Samsung Electronics Co., Ltd.

Sunny Chang

Hyun-Jeong Kang

Yeong-Moon Son

Young-Bae Park

Ki-Back Kim

Tu K Nguyen

Sang-Kyou Ryou

Methods and apparatuses are provided for controlling a user equipment (UE) in a mobile communication system is provided. A first security mode command message for security authentication of the UE is received from a first base station (BS). It is determined whether a cell reselection event between the UE and a second BS is generated before the security authentication with the first BS is completed. The UE is controlled so that security states of the UE and the second BS match, when the cell reselection event is generated before the security authentication with the first BS is completed.

User equipment in mobile communication system and control method thereof

Apparatuses and methods for providing an emergency service in a wireless communication system are provided. The method includes allocating a Connection IDentifier (CID) used to transmit the emergency service message, determining a Convergence Sublayer (CS) type for processing the emergency service message, generating a Downlink Channel Descriptor (DCD) message which comprises at least one of the allocated CID and information relating to the determined CS type, and transmitting the generated DCD message to a Mobile Station (MS).

Apparatuses and methods for providing emergency service in a wireless communication system

Growing community of inventors

Gyeonggi-do, South Korea

Sunny Chang