Samsung Electronics Co., Ltd.

Unwired Planet International Limited

Seoul National University

Unwiried Planet International Limited

Won-Il Roh

Chan-Byoung Chae

Jung-Je Son

Hong-Sil Jeong

Hyun-Jeong Kang

Sung-ryul Yun

Yeong-Moon Son

Hyun-Kyu Yu

Jae-Hee Cho

Jeong-ho Park

Sung-Jin Lee

Jae-Weon Cho

Ji-Yun Seol

Seung-Joo Maeng

Jae-Ho Jeon

Geun-Hwi Lim

Jaehyuk Jang

Dong-seek Park

Jung-Shin Park

Young-Bin Chang

Jae-Yoel Kim

Dae-Gyun Kim

Young-Ho Jung

Sung-Ryul Yun

Soon-Young Yoon

Chi-Woo Lim

Tae-Young Kim

Pan-Yuh Joo

Sung-Jin Kim

Ho-Kyu Choi

Young-soo Park

Yong-Seok Kim

June Moon

Ho-Jin Kim

In-Seok Hwang

Young-Soo Park

Jae-Jeong Shim

Jeong-Tae Oh

Kyun-Byoung Ko

Byung-Wook Jun

Kyung-Whoon Cheun

Jae-Hak Chung

Chang-Yoon Oh

Min Sagong

Sung-Nam Hong

Yegin Alper

Seung-Hoon Nam

Chan-Soo Hwang

Dong-Seek Park

Keun-Chul Hwang

Chan-Ho Min

Ki-ho Kim

Taori Rakesh

Hwa-Sun You

Jae-hee Cho

Myung-Kwang Byun

Jung-Hoon Cheon

Jeong-Ho Park

Kwang-Bok Lee

Sung-jin Lee

Hyoung-Woon Park

Jae-Hyuk Jang

Jung-hoon Cheon

Jae-Weon Choi

Sung-Ryul 811-806 Byeokjeokgol Yun

Chang-Byoung Chae

Chan Byoung Chae

A circuit includes a controller to determine whether to prohibit entry of an end unit to a base station in a wireless communication network, the controller configured to process a media access control (MAC) management message that includes a timer value, the timer value designating a time period during which entry is prohibited.

Apparatus and method for controlling a terminal accessing a base station in broadband wireless communication system

Methods for operating a Base Station (BS) and a User Equipment (UE) in a wireless communication system using a primary frequency and one or more secondary frequencies, and apparatuses for the BS and UE for carry out the methods, are provided. The method for operating the BS includes determining whether to activate or deactivate at least one of the one or more secondary frequencies, and transmitting a message comprising a bitmap indicating the activation or deactivation of the at least one of the one or more secondary frequencies to the UE. The method for operating the UE includes receiving a message comprising a bitmap indicating activation or deactivation of at least one of the one or more secondary frequencies from the BS, and activating or deactivating the at least one of the one or more secondary frequencies based on the received message.

Apparatus and method for optionally using secondary frequency assignment in a wireless communication system using multiple bands

A circuit includes a controller to determine whether to prohibit entry of an end unit to a base station in a wireless communication network, the controller con figured to process a media access control (MAC) management message that includes a timer value, the timer value designating a time period during which entry is prohibited.

A method and a device for managing mobility of a mobile station in an Internet Protocol (IP) based network are provided. The method includes receiving a request for allocation of an IP address from an application, determining a type of IP address to be allocated to the application based on the request for the allocation of the IP address, and allocating the determined type of IP address to the application.

Method and device for managing mobility in IP based network

Disclosed is a system and a method of signal transmission/reception by a mobile station in a wireless communication system. The method includes: transmitting a first sub-band preparation indicator, which indicates that the mobile station has been prepared for transmission/reception of a signal through a first sub-band, to a base station through a primary band; transmitting a first sub-band failure indicator to the base station through the primary band upon detecting failure in transmitting the first sub-band preparation indicator; receiving sub-band information on a second sub-band, which is different from the first sub-band, from the BS through the primary band; and acquiring synchronization with the second sub-band, so as to enable transmission/reception of a signal through the second sub-band based on the sub-band information.

System and method for transmitting and receiving a signal using multiple frequency bands in a wireless communication system

Disclosed is a method and device for transmitting and receiving a signal by using modulation techniques in a wireless communication system. The method according to the present invention includes: selecting one of QAM and improved QAM according to at least one predefined criterion; encoding information bits to be transmitted according to a first encoding scheme and mapping encoded information bits to QAM symbols when the QAM is selected; encoding information bits to be transmitted according to a second encoding scheme and mapping encoded information bits to improved QAM symbols when the improved QAM is selected; and transmitting the QAM symbols or the improved QAM symbols through a given resource region.

Method and device for transmitting and receiving signal by using modulation techniques in wireless communication system

A method for operating a random access channel (RACH) by a base station (BS) performing beamforming with at least one receive chain includes broadcasting RACH configuration information; and receiving an RACH signal with at least one receive chain, wherein the RACH configuration information includes threshold information to divide an RACH groups into a first group and a second group. A BS for operating a RACH by performing beamforming with at least one receive chain in a communication system, the BS comprising a controller configured to broadcast RACH configuration information and control at least one receive chain to receive an RACH signal, wherein the RACH configuration information includes threshold information to divide RACH groups into a first group and a second group. Other embodiments including a user equipment are also disclosed.

Method and apparatus for transmitting or receiving RACH signal in beamforming system

A method for routing data by a Corresponding Mobility Agent (CMA) in a mobile communication system is provided. The method includes managing mobility for a Mobile Station (MS) with a Mobile Access Gateway (MAG), and routing a data packet between a Corresponding Node (CN) and the MS based on a location of the MS, wherein the CMA is mapped to an application server which provides an application service.

Apparatus and method for routing data in mobile communication system

One or more embodiments provides method for transmitting a signal by a transmitting apparatus in wireless a communication system supporting a modulation scheme based on a quadrature amplitude modulation (QAM) scheme and a frequency shift keying (FSK) scheme. The method includes determining at least one first bit which will be mapped to at least one QAM symbol and at least one second bit which will be mapped to at least one FSK symbol among bits included in an encoded input bit stream; and generating a modulation symbol by mapping the at least one first bit to the at least one QAM symbol and mapping the at least one second bit to the at least one FSK symbol based on a Hamming distance of the at least one second bit.

Method and apparatus for transmitting/receiving signal in wireless communication system

A method for optimizing a data-path by a source Base Station (BS) in a mobile communication network includes determining whether a tunnel among new BSs is set up while tracking a data-flow for a Mobile Station (MS), if the tunnel among the new BSs is set up, determining whether there is a bounce-back, if there is at least one bounce-back, transmitting a first message for detecting a root of an arbitrary bounce-back among the at least one bounce-back and setting up a short-cut tunnel to other end of the arbitrary bounce-back, and after transmitting the first message, receiving a second message including bounce-back root information indicating the root of the arbitrary bounce-back from the other end of the arbitrary bounce-back. Other various embodiments including a source BS, a target BS, and a backhaul network are also disclosed.

Apparatus and method for optimizing data-path in mobile communication network

Growing community of inventors

Yongin-si, South Korea

Won-Il Roh