# US 12,010,689 B2 · Method and system for transmitting and receiving data in narrow band wireless communication system

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- Number: US 12,010,689 B2
- Document ID: US12010689B2
- Status: Granted
- Kind: B2
- Application number: 17/280,801
- Filed: 2019-09-27
- Published: 2022-01-13
- Granted: 2024-06-11
- 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/US12010689B2

## CPC

- H04L 5/0055: {Physical resource allocation for ACK/NACK (for physical mapping arrangements in ARQ protocols H04L1/1861)}
- H04W 72/21: in the uplink direction of a wireless link, i.e. towards the network
- H04L 1/08: by repeating transmission, e.g. Verdan system {(H04L1/1858 and H04L1/189 take precedence)}
- H04L 1/1819: {with retransmission of additional or different redundancy}
- H04L 1/1861: {Physical mapping arrangements (for ACK signaling see also H04L5/0053)}
- H04L 1/1864: {ARQ related signaling (H04L1/1607 takes precedence)}
- H04L 1/1896: {ARQ related signaling}
- H04L 5/0007: {the frequencies being orthogonal, e.g. OFDM(A) or DMT}
- H04L 5/0044: {Allocation of payload; Allocation of data channels, e.g. PDSCH or PUSCH}
- H04L 5/0053: {Allocation of signalling, i.e. of overhead other than pilot signals}
- H04L 5/0094: {Indication of how sub-channels of the path are allocated}
- H04W 24/08: Testing, {supervising or monitoring} using real traffic
- 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 72/23: in the downlink direction of a wireless link, i.e. towards a terminal
- H04W 72/53: based on regulatory allocation policies
- H04W 74/0841: {with collision treatment}
- H04L 1/0025: {Transmission of mode-switching indication}
- H04L 1/1822: involving configuration of automatic repeat request [ARQ] with parallel processes
- 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 5/0051: {of dedicated pilots, i.e. pilots destined for a single user or terminal}
- H04L 27/2602: {Signal structure}
- 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

Disclosed is a method for transmitting and receiving data between a user equipment (UE) and a base station in a narrowband wireless communication system. Specifically, the method includes transmitting, to the UE, a preconfigured uplink (UL) resource (PUR) configuration via RRC signalling, receiving, from the UE, uplink data on the PUR when the UE is in an idle mode, 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.

## Claims

### Claim 1

A method for transmitting, by a base station, a feedback in a narrowband (NB)-Internet of Things (IoT) system, the method comprising:
transmitting, to a user equipment (UE), a preconfigured uplink (UL) resource (PUR) configuration via radio resource control (RRC) signaling;
receiving, from the UE in an idle mode, uplink data on the PUR ending in subframe n; and
transmitting, to the UE, Downlink Control Information (DCI) related to a feedback for the uplink data through a narrowband physical downlink control channel (DCCH) in a feedback window whose a starting subframe is a Downlink (DL) subframe after 4 DL subframes from the subframe n, such that monitoring of the UE for the feedback window is stopped after the transmission of the DCI,
wherein a first state of a specific field included in the DCI is related to the feedback, and a second state of the specific field is related to a fallback indication for the UE.

### Claim 2 (depends on 1)

The method of claim 1, wherein the DCI related to the feedback for the uplink data is transmitted on a carrier based on the PUR configuration.

### Claim 3

A method for receiving, by a user equipment (UE), a feedback in a narrowband (NB)-Internet of Things (IoT) system, the method comprising:
receiving, from a base station, a preconfigured uplink (UL) resource (PUR) configuration via radio resource control (RRC) signaling;
while in an idle mode, transmitting, to the base station, uplink data on the PUR ending in subframe n; and
receiving, from the base station, Control Information (DCI) related to a feedback for the uplink data through a narrowband physical downlink control channel (NPDCCH) in a feedback window whose a starting subframe is a Downlink (DL) subframe after 4 DL subframes from the subframe n, such that monitoring of the UE for the feedback window is stopped after the transmission of the DCI,
wherein a first state of a specific field included in the DCI is related to the feedback, and a second state of the specific field is related to a fallback indication for the UE.

### Claim 4 (depends on 3)

The method of claim 3, wherein the DCI related to the feedback for the uplink data is transmitted on a carrier based on the PUR configuration.

### Claim 5

A base station transmitting a feedback in a narrowband (NB)-Internet of Things (IoT) system, 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 a user equipment (UE) a preconfigured uplink (UL) resource (PUR) configuration via radio resource control (RRC) signaling;
receive, from the UE in an idle mode, uplink data on the PUR ending in subframe n; and
transmit, to the UE, Downlink Control Information (DCI) related to a feedback for the uplink data through a narrowband physical downlink control channel (NPDCCH) in a feedback window whose a starting subframe is a Downlink (DL) subframe after 4 DL subframes from the subframe n, such that monitoring of the UE for the feedback window is stopped after the transmission of the DCI,
wherein a first state of a specific field included in the DCI is related to the feedback, and a second state of the specific field is related to a fallback indication for the UE.

### Claim 6 (depends on 5)

The base station of claim 5, wherein the DCI related to the feedback for the uplink data is transmitted on a carrier based on the PUR configuration.

### Claim 7

A user equipment (UE) receiving a feedback in a narrowband (NB)-Internet of Things (IoT) system, 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 a base station, a preconfigured uplink (UL) resource (PUR) configuration via radio resource control (RRC) signaling;
while in an idle mode, transmit, to the base station, uplink data on the PUR ending in subframe n; and
receive, from the base station, Downlink Control Information (DCI) related to a feedback for the uplink data through a narrowband physical downlink control channel (NPDCCH) in a feedback window whose a starting subframe is a Downlink (DL) subframe after 4 DL subframes from the subframe n, such that monitoring of the UE for the feedback window is stopped after the transmission of the DCI,
wherein a first state of a specific field included in the DCI is related to the feedback, and a second state of the specific field is related to a fallback indication for the UE.

### Claim 8 (depends on 7)

The UE of claim 7, wherein the DCI related to the feedback for the uplink data is transmitted on a carrier based on the PUR configuration.