Interference measurement method and apparatus for use in distributed antenna system

• US 9,510,225 B2
• Filed: 09/25/2013
• Issued: 11/29/2016
• Est. Priority Date: 09/25/2012
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Kim, Younsun, Lee, Hyojin, Kim, Youngbum, Cho, Joonyoung, Ji, Hyoungju
• Primary Examiner(s): Gidado, Rasheed
• Application Number:
  US14/036,644
• Publication Number:
  US 20140086082A1
• Time in Patent Office: 1,161 Days
• Field of Search: 370/252, 370/229
• US Class Current: 1/1
• CPC Class Codes: H04B 17/345 Interference values signal-to-interference ratio [SIR] or carrier-to-interference ratio [CIR] H04B17/336
• CPC Class Codes: H04B 7/024 Co-operative use of antennas of several sites, e.g. in co-ordinated multipoint or co-operative multiple-input multiple-output [MIMO] systems
• CPC Class Codes: H04L 5/0048 Allocation of pilot signals, i.e. of signals known to the receiver
• CPC Class Codes: H04L 5/0062 Avoidance of ingress interference, e.g. ham radio channels
• CPC Class Codes: H04L 5/0073 Allocation arrangements that take into account other cell interferences for intercell interference mitigation or co-ordination in orthogonal multiplex systems H04J11/005
• CPC Class Codes: H04W 24/10 Scheduling measurement reports ; Arrangements for measurement reports
• CPC Class Codes: H04W 72/54 based on quality criteria

Abstract

An interference measurement method and apparatus for use in a Distributed Antenna System (DAS) is provided. The method for transmitting channel state information based on interference measurement of a terminal in a Distributed Antenna System (DAS) according to the present disclosure includes receiving configuration of Interference Measurement Resource (IMR) for measuring interferences caused by plural Transmission Points (TPs), receiving control information including scheduling information on Physical Downlink Shared Channel (PDSCH), determining whether IMR-based interference measurement and PDSCH reception occur at a same subframe, and transmitting the channel state information generated according to a result of the determination. The interference measurement method and apparatus of the present disclosure is capable of measuring interference for efficient communication in the distributed antenna system.

Claims

1. A method for a transceiver to support interference measurement of a terminal in a wireless network system, the method comprising:

identifying configuration information on an interference measurement resource (IMR) for another transceiver;

if a physical downlink shared channel (PDSCH) for the transceiver does not exist in a resource corresponding to the IMR for the another transceiver, generating an interference signal; and

transmitting, by the transceiver, the interference signal in the resource to the terminal.

2. The method of claim 1, wherein an interference measurement is performed by the terminal based on the IMR.

3. The method of claim 2, wherein channel status information is transmitted from the terminal based on the interference measurement.

4. A transceiver supporting interference measurement of a terminal in a wireless network system, the transceiver comprises:

a transmitter configured to transmit a signal; and

a controller configured to;

identify configuration information on an interference measurement resource (IMR) for another transceiver,

if a physical downlink shared channel (PDSCH) for the transceiver does not exist in a resource corresponding to the IMR for the another transceiver, generate an interference signal, and

control the transmitter to transmit the interference signal in the resource to the terminal.

5. The base station of claim 4, wherein an interference measurement is performed by the terminal based on the MIR.

6. The base station of claim 5, wherein channel status information is transmitted from the terminal based on the interference measurement.

7. An interference measurement method of a terminal in a wireless network system, the method comprising:

receiving, from a first transceiver, configuration information on an interference measurement resource (IMR);

receiving, from a second transceiver, a signal;

performing an interference measurement based on the IMR; and

transmitting channel status information based on the interference measurement,

wherein if a physical downlink shared channel (PDSCH) for the second transceiver does not exist in a resource corresponding to the IMR for the first transceiver, an interference signal is generated and the interference signal is transmitted in the resource from the second transceiver to the terminal.

8. The method of claim 7, further comprising:

receiving the first transceiver configuration information on a channel status information reference signal (CSI-RS); and

performing a channel status measurement based on the CSI-RS,

wherein the channel status information is transmitted based on the interference measurement and the channel status measurement.

9. A terminal for measuring interference in a wireless network system, the terminal comprising:

a transceiver configured to transmit and receive signals; and

a controller configured to;

control the transceiver to receive, from a first transceiver, configuration information on an interference measurement resource (IMR),

control the transceiver to receive a signal from a second transceiver,

perform an interference measurement based on the IMR, and

control the transceiver to transmit channel status information based on the interference measurement,

wherein if a physical downlink shared channel (PDSCH) for the second transceiver does not exist in a resource corresponding to the IMR for the first transceiver, an interference signal is generated and the interference signal is transmitted in the resource from the second transceiver to the terminal.

10. The terminal of claim 9, wherein:

the controller is further configured to control the transceiver to receive the first transceiver configuration information on a channel status information reference signal (CSI-RS), and perform a channel status measurement based on the CSI-RS, and

the channel status information is transmitted based on the interference measurement and the channel status measurement.