitted using a first MIMO transmission stream, wherein the third transport data block is transmitted using a second MIMO transmission stream, wherein the fourth transport data block is transmitted using a third MIMO transmission stream, and wherein the second transport data block is transmitted using a fourth MIMO transmission stream.

12. A wireless network node configured to provide wireless communication with a wireless terminal over a MIMO channel, the wireless network node comprising:

a transceiver configured to transmit communications to the wireless terminal and to receive communications from the wireless terminal; and

a processor coupled to the transceiver, wherein the processor is configured to transmit first and second transport data blocks through the transceiver to the wireless terminal over the MIMO channel using a first time-frequency-resource-element (TFRE), and to retransmit the first and second transport data blocks through the transceiver to the wireless terminal over the MIMO channel using a second TFRE responsive to receiving a NACK message from the wireless terminal through the transceiver corresponding to the first and second transport data blocks transmitted using the first TFRE.

13. The wireless network node according to claim 12 wherein the NACK message comprises a first NACK message, and wherein the processor is further configured to

transmit third and fourth transport data blocks to the wireless terminal over the MIMO channel using the first TFRE, and to retransmit the third and fourth transport data blocks to the wireless terminal over the MIMO channel using the second TFRE responsive to receiving a second NACK message from the wireless terminal corresponding to the third and fourth transport data blocks transmitted using the first TFRE.

wherein the first transport data block is transmitted using a first MIMO transmission stream, wherein the third transport data block is transmitted using a second MIMO transmission stream, wherein the fourth transport data block is transmitted using a third MIMO transmission stream, and wherein the second transport data block is transmitted using a fourth MIMO transmission stream.

14. A method of receiving data at a wireless terminal from a wireless network node over a MIMO channel, the method comprising:

receiving first and second transport data blocks from the wireless network node over the MIMO channel using a first time-frequency-resource-element (TFRE); and

responsive to failing to decode at least one of the first and second transport data blocks, transmitting a NACK message corresponding to both of the first and second transport data blocks to the wireless network node.

15. The method according to claim 14 further comprising:

responsive to successfully decoding both of the first and second transport data blocks, transmitting an ACK message corresponding to both of the first and second transport data blocks to the wireless network node.

16. The method according to claim 14, further comprising:

receiving a third transport data block from the wireless network node over the MIMO channel using the first time-frequency-resource-element (TFRE); and

responsive to failing to decode the third transport data block, transmitting a NACK message corresponding to the third transport data block to the wireless network node.

17. The method according to claim 16 further comprising:

responsive to successfully decoding the third transport data block, transmitting an ACK message corresponding to the third transport data block to the wireless network node.

18. The method according to claim 14, wherein the NACK message comprise a first NACK message, the method further comprising:

receiving third and fourth transport data blocks from the wireless network node over the MIMO channel using the first TFRE; and

responsive to failing to decode at least one of the third and fourth transport data blocks, transmitting a second NACK message corresponding to both of the third and fourth transport data blocks to the wireless network node;

wherein the first transport data block is received using a first MIMO reception stream, wherein the third transport data block is received using a second MIMO reception stream, wherein the fourth transport data block is received using a third MIMO reception stream, and wherein the second transport data block is received using a fourth MIMO reception stream.

19. A wireless terminal configured to provide communication with a wireless network node over a MIMO channel, the wireless terminal comprising:

a transceiver (configured to transmit communications to the wireless network node and to receive communications from the wireless network node; and

a processor coupled to the transceiver wherein the processor is configured to receive first and second transport data blocks through the transceiver from the wireless network node over the MIMO channel using a first time-frequency-resource-element (TFRE), and to transmit a NACK message corresponding to both of the first and second transport data blocks through the transceiver to the wireless network node responsive to failing to decode at least one of the first and second transport data blocks.

20. The wireless terminal according to claim 19, wherein the processor is further configured to transmit an ACK message corresponding to both of the first and second transport data blocks through the transceiver to the wireless network node responsive to successfully decoding both of the first and second transport data blocks.

21. The wireless terminal according to claim 19, wherein the NACK message comprise a first NACK message, and wherein the processor is further configured to receive third and fourth transport data blocks through the transceiver from the wireless network node over the MIMO channel using the first TFRE, and to transmit a second NACK message corresponding to both of the third and fourth transport data blocks to the wireless network node responsive to failing to decode at least one of the third and fourth transport data blocks;

wherein the first transport data block is received using a first MIMO reception stream, wherein the third transport data block is received using a second MIMO reception stream, wherein the fourth transport data block is received using a third MIMO reception stream, and wherein the second transport data block is received using a fourth MIMO reception stream.