# US 9,521,627 B2 · Method of controlling transmit power of UE in wireless communication system and apparatus for the same

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- Number: US 9,521,627 B2
- Document ID: US9521627B2
- Status: Granted
- Kind: B2
- Application number: 14/528,513
- Filed: 2014-10-30
- Published: 2015-02-26
- Granted: 2016-12-13
- Earliest claimed: 2012-03-13
- Assignees: LG Electronics Inc.
- Applicants: LG Electronics Inc.
- Inventors: Sungduck Chun; Sunghoon Jung; Seungjune Yi; Youngdae Lee; Sungjun Park
- Web page: https://patentgrep.com/patent/US9521627B2

## CPC

- H04W 52/0225: {using monitoring of external events, e.g. the presence of a signal}
- H04W 52/0216: {using a pre-established activity schedule, e.g. traffic indication frame}
- H04W 52/0245: {according to signal strength}
- H04W 52/18: TPC being performed according to specific parameters
- H04W 52/221: {using past power control commands}
- Y02D 30/70: in wireless communication networks
- H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72)
- Y02D: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE

## Abstract

Disclosed herein is a method of transmitting a signal at a user equipment (UE) in a wireless communication system. The method includes receiving a radio resource control (RRC) configuration message from a network; determining a preference value relating to power saving after receiving the RRC configuration message; and transmitting the determined preference value relating to the power saving to the network.

## Claims

### Claim 1

A method of transmitting a signal at a user equipment (UE) in a wireless communication system, the method comprising:
receiving a radio resource control (RRC) configuration message from a network, wherein the RRC configuration message comprises a first field that enables the UE to transmit to the network a preference value relating to power saving;
determining a first preference value relating to power saving after receiving the RRC configuration message; and
transmitting the determined first preference value relating to power saving to the network when the determined first preference value relating to power saving is different from a second preference value relating to power saving which was last transmitted to the network.

### Claim 2 (depends on 1)

The method of claim 1, wherein the RRC configuration message is a RRC configuration enquiry message or a RRC reconfiguration message.

### Claim 3 (depends on 1)

The method of claim 1, wherein the determined first preference value relating to the power saving is transmitted using a RRC reconfiguration complete message or a RRC configuration response message.

### Claim 4 (depends on 2)

The method of claim 2, wherein the determined first preference value relating to the power saving is included in a second field of a response message of the RRC reconfiguration message.

### Claim 5 (depends on 4)

The method of claim 4, wherein the second field is a reason field.

### Claim 6 (depends on 1)

The method of claim 1, wherein the UE is in a RRC connected mode.

### Claim 7 (depends on 1)

The method of claim 1, wherein the first preference value relating to the power saving is based on an application which is being driven in the UE.