METHOD OF USER EQUIPMENT MONITORING CONTROL INFORMATION IN A MULTIPLE NODE SYSTEM AND USER EQUIPMENT USING THE METHOD

• US 20140133346A1
• Filed: 07/12/2012
• Published: 05/15/2014
• Est. Priority Date: 07/12/2011
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Kang, Ji Won, Chun, Jin Young, Kim, Ki Tae, Kim, Su Nam, Ihm, Bin Chul, Park, Sung Ho
• Granted Patent: US 9,755,804 B2
• Time in Patent Office: Days
• US Class Current: 370/252
• CPC Class Codes: H04L 5/0048 Allocation of pilot signals, i.e. of signals known to the receiver
• CPC Class Codes: H04L 5/0053 Allocation of signaling, i.e. of overhead other than pilot signals
• CPC Class Codes: H04W 24/10 Scheduling measurement reports ; Arrangements for measurement reports

Abstract

There are provided a method of user equipment monitoring control information and user equipment using the method. The method includes receiving information about a first reference position for a first Enhanced-Physical Control Format Indication Channel (E-PCFICH) from a Base Station (BS); detecting the first E-PCFICH in a resource indicated by the information about the first reference position; obtaining information about a reference position for a second E-PCFICH based on the information about the first reference position, wherein each of the first E-PCFICH and the second E-PCFICH is a control channel including information about the size of the frequency domain for an Enhanced-Physical Downlink Control Channel (E-PDCCH) for demodulating the control information by using a UE-specific Reference Signal (URS); and detecting the second E-PCFICH based on the obtained information about the reference position for the second E-PCFICH.

Claims

1. A method of User Equipment (UE) monitoring control information, comprising:

receiving information about a first reference position for a first Enhanced-Physical Control Format Indication Channel (E-PCFICH) from a Base Station (BS);

detecting the first E-PCFICH in a resource indicated by the information about the first reference position;

obtaining information about a reference position for a second E-PCFICH based on the information about the first reference position, wherein each of the first E-PCFICH and the second E-PCFICH is a control channel comprising information about a size of a frequency domain for an Enhanced-Physical Downlink Control Channel (E-PDCCH) for demodulating control information by using a UE-specific Reference Signal (URS); and

detecting the second E-PCFICH based on the obtained information about the reference position for the second E-PCFICH.

2. The method of claim 1, further comprising:

obtaining a frequency size of a first E-PDCCH region through the first E-PCFICH and obtaining a frequency size of an second E-PDCCH region through the second E-PCFICH; and

searching the first E-PDCCH region and the second E-PDCCH region for the E-PDCCH for the UE.

3. The method of claim 2, further receiving information about a reference position for the first E-PDCCH indicating a Resource Block (RB) where the first E-PDCCH region is started.

4. The method of claim 3, wherein an RB where the second E-PDCCH region is started is determined based on the information about the reference position for the first E-PDCCH.

5. The method of claim 1, wherein when the first E-PCFICH and the second E-PCFICH are mixed in one or more identical RBs, the information about the first reference position indicates a first RB of the one or more RBs.

6. The method of claim 5, further comprising:

receiving information about a total number of a plurality of E-PCFICHs when the plurality of E-PCFICHs is mixed in the one or more identical RBs.

7. The method of claim 1, wherein the information about the first reference position is received through a higher layer signal.

8. User equipment, comprising:

a Radio Frequency (RF) unit configured to transmit and receive radio signals; and

a processor connected to the RF unit,

wherein the processor is configured to;

receive information about a first reference position for a first Enhanced-Physical Control Format Indication Channel (E-PCFICH) from a Base Station (BS);

detect the first E-PCFICH in a resource indicated by the information about the first reference position;

obtain information about a reference position for a second E-PCFICH based on the information about the first reference position, wherein each of the first E-PCFICH and the second E-PCFICH is a control channel comprising information about a size of a frequency domain for an Enhanced-Physical Downlink Control Channel (E-PDCCH) for demodulating the control information by using a UE-specific Reference Signal (URS); and

detect the second E-PCFICH based on the obtained information about the reference position for the second E-PCFICH.

9. The user equipment of claim 8, wherein the processor obtains a frequency size of a first E-PDCCH region through the first E-PCFICH, obtains a frequency size of an second E-PDCCH region through the second E-PCFICH, and searches the first E-PDCCH region and the second E-PDCCH region for the E-PDCCH for the user equipment.

10. The user equipment of claim 9, wherein the process receives information about a reference position for the first E-PDCCH indicating a Resource Block (RB) where the first E-PDCCH region is started.

11. The user equipment of claim 10, wherein an RB where the second E-PDCCH region is started is determined based on the information about the reference position for the first E-PDCCH.

12. The user equipment of claim 8, wherein when the first E-PCFICH and the second E-PCFICH are mixed in one or more identical RBs, the information about the first reference position indicates a first RB of the one or more RBs.

13. The user equipment of claim 12, wherein the processor further receives information about a total number of a plurality of E-PCFICHs when the plurality of E-PCFICHs is mixed in the one or more identical RBs.

14. The user equipment of claim 8, wherein the information about the first reference position is received through a higher layer signal.