# US 12,009,928 B2 · URLLC in unlicensed bands

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- Number: US 12,009,928 B2
- Document ID: US12009928B2
- Status: Granted
- Kind: B2
- Application number: 18/121,296
- Filed: 2023-03-14
- Published: 2023-07-27
- Granted: 2024-06-11
- Earliest claimed: 2020-01-15
- Assignees: PanPsy Technologies, LLC
- Applicants: PanPsy Technologies, LLC
- Inventors: Alireza Babaei
- Web page: https://patentgrep.com/patent/US12009928B2

## CPC

- H04L 1/08: by repeating transmission, e.g. Verdan system {(H04L1/1858 and H04L1/189 take precedence)}
- H04L 1/1812: Hybrid protocols; Hybrid automatic repeat request [HARQ]
- H04L 1/1854: {Scheduling and prioritising arrangements}
- H04L 1/1861: {Physical mapping arrangements (for ACK signaling see also H04L5/0053)}
- H04L 1/1874: {Buffer management}
- H04W 72/23: in the downlink direction of a wireless link, i.e. towards a terminal
- H04W 72/56: based on priority criteria
- H04W 74/0808: using carrier sensing, e.g. carrier sense multiple access [CSMA]
- H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M)
- H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72)

## Abstract

A wireless device may receive a first TB associated with a first priority and a second TB associated with a second priority. The wireless device may transmit, via an unlicensed cell and based on an LBT procedure, a first feedback associated with the first TB and a second feedback associated with the second TB. The LBT procedure may be based on an LBT parameter that is based on at least one of the first priority and the second priority.

## Claims

### Claim 1

A method comprising:
receiving, by a wireless device, a first transport block (TB) associated with a first priority and a second TB associated with a second priority;
transmitting, via an unlicensed cell and based on a listen-before-talk (LBT) procedure, a first feedback associated with the first TB and a second feedback associated with the second TB;
wherein:
the LBT procedure is based on an LBT parameter; and
the LBT parameter is based on the first priority and the second priority.

### Claim 2 (depends on 1)

The method of claim 1, wherein the LBT parameter indicates one of a contention window size and a channel access priority class.

### Claim 3 (depends on 1)

The method of claim 1, wherein the transmitting is based on the LBT procedure indicating a clear channel.

### Claim 4 (depends on 1)

The method of claim 1, further comprising receiving a first downlink control information (DCI) and a second DCI, wherein:
the receiving the first TB is based on the first DCI; and
the receiving the second TB is based on the second DCI.

### Claim 5 (depends on 4)

The method of claim 4, wherein:
the first DCI comprises a first field and the second DCI comprises a second field; and
a first value of the first field indicates the first priority and a second value of the second field indicates the second priority.

### Claim 6 (depends on 1)

The method of claim 1, wherein:
a hybrid automatic repeat request (HARQ) feedback codebook comprises the first feedback and the second feedback; and
the transmitting the first feedback and the second feedback is based on transmitting the HARQ feedback codebook.

### Claim 7 (depends on 1)

The method of claim 1, wherein:
the first priority is associated with a first traffic type or a first service type; and
the second priority is associated with a second traffic type or a second service type.

### Claim 8

A wireless device comprising:
one or more processors; and
memory storing instructions that, when executed by the one or more processors, cause the wireless device to:
receive a first transport block (TB) associated with a first priority and a second TB associated with a second priority;
transmit, via an unlicensed cell and based on a listen-before-talk (LBT) procedure, a first feedback associated with the first TB and a second feedback associated with the second TB;
wherein:
the LBT procedure is based on an LBT parameter; and
the LBT parameter is based on the first priority and the second priority.

### Claim 9 (depends on 8)

The wireless device of claim 8, wherein the LBT parameter indicates one of a contention window size and a channel access priority class.

### Claim 10 (depends on 8)

The wireless device of claim 8, wherein the transmitting is based on the LBT procedure indicating a clear channel.

### Claim 11 (depends on 8)

The wireless device of claim 8, wherein the instructions, when executed by the one or more processors, further cause the wireless device to receive a first downlink control information (DCI) and a second DCI, wherein:
receiving the first TB is based on the first DCI; and
receiving the second TB is based on the second DCI.

### Claim 12 (depends on 11)

The wireless device of claim 11, wherein:
the first DCI comprises a first field and the second DCI comprises a second field; and
a first value of the first field indicates the first priority and a second value of the second field indicates the second priority.

### Claim 13 (depends on 8)

The wireless device of claim 8, wherein:
a hybrid automatic repeat request (HARQ) feedback codebook comprises the first feedback and the second feedback; and
the transmitting the first feedback and the second feedback is based on transmitting the HARQ feedback codebook.

### Claim 14 (depends on 8)

The wireless device of claim 8, wherein:
the first priority is associated with a first traffic type or a first service type; and
the second priority is associated with a second traffic type or a second service type.

### Claim 15

A system comprising:
a base station; and
a wireless device comprising: one or more processors; and memory storing instructions that, when executed by the one or more processors, cause the wireless device to: receive, from the base station, a first transport block (TB) associated with a first priority and a second TB associated with a second priority; transmit, via an unlicensed cell and based on a listen-before-talk (LBT) procedure, a first feedback associated with the first TB and a second feedback associated with the second TB;
wherein: the LBT procedure is based on an LBT parameter; and the LBT parameter is based on the first priority and the second priority.

### Claim 16 (depends on 15)

The system of claim 15, wherein the LBT parameter indicates one of a contention window size and a channel access priority class.

### Claim 17 (depends on 15)

The system of claim 15, wherein the transmitting is based on the LBT procedure indicating a clear channel.

### Claim 18 (depends on 15)

The system of claim 15, wherein the instructions, when executed by the one or more processors, further cause the wireless device to receive a first downlink control information (DCI) and a second DCI, wherein:
receiving the first TB is based on the first DCI; and
receiving the second TB is based on the second DCI.

### Claim 19 (depends on 18)

The system of claim 18, wherein:
the first DCI comprises a first field and the second DCI comprises a second field; and
a first value of the first field indicates the first priority and a second value of the second field indicates the second priority.

### Claim 20 (depends on 15)

The system of claim 15, wherein:
the first priority is associated with a first traffic type or a first service type; and
the second priority is associated with a second traffic type or a second service type.