Samsung Electronics Co., Ltd.

Electronics and Telecommunications Research Institute

Kt Corporation

Sk Telecom Company, Ltd.

Hanaro Telecom., Inc.

Ktfreetel Co., Ltd

June-Bae Seo

Nam-Hoon Park

Seung-Que Lee

Nam-Suk Lee

A ranging method of an access terminal comprising receiving and analyzing UL-MAP/DL-MAP; selecting a given uplink sub-channel number and a symbol number from the UL_MAP when a ranging event is generated; requesting a ranging process by transmitting a CDMA code; receiving a ranging response message broadcasted from the access point; extracting a CDMA code, a sub-channel number, and a symbol number from the received ranging response message, comparing the extracted result and the stored ranging parameters, and adjusting transmission power, timing, and frequency offset on the basis of the extracted result or discarding the ranging response message; and terminating a ranging response message receipt operation.

Terminal in wireless communication system and ranging method thereof

A recording medium having an internal data structure for uplink data transmission based on QoS in a mobile terminal of an OFDMA/TDMA-based high-speed portable Internet system, the internal data structure comprising a connection identifier index indicating a predetermined connection of the mobile terminal; a service class index indicating QoS classes of uplink data; a control channel index indicating a type of a control channel for transmission of a management message of the mobile terminal; an access type index indicating a type of access for a bandwidth request of the mobile terminal; a user packet list having IP packets linked to each other through a linked list; a management message list having the management messages linked to each other through a linked list; and a bandwidth request list having informative elements that are linked to each other for the bandwidth request through a linked list.

Internal data structure of mobile terminal for QoS-based uplink data transmission, and operational methods thereof

Growing community of inventors

Daejeon, South Korea

June-Bae Seo