Methods and apparatus for multi-carrier communications systems with automatic repeat request (ARQ)

• US 10,313,061 B2
• Filed: 11/28/2016
• Issued: 06/04/2019
• Est. Priority Date: 02/07/2004
• Status: Active Grant

• Current Assignee: Guangdong OPPO Mobile Telecommunications Corporation Limited
• Original Assignee: Guangdong OPPO Mobile Telecommunications Corporation Limited
• Inventors: Li, Xiaodong, Huang, Haiming, Lo, Titus, Li, Kemin
• Primary Examiner(s): Jiang, Charles C
• Assistant Examiner(s): Kavleski, Ryan C
• Application Number:
  US15/362,536
• Publication Number:
  US 20170264397A1
• Time in Patent Office: 918 Days
• CPC Class Codes: H04L 1/0003 by switching between different modulation schemes
• CPC Class Codes: H04L 1/0013 Rate matching, e.g. puncturing or repetition of code symbols
• CPC Class Codes: H04L 1/0026 Transmission of channel quality indication
• CPC Class Codes: H04L 1/1671 the supervisory signal being transmitted together with control information
• CPC Class Codes: H04L 1/1812 Hybrid protocols; Hybrid automatic repeat request [HARQ]
• CPC Class Codes: H04L 1/1816 with retransmission of the same, encoded, message
• CPC Class Codes: H04L 1/1819 with retransmission of additional or different redundancy
• CPC Class Codes: H04L 1/1822 involving configuration of automatic repeat request [ARQ] with parallel processes
• CPC Class Codes: H04L 1/1845 Combining techniques, e.g. code combining
• CPC Class Codes: H04L 2001/0092 Error control systems characterised by the topology of the transmission link
• CPC Class Codes: H04L 5/003 Arrangements for allocating sub-channels of the transmission path
• CPC Class Codes: H04L 5/0055 Physical resource allocation for ACK/NACK for physical mapping arrangements in ARQ protocols H04L1/1861
• CPC Class Codes: H04W 72/20 Control channels or signalling for resource management
• CPC Class Codes: H04W 74/002 Transmission of channel access control information

Abstract

Hybrid ARQ is employed in a multi-carrier communication system for retransmission of erroneous packets by taking advantage of time/frequency/space diversity and by combining ARQ functions at physical layer and MAC layers, making the multi-carrier system more robust in a high packet-error environment.

Claims

1. A method for a transceiver in a multi-cell wireless communication system, the method comprising:

transmitting a data packet over a first subchannel to a receiver at a first transmission time, the first subchannel containing a first group of subcarriers;

receiving a signal from the receiver, the signal indicating an error in the data packet received by the receiver; and

transmitting, at a second transmission time different from the first transmission time, a redundancy version of the data packet to the receiver over a second subchannel and transmitting another data packet originally scheduled for the second subchannel over the first subchannel, the second subchannel containing a second group of subcarriers, wherein the second subchannel is selected from a group of subchannels reserved for data retransmission with a higher frequency reuse factor than the first subchannel.

2. The method of claim 1, wherein the higher frequency reuse factor is chosen to reduce inter-cell interference.

3. The method of claim 1, wherein the second subchannel is selected randomly from the group of subchannels reserved for data retransmission.

4. The method of claim 1, wherein the second subchannel is selected based on channel quality of the group of subchannels reserved for data retransmission.

5. The method of claim 1, wherein the redundancy version of the data packet is a progressive parity packet of the first data packet.

6. The method of claim 1, further comprising receiving a channel quality indicator (CQI) or channel measurements from the receiver.

7. A multi-cell wireless communication system with multiple transmission antennas, the wireless communication system comprising a transceiver configured to:

transmit a data packet over a first subchannel to a receiver at a first transmission time, the first subchannel containing a first group of subcarriers;

receive a signal from the receiver, the signal indicating an error in the data packet received by the receiver; and

transmit, at a second transmission time different from the first transmission time, a redundancy version of the data packet to the receiver over a second subchannel and transmit another data packet originally scheduled for the second subchannel over the first subchannel, the second subchannel containing a second group of subcarriers, wherein the second subchannel is selected from a group of subchannels reserved for data retransmission with a higher frequency reuse factor than the first subchannel.

8. The system of claim 7, wherein the higher frequency reuse factor is chosen to reduce inter-cell interference.

9. A method for a transceiver in a multi-cell wireless communication system, the method comprising:

receiving a data packet over a first subchannel from a transmitter at a first transmission time, the first subchannel containing a first group of subcarriers;

transmitting a signal to the transmitter, the signal indicating an error in the data packet received by the transceiver; and

receiving, at a second transmission time different from the first transmission time, a redundancy version of the data packet from the transmitter over a second subchannel and receiving another data packet originally scheduled for the second subchannel over the first subchannel, the second subchannel containing a second group of subcarriers, wherein the second subchannel was selected from a group of subchannels reserved for data retransmission with a higher frequency reuse factor than the first subchannel.

10. The method of claim 9, wherein the higher frequency reuse factor is employed to reduce inter-cell interference.

11. The method of claim 9, wherein the second subchannel was selected randomly from the group of subchannels reserved for data retransmission.

12. The method of claim 9, wherein the second subchannel was selected based on channel quality of the group of subchannels reserved for data retransmission.

13. The method of claim 9, wherein the transmitted signal to the transmitter is a negative acknowledgement (NACK).

14. The method of claim 9, further comprising transmitting a channel quality indicator (CQI) or channel measurements to the transmitter.

15. A multi-cell wireless communication system, the wireless communication system comprising a transceiver configured to:

receive a data packet over a first subchannel from a transmitter at a first transmission time, the first subchannel containing a first group of subcarriers;

transmit a signal to the transmitter, the signal indicating an error in the data packet received by the transceiver; and

receive, at a second transmission time different from the first transmission time, a redundancy version of the data packet from the transmitter over a second subchannel and receive another data packet originally scheduled for the second subchannel over the first subchannel, the second subchannel containing a second group of subcarriers, wherein the second subchannel was selected from a group of subchannels reserved for data retransmission with a higher frequency reuse factor than the first subchannel.

16. The system of claim 15, wherein the transceiver is further configured to transmit a channel quality indicator (CQI) or channel measurements to the transmitter.