METHOD AND APPARATUS FOR TRANSMITTING AND RECEIVING CONTROL INFORMATION IN A WIRELESS COMMUNICATION SYSTEM

• US 20130100901A1
• Filed: 10/22/2012
• Published: 04/25/2013
• Est. Priority Date: 10/20/2011
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: SHAN, Cheng, KIM, Youn-Sun
• Granted Patent: US 8,913,576 B2
• Time in Patent Office: Days
• US Class Current: 370/329
• CPC Class Codes: H04L 27/26 Systems using multi-frequency codes H04L27/32 takes precedence
• 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: H04W 72/00 Local resource management
• CPC Class Codes: H04W 72/04 Wireless resource allocation
• CPC Class Codes: H04W 72/20 Control channels or signalling for resource management

Abstract

A method and an apparatus are provided for transmitting and receiving control information in wireless communication system. An eNB generates control information, and transmits the control information using at least one enhanced Control Channel Element (eCCE) and at least one antenna port. The at least one antenna port is determined according to at least one of a starting index of the at least one eCCE and an aggregation level of the at least one eCCE.

Claims

1. A method for transmitting control information to a User Equipment (UE) in a wireless communication system in which multiple antenna ports are defined, the method comprising:

generating the control information; and

transmitting the control information using at least one enhanced Control Channel Element (eCCE) and at least one antenna port,

wherein the at least one antenna port is determined according to at least one of a starting index of the at least one eCCE and an aggregation level of the at least one eCCE.

2. The method of claim 1, wherein the starting index includes one of:

a starting index of the at least one eCCE within all resources allocated for potential control information transmission; and

a starting index of the at least one eCCE within a resource block.

3. The method of claim 1, wherein the at least one antenna port is represented by reference signals transmitted to the UE.

4. The method of claim 1, wherein the at least one antenna port is determined further considering one of:

a maximum eCCE index of at least one eCCE used for the transmission of the control information, within all resources allocated for potential control information transmission;

a minimum eCCE index of the at least one eCCE used for the transmission of the control information, within all the resources allocated for potential control information transmission;

a maximum eCCE index of the at least one eCCE used for the transmission of the control information, within a resource block;

a minimum eCCE index of the at least one eCCE used for the transmission of the said control information, within a resource block; and

a number of the at least one eCCE used for the transmission of the control information.

5. The method of claim 1, wherein the at least one antenna port is determined further considering one of:

a number of transmission layers for the control information;

an index of a current subframe; and

an IDentifier (ID) of the UE.

6. The method of claim 1, wherein the at least one eCCE is a portion of a resource block including a plurality of eCCEs.

7. A method for receiving control information from an enhanced Node B (eNB) in a wireless communication system in which multiple antenna ports are defined, the method comprising:

receiving the control information transmitted using at least one enhanced Control Channel Element (eCCE) and at least one antenna port; and

decoding the control information,

wherein the at least one antenna port is determined according to at least one of a starting index of the at least one eCCE and an aggregation level of the at least one eCCE.

8. An apparatus of an enhanced Node B (eNB) for transmitting control information to a User Equipment (UE) in a wireless communication system in which multiple antenna ports are defined, the apparatus comprising:

a controller that generates the control information; and

a transmitter that transmits the control information using at least one enhanced Control Channel Element (eCCE) and at least one antenna port,

wherein the at least one antenna port is determined according to at least one of a starting index of the at least one eCCE and an aggregation level of the at least one eCCE.

9. An apparatus of a User Equipment (UE) for receiving control information from an enhanced Node B (eNB) in a wireless communication system in which multiple antenna ports are defined, the apparatus comprising:

a receiver that receives the control information transmitted using at least one enhanced Control Channel Element (eCCE) and at least one antenna port; and

a controller that decodes the control information,

wherein the at least one antenna port is determined according to at least one of a starting index of the at least one eCCE and an aggregation level of the at least one eCCE.