Communication over selected part of a network
First Claim
1. A method of communication of datagrams over a network comprising sub-networks from a sender terminal to a plurality of destination terminals served by a plurality of said sub-networks, in which the datagrams are routed using destination identifications contained in the datagrams, characterised in that sub-network servers send messages to respective ones of said sub-networks, and a sub-network grouping server selects a plurality of said sub-network servers and provides communication of regional broadcast datagrams from said sender terminal through said selected sub-network servers to destination terminals within the corresponding selected sub-networks, said regional broadcast datagrams being sent from said sender terminal to said sub-network grouping server by unicast transmission, and said grouping server making the selection of said sub-network servers according to criteria chosen as a function of information derived from said sender terminal without the individual destination identifications of said destination terminals being specified by said sender terminal.
4 Assignments
0 Petitions
Accused Products
Abstract
A method of, and apparatus for, communication of datagrams over a network comprising sub-networks (1 to 5) served by respective sub-network servers (7 to 11) from a sender terminal (15), especially a mobile terminal communicating over a wireless link, and a plurality of destination terminals (12 to 19) served by a plurality of said sub-networks (1 to 5), in which the datagrams are routed using destination identifications contained in the datagrams. A sub-network grouping server (20) selects a plurality of the sub-network servers (1,4) and provides communication of datagrams between the sender terminal (15) and destination terminals (12, 13, 16) within the corresponding selected sub-networks (1,4) the selection being made according to criteria, such as geographic position, chosen as a function of information derived from the sender terminal (15) without the individual destination identifications of the destination terminals (12 to 19) being specified by the sender terminal (15).
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Citations
16 Claims
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1. A method of communication of datagrams over a network comprising sub-networks from a sender terminal to a plurality of destination terminals served by a plurality of said sub-networks, in which the datagrams are routed using destination identifications contained in the datagrams,
characterised in that sub-network servers send messages to respective ones of said sub-networks, and a sub-network grouping server selects a plurality of said sub-network servers and provides communication of regional broadcast datagrams from said sender terminal through said selected sub-network servers to destination terminals within the corresponding selected sub-networks, said regional broadcast datagrams being sent from said sender terminal to said sub-network grouping server by unicast transmission, and said grouping server making the selection of said sub-network servers according to criteria chosen as a function of information derived from said sender terminal without the individual destination identifications of said destination terminals being specified by said sender terminal.
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11. Apparatus for communication of datagrams over a network that comprises sub-networks from a sender terminal to a plurality of destination terminals served by a plurality of said sub-networks, the datagrams being routed using destination identifications contained in the datagrams,
characterised in that said apparatus comprises sub-network servers for sending messages to respective ones of said sub-networks and a sub-network grouping server for selecting a plurality of said sub-network servers and for providing communication of regional broadcast datagrams from said sender terminal to destination terminals within the corresponding selected sub-networks, said regional broadcast datagrams being received from said sender terminal at said sub-network grouping server by unicast transmission, and said grouping server making the selection of said sub-network servers according to criteria chosen as a function of information derived from said sender terminal without the individual destination identifications of said destination terminals being specified by said sender terminal.
Specification