Invalidity dossier
US 5625628
Aloha optimization
Current assignee: JPMorgan Chase Bank NA
Added 9/21/2026, 10:30:23 AM
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Patent summary
Title, assignee, inventors, filing/issue dates, abstract, and a plain-language overview of the claims.
Patent Overview — US5625628A
Title: "Aloha optimization"
Patent number: US5625628A; Application number: US08/404,707
Inventor: Robert G. Heath
Assignee/current assignee (as listed): Hughes Network Systems LLC; JPMorgan Chase Bank NA. Original assignee: Hughes Electronics Corp.
Dates: Priority/filing date 1995-03-15; publication/grant 1997-04-29; anticipated expiration 2015-03-15. Legal status listed as "Expired – Lifetime."
Classifications: H04J3/247 (ATM or packet multiplexing), H04B7/18578 and H04B7/18582 (satellite systems for broadband data service; data framing, error recovery, multiple access).
Purpose: The patent addresses bandwidth optimization in an integrated satellite network, specifically optimization of the Aloha component. In the described system, the inroute (remote terminal to satellite to hub) is divided into a frame comprising Stream, Transaction Reservation, User Aloha, and Control Aloha components. User Aloha carries short, infrequent messages (e.g., credit card authorizations); Transaction Reservation carries file transfers and lengthy transactions. Because the configured allocation of User Aloha versus Transaction Reservation slots may not match actual load, portions go unused while others are congested, increasing collisions and delay.
Plain-language scope: Per the supplied text, the invention is characterized as a method in which a first remote terminal requests that the host terminal allocate Transaction Reservation slots to it; once any such request is fulfilled, unallocated Transaction Reservation slots are redesignated as "extra Aloha" slots. A second remote terminal then selects a target slot from the Aloha portion and the extra Aloha slots, giving it more slots to choose from and thus decreasing the probability of Aloha packet collisions.
Source: https://patents.google.com/patent/[US5625628](/patent/US5625628)/en
Not established by this excerpt: the full text of the claims, the complete description, the drawings (FIGS. 1–2 are only partly quoted), and the specific omitted portions of the specification.
Generated 10/1/2026, 10:01:35 PM
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Litigation summary
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PTAB challenges
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Assignment history
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Prior art
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Obviousness
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Extensions
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Derivative works
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