Abstract:
A method, an apparatus and a system for reserving network resources based on terminal moving speed and a mobile terminal are provided to predict a terminal prediction moving direction, thereby minimizing reservation of unnecessary network resources. A mobile terminal(310) performs a network resource reservation request about network resources to a central control device(330) when the mobile terminal is out of a signal area of a currently used network resource. The network resource central control device calculates a prediction moving direction of the mobile terminal based on a speed based moving probability model(340) when there is a network reservation request from the mobile terminal. The network resource central control device requests network resource reservation to a network resource regional control device(320) to reserve network resources included in the calculated prediction moving direction. The network resource regional control device reserves network resources according to a reservation request when there is the network resource reservation request according to the prediction moving direction of the mobile terminal from the network resource central control device.
Abstract:
A method and a device for sharing a presentation file in real-time are provided to enhance a learning effect by enabling a viewer to play the presentation file later in the same sequence and voice as a seminar environment, as presenter information such as text and the voice of each slide is extracted/stored to a viewer terminal without any equipment like a camcorder. An information extracting/storing module(12) temporarily stores text and graphics of a presenter from each displayed presentation screen by corresponding to a display position, and records voice of the presenter. An information transferring module(14) transfers information received from the information extracting/storing module to the outside. A user permission module(16) permits access to the information transferring module from the outside. A storage unit(18) stores the information received from the information extracting/storing module. A viewer terminal(20) includes a user request module(24) requesting the presentation screen and a presentation information file to a presenter terminal(10), an information receiving/storing module(22), an information playing module(26), and the storage unit(28).
Abstract:
복수의 망인터페이스를 구비한 전송 장치 및 이를 이용한 전송 방법이 개시된다. 이 전송 장치는 IP 패킷의 세션 정보를 추출하는 세션정보 추출부; 각 망인터페이스의 가용대역폭에 따라 세션 정보와 망인터페이스가 맵핑된 테이블을 기초로, 상기 IP 패킷의 세션정보에 해당되는 망 인터페이스를 결정하는 망인터페이스 결정부; 및 상기 결정된 망인터페이스로 상기 IP 패킷을 전달하는 트래픽 분배부를 포함하는 것을 특징으로 한다. 본 발명에 따르면, 트래픽을 다수의 망에 분산시켜 다중 모드 동시 접속 환경에서 최적의 통신 성능을 보장받을 수 있고, 망 자원을 최대한 활용할 수 있다. 다중 모드, 트래픽 분산, 트래픽 분배, QoS
Abstract:
A system and a method for configuring environments of a private system by using a smart card in a public system are provided to supply continuity regardless of a system by reconfiguring a working environment similar to a private system through the insertion into a smart card in any place. A user authentication module(210) authenticates a connected smart card(100), and a system environment and working environment configuring module(220) is connected to a service providing server(300) to receive an installation program or alternative program. The configuration module re-configures the current environment as the recent working environment. A system environment and working environment configuration information recording module(230) records the configuration information for the recent system environment and working environment configuration information.
Abstract:
A method and an apparatus for controlling handoff through mobility prediction of a mobile terminal are provided to measure change of signal strength to predict previously that the mobile terminal is deviated from a current service zone, thereby performing fast handover processes and preventing frequent handover performance at an inter-network boundary zone. A method for controlling handoff through mobility prediction of a mobile terminal comprises the following steps of: periodically measuring signal strength of the mobile terminal at a current network and a neighboring network, and storing the measured value in a queue before updating the queue so as to maintain at least two latest measured values(S10,S12); periodically calculating an inclination of each signal strength of the current network and the neighboring network by using the signal strength measured values of the current network and the neighboring network stored in the queue, and predicting whether handover is necessary(S14,S16); and if so, instructing a handover command(S18).
Abstract:
본 발명은 무선랜 환경을 이용하여 와이브로 망 환경을 구축하는 방법에 관한 것으로, 보다 상세하게는 두 망간의 전환 기능을 테스트할 수 있도록 무선랜 환경을 와이브로 망 환경에 유사하게 구축하는 방법에 관한 것이다. 본 발명은 (a)상용 무선랜 환경에서의 패킷의 송수신 대역폭을 실제의 와이브로 망 환경에서의 대역폭으로 변경하여 초기화시키는 단계; (b)상기 패킷에 임의적으로 에러를 발생시켜 수신측에 전달하는 단계; 및 (c)상기 수신측에서 상기 에러가 검출되는 경우에는 상기 무선랜 환경의 액세스 포인트(AP)의 신호세기를 상기 와이브로 망 환경에서의 신호세기 값으로 조정하는 단계를 포함하여, 본 발명의 목적 및 기술적 과제를 달성한다.
Abstract:
A root mobile router in a dynamic mobile network and its operation method are provided to utilize a mobile terminal as a mobile router in a situation that a mobile object does not have a function as a mobile router. A network selecting module(411) selects a connection network suitable for a mobile network or determines whether a previously selected connection network has been changed or not. A handover processing module(412) maintains connectivity between each mobile node connected with a mobile router of the mobile network and the Internet through the connection network. A routing protocol module(416) transfers an IP packet generated from the mobile node to the Internet through the connection network. A root mobile router selecting module(415) selects one of a plurality of mobile routers and sets it as a root mobile router. When a central control module(414) receives selected connection network information from the network selecting module(411), it calls the routing protocol module(415) to change the connection network, and when the central control module(414) receives information on a failure of the mobile network, it calls the root mobile router selecting module(415) to change the root mobile router.
Abstract:
A method for constructing a WiBro(Wireless Broadband) network environment by using a wireless LAN(Local Area Network) environment is provided to be capable of constructing a similar wireless communication environment to a WiBro network by using a wireless LAN, thereby testing a network conversion function between the WiBro network and a CDMA(Code Division Multiple Access) network as well as a WiBro wireless communication function. The bandwidth for transceiving packets in a common wireless LAN environment is changed into a bandwidth of a substantial WiBro network environment, and is initialized(S41-S43). An error is randomly generated from the packets to deliver the error to a receiving side(S44). If the error is detected in the receiving side, signal strength of an AP(Access Point) of the wireless LAN environment is controlled so as to become a signal strength value of the WiBro network environment, thus the wireless LAN environment is approximated to the WiBro network environment(S45,S46).
Abstract:
1. 청구범위에 기재된 발명이 속한 기술분야 본 발명은, 휴대 단말기의 하드웨어 추상화 계층 검증 장치 및 그 운용 방법에 관한 것임. 2. 발명이 해결하려고 하는 기술적 과제 본 발명은, 휴대 단말기에서 모바일 표준 플랫폼과 기본 소프트웨어와의 인터페이스 기능을 수행하는 하드웨어 추상화 계층부의 동작 상태를 검증함으로써, 오류 발생시 오류 발원 범위를 특정 계층으로 축소시키기 위한, 휴대 단말기의 하드웨어 추상화 계층 검증 장치 및 그 운용 방법을 제공하는데 그 목적이 있음. 3. 발명의 해결방법의 요지 본 발명은, 휴대 단말기의 하드웨어 추상화 계층 검증 장치에 있어서, 외부의 호스트 검증 시스템으로부터 임의의 테스트케이스를 전송받거나, 상기 테스트케이스의 수행 결과를 상기 호스트 검증 시스템으로 전송하기 위한 통신 수단; 하드웨어 추상화 계층으로부터 이벤트 형태의 테스트케이스의 수행 결과를 수신하기 위한 이벤트 수신 수단; 및 상기 통신 수단을 통해 전송받은 테스트케이스를 수행하도록 상기 하드웨어 추상화 계층을 제어하며, 상기 하드웨어 추상화 계층 또는 상기 이벤트 수신 수단으로부터 전달받은 상기 테스트케이스의 수행 결과를 상기 호스트 검증 시스템으로 전달하도록 상기 통신 수단을 제어하기 위한 제어 수단을 포함함. 4. 발명의 중요한 용도 본 발명은 하드웨어 추상화 계층 검증 등에 이용됨. 휴대 단말기, 하드웨어 추상화 계층 검증, 오류 발원 범위 축소, 호스트 검증 시스템
Abstract:
Disclosed are an adaptive multimedia system for providing multimedia contents and a codec to a user terminal, and a method thereof. The adaptive multimedia system includes: a media server controller that receives profile information from an open codec player of the user terminal, and when a codec for decoding the multimedia contents does not exist in the user terminal, transmits a control message to allow the multimedia contents and the decoding codec to be transmitted together; and at least one transmission frame generator that encodes the multimedia contents through a transcoder and an encoding module according to the control message transmitted from the media server controller, generates a transmission frame including the encoded multimedia contents and the decoding codec, and transmits the generated transmission frame to the open codec player.