Communications system
First Claim
Patent Images
1. A communications system, comprising:
- a network formed by a plurality of geographically distributed interconnected nodes, each defining a service area;
means interconnecting the nodes;
a plurality of subscriber units;
means for storing registration details of a subscriber unit at one of said nodes, defined as a home node; and
means responsive to a subscriber unit registering with a node other than its home node for causing registration details relating to that subscriber unit to be stored at those of said interconnected nodes lying on a path between said home node and the node at said subscriber unit registered.
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Abstract
A communications system includes a network formed by several geographically distributed, interconnected nodes, each of which defines a service area. Each node has stores registration details for at least one of several of subscriber units, the node being the home node for such at least one station. Each node is responsive to a subscriber unit registering with a node other than its home node for causing registration details relating to that subscriber unit to be stored at those of the interconnected nodes lying on a path between the home node and the node at which registration has most recently occurred.
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Citations
20 Claims
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1. A communications system, comprising:
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a network formed by a plurality of geographically distributed interconnected nodes, each defining a service area; means interconnecting the nodes; a plurality of subscriber units; means for storing registration details of a subscriber unit at one of said nodes, defined as a home node; and means responsive to a subscriber unit registering with a node other than its home node for causing registration details relating to that subscriber unit to be stored at those of said interconnected nodes lying on a path between said home node and the node at said subscriber unit registered. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A communications system for use in serving a plurality of subscriber units, comprising:
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a network formed by a plurality of geographically distributed nodes, each defining a service area; means for storing registration details of a subscriber unit at one of said nodes, defined as a home node therefor; and means, responsive to said subscriber unit registering with a node other than said home node, for causing registration details relating to said subscriber unit to be stored at those of said interconnected nodes which lie on an interconnected path between said home node and the node at which said subscriber unit registered.
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12. A particular node for use in a communications system for use in serving a subscriber unit, said communications system including a network formed by interconnecting a plurality of geographically distributed nodes, each of said nodes defining a service area, said particular node being one of said nodes, said subscriber unit being assigned to one of said nodes as a home node, said particular node comprising:
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means for communicating with at least two others of said nodes, including means (i) for receiving from a first of said at least two other nodes registration details relating to said subscriber unit, and (ii) for transmitting said received registration details to a second of said at least two other nodes; and means for storing registration details relating to that subscriber unit when (a) said subscriber unit registers with a node other than its home node, (b) said particular node lies on a path of interconnected nodes between said home node and said node at which said subscriber just registered, and (c) said particular node is not said home node nor said node at which said subscriber just registered.
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13. A particular node for use in a communications system for use in serving a subscriber unit, said communications system including a network formed by a plurality of geographically distributed interconnected nodes each of which defines a service area, said particular node being one of said nodes, said subscriber unit being assigned to one of said nodes as a home node, said particular node comprising:
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means for receiving registration details relating to said subscriber unit when said particular node lies on a path of interconnected nodes between said home node and a node at which said subscriber unit most recently registered when said particular node is not said home node nor said node at which said subscriber unit most recently registered; means for storing said received registration details substantially only while said particular node continuously remains part of a path of interconnected nodes between said home node and said node at which said subscriber unit most recently registered.
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14. A particular node for use in a communications system for use in serving a subscriber unit, said communications system including a network formed by a plurality of geographically distributed interconnected nodes each of which defines a service area, said particular node being one of said nodes, each of said subscriber units being assigned to one of said nodes as a home node, said particular node comprising:
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a transceiver; and means, responsive to a subscriber unit registering with a node other than its home node, for storing registration details relating to that subscriber unit substantially only while (i) said particular node lies on a path of interconnected nodes between said home node and a node at which said subscriber unit most recently registered and (ii) said particular node is not said home node nor said node at which said subscriber unit most recently registered.
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15. A communications system, comprising:
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a network formed by a plurality of geographically distributed nodes, each defining a service area; a plurality of subscriber units; means for storing registration details of a particular subscriber unit at one of said nodes, defined as a home node for said particular subscriber unit; and means, responsive to said particular subscriber unit registering with a particular node which is other than its home node, for causing registration details relating to said particular subscriber unit to be stored at those of said nodes lying on an interconnected path between said home node and the particular node at which said registration occurred. - View Dependent Claims (16, 17)
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18. A node for use in a communications system formed by a plurality of geographically distributed nodes, each defining a service area, said node comprising:
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means for interconnecting said node to at least one other node; means adapted for coupling said node to at least one subscriber unit; means for storing registration details of a particular subscriber unit for which said node is defined as a home node; and means, responsive to another of said subscriber units registering with any node of said communication system that is not a home node for said other subscriber unit, for initiating the storage of registration details relating to said another subscriber unit in at least one of said nodes lying on a path between said home node and the node at which said another subscriber unit registered. - View Dependent Claims (19, 20)
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Specification