IP Library › Granted Patent US 8,665,796
Granted Patent B2
US 8,665,796 · App. 13/476,713 · Granted Mar 4, 2014

Method and system for dynamic ACK/NACK repetition for robust downlink MAC PDU transmission in LTE

View Patent ↗
Loading inventors, assignments & file history…
Monitor This Case
Get email alerts when status or documents change.
Order Certified Copies
Most orders are placed with the USPTO same day — all within 24 business hours.
Order via The Patent Place →
Pre-filled with this patent's details
Quick Facts
Patent No.
US 8,665,796
App. No.
13/476,713
Filed
May 21, 2012
Granted
Mar 4, 2014
Kind
B2
Art Unit
2476
USPC
370/328
Abstract

A method and apparatus for dynamic acknowledgement repetition for a downlink medium access control packet data unit transmission ‘MAC PDU’ requiring multiple acknowledgements, the method having the steps of: receiving the downlink MAC PDU requiring multiple acknowledgements; and utilizing a differentiating factor and acknowledgement scheme, sending the multiple acknowledgements.

Claims (29)

1. A method performed by a network apparatus, the method comprising:

obtaining acknowledgement (ACK) or negative acknowledgement (HACK) feedback regarding a downlink transmission to a user equipment, said obtaining including

receiving a first ACK/NACK feedback response in a first subframe from the user equipment via a first uplink transmission resource, and

receiving a plurality of additional ACK/NACK feedback responses from the user equipment, each of the plurality of additional ACK/NACK feedback responses being received in a respective subframe of a second uplink transmission resource that is different from the first uplink transmission resource, wherein each respective subframe of the second uplink transmission resource is a different transmission subframe from the first subframe of the first trans ion resource.

2. The method of claim 1 further comprising combining the first ACK/NACK feedback response with the plurality of additional ACK/NACK feedback responses.

3. The method of claim 1 , wherein each of the plurality of additional ACK/NACK feedback responses is a repetition of the first ACK/NACK feedback response.

4. The method of claim 1 , further comprising transmitting a dedicated message to the user equipment configuring ACK/NACK feedback repetition.

5. The method of claim 1 , wherein the first uplink transmission resource and the second uplink transmission resource utilize a different cyclic shift.

6. A network element comprising:

a communications system;

a processor; and

a memory storing instructions which, when executed by the processor, cause the processor to:

obtain acknowledgement (ACK) or negative acknowledgement (NACK) feedback regarding a downlink transmission to a user equipment by

receiving a first ACK/NACK feedback response in a first subframe from the user equipment via a first uplink transmission resource and

receiving a plurality of additional ACK/NACK feedback responses from the user equipment, each of the plurality of additional ACK/NACK feedback responses being received in a respective subframe of a second uplink transmission resource that is different from the first uplink transmission resource, wherein each respective subframe of the second uplink transmission resource is a different transmission subframe from the first subframe of the first transmission resource.

7. The network element of claim 6 wherein the memory further stores instructions which, when executed by the processor, cause the processor to combine the first ACK/NACK feedback response with the plurality of additional ACK/NACK feedback responses.

8. The network element of claim 6 , wherein each of the plurality of additional ACK/NACK feedback responses is a repetition of the first ACK/NACK feedback response.

9. The network element of claim 6 , wherein the memory further stores instructions which, when executed by the processor, cause the processor to transmit a dedicated message to the user equipment configuring ACK/NACK feedback repetition.

10. The network element of claim 6 , wherein the first uplink transmission resource and the second uplink transmission resource utilize a different cyclic shift.

11. A non-transitory computer-readable medium storing instructions which, when executed by a processor, cause the processor to perform operations comprising:

obtaining acknowledgement (ACK) or negative acknowledgement (NACK) feedback regarding a downlink transmission to user equipment, said obtaining including

receiving a first ACK/NACK feedback response in a first subframe from the user equipment via a first uplink transmission resource, and

receiving a plurality of additional ACK/NACK feedback responses from the user equipment, each of the plurality of additional ACK/NACK feedback responses being received in a respective subframe of a second uplink transmission resource that is different from the first uplink transmission resource, wherein each respective subframe of the second uplink transmission resource is a different transmission subframe from the first subframe of the first transmission resource.

12. The non-transitory computer-readable medium of claim 11 , wherein the instructions, when executed by a processor, further cause the processor to perform operations comprising:

combining the first ACK/NACK feedback response with the plurality of additional ACK/NACK feedback responses.

13. The non-transitory computer-readable medium of claim 11 , wherein each of the plurality of additional ACK/NACK feedback responses is a repetition of the first ACK/NACK feedback response.

14. The non-transitory computer-readable medium of claim 11 , wherein the instructions, when executed by a processor, further cause the processor to perform operations comprising:

transmitting a dedicated message to the user equipment configuring ACK/NACK feedback repetition.

15. The method of claim 11 , wherein the first uplink transmission resource and the second uplink transmission resource utilize a different cyclic shift.