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    METHOD AND APPARATUS FOR IMPROVED THROUGHPUT IN A MULTI-NODE COMMUNICATION SYSTEM WITH A SHARED RESOURCE
    1.
    发明专利
    METHOD AND APPARATUS FOR IMPROVED THROUGHPUT IN A MULTI-NODE COMMUNICATION SYSTEM WITH A SHARED RESOURCE 未知

    公开(公告)号：CA2142029C

    公开(公告)日：2001-12-25

    申请号：CA2142029

    申请日：1995-02-07

    Applicant: IBM

    Inventor： GEORGIADIS LEONIDAS ,  GUERIN ROCH A ,  SHAVITT YUVAL Y ,  SLATER ANDREW E ,  CIDON ISRAEL

    IPC: G06F13/00 ,  H04L12/433 ,  H04L12/28

    Abstract: A non-quota access indicator is circulated among nodes in a multi-node quota based communication system with a shared resource, indicating maximum possible non - quota access to the shared resource to a given node receiving same. Upon arrival at a nod e, the indicator is saved and then updated to reflect the current status of that node as either starved or satisfied, the former being a condition of currently having quota remaining and a share d resource access requirement, and the latter being a condition of either currently having no remaining quota or having no current shared resource access requirement. After updating, the no de immediately propagates the indicator to the next node in the system. When a node without quota requires access to the shared resource, it compares its requirement to the last store d indicator and accesses the shared resource if the stored indicator is equal to or greater than the access requirement.

    3.
    发明专利
    未知

    公开(公告)号：DE68926650T2

    公开(公告)日：1997-01-09

    申请号：DE68926650

    申请日：1989-09-28

    Applicant: IBM

    Inventor： CIDON ISRAEL ,  GOPAL INDER SARAT

    IPC: H04L12/433 ,  H04L12/56 ,  H04L12/42 ,  H04L12/64

    Abstract: A method of transmitting high speed (1 Gbits/sec), packetized, integrated voice/data through a communications network. Also included is a fast contention resolution unit for resolving contention among a plurality of adapters for access to a communications network. Included in the fast contention resolution unit is an apparatus for transmitting a token about a ring from one sound to another bypassing intermediate cells whose associated adapters do not have a request to gain access to the communications network.

    4.
    发明专利
    未知

    公开(公告)号：DE69534171D1

    公开(公告)日：2005-06-02

    申请号：DE69534171

    申请日：1995-01-24

    Applicant: IBM

    Inventor： CIDON ISRAEL ,  GEORGIADIS LEONIDAS ,  GUERIN ROCH ANDRE ,  SHAVITT YUVAL YITZCHAK ,  SLATER ANDREW EMLYN

    IPC: G06F13/00 ,  H04L12/433 ,  H04L12/24 ,  H04L12/42 ,  H04L29/00

    Abstract: A non-quota access indicator is circulated among nodes in a multi-node quota based communication system with a shared resource, indicating maximum possible non-quota access to the shared resource to a given node receiving same. Upon arrival at a node, the indicator is saved and then updated to reflect the current status of that node as either starved or satisfied, the former being a condition of currently having quota remaining and a shared resource access requirement, and the latter being a condition of either currently having no remaining quota or having no current shared resource access requirement. After updating, the node immediately propagates the indicator to the next node in the system. When a node without quota requires access to the shared resource, it compares its requirement to the last stored indicator and accesses the shared resource if the stored indicator is equal to or greater than the access requirement.

    8.
    发明专利
    未知

    公开(公告)号：DE69328284D1

    公开(公告)日：2000-05-11

    申请号：DE69328284

    申请日：1993-11-04

    Applicant: IBM

    Inventor： CIDON ISRAEL ,  GOPAL INDER SARAT ,  GUERIN ROCH ANDRE

    IPC: H04Q3/00 ,  H04L12/56 ,  H04Q11/04

    Abstract: A fast bandwidth reservation method and system used in packet-switched networks that reserve bandwidth for a data transfer over links in a path between a source node, at least one intermediate node, and a destination node with minimal latency where the source node desires to send data to the destination node along the specific path using at least a minimum bandwidth and up to a maximum bandwidth. The goal of the method and system is to reserve bandwidth for a data transfer in the minimal amount of time. No link on the path between the source node and destination node has more band-width allocated for the source node than the minimum allocated for the previous forward links on the path. Links on the path between the source node and destination node have their bandwidth allocation for the data transfer adjusted based on the final minimum bandwidth allocated for the data transfer.

    9.
    发明专利
    未知

    公开(公告)号：DE69325957D1

    公开(公告)日：1999-09-16

    申请号：DE69325957

    申请日：1993-05-19

    Applicant: IBM

    Inventor： CIDON ISRAEL ,  DAVENPORT DAVID WILLIAM ,  DERBY JEFFREY HASKELL ,  DUDLEY JOHN GARY ,  GOPAL INDER SARAT ,  JANNIELLO JAMES PATRICK ,  KAPLAN MARC ADAM ,  KOPERDA FRANK RICHARD ,  POTTER KENNETH HARVEY ,  KUTTEN SHAY

    IPC: H04L12/18 ,  H04L12/56

    Abstract: A packet communications system provides for point-to-point packet routing and broadcast packet routing to limited subsets of nodes in the network, using a routing field in the packet header which is processed according to two different protocols. A third protocol is provided in which a packet can be broadcast to the limited subset even when launched from a node which is not a member of the subset. The routing field includes a first portion which contains the route labels necessary to deliver the packet to the broadcast subset. A second portion of the routing field contains the broadcast subset identifier which can then be used to deliver the packet to all of the members of the broadcast subset. Provision is made to backtrack deliver the packet to the last node identified before the broadcast subset if that last node is itself a member of the subset.

    10.
    发明专利
    未知

    公开(公告)号：AT183349T

    公开(公告)日：1999-08-15

    申请号：AT93480059

    申请日：1993-05-19

    Applicant: IBM

    Inventor： CIDON ISRAEL ,  DAVENPORT DAVID WILLIAM ,  DERBY JEFFREY HASKELL ,  DUDLEY JOHN GARY ,  GOPAL INDER SARAT ,  JANNIELLO JAMES PATRICK ,  KAPLAN MARC ADAM ,  KOPERDA FRANK RICHARD ,  POTTER KENNETH HARVEY JR ,  KUTTEN SHAY

    IPC: H04L12/18 ,  H04L12/56

    Abstract: A packet communications system provides for point-to-point packet routing and broadcast packet routing to limited subsets of nodes in the network, using a routing field in the packet header which is processed according to two different protocols. A third protocol is provided in which a packet can be broadcast to the limited subset even when launched from a node which is not a member of the subset. The routing field includes a first portion which contains the route labels necessary to deliver the packet to the broadcast subset. A second portion of the routing field contains the broadcast subset identifier which can then be used to deliver the packet to all of the members of the broadcast subset. Provision is made to backtrack deliver the packet to the last node identified before the broadcast subset if that last node is itself a member of the subset.

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