Multiplex communications – Data flow congestion prevention or control – Flow control of data transmission through a network
Reexamination Certificate
2005-12-27
2005-12-27
Marcelo, Melvin (Department: 2662)
Multiplex communications
Data flow congestion prevention or control
Flow control of data transmission through a network
C370S395500
Reexamination Certificate
active
06980519
ABSTRACT:
A multi-table-based grant generator in accordance with the present invention solves the issue of bandwidth granularity, while maintaining the simplicity of a table approach. The present invention grant generator provides grants of fine granularity for regulation of upstream transmission of cells in an ATM PON. Multiple grant tables having differing bandwidth granularities are linked together through a simple grant distribution mechanism. The grant tables and grant distribution mechanisms can be recursively linked to achieve a number of different granularities. The grant generator of the present invention is based on multiple grant tables with a combination of multiplexers, dividers, and address counters. The grant generator provides both larger and smaller bandwidths for data grants as well as PLOAM grants without large size grant tables. In one exemplary embodiment of the present invention, improved granularity is achieved, where a first grant table is used for one size of bandwidth grant, e.g., data grants, and the second grant table is used for another size of bandwidth grant, e.g., low bandwidth data grants as well as PLOAM grants. A simple clock divider couples to each of the grant tables through corresponding address counters. The clock divider provides a set number of bandwidth grants from each table over a complete cycle. The clock divider also selects an appropriate input port of a multiplexer through which the grants from each grant table are respectively transmitted. By having the ability to issue variable sized bandwidth grants, the granularity is significantly improved, thereby translating to a more efficient use of the bandwidth. More specifically, grants of a finer granularity can be issued without the need for an excessively large grant table usually thought to be necessary to produce fine granularities.
REFERENCES:
patent: 5481680 (1996-01-01), Larson et al.
patent: 5835494 (1998-11-01), Hughes et al.
patent: 5912998 (1999-06-01), Quayle
patent: 6064652 (2000-05-01), Buckland et al.
patent: 6298049 (2001-10-01), Vanhoof et al.
patent: 6424656 (2002-07-01), Hoebeke
patent: 6570886 (2003-05-01), De Groote et al.
patent: 000565739 (1993-10-01), None
patent: 0 957 654 (1998-05-01), None
patent: WO 97/19567 (1996-11-01), None
Kim., “An Optimized ATM-PON Based FTTH Access Network”, Sep. 1997, pp 1800-1804.
Horn David N
Kim Kyeong-Soo
Maessen J H J
Hodulik Matthew J.
Lucent Technologies - Inc.
Marcelo Melvin
LandOfFree
Multi-table based grant generator for improved granularity... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Multi-table based grant generator for improved granularity..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Multi-table based grant generator for improved granularity... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3472631