Method and apparatus for monitoring downlink control channel

• US 9,549,399 B2
• Filed: 05/27/2013
• Issued: 01/17/2017
• Est. Priority Date: 05/25/2012
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Kim, Hakseong, Seo, Hanbyul
• Primary Examiner(s): Elallam, Ahmed
• Application Number:
  US14/403,489
• Publication Number:
  US 20150117356A1
• Time in Patent Office: 1,331 Days
• US Class Current: 1/1
• CPC Class Codes: H04B 7/2656 for structure of frame, burst
• CPC Class Codes: H04J 11/0069 Cell search, i.e. determining cell identity [cell-ID] design of multiplexing codes H04J13/00; processing access restriction or access information H04W48/16; discovery of network devices for network data management H04W8/005; sounding signals for channel estimation H04L25/0226; structure of reference signals in multicarrier modulation systems H04L27/2613; frame, time or carrier synchronisation in multicarrier modulation systems H04L27/2655
• CPC Class Codes: 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
• CPC Class Codes: H04L 1/0072 Error control for data other than payload data, e.g. control data
• CPC Class Codes: H04L 5/00 Arrangements affording multiple use of the transmission path
• CPC Class Codes: H04L 5/0053 Allocation of signaling, i.e. of overhead other than pilot signals
• CPC Class Codes: H04W 72/23 in the downlink direction of a wireless link, i.e. towards a terminal

Abstract

Provided are a method and an apparatus for monitoring a control channel in a wireless communication system. A wireless device receives indicative information for indicating a search space for a downlink control channel through an indication channel, and monitors the downlink control channel in the search space. The search space is defined by one or more pairs of physical resource blocks (PRBs).

Claims

1. A method for monitoring a control channel in a wireless communication system, the method comprising:

receiving, by a wireless device, indication information for indicating a search space for a downlink control channel on an indication channel; and

monitoring, by the wireless device, the downlink control channel in the search space,

wherein the search space is defined by a physical resource block (PRB) pair,

wherein a resource region in which the indication channel is received and the search space are located in a same subframe,

wherein the PRB pair contains N enhanced control channel elements (ECCEs), where N>

=1,

wherein the downlink control channel is monitored in M ECCEs among the N ECCEs, where M<

N, and

wherein the indication channel is monitored in ECCEs among the N ECCEs other than the M ECCEs.

2. The method of claim 1, wherein the resource region in which the indication channel is received is fixed in the subframe.

3. The method of claim 1, wherein the resource region in which the indication channel is received partially or entirely overlaps with the search space.

4. The method of claim 1, wherein the indication information indicates any one of the number of PRB pairs and a position of the PRB pair.

5. A wireless device for monitoring a control channel in a wireless communication system, the wireless device comprising:

a radio frequency (RF) unit configured to transmit and receive a radio signal; and

a processor operatively coupled to the RF unit and configured to;

receive indication information for indicating a search space for a downlink control channel on an indication channel; and

monitor the downlink control channel in the search space,

wherein the search space is defined by a physical resource block (PRB) pair,

wherein a resource region in which the indication channel is received and the search space are located in a same subframe,

wherein the PRB pair contains N enhanced control channel elements (ECCEs), where N>

=1,

wherein the downlink control channel is monitored in M ECCEs among the N ECCEs, where M<

N, and

wherein the indication channel is monitored in ECCEs among the N ECCEs other than the M ECCEs.