Samsung Electronics Co., Ltd.

Seung-Il Yoon

Yong Chang

Hong-Sung Chang

Tae-Won Kim

Yeong-Moon Son

Jung-Shin Park

So-Hyun Kim

Bong-Gee Song

Seung-Eun Hong

Kwang-Seop Eom

Jun-Hyuk Song

Tae-Ho Kim

Kyung-Hoon Lee

Hyun-kyu Yun

Jae-Jeong Shim

Geun-Hwi Lim

Dong-Wook Kim

Hyon-Goo Kang

Tae-ho Kim

Gaun-Hwi Lim

Dae-Hyun Nam

Geun-Kwi Lim

Kwan-Young Kim

Jae-Min Soh

Byung-Jo Jun

Methods and apparatus are provided for supporting personal networking by a personal server in a mobile communication system. A request is received from a mobile station. A current position of the mobile station and a required QoS are registered in response to a request of the mobile station. When a handover is made from a resource management system of a service provider B to a resource management system of a service provider A, movement of a user agent to the resource management system of the service provider A is requested based on the current position of the mobile station and the required QoS. When the movement of the user agent is completed, a user information update request is received for updating a result of a QoS negotiation by the required QoS, and information on a selected access network, from the resource management system of the service provider A.

Apparatus and method for supporting personal networking in mobile communication system

A handoff apparatus and a method for reducing the number of session transfers in a mobile communication system are provided, in which an ANC determines whether a target ANT is included in an active set of the mobile communication system, establishes a connection session between the mobile communication system and an AT through a path connecting a target ANC of a different vendor and the target ANT if the target ANT is not included in the active set, and establishes the connection session between the mobile communication system and the AT through a path connecting the ANC and the target ANT if the target ANT is included in the active set.

Apparatus and method for performing handoff to reduce number of session transfers in a mobile communication system

A system and method for fast network re-entry in a broadband wireless access communication system. A mobile station transmits a first message requiring fast network re-entry to a base station and performs the fast network re-entry together with the base station when receiving a second message approving the fast network re-entry from the base station. The base station receives the first message, authenticates the first message using final session information of the mobile station that is previously stored in the base station, transmits the second message to the mobile station when succeeding in authentication of the first message, and performs the fast network re-entry together with the mobile station.

System and method for fast network re-entry in a broadband wireless access communication system

A divided Media Access Control (MAC) protocol structure, a data transmission and reception method, and a handover method and system using the structure in a wireless communication system for efficiently managing session information in handover of an MSS (Mobile Subscriber Station). In the MAC protocol structure, a MAC is divided into a MAC-high layer and a MAC-low layer. The MAC-high layer performs session information-related functions and the MAC-low layer performs functions sensitive to a time delay in relation to handover of an MSS. In the handover method, when an MSS in the wireless communication system performs handover between Access Points (APs), session information is managed at a fixed position by an Access Point Controller (APC) including an MAC-high layer or a serving AP. Therefore, the system load can be reduced and communication quality can be improved.

Divided MAC protocol structure, data transmission and reception method, and handover method and system using the structure in a wireless communication system

A method for controlling operation modes of a medium access control layer by a mobile subscriber station in a broadband wireless access communication system including the mobile subscriber station and a serving base station providing service to the mobile subscriber station is provided. The method includes the steps of: mode-transiting into an idle mode when there is no data transmission between the serving base station and the mobile subscriber station during a predetermined first time interval in an awake mode; detecting movement of the mobile subscriber station in the idle mode into another paging zone covering a target base station, which is different from a paging zone covering the serving base station; and mode-transiting into the awake mode and performing location update together with the target base station when the movement of the mobile subscriber station is detected.

System and method for controlling an operational mode of a MAC layer in broadband wireless access communication system

System and method for controlling an operational mode of a MAC layer in a broadband wireless access communication system

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Seongnam-si, South Korea

Seung-Il Yoon