METHOD FOR TRANSMITTING AND RECEIVING UPLINK SIGNAL BETWEEN TERMINAL AND BASE STATION IN WIRELESS COMMUNICATION SYSTEM FOR SUPPORTING UNLICENSED BAND, AND APPARATUS FOR SUPPORTING SAME

• US 20200137780A1
• Filed: 12/30/2019
• Published: 04/30/2020
• Est. Priority Date: 02/14/2018
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: KIM, Seonwook, PARK, Hanjun, PARK, Changhwan, AHN, Joonkui, YANG, Suckche
• Granted Patent: US 10,893,535 B2
• Time in Patent Office: Days
• CPC Class Codes: H04L 1/0026 Transmission of channel quality indication
• CPC Class Codes: H04L 1/0068 by puncturing
• CPC Class Codes: H04L 1/1893 Physical mapping arrangements physical resource mapping in general H04L5/00
• CPC Class Codes: H04L 27/0006 Assessment of spectral gaps suitable for allocating digitally modulated signals, e.g. for carrier allocation in cognitive radio for spectrum sharing between different networks H04W16/14
• CPC Class Codes: H04L 5/0007 the frequencies being orthogonal, e.g. OFDM(A), DMT
• CPC Class Codes: H04L 5/001 the frequencies being arranged in component carriers
• CPC Class Codes: H04L 5/0044 allocation of payload
• CPC Class Codes: H04L 5/0048 Allocation of pilot signals, i.e. of signals known to the receiver
• CPC Class Codes: H04L 5/0051 of dedicated pilots, i.e. pilots destined for a single user or terminal
• CPC Class Codes: H04L 5/0053 Allocation of signaling, i.e. of overhead other than pilot signals
• CPC Class Codes: H04L 5/0055 Physical resource allocation for ACK/NACK for physical mapping arrangements in ARQ protocols H04L1/1861
• CPC Class Codes: H04L 5/0082 at predetermined intervals
• CPC Class Codes: H04L 5/0091 Signaling for the administration of the divided path
• CPC Class Codes: H04L 5/0094 Indication of how sub-channels of the path are allocated
• CPC Class Codes: H04L 5/10 with dynamo-electric generation of carriers; with mechanical filters or demodulators
• CPC Class Codes: H04W 16/14 Spectrum sharing arrangements between different networks
• CPC Class Codes: H04W 72/0446 Resources in time domain, e.g. slots or frames
• CPC Class Codes: H04W 72/0453 Resources in frequency domain, e.g. a carrier in FDMA
• CPC Class Codes: H04W 72/1268 of uplink data flows
• CPC Class Codes: H04W 72/21 in the uplink direction of a wireless link, i.e. towards the network
• CPC Class Codes: H04W 80/08 : Upper layer protocols network arrangements or communication protocols for networked applications H04L67/00

Abstract

Disclosed are a method for transmitting and receiving an uplink signal between a terminal and a base station in a wireless communication system for supporting an unlicensed band, and an apparatus for supporting same. More particularly, the present invention includes a structure of interlace(s) scheduled for transmitting and receiving an uplink signal in an unlicensed band, and one embodiment in which the uplink signal is transmitted and received in the unlicensed band on the basis of same.

Claims

1. A method of transmitting an uplink signal by a user equipment (UE) in a wireless communication system supporting an unlicensed band, the method comprising:

mapping the uplink signal to at least one interlace among a plurality of interlaces,

wherein one interlace among the plurality of interlaces is composed of a plurality of resource blocks (RBs) having an identical RB interval between adjacent RBs in a unit of a first frequency bandwidth,

wherein, based on a configured subcarrier spacing, a number RBs included in at least one first interlace and a number of RBs included in at least one second interlace are differently configured, the at least one first interlace and the at least one second interlace being included in a number M of interlaces included in the unit of the first frequency bandwidth; and

transmitting the uplink signal via the at least one interlace in the unlicensed band,

wherein M is a natural number.

2. The method according to claim 1, wherein, based on the configured subcarrier spacing being 15 kHz, M is configured as 10, the at least one first interlace is configured to include 10 RBs, and the at least one second interlace is configured to include 11 RBs.

3. The method according to claim 1, wherein, based on the configured subcarrier spacing being 30 kHz, M is configured as 5, the at least one first interlace is configured to include 10 RBs, and the at least one second interlace is configured to include 11 RBs.

4. The method according to claim 1, wherein the unit of the first frequency bandwidth is 20 MHz.

5. The method according to claim 1, wherein, based on a full frequency band allotted to the user equipment being larger than the first frequency bandwidth, the plurality of interlaces are configured as a set of M interlaces configured in a unit of the first frequency bandwidth.

6. The method according to claim 1, wherein the subcarrier spacing is configured by higher-layer signaling.

7. The method according to claim 1, wherein the uplink signal includes a physical uplink shared channel (PUSCH) signal or a physical uplink control channel (PUCCH) signal.

8. The method according to claim 7, wherein the UE transmits the uplink signal in the at least one interlace in the unlicensed band by using a channel access procedure (CAP).

9. The method according to claim 8, wherein the uplink signal is transmitted by puncturing one or more symbols of the uplink signal based on the CAP.

10. The method according to claim 9, wherein when the PUCCH signal out of the uplink signal is punctured based on the CAP, the PUCCH signal is transmitted in a remaining uplink signal.

11. The method according to claim 8, wherein the uplink signal is transmitted after one or more symbols from a scheduled timing.

12. The method according to claim 7, wherein the PUCCH signal is transmitted across 1 or 2 symbols or across 4 to 14 symbols, based on a configured PUCCH format.

13. The method according to claim 7, wherein the PUCCH signal is transmitted including the same uplink control information (UCI) in each RB included in the at least one interlace.

14. The method according to claim 7, wherein the PUCCH signal is transmitted including different UCI in each RB included in the at least one interlace.

15. The method according to claim 1, wherein one RB includes 12 subcarriers in a frequency domain.

16. A communication device for transmitting an uplink signal to a base station (BS) in a wireless communication system supporting an unlicensed band, the communication device comprising:

a memory; and

a processor operatively coupled to the memory,

wherein the processor is configured to;

map the uplink signal to at least one interlace among a plurality of interlaces,

wherein one interlace among the plurality of interlaces is composed of a plurality of resource blocks (RBs) having an identical RB interval between adjacent RBs in a unit of a first frequency bandwidth,

wherein, based on a configured subcarrier spacing, a number RBs included in at least one first interlace and a number of RBs included in at least one second interlace are differently configured, the at least one first interlace and the at least one second interlace being included in a number M of interlaces included in the unit of the first frequency bandwidth; and

transmit the uplink signal via the at least one interlace in the unlicensed band,

wherein M is a natural number.

18. The communication device of claim 16, wherein the communication device communicates with at least one of a mobile terminal, a network and an autonomous vehicle.

17. A communication device for receiving an uplink signal from a user equipment (UE) in a wireless communication system supporting an unlicensed band, the communication device comprising:

a memory; and

a processor operatively coupled to the memory,

wherein the processor is configured to receive the uplink signal in at least one interlace among a plurality of interlaces, wherein one interlace among the plurality of interlaces is composed of a plurality of resource blocks (RBs) having an identical RB interval between adjacent RBs in a unit of a first frequency bandwidth,

wherein, based on a configured subcarrier spacing, a number RBs included in at least one first interlace and a number of RBs included in at least one second interlace are differently configured, the at least one first interlace and the at least one second interlace being included in a number M of interlaces included in the unit of the first frequency bandwidth,

wherein M is a natural number.