US Patent No: 7,535,822
Number of patents in Portfolio can not be more than 2000
Synchronization of remote units for a communication network
Stats
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May 19, 2009
Issued date -
May 30, 2006
filing date -
11/420,851
serial no -
In Force
status
Importance
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Abstract
A method for maintaining the quality of transmission from a head end to a service unit in a telecommunications system that uses a multi-carrier transmission scheme with dynamic bandwidth allocation is disclosed. The method involves allocating a first payload channel to a service unit in a subband of a transmission channel of the telecommunications system and monitoring the quality of the first payload channel. When the quality of the first payload channel drops below a threshold, the method allocates a second, different payload channel to the channel unit.
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First Claim
Related Publications
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International Classification(s)
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Cited Art
| Patent Info | (Count) | # Cites | Year |
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| 5,029,164 Congestion avoidance in high-speed network carrying bursty traffic | 191 | 1990 | |
| 5,650,997 Method and apparatus for use in a network of the ethernet type, to improve fairness by controlling collision backoff times in the event of channel capture | 66 | 1996 | |
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|||
| 4,774,707 Random access communication system with scheduled data transmission and asynchronous contention scheduling | 125 | 1986 | |
| 4,701,911 Media accessing apparatus and method for communication system | 34 | 1986 | |
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|||
| 4,604,745 Method of searching fault locations in digital transmission line | 45 | 1984 | |
| 5,537,414 Method of wireless communication between base station and mobile station and multiple access communication system | 164 | 1993 | |
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|
|||
| 5,063,574 Multi-frequency differentially encoded digital communication for high data rate transmission through unequalized channels | 104 | 1990 | |
| 5,166,924 Echo cancellation in multi-frequency differentially encoded digital communications | 141 | 1990 | |
|
|
|||
| 4,331,974 Cable television with controlled signal substitution | 226 | 1980 | |
| 4,404,589 Cable television with multi-event signal substitution | 132 | 1980 | |
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|||
| 4,953,197 Combination spatial diversity system | 83 | 1988 | |
| 5,022,024 Subscriber RF telephone system for providing multiple speech and/or data signals simultaneously over either a single or a plurality of RF channels | 201 | 1989 | |
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|||
| 4,862,104 Phase synchronization system | 40 | 1989 | |
| 5,128,625 Adaptive phase lock loop system | 69 | 1990 | |
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|||
| 5,274,629 Method for the broadcasting of digital data, notably for radio broadcasting at high bit rate towards mobile receivers, with time-frequency interlacing and coherent demodulation | 99 | 1991 | |
| 5,191,576 Method for broadcasting of digital data, notably for radio broadcasting at high throughput rate towards mobile receivers, with time frequency interlacing and analog synchronization | 120 | 1991 | |
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|||
| 4,430,731 Video and data distribution module with subscriber terminal | 136 | 1981 | |
| 4,484,218 Video distribution control system | 167 | 1981 | |
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|||
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| 5,802,241 Communication system | 100 | 1996 | |
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|||
| 5,343,499 Quadrature amplitude modulation synchronization method | 60 | 1992 | |
| 5,365,525 Method for reducing bandwidth of a wireline communication path | 34 | 1992 | |
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|||
| 5,488,632 Transmission and reception in a hostile interference environment | 88 | 1992 | |
| 5,345,440 Reception of orthogonal frequency division multiplexed signals | 118 | 1993 | |
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|||
| 5,134,464 Method and apparatus for the transmission and reception of a multicarrier digital television signal | 154 | 1991 | |
| 5,291,289 Method and apparatus for transmission and reception of a digital television signal using multicarrier modulation | 171 | 1992 | |
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|||
| 4,860,287 Network having a synchronizer for synchronization between a primary and a remote station | 46 | 1987 | |
| 5,185,738 Fiberoptic telephone systems | 48 | 1990 | |
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|||
| 5,408,260 Customer premises ADSL signal distribution arrangement | 172 | 1994 | |
| 5,499,047 Distribution network comprising coax and optical fiber paths for transmission of television and additional signals | 88 | 1994 | |
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| 4,996,706 Method of controlling the electric power supplied to a modem | 69 | 1989 | |
| 6,005,861 Home multimedia network architecture | 176 | 1999 | |
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|||
| 5,471,464 Orthogonal frequency division multiplex demodulation apparatus | 125 | 1994 | |
| 5,903,546 Means and method of improving multiplexed transmission and reception by coding and modulating divided digital signals | 81 | 1996 | |
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|||
| 4,734,764 Cable television system selectively distributing pre-recorded video and audio messages | 246 | 1985 | |
| 5,195,092 Interactive multimedia presentation & communication system | 311 | 1991 | |
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|||
| 5,488,413 CATV telephony system using subsplit band for both directions of transmission | 84 | 1994 | |
| 5,606,725 Broadband network having an upstream power transmission level that is dynamically adjusted as a function of the bit error rate | 81 | 1994 | |
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|||
| 4,528,663 Peak load access in a two-way CATV contention system | 66 | 1983 | |
| 5,546,119 Transmission modulator for cable television upstream data transmission | 36 | 1994 | |
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|||
| 5,042,000 Integral transform method | 46 | 1989 | |
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|||
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|||
| 5,495,283 Cable television video messaging system and headend facility incorporating same | 80 | 1993 | |
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|||
| 5,289,474 Communication network interface testing system | 42 | 1988 | |
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|||
| 5,054,050 Drop testing in fiber to the home systems | 63 | 1990 | |
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|||
| 4,677,686 Passive transmission of data over cable TV systems | 59 | 1983 | |
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|||
| 6,075,972 CATV network and cable modem system having a wireless return path | 58 | 1998 | |
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|||
| 5,425,027 Wide area fiber and TV cable fast packet cell network | 152 | 1993 | |
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|||
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|||
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|||
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|||
| 4,646,296 Distributed telephone system | 105 | 1984 | |
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|||
| 5,157,659 Packet communication system and method of clearing communication bus | 61 | 1990 | |
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|||
| 5,083,218 Hand-held image reading apparatus | 56 | 1990 | |
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|||
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|||
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|||
| 5,243,598 Microcell system in digital cellular | 168 | 1991 | |
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|||
| 5,659,351 Switch and insertion networks in optical cable TV system | 87 | 1994 | |
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|||
| 4,516,170 Dual mode UHF tuning system | 57 | 1984 | |
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|||
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|||
| 4,745,592 Coherent photonic telecommunications system | 37 | 1987 | |
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|||
| 4,475,211 Digitally controlled transversal equalizer | 45 | 1982 | |
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|||
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|||
| 5,896,382 Method and apparatus for communicating information between a headend and subscriber over a wide area network | 89 | 1996 | |
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|||
| 5,115,451 Local area network modem | 51 | 1988 | |
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|||
| 4,791,590 High performance signal processor | 82 | 1985 | |
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|||
| 2003/0026,282 Splitterless multicarrier modem | 35 | 2002 | |
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|||
| 5,014,267 Video conferencing network | 280 | 1989 | |
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|||
| 4,821,120 Television sub-carrier transmission | 103 | 1986 | |
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|
|||
| 5,748,677 Reference signal communication method and system | 148 | 1996 | |
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|||
| 4,943,980 Multi-carrier high speed modem | 73 | 1989 | |
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|||
| 5,355,114 Reconstruction of signals using redundant channels | 168 | 1994 | |
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|
|||
| 5,771,449 Sectorized multi-function communication system | 87 | 1995 | |
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|
|||
| 5,283,811 Decision feedback equalization for digital cellular radio | 86 | 1991 | |
|
|
|||
| 4,881,241 Method and installation for digital communication, particularly between and toward moving vehicles | 152 | 1988 | |
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|||
| 4,215,366 Subscriber-limited reception television broadcast security encoder-decoder system | 135 | 1979 | |
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|||
| 5,299,192 Digital filter-type frequency demultiplexing device | 91 | 1992 | |
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|||
| 4,710,918 Composite data transmission system | 59 | 1986 | |
|
|
|||
| 5,483,529 Receiver | 119 | 1994 | |
|
|
|||
| 5,128,967 Symbol state trellis maximum likelihood detection method | 67 | 1989 | |
|
|
|||
| 4,612,626 Method of performing real input fast fourier transforms simultaneously on two data streams | 43 | 1983 | |
|
|
|||
| 5,136,411 Dynamically responsive CATV system with shared fiber optic link | 128 | 1989 | |
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|||
| 6,097,736 Telecommunications network | 42 | 1995 | |
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|||
| 5,454,037 Portable secure-telephone communications module | 46 | 1993 | |
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|||
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|||
| 4,290,142 Interactive cable television system | 157 | 1979 | |
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|||
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|||
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|||
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|||
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|||
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|||
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|||
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|||
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|||
| 5,390,216 Synchronization method for a mobile radiotelephone | 111 | 1993 | |
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|||
| 5,673,252 Communications protocol for remote data generating stations | 182 | 1995 | |
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|||
| 5,732,068 Signal transmitting apparatus and signal receiving apparatus using orthogonal frequency division multiplexing | 125 | 1995 | |
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|||
| 5,375,140 Wireless direct sequence spread spectrum digital cellular telephone system | 165 | 1992 | |
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|||
| 5,535,206 Upstream data transmission system for cable television | 52 | 1995 | |
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|
|||
| 5,025,485 Multi-feed, multi-channel communication system | 73 | 1989 | |
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|
|||
| 4,768,188 Optical demand assigned local loop communication system | 109 | 1986 | |
|
|
|||
| 4,506,387 Programming-on-demand cable system and method | 352 | 1983 | |
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|
|||
| 4,847,872 Method and arrangement for synchronizing a receiver in digital transmission systems | 40 | 1988 | |
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|
|||
| 2001/0032,334 INGRESS PROTECTION IN A COMMUNICATION SYSTEM WITH ORTHOGONAL CARRIERS | 33 | 1999 | |
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|
|||
| 5,425,050 Television transmission system using spread spectrum and orthogonal frequency-division multiplex | 112 | 1993 | |
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|||
| 5,293,329 Apparatus for and method of digital signal processing | 44 | 1992 | |
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|
|||
| 5,485,630 Audio/video distribution system | 60 | 1994 | |
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|
|||
| 4,691,314 Method and apparatus for transmitting data in adjustable-sized packets | 83 | 1985 | |
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|
|||
| 5,963,833 Method for cleaning semiconductor wafers and | 52 | 1997 | |
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|||
| 5,479,168 Compatible signal encode/decode system | 162 | 1993 | |
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|||
| 4,866,732 Wireless telephone system | 230 | 1986 | |
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|
|||
| 5,005,183 Wireless telephone system | 135 | 1989 | |
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|||
| 4,773,066 Synchronized multiple access apparatus and method for a local area network | 66 | 1986 | |
|
|
|||
| 4,807,259 Time synchronization method in data transmission system | 99 | 1987 | |
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|
|||
| 5,345,439 Multi purpose digital signal regenerative processing apparatus | 161 | 1993 | |
|
|
|||
| 4,343,042 Bi-directional data transmission and control system | 165 | 1979 | |
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|
|||
| 5,327,575 Directional handover control in digital mobile radio systems employing MAHO | 122 | 1992 | |
|
|
|||
| 5,170,470 Integrated modem which employs a host processor as its controller | 80 | 1988 | |
|
|
|||
| 5,509,033 Quadrature overlapping modulation system | 18 | 1993 | |
|
|
|||
| 5,303,229 Optical network unit | 127 | 1991 | |
|
|
|||
| 4,847,880 Multipoint modem system having fast synchronization | 79 | 1988 | |
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|
|||
| 5,167,632 Syringe | 50 | 1992 | |
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|||
| 6,011,950 Apparatus and method for using forward error correction setting to enable simultaneous use of multiple modulation systems on terrestrial distribution networks | 37 | 1999 | |
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|||
| 5,177,739 Multiport - multipoint digital data service | 62 | 1990 | |
|
|
|||
| 4,300,229 Transmitter and receiver for an othogonally multiplexed QAM signal of a sampling rate N times that of PAM signals, comprising an N/2-point offset fourier transform processor | 58 | 1980 | |
|
|
|||
| 5,406,551 Method and apparatus for digital signal transmission using orthogonal frequency division multiplexing | 128 | 1993 | |
|
|
|||
| 5,703,873 Method and apparatus for synchronizing subscriber equipment with base stations in a CDMA radio network | 95 | 1995 | |
|
|
|||
| 4,500,989 Digital communication system | 57 | 1982 | |
|
|
|||
| 4,604,721 Computer and method for high speed prime factor transform | 42 | 1985 | |
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|
|||
| 5,537,443 Interference signal cancelling method, receiver and communication system using the same | 101 | 1994 | |
|
|
|||
| 5,541,965 Carrier frequency synchronization device using two different B/W filters | 48 | 1994 | |
|
|
|||
| 5,193,109 Zoned microcell with sector scanning for cellular telephone system | 154 | 1991 | |
|
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|||
| 5,600,672 Communication system | 117 | 1994 | |
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|
|||
| 4,381,546 System for the quantitative measurement of impairments in the communication channel of a quadrature amplitude modulation data communication system | 58 | 1979 | |
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|||
| 5,541,955 Adaptive data rate modem | 293 | 1995 | |
|
|
|||
| 5,802,117 Method and apparatus for joint frequency offset and timing estimation of a multicarrier modulation system | 89 | 1996 | |
|
|
|||
| 4,558,358 Cable network monitoring system for CATV system | 59 | 1982 | |
|
|
|||
| 4,387,456 Alarm monitoring arrangements for digital telecommunications switching networks | 35 | 1980 | |
|
|
|||
| 5,193,103 Digital phase locked loop circuit | 37 | 1991 | |
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|
|||
| 4,587,066 Method and apparatus for forming magnetic recording media | 34 | 1984 | |
|
|
|||
| 5,969,584 Resonating structure providing notch and bandpass filtering | 34 | 1997 | |
|
|
|||
| 4,998,244 High speed module interconnection bus | 37 | 1989 | |
|
|
|||
| 4,519,074 Transceiver having collision detection capability for contention-formatted FDM local area networks | 69 | 1983 | |
|
|
|||
| 5,111,460 Process for the localization of defective stations in local networks and associated interface controller | 56 | 1991 | |
|
|
|||
| 5,002,038 Burner construction and method of making the same | 47 | 1989 | |
|
|
|||
| 5,471,474 Communications highway network system | 86 | 1993 | |
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|
|||
| 4,275,452 Simplified fast fourier transform butterfly arithmetic unit | 43 | 1979 | |
|
|
|||
| 5,802,173 Radiotelephony system | 153 | 1992 | |
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|
|||
| 5,521,943 COFDM combined encoder modulation for digital broadcasting sound and video with PSK, PSK/AM, and QAM techniques | 91 | 1993 | |
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|||
| 5,483,550 Mobile cellular radio systems | 75 | 1994 | |
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|||
| 5,576,702 Method and apparatus for fault-tolerant transmission in multi-channel networks | 38 | 1995 | |
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|||
| 4,644,535 PCM channel multiplexer/demultiplexer | 53 | 1984 | |
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|||
| 5,313,413 Apparatus and method for preventing I/O bandwidth limitations in fast fourier transform processors | 52 | 1993 | |
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|||
| 4,800,588 Telephone network interface system | 86 | 1985 | |
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|||
| 5,095,482 Method of and apparatus of individually monitoring transmission sections of a communications transmission link | 38 | 1989 | |
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|||
| 5,590,403 Method and system for efficiently providing two way communication between a central network and mobile unit | 77 | 1992 | |
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|||
| 4,686,667 Broadband integrated subscriber loop system | 75 | 1985 | |
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|||
| 5,208,812 Telecommunications system | 75 | 1990 | |
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|
|||
| 5,528,621 Packet data communication system | 147 | 1993 | |
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|
|||
| 5,235,615 Spread spectrum method | 151 | 1992 | |
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|||
| 5,228,025 Method for the broadcasting of digital data, notably for radio broadcasting at a high bit-rate towards mobile receivers, with time-frequency interlacing and assistance in the acquisition of automatic frequency control, and corresponding receiver | 146 | 1991 | |
|
|
|||
| 5,255,290 Method and apparatus for combined frequency offset and timing offset estimation | 74 | 1992 | |
|
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|||
| 4,705,350 Optical transmission network | 59 | 1985 | |
|
|
|||
| 4,623,920 Cable network data transmission system | 168 | 1983 | |
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|||
| 7,071,994 System and method for nondisruptively embedding an OFDM modulated data signal into a composite video signal | 47 | 2001 | |
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|||
| 6,426,983 Method and apparatus of using a bank of filters for excision of narrow band interference signal from CDMA signal | 80 | 1998 | |
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|||
| 5,479,447 Method and apparatus for adaptive, variable bandwidth, high-speed data transmission of a multicarrier signal over digital subscriber lines | 652 | 1993 | |
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|||
| 4,206,320 High speed modem suitable for operating with a switched network | 105 | 1978 | |
|
|
|||
| 5,455,547 Microelectromechanical signal processors | 76 | 1994 | |
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|||
| 4,907,233 VLSI single-chip (255,223) Reed-Solomon encoder with interleaver | 80 | 1988 | |
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|||
| 4,494,228 Orthogonal code division multiple access communications systems | 85 | 1982 | |
|
|
|||
| 5,408,681 Automatic repeater station for signal transmissions | 36 | 1993 | |
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|
|||
| 5,444,697 Method and apparatus for frame synchronization in mobile OFDM data communication | 157 | 1993 | |
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|||
| 5,584,051 Radio broadcast transmission system and receiver for incompatible signal formats, and method therefor | 91 | 1994 | |
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|||
| 4,491,983 Information distribution system | 165 | 1982 | |
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|||
| 4,912,705 Subscriber RF telephone system for providing multiple speech and/or data signals simultaneously over either a single or a plurality of RF channels | 192 | 1989 | |
|
|
|||
| 4,617,656 Information transmission system with modems coupled to a common communication medium | 123 | 1986 | |
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|||
| 5,030,085 Wick operating structure of lever actuation type for oil burner | 25 | 1989 | |
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|||
| 5,636,246 Multicarrier transmission system | 118 | 1994 | |
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|||
| 5,357,249 Apparatus and method for high speed flexible multiplexing for fiber optic data transmissions | 50 | 1991 | |
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|||
| 4,891,694 Fiber optic cable television distribution system | 138 | 1988 | |
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|||
| 5,111,497 Alarm and test system for a digital added main line | 138 | 1990 | |
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|||
| 4,185,168 Method and means for adaptively filtering near-stationary noise from an information bearing signal | 101 | 1978 | |
|
|
|||
| 5,499,236 Synchronous multipoint-to-point CDMA communication system | 102 | 1994 | |
|
|
|||
| 5,673,291 Simultaneous demodulation and decoding of a digitally modulated radio signal using known symbols | 119 | 1994 | |
|
|
|||
| 4,710,924 Local and remote bit error rate monitoring for early warning of fault location of digital transmission system | 51 | 1985 | |
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|
|||
| 5,673,292 AM-PSK system for broadcasting a composite analog and digital signal using adaptive M-ary PSK modulation | 79 | 1996 | |
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|
|||
| 5,005,169 Frequency division multiplex guardband communication system for sending information over the guardbands | 208 | 1989 | |
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|||
| 5,349,580 Method and apparatus for channel allocation integrity in a communication network | 97 | 1993 | |
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|||
| 5,387,941 Data with video transmitter | 186 | 1992 | |
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|||
| 5,617,148 Filter by-pass for transmitting an additional signal with a video signal | 117 | 1995 | |
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|||
| 6,091,932 Bidirectional point to multipoint network using multicarrier modulation | 156 | 1998 | |
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|||
| 5,282,222 Method and apparatus for multiple access between transceivers in wireless communications using OFDM spread spectrum | 411 | 1992 | |
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|||
| 5,276,703 Wireless local area network communications system | 241 | 1992 | |
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|||
| 5,999,970 Access system and method for providing interactive access to an information source through a television distribution system | 111 | 1996 | |
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|||
| 5,145,525 Oil handling around a metering roll | 30 | 1990 | |
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|||
| 5,768,309 Unified trellis encoder | 56 | 1994 | |
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|||
| 6,021,423 Method for parallel-efficient configuring an FPGA for large FFTS and other vector rotation computations | 67 | 1997 | |
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|||
| 4,853,686 Method and apparatus for establishing a connection in shortwave radio networks | 58 | 1987 | |
|
|
|||
| 4,644,526 Full duplex frequency division multiplex communication system | 165 | 1984 | |
| 5,124,980 Synchronous multiport digital 2-way communications network using T1 PCM on a CATV cable | 104 | 1989 | |
| 5,027,426 Signal coupling device and system | 141 | 1989 | |
| 5,343,209 Navigation receiver with coupled signal-tracking channels | 186 | 1992 | |
| 5,207,466 Prong-equipped garden tool | 45 | 1992 | |
| 5,371,696 Computational structures for the fast Fourier transform analyzers | 47 | 1992 | |
| 2001/0001,616 Apparatus and method for SCDMA digital data transmission using orthogonal codes and a head end modem with no tracking loops | 54 | 2000 | |
Patent Citation Ranking
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | Nov 19, 2016 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Nov 19, 2020 |
| Fee | Large entity fee | small entity fee | micro entity fee |
|---|---|---|---|
| Surcharge - 7.5 year - Late payment within 6 months | $160.00 | $80.00 | $40.00 |
| Surcharge - 11.5 year - Late payment within 6 months | $160.00 | $80.00 | $40.00 |
| 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 |