# US 12,004,152 B2 · Method and system for transmitting or receiving feedback in wireless communication system supporting NB-IoT

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- Number: US 12,004,152 B2
- Document ID: US12004152B2
- Status: Granted
- Kind: B2
- Application number: 17/279,936
- Filed: 2019-09-27
- Published: 2021-11-11
- Granted: 2024-06-04
- Earliest claimed: 2018-09-27
- Assignees: LG Electronics Inc.
- Applicants: LG Electronics Inc.
- Inventors: Seokmin Shin; Changhwan Park; Joonkui Ahn; Seunggye Hwang
- Web page: https://patentgrep.com/patent/US12004152B2

## CPC

- H04L 5/0044: {Allocation of payload; Allocation of data channels, e.g. PDSCH or PUSCH}
- H04W 72/1268: of uplink data flows
- H04L 1/0031: {Multiple signaling transmission (H04L1/1664, F15 take precedence)}
- H04L 1/1812: Hybrid protocols; Hybrid automatic repeat request [HARQ]
- H04L 1/1829: Arrangements specially adapted for the receiver end
- H04L 1/1896: {ARQ related signaling}
- H04L 5/0053: {Allocation of signalling, i.e. of overhead other than pilot signals}
- H04L 5/0091: {Signalling for the administration of the divided path, e.g. signalling of configuration information}
- H04W 52/262: {taking into account adaptive modulation and coding [AMC] scheme}
- H04W 52/362: {Aspects of the step size}
- H04W 52/365: {Power headroom reporting}
- H04W 72/0446: Resources in time domain, e.g. slots or frames
- H04W 72/0453: Resources in frequency domain, e.g. a carrier in FDMA
- H04W 72/23: in the downlink direction of a wireless link, i.e. towards a terminal
- H04L 5/0007: {the frequencies being orthogonal, e.g. OFDM(A) or DMT}
- H04L 5/0012: {Hopping in multicarrier systems}
- H04L 5/0048: {Allocation of pilot signals, i.e. of signals known to the receiver (allocation of control signalling H04L5/0053; use of control signalling H04L5/0091)}
- H04L 5/0055: {Physical resource allocation for ACK/NACK (for physical mapping arrangements in ARQ protocols H04L1/1861)}
- Y02D 30/70: in wireless communication networks
- 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)
- Y02D: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE

## Abstract

Provided is a method for receiving, by a user equipment (UE), a feedback from a base station in a wireless communication system supporting narrowband (NB)-internet of things (IoT). Specifically, the UE receives, from the base station, a preconfigured uplink (UL) resource (PUR) configuration via RRC signalling, transmits, to the base station, uplink data on the PUR when the UE is in an idle mode, and receive, from the base station, the feedback for the uplink data. The feedback is configured to be received on an NPDCCH after a specific time has passed from the PUR transmission.

## Claims

### Claim 1

A user equipment (UE) receiving a feedback from a base station in a wireless communication system supporting narrowband (NB)-internet of things (IoT), the UE comprising:
a radio frequency (RF) module configured to transmit and receive a radio signal; and
a processor functionally connected to the RF module,
wherein the processor is configured to:
receive, from the base station, a preconfigured uplink (UL) resource (PUR) configuration via RRC signalling;
when the UE is in an idle mode, transmit, to the base station, uplink data on the PUR; and
receive, from the base station, a feedback for the uplink data,
wherein the feedback is configured to be received on an NPDCCH after a specific time has passed from the PUR transmission.

### Claim 2 (depends on 1)

The UE of claim 1, wherein the specific time is a specific number of at least one subframe.

### Claim 3 (depends on 2)

The UE of claim 2, wherein the specific number is four.

### Claim 4 (depends on 1)

The UE of claim 1, wherein the processor is further configured to:
monitor a feedback window on a search space for transmitting the feedback; and
stop the monitoring based on whether or not DCI including the feedback is received on the feedback window.

### Claim 5 (depends on 1)

The UE of claim 1, wherein the processor is further configured to:
receive, from the base station, a response on other second field excluding a first field required to indicate a PUR retransmission from a plurality of fields included in a UL grant.

### Claim 6

A base station transmitting a feedback to a user equipment (UE) in a wireless communication system supporting narrowband (NB)-internet of things (IoT), the base station comprising:
a radio frequency (RF) module configured to transmit and receive a radio signal; and
a processor functionally connected to the RF module,
wherein the processor is configured to:
transmit, to the UE, a preconfigured uplink (UL) resource (PUR) configuration via RRC signalling;
when the UE is in an idle mode, receive, from the UE, uplink data on the PUR; and
transmit, to the UE, a feedback for the uplink data,
wherein the feedback is configured to be transmitted on an NPDCCH after a specific time has passed from the PUR reception.

### Claim 7 (depends on 6)

The base station of claim 6, wherein the specific time is a specific number of at least one subframe.

### Claim 8 (depends on 7)

The base station of claim 7, wherein the specific number is four.

### Claim 9 (depends on 6)

The base station of claim 6, wherein the processor is further configured to:
monitor a feedback window on a search space for transmitting the feedback; and
indicate, to the UE, stopping the monitoring based on whether or not DCI including the feedback is received on the feedback window.

### Claim 10 (depends on 6)

The base station of claim 6, wherein the processor is further configured to:
transmit, to the UE, a response on other second field excluding a first field required to indicate a PUR retransmission from a plurality of fields included in a UL grant.

### Claim 11

A method for receiving, by a user equipment (UE), a feedback from a base station in a wireless communication system supporting narrowband (NB)-internet of things (IoT), the method comprising:
receiving, from the base station, a preconfigured uplink (UL) resource (PUR) configuration via RRC signalling;
when the UE is in an idle mode, transmitting, to the base station, uplink data on the PUR; and
receiving, from the base station, a feedback for the uplink data,
wherein the feedback is configured to be received on an NPDCCH after a specific time has passed from the PUR transmission.

### Claim 12 (depends on 11)

The method of claim 11, wherein the specific time is a specific number of at least one subframe.

### Claim 13 (depends on 12)

The method of claim 12, wherein the specific number is four.

### Claim 14 (depends on 11)

The method of claim 11, further comprising:
monitoring a feedback window on a search space for transmitting the feedback; and
stopping the monitoring based on whether or not DCI including the feedback is received on the feedback window.

### Claim 15 (depends on 11)

The method of claim 11, further comprising:
configuring to receive, from the base station, a response on other second field excluding a first field required to indicate a PUR retransmission from a plurality of fields included in a UL grant.

### Claim 16

A method for transmitting, by a base station, a feedback to a user equipment (UE) in a wireless communication system supporting narrowband (NB)-internet of things (IoT), the method comprising:
transmitting, to the UE, a preconfigured uplink (UL) resource (PUR) configuration via RRC signalling;
when the UE is in an idle mode, receiving, from the UE, uplink data on the PUR; and
transmitting, to the UE, a feedback for the uplink data,
wherein the feedback is configured to be transmitted on an NPDCCH after a specific time has passed from the PUR reception.

### Claim 17 (depends on 16)

The method of claim 16, wherein the specific time is a specific number of at least one subframe.

### Claim 18 (depends on 17)

The method of claim 17, wherein the specific number is four.

### Claim 19 (depends on 16)

The method of claim 16, further comprising:
monitoring a feedback window on a search space for transmitting the feedback; and
indicating, to the UE, stopping the monitoring based on whether or not DCI including the feedback is received on the feedback window.

### Claim 20 (depends on 16)

The method of claim 16, further comprising:
configuring to transmit, to the UE, a response on other second field excluding a first field required to indicate a PUR retransmission from a plurality of fields included in a UL grant.