UCI on grant-free PUSCH

Patent metadata

Field	Value
Publication number	US-12418917-B2
Application number	US-202418608310-A
Country	US
Kind code	B2
Filing date	Mar 18, 2024
Priority date	Oct 11, 2017
Publication date	Sep 16, 2025
Grant date	Sep 16, 2025

Abstract

According to certain embodiments, a method for use in a wireless device for transmitting uplink control information (UCI) on grant-free resources comprises reserving a subset of time/frequency resources of a grant-free uplink channel for transmitting UCI, and upon determining the wireless device has UCI to transmit on the grant-free uplink channel, transmitting the UCI to a network node in the reserved subset of time/frequency resources.

First claim

The invention claimed is:

1. A method in a wireless device for transmitting on grant-free resources, the grant-free resources pertaining to Type 1 and Type 2 Uplink (UL) transmission without grant in New Radio (NR), the method comprising:
receiving uplink control information (UCI) configuration information from a network node, the UCI configuration information including at least an indication of a subset of time/frequency resources of a grant-free uplink channel to reserve to transmit UCI;
reserving the subset of time/frequency resources of a grant-free uplink channel for transmitting UCI; and
when the wireless device does not have UCI to transmit on the grant-free uplink channel, transmitting user data in the reserved subset of time/frequency resources.

2. The method of claim 1 , when the wireless device has UCI to transmit on the grant-free uplink channel, transmitting the UCI to a network node in the reserved subset of time/frequency resources.

3. The method of claim 1 , wherein receiving the UCI configuration information comprises at least one of receiving radio resource control (RRC) signaling and receiving layer one signaling.

4. The method of claim 1 , further comprising indicating whether a subset of time/frequency resources of a grant-free uplink channel are reserved for transmitting UCI by transmitting a first demodulation reference signal (DMRS) to indicate the grant-free uplink channel includes a subset of time/frequency resources reserved for UCI and transmitting a second DMRS to indicate the grant-free uplink channel does not include a subset of time/frequency resources reserved for UCI.

5. The method of claim 1 , further comprising indicating whether a subset of time/frequency resources of a grant-free uplink channel are reserved for transmitting UCI by selecting a first pool of resources to indicate the grant-free uplink channel includes a subset of time/frequency resources reserved for UCI and selecting a second pool of resources to indicate the grant-free uplink channel does not include a subset of time/frequency resources reserved for UCI.

6. A wireless device operable to transmit on grant-free resources, the grant-free resources pertaining to Type 1 and Type 2 Uplink (UL) transmission without grant in New Radio (NR), the wireless device comprising processing circuitry operable to:
receive uplink control information (UCI) configuration information from a network node, the UCI configuration information including at least an indication of a subset of time/frequency resources of a grant-free uplink channel to reserve to transmit UCI;
reserve the subset of time/frequency resources of a grant-free uplink channel for transmitting UCI; and
when the wireless device does not have UCI to transmit on the grant-free uplink channel, transmit user data in the reserved subset of time/frequency resources.

7. The wireless device of claim 6 , the processing circuitry further operable to, when the wireless device has UCI to transmit on the grant-free uplink channel, transmit the UCI to a network node in the reserved subset of time/frequency resources.

8. The wireless device of claim 6 , wherein the processing circuitry is operable to receive the UCI configuration information by receiving at least one of radio resource control (RRC) signaling and layer one signaling.

9. The wireless device of claim 6 , the processing circuitry further operable to indicate whether a subset of time/frequency resources of a grant-free uplink channel are reserved for transmitting UCI by transmitting a first demodulation reference signal (DMRS) to indicate the grant-free uplink channel includes a subset of time/frequency resources reserved for UCI and transmitting a second DMRS to indicate the grant-free uplink channel does not include a subset of time/frequency resources reserved for UCI.

Assignees

• Ericsson Telefon Ab L M

Inventors

• Baldemair Robert
• Behravan Ali
• Falahati Sorour
• Larsson Daniel
• Parkvall Stefan

Classifications

• H04L5/0048

  Allocation of pilot signals, i.e. of signals known to the receiver (allocation of control signalling H04L5/0053; use of control signalling H04L5/0091) · CPC title

• H04L5/0005

  Time-frequency · CPC title

• H04W72/21 Primary

  in the uplink direction of a wireless link, i.e. towards the network · CPC title