Back to results
US 10,374,783 B2Granted
Scheduling timing design for a TDD system
AssigneeIntel Corporation
InventorsHong He, Jong-Kae Fwu, Rui Huang
Life of this patent
Estimating the term…
Abstract
Disclosed is a method of transmitting, from an enhanced Node B (eNB), an indication of an uplink/downlink (UL-DL) subframe configuration of a scheduling cell and a scheduled cell in a wireless time-division duplex (TDD) system. Embodiments include identifying the type of the UL-DL subframe configuration of the scheduling cell and determining a UL-DL subframe configuration to use for UL resource allocation of the scheduled cell. Other embodiments include identifying a reference UL-DL subframe configuration to use for UL resource allocation of the scheduled cell.
Claims31
A system comprising:
- a receiver to receive, at a user equipment (UE), an indication of an uplink/downlink (UL-DL) subframe configuration of a scheduling cell in a wireless time-division duplex (TDD) system that utilizes cross-carrier scheduling;
- the receiver further to receive an indication of a UL-DL subframe configuration of a scheduled cell in the wireless TDD system, the UL-DL subframe configuration of the scheduled cell being different from the UL-DL subframe configuration of the scheduling cell;
- and
- a processor to identify a reference UL-DL subframe configuration based at least in part on the UL-DL subframe configurations of the scheduling cell and scheduled cell;
- wherein the receiver is further to receive, from the scheduling cell of an enhanced NodeB (eNB), a hybrid automatic repeat request (HARD) signal of the scheduled cell according to a subframe timing of the reference UL-DL subframe configuration;
- and
- wherein:
- the reference UL-DL subframe configuration is equal to 6 if the UL-DL subframe configuration of the scheduling cell is equal to 1, 2, 3, or 4, and the UL-DL subframe configuration of the scheduled cell is equal to 6;
- the reference UL-DL subframe configuration is equal to 0 if the UL-DL subframe configuration of the scheduling cell is equal to 3 or 4, and the UL-DL subframe configuration of the scheduled cell is equal to 0;
- and
- the reference UL-DL subframe configuration is equal to 1 if the UL-DL subframe configuration of the scheduling cell is equal to 4 and the UL-DL subframe configuration of the scheduled cell is equal to 1.
8 more elements
An enhanced NodeB (eNB) comprising:
- a processor to:
- determine respective uplink/downlink (UL-DL) subframe configurations of a scheduling cell and a scheduled cell in a wireless time-division duplex (TDD) system that utilizes cross-carrier scheduling, the UL-DL subframe configuration of the scheduled cell being different from the UL-DL subframe configuration of the scheduling cell;
- and
- determine a reference UL-DL subframe configuration based at least in part on the UL-DL subframe configurations of the scheduling cell and the scheduled cell;
- and
- a transmitter to transmit to a user equipment (UE):
- an indication of the UL-DL subframe configuration of the scheduling cell;
- an indication of the UL-DL subframe configuration of the scheduled cell;
- and
- an indication of the reference UL-DL subframe configuration;
- wherein the transmitter is further to transmit a hybrid automatic repeat request (HARQ) signal comprising a positive or negative acknowledgement signal of the scheduled cell in a downlink subframe of the scheduling cell;
- and
- wherein:
- the reference UL-DL subframe configuration is equal to 1 if the UL-DL subframe configuration of the scheduling cell is equal to 1 and the UL-DL subframe configuration of the scheduled cell is equal to 2, 4, or 5;
- the reference UL-DL subframe configuration is equal to 2 if the UL-DL subframe configuration of the scheduling cell is equal to 2 and the UL-DL subframe configuration of the scheduled cell is equal to 5;
- the reference UL-DL subframe configuration is equal to 3 if the UL-DL subframe configuration of the scheduling cell is equal to 3 and the UL-DL subframe configuration of the scheduled cell is equal to 4 or 5;
- the reference UL-DL subframe configuration is equal to 4 if the UL-DL subframe configuration of the scheduling cell is equal to 4 and the UL-DL subframe configuration of the scheduled cell is equal to 5;
- the reference UL-DL subframe configuration is equal to 6 if the UL-DL subframe configuration of the scheduling cell is equal to 1, 2, 3, or 4, and the UL-DL subframe configuration of the scheduled cell is equal to 6.
15 more elements
One or more non-transitory computer-readable media comprising instructions to cause a user equipment (UE), upon execution of the instructions by one or more processors of the UE, to:
- receive an indication of an uplink/downlink (UL-DL) subframe configuration of a scheduling cell in a wireless time-division duplex (TDD) system that utilizes cross-carrier scheduling;
- receive an indication of a UL-DL subframe configuration of a scheduled cell in the wireless TDD system that utilizes the cross-carrier scheduling, the UL-DL subframe configuration of the scheduled cell being different from the UL-DL subframe configuration of the scheduling cell;
- identify a reference UL-DL subframe configuration based at least in part on the UL-DL subframe configurations of the scheduling cell and scheduled cell;
- and
- receive, from the scheduling cell, a hybrid automatic repeat request (HARD) signal of the scheduled cell according to a subframe timing of the reference UL-DL subframe configuration;
- wherein:
- the reference UL-DL subframe configuration is equal to 0 if the UL-DL subframe configuration of the scheduling cell is equal to 6 and the UL-DL subframe configuration of the scheduled cell is equal to 0;
- the reference UL-DL subframe configuration is equal to 1 if the UL-DL subframe configuration of the scheduling cell is equal to 0 or 6, and the UL-DL subframe configuration of the scheduled cell is equal to 1, 2, or 5;
- the reference UL-DL subframe configuration is equal to 3 if the UL-DL subframe configuration of the scheduling cell is equal to 0 or 6, and the UL-DL subframe configuration of the scheduled cell is equal to 3;
- the reference UL-DL subframe configuration is equal to 6 if the UL-DL subframe configuration of the scheduling cell is equal to 0 and the UL-DL subframe configuration of the scheduled cell is equal to 6;
- and
- the reference UL-DL subframe configuration is equal to 4 if the UL-DL subframe configuration of the scheduling cell is equal to 6 and the UL-DL subframe configuration of the scheduled cell is equal to 4.
9 more elements
One or more non-transitory computer-readable media comprising instructions to cause an enhanced NodeB (eNB), upon execution of the instructions by one or more processors of the eNB, to:
- determine respective uplink/downlink (UL-DL) subframe configurations of a scheduling cell and a scheduled cell in a wireless time-division duplex (TDD) system that utilizes cross-carrier scheduling, the UL-DL subframe configuration of the scheduled cell being different from the UL-DL subframe configuration of the scheduling cell;
- determine a reference UL-DL subframe configuration based at least in part on the UL-DL subframe configurations of the scheduling cell and the scheduled cell;
- transmit, to a user equipment (UE), an indication of the UL-DL subframe configuration of the scheduling cell and an indication of the UL-DL subframe configuration of the scheduled cell;
- and
- transmit a hybrid automatic repeat request (HARQ) signal comprising a positive or negative acknowledgement signal of the scheduled cell in a downlink subframe of the scheduling cell according to the reference UL-DL subframe configuration;
- wherein:
- the reference UL-DL subframe configuration is equal to 1 if the UL-DL subframe configuration of the scheduling cell is equal to 1 and the UL-DL subframe configuration of the scheduled cell is equal to 2, 4, or 5;
- the reference UL-DL subframe configuration is equal to 2 if the UL-DL subframe configuration of the scheduling cell is equal to 2 and the UL-DL subframe configuration of the scheduled cell is equal to 5;
- the reference UL-DL subframe configuration is equal to 3 if the UL-DL subframe configuration of the scheduling cell is equal to 3 and the UL-DL subframe configuration of the scheduled cell is equal to 4 or 5;
- the reference UL-DL subframe configuration is equal to 4 if the UL-DL subframe configuration of the scheduling cell is equal to 4 and the UL-DL subframe configuration of the scheduled cell is equal to 5;
- the reference UL-DL subframe configuration is equal to 6 if the UL-DL subframe configuration of the scheduling cell is equal to 1, 2, 3, or 4, and the UL-DL subframe configuration of the scheduled cell is equal to 6.
8 more elements
Dependencies are inferred from the claim text.