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6421321 |
Apparatus and a method for transferring a packet flow in a communication network
An apparatus and a method for transferring a packet flow having a plurality of packets in a communication network which includes plural subnetworks, first and second end systems connected to the...
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6411603 |
Method and apparatus for pricing links/paths based on a requested amount of bandwidth wherein links can be load balanced by varying their costs
In a communications arrangement where services requested by users are provided over a network, communication flow arising from the services are shared by multiple links in the network. The users...
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6400692 |
Method for transmitting data in a wireless modem network
A method for transmitting data in a wireless modem network including a plurality of wireless modems is disclosed herein. The method mentioned above includes the following steps. First, classify the...
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6396814 |
Network construction method and communication system for communicating between different groups via representative device of each group
A communication network construction method comprises the steps of grouping the communication devices belonging to a communication network into one or a plurality of communication groups. In a...
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6385172 |
Administrative weight assignment for enhanced network operation
Methods and communication networks having a plurality of connection-oriented switches in which administrative weights are assigned based on link call blocking probabilities. Three assignment...
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6381459 |
Mobile communication system, method and alternative network gateway unit for processing a call
A system for processing a call between a mobile services switching centre (MSC) and a gateway mobile switching centre (GMSC) includes a first alternative gateway unit (ANG) being connected to the...
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6377551 |
QoS based route determination method for communications networks
A method is described for route computation in Communications Networks with multiple QoS metrics. This method takes a metric (say, cost) as an optimization target and the other metric (say, delay)...
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6366559 |
Method and system for state-dependent admission control and routing of multi-rate circuit-switched traffic
A method and system for routing multi-rate traffic in a communications network determines a first expected admission cost difference that corresponds to admission of the traffic onto a single-link...
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6366560 |
Route selection service control system
A route selection service control system for selecting an optimum one of routes connecting an originating-side terminal to each of terminals owned by an identical subscriber and connected to...
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6363319 |
Constraint-based route selection using biased cost
The present invention is a method and apparatus for selecting a route for a flow from a plurality of network paths connecting a source to a destination. The method comprises: (a) determining...
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6349091 |
Method and apparatus for controlling communication links between network nodes to reduce communication protocol overhead traffic
Link-State Advertisement (LSA) and other routing control packets are transmitted within a wireless communication system or network via selective enablement of control links for transference of the...
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6349090 |
Traffic routing in a telecommunications network
In a telecommunications network comprising a plurality of nodes (N 1 , N 2 . . . ) interconnected by communications links (L 1 , L 2 . . . ) each incorporating one or more communications channels,...
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6348874 |
Power distribution to nodes in a distributed system
A system in which remote nodes are supplied with electrical power using existing network communication links. A communication device in a system according to the present techniques routes...
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6347078 |
Multiple path routing
A novel data structure in a router helps to compute viable next hops for forwarding a data packet from a router to its destination along multiple alternate loop-free paths, which are not...
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6339586 |
Internet protocol switch having input cell buffers
In an internet protocol switch including a controller and a switch section controlled by the controller, the switch section includes an input cell buffer for receiving cells input to the switch...
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6333918 |
Method of forming routing data
Switching nodes of a communications network are assigned subnetworks and are interconnected to one another in any desired fashion. Stored in a source switching node is at least topology information...
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6331986 |
Method for resource allocation and routing in multi-service virtual private networks
We describe a method for solving the joint problem of optimal routing and optimal bandwidth allocation in a network that supports plural subnetworks and plural communication services. Our method...
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6320847 |
Method and apparatus for reduction of call setup time using anticipation technique for multimedia applications in widely distributed networks
In a widely distributed digital communication network call delays and eventual outcome are anticipated (i.e., expected call outcome) at the initiation of a call at an originating terminal and the...
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6314092 |
Routing in a communications network
A path between a selected first node and a selected second node is identified in a telecommunications network. A system cost is estimated for making a connection between the first node and the...
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6311054 |
Method to determine charging information in a mobile telecommunications system and a mobile station
A method and system to determine charging information in a mobile communications system comprising one or more mobile stations and a mobile telecommunications network wherein the system collects...
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6304547 |
Communication network system and controlling of communication path therefor
In case of a trouble in any unit network of a communications network system which comprises a plurality of unit networks, communications are relieved and reliability of communications is improved....
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6304556 |
Routing and mobility management protocols for ad-hoc networks
Two network communication protocols, one for routing and one for mobility management, are presented that are particularly suited for use with ad-hoc networks. The routing protocol is a...
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6301244 |
QoS-oriented one-to-all route selection method for communication networks
A method is described for one-to-all route selection in Communications Networks with multiple QoS metrics. This method takes a first metric (say, delay) as a constraint and a second metric (say,...
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6295275 |
Dynamic route generation for real-time network restoration using pre-plan route generation methodology
A restoral route generation process combines elements of a pre-plan methodology with a dynamic route generation methodology. The resulting hybrid approach quickly produces a restoral route in real...
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6282170 |
Network restoration routing optimization
Following failure of part of the network, a restoration process is carried out. A restoration route around the failed part is selected, and at least a portion of the capacity of links along the...
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6278693 |
Communications systems with quality of service parameters
A communications system may be used for transmitting and/or receiving data over a network. The communications system includes means responsive to requests for a desired quality of service...
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6266706 |
Fast routing lookup system using complete prefix tree, bit vector, and pointers in a routing table for determining where to route IP datagrams
In a method of IP routing lookup in a routing table, comprising entries of arbitrary length prefixes with associated next-hop information in a next-hop table, to determine where IP datagrams are to...
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6259673 |
Route selection method
If an error range is specified with regard to the cost beforehand, a route satisfying all of a plurality of QoS conditions at a low cost and having a cost in the error range is selected as an...
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6246669 |
Method and system for optimizing connection set-up operations in a high speed digital network
In a high speed digital network including access nodes and network nodes each having topology data bases, a method for optimizing the connection set-up operations required for connecting a calling...
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6240463 |
Router placement methods and apparatus for designing IP networks with performance guarantees
Methods and apparatus are provided for designing IP networks with substantially improved performance as compared to existing IP networks such as, for example, those networks designed under...
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6240462 |
System for providing enhanced grade of service for connections over a large network
We have realized that for a connection over a large data network, such as an Internet connection that couples a web access device to a terminal server connected to an applications server, delays...
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6236642 |
Apparatus and method for network resource preservation
A data routing system for dynamically optimizing bandwidth which includes a network control unit, a route comparator, a reroute control unit and a packet reordering unit. The network control unit...
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6233613 |
High impedance probe for monitoring fast ethernet LAN links
A high impedance tap for monitoring traffic over a communication link of a fast Ethernet local area network (LAN). The circuit of the present invention is advantageously used for tapping into a...
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6212184 |
Fast scaleable methods and devices for layer four switching
Fast, scalable methods and devices are provided for layer four switching in a router as might be found in the Internet. In a first method, a grid of tries, which are binary branching trees, is...
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6201793 |
Packet delay estimation in high speed packet switches
An improved packet delay estimation method results from an indirect measurement method that employs an estimation method based on sampled lengths of queues and measured traffic. A complex system of...
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6201810 |
High-speed routing control system
In a high-speed routing control system, plural path candidates each leading to a destination node are selected on the basis of physical connection information of links connecting respective nodes...
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6198752 |
ATM video telephone terminal interworking with ISDN
An ATM video telephone terminal interworking with ISDN is provided for circuit switching network emulation on AAL-5 for a video telephone service. The ATM video telephone terminal includes a...
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6195333 |
Unframed isochronous shaping method to reduce delay and delay variation in a CBR transmission system
Flow shaping is executed at each ATM device in a virtual circuit formed in an ATM network. More particularly, the flow of data units through the virtual circuit is controlled at each ATM switch...
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6195336 |
Comparative path replacement
A method and apparatus for finding a better path through an integrated services digital network (ISDN) involves collecting a first data set about the current path and a second data set about a...
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6195699 |
Real-time scheduler method and apparatus
A real-time scheduler for scheduling periodic access to a shared resource by a number of channels. The channel period for each channel is represented by a channel value partitioned into an...
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6192043 |
Method of caching routes in asynchronous transfer mode PNNI networks
A caching method to greatly reduce the time to calculate routes based on the well known Dijkstra routing algorithm. A first embodiment is suitable for use in applications where only a single class...
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6192404 |
Determination of distance between nodes in a computer network
A base node of a computer network sends concurrent TTL query messages using multicast to other receiving nodes of the computer network. Each of the TTL query messages has a different time-to-live...
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6189035 |
Method for protecting a network from data packet overload
An internal network (16) is protected from being overloaded by an excessive number of data packets that originate from a source in an external network (10). In a preferred embodiment, data packet...
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6189044 |
Dynamic routing method for packet switched satellite communications
A method of routing data packets in a communication network having one or more intelligent routing nodes. Each routing node maintains routing and address resolution information for all nodes within...
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6185193 |
Designing system and method for computer-aided access communication networks
An access communication network to make possible automatic designing a lower cost access communication network under various constraints by using existing equipment on the basis of demand...
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6173176 |
Method for sector-based routing
A communication system (10) has multiple satellites (20) communicating with ground stations (30) and with base stations (40). The satellites (20) are in non-geosynchronous orbit around the earth...
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6151305 |
Method and apparatus for planning an ATM network for an area of concentrated demand for transport bandwidth
A method and apparatus for ATM network planning is described. ATM network planning involves designing an ATM network to support traffic demands, which may include voice, data, image and video...
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6147971 |
Optimized routing method based on minimal hop count for use in PNNI based asynchronous transfer mode networks
Two solutions are provided for optimizing the algorithm used by the local node in calculating the route to a destination node. A first method optimizes the route calculation by associating a...
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6144643 |
Technique for discriminating presence of talking path in lattice communication network control system
A technique for reducing the computational complexity for discriminating the existence of a communication path in a lattice communication network control system includes the steps of: checking for...
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6141325 |
Paradigm for enabling interoperability between different subnetworks
The invention provides a method for improving network routing calculations for routing data packets or connections between two points in a network through many incompatible sub-networks. Each node...
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