US5946322A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hybrid access system utilizing credit/done polling protocols
Assignee: BG SERVICES Ltd
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Filing: 1996-08-27
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Granted: 1999-08-31
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Expires: 2016-08-27
Abstract
Abstract An asymmetric network communication system for use in a client-server environment having independent forward and return channels operating at different speeds and/or under different protocols on the same or different communication media to provide efficient utilization of shared resources. A network manager, such as a hybrid access system, effects transmission of packetized data on a forward (downstream) channel from the host server to multiple client devices coupled with a shared downstream media at 10 or more megabits per second while simultaneously providing selectable multiple lower speeds of operation on shared or dedicated return (upstream) channels from the client devices to the host server depending on bandwidth availability, bandwidth demand, service level authorization, etc. for the return channel. Forward and return channels may be located on the same or different communication medium including a CATV network, direct broadcast satellite network, television or radio RF broadcast network, wireless or mobile cellular facilities or the like. The return channel may reside on a PSTN either directly coupled with the host server or connected with the network manager for subsequent transmission to the host server. The network manager handles or controls the forward and return communication to establish interactive full-duplex real-time network sessions between the host and a selected client device. The network manager switches upstream channel assignment based on quality of signals transmitted to the host, effects changes in the upstream transmitted power based on sensed conditions, and automatically configures new client devices as they are added to the network. The system issues data transmission credits to client devices for enabling them to independently transmit data without supervision up to their allowed credit limit thereby reducing polling for channel allocation requests.
Inventors
- 👤 Eduardo J. Moura
- 👤 Jan Maksymilian Gronski
- 👤 Robert L. Packer
- 👤 Robert A. Luxenberg
- 👤 Frederick Enns
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:52
CPC Classifications
H; H04; H04H; H04H20/00; H04H20/65; H04H20/76; H04H20/77; H04H20/81; H04B; H04B7/00; H04B7/14; H04B7/15; H04B7/185; H04B7/18523; H04B7/18578; H04B7/18584; H04H60/00; H04H60/76; H04H60/81; H04H60/82; H04J; H04J3/00; H04J3/16; H04J3/1682; H04J3/1694; H04L; H04L12/00; H04L12/28; H04L12/2801; H04L12/2854; H04L12/2856; H04L12/2869; H04L12/2898; H04L61/00; H04L67/00; H04L67/01; H04L69/00; H04L69/14; H04L69/16; H04L69/161; H04L69/18; H04L9/00; H04L9/40; H04M; H04M11/00; H04M11/06; H04N; H04N21/00; H04N21/20; H04N21/23; H04N21/238; H04N21/2381; H04N21/239; H04N21/2393; H04N21/24; H04N21/2408; H04N21/25; H04N21/266; H04N21/40; H04N21/43; H04N21/437; H04N21/60; H04N21/63; H04N21/643; H04N21/64322; H04N7/00; H04N7/10; H04N7/16; H04N7/173; H04N7/17309; H04N7/17345; H04H20/38; H04H20/78; Y; Y02; Y02D; Y02D30/00; Y02D30/50; Y10; Y10S; Y10S370/00; Y10S370/908; Y10S370/911
Claims Analysis
Total Claims: 27
Claim 1
Independent Claim
256 words
In an asymmetric network communication system including a host server, a plurality of remote clients and a headend facility for distributing information signals to said remote clients, a packet delivery system comprising: a downstream channel shared by said plurality of remote clients for receiving high speed data packets from said host server over a shared medium, an upstream channel shared by said remote clients that enables at least one of said remote clients to transmit lower speed return data packets to said host server, a hybrid access system including a network manager for controlling transfers of data packets from said host server to said remote clients over said shared medium in accordance with a downstream channel protocol and for controlling transfers of lower return data packets from the at least one remote client to said host server over said shared upstream channel in accordance with an upstream channel protocol, said hybrid access system including a backbone interface that enables connection with said host server, a downstream router for enabling transmission of high speed data packets to said remote clients over said shared medium and an upstream router for receiving return data packets from said at least one of said remote clients, and said hybrid access system further including a credit manager for issuing credit control packets indicative of respective volumes of data said remote clients are respectively authorized to send, wherein said remote clients respectively return updated messages to said network manager indicative of respective remaining volumes of data to be sent to said host server.
Claim 2
Dependent Claim
256 words
In an asymmetric network communication system including a host server, a plurality of remote clients and a headend facility for distributing information signals to said remote clients, a packet delivery system comprising: a downstream channel shared by said plurality of remote clients for receiving high speed data packets from said host server over a shared medium, an upstream channel shared by said remote clients that enables at least one of said remote clients to transmit lower speed return data packets to said host server, a hybrid access system including a network manager for controlling transfers of data packets from said host server to said remote clients over said shared medium in accordance with a downstream channel protocol and for controlling transfers of lower return data packets from the at least one remote client to said host server over said shared upstream channel in accordance with an upstream channel protocol, said hybrid access system including a backbone interface that enables connection with said host server, a downstream router for enabling transmission of high speed data packets to said remote clients over said shared medium and an upstream router for receiving return data packets from said at least one of said remote clients, and said hybrid access system further including a credit manager for issuing credit control packets indicative of respective volumes of data said remote clients are respectively authorized to send, wherein said remote clients respectively return updated messages to said network manager indicative of respective remaining volumes of data to be sent to said host server.
Claim 3
Dependent Claim
199 words
In combination with a television broadcast facility including a shared medium downstream channel shared by a plurality of network devices that receive high speed data packets from a host server, an improvement comprising: respective interfaces associated with said network devices connected with said shared medium and tuned to receive high speed transfers of data packets for conveyance to said network devices, an upstream channel shared by said network devices to enable conveyance of lower speed return data packets to said host server, a network manager for controlling transfers of information data packets from said host server to said network devices over said shared medium in accordance with a downstream channel protocol and transfers of return data packets from said network devices to said host server over said upstream channel in accordance with an upstream channel protocol, wherein said network manager issues credit control packets indicative of a volume of data which at least one of said network devices is authorized to send wherein said at least one of said network devices effects updates said credit control packets to indicate an authorized volume of data less a volume of data sent by said at least one of said network devices.
Claim 4
Dependent Claim
199 words
In combination with a television broadcast facility including a shared medium downstream channel shared by a plurality of network devices that receive high speed data packets from a host server, an improvement comprising: respective interfaces associated with said network devices connected with said shared medium and tuned to receive high speed transfers of data packets for conveyance to said network devices, an upstream channel shared by said network devices to enable conveyance of lower speed return data packets to said host server, a network manager for controlling transfers of information data packets from said host server to said network devices over said shared medium in accordance with a downstream channel protocol and transfers of return data packets from said network devices to said host server over said upstream channel in accordance with an upstream channel protocol, wherein said network manager issues credit control packets indicative of a volume of data which at least one of said network devices is authorized to send wherein said at least one of said network devices effects updates said credit control packets to indicate an authorized volume of data less a volume of data sent by said at least one of said network devices.
Claim 5
Dependent Claim
124 words
In an asymmetric wide area network that includes a network manager, a host server and a plurality of remote clients, a method of communicating with remote clients including the steps of: providing an upstream channel that shared by said remote clients and that enables at least one of said remote clients to transmit return data packets to said host server, transmitting a credit signal to a remote client to authorize a volume of data said at least one of said remote clients is authorized to send, effecting updating of said credit signal so that the credit signal corresponds to said volume of data less data sent by said at least one of said remote clients, and returning said credit signal to said network manager.
Claim 6
Dependent Claim
124 words
In an asymmetric wide area network that includes a network manager, a host server and a plurality of remote clients, a method of communicating with remote clients including the steps of: providing an upstream channel that shared by said remote clients and that enables at least one of said remote clients to transmit return data packets to said host server, transmitting a credit signal to a remote client to authorize a volume of data said at least one of said remote clients is authorized to send, effecting updating of said credit signal so that the credit signal corresponds to said volume of data less data sent by said at least one of said remote clients, and returning said credit signal to said network manager.
Claim 7
Dependent Claim
132 words
A wireless packet delivery system for use in a communication network that establishes a communications link between a host server and at least one remote device, said system comprising: a downstream channel shared by said at least one remote device for receiving data packets from said host server over a shared medium, an upstream channel that enables said at least one remote device to transmit return data to said host server, a network manager for handling transfers of data packets between said host server and said at least one remote device over said shared medium in accordance with upstream and downstream channel protocols, and for issuing a credit signal for said at least one remote device corresponding to a volume of data said at least one remote device is authorized to send.
Claim 8
Dependent Claim
132 words
A wireless packet delivery system for use in a communication network that establishes a communications link between a host server and at least one remote device, said system comprising: a downstream channel shared by said at least one remote device for receiving data packets from said host server over a shared medium, an upstream channel that enables said at least one remote device to transmit return data to said host server, a network manager for handling transfers of data packets between said host server and said at least one remote device over said shared medium in accordance with upstream and downstream channel protocols, and for issuing a credit signal for said at least one remote device corresponding to a volume of data said at least one remote device is authorized to send.
Claim 9
Dependent Claim
139 words
In a two way network communication system, a method of administering transfers of information between a plurality of first communication nodes, and a second communication node, based on credit administration, comprising: issuing a credit for a one of the first nodes, to enable a transfer of a set amount of information from the one of the first nodes; receiving at the second node an amount of information corresponding in value up to the credit issued for the one of the first nodes; sending a message to the second node indicative of the amount of information remaining to be sent; polling multiple ones of the plurality of first nodes from the second node to determine which of the first nodes requests an information transfer; and bypassing polling of respective ones of the first nodes that have unused information transfer credits.
Claim 10
Dependent Claim
139 words
In a two way network communication system, a method of administering transfers of information between a plurality of first communication nodes, and a second communication node, based on credit administration, comprising: issuing a credit for a one of the first nodes, to enable a transfer of a set amount of information from the one of the first nodes; receiving at the second node an amount of information corresponding in value up to the credit issued for the one of the first nodes; sending a message to the second node indicative of the amount of information remaining to be sent; polling multiple ones of the plurality of first nodes from the second node to determine which of the first nodes requests an information transfer; and bypassing polling of respective ones of the first nodes that have unused information transfer credits.
Claim 11
Dependent Claim
169 words
In a network communication system including a server that transfers information with a plurality of remote devices via respective upstream and downstream channels, the improvement comprising: a network controller that issues respective credit control packets associated with the remote devices, the packets including credit signals corresponding to a volume of data the remote devices are respectively authorized to send, the credit signals being updated upon transfers of information to indicate respective authorized volumes of data less respective transferred volumes of data, wherein the network controller couples the physical layer of each of the upstream and downstream channels, wherein the downstream channel comprises a shared medium shared by the remote devices, and the upstream and downstream channels form an asymmetric network connection between the host and the remote devices, wherein the downstream channel is selected from one of a CATV network, a direct broadcast satellite network, and an over-the-air radio frequency transmission, and the upstream channel is selected from one of the CATV network and the over-the-air radio frequency transmission.
Claim 12
Dependent Claim
169 words
In a network communication system including a server that transfers information with a plurality of remote devices via respective upstream and downstream channels, the improvement comprising: a network controller that issues respective credit control packets associated with the remote devices, the packets including credit signals corresponding to a volume of data the remote devices are respectively authorized to send, the credit signals being updated upon transfers of information to indicate respective authorized volumes of data less respective transferred volumes of data, wherein the network controller couples the physical layer of each of the upstream and downstream channels, wherein the downstream channel comprises a shared medium shared by the remote devices, and the upstream and downstream channels form an asymmetric network connection between the host and the remote devices, wherein the downstream channel is selected from one of a CATV network, a direct broadcast satellite network, and an over-the-air radio frequency transmission, and the upstream channel is selected from one of the CATV network and the over-the-air radio frequency transmission.
Claim 13
Dependent Claim
172 words
In a system including a server, a plurality of remote clients and an information distribution facility for distributing data packets to the remote clients, a two-way network communication system comprising: a downstream channel shared by the plurality of remote clients to receive high speed data packets from the server; an upstream channel for enabling at least one of the remote clients to convey lower speed return data packets to the server; and a network manager for managing transfers of data packets from the server to the remote clients in accordance with a downstream channel protocol and transfers of return data packets from the remote clients to the server in accordance with an upstream channel protocol, and for issuing credit control packets indicative of respective volumes of data the remote clients are respectively authorized to send, the remote clients respectively returning updated messages to the network manager indicative of respective remaining volumes of data to be sent to the server, wherein the upstream channel and the downstream channel reside in different communication media.
Claim 14
Dependent Claim
172 words
In a system including a server, a plurality of remote clients and an information distribution facility for distributing data packets to the remote clients, a two-way network communication system comprising: a downstream channel shared by the plurality of remote clients to receive high speed data packets from the server; an upstream channel for enabling at least one of the remote clients to convey lower speed return data packets to the server; and a network manager for managing transfers of data packets from the server to the remote clients in accordance with a downstream channel protocol and transfers of return data packets from the remote clients to the server in accordance with an upstream channel protocol, and for issuing credit control packets indicative of respective volumes of data the remote clients are respectively authorized to send, the remote clients respectively returning updated messages to the network manager indicative of respective remaining volumes of data to be sent to the server, wherein the upstream channel and the downstream channel reside in different communication media.
Claim 15
Dependent Claim
213 words
In a system including a server, a hybrid fiber coaxial cable network, a plurality of remote clients physically connected in parallel to the hybrid fiber coaxial cable network, and an information distribution facility for distributing data packets to the remote clients, a two-way network communication system comprising: a downstream channel shared by the plurality of remote clients to receive high speed data packets from the server, the downstream channel lying in the hybrid fiber coaxial cable network such that the remote clients may receive simultaneously broadcast data packets, whereby to facilitate efficient sharing of resources at the distribution facility by the remote clients; an upstream channel for enabling at least one of the remote clients to convey lower speed return data packets to the server; and a network manager for managing transfers of data packets from the server to the remote clients in accordance with a downstream channel protocol and transfers of return data packets from the remote clients to the server in accordance with an upstream channel protocol, and for issuing credit control packets indicative of respective volumes of data the remote clients are respectively authorized to send, the remote clients respectively returning updated messages to the network manager indicative of respective remaining volumes of data to be sent to the server.
Claim 16
Dependent Claim
213 words
In a system including a server, a hybrid fiber coaxial cable network, a plurality of remote clients physically connected in parallel to the hybrid fiber coaxial cable network, and an information distribution facility for distributing data packets to the remote clients, a two-way network communication system comprising: a downstream channel shared by the plurality of remote clients to receive high speed data packets from the server, the downstream channel lying in the hybrid fiber coaxial cable network such that the remote clients may receive simultaneously broadcast data packets, whereby to facilitate efficient sharing of resources at the distribution facility by the remote clients; an upstream channel for enabling at least one of the remote clients to convey lower speed return data packets to the server; and a network manager for managing transfers of data packets from the server to the remote clients in accordance with a downstream channel protocol and transfers of return data packets from the remote clients to the server in accordance with an upstream channel protocol, and for issuing credit control packets indicative of respective volumes of data the remote clients are respectively authorized to send, the remote clients respectively returning updated messages to the network manager indicative of respective remaining volumes of data to be sent to the server.
Claim 17
Dependent Claim
26 words
The network communication system as recited in claim 8 wherein the upstream channel comprises a lower speed channel carried by the hybrid fiber coaxial cable network.
Claim 18
Dependent Claim
193 words
In a system including a server, a plurality of remote clients including a radio frequency receivers, and an information distribution facility for distributing data packets to the remote clients, the distribution facility including a cellular broadcast facility, a two-way network communication system comprising: a downstream channel shared by the plurality of remote clients to receive high speed data packets from the server, the downstream channel including radio frequency broadcasts from the cellular broadcast facility, to allow the radio receivers to receive data packets; an upstream channel for enabling at least one of the remote clients to convey lower speed return data packets to the server; and a network manager for managing transfers of data packets from the server to the remote clients in accordance with a downstream channel protocol and transfers of return data packets from the remote clients to the server in accordance with an upstream channel protocol, and for issuing credit control packets indicative of respective volumes of data the remote clients are respectively authorized to send, the remote clients respectively returning updated messages to the network manager indicative of respective remaining volumes of data to be sent to the server.
Claim 19
Dependent Claim
193 words
In a system including a server, a plurality of remote clients including a radio frequency receivers, and an information distribution facility for distributing data packets to the remote clients, the distribution facility including a cellular broadcast facility, a two-way network communication system comprising: a downstream channel shared by the plurality of remote clients to receive high speed data packets from the server, the downstream channel including radio frequency broadcasts from the cellular broadcast facility, to allow the radio receivers to receive data packets; an upstream channel for enabling at least one of the remote clients to convey lower speed return data packets to the server; and a network manager for managing transfers of data packets from the server to the remote clients in accordance with a downstream channel protocol and transfers of return data packets from the remote clients to the server in accordance with an upstream channel protocol, and for issuing credit control packets indicative of respective volumes of data the remote clients are respectively authorized to send, the remote clients respectively returning updated messages to the network manager indicative of respective remaining volumes of data to be sent to the server.
Claim 20
Dependent Claim
174 words
In a system including a server, a plurality of remote clients and an information distribution facility for distributing data packets to the remote clients, a two-way network communication system comprising: a downstream channel shared by the plurality of remote clients to receive high speed data packets from the server; an upstream channel for enabling at least one of the remote clients to convey lower speed return data packets to the server, the upstream channel including a lower speed cellular return channel routed through the distribution facility; and a network manager for managing transfers of data packets from the server to the remote clients in accordance with a downstream channel protocol and transfers of return data packets from the remote clients to the server in accordance with an upstream channel protocol, and for issuing credit control packets indicative of respective volumes of data the remote clients are respectively authorized to send, the remote clients respectively returning updated messages to the network manager indicative of respective remaining volumes of data to be sent to the server.
Claim 21
Dependent Claim
174 words
In a system including a server, a plurality of remote clients and an information distribution facility for distributing data packets to the remote clients, a two-way network communication system comprising: a downstream channel shared by the plurality of remote clients to receive high speed data packets from the server; an upstream channel for enabling at least one of the remote clients to convey lower speed return data packets to the server, the upstream channel including a lower speed cellular return channel routed through the distribution facility; and a network manager for managing transfers of data packets from the server to the remote clients in accordance with a downstream channel protocol and transfers of return data packets from the remote clients to the server in accordance with an upstream channel protocol, and for issuing credit control packets indicative of respective volumes of data the remote clients are respectively authorized to send, the remote clients respectively returning updated messages to the network manager indicative of respective remaining volumes of data to be sent to the server.
Claim 22
Dependent Claim
194 words
In a system including a server, a plurality of remote clients each including a receiver, and an information distribution facility for distributing data packets to the remote clients, the distribution facility including a direct broadcast satellite, a two-way network communication system comprising: a downstream channel shared by the plurality of remote clients to receive high speed data packets from the server, the downstream channel including electromagnetic transmissions from the direct broadcast satellite to allow the receiver in each remote client to receive information signals; an upstream channel for enabling at least one of the remote clients to convey lower speed return data packets to the server; and a network manager for managing transfers of data packets from the server to the remote clients in accordance with a downstream channel protocol and transfers of return data packets from the remote clients to the server in accordance with an upstream channel protocol, and for issuing credit control packets indicative of respective volumes of data the remote clients are respectively authorized to send, the remote clients respectively returning updated messages to the network manager indicative of respective remaining volumes of data to be sent to the server.
Claim 23
Dependent Claim
194 words
In a system including a server, a plurality of remote clients each including a receiver, and an information distribution facility for distributing data packets to the remote clients, the distribution facility including a direct broadcast satellite, a two-way network communication system comprising: a downstream channel shared by the plurality of remote clients to receive high speed data packets from the server, the downstream channel including electromagnetic transmissions from the direct broadcast satellite to allow the receiver in each remote client to receive information signals; an upstream channel for enabling at least one of the remote clients to convey lower speed return data packets to the server; and a network manager for managing transfers of data packets from the server to the remote clients in accordance with a downstream channel protocol and transfers of return data packets from the remote clients to the server in accordance with an upstream channel protocol, and for issuing credit control packets indicative of respective volumes of data the remote clients are respectively authorized to send, the remote clients respectively returning updated messages to the network manager indicative of respective remaining volumes of data to be sent to the server.
Claim 24
Dependent Claim
203 words
In a system including a server, a plurality of remote clients and an information distribution facility for distributing data packets to the remote clients, a two-way network communication system comprising: a downstream channel shared by the plurality of remote clients to receive high speed data packets from the server; an upstream channel for enabling at least one of the remote clients to convey lower speed return data packets to the server; and a network manager for managing transfers of data packets from the server to the remote clients in accordance with a downstream channel protocol and transfers of return data packets from the remote clients to the server in accordance with an upstream channel protocol, and for issuing credit control packets indicative of respective volumes of data the remote clients are respectively authorized to send, the remote clients respectively returning updated messages to the network manager indicative of respective remaining volumes of data to be sent to the server, wherein each of the upstream and downstream channels lies in a communication medium selected from one of a CATV distribution network, a cell site, an electromagnetic transmission, a hybrid fiber coaxial cable network, an over-the-air wireless network, and a direct broadcast satellite communication network.
Claim 25
Dependent Claim
203 words
In a system including a server, a plurality of remote clients and an information distribution facility for distributing data packets to the remote clients, a two-way network communication system comprising: a downstream channel shared by the plurality of remote clients to receive high speed data packets from the server; an upstream channel for enabling at least one of the remote clients to convey lower speed return data packets to the server; and a network manager for managing transfers of data packets from the server to the remote clients in accordance with a downstream channel protocol and transfers of return data packets from the remote clients to the server in accordance with an upstream channel protocol, and for issuing credit control packets indicative of respective volumes of data the remote clients are respectively authorized to send, the remote clients respectively returning updated messages to the network manager indicative of respective remaining volumes of data to be sent to the server, wherein each of the upstream and downstream channels lies in a communication medium selected from one of a CATV distribution network, a cell site, an electromagnetic transmission, a hybrid fiber coaxial cable network, an over-the-air wireless network, and a direct broadcast satellite communication network.
Claim 26
Dependent Claim
213 words
In a system including a server, a plurality of remote clients and an information distribution facility for distributing data packets to the remote clients, a two-way network communication system comprising: a downstream channel shared by the plurality of remote clients to receive high speed data packets from the server; a plurality of upstream channels for enabling at least one of the remote clients to convey lower speed return data packets to the server; and a network manager for managing transfers of data packets from the server to the remote clients in accordance with a downstream channel protocol and transfers of return data packets from the remote clients to the server in accordance with an upstream channel protocol, the upstream channel protocol enabling operation of the upstream channels at multiple speeds, wherein the network manager selectably assigns an upstream channel having a speed according to an information transfer requirement of one of the remote clients to provide more effective utilization of channel bandwidth according to demand by respective remote clients and for issuing credit control packets indicative of respective volumes of data the remote clients are respectively authorized to send, the remote clients respectively returning updated messages to the network manager indicative of respective remaining volumes of data to be sent to the server.
Claim 27
Dependent Claim
213 words
In a system including a server, a plurality of remote clients and an information distribution facility for distributing data packets to the remote clients, a two-way network communication system comprising: a downstream channel shared by the plurality of remote clients to receive high speed data packets from the server; a plurality of upstream channels for enabling at least one of the remote clients to convey lower speed return data packets to the server; and a network manager for managing transfers of data packets from the server to the remote clients in accordance with a downstream channel protocol and transfers of return data packets from the remote clients to the server in accordance with an upstream channel protocol, the upstream channel protocol enabling operation of the upstream channels at multiple speeds, wherein the network manager selectably assigns an upstream channel having a speed according to an information transfer requirement of one of the remote clients to provide more effective utilization of channel bandwidth according to demand by respective remote clients and for issuing credit control packets indicative of respective volumes of data the remote clients are respectively authorized to send, the remote clients respectively returning updated messages to the network manager indicative of respective remaining volumes of data to be sent to the server.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2002-08-30 | 2003-03-01 | 2003-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-08-30 | 2007-03-01 | 2007-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-08-30 | 2011-03-01 | 2011-08-31 | $7700.00 | Window Closed / Lapsed |