Radio apparatus for performing automatic retransmission
AssigneeNEC Corporation
InventorRyuichiro Ishizaki
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Abstract
A radio apparatus is disclosed for improving the throughput of data transfer using a HARQ-based automatic retransmission. The radio apparatus performs a HARQ-based automatic retransmission. In this event, a redundancy version control unit identifies a redundancy version in the retransmission based on a redundancy version in the preceding transmission in which the need for retransmission arose. A HARQ processing unit performs rate matching on each of the systematic bits and parity bits of data to be retransmitted in accordance with the redundancy version identified by the redundancy version control unit.
Claims6
A radio apparatus for performing a HARQ-based automatic retransmission, comprising:
- a redundancy version control unit for identifying a redundancy version in the preceding retransmission when a retransmission is needed based on a determination criteria which differs depending on whether the redundancy version in the preceding transmission handled systematic bits as priority or as nonpriority;
- and
- a HARQ processing unit for performing rate matching for each of the systematic bits and parity bits of data to be retransmitted in accordance with the redundancy version identified by said redundancy version control unit.
A method of automatically retransmitting in accordance with HARQ processing, comprising:
- a first step of identifying a redundancy version in the preceding retransmission when a retransmission is needed, based on determination criteria which differ depending on whether the redundancy version in the preceding transmission handled systematic bits as priority or as nonpriority;
- and
- a second step of performing rate matching for each of the systematic bits and parity bits of data to be retransmitted in accordance with the redundancy version identified at said first step.
Dependencies are inferred from the claim text.