Method and device for transmitting and receiving wireless signal in wireless communication system

• US 10,342,002 B2
• Filed: 09/16/2015
• Issued: 07/02/2019
• Est. Priority Date: 09/16/2014
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Yang, Suckchel, Ahn, Joonkui, Seo, Hanbyul
• Primary Examiner(s): Atkins, George C
• Application Number:
  US15/504,954
• Publication Number:
  US 20170280425A1
• Time in Patent Office: 1,385 Days
• Field of Search: None
• CPC Class Codes: H04L 5/001 the frequencies being arranged in component carriers
• CPC Class Codes: H04L 5/0053 Allocation of signaling, i.e. of overhead other than pilot signals
• CPC Class Codes: H04W 16/14 Spectrum sharing arrangements between different networks
• CPC Class Codes: H04W 72/02 Selection of wireless resources by user or terminal
• CPC Class Codes: H04W 72/23 in the downlink direction of a wireless link, i.e. towards a terminal

Abstract

The resent invention relates to a wireless communication system, and particularly to a method and device for same, the method including the steps of: receiving, from a base station, L1 information about M number of UCells (M≤N) on which downlink resources are temporarily configured, wherein M number of UCells (M≤N) are a subset of N number of UCells; selectively aggregating K number of UCells (K<M) from among N number of UCells depending on a terminal'"'"'s cell aggregation capability; and communicating with the base station by using the aggregated K number of UCells.

Claims

1. A method of performing communication by a user equipment (UE) in a wireless communication system, the method comprising:

receiving first layer 1 (L1) information related to M (M≤

N) number of unlicensed band cells (UCells) to which a downlink resource is temporarily set among N number of UCells from an eNB;

receiving second L1 information related to a maximum number of K of UCells that the UE is able to aggregate;

aggregating all of the M number of UCells, when K is no less than M;

aggregating K number of UCells selected by the UE from the N number of UCells based on a predetermined rule, without an indication from the eNB related to the selected K number of UCells, when K is less than M; and

performing communication with the eNB using the aggregated UCells.

2. The method of claim 1, wherein the K number of UCells are selected from the M number of UCells as follows:

a UCell having a lower cell index is preferentially selected,

a UCell having a wider system bandwidth is preferentially selected, and

a UCell having a longer downlink resource is preferentially selected.

3. The method of claim 1, wherein the first and second L1 information are received on a PDCCH (physical downlink control channel).

4. The method of claim 3, wherein the second L1 information is received on an LCell (licensed band cell), and

wherein the wireless communication system corresponds to a 3GPP (3rd generation partnership project) wireless communication system.

5. A user equipment (UE) configured to perform communication in a wireless communication system, the UE comprising:

a transceiver; and

a processor configured to;

receive first layer 1 (L1) information related to M (M≤

N) number of unlicensed band cells (UCells) to which a downlink resource is temporarily set among N number of UCells from an eNB,

receive second L1 information related to a maximum number K of UCells that the UE is able to aggregate,

aggregate all of the M number of UCells, when K is no less than M,

aggregate K number of UCells selected by the UE from the N number of UCells based on a predetermined rule, without an indication from the eNB related to the selected K number of UCells, when K is less than M, and

perform communication with the eNB using the aggregated UCells.

6. The user equipment of claim 5, wherein the K number of UCells are selected from the M number of UCells as follows:

a UCell having a lower cell index is preferentially selected,

a UCell having a wider system bandwidth is preferentially selected, and

a UCell having a longer downlink resource is preferentially selected.

7. The user equipment of claim 5, wherein the first and second L1 information are received on a PDCCH (physical downlink control channel).

8. The user equipment of claim 7, wherein the second L1 information is received on an LCell (licensed band cell), and

wherein the wireless communication system corresponds to a 3GPP (3rd generation partnership project) wireless communication system.