ATM-lan system using broadcast channel for transferring link setting and chaining requests
First Claim
Patent Images
1. An ATM-LAN system comprising:
- a plurality of nodes each having assigned thereto a globally unique identifier;
a plurality of terminals connected by said plurality of nodes with communication among said terminals being effected in asynchronous transfer mode, each of said terminals having assigned thereto a globally unique identifier and processing and sending out broadcast cells;
connection setting process means incorporated in at least one of said terminals, for transmitting a link setting request for setting links of virtual paths or virtual channels, and also a link chaining request for connecting the links;
a broadcast channel for connecting all of said nodes in said ATM-LAN system and said terminals therein and for transferring a message from said connection setting process means to said nodes, said message containing the link setting request, the link chaining request, and the globally unique identifier as a part of the destination address; and
node setting process means incorporated in each of said nodes, for receiving the link setting request, the link chaining request and the globally unique identifier from said broadcast channel, for recognizing said terminals on the basis of the globally unique identifier, and for setting and connecting said links in accordance with the link setting request and the linking chaining request.
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Abstract
An ATM-LAN system in which nodes connect terminals located in a limited region, and communication among terminals is effected in asynchronous transfer mode. The system comprises a connection setting process for transmitting a VP/VC link setting request and a VP/VC link chaining request to any one of the terminals, a broadcast channel for connecting any node and any terminal so that these requests may be transferred from any terminal to any node, and a node setting process for setting and connecting a VP/VC link upon receipt of the requests transferred by the broadcast channel.
203 Citations
23 Claims
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1. An ATM-LAN system comprising:
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a plurality of nodes each having assigned thereto a globally unique identifier; a plurality of terminals connected by said plurality of nodes with communication among said terminals being effected in asynchronous transfer mode, each of said terminals having assigned thereto a globally unique identifier and processing and sending out broadcast cells; connection setting process means incorporated in at least one of said terminals, for transmitting a link setting request for setting links of virtual paths or virtual channels, and also a link chaining request for connecting the links; a broadcast channel for connecting all of said nodes in said ATM-LAN system and said terminals therein and for transferring a message from said connection setting process means to said nodes, said message containing the link setting request, the link chaining request, and the globally unique identifier as a part of the destination address; and node setting process means incorporated in each of said nodes, for receiving the link setting request, the link chaining request and the globally unique identifier from said broadcast channel, for recognizing said terminals on the basis of the globally unique identifier, and for setting and connecting said links in accordance with the link setting request and the linking chaining request. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. An ATM-LAN system comprising:
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a plurality of nodes; a plurality of terminals connected by said plurality of nodes with communication among the terminals being effected in asynchronous transfer mode; connection setting process means incorporated in at least one of said terminals, for transmitting a link setting request for setting links of virtual paths or virtual channels, and also a link chaining request for connecting the links; a broadcast channel for connecting said nodes and said terminals, which has a communication path formed in accordance with information which a user has sets for each port of each of said nodes, and for transferring a message from said connection setting process means to said nodes, said message containing the link setting request and the link chaining request; and a plurality of node setting process means incorporated in said nodes, respectively, for receiving the link setting request and the link chaining request from said broadcast channel and for setting and connecting said links in accordance with the link setting request and the link chaining request.
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17. An ATM-LAN system comprising:
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a plurality of nodes; a plurality of terminals connected to said plurality of nodes with communication among the terminals being effected in asynchronous transfer mode; connection setting process means incorporated in at least one of said terminals, for transmitting a link setting request for setting links of virtual paths or virtual channels, and also a link chaining request for connecting the links; a broadcast channel for connecting said nodes and said terminals and for transferring a message from said connection setting process means to said nodes, said message containing the link setting request and the link chaining request; and node setting process means incorporated in each of said nodes, for receiving the link setting request and the link chaining request from said broadcast channel and for setting and connecting said links in accordance with the link setting request and the link chaining request.
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18. An ATM-LAN system comprising:
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a plurality of nodes; a plurality of terminals connected by said plurality of nodes with communication among the terminals being effected in asynchronous transfer mode; connection setting process means incorporated in at least one of said terminals, for transmitting a link setting request for setting links of virtual paths or virtual channels, and also a link chaining request for connecting the links; a broadcast channel for connecting said nodes and said terminals and for transferring a message from said connection setting process means to said nodes, said message containing the link setting request and the link chaining request; node setting process means incorporated in each of said nodes, for receiving the link settling request and the link chaining request from said broadcast channel and for setting and connecting said links in accordance with the link setting request and the link chaining request; zone-forming means connected to at least one of ports of at least one of said nodes, for preparing a zone within which a mobile terminal is able to be communicated with said zone-forming means; and message-transmitting means incorporated in the mobile terminal, for transmitting messages to the zone-forming means, said messages being of the same type as a message on said broadcast channel.
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19. An ATM-LAN system comprising:
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plurality of nodes; a plurality of terminals connected by said plurality of nodes with communication among the terminals being effected in asynchronous transfer mode; wherein each of said nodes is designed to transfer a broadcast cell from one of said terminals to another of said terminals and node setting process means for controlling the nodes, and to transfer a user cell from/to other terminal along a connection set between any selected ones of said terminals, and each of said nodes comprises an ATM switch for exchanging user cells, a bus for exchanging broadcast cells, and means for supplying the cell to an output port corresponding to said ATM switch in order to output the cell to an interface point.
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20. An ATM-LAN system comprising:
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a plurality of nodes; and a plurality of terminals connected by said plurality of nodes with communication among the terminals being effected in asynchronous transfer mode; and wherein each of said nodes is designed to transfer a broadcast cell from one of said terminals to another of said terminals and a node setting process means controlling the nodes, and to transfer a user cell from/to other terminal along a connection set between any selected ones of said terminals, and each of said nodes comprises a first FIFO for holding a user cell, a second FIFO for holding a broadcast cell, and an arbitration control means for determining which cell should be transferred to a target interface point, the broadcast cell held in said first FIFO or the user cell held in said second FIFO.
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21. An ATM-LAN system comprising:
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a plurality of nodes; a plurality of terminals connected by said plurality of nodes with communication among the terminals being effected in a synchronous transfer mode; connection setting process means incorporated in at least one of said terminals, for transmitting a link setting request for setting links of virtual paths or virtual channels, and also a link chaining request for connecting the links; a broadcast channel for connecting said nodes and said terminals and for transferring a message from said request sending means to said nodes, said message containing the link setting request and the link chaining request; and node setting process means incorporated in each of said nodes, for receiving the link setting request and the link chaining request from said broadcast channel and for setting and connecting said links in accordance with the link setting request and the link chaining request; and wherein each of said terminals and nodes has assigned thereto a globally unique identifier used as a part of a destination address of the message on said broadcast channel, and a broadcast address common to all of said terminals and a neighborhood node branching address are reserved as the destination address of the message on said broadcast channel.
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22. An ATM-LAN system comprising:
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a plurality of nodes; a plurality of terminals connected by said plurality of nodes with communication among said terminals being effected in asynchronous transfer mode; connection setting process means incorporated in at least one of said terminals, for transmitting a link setting request for setting links of virtual paths or virtual channels, and also a link chaining request for connecting the links; a broadcast channel for connecting all of said nodes in said ATM-LAN system and said terminals therein and for transferring a message from said request sending means to said nodes, said message containing the link setting request and the link chaining request; and node setting process means incorporated in each of said nodes, for receiving the link setting request and the link chaining request from said broadcast channel and for setting and connecting said links in accordance with the link setting request and the link chaining request, and wherein when said connection setting process means receives the connection setting request message from one of said terminals, it determines the nodes and transmission lines through which the requested connection passes and a virtual path identifier or a set of a virtual path and a virtual channel to be allocated to the connection every determined transmission line, and sending out the link setting request and the link chaining request which include the virtual path identifier or the set of the virtual path and the virtual channel determined for each of said node setting process means of said nodes through which the requested connection passes.
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23. An ATM-LAN system comprising:
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a plurality of nodes; a plurality of terminals connected by said plurality of nodes, communication among the terminals is effected in asynchronous transfer mode; connection setting process means incorporated in at least one of said terminals, for transmitting a link setting request for setting links of virtual paths or virtual channels, and also a link chaining request for connecting the links; a broadcast channel for connecting said nodes and said terminals and for transferring a message from said request sending means to said nodes, said message containing the link setting request and the link chaining request; and node setting process means incorporated in each of said nodes, for receiving the link setting request and the link chaining request from said broadcast channel and for setting and connecting said links in accordance with the link setting request and the link chaining request; and wherein each of said terminals and nodes has assigned thereto a globally unique identifier used as a part of a destination address of the message on said broadcast channel, and a broadcast address common to all of said terminals and a neighborhood node branching address are reserved as the destination address of the message on said broadcast channel, and wherein when said connection setting process means receives the connection setting request message from one of said terminals, determines the nodes and transmission tines through which the requested connection passes and a virtual path identifier or a set of a virtual path and a virtual channel to be allocated to the connection every determined transmission line, and sends out the link setting request and the link chaining request which include the virtual path identifier or the set of the virtual path and the virtual channel determined for each of said node setting process means of said nodes through which the requested connection passes.
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Specification