Samsung Electronics Co., Ltd.

Chang-Yeon Kim

Ki-Back Kim

Jae-Jeong Shim

Yoon-Jeong Ha

Jung-Shin Park

Sung-Man Kim

Geun-Hwi Lim

Jun-Sung Lee

Eun-Chan Park

Sung-Tak Jang

Han-Kyung Lee

Kwon-Young Kim

Hyung-Seok Ha

Hyo-Seon Oh

A network includes a Mobile Station (MS) for sending a Service Flow (SF) modification request message to a Base Station (BS) to modify an SF. The BS sends a path modification request message to a serving SF Authorization (SFA) when there is the information on the SF. The BS also sends an SF modification response message comprising a Confirmation Code 'Reject SF not found' to the MS when there is no information on the SF. The serving SFA sends a resource reservation request message to an anchor SFA when there is the information on the SF, and sends a path modification response message comprising a Failure Indication (FI) 'Requested Context Unavailable' to the BS when there is no information on the SF. The anchor SFA sends a resource reservation response message comprising the FI &#x2018;Requested Context Unavailable&#x2019; to the serving SFA when there is no information on the SF.

Apparatus and method for handling error for service flow modification a broadband wireless communication network

An apparatus and method for Admission Control (AC) in a broadband wireless communication system are provided. The apparatus includes a classification unit for determining a Mobile Virtual Network Operator (MVNO), from a plurality of MVNOs, that provides services for a generated resource request, a manager for evaluating a resource occupation status of the MVNO and a resource amount permitted to the MVNO, and a determination unit for determining whether to admit the resource request according to at least one of the resource occupation status of the determined MVNO, the resource amount permitted to the determined MVNO and an available total resource amount.

Apparatus and method for admission control considering multiple service providers in a broadband wireless communication system

A sleep mode entry of a terminal in a broadband wireless communication system is provided. A base station includes an adjuster for, when a first terminal requests a sleep mode entry and lengths of requested sleep interval and listening interval do not meet a certain condition, adjusting the lengths of the sleep interval and the listening interval; and a determiner for setting a distribution of the sleep interval and the listening interval according to the adjustment of the adjuster and determining a sleep mode entry time of a second terminal which enters a sleep mode after the distribution of the sleep interval and the listening interval is set.

Apparatus and method for controlling sleep mode entry in broadband wireless communication system

An apparatus and method for synchronizing a broadcast message in a broadband wireless communication system are provided. In a method of operating a Base Station (BS) for synchronizing the broadcast message in the broadband wireless communication system, the method includes setting a transmission start frame number of each of broadcast messages so that the transmission start frame number is identical to those of neighbor BSs according to a frame number generated based on Global Positioning System (GPS) information, if at least one or more of the broadcast messages are superposed in an nframe, transmitting broadcast messages having a high priority among the at least one or more of the broadcast messages in the nframe, and transmitting broadcast messages, having a low priority and not transmitted in the nframe, in an (n+1)frame with a time delay, and setting a next transmission start time of the broadcast messages having the high priority and the broadcast messages having the low priority to an (n+m)frame, wherein n is an integer indicating a frame number for transmitting the broadcast messages, and m is an integer indicating a transmission period of a corresponding broadcast message.

Method and apparatus for synchronizing broadcast message in broadband wireless communication system

A method for operating a Base Station (BS) in a wireless communication system includes, when a bandwidth request message is received from a Mobile Station (MS), whether a resource allocated to the MS exists is determined. When the resource allocated to the MS does not exist, a resource is temporarily allocated to the MS. A message indicating a network initial entry is transmitted to the MS using the temporarily allocated resource.

Method for resuming services in a wireless communication system

An apparatus and method are provided for load balancing in a broadband communication system. In an initial network entry/network reentry/handover, whether to allow a user terminal and whether to allow each service flow are checked. The channel state and load state of candidate frequency assignments and subcells are detected. The ranging status of a corresponding frequency assignment or a corresponding subcell is set according to whether to allow the user terminal. The allowable candidate frequency assignment and subcells are selected and transmitted.

Method and apparatus for load balancing in broadband communication system

An ARQ system and method for a BWA communication system are provided. A transmitter activates an ARQ timer if exist transmission data or retransmission data and transmits the transmission data or the retransmission data to a receiver. The transmitter then receives a response signal for the transmitted data or the retransmitted data and stops the ARQ timer in the not exist of transmission data.

Growing community of inventors

Suwon-si, South Korea

Chang-Yeon Kim