Telecommunications – Interference signal transmission
Patent
1996-03-14
1998-04-28
Peng, John K.
Telecommunications
Interference signal transmission
348 7, 348 12, 348 13, H04N 7173
Patent
active
057458375
ABSTRACT:
A method and apparatus for carrying an ATM communication protocol on a hybrid fiber coax CATV system. Point to point communication is supported by use of synchronous code division multiplexing on the physical and by assigning on the MAC layer one or more orthogonal SCDMA codes exclusively for use by pairs of devices needing to communicate such the head end and any customer premises equipment. Quality of service or guaranteed bandwidth availability is implemented by controlling the code space at the MAC layer such that certain CPEs having in use peripherals which cannot tolerate interruptions in data flow may reserve one or more SCDMA codes for use exclusively by them. Standard ATM cells are modified by the addition of a two byte virtual link header which identifies to which CPE a particular ATM packet is destined. This virtual header also makes possible broadcast and multicast of packets from the head end to all CPEs. Each byte in each ATM cell has 8 bits of data and a 9th bit which is encoded with to indicate where the ATM cell starts and includes CRC data for error detection and correction. Bandwidth is allocated by the head end computer which executes algorithms on the MAC layer to collect actual bandwidth usage information and requests for bandwidth and prioritize them in accordance with the channel allocation/reservation scheme currently use. The channel allocation/reservation scheme can be changed on the fly and reallocation calculations to adjust bandwidth allocations are calculated every 10 milliseconds and the new allocations are distributed in downstream messages which are transmitted to all CPEs.
REFERENCES:
patent: 4460992 (1984-07-01), Gutleber
patent: 4470138 (1984-09-01), Gutleber
patent: 4475208 (1984-10-01), Ricketts
patent: 4553161 (1985-11-01), Citta
patent: 4554579 (1985-11-01), Citta
patent: 4635274 (1987-01-01), Kubota
patent: 4688210 (1987-08-01), Eizenhofer et al.
patent: 4723164 (1988-02-01), Nienaber
patent: 4748681 (1988-05-01), Schmidt
patent: 4757460 (1988-07-01), Bione et al.
patent: 4773066 (1988-09-01), Kirkman
patent: 4811365 (1989-03-01), Manno
patent: 4912721 (1990-03-01), Pidgeon, Jr. et al.
patent: 4926130 (1990-05-01), Weaver
patent: 4933930 (1990-06-01), Lien et al.
patent: 5090024 (1992-02-01), Vander Mey et al.
patent: 5193094 (1993-03-01), Viterbi
patent: 5224122 (1993-06-01), Bruckert
patent: 5231664 (1993-07-01), Bestler et al.
patent: 5233630 (1993-08-01), Wolf
patent: 5235615 (1993-08-01), Omura
patent: 5235619 (1993-08-01), Beyers, II et al.
patent: 5239557 (1993-08-01), Dent
patent: 5280472 (1994-01-01), Gilhousen et al.
patent: 5295154 (1994-03-01), Gudmundson et al.
patent: 5297162 (1994-03-01), Lee et al.
patent: 5305308 (1994-04-01), English et al.
patent: 5309474 (1994-05-01), Gilhousen et al.
patent: 5313454 (1994-05-01), Bustini et al.
patent: 5319634 (1994-06-01), Bartholomew et al.
patent: 5325394 (1994-06-01), Bruckert
patent: 5327455 (1994-07-01), De Gaudenzi et al.
patent: 5345439 (1994-09-01), Marston
patent: 5345472 (1994-09-01), Lee
patent: 5347304 (1994-09-01), Moura et al.
patent: 5353300 (1994-10-01), Lee et al.
patent: 5359624 (1994-10-01), Lee et al.
patent: 5363403 (1994-11-01), Schilling et al.
patent: 5363404 (1994-11-01), Kotzin et al.
patent: 5373502 (1994-12-01), Turban
patent: 5390166 (1995-02-01), Rohani et al.
patent: 5394391 (1995-02-01), Chen et al.
patent: 5398258 (1995-03-01), Su et al.
patent: 5404570 (1995-04-01), Charas et al.
patent: 5414699 (1995-05-01), Lee
patent: 5416797 (1995-05-01), Gilhousen et al.
patent: 5418813 (1995-05-01), Schaffner et al.
patent: 5425027 (1995-06-01), Baran
patent: 5440585 (1995-08-01), Partridge, III
patent: 5442625 (1995-08-01), Gitlin et al.
patent: 5442627 (1995-08-01), Viterbi et al.
patent: 5442662 (1995-08-01), Fukasawa et al.
patent: 5442700 (1995-08-01), Snell et al.
patent: 5448555 (1995-09-01), Bremer et al.
patent: 5452328 (1995-09-01), Rice
patent: 5463660 (1995-10-01), Fukasawa et al.
patent: 5467342 (1995-11-01), Logston et al.
patent: 5481533 (1996-01-01), Honig et al.
patent: 5511067 (1996-04-01), Miller
patent: 5533013 (1996-07-01), Leppanen
patent: 5539730 (1996-07-01), Dent
patent: 5557316 (1996-09-01), Hoarty et al.
Fish Ron
Flynn Nathan J.
Peng John K.
Terayon Corporation
LandOfFree
Apparatus and method for digital data transmission over a CATV s does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Apparatus and method for digital data transmission over a CATV s, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus and method for digital data transmission over a CATV s will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1543790