Packet data network having distributed database
First Claim
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1. A communication network for exchanging data packets with a wireline network, comprising:
- a plurality of nodes, wherein at least one node includes a database for storing location information, and each node includes means for forwarding data packets arriving at the respective node;
at least one remote terminal for communicating with at least one of the nodes; and
a gateway node in communication with the wireline network and with the nodes;
wherein remote terminals periodically send control packets to at least one of the nodes for updating respective location information relating to the remote terminals in the database;
wherein the database comprises a connection management database for storing location information relating to the remote terminals that are exchanging data packets with the wireline network; and
the database further comprises a location management database for storing respective location information relating to remote terminals that are in a service area of a node but are not exchanging data packets with the wireline network; and
wherein each node includes a root-port for sending data packets to the gateway node and at least one of the following ports;
a leaf-port for receiving data packets from a root-port of another node and a port for exchanging packets with a remote terminal; and
data packets sent from the wireline communication network are directed to the remote terminals based on the location information in the database.
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Abstract
Communication networks and network nodes for carrying packet data traffic have architectures that give large freedom in network topology and simplify network extensions, accompanied by a lightweight but robust protocol. A network may be a cellular network that handles packet data traffic and voice traffic. Location information relating to terminals in a network may be determined through terminal-originated packets or control messaging. Stored location information may be cleared by elapse of time or specific messaging. Location information for different kinds of terminals may be stored in a centralized or distributed database.
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Citations
37 Claims
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1. A communication network for exchanging data packets with a wireline network, comprising:
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a plurality of nodes, wherein at least one node includes a database for storing location information, and each node includes means for forwarding data packets arriving at the respective node;
at least one remote terminal for communicating with at least one of the nodes; and
a gateway node in communication with the wireline network and with the nodes;
wherein remote terminals periodically send control packets to at least one of the nodes for updating respective location information relating to the remote terminals in the database;
wherein the database comprises a connection management database for storing location information relating to the remote terminals that are exchanging data packets with the wireline network; and
the database further comprises a location management database for storing respective location information relating to remote terminals that are in a service area of a node but are not exchanging data packets with the wireline network; and
wherein each node includes a root-port for sending data packets to the gateway node and at least one of the following ports;
a leaf-port for receiving data packets from a root-port of another node and a port for exchanging packets with a remote terminal; and
data packets sent from the wireline communication network are directed to the remote terminals based on the location information in the database. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A node in a communication network for exchanging data packets with a wireline network, the communication network including at least one remote terminal, and the node comprising:
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a connection management database for storing location information relating to remote terminals that are exchanging data packets with the wireline network;
a location management database for storing location information relating to remote terminals that are in a service area of the node but are not exchanging data packets with the wireline network;
means for forwarding data packets arriving at the node;
a root-port for sending data packets toward the wireline network; and
at least one of the following ports;
a leaf-port for receiving data packets from a rootport of another node and a port for exchanging packets with a remote terminal;
wherein a remote terminal periodically sends control packets to the node for updating its respective location information in the database; and
data packets sent from the wireline network are directed to a remote terminal based on the location information in the database. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37)
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Specification