# US 2014/0153506 A1 · Apparatus and method of avoiding control channel blocking

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 2014/0153506 A1
- Document ID: US20140153506A1
- Status: Published application
- Kind: A1
- Application number: 14/081,384
- Filed: 2013-11-15
- Published: 2014-06-05
- Earliest claimed: 2009-12-17
- Assignees: LG Electronics Inc.
- Applicants: LG Electronics Inc.
- Inventors: Suck Chel YANG; Min Gyu KIM; Joon Kui AHN; Dong Youn SEO
- Web page: https://patentgrep.com/patent/US20140153506A1

## CPC

- H04W 72/23: in the downlink direction of a wireless link, i.e. towards a terminal
- H04L 1/0046: {Code rate detection or code type detection (H04L1/0038 takes precedence; detection of the data rate H04L25/0262; for packet format H04L1/0091)}
- H04L 1/0067: {Rate matching (H04L1/0013 and H04L1/08 take precedence)}
- H04L 5/001: {the frequencies being arranged in component carriers}
- H04L 5/0053: {Allocation of signalling, i.e. of overhead other than pilot signals}
- H04L 5/0073: {Allocation arrangements that take into account other cell interferences}
- H04L 5/0094: {Indication of how sub-channels of the path are allocated}
- H04W 72/20: Control channels or signalling for resource management
- H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72)
- H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M)

## Abstract

The present application is directed to a wireless communication system and, more particularly, a method of processing a control channel at a user equipment in a wireless communication system using multiple carriers. The method comprises receiving a plurality of search spaces, wherein each search space comprises a plurality of control channel candidates and each search space is corresponding to respective carrier. The method also includes monitoring the control channel candidates for the control channel.

## Claims

### Claim 1

A method of receiving a control channel at a user equipment in a wireless communication system using multiple component carriers, the method comprising:
receiving a plurality of search spaces, wherein each search space comprises a plurality of control channel candidates and each search space is corresponding to a respective carrier; and
monitoring the control channel candidates for the control channel, wherein each of the control channel candidates has a downlink control information (DCI) format size, includes a carrier indicator field (CIF), and is cyclic redundancy check (CRC) scrambled by a radio network temporary identifier (RNTI),
wherein first control channel candidates of the control channel candidates have CIF values for a same DCI format size.