# US 2014/0192736 A1 · Method and apparatus for configuring configuration information at user equipment in a mobile communication system

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- Number: US 2014/0192736 A1
- Document ID: US20140192736A1
- Status: Published application
- Kind: A1
- Application number: 14/149,693
- Filed: 2014-01-07
- Published: 2014-07-10
- Earliest claimed: 2013-01-07
- Assignees: Samsung Electronics Co., Ltd.
- Applicants: Samsung Electronics Co., Ltd
- Inventors: Kyeong-In Jeong; Gert Jan Van Lieshout; Hyo-Jin Lee
- Web page: https://patentgrep.com/patent/US20140192736A1

## CPC

- H04B 17/373: Predicting channel quality {or other radio frequency [RF]} parameters
- H04L 5/00: Arrangements affording multiple use of the transmission path
- H04L 5/0035: {Resource allocation in a cooperative multipoint environment}
- H04L 5/0057: {Physical resource allocation for CQI}
- 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
- H04B: TRANSMISSION
- H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M)

## Abstract

A method for configuring configuration information with a user equipment in a mobile communication system is provided. The method includes determining, upon receipt of a Physical Uplink Control Channel/Sounding Reference Signal (PUCCH/SRS) release request from a lower layer, whether configuration information required for a transmission mode supporting Coordinated Multi-Point (CoMP) has been configured, and if the configuration information has been configured, reconfiguring a setting state of the configuration information.

## Claims

### Claim 1

A method for configuring configuration information at a user equipment in a mobile communication system, the method comprising:
determining, upon receipt of a Physical Uplink Control Channel/Sounding Reference Signal (PUCCH/SRS) release request from a lower layer, whether configuration information required for a transmission mode supporting Coordinated Multi-Point (CoMP) has been configured; and
if the configuration information has been configured, reconfiguring a setting state of the configuration information.

### Claim 2 (depends on 1)

The method of claim 1, wherein the configuration information comprises configuration information about each of CSI-RS-ConfigZP-r11, CSI-RS-ConfigNZP-r11, CSI-IM-Config-r11, CQI-ReportPeriodExt-r11, AntennaInfoDedicated-r11, and CSI-Process-r11.

### Claim 3 (depends on 2)

The method of claim 2, wherein the reconfiguring comprises maintaining configurations of CSI-RS-ConfigZP-r11 and CSI-RS-ConfigNZP-r11, and wherein the CSI-RS-ConfigZP-r11 is configured to provide resource configuration information about a Channel State Information Reference Signal (CSI-RS) requiring zero transmission power and the CSI-RS-ConfigNZP-r11 is configured to provide resource configuration information about a CSI-RS requiring non-zero transmission power.

### Claim 4 (depends on 2)

The method of claim 2, wherein the reconfiguring comprises releasing a configuration of each of CSI-IM-Config-r11, CQI-ReportPeriodExt-r11, AntennaInfoDedicated-r11, and CSI-Process-r11.

### Claim 5 (depends on 4)

The method of claim 4, wherein the CSI-IM-Config-r11 is configured to provide resource configuration information about Channel State Information-Interference Measurement (CSI-IM), the CQI-ReportPeriodExt-r11 is configured to provide configuration information for periodic Channel Quality Indicator (CQI) reporting of the user equipment, the AntennaInfoDedicated-r11 comprises information about a transmission mode and codebook subset restriction information, and the CSI-Process-r11 is configured to specify a reporting unit in which the UE reports a CQI.

### Claim 6 (depends on 1)

The method of claim 1, wherein the receiving comprises, upon sensing failure of an uplink transmission at the lower layer, receiving the PUCCH/SRS release request from the lower layer.

### Claim 7 (depends on 6)

The method of claim 6, wherein if at least one of expiration of a timer used to determine validity of an uplink transmission timing for the uplink transmission or a number of transmissions of an uplink Scheduling Request (SR) message exceeding a maximum transmission number is satisfied, the failure of the uplink transmission is sensed.

### Claim 8

A user equipment configured to configure configuration information in a mobile communication system, the user equipment comprising:
a controller configured to, upon receipt of a Physical Uplink Control Channel/Sounding Reference Signal (PUCCH/SRS) release request from a lower layer through a transceiver, determine whether configuration information required for a transmission mode supporting Coordinated Multi-Point (CoMP) has been configured and, if the configuration information has been configured, to reconfigure a setting state of the configuration information.

### Claim 9 (depends on 8)

The user equipment of claim 8, wherein the configuration information comprises configuration information about each of CSI-RS-ConfigZP-r11, CSI-RS-ConfigNZP-r11, CSI-IM-Config-r11, CQI-ReportPeriodExt-r11, AntennaInfoDedicated-r11, and CSI-Process-r11.

### Claim 10 (depends on 9)

The user equipment of claim 9, wherein when reconfiguring the configuration information, the controller is configured to maintain configurations of CSI-RS-ConfigZP-r11 and CSI-RS-ConfigNZP-r11, and
wherein the CSI-RS-ConfigZP-r11 provides resource configuration information about a Channel State Information Reference Signal (CSI-RS) requiring zero transmission power and the CSI-RS-ConfigNZP-r11 provides resource configuration information about a CSI-RS requiring non-zero transmission power.

### Claim 11 (depends on 9)

The user equipment of claim 9, wherein when reconfiguring the control information, the controller is configured to release a configuration of each of CSI-IM-Config-r11, CQI-ReportPeriodExt-r11, AntennaInfoDedicated-r11, and CSI-Process-r11.

### Claim 12 (depends on 11)

The user equipment of claim 11, wherein the CSI-IM-Config-r11 is configured to provide resource configuration information about Channel State Information-Interference Measurement (CSI-IM), the CQI-ReportPeriodExt-r11 is configured to provide configuration information for periodic Channel Quality Indicator (CQI) reporting of the user equipment, the AntennaInfoDedicated-r11 comprises information about a transmission mode and codebook subset restriction information, and the CSI-Process-r11 is configured to specify a reporting unit in which the UE reports a CQI.

### Claim 13 (depends on 8)

The user equipment of claim 8, wherein upon sensing failure of an uplink transmission at the lower layer, the controller is configured to receive the PUCCH/SRS release request from the higher layer through the transceiver.

### Claim 14 (depends on 13)

The user equipment of claim 13, wherein if at least one of expiration of a timer used to determine validity of an uplink transmission timing for the uplink transmission or a number of transmissions of an uplink Scheduling Request (SR) message exceeding a maximum transmission number is satisfied, the controller is configured to sense the failure of the uplink transmission.