IP Library › Granted Patent US 11,528,742
Granted Patent B2
US 11,528,742 · App. 17/090,207 · Granted Dec 13, 2022

Systems and methods for autonomous transmission of deprioritized protocol data units

Inventors: Vinay Joseph (Calicut, IN); Ozcan Ozturk (San Diego, CA); Rajat Prakash (San Diego, CA); Arnaud Meylan (San Diego, CA)
Assignee: QUALCOMM Incorporated
H04W72/14H04L1/1812H04L5/0053H04W72/0413H04W72/1242H04W80/02
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 11,528,742
App. No.
17/090,207
Granted
Dec 13, 2022
Kind
B2
Abstract

Wireless communications systems and methods relate to an automatic transmission scheme for a de-prioritized protocol data unit (PDU) when the originally assigned configured grant for the PDU is de-prioritized due to channel conflicts. Specifically, a user equipment may obtain a PDU for transmission over a first configured grant physical uplink shared channel (PUSCH) instance. The UE may then detect de-prioritization information that the first configured grant PUSCH instance is de-prioritized due to channel overlapping, and then automatically transmit the PDU originally associated with the first configured grant PUSCH instance over a second configured grant PUSCH instance.

Claims (56)

1. A method of wireless communication, comprising:

obtaining, at a user equipment (UE), a protocol data unit (PDU) for transmission over a first configured grant physical uplink shared channel (PUSCH) instance;

detecting, at the UE, de-prioritization information that the first configured grant PUSCH instance is de-prioritized due to channel overlapping;

terminating, at the UE, a configured grant retransmission timer that has been running in response to receiving the de-prioritization information; and

automatically transmitting the PDU originally associated with the first configured grant PUSCH instance over a second configured grant PUSCH instance without waiting for base station (BS) scheduling information that schedules a retransmission grant for transmitting the PDU.

2. The method of claim 1 , wherein the configured grant retransmission timer is greater than or equal to the configured grant timer.

3. The method of claim 1 , wherein the de-prioritization information is detected based on an indication from a physical layer of the UE.

4. The method of claim 1 , wherein the de-prioritization information is detected based on an indication to a medium access control (MAC) layer of the UE.

5. The method of claim 1 , wherein the second configured grant PUSCH instance has a first symbol starting at a time that is more than a threshold duration apart from an instance of de-prioritization or an end of a last symbol of the first configured grant PUSCH instance.

6. The method of claim 5 , wherein the threshold duration is configured by a network.

7. The method of claim 6 , wherein the threshold duration is configured by the network based on one or more of a PUSCH preparation time or sub-carrier spacing.

8. The method of claim 7 , further comprising:

discarding the PDU in response to determining that a threshold number of automatic transmission attempts of the PDU originally associated with the first configured grant PUSCH instance over a new configured grant PUSCH instance has been reached.

9. The method of claim 8 , wherein the threshold number is configured by a network.

10. The method of claim 5 , wherein the first configured grant instance is associated with a configured grant configuration that is determined or considered to be allowed based in part on the threshold duration.

11. The method of claim 10 , wherein the configured grant configuration includes one or more of a configured grant periodicity, repetitions, a configured grant timer or a configured grant retransmission timer.

12. The method of claim 1 , further comprising:

in response to receiving additional de-prioritization information that the second configured grant PUSCH instance is also de-prioritized, automatically transmitting the PDU originally associated with the first configured grant PUSCH instance over a third configured grant PUSCH instance.

13. The method of claim 1 , further comprising:

discarding the PDU in response to determining that the second configured grant PUSCH instance is unable to transmit the PDU.

14. The method of claim 13 , wherein the determining that the second configured grant PUSCH instance is unable to transmit the PDU comprises:

determining that a transport block size of the second configured grant PUSCH instance is smaller than one of:

a transport block size of the first configured grant PUSCH instance, and

a size of the PDU.

15. A user equipment (UE) of wireless communication, comprising:

a processor configured to:

obtain a protocol data unit (PDU) for transmission over a first configured grant physical uplink shared channel (PUSCH) instance, and

detect, at the UE, de-prioritization information that the first configured grant PUSCH instance is de-prioritized due to channel overlapping;

terminate a configured grant retransmission timer that has been running in response to receiving the de-prioritization information; and

a transceiver configured to automatically transmit the PDU originally associated with the first configured grant PUSCH instance over a second configured grant PUSCH instance without waiting for base station (BS) scheduling information that schedules a retransmission grant for transmitting the PDU.

16. The UE of claim 15 , wherein the configured grant retransmission timer is greater than or equal to the configured grant timer.

17. The UE of claim 15 , wherein the de-prioritization information is detected based on an indication from a physical layer of the UE.

18. The UE of claim 15 , wherein the de-prioritization information is detected based on an indication to a medium access control (MAC) layer of the UE.

19. The UE of claim 15 , wherein the second configured grant PUSCH instance has a first symbol starting at a time that is more than a threshold duration apart from an instance of de-prioritization or an end of a last symbol of the first configured grant PUSCH instance.

20. The UE of claim 19 , wherein the threshold duration is configured by a network.

21. The UE of claim 20 , wherein the threshold duration is configured by the network based on one or more of a PUSCH preparation time or sub-carrier spacing.

22. The UE of claim 21 , wherein the processor is further configured to:

discard the PDU in response to determining that a threshold number of automatic transmission attempts of the PDU originally associated with the first configured grant PUSCH instance over a new configured grant PUSCH instance has been reached.

23. The UE of claim 19 , wherein the first configured grant instance is associated with a configured grant configuration that is determined or considered to be allowed based in part on the threshold duration.

24. The UE of claim 23 , wherein the configured grant configuration includes one or more of a configured grant periodicity, repetitions, a configured grant timer or a configured grant retransmission timer.

25. The UE of claim 15 , wherein the transceiver is further configured to:

in response to receiving additional de-prioritization information that the second configured grant PUSCH instance is also de-prioritized, automatically transmit the PDU originally associated with the first configured grant PUSCH instance over a third configured grant PUSCH instance.

26. The UE of claim 15 , wherein the processor is further configured to:

determine that the second configured grant PUSCH instance is unable to transmit the PDU by:

determining that a transport block size of the second configured grant PUSCH instance is smaller than one of:

a transport block size of the first configured grant PUSCH instance, and

a size of the PDU.

27. A processor-readable non-transitory storage medium storing processor-executable instructions for wireless communication, the instructions being executed by a processor to perform operations comprising:

obtaining, at a user equipment (UE), a protocol data unit (PDU) for transmission over a first configured grant physical uplink shared channel (PUSCH) instance;

detecting, at the UE, de-prioritization information that the first configured grant PUSCH instance is de-prioritized due to channel overlapping;

terminate a configured grant retransmission timer that has been running in response to receiving the de-prioritization information; and automatically transmitting the PDU originally associated with the first configured grant PUSCH instance over a second configured grant PUSCH instance without waiting for base station (BS) scheduling information that schedules a retransmission grant for transmitting the PDU.

28. A system of wireless communication, comprising:

means for obtaining, at a user equipment (UE), a protocol data unit (PDU) for transmission over a first configured grant physical uplink shared channel (PUSCH) instance;

means for detecting, at the UE, de-prioritization information that the first configured grant PUSCH instance is de-prioritized due to channel overlapping;

means for terminating a configured grant retransmission timer that has been running in response to receiving the de-prioritization information; and

means for automatically transmitting the PDU originally associated with the first configured grant PUSCH instance over a second configured grant PUSCH instance without waiting for base station (BS) scheduling information that schedules a retransmission grant for transmitting the PDU.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Feb 3, 2021
From: JOSEPH, VINAY; OZTURK, OZCAN; PRAKASH, RAJAT; MEYLAN, ARNAUD
To: QUALCOMM INCORPORATED
Reel/Frame 055128/0719 →
Continuity (2)
Provisional Application 62932326 · Nov 7, 2019
Related Publication 20210144751A1 · May 13, 2021