Method and apparatus for efficiently utilizing HARQ processes for semi-persistent and dynamic data transmissions
AssigneeInterDigital Patent Holdings, Inc.
InventorsJin Wang, Guodong Zhang
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Abstract
A method and apparatus are disclosed for efficient hybrid automatic repeat request (HARQ) process utilization for semi-persistent and dynamic data transmissions, wherein a reserved HARQ process identification (ID) can be reused. A subset of a plurality of HARQ process IDs is reserved to use for a semi-persistent allocation, and data is transmitted based on the semi-persistent allocation. A dynamic allocation is received via a physical downlink control channel (PDCCH). At least one of the reserved HARQ process IDs is selectively used for transmitting data based on the dynamic allocation.
Claims29
A method for determining hybrid automatic repeat request (HARQ) resources at a wireless transmit receive unit (WTRU), the method comprising:
- receiving a radio resource control (RRC) message, the RRC message including a configuration that configures one or more HARQ process identification (IDs) for use with semi-persistent scheduling;
- determining a first HARQ process ID for a first downlink transmission, wherein the first downlink transmission occurs on a semi-persistent resource, the first HARQ process ID is one of the one or more HARQ process IDs configured for use with semi-persistent scheduling, and the first HARQ process ID is determined based at least in part on a system frame number (SFN) associated with the downlink transmission;
- and
- receiving a subsequent allocation for a dynamic downlink transmission that includes the first HARQ process ID, wherein the first HARQ process ID is used for the dynamic downlink transmission after HARQ processing has been completed for the first downlink transmission but before a subsequent downlink transmission occurs on the semi-persistent resource.
A wireless transmit receive unit (WTRU) comprising:
- a receiver configured to receive a radio resource control (RRC) message, the RRC message including a configuration that configures a plurality of HARQ process identification (IDs) for use with semi-persistent scheduling;
- and
- a processor configured to:
- determine a first HARQ process ID for a first downlink transmission, wherein the first downlink transmission occurs on a semi-persistent resource, the first HARQ process ID is one of the one or more HARQ process IDs configured for use with semi-persistent scheduling, and the first HARQ process ID is determined based at least in part on a system frame number (SFN) associated with the downlink transmission, the receiver being further configured to receive a subsequent allocation for a dynamic downlink transmission that includes the first HARQ process ID, and the first HARQ process ID is used for the dynamic downlink transmission after HARQ processing has been completed for the first downlink transmission but before a subsequent downlink transmission occurs on the semi-persistent resource.
An evolved Node-B (eNB) comprising:
- a transmitter configured to send a radio resource control (RRC) message to a wireless transmit receive unit (WTRU), the RRC message including a configuration that configures a plurality of HARQ process identification (IDs) for use with semi-persistent scheduling;
- a processor configured to:
- determine a first HARQ process ID for a first downlink transmission, wherein the first downlink transmission occurs on a semi-persistent resource, the first HARQ process ID is one of the one or more HARQ process IDs configured for use with semi-persistent scheduling, and the first HARQ process ID is determined based at least in part on a system frame number (SFN) associated with the downlink transmission, wherein the transmitter is further configured to send a subsequent allocation for a dynamic downlink transmission that includes the first HARQ process ID, and the first HARQ process ID is used for the dynamic downlink transmission after HARQ processing has been completed for the first downlink transmission but before a subsequent downlink transmission occurs on the semi-persistent resource.
Dependencies are inferred from the claim text.