摘要:
An access point, a layer 2 switch, and multicast handover supporting method using the access point and the layer 2 switch are provided. According to the method of supporting multicast handover, when a mobile node is handed over from one cell to another while being provided with a multicast service in a wireless mobile communication network, the L2 switch performs multicast traffic routing in response to reception of MAC address information and multicast service source and group information from the access point. Hence, multicast traffic can be supported to be fast and seamlessly handed over within layer 2 network equipment.
摘要:
An access point, a layer 2 switch, and multicast handover supporting method using the access point and the layer 2 switch are provided. According to the method of supporting multicast handover, when a mobile node is handed over from one cell to another while being provided with a multicast service in a wireless mobile communication network, the L2 switch performs multicast traffic routing in response to reception of MAC address information and multicast service source and group information from the access point. Hence, multicast traffic can be supported to be fast and seamlessly handed over within layer 2 network equipment.
摘要:
An apparatus and method for virtualizing multiple terminals are provided. The apparatus includes a terminal virtualizer configured to virtualize a group of a plurality of transmitter terminals of a first user and a group of receiver terminals of a second user through the change of source and destination addresses of a packet that is transmitted between the transmitter terminal group and the receiver terminal group so that the transmitter terminal group and the receiver terminal group may be recognized as if they were single terminals. Accordingly, it is possible to provide seamless IP connectivity regardless of which terminal is currently being used by a user.
摘要:
Disclosed are a multicast source registration method, a multicast receiver joining method and a multicast service providing method during handover, in which another mobile node may constantly receive multicast data even when a mobile node performs handover while transmitting multicast data in various mobile networks. According to the present invention, a safe and fast mobility of a network-based multicast source can be provided.
摘要:
A system and method of controlling transmission of adaptive media over handover performed between heterogeneous networks are disclosed. When a mobile terminal moves, it detects the necessity of handover between the heterogeneous networks, determines a target network to which it may perform handover, and transmits handover information to an adaptive media server that controls a transmission rate of adaptive media to previously inform about the handover. Then, the adaptive media adjusts a transmission rate of the adaptive media by using the received handover information, and when the mobile terminal performs handover to the target network, it can receive the adaptive media from the adaptive media server. Accordingly, when the mobile terminal using a real time multimedia service in a wireline/wireless environment in which various accessing techniques are integrated performs handover between heterogeneous networks, a change in quality of experience (QoE) sensed by subscribers due to the handover can be reduced.
摘要:
A lithium secondary battery of the present invention comprises a positive electrode; a negative electrode; a separator interposed between the positive and negative electrodes; and an electrolyte on the separator, wherein the electrolyte includes a non-aqueous organic solvent, a lithium salt, and a linear polymer having P═O bonds. The electrolyte improves the swelling characteristics of lithium secondary batteries. A lithium secondary battery with the electrolyte and a method for preparing the electrolyte and battery is described.
摘要:
A polymer electrolyte has improved leakage resistance and a lithium battery uses the polymer electrolyte. The polymer electrolyte includes a polymerization product of a polymer electrolyte forming composition that includes a multi-functional acrylate based compound, at least one selected from the group consisting of polyalkylene glycol di(meth)acrylates and polyalkylene glycol (meth)acrylates, and an electrolytic solution containing a lithium salt and an organic solvent.