Abstract: A method, medium, and system for reserving resources in a mobile network. A mobile node reports a start of a handover to a present access router if the handover of the mobile node occurs, and the previous access router transmits specified session information to a candidate access router that has a possibility handling the mobile node's handover. A candidate crossover router, which performs a resource reservation work on a new path and a resource release on the previous path, is searched, and a localized resource reservation is established by exchanging a specified resource reservation message before the handover is completed if the candidate crossover router is determined. Accordingly, duplication of resources can be prevented, and a prompt resource reservation can be achieved during the handover.

Abstract: A resource reservation system and method in a multihoming environment are disclosed. The method includes: transmitting query messages from the mobile node to multiple adjacent access routers using a plurality of care of addresses (CoAs) stored in the mobile node; transmitting the query messages from the adjacent access routers to a crossover node; at one or more intermediate nodes on a communication path between the adjacent access routers and the crossover node, recording available resource information in the query messages; receiving the query messages at a predetermined correspondent node; analyzing, at the correspondent node, the recorded available resource information in the received query messages and selecting a communication path which transferred a query message containing available resource information indicating the available resources required by the mobile node; and transmitting a resource reservation message from the correspondent node to the mobile node through the selected communication path.

Abstract: An end-to-end quality-of-service (QoS) interoperation apparatus and method in a heterogeneous network environment are provided. A Next Steps In Signaling (NSIS) Application Programming Interface (NAPI) block handles an NSIS API at the request of an upper layer. An NSIS entity handles an NSIS protocol stack at the request of the NAPI block. An Internet Protocol Bearer Service (IP BS) manager manages an IP BS. A translation block translates parameters of a 3GPP_CLASS object and a UMTS QoS class predefined in an NSIS message according to a predetermined mapping configuration. A memory stores a software application including a Universal Mobile Telecommunication System Bearer Service (UMTS BS) manager for managing a UMTS BS. A processor combined with the memory, controls the software application.

Abstract: A method, medium, and system for reserving resources in a mobile network. A mobile node reports a start of a handover to a present access router if the handover of the mobile node occurs, and the previous access router transmits specified session information to a candidate access router that has a possibility handling the mobile node's handover. A candidate crossover router, which performs a resource reservation work on a new path and a resource release on the previous path, is searched, and a localized resource reservation is established by exchanging a specified resource reservation message before the handover is completed if the candidate crossover router is determined. Accordingly, duplication of resources can be prevented, and a prompt resource reservation can be achieved during the handover.

Abstract: A resource reservation system and a method for managing resources under consideration of the mobility of an MN are provided where an old refresh interval for an old resource reservation state is changed in response to handoff. The changed refresh interval propagates through at least one of a path supporting a corresponding session before the handoff and a path newly established due to handoff occurrence. When the handoff is completed, resources are released on a path, which is a part of the path supporting the corresponding session before the handoff and is not used due to the handoff occurrence, based on the changed refresh interval.

Abstract: A method of signaling quality of service information in response to a handover from a first access network to a second access network in an Internet Protocol (IP) based mobile network environment, the method comprising: transmitting a resource reservation message from a mobile node to the second access network; transmitting the resource reservation message to an IP-based core network from the second access network; and transmitting a resource reservation confirm message to the mobile node.

Abstract: A queue management method of an access network device includes receiving a packet, determining feasibility of a packet transmission within a delivery deadline allowed from a destination if the received packet is for real-time transmission, storing the packet in the transmission queue and transmitting the packet in sequential order of the storage when the packet transmission within the delivery deadline is feasible, and dropping the packet instead of storing the packet in the transmission queue when the packet transmission is determined infeasible. Accordingly, resources required for the packet transmission are saved.

Abstract: A method, medium, and system for reserving resources in a mobile network. A mobile node reports a start of a handover to a present access router if the handover of the mobile node occurs, and the previous access router transmits specified session information to a candidate access router that has a possibility handling the mobile node's handover. A candidate crossover router, which performs a resource reservation work on a new path and a resource release on the previous path, is searched, and a localized resource reservation is established by exchanging a specified resource reservation message before the handover is completed if the candidate crossover router is determined. Accordingly, duplication of resources can be prevented, and a prompt resource reservation can be achieved during the handover.

Abstract: A resource reservation system and a method for managing resources under consideration of the mobility of an MN are provided where an old refresh interval for an old resource reservation state is changed in response to handoff. The changed refresh interval propagates through at least one of a path supporting a corresponding session before the handoff and a path newly established due to handoff occurrence. When the handoff is completed, resources are released on a path, which is a part of the path supporting the corresponding session before the handoff and is not used due to the handoff occurrence, based on the changed refresh interval.

Abstract: A system and method for reserving resources for a Mobile Node (MN) having a plurality of wireless network interfaces in a mobile network under a multi-homed environment are provided, wherein the MN transmits query messages requesting a path be setup to a plurality of Access Routers (ARs) accessible through the wireless network interfaces, a Crossover Router Node (CRN), shared by a plurality of paths running to a CN via the ARs, selects an optimal path from among the plurality of paths using the path information set in the query messages propagated through the plurality of paths, the CRN transmits the resource reserve message through the selected optimal path, and the routers existing in the optimal path reserve resources according to the resource reserve message.

Abstract: An apparatus and method for performing tunnel signaling over an IP tunneling path are provided. The method includes transmitting an end-to-end signaling flow through an end-to-end path connected to the IP tunneling path, generating a tunnel signaling flow corresponding to the end-to-end signaling flow, and transmitting the generated tunnel signaling flow through the IP tunneling path, wherein the end-to-end signaling flow and the tunnel signaling flow respectively include a binding data object storing binding information for an end-to-end session associated with the end-to-end signaling flow or a tunnel session associated with the tunnel signaling flow.

Abstract: A method and apparatus for performing tunneling signaling over an IP tunneling path connected to an end-to-end path on an IP network are provided, in which an end-to-end signaling flow is received from a sender or a receiver on the end-to-end path, a tunnel signaling flow is generated corresponding to the received end-to-end signaling flow, and the generated tunnel signaling flow is transmitted through the IP tunneling path, the end-to-end signaling flow is forwarded between an entry node and an exit node of the IP tunneling path, and the forwarded end-to-end signaling flow is transmitted to at least any one node on the end-to-end path, wherein the forwarding is simultaneously performed with the transmitting of the tunnel signaling flow, and the transmitting of the end-to-end signaling flow is suspended until the transmitting of the tunnel signaling flow is completed.

Abstract: A method and apparatus for performing tunnel signaling over an IP tunneling path connected to an end-to-end path of an IP network where an end-to-end signaling flow from one of a sender and a receiver of the end-to-end path is received, a tunnel signaling flow associated with the IP tunneling path in response to the received end-to-end signaling flow is generated, and the generated tunnel signaling is transmitted.

Abstract: An end-to-end quality-of-service (QoS) interoperation apparatus and method in a heterogeneous network environment are provided. A Next Steps In Signaling (NSIS) Application Programming Interface (NAPI) block handles an NSIS API at the request of an upper layer. An NSIS entity handles an NSIS protocol stack at the request of the NAPI block. An Internet Protocol Bearer Service (IP BS) manager manages an IP BS. A translation block translates parameters of a 3GPP_CLASS object and a UMTS QoS class predefined in an NSIS message according to a predetermined mapping configuration. A memory stores a software application including a Universal Mobile Telecommunication System Bearer Service (UMTS BS) manager for managing a UMTS BS. A processor combined with the memory, controls the software application.

Abstract: A method of signaling quality of service information in response to a handover from a first access network to a second access network in an Internet Protocol (IP) based mobile network environment, the method comprising: transmitting a resource reservation message from a mobile node to the second access network; transmitting the resource reservation message to an IP-based core network from the second access network; and transmitting a resource reservation confirm message to the mobile node.

Abstract: A resource reservation system and method in a multihoming environment are disclosed. The method includes: transmitting query messages from the mobile node to multiple adjacent access routers using a plurality of care of addresses (CoAs) stored in the mobile node; transmitting the query messages from the adjacent access routers to a crossover node; at one or more intermediate nodes on a communication path between the adjacent access routers and the crossover node, recording available resource information in the query messages; receiving the query messages at a predetermined correspondent node; analyzing, at the correspondent node, the recorded available resource information in the received query messages and selecting a communication path which transferred a query message containing available resource information indicating the available resources required by the mobile node; and transmitting a resource reservation message from the correspondent node to the mobile node through the selected communication path.

Abstract: A queue management method of an access network device includes receiving a packet, determining feasibility of a packet transmission within a delivery deadline allowed from a destination if the received packet is for real-time transmission, storing the packet in the transmission queue and transmitting the packet in sequential order of the storage when the packet transmission within the delivery deadline is feasible, and dropping the packet instead of storing the packet in the transmission queue when the packet transmission is determined infeasible. Accordingly, resources required for the packet transmission are saved.

Abstract: A method, medium, and system for reserving resources in a mobile network. A mobile node reports a start of a handover to a present access router if the handover of the mobile node occurs, and the previous access router transmits specified session information to a candidate access router that has a possibility handling the mobile node's handover. A candidate crossover router, which performs a resource reservation work on a new path and a resource release on the previous path, is searched, and a localized resource reservation is established by exchanging a specified resource reservation message before the handover is completed if the candidate crossover router is determined. Accordingly, duplication of resources can be prevented, and a prompt resource reservation can be achieved during the handover.

Abstract: A resource reservation system for mobile network environments having a mobile node, routers for intermediating communications between the mobile node and a correspondent node belonging to another network, and neighboring routers geographically adjacent to the router, includes a manager for sending a path request message for establishing a new path to the neighboring routers if a fast resource reservation and release (FREE) initiation message is received from the mobile node if the mobile node as a receiver performs a handoff. If the mobile node enters a communication range of any of the neighboring routers, the manager establishes a new path between the mobile node and the manager through the neighboring router for the communication range according to the sent path request message. Accordingly, the manager performs establishment of a new RSVP path and release of a previous RSVP path at the same time to prevent double resource reservation occasions.

Abstract: In an edge router controlling traffic flows using a buffer in a network handling both real-time traffic and data application traffic, a buffer management-based transmission includes receiving a packet from the network and deciding whether the received packet is a choke packet. If the received packet is not the choke packet, then the received packet is classified into a predetermined traffic class. The buffer is divided logically, and a buffer area of the logically divided buffer is assigned to the traffic class into which the received packet is classified. Control of transmission of the received packet includes either dropping the received packet or storing the received packet in the buffer area assigned to the classified traffic class. Accordingly, the present invention can continuously guarantee appropriate bandwidth required for real-time traffic and, at the same time, prevent a situation in which no bandwidth is assigned to data application traffic.