Abstract:
본발명은 6LoWPAN 기반의센서노드들로구성된센서네트워크에서 MANEMO를적용하여단말들간에최적화된경로를설정한후 상기최적화된경로로패킷을송수신할수 있는방법에관한것이다. 이로써, 6LoWPAN 기반 MANEMO 환경에서 6LoWPAN 이동네트워크단말(MNN)과대응단말(CN) 간의패킷전송경로를최적화할수 있다. 또한, 6LoWPAN 이동라우터간에 Ad-hoc 네트워크를형성하여직접적인통신이가능하도록네트워크를구성함으로써 NEMO 환경에서의터널링오버헤드문제를줄이고, 통신경로를최적화함으로써패킷전송지연을최소화할수 있다.
Abstract:
PURPOSE: A method and an apparatus for transmitting and receiving streaming data based on a real-time streaming protocol sessions are provided to improve a QoS(Quality of Service) of streaming by receiving a thumbnail frame related to streaming data at high speed. CONSTITUTION: A server(120) transmits streaming data through a RTSP(Real-Time Streaming Protocol) session to a client(110) at the same speed as the reproduction speed of the streaming data, wherein the streaming data is related to a single content. The transmission speed of streamlining data can be enhanced by using multiple RTSP sessions.
Abstract:
PURPOSE: A method for supporting communication route optimization in a 6LoWPAN based MANEMO(Mobile Ad-hoc for NEMO) environment is provided to optimize a communication route, thereby minimizing packet transmission delay. CONSTITUTION: Mobile routers(816,818,820,822) transmit an RS(Router Solicitation) message for a registration request about a moved wireless network to a gateway(814). The gateway obtains an address of the mobile router from the RS message. The gateway assigns a new address to the mobile router. The gateway transmits an RA(Router Advertisement) message to the mobile router. The mobile router obtains assigned address information and gateway address information from the RA message.
Abstract translation:目的:提供一种支持基于6LoWPAN的MANEMO(Mobile Ad-hoc for NEMO)环境中的通信路由优化的方法,以优化通信路由,从而最小化分组传输延迟。 规定:移动路由器(816,818,820,822)向网关(814)发送关于移动的无线网络的注册请求的RS(路由器请求)消息。 网关从RS消息获取移动路由器的地址。 网关为移动路由器分配一个新的地址。 网关向移动路由器发送RA(路由器通告)消息。 移动路由器从RA消息获取分配的地址信息和网关地址信息。
Abstract:
A mobility supporting method of a sensor node and a system thereof in 6LoWPAN is provided to apply proxy mobile IPv6 to 6LoWPAN environment of a multi hop environment supplying the mobility of the mobile sensor node connected by one hop unit. A sensor node(405b) recognizing an access of a mobile sensor node(400) in a proxy mobile 6LoWPAN informs the coordinator of the access of the movement sensor node. Information requested from the AAA server is received by requesting the information of the mobile sensor node to the AAA server through IPv6. The coordinator transmits the information of the movement sensor node.
Abstract:
PURPOSE: A jitter correcting method and apparatus thereof are provided to accurately calculate jitter information generated in a real network by eliminating inexactitude of jitter information created in a bit stream transmission. CONSTITUTION: A time stamp of a video frame is determined(431). A transmission time of an RTP packet including one or more payloads of the video frame is determined(433). The RTP packet including the time stamp and the transmission time is created(435). The RTP packet is transmitted to a reception apparatus(440). A default header includes the time stamp. An extension header includes the transmission time.
Abstract:
PURPOSE: A packet routing method and a device is provided to prevent an error committing GPSR(Greed Parameter Stateless Routing) when temporarily link is sectioned, thereby increasing processing ratio of a network and preventing a delay. CONSTITUTION: A packet transceiver(10) transcevies a packet. A memory(30) stores a neighboring node table and standard value. A routing controller(20) updates the neighboring node table by periodically calculating a link stability about each neighboring node. If oneself is not a destination node of the received packet, the routing controller grasps neighboring node which is nearer to the destination node. If the link stability of neighboring node is over standard value, the routing controller transmits the packet to the neighboring node.
Abstract:
An apparatus and a method for generating a cryptographic key and an integrity key in a communication system are provided to implement a high speed key by generating an integrity key and a cryptographic key based on a twice kasumi calculation of a kasumi unit and parameters. An apparatus for generating a cryptographic key and an integrity key in a communication system includes a sub key separation unit(10), a selection unit(20), a kasumi unit(30), and a key data generation unit(40). The sub key separation unit performs a logical operation for subscriber key data and random input data of the same input bit and separates the calculated data into two sub keys. The selection unit selects one sub key according to a sort of key to be generated. The kasumi unit generates kasumi calculation data of a predetermined bit through the selected sub key and the subscriber key. The key data generation unit performs a logical operation for the subscriber key and the generated kasumi calculation data, and generates a cryptographic key and an integrity key of a predetermined bit through the calculated data by the logical operation.