Modification of uplink (UL) data transmission with repetition in response to preemption indication

Patent metadata

Field	Value
Publication number	US-12335040-B2
Application number	US-202017766795-A
Country	US
Kind code	B2
Filing date	Oct 7, 2020
Priority date	Oct 7, 2019
Publication date	Jun 17, 2025
Grant date	Jun 17, 2025

Abstract

Modification of uplink (UL) data transmission with repetition in response to preemption indication is disclosed herein. In one embodiment, a wireless device modifies UL data transmission with repetition responsive to receiving a preemption indication. The wireless device begins a UL data transmission comprising a plurality of repetitions of a data transmission, wherein at least two (2) repetitions are associated with different Redundancy Version (RV) values. The wireless device receives a first preemption indication during a first repetition of the plurality of repetitions, wherein the first repetition is associated with a RV value of X, and X is a positive integer. The wireless device then retransmits the first repetition of the UL data transmission reusing the RV value of X. In some embodiments, after receiving the first preemption indication, the wireless device may cancel the UL data transmission if a code rate of the UL data transmission exceeds a threshold rate.

First claim

What is claimed is:

1. A method, performed by a wireless device, for modifying uplink, UL, data transmission with repetition in response to receiving a preemption indication, the method comprising:
beginning a UL data transmission comprising a plurality of repetitions of a data transmission, wherein at least two (2) repetitions are associated with different Redundancy Version, RV, values;
receiving a first preemption indication during a first repetition of the plurality of repetitions, wherein the first repetition is associated with a RV value of X, and X is a positive integer;
based on the first preemption indication, preempting the transmission of the first repetition to free up at least one resource;
after preempting the transmission of the first repetition and when the at least one resource is available again, retransmitting the first repetition of the UL data transmission that was preempted as a second repetition of the UL data transmission, wherein transmission of the second repetition reuses the RV value of X;
receiving a second preemption indication during transmission of the second repetition of the plurality of repetitions;
determining that the first repetition of the UL data transmission and the second repetition of the UL data transmission do not exceed a predefined percentage of a repetition associated with the RV; and
responsive to the determining, retransmitting the UL data transmission reusing the RV value of X.

2. The method of claim 1 , further comprising determining that the first repetition was pre-empted from its beginning;
wherein retransmitting the first repetition of the UL data transmission comprises retransmitting the first repetition of the UL data transmission reusing the RV value of X starting from a first granted but not pre-empted symbol, responsive to the determining.

3. A wireless device, adapted to:
begin an uplink, UL, data transmission comprising a plurality of repetitions of a data transmission, wherein at least two (2) repetitions are associated with different Redundancy Version, RV, values;
receive a first preemption indication during a first repetition of the plurality of repetitions, wherein the first repetition is associated with a RV value of X, and X is a positive integer;
based on the first preemption indication, preempt the transmission of the first repetition to free up at least one resource;
after preempting the transmission of the first repetition and when the at least one resource is available again, retransmit the first repetition of the UL data transmission that was preempted reusing the RV value of X as a second repetition of the UL data transmission, wherein transmission of the second repetition reuses the RV value of X;
receive a second preemption indication during transmission of the second repetition of the plurality of repetitions;
determine that the first repetition of the UL data transmission and the second repetition of the UL data transmission do not exceed a predefined percentage of a repetition associated with the RV; and
responsive to the determining, retransmit the UL data transmission reusing the RV value of X.

4. A wireless device, comprising
one or more transmitters;
one or more receivers; and
processing circuitry associated with the one or more transmitters and the one or more receivers, the processing circuitry configured to cause the wireless device to:
begin UL data transmission comprising a plurality of repetitions of a data transmission, wherein at least two (2) repetitions are associated with different Redundancy Version, RV, values;
receive a first preemption indication during a first repetition of the plurality of repetitions, wherein the first repetition is associated with a RV value of X, and X is a positive integer;
based on the first preemption indication, preempt the transmission of the first repetition to free up at least one resource; and
after preempting the transmission of the first repetition and when the at least one resource is available again, retransmit the first repetition of the UL data transmission that was preempted as a second repetition of the UL data transmission, wherein transmission of the second repetition reuses the RV value of X;
receive a second preemption indication during transmission of the second repetition of the plurality of repetitions;
determine that the first repetition of the UL data transmission and the second repetition of the UL data transmission do not exceed a predefined percentage of a repetition associated with the RV; and
responsive to the determining, retransmit the UL data transmission reusing the RV value of X.

5. A method, performed by a wireless device, for modifying uplink, UL, data transmission with repetition in response to receiving a preemption indication, the method comprising:
beginning UL data transmission comprising a first plurality of repetitions of a first data transmission, wherein at least two (2) repetitions are associated with different Redundancy Version, RV, values;
receiving a first preemption indication during a first repetition of the first plurality of repetitions, wherein the first repetition is associated with a RV value of X, and X is a positive integer;
determining a code rate of the first data transmission;
determining that the code rate of the first data transmission exceeds a threshold rate; and
responsive to determining that the code rate of the first data transmission exceeds the threshold rate, cancelling the first data transmission.

6. The method of claim 5 , further comprising:
beginning UL data transmission comprising a second plurality of repetitions of a second data transmission, wherein at least two (2) repetitions are associated with different RV values;
receiving a second preemption indication during a second repetition of the second plurality of repetitions, wherein the second repetition is associated with a RV value of X and X is a positive integer;
determining a code rate of the second data transmission;
determining that the code rate of the second data transmission does not exceed the threshold rate; and
responsive to determining that the code rate of the second data transmission does not exceed the threshold rate, continuing transmitting the second plurality of repetitions using an RV value of X+1.

7. A wireless device, adapted to:
begin an uplink, UL, data transmission comprising a first plurality of repetitions of a first data transmission, wherein at least two (2) repetitions are associated with different Redundancy Version, RV, values;
receive a first preemption indication during a first repetition of the first plurality of repetitions, wherein the first repetition is associated with a RV value of X and X is a positive integer;
determine a code rate of the first data transmission;
determine that the code rate of the first data transmission exceeds a threshold rate; and
responsive to determining that the code rate of the first data transmission exceeds the threshold rate, cancel the first data transmission.

8. The wireless device of claim 7 , further adapted to:
begin UL data transmission comprising a second plurality of repetitions of a second data transmission, wherein at least two (2) repetitions are associated with different RV values;
receive a second preemption indication during a second repetition of the second plurality of repetitions, wherein the second repetition is associated with a RV value of X and X is a positive integer;
determine a code rate of the second data transmission;
determine that the code rate of the second data transmission does not exceed the threshold rate; and
responsive to determining that the code rate of the second data transmission does not exceed the threshold rate, continue transmitting the se

Assignees

• Ericsson Telefon Ab L M

Inventors

• Behravan Ali
• Shapin Alexey
• Andersson Mattias

Classifications

• H04L1/1819

  with retransmission of additional or different redundancy · CPC title

• H04L1/08 Primary

  by repeating transmission, e.g. Verdan system {(H04L1/1858 and H04L1/189 take precedence)} · CPC title