EP0651531A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Communication technique employing variable information transmission rate function of quality
Assignee: AT&T Inc
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Filing: 1994-10-19
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Granted: —
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Expires: 2014-10-19
Abstract
Abstract A communication method wherein rate of information transfer with a given signal transmitted or received at a transceiver node (e.g. 101) is dynamically varied as a function of the relative quality of the transmission environment. The method employs a responsive buffering process (in 107) at each communication node that permits this rate to be varied somewhat independently of the rate at which information is transferred to or from the transceiver node. In a particular application, the invention permits information to be exchanged between a wireless signal (from 116) having a variable error correction bandwidth and a fixed bandwidth data stream (108,115,111).
Inventors
- 👤 John J. Daly
- 👤 Herman F. Haisch
- 👤 Peter Kapsales
- 👤 Bala Krishnamurthy
- 👤 Richard A. Miska
- 👤 Carl E. Walker
- 👤 Joseph K. Nordgaard
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-26 05:39
CPC Classifications
H; H04; H04L; H04L1/00; H04L1/0001; H04L1/0015; H04L1/0017; H04B; H04B7/00; H04B7/14; H04B7/15; H04B7/185; H04B7/1853; H04B7/18539; H04B7/18543; H04L1/0009; H04L1/0023; H04L1/0025
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
122 words
A method for transmitting information within a communication system comprising an endpoint node, an intermediate node and a distant node; said method comprising the steps of: transmitting information between said endpoint node and said intermediate node at a variable rate via an information channel, said variable rate being a function of the transmission quality afforded by said information channel; transmitting, from said intermediate node to said distant node, a signal indicating the present variable rate at which information is being transmitted between said endpoint node and said intermediate node; and transmitting information between said distant node and said intermediate node at a rate determined as a function of said present variable rate of transmission between said endpoint node and said intermediate node.
Claim 2
Dependent Claim
47 words
The method of claim 1 wherein said information transmitted between said distant node and said intermediate node is then transmitted from said intermediate node to said endpoint node at a rate equal to said present variable rate of transmission between said endpoint node and said intermediate node.
Claim 3
Independent Claim
124 words
A method for transmitting information within a communication system comprising an endpoint node, an intermediate node and a distant node; said method comprising the steps of: transmitting information between said endpoint node and said intermediate node at a variable rate via a wireless information channel, said variable rate being a function of the transmission quality afforded by said wireless information channel; transmitting, from said intermediate node to said distant node, a signal indicating the present variable rate at which information is being transmitted between said endpoint node and said intermediate node; and transmitting information between said distant node and said intermediate node at a rate determined as a function of said present variable rate of transmission between said endpoint node and said intermediate node.
Claim 4
Independent Claim
44 words
The method of claim 1or3 wherein said rate determined as a function of said present variable rate of transmission between said endpoint node and said intermediate node is equal to said present variable rate of transmission between said endpoint node and said intermediate node.
Claim 5
Dependent Claim
52 words
The method of claim 3 wherein said information transmitted between said distant node and said intermediate node is then transmitted from said intermediate node to said endpoint node via a wireless information channel at a rate equal to said present variable rate of transmission between said endpoint node and said intermediate node.
Claim 6
Independent Claim
179 words
A method for transmitting information within a communication system comprising: a wireless field transceiver adapted to transmit and receive information via a first channel having a fixed bandwidth; a base transceiver adapted to transmit information to, and receive information from said wireless field transceiver via said first channel, and a remote data base adapted to transmit information to and receive information from said base transceiver via a second channel; said method comprising the steps of: transmitting information between said wireless field transceiver and said base transceiver at a variable rate via said first channel, said variable rate being a function of the transmission quality afforded by said first channel; transmitting, from base transceiver to said remote data base, a signal indicating the present variable rate at which information is being transmitted between said wireless field transceiver and said base transceiver; and transmitting information between said remote data base and said base transceiver, via said second channel, at a rate determined as a function of said present variable rate of transmission between said wireless field transceiver and said base transceiver.
Claim 7
Dependent Claim
46 words
The method of claim 6 wherein said rate determined as a function of said present variable rate of transmission between said wireless field transceiver and said base transceiver is equal to said present variable rate of transmission between said wireless field transceiver and said base transceiver.
Claim 8
Dependent Claim
50 words
The method of claim 6 wherein said information transmitted between said remote data base and said base transceiver is then transmitted from said base transceiver to said wireless field transceiver at a rate equal to said present variable rate of transmission between said remote data base and said base transceiver.
Claim 9
Dependent Claim
16 words
The method of claim 6 wherein said second channel includes a fixed rate information transmission channel.
Claim 10
Independent Claim
273 words
A method for transmitting information within a communication system comprising: a plurality of wireless field transceivers, each adapted to transmit and receive information via a separate channel having a fixed bandwidth; a plurality of base transceivers, each adapted to transmit information to, and receive information from said plurality of wireless field transceivers via said separate channels, and a plurality of remote data bases adapted to transmit information to and receive information from said plurality of base transceivers via a second channel, and further adapted to transmit information to each of said plurality of wireless field transceivers; said method comprising the steps of: transmitting information between at least one of said plurality of wireless field transceivers and at least one of said plurality of base transceivers, each of said transmissions being performed at a variable rate via one of said separate channels, wherein the particular variable rate of transmission for each of said separate channels is a function of the transmission quality afforded by each separate channel; transmitting from at least one of said plurality of base transceivers to at least one of said plurality of remote data bases, via said second channel, a signal indicating the present variable rate at which information is being transmitted between each of said plurality of wireless field transceivers and said one of said plurality of base transceivers; and transmitting information between at least one of said plurality of remote data bases and at least one of said plurality of base transceivers, at a rate determined as a function of said present variable rates of transmission between said plurality of field transceivers and each of said base transceivers.
References Cited (Backward Citations)
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