Multiplex communications – Communication over free space – Using trunking
Reexamination Certificate
2001-02-12
2003-07-15
Vu, Huy D. (Department: 2665)
Multiplex communications
Communication over free space
Using trunking
C370S447000, C370S462000, C455S520000
Reexamination Certificate
active
06594247
ABSTRACT:
TECHNICAL FIELD
This invention relates in general to the field of radio communications and more specifically to a method for contention resolution in a multi-user communication session.
BACKGROUND
Communication sessions that permit multi-user participation are often plagued by delays that occur due to session-access collisions from multiple users. Most protocols attempt to solve these contentions by using a random backoff scheme that eventually reduces the number of session-access collisions to an acceptable level. However, there is typically a great deal of delay associated with this approach. A need exists in the art for a method of minimizing the contention-resolution delay in modern multi-access communication systems and also reduce the number of session-access collisions.
REFERENCES:
patent: 4553263 (1985-11-01), Smith et al.
patent: 5481539 (1996-01-01), Hershey et al.
patent: 5729542 (1998-03-01), Dupont
patent: 6055411 (2000-04-01), Ishida et al.
patent: 6226279 (2001-05-01), Hansson et al.
patent: 6240083 (2001-05-01), Wright et al.
Allen Vernon Anthony
Chen Priscilla L.
O'Dea Robert J.
Palacios Juan Carlos
Perkins Matthew R.
Doutre Barbara R.
Fuller Andrew S.
Ho Duc
Motorola Inc.
Motorola, Inc.
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