Lg Electronics Inc.

Evolved Wireless LLC

Optis Cellular Technology, LLC

Equo IP LLC

Hyundai Motor Company

Kia Motors Corporation

Young Dae Lee

Sung Duck Chun

Sung Jun Park

Seung June Yi

Sung Hoon Jung

Myung Cheul Jung

Jae Wook Lee

Sungduck Chun

Sung-Duck Chun

Patrick Fischer

Seon Don Lee

Sun Young Lee

Jian Xu

Sung Min Lee

Seungjune Yi

So Young Lee

Seong Jun Park

Sunghoon Jung

Kyung Min Park

Jin Sook Ryu

Sung Lark Kwon

Kyung Jun Lee

Sung June Park

Bong Hoe Kim

Seong Jin Park

Gene Beck Hahn

Sun Hee Kim

Jin Sung Choi

Joon Kui Ahn

Dong Youn Seo

Hak Seong Kim

Dong Wook Roh

Seung-June Yi

Yong Kim

Min Jung Kim

Seung Hoon Hwang

Dae Wook Byun

Myung Cheol Jung

Seung June Yl

Seoung June Yi

Yong Woo Shin

Seung Jun Yi

Sung Jung Park

A user equipment (UE) receives a timing advance medium access control (MAC) control element. The UE applies a timing advance command of the timing advance MAC control element and to start or restart a time alignment timer. The UE releases physical uplink control channel (PUCCH) resources and releases any assignment sounding reference signal (SRS) resources, when the time alignment timer expires. The UE flushes hybrid automatic request (HARQ) buffers, when the time alignment timer expires or is stopped.

Timing alignment procedure for a user equipment

A method for performing random access in a wireless communication system is provided. The method includes transmitting a preamble for random access in uplink, receiving a random access response message including back-off information as a response to the preamble, and performing back-off using the back-off information when the random access has failed.

Method for signaling back-off information in random access

A mobile communication technology, and, more particularly, a method for efficiently transmitting data stored in a message 3 (Msg3) buffer and a user equipment for the same is disclosed. The method of transmitting data by a user equipment in uplink includes receiving an uplink (UP) Grant signal from a base station on a specific message, determining whether there is data stored in a message 3 (Msg3) buffer when receiving the UL Grant signal on the specific message, determining whether the specific message is a random access response message, and transmitting the data stored in the Msg3 buffer to the base station using the UL Grant signal received on the specific message, if there is data stored in the Msg3 buffer when receiving the UL Grant signal on the specific message and the specific message is the random access response message.

Data transmission method and user equipment for the same

A PDCP status report can be transmitted with reduced radio resources by transmitting the reception success or failure of a series of PDCP service data units (SDUs) in the form of a bitmap when configuring the PDCP status report. A PDCP control packet data unit (PDU) is generated to communicate a status report to a transmitting node for one or more PDCP SDUs transmitted from the transmitting node. The PDCP control PDU includes a data/control (D/C) bit field to indicate the PDCP control PDU is a control PDU, a control PDU type field to indicate a type of corresponding control information, a sequence number field to indicate a first missing PDCP SDU, and a bitmap field for a variable length bitmap. A bit in the variable length bitmap indicates whether a corresponding one of the one or more PDCP SDUs has been successfully been received.

Transmitting and receiving a PDCP layer status report in a mobile telecommunications system

A method for a user equipment (UE) to generate a transmission is provided. In this method, a UE starts a time alignment timer when a time alignment command is received. The UE receives an uplink grant; and generates an initial transmission or a retransmission according to the uplink grant only when the time alignment timer is running upon receiving the uplink grant. In addition, the uplink grant is received through a Physical Downlink Control Channel (PDCCH) indicated by a Cell Radio Network Temporary Identifier (C-RNTI) of the UE.

Method for transmitting and receiving signals in consideration of time alignment timer and user equipment for the same

In a wireless mobile communications system, a method of transmitting and receiving radio access information that allows a faster and an efficient way of establishing a radio connection between a terminal and a target base station while performing a handover for the terminal to a cell of the target base station. The network transmits in advance, the radio access information and the like, to the terminal so that the terminal can be connected with the target cell in a faster manner which minimizes the total time for the handover process.

Method of transmitting and receiving radio access information in a wireless mobile communications system

A method for transmitting an uplink signal by a user equipment (UE). The method includes receiving an uplink grant including a new data indicator (NDI) on a physical downlink control channel (PDCCH) from a network, determining whether the PDCCH is not addressed to a temporary cell identifier, determining whether the NDI has been toggled when the PDCCH is not addressed to the temporary cell identifier, and transmitting a new data to the network when the NDI has been toggled.

Method for processing NDI in random access procedure and a method for transmitting and receiving a signal using the same

A method performed by a user equipment (UE) in a wireless communication system, includes triggering a first power headroom report (PHR), wherein a first PHR media access control (MAC) control element (CE) is not transmitted when first uplink (UL) resources cannot accommodate the first PHR MAC CE plus its subheader, triggering a second PHR, determining whether at least one PHR has been triggered and not cancelled and transmitting a second PHR MAC CE when it is determined that the at least one PHR has been triggered and not cancelled, and when second UL resources can accommodate the second PHR MAC CE plus its subheader.

Method and apparatus for performing power headroom reporting procedure in wireless communication system

The present invention provides a method of receiving a timing advance command by a user equipment in a wireless communication system. A terminal receives information on a time advance group from a base station, and also receives the tuning advance command corresponding to the time advance group from the base station.

Method and apparatus for receiving a timing advance command in a wireless communication system

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Anyang-si, South Korea

Young Dae Lee