Methods and apparatus for multi-carrier communications systems with automatic repeat request (ARQ)
AssigneeGuangdong Oppo Mobile Telecommunications Corp., Ltd.
InventorsXiaodong Li, Haiming Huang, Titus Lo, Kemin Li
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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.
Claims16
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.
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.
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.
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.
Dependencies are inferred from the claim text.