Method and apparatus for transmitting and receiving feedback information in a mobile communication system

Patent metadata

Field	Value
Publication number	US-9634752-B2
Application number	US-201514861536-A
Country	US
Kind code	B2
Filing date	Sep 22, 2015
Priority date	Oct 12, 2011
Publication date	Apr 25, 2017
Grant date	Apr 25, 2017

Abstract

A method and user equipment for transmitting channel state information (CSI) are provided. The method includes identifying a first CSI configuration with a first index and a first information for a period and an offset; identifying a second CSI configuration with a second index and a second information for a period and an offset; and reporting a CSI for a CSI configuration with a lowest index among the first CSI configuration and the second CSI configuration, in case of collision between report of a CSI for the first CSI configuration and report of a CSI for the second CSI configuration.

First claim

What is claimed is:

1. A method for transmitting channel state information (CSI), the method comprising:
identifying, by a user equipment (UE), a first CSI configuration with a first index and a first information for a first period and a first offset;
identifying, by the UE, a second CSI configuration with a second index and a second information for a second period and a second offset; and
reporting, by the UE, a CSI for a CSI configuration with a lowest index among the first CSI configuration and the second CSI configuration, in case of collision between report of a first CSI for the first CSI configuration and report of a second CSI for the second CSI configuration.

2. The method of claim 1 , wherein the first CSI comprises at least one of a first rank indicator (RI), a first channel quality indicator (CQI), a first precoding matrix indicator (PMI), and a first precoding type indicator (PTI), and the second CSI comprises at least one of a second RI, a second CQI, a second PMI, and a second PTI.

3. The method of claim 1 , wherein the first CSI configuration further comprises first channel measurement information and first interference measurement information, and the second CSI configuration comprises second channel measurement information and second interference measurement information.

4. The method of claim 1 , wherein at least one of first channel measurement information and first interference measurement information are configured,
wherein the first CSI configuration is set based on at least one of the configured first channel measurement information and the configured first interference measurement information,
wherein at least one of second channel measurement information and second interference measurement information are configured, and
wherein the second CSI configuration is set based on at least one of the configured second channel measurement information and the configured second interference measurement information.

5. The method of claim 4 , wherein the first CSI for the first CSI configuration is determined based on at least one of the configured first channel measurement information and the configured first interference measurement information, and
wherein the second CSI for the second CSI configuration is determined based on at least one of the configured second channel measurement information and the configured second interference measurement information.

6. A method for receiving channel state information (CSI), the method comprising:
transmitting, by a base station, a first CSI configuration with a first index and a first information for a first period and a first offset;
transmitting, by the base station, a second CSI configuration with a second index and a second information for a second period and a second offset; and
receiving, by the base station, a CSI for a CSI configuration with a lowest index among the first CSI configuration and the second CSI configuration, in case of collision between report of a first CSI for the first CSI configuration and report of a second CSI for the second CSI configuration.

7. The method of claim 6 , wherein the first CSI comprises at least one of a first rank indicator (RI), a first channel quality indicator (CQI), a first precoding matrix indicator (PMI), and a first precoding type indicator (PTI), and the second CSI comprises at least one of a second RI, a second CQI, a second PMI, and a second PTI.

8. The method of claim 6 , wherein the first CSI configuration further comprises first channel measurement information and first interference measurement information, and the second CSI configuration comprises second channel measurement information and second interference measurement information.

9. The method of claim 6 , wherein at least one of first channel measurement information and first interference measurement information are configured,
wherein the first CSI configuration is set based on at least one of the configured first channel measurement information and the configured first interference measurement information,
further comprising at least one of second channel measurement information and second interference measurement information are configured, and
wherein the second CSI configuration is set based on at least one of the configured second channel measurement information and the configured second interference measurement information.

10. The method of claim 9 , wherein the first CSI for the first CSI configuration is determined based on at least one of the configured first channel measurement information and the configured first interference measurement information, and
wherein the second CSI for the second CSI configuration is determined based on at least one of the configured second channel measurement information and the configured second interference measurement information.

11. A user equipment (UE) for transmitting channel state information (CSI), the UE comprising:
a processor configured to identify a first CSI configuration with a first index and a first information for a first period and a first offset, and identify a second CSI configuration with a second index and a second information for a second period and a second offset; and
a transceiver configured to report a CSI for a CSI configuration with a lowest index among the first CSI configuration and the second CSI configuration, in case of collision between report of a first CSI for the first CSI configuration and report of a second CSI for the second CSI configuration.

12. The UE of claim 11 , wherein the first CSI comprises at least one of a first rank indicator (RI), a first channel quality indicator (CQI), a first precoding matrix indicator (PMI), and a first precoding type indicator (PTI), and the second CSI comprises at least one of a second RI, a second CQI, a second PMI, and a second PTI.

13. The UE of claim 11 , wherein the first CSI configuration further comprises first channel measurement information and first interference measurement information, and the second CSI configuration comprises second channel measurement information and second interference measurement information.

14. The UE of claim 11 , wherein at least one of first channel measurement information and first interference measurement information are configured,
wherein the first CSI configuration is set based on at least one of the configured first channel measurement information and the configured first interference measurement information,
wherein at least one of second channel measurement information and second interference measurement information are configured, and
wherein the second CSI configuration is set based on at least one of the configured second channel measurement information and the configured second interference measurement information.

15. The UE of claim 14 , wherein the first CSI for the first CSI configuration is determined based on at least one of the configured first channel measurement information and the configured first interference measurement information, and
wherein the second CSI for the second CSI configuration is determined based on at least one of the configured second channel measurement information and the configured second interference measurement information.

16. A base station for receiving channel state information (CSI), the base station comprising:
a transmitter configured to transmit a first CSI configuration with a first index and a first information for a first period and a first offset, and transmit a second CSI configuration with a second index and a second information for a second period and a second offset; and
a receiver config

Assignees

• Samsung Electronics Co Ltd
• Samsung Electronics Co Ltd

Inventors

• Lee Hyo-Jin
• Kim Youn-Sun
• Kim Ki-Il

Classifications

• H04W72/21

  in the uplink direction of a wireless link, i.e. towards the network · CPC title

• H04W72/541

  using the level of interference · CPC title

• H04W72/082

  Electricity · mapped topic

• H04B7/0626 Primary

  Channel coefficients, e.g. channel state information [CSI] · CPC title

• H04B17/345

  Interference values ({signal-to-interference ratio [SIR] or carrier-to-interference ratio [CIR]} H04B17/336) · CPC title