IP Library › Granted Patent US 10,374,783

Granted Patent B2

US 10,374,783 · App. 15/594,267 · Granted Aug 6, 2019

Scheduling timing design for a TDD system

Inventors: Hong He (Beijing, CN); Jong-Kae Fwu (Sunnyvale, CA); Rui Huang (Beijing, CN)

Assignee: Intel Corporation

H04L5/1446 H04L1/0033 H04L1/1635 H04L1/189 H04L1/1812 H04L1/1825 H04L1/1854 H04L1/1864 H04L1/1877 H04L1/1887 H04L1/1896 H04L5/001 H04L5/0053 H04L5/0055 H04L5/0073 H04L5/14 H04L5/1438 H04L5/1469 H04L12/189 H04L12/2854 H04L47/283 H04L47/6275 H04L65/601 H04L67/02 H04L67/2842 H04N21/25841 H04N21/41407 H04N21/6405 H04N21/6408 H04W4/06 H04W24/00 H04W24/02 H04W28/0236 H04W28/0268 H04W28/0278 H04W52/02 H04W52/0206 H04W52/0209 H04W52/0235 H04W52/243 H04W72/04 H04W72/042 H04W72/0406 H04W72/048 H04W72/0413 H04W72/0426 H04W72/082 H04W72/1205 H04W72/1242 H04W72/1273 H04W72/1284 H04W74/085 H04W76/27 H04W76/28 H04J11/0073 H04L1/1819 H04W52/0229 H04W52/143 H04W72/0446 H04W72/1268 Y02D70/00 Y02D70/1224 Y02D70/1242 Y02D70/1244 Y02D70/1246 Y02D70/1262 Y02D70/1264 Y02D70/142 Y02D70/144 Y02D70/146 Y02D70/164 Y02D70/21 Y02D70/22 Y02D70/23 Y02D70/24

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Quick Facts

Patent No.: US 10,374,783
App. No.: 15/594,267
Granted: Aug 6, 2019
Kind: B2

External Links

USPTO Patent Center↗ Full Patent PDF↗

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.

Claims (117)

1. 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.

2. The system of claim 1 , 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; and

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.

3. The system of claim 1 , wherein:

the reference UL-DL subframe configuration is equal to 3 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 3; and

the reference UL-DL subframe configuration is equal to 4 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 4.

4. The system of claim 1 , 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.

5. The system of claim 1 , wherein the scheduled cell is a secondary serving cell, and wherein the scheduling cell is a primary service cell or another secondary serving cell.

6. The system of claim 1 , wherein the receiver is further to receive an identification of the reference UL-DL subframe configuration via one or more radio resource control (RRC) signals.

7. The system of claim 1 , wherein the processor is further to identify the reference UL-DL subframe configuration via a table stored in a memory of the UE.

8. The system of claim 1 , wherein at least one of the UL-DL subframe configuration of the scheduled cell, the UL-DL subframe configuration of the scheduling cell, and the reference UL-DL subframe configuration correspond to one of TDD UL-DL configurations 0-6 associated with 3 rd Generation Partnership Project's (3GPP's) long-term evolution (LTE) advanced wireless communication standard; and

wherein the system is a mobile phone, a netbook, a laptop, an electronic tablet, or a data system of a vehicle.

9. The system of claim 1 , wherein the receiver is further to receive the HARQ signal of the scheduled cell in a downlink subframe of the scheduling cell; and

wherein the HARQ signal comprises a positive or negative acknowledgement signal.

10. The system of claim 1 , wherein the indication of the UL-DL subframe configuration of the scheduling cell is received in a system information block of a signal of the scheduling cell.

11. 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:

12. The eNB of claim 11 , wherein the indication of the reference UL-DL subframe configuration is transmitted in radio resource control (RRC) signaling.

13. The eNB of claim 11 , wherein the scheduled cell is a secondary serving cell, and wherein the scheduling cell is a primary service cell or another secondary serving cell.

14. The eNB of claim 11 , wherein at least one of the UL-DL subframe configuration of the scheduled cell, the UL-DL subframe configuration of the scheduling cell, and the reference UL-DL subframe configuration are one of TDD UL-DL configurations 0-6 associated with 3 rd Generation Partnership Project's (3GPP's) long-term evolution (LTE) advanced wireless communication standard.

15. The eNB of claim 11 , wherein:

16. 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:

17. The one or more non-transitory computer-readable media of claim 16 , wherein:

18. The one or more non-transitory computer-readable media of claim 16 , wherein:

19. The one or more non-transitory computer-readable media of claim 16 , wherein the indication of the UL-DL subframe configuration of the scheduling cell is received in a system information block of a signal of the scheduling cell.

20. The one or more non-transitory computer-readable media of claim 16 , wherein:

21. The one or more non-transitory computer-readable media of claim 16 , wherein the scheduling cell is a primary service cell or a secondary serving cell; and

wherein the scheduled cell is a secondary serving cell.

22. The one or more non-transitory computer-readable media of claim 16 , wherein the instructions are further to receive an identification of the reference UL-DL subframe configuration via one or more radio resource control (RRC) signals.

23. The one or more non-transitory computer-readable media of claim 16 , wherein the instructions are further to identify the reference UL-DL subframe configuration via a table stored in a memory of the UE.

24. The one or more non-transitory computer-readable media of claim 16 , wherein at least one of the UL-DL subframe configuration of the scheduled cell, the UL-DL subframe configuration of the scheduling cell, and the reference UL-DL subframe configuration correspond to one of TDD UL-DL configurations 0-6 associated with 3rd Generation Partnership Project's (3GPP's) long-term evolution (LTE) advanced wireless communication standard; and

wherein the UE is a mobile phone, a netbook, a laptop, an electronic tablet, or a data system of a vehicle.

25. The one or more non-transitory computer-readable media of claim 16 , wherein the reference UL-DL subframe configuration is different from the UL-DL subframe configuration of either the scheduling cell or the scheduled cell.

26. The one or more non-transitory computer-readable media of claim 16 , wherein the HARQ signal of the scheduled cell is received in a downlink subframe of the scheduling cell; and

wherein the HARQ signal comprises a positive or negative acknowledgement signal.

27. 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 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:

28. The one or more non-transitory computer-readable media of claim 27 , wherein the instructions, when executed, are further to cause the eNB to transmit, to the UE, an indication of the reference UL-DL subframe configuration.

29. The one or more non-transitory computer-readable media of claim 27 , wherein the scheduling cell is a primary service cell or a secondary serving cell; and

wherein the scheduled cell is a secondary serving cell.

30. The one or more non-transitory computer-readable media of claim 27 , wherein at least one of the UL-DL subframe configuration of the scheduled cell, the UL-DL subframe configuration of the scheduling cell, and the reference UL-DL subframe configuration are one of TDD UL-DL configurations 0-6 associated with 3rd Generation Partnership Project's (3GPP's) long-term evolution (LTE) advanced wireless communication standard.

31. The one or more non-transitory computer-readable media of claim 27 , wherein:

Assignments (1)

ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Mar 20, 2020

From: INTEL CORPORATION

To: APPLE INC.

Reel/Frame 052916/0308 →

Continuity (3)

Continuation 13716978 · Dec 17, 2012

Provisional Application 61612188 · Mar 16, 2012

Related Publication 20170250790A1 · Aug 31, 2017