Logical channel prioritization in unlicensed spectrum

Patent metadata

Field	Value
Publication number	US-12592794-B2
Application number	US-202218260966-A
Country	US
Kind code	B2
Filing date	Jan 11, 2022
Priority date	Jan 13, 2021
Publication date	Mar 31, 2026
Grant date	Mar 31, 2026

Abstract

A wireless device is configured with a first configured grant associated with a first hybrid automatic repeat request (HARQ) pool and a second configured grant associated with a second HARQ pool. The first HARQ pool at least partially overlaps with the second HARQ pool, and the second configured grant partially overlaps with the first configured grant. For the first configured grant, the wireless device selects a first HARQ process from the first HARQ pool. For the second configured grant, the wireless device selects a second HARQ process from the second HARQ pool. The first HARQ process selected for the first configured grant is different than the second HARQ process selected for the second configured grant. The wireless device performs uplink transmission or retransmission for the first configured grant or the second configured grant.

First claim

The invention claimed is:

1 . A method performed by a wireless device, wherein the wireless device is configured with a first configured grant associated with a first hybrid automatic repeat request (HARQ) pool and a second configured grant associated with a second HARQ pool, and wherein the first HARQ pool at least partially overlaps with the second HARQ pool, and wherein the second configured grant partially overlaps with the first configured grant, the method comprising:
for the first configured grant, selecting a first HARQ process from the first HARQ pool, for the second configured grant, selecting a second HARQ process from the second HARQ pool, wherein the first HARQ process selected for the first configured grant is different than the second HARQ process selected for the second configured grant; and transmitting on an uplink (UL) for the first configured grant or the second configured grant, and wherein when selecting the first HARQ process for the first configured grant and the second HARQ process for the second configured grant, the method further comprises:
determining whether there is a retransmission in an overlapping portion of the first HARQ pool and the second HARQ pool,
wherein, when there is the retransmission in the overlapping portion of the first HARQ pool and the second HARQ pool, a selected HARQ process is for the retransmission and is from the overlapping portion of the first HARQ pool and the second HARQ pool, and
wherein, when there is no retransmission in the overlapping portion of the first HARQ pool and the second HARQ pool, the first HARQ process for the first configured grant and the second HARQ process for the second configured grant are from a non-overlapping of the first HARQ pool and the second HARQ pool.

2 . The method of claim 1 , further comprising:
when determining there is the retransmission in the overlapping portion of the first HARQ pool and the second HARQ pool, the wireless device flushes a HARQ process with a lower priority retransmission data and uses the HARQ process for a new transmission of higher priority data.

3 . The method of claim 1 , wherein the first HARQ process is for retransmission of data according to the first configured grant, wherein the second HARQ process is for initial transmission of data according to the second configured grant, and the method further comprises:
prioritizing the retransmission of data according to the first configured grant over the initial transmission of data according to the second configured grant.

4 . The method of claim 1 , wherein the first HARQ process is for transmitting or retransmitting high priority logical channel data according to the first configured grant, wherein the second HARQ process is for transmitting or retransmitting low priority logical channel data according to the second configured grant, and the method further comprises:
prioritizing transmitting or retransmitting the high priority logical channel data according to the first configured grant over transmitting or retransmitting the low priority logical channel data according to the second configured grant.

5 . The method of claim 1 , wherein selecting the first HARQ process comprises selecting a first HARQ process identifier and wherein selecting the second HARQ process comprises selecting a second HARQ process identifier.

6 . A wireless device configured with a first configured grant associated with a first hybrid automatic repeat request (HARQ) pool and a second configured grant associated with a second HARQ pool, wherein the first HARQ pool at least partially overlaps with the second HARQ pool, wherein the second configured grant partially overlaps with the first configured grant, the wireless device comprising:
a memory storing instructions; and a processor operable to execute the instructions to cause the wireless device to:
for the first configured grant, select a first HARQ process from the first HARQ pool,
for the second configured grant, select a second HARQ process from the second HARQ pool, wherein the first HARQ process selected for the first configured grant is different than the second HARQ process selected for the second configured grant; and
transmit on an uplink (UL) for the first configured grant or the second configured grant, and
wherein when selecting the first HARQ process for the first configured grant and the second HARQ process for the second configured grant, the wireless device is operable to:
determine whether there is a retransmission in an overlapping portion of the first HARQ pool and the second HARQ pool,
wherein, when there is the retransmission in the overlapping portion of the first HARQ pool and the second HARQ pool, a selected HARQ process is for the retransmission and is from the overlapping portion of the first HARQ pool and the second HARQ pool, and
wherein, when there is no retransmission in the overlapping portion of the first HARQ pool and the second HARQ pool, the first HARQ process for the first configured grant and the second HARQ process for the second configured grant are from a non-overlapping of the first HARQ pool and the second HARQ pool.

7 . The wireless device of claim 6 , adapted to:
when determining there is the retransmission in the overlapping portion of the first HARQ pool and the second HARQ pool, flushing a HARQ process with a lower priority retransmission data and using the HARQ process for a new transmission of higher priority data.

8 . The wireless device of claim 6 , wherein the first HARQ process is for retransmission of data according to the first configured grant, wherein the second HARQ process is for initial transmission of data according to the second configured grant, and the wireless device is adapted to prioritize the retransmission of data according to the first configured grant over the initial transmission of data according to the second configured grant.

9 . The wireless device of claim 6 , wherein the first HARQ process is for transmitting or retransmitting high priority logical channel data according to the first configured grant, wherein the second HARQ process is for transmitting or retransmitting of low priority logical channel data according to the second configured grant, and the wireless device is adapted to prioritize transmitting or retransmitting the high priority logical channel data according to the first configured grant over transmitting or retransmitting the low priority logical channel data according to the second configured grant.

10 . The wireless device of claim 6 , wherein when selecting the first HARQ process the wireless device is adapted to select a first HARQ process identifier and wherein when selecting the second HARQ process the wireless device is adapted to select a second HARQ process identifier.

Assignees

• Ericsson Telefon Ab L M

Inventors

• Dudda Torsten
• Zou Zhenhua

Classifications

• H04L1/1887 Primary

  Scheduling and prioritising arrangements · CPC title

• H04L1/1864

  ARQ related signaling (H04L1/1607 takes precedence) · CPC title

• H04L1/1861

  Physical mapping arrangements (for ACK signaling see also H04L5/0053) · CPC title

• H04L1/1854

  Scheduling and prioritising arrangements · CPC title

• H04L1/1822

  involving configuration of automatic repeat request [ARQ] with parallel processes · CPC title