System for location multicasting and database management for mobile sessions in any computer subnetworks without using a home router of a home subnetwork
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United States of America Patent
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Jan 19, 1999
Grant Date -
N/A
app pub date -
Aug 15, 1996
filing date -
Feb 7, 1996
priority date (Note) -
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Abstract
In a computer network where each mobile host is assigned a subnetwork-independent logical identifier (L-ID), the mobile host acquires a subnetwork-dependent geographical identifier (G-ID) from an agent-existing subnetwork and sends the G-ID to the home subnetwork of the mobile host for location registration if a beacon received therefrom is a first one or different from a previous one or acquires a G-ID from an agentless subnetwork and sends the G-ID to the home subnetwork if no beacons are received. At intervals, a multicast packet is sent from the mobile host, containing the acquired G-ID to the agentless subnetwork. A similar multicast packet is received from a second mobile host and the G-ID contained therein is stored in a database corresponding to the L-ID of the second mobile host. When establishing a session, a data packet is sent from the mobile host to the network along with a G-ID corresponding to a L-ID of the data packet stored in the database. No G-ID is appended if the L-ID of the data packet has no corresponding identifier in the database. At the home subnetwork, a data packet destined to a mobile host of a subnetwork is encapsulated with the G-ID of the mobile host and routed to the subnetwork.
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- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
- NEC CORPORATION
International Classification(s)
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Okanoue, Kazuhiro | Tokyo, JP | 55 | 1796 |
Osawa, Tomoki | Tokyo, JP | 33 | 1145 |
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Fee | Large entity fee | small entity fee | micro entity fee |
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Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
Surcharge after expiration - Late payment is unintentional | $1,640.00 | $820.00 | $410.00 |
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