DOWNLINK AND UPLINK CHANNEL TRANSMISSION AND MONITORING IN A WIRELESS NETWORK

• US 20170223676A1
• Filed: 01/30/2017
• Published: 08/03/2017
• Est. Priority Date: 02/03/2016
• Status: Active Grant

• Current Assignee: Comcast Cable Communications LLC (Comcast Corporation)
• Original Assignee: Ofinno Technologies, LLC
• Inventors: Babaei, Alireza, Dinan, Esmael Hejazi
• Granted Patent: US 10,548,121 B2
• Time in Patent Office: Days
• CPC Class Codes: H04W 72/0446 Resources in time domain, e.g. slots or frames
• CPC Class Codes: H04W 72/23 in the downlink direction of a wireless link, i.e. towards a terminal

Abstract

A wireless device receives one or more radio resource control (RRC) messages comprising configuration parameters for a first licensed assisted access (LAA) cell and a second LAA cell. The wireless device selectively monitors, in a first subframe, a downlink physical control channel (PDCCH) on a first LAA cell, depending on whether there is an uplink transmission in the first subframe on the second LAA cell.

Claims

1. A method comprising:

receiving, by a wireless device, one or more radio resource control (RRC) messages comprising configuration parameters for a first licensed assisted access (LAA) cell and a second LAA cell; and

selectively monitoring, in a first subframe, a downlink physical control channel (PDCCH) on the first LAA cell, depending on whether there is an uplink transmission in the first subframe on the second LAA cell.

2. The method of claim 1, wherein the selectively monitoring does not occur when the uplink transmission is in the first subframe on the second LAA cell.

3. The method of claim 1, wherein the uplink transmission is a physical uplink shared channel (PUSCH) transmission.

4. The method of claim 1, wherein the PDCCH is an enhanced PDCCH.

5. The method of claim 1, wherein the first LAA cell and the second LAA cell belong to a first cell group.

6. The method of claim 5, wherein the first cell group comprises a plurality of cells that operate in a first frequency band.

7. The method of claim 5, wherein the one or more RRC message further comprise one or more configuration parameters of the first cell group.

8. The method of claim 1, wherein the first subframe for the second LAA cell is a partial uplink subframe.

9. The method of claim 1, wherein the first subframe for the second LAA cell is a full uplink subframe.

10. The method of claim 1, wherein the first LAA cell and the second LAA cell operate according to frame structure Type 3.

11. A wireless device comprising:

one or more processors; and

memory storing instructions that, when executed by the one or more processors, cause the wireless device to;

receive one or more radio resource control (RRC) messages comprising configuration parameters for a first licensed assisted access (LAA) cell and a second LAA cell; and

selectively monitor, in the first subframe, a downlink physical control channel (PDCCH) on a first LAA cell, depending on whether there is an uplink transmission in the first subframe on the second LAA cell.

12. The wireless device of claim 11, wherein the selectively monitoring does not occur when the uplink transmission is in the first subframe on the second LAA cell.

13. The wireless device of claim 11, wherein the uplink transmission is a physical uplink shared channel (PUSCH) transmission.

14. The wireless device of claim 11, wherein the PDCCH is an enhanced PDCCH.

15. The wireless device of claim 11, wherein the first LAA cell and the second LAA cell belong to a first cell group.

16. The wireless device of claim 15, wherein the first cell group comprises a plurality of cells, that operate in a first frequency band.

17. The wireless device of claim 15, wherein the one or more RRC message further comprises one or more configuration parameters of the first cell group.

18. The wireless device of claim 11, wherein the first subframe for the second LAA cell is a partial uplink subframe.

19. The wireless device of claim 11, wherein the first subframe for the second LAA cell is a full uplink subframe.

20. The wireless device of claim 11, wherein the first LAA cell and the second LAA cell operate according to frame structure Type 3.