摘要:
A system and method in a mobile network in which a first router manages a first subnet including at least one second router and the at least one second router manages a second subnet including at least one mobile node. In a method for recovering a routing path between the first router and the at least one mobile node, the first router receives, from the at least one second router, information of neighboring routers included in the first subnet, and stores the received neighboring router information. An occurrence of routing path failure is recognized when a periodic report message is not received from the at least one second router within a preset time. An alternative router is selected from among the neighboring routers when the failure occurrence is recognized, and a routing path recovery request is sent to the alternative router. Data is routed to the at least one mobile node through the alternative router when the alternative router positively responds to the routing path recovery request.
摘要:
A route optimization system and method for packet transmission between particular nodes in a mobile network including a plurality of nodes. If a predetermined mobile router (MR) receives a packet transmitted from a predetermined mobile node (MN) connected to its subnet, the MR transmits the packet to its associated home agent (HA) through a previously established default tunnel. Upon receiving the packet, the HA adds registration information of the MR to the packet and transmits the registration information-added packet to a correspondent router (CR) of a correspondent node (CN) for which the packet is destined. The CR acquires registration information of the MR from the received packet, and forms a route-optimized tunnel for packet transmission to the MR according to the acquired information.
摘要:
A method for optimizing a tunnel between a second mobile router and a home agent of the second mobile router in a mobile network having a nested structure in which a first mobile router manages a subnetwork including at least the second mobile router. The second mobile router manages a subnetwork including at least one node. The second mobile router receives nested path information from the first mobile router. The second mobile router transmits the nested path information to the home agent of the second mobile router via the first mobile router. The home agent of the second mobile router stores the nested path information received from the second mobile router thereby performing tunneling with the second mobile router.
摘要:
A P2P network system for reducing streaming delay in a peer-to-peer (P2P) network is provided. The P2P network system may include at least one peer, a seed server, and a tracker server that manages the network. The seed server provides content to the at least one peer. The peer, the seed server, and the tracker server operate such that the P2P network is managed based on the distance of each peer from the seed server.
摘要:
An apparatus and a method for managing a push service used by an application, and a recording medium storing a program source for the method which includes, when there is a request for use of a push service from an application installed in a mobile station, determining whether another application using the push service exists, determining a message type of a message to be transmitted to a push server to make a push service registration request depending on the determination of another application using the push service, and configuring a message for a push service registration request according to a determined message type and transmitting the configured message to the push server.
摘要:
A P2P network system for reducing streaming delay in a peer-to-peer (P2P) network is provided. The P2P network system may include at least one peer, a seed server, and a tracker server that manages the network. The seed server provides content to the at least one peer. The peer, the seed server, and the tracker server operate such that the P2P network is managed based on the distance of each peer from the seed server.
摘要:
An apparatus and method for recognizing an indoor zone in which a user is located by using an Earth's magnetic field that is generated naturally instead of the conventional method of combining a magnetic field generator and a magnetic field sensor. The apparatus includes a zone evaluator configured to primarily recognize a location of the portable terminal by using first and second components of an Earth's magnetic field and to finally recognize the location of the portable terminal by using first and second images.
摘要:
An apparatus and method are provided for transmitting and receiving Internet Protocol (IP) information in a wireless communication network. The IP information transmission apparatus includes a memory that stores IP information of at least one mobile terminal included in a group of mobile terminals for short-range wireless communication, and a controller that receives an IP information request message requesting the IP information of the at least one mobile terminal included in the group, generates the IP information of the at least one mobile terminal included in the group based on the stored IP information, and transmits the generated IP information.
摘要:
A concentration cooling apparatus for a refrigerator includes a housing which is mounted in a cold air guiding path, and a nozzle which is rotatably supported in the housing, for concentratedly injecting cold air to a region where a high temperature load is generated when the high temperature load is generated in a predetermined region inside a cooling chamber. An infrared sensor is mounted at the front of the nozzle, for sensing the region where the high temperature load is generated. The sensor rotates together with the nozzle and a frost drying sensor is installed on the upper surface of the nozzle, for drying frost on the surface of the infrared sensor. Thus, the reliability of the infrared sensor can be improved by preventing the formation of frost on the surface of the lens of the infrared sensor which detects whether the high temperature load is generated.
摘要:
Provided is an apparatus and method for providing an adaptive streaming service based on a Moving Picture Experts Group (MPEG) file in a data communication network. An MPEG file format defined to support an adaptive streaming service between a server and a client is processed to support an adaptive streaming service between a client and a client. An MPEG file format for a particular message used in a procedure for the adaptive streaming service between the server and the client and a procedure for the adaptive streaming service between the clients is newly defined. In particular, as to the newly defined MPEG file format, necessary information for supporting the adaptive streaming service between clients is defined. As the MPEG file format, both a Transport Stream file format defined in MPEG-2 and MPEG-4 transport standards are considered.