FACILITATING INCREMENTAL DOWNLINK CONTROL INFORMATION DESIGN TO SUPPORT DOWNLINK CONTROL INFORMATION SCHEDULING

• US 20200136776A1
• Filed: 01/02/2020
• Published: 04/30/2020
• Est. Priority Date: 05/04/2017
• Status: Active Grant

• Current Assignee: AT&T Intellectual Property I LP (AT&T, Inc.)
• Original Assignee: AT&T Intellectual Property I LP (AT&T, Inc.)
• Inventors: Wang, Xiaoyi, Ghosh, Arunabha, Akoum, Salam, Bendlin, Ralf, Nammi, SaiRamesh
• Granted Patent: US 11,201,712 B2
• Time in Patent Office: Days
• CPC Class Codes: H04L 5/0051 of dedicated pilots, i.e. pilots destined for a single user or terminal
• CPC Class Codes: H04L 5/0053 Allocation of signaling, i.e. of overhead other than pilot signals
• CPC Class Codes: H04L 5/0092 Indication of how the channel is divided
• CPC Class Codes: H04W 72/23 in the downlink direction of a wireless link, i.e. towards a terminal

Abstract

A system facilitating incremental downlink control information (DCI) design to support DCI scheduling in a wireless communication system is provided. In one embodiment, the an apparatus comprises: a processor; and a memory that stores executable instructions that, when executed by the processor, facilitate performance of operations. The operations comprise: receiving first downlink control information associated with a first search space of a downlink control channel, wherein the first search space is of a first size; and receiving second downlink control information associated with a second search space of the downlink control channel, wherein the second search space is of a second size that is less than the first size, and wherein the second downlink control information comprises incremental downlink control information that is distinct from the first downlink control information.

Claims

1. An apparatus, comprising:

a processor; and

a memory that stores executable instructions that, when executed by the processor, facilitate performance of operations, comprising;

receiving first downlink control information associated with a first search space of a downlink control channel, wherein the first search space is of a first size; and

receiving second downlink control information, wherein the second downlink control information comprises incremental downlink control information, wherein the incremental downlink control information comprises a first scheduling grant for a first user data packet to be transmitted from a wireless device to the apparatus, and wherein the incremental downlink control information specifies the first user data packet on a first downlink traffic channel.

2. The apparatus of claim 1, wherein baseline downlink control information schedules a rank 1 physical downlink shared channel while the incremental downlink control information schedules a subband high rank physical downlink shared channel with a second rank higher than rank 1 and configured to overwrite scheduling based on the baseline downlink control information.

3. The apparatus of claim 1, wherein the first downlink control information is associated with baseline downlink control information that comprises a second scheduling grant for a second user data packet to be transmitted from the wireless device to the apparatus.

4. The apparatus of claim 3, wherein the baseline downlink control information specifies the second user data packet on a first downlink traffic channel.

5. The apparatus of claim 3, wherein the operations further comprise:

transmitting the second user data packet on an uplink channel at a first time specified by the second scheduling grant; and

transmitting the first user data packet on the uplink channel a second time specified by the first scheduling grant.

6. The apparatus of claim 1, wherein the operations further comprise, after the receiving the first downlink control information, blind decoding the first search space to determine a location within a second search space at which to decode the second downlink control information.

7. The apparatus of claim 6, wherein the location within the second search space at which to decode the second downlink control information is specified by bits within the first search space.

8. A method, comprising:

receiving, by a system coupled to a processor, first downlink control information associated with a first search space of a downlink control channel, wherein the first search space is of a first size; and

receiving, by the system, second downlink control information, wherein the second downlink control information comprises incremental downlink control information, wherein the incremental downlink control information comprises a first scheduling grant for a first user data packet to be transmitted from a wireless device to the apparatus, and wherein the incremental downlink control information specifies the first user data packet on a first downlink traffic channel.

9. The method of claim 8, wherein baseline downlink control information schedules a rank 1 physical downlink shared channel while the incremental downlink control information schedules a subband high rank physical downlink shared channel with a second rank higher than rank 1 and configured to overwrite scheduling based on the baseline downlink control information.

10. The method of claim 8, wherein the first downlink control information is associated with baseline downlink control information that comprises a second scheduling grant for a second user data packet to be transmitted from the wireless device to the apparatus.

11. The method of claim 10, wherein the baseline downlink control information specifies the second user data packet on a first downlink traffic channel.

12. The method of claim 10, further comprising:

transmitting, by the system, the second user data packet on an uplink channel at a first time specified by the second scheduling grant; and

transmitting, by the system, the first user data packet on the uplink channel a second time specified by the first scheduling grant.

13. The method of claim 8, further comprising:

after the receiving the first downlink control information, blind decoding, by the system, the first search space to determine a location within a second search space at which to decode the second downlink control information.

14. The method of claim 13, wherein the location within the second search space at which to decode the second downlink control information is specified by bits within the first search space.

15. A machine-readable storage medium, comprising executable instructions that, when executed by a processor, facilitate performance of operations, comprising:

receiving first downlink control information associated with a first search space of a downlink control channel, wherein the first search space is of a first size; and

receiving second downlink control information, wherein the second downlink control information comprises incremental downlink control information, wherein the incremental downlink control information comprises a first scheduling grant for a first user data packet to be transmitted from a wireless device to the apparatus, and wherein the incremental downlink control information specifies the first user data packet on a first downlink traffic channel.

16. The machine-readable storage medium of claim 15, wherein baseline downlink control information schedules a rank 1 physical downlink shared channel while the incremental downlink control information schedules a subband high rank physical downlink shared channel with a second rank higher than rank 1 and configured to overwrite scheduling based on the baseline downlink control information.

17. The machine-readable storage medium of claim 15, wherein the first downlink control information is associated with baseline downlink control information that comprises a second scheduling grant for a second user data packet to be transmitted from the wireless device to the apparatus.

18. The machine-readable storage medium of claim 17, wherein the baseline downlink control information specifies the second user data packet on a first downlink traffic channel.

19. The machine-readable storage medium of claim 15, wherein the operations further comprise:

transmitting the second user data packet on an uplink channel at a first time specified by the second scheduling grant; and

transmitting the first user data packet on the uplink channel at a second time specified by the first scheduling grant.

20. The machine-readable storage medium of claim 15, wherein the operations further comprise:

after the receiving the first downlink control information, blind decoding the first search space to determine a location within a second search space at which to decode the second downlink control information.