中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

14 records (took 0.016 seconds)

    2.
    发明专利
    未知

    公开(公告)号：AT177890T

    公开(公告)日：1999-04-15

    申请号：AT93480163

    申请日：1993-10-19

    Applicant: IBM

    Inventor： DERBY JEFFREY HASKELL ,  DRAKE JOHN ELLIS JR ,  SANDICK HALDON J ,  DOERINGER WILLIBALD A ,  DYKEMAN DOUGLAS H ,  VU KEN VAN

    IPC: H04L12/56

    Abstract: The process for determining the best communication route from a source end station to a destination end station is distributed over both source and destination network nodes. Network nodes, at the interface between a wide area network (WAN) and each subnetwork, contain access agents to control the communication flow between the wide area network and an end station in the subnetwork. The task of selecting the best route between two end stations is distributed between the access agents at the WAN interface in the first subnetwork, and the access agents at the WAN interface in the second subnetwork. Each access agent at one WAN interface obtains the best route from itself to the end station in its subnetwork. Each access agent at the other WAN interface finds the best route from each access agent at the first WAN interface through itself to the end station in its subnetwork. One designated access agent collects all the best route information. This best route information is concatenated, and the route with the least weight is selected as the best route between end stations.

    DISTRIBUTED MANAGEMENT COMMUNICATIONS NETWORK
    3.
    发明专利
    DISTRIBUTED MANAGEMENT COMMUNICATIONS NETWORK 未知

    公开(公告)号：CA2094410C

    公开(公告)日：1998-05-05

    申请号：CA2094410

    申请日：1993-04-20

    Applicant: IBM

    Inventor： HERVATIC ELIZABETH ANNE ,  KAPLAN MARC ADAM ,  KUTTEN SHAY ,  WARD MICHAEL JAMES ,  PETERS MARCIA LAMBERT ,  GOPAL PRABANDHAM MADAN ,  DRAKE JOHN ELLIS JR ,  AUERBACH JOSHUA SETH

    IPC: H04L12/18 ,  H04L12/24 ,  H04L12/56

    Abstract: A multinode, multicast communications network has a distributed control for the creation, administration and operational mode selection operative in each of the nodes of the network. Each node is provided with a Set Manager for controlling either creation of, administration or access to a set of users to whom a multicast is to be directed. The Set Manager maintains a record of the local membership of all users associated with the node in which the Set Manager resides. A given Set Manager for each designated set of users is assigned the task of being the Set Leader to maintain membership information about the entire set of users in the multicast group. One of the Set Managers in the communications network is designated to be the Registrar which maintains a list of all the Set Leaders in the network. The Registrar insures that there is one and only one Set Leader for each set of users, answers inquiries about the membership of the sets and directs inquiries to appropriate Set Leaders if necessary. All of the set creation, administration and control functions can therefore be carried out by any node of the system and provision is made to assume the function at a new node when failure or partition in the network occurs.

    Distributed management communications network
    4.
    发明专利
    Distributed management communications network 未知

    公开(公告)号：AU3839093A

    公开(公告)日：1993-12-23

    申请号：AU3839093

    申请日：1993-05-06

    Applicant: IBM

    Inventor： AUERBACH JOSHUA SETH ,  DRAKE JOHN ELLIS JR ,  GOPAL PRABANDHAM MADAN ,  HERVATIC ELIZABETH ANNE ,  KAPLAN MARC ADAM ,  KUTTEN SHAY ,  PETERS MARCIA LAMBERT ,  WARD MICHAEL JAMES

    IPC: H04L12/18 ,  H04L12/24 ,  H04L12/56 ,  G06F15/16

    Abstract: A multinode, multicast communications network has a distributed control for the creation, administration and operational mode selection operative in each of the nodes of the network. Each node is provided with a Set Manager for controlling either creation of, administration or access to a set of users to whom a multicast is to be directed. The Set Manager maintains a record of the local membership of all users associated with the node in which the Set Manager resides. A given Set Manager for each designated set of users is assigned the task of being the Set Leader to maintain membership information about the entire set of users in the multicast group. One of the Set Managers in the communications network is designated to be the Registrar which maintains a list of all the Set Leaders in the network. The Registrar insures that there is one and only one Set Leader for each set of users, answers inquiries about the membership of the sets and directs inquiries to appropriate Set Leaders if necessary. All of the set creation, administration and control functions can therefore be carried out by any node of the system and provision is made to assume the function at a new node when failure or partition in the network occurs.

    MULTICAST COMMUNICATION TREE CREATION AND CONTROL METHOD AND APPARATUS
    6.
    发明专利
    MULTICAST COMMUNICATION TREE CREATION AND CONTROL METHOD AND APPARATUS 未知

    公开(公告)号：CA2094409C

    公开(公告)日：1998-07-14

    申请号：CA2094409

    申请日：1993-04-20

    Applicant: IBM

    Inventor： AUERBACH JOSHUA SETH ,  CHOW CHEE-SENG ,  DRAKE JOHN ELLIS JR ,  GOPAL PRABANDHAM MADAN ,  HERVATIC ELIZABETH ANNE ,  KAPLAN MARC ADAM ,  PETERS MARCIA LAMBERT ,  WARD MICHAEL JAMES

    IPC: H04L12/18 ,  H04L12/24 ,  H04L12/56

    Abstract: In a multicast network communication system, administration of the communication path making up the multicast tree itself has been separated from control and administration of the network. Creation of a multicast distribution tree and control over the membership thereof, is separately controlled independently from the creation and use of the tree transmission path used to communicate among the members of a multicast set. Transmission distribution trees are set up when a transmission request is received and the properties of the transmission path that is required are known. Transmission paths are created and controlled by all nodes in the communications system, each node having necessary control code and processors for responding to requests from set members to transmit a message to groups of users by creating and activating the necessary tree communication path distribution linkages. A distribution tree is created by the Tree Leader by generating a tree address using a random number generator. A tree address correlator is generated utilizing network and node identifiers unique for the network, and a list of subnodes or users connected for each member of the multicast tree set is generated. Using this information, a tree distribution path is computed to cover all of the subnodes required and a tree set up request message is sent by the Tree Leader along a computed path to each involved subnode. Each subnode returns a message indicating whether the tree address is already in use or is available for use. Successfully negotiated tree addresses are marked at the path link initiation and termination points at each node through the network.

    7.
    发明专利
    未知

    公开(公告)号：BR9304797A

    公开(公告)日：1994-05-31

    申请号：BR9304797

    申请日：1993-11-23

    Applicant: IBM

    Inventor： DERBY JEFFREY H ,  DOERINGER WILLIBALD A ,  DRAKE JOHN ELLIS JR ,  DYKEMAN DOUGLAS H ,  SANDICK HALDON J ,  VU KEN VAN

    IPC: H04L12/56 ,  G06F15/20

    Abstract: The process for determining the best communication route from a source end station to a destination end station is distributed over both source and destination network nodes. Network nodes, at the interface between a wide area network (WAN) and each subnetwork, contain access agents to control the communication flow between the wide area network and an end station in the subnetwork. The task of selecting the best route between two end stations is distributed between the access agents at the WAN interface in the first subnetwork, and the access agents at the WAN interface in the second subnetwork. Each access agent at one WAN interface obtains the best route from itself to the end station in its subnetwork. Each access agent at the other WAN interface finds the best route from each access agent at the first WAN interface through itself to the end station in its subnetwork. One designated access agent collects all the best route information. This best route information is concatenated, and the route with the least weight is selected as the best route between end stations.

    10.
    发明专利
    未知

    公开(公告)号：AT186803T

    公开(公告)日：1999-12-15

    申请号：AT93480060

    申请日：1993-05-19

    Applicant: IBM

    Inventor： AUERBACH JOSHUA SETH ,  CHOW CHEE-SENG ,  PETERS MARCIA LAMBERT ,  DRAKE JOHN ELLIS JR ,  GOPAL PRABANDHAM MADAN ,  HERVATIC ELIZABETH ANNE ,  KAPLAN MARC ADAM

    IPC: H04L12/18 ,  H04L12/24

    Abstract: In a multicast network communication system, administration of the communication path making up the multicast tree itself has been separated from control and administration of the network. Creation of a multicast distribution tree and control over the membership thereof, is separately controlled independently from the creation and use of the tree transmission path used to communicate among the members of a multicast set. Transmission distribution trees are set up when a transmission request is received and the properties of the transmission path that is required are known. Transmission paths are created and controlled by all nodes in the communications system, each node having necessary control code and processors for responding to requests from set members to transmit a message to groups of users by creating and activating the necessary tree communication path distribution linkages. A distribution tree is created by the Tree Leader by generating a tree address using a random number generator. A tree address correlator is generated utilizing network and node identifiers unique for the network, and a list of subnodes or users connected for each member of the multicast tree set is generated. Using this information, a tree distribution path is computed to cover all of the subnodes required and a tree set up request message is sent by the Tree Leader along a computed path to each involved subnode. Each subnode returns a message indicating whether the tree address is already in use or is available for use. Successfully negotiated tree addresses are marked at the path link initiation and termination points at each node through the network.

Patent Agency Ranking